ФИЛЬТР ДЛЯ ОЧИСТКИ ОТРАБОТАВШИХ ГАЗОВ И СПОСОБ ОЧИСТКИ ОТРАБОТАВШИХ ГАЗОВ

Изобретение относится к двигателестроению и может быть использовано в устройствах для очистки отработавших газов (ОГ) двигателя. Фильтр для очистки ОГ, образующихся при работе двс, выполнен из по меньшей мере одного полосовидного фильтрующего элемента, имеющего по меньшей мере один фильтрующий участок из по меньшей мере частично проточного для текучей среды материала и, необязательно, фольги, при этом фильтрующий элемент имеет по меньшей мере один контактный участок с каталитически активным покрытием для химического превращения газообразных компонентов отработавших газов и фильтрующий участок для отфильтровывания из отработавших газов присутствующих в них твердых частиц, причем контактный участок расположен перед, если смотреть в главном направлении потока, фильтрующим участком. Контактный участок выполнен с входной торцевой стороны фильтра, занимает в продольном направлении менее 20%, предпочтительно менее 10%, от осевой длины фильтра. Приведен способ очистки ОГ. Изобретение позволяет ...

ХОЛОДИЛЬНИК ВЫХЛОПНЫХ ГАЗОВ ДВИГАТЕЛЯ

Изобретение относится к машиностроению и может быть использовано в тепловых двигателях. Холодильник выхлопных газов содержит размещенную вокруг выхлопной среды емкость с гелием, которая находится внутри установки по удержанию атомов с гелием, причем на последний воздействуют с помощью лазерного охлаждения. Выхлопная труба может быть расположена спирально внутри холодильника. Выхлопная труба может быть выполнена плоской. Изобретение позволяет понизить температуру холодильника теплового двигателя, тем самым повысить коэффициент полезного действия двигателя. 2 з.п. ф-лы.

КАТАЛИТИЧЕСКИЙ НЕЙТРАЛИЗАТОР ДЛЯ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Каталитический нейтрализатор содержит корпус с двойными стенками и теплоизоляцией между ними, патрубки входа и выхода, высокотемпературный и низкотемпературный пористые фильтры из металлокерамики, содержащие цилиндрические кассеты, при этом внутри корпуса дополнительно установлены два осевых вентилятора с направляющими лопатками потока отработавших газов, причем осевые вентиляторы размещены на валу привода, вращающемся на двух шариковых подшипниках, установленных в ступицах направляющих лопаток, вращение к валу привода осевых вентиляторов передается от электродвигателя постоянного тока через редуктор, установленный на переднем конце вала привода осевых вентиляторов, редуктор имеет обтекатель отработавших газов, за направляющими лопатками потока отработавших газов переднего осевого вентилятора размещен сажеотделитель с сажесборником, в котором установлена электрическая нагревательная спираль, управляемая включателем, а сажесборник соединен трубопроводом с патрубком выхода отработавших газов ...

ФИЛЬТРУЮЩИЙ ЭЛЕМЕНТ САЖЕВОГО ФИЛЬТРА ДЛЯ ОЧИСТКИ ВЫХЛОПНЫХ ГАЗОВ ДИЗЕЛЬНЫХ ДВИГАТЕЛЕЙ

... 1. Фильтрующий элемент сажевого фильтра для очистки выхлопных газов дизельных двигателей, содержащий пакет гофрированных лент из жаропрочной стали с нанесенным на них каталитически активным покрытием, включающим в качестве драгоценного металла платину, наложенных друг на друга с образованием ячеистой структуры, отличающийся тем, что гофрированные ленты выполнены перфорированными, а гофры смежных гофрированных лент размещены взаимно под острым углом друг к другу в направлении выхода фильтрующего элемента, плотность отверстий перфорации составляет 1200-2600 отверстий на квадратный сантиметр поверхности перфорированной ленты, удельное содержание общего количества драгоценных металлов каталитически активного покрытия в объеме ячеистой структуры составляет 0,25-0,45 г/дм3. ! 2. Фильтрующий элемент сажевого фильтра для очистки выхлопных газов дизельных двигателей по п.1, отличающийся тем, что количество гофр в пакете гофрированных лент составляет 20-30 гофр на квадратный сантиметр поперечного ...

УСТРОЙСТВО ДЛЯ ОЧИСТКИ И РЕЦИРКУЛЯЦИИ ВЫХЛОПНЫХ ГАЗОВ

Устройство для очистки и рециркуляции выхлопных газов, содержащее выхлопной трубопровод для сбора и выброса газа, электронную схему, соединенную с реактором, включающим установленные и закрепленные в корпусе разрядники, искровые промежутки которых находятся внутри корпуса и расположены по спирали относительно центральной оси корпуса реактора и по винтовой линии относительно поверхности корпуса реактора, при этом угол наклона разрядников к центральной оси реактора равен 22-90°, напротив искровых промежутков находится одно из отверстий направляющего аппарата, выполненного в виде круглой пластины с отверстиями, и установленного внутри корпуса реактора перед разрядниками, отличающееся тем, что дополнительно включает коробку, заслонку, трубопровод, центробежный фильтр, воздухозаборник, заслонку регулирующую, фильтр воздухозаборника, коллектор двигателя автомобиля, причем пластины направляющего аппарата установлены с возможностью обеспечения вихревого вращения струи выхлопных газов, подающихся ...

УСТРОЙСТВО ДЛЯ ОЧИСТКИ ОТРАБОТАВШИХ ГАЗОВ ДВИГАТЕЛЕЙ ВНУТРЕННЕГО СГОРАНИЯ

Полезная модель относится к области машиностроения, а именно к системам очистки отработавших газов двигателей внутреннего сгорания, и может быть использована в выпускной системе дизельных двигателей, для снижения выбросов сажи и вредных веществ. Устройство состоит из датчика положения коленчатого вала 1, двух времязадающих цепей 2, 17 интегрального блок-таймера 3, выхлопного коллектора 4, впускного патрубка 5 аэрозольной камеры, ионизирующего контура 21, трубок 6 для подачи раствора (водяного аэрозоля), форсунок 7, бака с нейтрализующим раствором 8, жидкостного насоса 9, центробежного каплеуловителя 10, жидкостного нейтрализатора, выпускного патрубка 12, блока измерителя температуры 13, формирователя тока заряда 14, электронного блока управления 15, операционного усилителя 16, ключа 18, источника тока 19, блока питания ионизатора (блока зарядки) 20 и положительного электрода 22 бака 6 нейтрализующего раствора. Использование предлагаемой полезной модели позволит повысить эффективность работы ...

НЕЙТРАЛИЗАТОР ОТРАБОТАВШИХ ГАЗОВ

Нейтрализатор отработавших газов, содержащий корпус, по концам которого имеются крышки с впускным и выпускным патрубками, во впускном патрубке имеется завихритель и дожигатель, отличающийся тем, что внутри нейтрализатора установлен коаксиально дожигатель, который выполнен из не менее двух полых перфорированных цилиндров из цветной металлической фольги с толщиной стенки 0,001-0,2 мм, причем перфорированные цилиндры с обоих концов соединены между собой и закреплены к корпусу нейтрализатора спицами.

СИСТЕМА ШУМОГЛУШЕНИЯ ПРЕДОХРАНИТЕЛЬНЫХ КЛАПАНОВ ЭНЕРГЕТИЧЕСКОЙ УСТАНОВКИ

... 1. Система шумоглушения предохранительных клапанов энергетической установки, включающая по меньшей мере два глушителя шума, выход которых сообщен с атмосферой, и по меньшей мере два предохранительных клапана с патрубками отвода пара, соединенными трубопроводами с глушителями шума, отличающаяся тем, что система дополнительно снабжена коллектором, соединенным трубопроводами с патрубками для отвода пара из предохранительных клапанов, а вход каждого из глушителей шума соединен с упомянутым коллектором пара.2. Система по п. 1, отличающаяся тем, что трубопроводы отвода пара от предохранительных клапанов соединены между собой в зоне между патрубками отвода пара из предохранительных клапанов и коллектором дополнительным трубопроводом.3. Система по пп.1 и 2, отличающаяся тем, что на входе в коллектор каждого трубопровода отвода пара из предохранительных клапанов установлена перфорированная перегородка.

СИСТЕМА РЕЦИРКУЛЯЦИИ ОТРАБОТАВШИХ ГАЗОВ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

... 1. Система рециркуляции отработавших газов двигателя внутреннего сгорания, содержащая перепускной трубопровод с регулируемым запорным элементом, причем вход перепускного трубопровода сообщен с выпускным трубопроводом двигателя внутреннего сгорания, а выход перепускного трубопровода сообщен с впускным трубопроводом двигателя внутреннего сгорании, отличающаяся тем, что перепускной трубопровод снабжен расположенными по потоку движения выхлопных газов соответственно средством для охлаждения выхлопных газов и средством для отделения воды.2. Система по п.1, отличающаяся тем, что средство для охлаждения выхлопных газов выполнено в виде проточного жидкостного теплообменника.3. Система по п.1, отличающаяся тем, что средство для охлаждения выхлопных газов выполнено в виде сильфонного участка трубопровода.4. Система по п.1, отличающаяся тем, что средство для отделения воды выполнено в виде фильтра - влагоотделителя.5. Система по п.1, отличающаяся тем, что средство для отделения воды выполнено в виде ...

УСТРОЙСТВО ДЛЯ ОЧИСТКИ ДЫМОВЫХ ФИЛЬТРОВ ОТ САЖИ (ВАРИАНТЫ)

Использование: используется при очистке от сажи тонких фильтров большой площади, применяемых в заводских трубах, трубах ТЭЦ и ТЭС. Сущность изобретения: устройство содержит источник СВЧ- энергии, замедляющую структуру, линию передачи, согласованные устройства и согласованную нагрузку. Вход замедляющей структуры через согласованное устройство и линию передачи соединен с выходом источника СВЧ-энергии. Выход замедляющей структуры соединен с согласованной нагрузкой. Во втором варианте исполнения изобретения устройство для очистки фильтров содержит источник СВЧ-энергии, замедляющую структуру цилиндрической формы, согласованный переход и линию передачи. Источник энергии возбуждает замедляющую структуру через линию передачи, согласованный переход и вибратор. 2 с. и 2 з.п. ф-лы, 6 ил.

НЕЙТРАЛИЗАТОР ОТРАБОТАВШИХ ГАЗОВ ЭНЕРГЕТИЧЕСКИХ УСТАНОВОК

Изобретение относится к машиностроению, а именно к системам снижения токсичности отработавших газов энергетических установок. Нейтрализатор отработавших газов энергетических установок содержит разъемный цилиндрический корпус, имеющий входной и выходной патрубки, канал подачи газа-восстановителя, установленный по центральной оси на входе смесительной камеры, при этом выходное сечение суживающегося конусообразного сопла, жестко соединенного с входным патрубком, находится в одной вертикальной плоскости соосно с входным сечением цилиндрической смесительной камеры, установленной соосно внутри корпуса, с образованием кольцевого канала. Изобретение позволяет повысить эффективность очистки отработавших газов. 1 ил.

ОЧИЩАЮЩИЙ ОТ ДИСПЕРСНЫХ ЧАСТИЦ МАТЕРИАЛ, ФИЛЬТР-КАТАЛИЗАТОР ДЛЯ ОЧИСТКИ ОТ ДИСПЕРСНЫХ ЧАСТИЦ С ИСПОЛЬЗОВАНИЕМ ОЧИЩАЮЩЕГО ОТ ДИСПЕРСНЫХ ЧАСТИЦ МАТЕРИАЛА И СПОСОБ РЕГЕНЕРИРОВАНИЯ ФИЛЬТРА-КАТАЛИЗАТОРА ДЛЯ ОЧИСТКИ ОТ ДИСПЕРСНЫХ ЧАСТИЦ

Изобретение относится к очищающему от дисперсных частиц материалу и его использованию. Описан очищающий от дисперсных частиц материал, используемый для фильтра-катализатора для очистки от дисперсных частиц, причем фильтр-катализатор расположен на пути потока выхлопных газов двигателя внутреннего сгорания, улавливает дисперсные частицы в выхлопных газах, образующихся в двигателе внутреннего сгорания, и сжигает осаждаемые дисперсные частицы с тем, чтобы регенерироваться, причем очищающий от дисперсных частиц материал включает в себя: оксид, содержащий: церий (Се), обладающий способностью аккумулирования-высвобождения кислорода; и по меньшей мере один металл (Me), выбранный из группы, состоящей из циркония (Zr), иттрия (Y), лантана (La), празеодима (Рr), стронция (Sr), ниобия (Nb) и неодима (Nd), при этом отношение содержаний (Се:Ме) церия к металлу составляет от 6:4 до 9:1 в единицах атомного отношения, и степень кристалличности (CR), представленная следующей формулой (1), составляет в пределах ...

УСТРОЙСТВО ДЛЯ УМЕНЬШЕНИЯ КОЛИЧЕСТВА ВЫБРАСЫВАЕМЫХ ЧАСТИЦ САЖИ ДЛЯ ТЕПЛОВЫХ ДВИГАТЕЛЕЙ

Изобретение относится к устройствам для уменьшения количества выбрасываемых частиц сажи из системы отработавших газов теплового двигателя. За счет добавки в топливо каталитической присадки точка воспламенения частиц сажи при их дожигании снижается примерно до 300 - 350°С, так что нормальная работа емкости значительно снижена, вследствие чего процесс регенерации фильтра в емкости начинается сравнительно рано. В соответствии с изобретением фильтрующий материал состоит из множества свернутых в кольцо плетеных рукавов из тончайших керамических нитей, вдоль которых пропущена термостойкая проволока. Проволока проходит через каждую отдельную петлю плетеной структуры параллельно керамической нити. Конструкция согласно изобретению обеспечивает удовлетворяющий требованиям срок службы сажевого фильтра, который выдерживает вибрационные и механические нагрузки. 15 з.п.ф-лы, 7 ил.

СПОСОБ РЕГЕНЕРАЦИИ САЖЕВОГО ФИЛЬТРА

Использование: изобретение относится к технике очистки сажевых фильтров от сажи и может найти применение при регенерации сажевых фильтров, устанавливаемых на автомобилях. Сущность изобретения: задержанную включенными параллельно в поток обработавших газов фильтрующими элементами сажу нагревают до температуры ее воспламенения не одновременно во всех фильтрующих элементах с помощью СВЧ-энергии, получаемой от нескольких генераторов, после чего подают к фильтрующим элементам смесь газов, в состав которых входит кислород, и тем самым выжигают сажу из фильтрующих элементов. 21 ил.

ГЛУШИТЕЛЬ

Изобретение относится к области машиностроения и предназначено для использования в двигателях внутреннего сгорания. Сущность изобретения: глушитель содержит корпус с торцевыми стенками и впускным, выпускным патрубками. Во впускной камере имеются завихрители различной длины, направленные встречно с впускным патрубком, которые представляют собой фазоинверторы, центральной камерой, в которой расположены зигзагообразные перегородки. Перегородки образуют противоположно направленные, чередующиеся каналы по диаметру, представляющие собой поглотители (резонаторы), поглощающие энергию основных частот звукового спектра, и выпускную камеру. В выпускную камеру вставлен спиральный фланец, в котором установлен нагреватель - дожигатель вредных веществ. Техническим результатом изобретения является увеличение эффективности работы во всем диапазоне акустических шумов и снижение содержания вредных веществ методом дожига. 1 ил.

УСТРОЙСТВО ДЛЯ ОЧИСТКИ ОТРАБОТАВШИХ ГАЗОВ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ

Использование: область очистки газовых потоков от частиц сажи, в частности при очистке выхлопных газов дизелей. Сущность изобретения: устройство для очистки отработавших газов содержит промежуточную и ограничительную решетки, первую, вторую и третью конусные втулки, последовательно расположенные в корпусе и обращенные основаниями в сторону выпускного патрубка, и газоподводящую вставку с винтовыми каналами, установленную во впускном патрубке. Промежуточная решетка размещена между впускной и выпускной газораспределительными решетками с образованием промежуточной полости, частично заполненной частицами, образующими кипящий слой. Впускная, промежуточная и выпускная решетки установлены соответственно в первой, второй и третьей втулках и выполнены с проходным сечением газовых каналов, увеличивающимся в направлении от впускной решетки к выпускной. 1 з. п. ф-лы, 1 ил.

ФИЛЬТР-ГЛУШИТЕЛЬ

... 1. Фильтр-глушитель, содержащий корпус с впускными и выпускными отверстиями и съемный фильтр, отличающийся тем, что корпус разделен на две части, в каждой из которых установлены выхлопные трубы с множеством отверстий и сепараторы, представляющие собой пластинчатые перфорированные перегородки с разделительными сетками, причем отверстия одной перегородки расположены так относительно отверстий следующей за ней перегородки, что их центры не совпадают. 2. Фильтр по п.1, отличающийся тем, что корпус имеет несколько впускных и выпускных отверстий.

СПОСОБ ОЧИСТКИ ВЫХЛОПНЫХ АВТОМОБИЛЬНЫХ ГАЗОВ ОТ ЧАСТИЦ

Способ очистки выхлопных автомобильных газов от частиц, содержащий выхлопную автомобильную трубу, частицы в газовом потоке, предусматривающий следующие операции: а) размещение в газовой ловушке воздуховода как минимум одного четвертьволнового резонатора, б) встраивание газовой ловушки на торец автомобильной выхлопной трубы, в) распространение нормальных волн низких номеров звуковой волны с газовым потоком и частицами из автомобильной выхлопной трубы в полость воздуховода газовой ловушки, г) трансформация нормальных волн низких номеров в нормальные волны высоких номеров в воздуховоде четвертьволновым резонатором, д) формирование стоячей звуковой волны в воздуховоде из нормальных волн высоких номеров, е) осуществление коагуляции частиц из газового потока в стоячих волнах, сформированных в воздуховоде, ж) осуществление движения коагулированных частиц из стоячей звуковой волны во внутреннюю кольцевую полость четвертьволнового резонатора, з) осуществление выхода через окна газовой ловушки очищенного ...

БЛИЗКО РАЗМЕЩЕННАЯ СИСТЕМА SCR

... 1. Система для обработки выхлопных газов, содержащих NO, из двигателя, упомянутая система, содержащая:проточный монолит, имеющий первый каталитический состав для селективного каталитического восстановления NOи имеющий первый объем;близко размещенный фильтр твердых частиц, имеющий второй каталитический состав для снижения количества твердых частиц и селективного каталитического восстановления NO, и имеющий второй объем; иотношение объемов первого объема ко второму объему составляет менее чем приблизительно 1:2,в которой упомянутый проточный монолит находится в жидкостном соединении с упомянутым фильтром твердых частиц и встроен выше по потоку от него.2. Система по п. 1, в которой соотношение объемов составляет от приблизительно 1:10 до приблизительно 1:2.3. Система по п. 1, в которой соотношение объемов составляет от приблизительно 1:6 до приблизительно 1:4.4. Система по п. 1, в которой упомянутый проточный монолит является экструдированным каталитическим кирпичом.5. Система по п. 4, в которой ...

ТЕРМИЧЕСКИЙ НЕЙТРАЛИЗАТОР ОТРАБОТАВШИХ ГАЗОВ ДИЗЕЛЯ

Термический нейтрализатор отработавших газов дизеля, содержащий цилиндрический теплоизолированный корпус с тангенциально установленным входным патрубком и выходной патрубок, отличающийся тем, что он снабжен циклоном из жаростойкой стали, размещенным внутри корпуса с двойными стенками на выходном патрубке и закрепленным с теплоизолирующими зазорами по отношению к внутренним стенкам корпуса, входной и выходной патрубки сообщены с циклоном, а на опоре, прикрепленной к нижней внутренней части корпуса, расположена электрическая спираль, связанная с блоком .управления и датчиком температуры ОГ дизеля, над электрической спиралью установлен экран из жаростойкой стали, защищающий ее от сажевых частиц, отсепарированных циклоном, при этом нижняя часть цилиндрического корпуса выполнена съемной и загерметизирована с корпусом посредством прокладки из негорючего материала, а экран для защиты электрической спирали от сажевых частиц имеет вид пластины с прорезями и с диаметром, большим внутреннего диаметра ...

Комбинированный сажевый фильтр

Комбинированный фильтр, содержащий корпус с входным и выходным патрубками и сажевым фильтром, отличающийся тем, что сажевый фильтр выполнен в виде полого цилиндра, во внутренней части которого расположен электронагревательный элемент, соединенный с температурным датчиком, установленным на корпусе и связанным с источником питания.

РЕГЕНЕРИРУЕМЫЙ САЖЕВЫЙ ФИЛЬТР ВЫХЛОПНЫХ ГАЗОВ

Изобретение относится к автомобильной, авиационной, судоходной промышленностям и другим, в которых возможно использование двигателей внутреннего сгорания. Цель изобретения - сокращение времени регенерации фильтра двигателя, улучшение качества очистки и повышение экологичности. Регенерируемый сажевый фильтр выхлопных газов для дизельных двигетелей выполнен с интенсификатором процесса сгорания сажевых частиц за счет возбуждения в поступающем в фильтр потоке воздуха ультразвуковых колебаний. Время очистки фильтров сокращается в два раза, повышается экологичность двигателя. 1 ил.

УСТРОЙСТВО ПО ОЧИСТКЕ ВЫХЛОПНЫХ ГАЗОВ ДИЗЕЛЬ-МОТОРА БУРОВОЙ УСТАНОВКИ А-50

Буровая установка типа А-50, имеющая привод от маршевого двигателя ЯМЗ-236, в заводском исполнении не имеет очистки выхлопных газов от продуктов неполного сгорания (сажа, оксид углерода, бензопирен и др.). Является серьезным загрязнителем воздушного бассейна и почвы не только в период производства буровых работ, но и при перегонах в городских условиях и на трассе. Предлагаемое устройство по очистке выхлопных газов отличается от известных тем, что перед адсорбером, где происходит химическая очистка выхлопных газов от оксида углерода, бензопирена и др., установлен воздушный эжектор, повышающий динамический напор потока газов, улучшает очистку камеры сгорания, увеличивает ресурс работы дизель-мотора. Питание эжектора воздухом происходит от компрессора М-155-2В5 или ГСВ-0,6/12, входящего в комплект буровой установки (маршевого дизель-мотора ЯМЗ-236). Таким образом, решаются две задачи: осуществляется очистка воздушного бассейна от продуктов неполного сгорания; улучшается очистка камер сгорания ...

НЕЙТРАЛИЗАТОР

Нейтрализатор, содержащий металлический цилиндр, катализатор на поверхности керамического носителя, катализатор на поверхности металлического носителя и сетки, отличающейся тем, что, с целью повышения эффективност нейтрализации вредных компонентов отработавших газов с твердыми включениями, катализаторы, например платина Pt, заключенные в диэлектрический носитель-турбулязатор, взаимодействуют электрическим разрядом с катализатором, например палладий Pd, легированным в металлический носитель с поверхностью в непосредственной близости размещенной от поверхности диэлектрического носителя-турбулязтора, причем расположенные последовательно газовому потоку в металлическом цилиндре взаимодействующие катализаторы, заключенные в носители, могут быть другими, например платина Pt-Rh родий, платина Pt-Ru рутений, пластина Pt-V ванадий, платина Pt-Cu медь и другие.

КАТАЛИЗАТОР СГОРАНИЯ ТВЕРДЫХ ЧАСТИЦ (РСС ИЛИ РССz) И КАТАЛИЗАТОР СГОРАНИЯ ТВЕРДЫХ ЧАСТИЦ С ПОКРЫТИЕМ (СРСС ИЛИ СРССz)

ФИЛЬТР ОТРАБОТАВШИХ ГАЗОВ ДИЗЕЛЯ

... 1. Фильтр отработавших газов дизеля, включающий корпус с цилиндрическим входным патрубком и выходным фланцем, закрепленный в корпусе керамический фильтрующий элемент - сажеуловитель с прямолинейными ориентированными по оси элемента газовыми каналами, закрытыми в шахматном порядке по торцам элемента заглушками, отличающийся тем, что перед сажеуловителем размещена направляющая решетка в виде опорного листа с газоподводящими конусными каналами, вершины которых ориентированы в сторону открытых с приемного торца элемента прямолинейных каналов, в конусных каналах установлены завихрители газов из собранных в пакет наклонных лепестков с выходящими на обращенную к сажеуловителю сторону опорного листа крестовинами, при этом по крайней мере одна крестовина снабжена двумя фиксирующими усами, контактирующими с противоположными стенками газовых каналов керамического фильтрующего элемента. 2. Фильтр по п. 1, отличающийся тем, что фиксирующие усы выполнены на опорном листе направляющей решетки.

УСТРОЙСТВО ДЛЯ ОЧИСТКИ ДЫМОВЫХ ГАЗОВ ОТ САЖИ

Использование: техника очистки от сажи дымовых фильтров, установленных в выхлопных трубах автомобильных двигателей, с помощью микроволновой энергии. Сущность изобретения: устройство содержит источник микроволновой энергии, экран, двумерную замедляющую систему, выполненную в виде металлической трубы с поперечными гофрами на ее внутренней поверхности, согласованную нагрузку и согласованные переходы для запитки замедляющей системы микроволновой энергией и отвода лишней энергии в согласованную нагрузку. Фильтр выполняется из пористого, температуроустойчивого диэлектрика с малыми электрическими потерями и устанавливается соосно между экраном и замедляющей системой.

ГЛУШИТЕЛЬ

Глушитель предназначен для глушения шума выхлопа отработанных газов двигателей внутреннего сгорания и применяется в транспортных средствах и стационарных силовых установках, оснащенных двигателями внутреннего сгорания, в том числе, ГТУ. Отличие глушителя в использовании пористого материала в качестве материала шумоглушащих элементов. Это позволяет улучшить эксплуатационные свойства глушителя и повысить экологическую чистоту двигателей внутреннего сгорания.

ФИЛЬТР ДЛЯ ОЧИСТКИ ОТРАБОТАВШИХ ГАЗОВ И СПОСОБ ОЧИСТКИ ОТРАБОТАВШИХ ГАЗОВ

... 1. Фильтр (11) для очистки отработавших газов, образующихся при работе двигателя внутреннего сгорания, выполненный из по меньшей мере одного полосовидного фильтрующего элемента (1), имеющего по меньшей мере один фильтрующий участок (2) из по меньшей мере частично проточного для текучей среды материала, и необязательно фольги (4), отличающийся тем, что фильтрующий элемент (1) имеет по меньшей мере один контактный участок (3) с каталитически активным покрытием для химического превращения газообразных компонентов отработавших газов и фильтрующий участок (2) для отфильтровывания из отработавших газов присутствующих в них твердых частиц. 2. Фильтр (11) по п.1, отличающийся тем, что контактный участок (3) по меньшей мере частично выполнен из фольги (4). 3. Фильтр (11) по п.1 или 2, отличающийся тем, что фольга (4) выполнена микропрофилированной. 4. Фильтр (11) по п.1 или 2, отличающийся тем, что контактный участок (3) по меньшей мере частично выполнен из проточного для текучей среды материала ...

Реактор для очистки отработавших газов двигателя внутреннего сгорания транспортного средства

Использование: системы снижения токсичности отработавших газов двигателей внутреннего сгорания. Сущность изобретения: реактор содержит корпус с входным и выходным патрубками, в котором размещены пористые и медьсодержащие элементы и нагреватель, имеющий по меньшей мере два нагревательных элемента, подключенные через включатель к источнику электрического тока транспортного средства. Реактор снабжен источником высокого напряжения , пористые элементы выполнены в виде по меньшей мере двух пластин из пе- нометалла с рабочей поверхностью, покрытой слоем окислов катализатора, размещенных между упомянутыми патрубками последовательно друг за другом, медьсодержащий элемент выполнен в виде пенометаллической пластины, размещенной за упомянутыми пластинами в направлении потока отработавших газов, рабочие поверхности всех пластин, размещенных с зазором относительно друг друга и подключенных поочередно к положительному и отрицательному полюсам источника высокого .напряжения расположены перпендикулярно ...

Filter für Motorabgase

Poröser Keramikkörper und Verfahren zu seiner Herstellung

Verwendung eines Katalysators zur Verringerung der Partikelmenge und/oder -größe im Dieselabgas

Partikelfilter mit selbstselektiver Regeneration

Teilchenansammlungszustandssensor und Brennkraftmaschine mit einem derartigen Sensor

Luftgekühlter Abgaswärmeübertrager, insbesondere Abgaskühler für Kraftfahrzeuge

PROCESS FOR LOWERING THE IGNITION TEMPERATURE OF DIESEL-OIL SOOT

VERFAHREN ZUM BETRIEB EINES ELEKTRISCH BEHEIZTEN KATALYSATORS

STROMVERSORGUNG ZUR BEHANDLUNG VON GASFÖRMIGEN MEDIEN

Brennkammer, insbesondere für die Partikelfilterregenerierung in einer Kraftfahrzeug-Abgasanlage

NUNGSMOTOREN

Vorrichtung zur Reinigung der Plattenschutzkapselung von im Untertagebetrieb des Bergbaues verwendeten Diesellokomotiven

Verfahren und Vorrichtung zur Reinigung von Abgas

VERWENDUNG EINES WABENFILTERS ZUR ABGASREINIGUNG

Verfahren zum Abdichten von offenen Enden von Wabenkörpern und Verfahren zur Herstellung abgedichteten Wabenkörper

Abgasemissionsreinigungssteuervorrichtung für eine Brennkraftmaschine

Abgasreinigungssteuervorrichtung zum Steuern einer Betttemperatur eines in einem Abgassystem einer Brennkraftmaschine angeordneten Abgasreinigungskatalysators auf eine Sollbetttemperatur, indem Kraftstoff der Brennkraftmaschine zugeführt wird, wobei die Abgasreinigungssteuervorrichtung aufweist: eine Steuereinheit, welche beim Steuern der Betttemperatur des Abgasreinigungskatalysators eine Kraftstoffzufuhrmenge lernt, welche eine Korrektur einer Differenz zwischen der Katalysatorbetttemperatur und der Sollbetttemperatur im momentanen Zustand erlaubt und einen Lernwert, der durch das Lernen der Kraftstoffzuführmenge ermittelt wird, widerspiegelt; eine Übergangszustandserfassungseinheit, welche einen Übergangszustand eines Abgasstroms zum Abgasreinigungskatalysator erfasst, wobei die Steuereinheit das Lernen beschränkt, wenn der Übergangszustand der Abgasströmung erfasst wird; und wobei die Übergangszustandserfassungseinheit auf der Basis einer Temperatur und einer Strömungsmenge des Abgases ...

WATER AND STEAM INJECTION IN COGENERATION SYSTEM

VERFAHREN ZUR REGENERATION EINES KRAFTFAHRZEUGTEILCHENFILTERS UND SYSTEM ZUR STEUERUNG DER REGENERATION SOLCH EINES FILTERS

DEVICE AND PROCESS FOR REMOVING SOOT OR THE LIKE FROM THE EXHAUST GASES OF AN INTERNAL-COMBUSTION ENGINE

Eine Vorrichtung zur Abgasreinigung

System, Verfahren und Computerprogramm zur Steuerung der Kraftstoffeinspritzung für einen Motor

Keramikfilter zur Abgasreinigung

KERAMISCHES HEIZELEMENT.

Zonenerwärmte einlassentzündete Dieselpartikelfilterregeneration

Es wird ein Abgassystem zur Verfügung gestellt, das durch eine Maschine erzeugtes Abgas verarbeitet. Das System umfasst: einen Partikelfilter (PF), der stromaufwärts der Maschine angeordnet ist und der Partikel aus dem Abgas herausfiltert; und ein Gitter, das ein elektrisches Widerstandsmaterial umfasst, das durch ein nicht leitfähiges Material in mehrere Zonen segmentiert ist und wobei das Gitter auf eine stromaufwärts gelegene Außenfläche des PF aufgebracht ist.

Vorrichtung und Verfahren zur Abgasreinigung

Exhaust gas purifying device e.g. catalyzer, for exhaust gas system of internal-combustion engine, has purifying elements that are radially and respectively supported at inner axial ends at bearing arrangement

The device (1) has two purifying elements (3) that are arranged one behind the other in a housing (2) with respect to a flow direction (9). The purifying elements are respectively fastened to outer axial ends (12) at the housing, where the ends are turned away from each other. A bearing arrangement (14) is axially arranged between the elements, and is arranged axially and adjustably relative to the housing. The purifying elements are radially and respectively supported at inner axial ends (15) at the bearing arrangement, where inner axial ends are turned away to each other. An independent claim is also included for an exhaust-gas processing device.

Abgasreinigungsfilter und Verfahren zu dessen Herstellung

Ein Verfahren zum Herstellen eines Abgasreinigungsfilters zum Einfangen von Partikeln zum Reinigen von Abgasen wird bereitgestellt. Ein ein organisches Bindemittel enthaltender Keramikwerkstoff wird in ein Wabenstück extrusionsgegossen, und das so gegossene Wabenstück wird dann getrocknet und auf eine vorbestimmte Länge geschnitten, sodass ein gegeossenes Wabenstück 100 vorbereitet ist, das Zwischenwände 11 und eine Vielzahl von Zellen 12 von im Wesentlichen dreieckigem Querschnitt aufweist. Große, bei Betrachtung von vorne im Wesentlichen sechseckige Öffnungen, werden durch das Verformen der Zwischenwände 11 bei Öffnungen 13 in den Zellen 12 des gegossenen Wabenstücks 100 bereitgestellt und geschlossene Abschnitte werden so angrenzend an die großen Öffnungen bereitgestellt. Danach wird das gegossene Wabenstück 100 kalziniert.

ANSAUG- UND AUSPUFFVORRICHTUNG FUER VERBRENNUNGSKRAFTMASCHINEN

I.c. engine exhaust gas temperature increasing device uses selectively closed throttle valve downstream of exhaust catalyser with simultaneous increase in quantity of fuel injected into engine

The exhaust gas temperature increasing device uses an exhaust throttle valve (49) inserted in the exhaust gas line (45,47), which is moved into a fully closed position by a valve control device, with simultaneous control of the main fuel injection device for the engine (1), for increasing the quantity of fuel injected by the fuel injection valves (32), for heating an emission control catalyser (46) inserted in the exhaust line upstream of the throttle valve to its required working temperature.. An Independent claim for an i.c. engine exhaust gas temperature increasing method is also included.

VORRICHTUNG ZUR REINIGUNG DER ABGASE VON VERBRENNUNGSMOTOREN, INSBESONDERE DIESELMOTOREN

Klappenvorrichtung für eine Verbrennungskraftmaschine

Klappenvorrichtung (1) für eine Verbrennungskraftmaschine mit einem Gehäuse (2), in dem ein von einem Fluid durchströmbarer Kanal (3) ausgebildet ist, in welchem ein Klappenkörper (4) angeordnet ist, der um eine Drehachse (5) einer Klappenwelle (6) schwenkbar ist, wobei der Klappenkörper (4) mindestens ein Klappenteil (7, 8) aufwiest, über einen Lagerabschnitt (9) auf der Drehachse (5) befestigt ist und wobei der Klappenkörper (4) über eine Stellvorrichtung in Drehung versetzbar ist, wodurch das mindestens eine Klappenteil (7, 8) gegen eine Sitzfläche (10, 11), die durch eine Innenwand des Geh, 11) weg drehbar ist, wobei der Lagerabschnitt (9) zwei Schenkelemente (16, 17) und ein Verbindungselement (18) aufweist, wobei der Lagerabschnitt (9) über die Schenkelelemente (16, 17) mit der Klappenwelle (6) verbunden ist und die Klappenwelle (6) von dem Verbindungselement (18) beabstandet ist.

VERBUNDMATTE

Verfahren und Vorrichtung zur Partikelentfernung aus Abgasen von Brennkraftmaschinen

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Entfernung von Partikeln, insbesondere Rußpartikeln, aus Abgasen von Brennkraftmaschinen. Erfindungsgemäß werden die Partikel über eine Elektrode (4) elektrostatisch aufgeladen. Die Partikel bzw. Partikelagglomerate werden durch einen metallischen Feinfilter (5) abgeschieden. Vorteilhafterweise dient das leitende Filtermaterial (5a) des Feinfilters (5), bevorzugt ein ferritisches Sintermetall, selbst als Niederschlagselektrode. An die Elektroden wird Hochspannung (6) angelegt (7, 10). Zeitweise, bevorzugt periodisch, wird durch das Feinfilter ein elektrischer Strom geleitet (11, 12), der eine Erwärmung des Filtermaterials (5a) des Feinfilters (5) über die Zündtemperatur der Partikel bewirkt. Bevorzugt wird eine zylinderförmige, kegelstumpfförmige und/oder kegelförmige Filterfläche (5a) verwendet.

Verfahren und Vorrichtung zur Abgasreinigung

Abgasreinigungssystem für eine Brennkraftmaschine

Eine elektronische Steuereinheit (8) schätzt das Fortschreiten des Wachstums eines Partikeldurchmessers einer in einem Dieselpartikelfilter (einem DPF) (33) angehäuften Asche auf Grundlage eines Betriebszustands einer Kraftmaschine (1) ab. Wenn bestimmt wird, dass ein abgeschätzter Partikeldurchmesser der Asche, der durch das Fortschreiten des Wachstums erreicht wurde, größer als ein vorbestimmter Wert ist, wird eine Regenerierung des Dieselpartikelfilters (33) selbst dann zwangsweise durchgeführt, wenn eine Menge von in dem Dieselpartikelfilter (33) angehäuften Partikelteilen niedriger als ein Bezugswert ist, bei dem der Dieselpartikelfilter (33) regeneriert werden sollte. Somit werden die Partikelteile durch Verbrennung eliminiert und die Asche wird von dem Dieselpartikelfilter (33) abgegeben.

Abgassteuervorrichtung und Abgassteuerverfahren

Eine Abgassteuervorrichtung für ein Hybridsystem hat einen Differenzdruckerfasser, der einen Differenzdruck eines Abgases zwischen einer stromaufwärtigen Seite und einer stromabwärtigen Seite eines Partikelfilters erfasst, eine Partikelmaterialablagerungsmengenabschätzeinheit (S209), die eine Menge an Partikelmaterial, das an dem Partikelfilter abgelagert ist, basierend auf dem erfassten Differenzdruck abschätzt, und eine Steuerung, die einen Verbrennungsmotor steuert, um eine Schwankung einer Menge des Abgases, das durch den Partikelfilter gelangt, in einen vorgegebenen Bereich zu bringen, und steuert einen Leistungsausgang durch einen Elektromotor, um eine schwankende Ausgangsleistung durch den Verbrennungsmotor zu kompensieren, wenn die Partikelmaterialablagerungsmengenabschätzeinheit die Ablagerungsmenge in dem Fall abschätzt, in dem die Menge des Abgases, das durch den Partikelfilter gelangt, schwankt, um den vorgegebenen Wert zu überschreiten.

Kühlelement und Abgasanlage, umfassend ein Kühlelement

Die Erfindung betrifft ein Kühlelement (1) für eine Abgasanlage (2), umfassend zumindest einen Wärmetauscher (3), zumindest einen Zufluss (4), durch den ein Fluid dem Wärmetauscher (3) zuführbar ist, und zumindest einen Abfluss (5), über den das Fluid von dem Wärmetauscher (3) abführbar ist, wobei der Wärmetauscher (3) in eine Öffnung eines Abgasrohres (7) der Abgasanlage (2) einsetzbar ist.

Verfahren und Steuerung einer Brennkraftmaschine mit einem Abgasnachbehandlungssystems

Es wird ein Verfahren zur Steuerung einer Brennkraftmaschine mit einem Abgasnachbehandlungssystem beschrieben. Es wird wenigstens zwischen einem ersten Zustand und einem zweiten Zustand des Abgasnachbehandlungssystems unterschieden. Die Zustände unterscheiden sich durch wenigstens einen Wert wenigstens einer Betriebskenngröße. Beim Übergang von dem zweiten in den ersten Zustand wird ein ersten Sonderbetriebsprogramm durchgeführt.

Abgaspfad für eine Brennkraftmaschine, Brennkraftmaschine mit einem solchen Abgaspfad und Verfahren zum Agglomerieren von Rußpartikeln im Abgas einer Brennkraftmaschine

Die Erfindung betrifft einen Abgaspfad (3) für eine Brennkraftmaschine (1), mit einer Abgasturbine (5), einem ersten, stromaufwärts der Abgasturbine (5) angeordneten und mit der Abgasturbine (5) strömungstechnisch verbundenen Leitungsabschnitt (7), und mit einem zweiten Leitungsabschnitt (9), der an einer Ausmündestelle (11) aus dem ersten Leitungsabschnitt (7) ausmündet, und stromaufwärts - in Richtung eines Abgasstroms durch den ersten Leitungsabschnitt (7) gesehen - der Ausmündestelle (11) an einer Einmündestelle (13) in den ersten Leitungsabschnitt (7) einmündet, wobei der zweite Leitungsabschnitt (9) eingerichtet ist, um einen Teil von entlang des ersten Leitungsabschnitts (7) strömendem Abgas an der Ausmündestelle (11) abzuzweigen und zu der Einmündestelle (13) zurückzuführen, wobei in dem ersten Leitungsabschnitt (7) und/oder in dem zweiten Leitungsabschnitt (9) wenigstens eine Abgasstromverzögerungseinrichtung (15) angeordnet ist, die eingerichtet ist, um den entlang des ersten ...

Verfahren und Anordnung zum Reinigen eines in einem Abgasstrang strömenden Abgasstromes eines Ottomotors

The invention relates to a method and arrangement for purifying an exhaust gas stream of a spark ignition engine (1) flowing in an exhaust gas line (2). An air/fuel mixture is preferably supplied to said spark ignition engine by means of direct injection. For an improved purification, the exhaust gas flows, in succession, through the exhaust gas line (2), through at least one honeycomb body (3) with a catalytically active coating, preferably with a three-way coating, and through a particle filter (4) with a coating which accumulates at least one pollutant component, in particular, hydrocarbon (HC), carbon monoxide (CO) and/or nitrogen oxide (NOx) in an at least temporary manner. The invention is particularly suited for exhaust gas systems of spark ignition engines (1). In addition to its existing task of collecting soot particles, the particle filter (4) advantageously assumes the function of carrying out, in particular, the supplementary oxidation of residual hydrocarbons (HC) as well ...

ABGASREINIGUNGSVORRICHTUNG

BENZINMOTOR MIT ABGASANLAGE ZUR VERBRENNUNG VON PARTIKELN

Gas duct with honeycomb flow insert has the cylindrical insert held between the conical end pieces of the duct

A gas duct with a cylindrical honeycomb insert (22) has a simplified construction in which the insert is located inside the cylindrical central part of the duct by a spacing layer (23) between the insert and the duct. The duct is fitted with conical end pieces (24a,25b) which are pressed into the central section to hold the outer rims of the insert. This leaves the complete cross section of the insert for the gas flow. The insert can be a ceramic catalyser and the duct sections can be metal/ The spacing layer can be glass wool or metal wool.

WABENFÖRMIGE STRUKTUR UND VERFAHREN ZUR HERSTELLUNG DERSELBEN

Abgasreinigungsanlage und Verfahren für einen Verbrennungsmotor

Wabenartige Struktur

Antriebseinrichtung für ein Kraftfahrzeug

Die Erfindung betrifft eine Antriebseinrichtung (1) für ein Kraftfahrzeug, mit einem Abgas erzeugenden Antriebsaggregat (2), einer Abgasnachbehandlungseinrichtung (4) zur Nachbehandlung des Abgases, einer Wassereinbringungseinrichtung (9) zum Einbringen von Wasser in wenigstens einen Brennraum des Antriebsaggregats (2) und einer einen Adsorptionsspeicher (11) aufweisenden Wassergewinnungseinrichtung (10) zur Bereitstellung des einzubringenden Wassers. Dabei ist vorgesehen, dass der Adsorptionsspeicher (11) wärmeübertragend um die Abgasnachbehandlungseinrichtung (4) herum angeordnet ist.

Abgasreiniger für eine Brennkraftmaschine

Partikelfalle für einen Dieselmotor

Motorabgasfilter

Abgasreinigungsanlage für eine Brennkraftmaschine

Abgasreinigungsanlage für eine Brennkraftmaschine, die in Strömungsrichtung des Abgases gesehen einen Partikelfilter (1) und stromab des Partikelfilters (1) mindestens einen Katalysator (2, 3, 4) aufweist, dadurch gekennzeichnet, dass - der Partikelfilter motornah in einem Abgaskrümmer oder vor oder nach einem Abgasturbolader angeordnet ist und - der stromab des Partikelfilters (1) angeordnete mindestens eine Katalysator (2, 3, 4) einen Zelldichtebereich von etwa 900 bis 2000 cpsi aufweist.

Tail pipe arrangement for exhaust system of vehicle, comprises inlet, by which surrounding air is introduced into exhaust flow for cooling exhaust flow

The tail pipe arrangement (10) comprises an inlet (16), by which the surrounding air (20) is introduced into the exhaust flow for cooling the exhaust flow. A primary pipe (12) is provided, which introduces the exhaust gas area by area into an inlet opening (24) of a secondary pipe (14) in the flow direction (18).

Wabenstrukturkörper

Verfahren zur Abgasreinigung

Verfahren zur Abgasreinigung, worin ein NOx-absorbierendes/-abgebendes Mittel auf einem Partikelfilter (22) mit Oxidationsfunktion getragen wird, wobei das NOx-absorbierende/-abgebende Mittel NOx einfängt und festhält, wenn ein Sauerstoffüberschuß in der Umgebung vorliegt, und das festgehaltene NOx abgibt, wenn die Sauerstoffkonzentration in der Umgebung sinkt, dadurch gekennzeichnet, daß; wenn das NOx-absorbierendes/-abgebende Mittel durch eine Schwefelkomponente vergiftet wurde, das Luft/Kraftstoff-Verhältnis des Abgases, das in den Partikelfilter strömt, auf einen ersten fetten Wert eingestellt wird, wenn die Menge der Partikel, die sich auf dem Panikelfilter angelagert haben, kleiner ist als eine vorbestimmte Menge, und das Luft/Kraftstoff-Verhältnis des Abgases, das in den Partikelfilter strömt auf einen zweiten fetten Wert eingestellt wird, der höher ist als der erste Wert, wenn die Menge der Partikel, die sich auf dem Partikelfilter abgelagert haben, größer ist als eine vorbestimmte ...

Vorrichtung zur Abgasreinigung von Kraftmaschinen

Die Durchlässigkeit eines an einer Dieselkraftmaschine 1 angebrachten DPF 21 wird dadurch ermittelt, dass der scheinbare Durchlassflächeninhalt (A) auf der Grundlage einer Differenz der Drücke zwischen der stromaufwärtigen Seite und der stromabwärtigen Seite des DPF 21 und auf der Grundlage von anderen Kraftmaschinendaten berechnet wird, dass ein Alarm zu einem Fahrer auf Grundlage der Ermittlungsergebnisse abgegeben wird und dass der Betriebsmodus umgeschaltet wird, um den DPF 21 wiederherzustellen. Eine durch eine Zerstörung verursachte anormale Vergrößerung des Durchlassflächeninhalts wird genau erfasst, und die PM werden nicht in die Außenluft in langen Zeitperioden aufgrund der Zerstörung des DPF 21 ausgelassen. Des Weiteren kann der DPF 21 zuverlässig ausgebrannt und wiederhergestellt werden, ohne dass der DPF 21 demontiert werden muss oder ohne dass er bei jedem Betriebsmodus der Kraftmaschine 1 in unerwünschter Weise überhitzt wird.

Method and apparatus for removing particles

Process and apparatus for removing sulphur dioxide from flue gas

... SO2 is removed from flue gases by passing them through a reactor having a plurality of independent compartments containing a porous bed of catalyst which accelerates the oxidation of SO2 to SO3. The reactor has duct means for directing the flue gases through the compartments and a means for selectively isolating one or more of the compartments to enable purging gas to be passed into the isolated compartment so as to re-activate the catalyst while passing the flue gases through at least some of the remaining compartments. As shown in Fig. 2, SO2-containing flue gases, after passing through an electrostatic dust precipitator (38), see Fig. 1 (not shown), enter the cylindrical reactor through duct 72 and pass through those radially spaced cells 52 containing catalyst which are not isolated by hood members 82, 84. The cells 52 have highly perforated walls. The treated flue gases leave via duct 74. Hood members 82, 84 of sectorial cross-section rotate about shaft 91 fitted ...

EXHAUST GAS CLEANER

Engine exhaust system

Burning carbon from an exhaust gas filter of an internal combustion engine

A method and apparatus for disposing of particulate matter retained in an exhaust gas filter of an internal combustion engine, using an electric current source. For the purpose of good auxiliary energy utilization and minimization of equipment complexity, ignition and combustion of the particulates are initiated by the flow of current through the particulate matter itself (the particulates themselves serving as an electrical heating conductor). A suitable electrode configuration is provided to supply the ignition energy to the filter element. The electric input for the combustion of the particulates is applied via an impressed power supply.

DEVICE FOR REMOVING SOOT FROM EXHAUST GAS

Soot particles are removed from the exhaust gas of an internal combustion engine in a cyclone 11, which divides the gas into a clean gas flow, which exits through axial outlet 15, and a particle-enriched gas fraction which flows down to the closed end of the cyclone through an annular passage 18 and in through openings 25 to a filter 27, which is heated by a fuel-fed burner 19 to burn the soot, the combustion products returning to the main body of the cyclone by outlet 17. The filter may be axial flow or radial flow (Fig. 3) and may be horizontally oriented (Fig. 4). Outlet 15 may be extended down to embrace outlet 17 (Figs. 5, 6). …… ...

Exhaust gas clean-up

Exhaust gas, typically from an internal combustion engine, is passed through a plurality of tubular nozzles or passages 5 disposed in a pipe 2 connected to exhaust gas piping 1. Under the influence of reduced pressure in the nozzles or passages, water vapour in the gas liquifies and removes pollutant gases from the exhaust. The liquid may be collected 9 and the reduced pressure obtained by use of a suction device 7.

Engine exhaust system

An exhaust system for an internal combustion includes an exhaust gas after-treatment device such as a catalytic converter 26 or a gas storage trap 28, and means for cooling the exhaust gases upstream of the after-treatment device. The cooling means include a turbine-blower 20, 30 comprising a turbine 20 driven by the exhaust gases from the engine and a blower 30 driven by the turbine 20 and connected by auxiliary pipes 32, 38 to draw gases from and return gases to a section 22 of the exhaust system downstream of the turbine 20. Recirculation of exhaust gases by the blower 30 through the auxiliary pipes 32, 38 and the section 22 of the exhaust system serves to cool the exhaust gases by heat loss through the walls of the auxiliary pipes 32, 38.

Device for measuring the amount of particles contained in a fluid,notably in the exhaust gas of an internal-combustion engine

Vehicle exhaust cleaner

Combined power supply and reactor bed in a gas purifier

A reactor particularly for the plasma treatment of internal combustion engine exhaust gases, in which a power supply and reactor bed are connected directly and enclosed in an earthed metal chamber which both isolates the high voltage power supply and acts as a Faraday cage preventing the emission of electromagnetic radiation from the power supply or plasma.

Removal of particulate matter from engine exhaust gases

A heat exchanger

REGENERATING A CATALYTIC FILTER

Improvements in or relating to Internal Combustion Engined Trucks

... 1,154,227. Disposing of exhaust gases. HANS STILL G.m.b.H. 6 Sept., 1966 [7 Sept., 1965], No. 39877/66. Heading B7H. [Also in Division F1] Exhaust gases from an engine driving a forklift truck are cooled by mixing, in a chamber 10, with air drawn in through a filter 6 by an impeller 7. The exhaust gases flow through a silencer 8 and flame-trap 9 to a nozzle 15 situated in chamber 10 opposite a baffle 11 which improves mixing with the air. The fan 7 drives the air towards the chamber 10, part of the air flowing into chamber 10 through the pipe 13 and the remainder escaping through a heat exchanger 5. In a modification some of the air from the fan 7 flows over the exhaust pipe and engine.

Exhaust Gas Treatment Device and Method for Operating an Exhaust Gas Treatment Device

An exhaust gas treatment device for an internal combustion engine, with a first particle filter and a second particle filter arranged downstream of the first particle filter in the flow direction of the exhaust gas through the exhaust gas treatment device. The second particle filter includes a support device that can be flown through by the exhaust gas, on which a filter unit is disposed. A pore size of the filter unit is less than a pore size of the support device. A method for operating an exhaust gas treatment device for an internal combustion engine is also provided.

Method and device for regenerating a particle filter

A method for the targeted initiation of a regeneration of a particle filter in an exhaust-gas duct of an internal combustion engine which has a catalytic converter downstream of the particle filter in the flow direction of the exhaust gas, the regeneration of the particle filter taking place by means of an oxidative burn-off of the particles during the regeneration phase.

Exhaust purification system of internal combustion engine

An exhaust purification system of an internal combustion engine includes an NO X storage reduction catalyst device which is arranged in an engine exhaust passage. The NO storage reduction catalyst device stores SO X simultaneously with NO X . When the stored SO X amount exceeds a predetermined allowable amount, the SO X is made to be released by SO X release control which raises the temperature of the NO X catalyst device to the SO X releasable temperature, then makes the air-fuel ratio of the exhaust gas which flows into the NO X catalyst device the stoichiometric air-fuel ratio or rich. The NO X catalyst device has a residual SO X storage amount which finally remains even if performing SO X release control depending on the temperature of the NO X catalyst device when performing SO X release control. The system uses the residual SO X storage amount of the current SO X release control as the basis to calculate the SO X release speed at each timing in the current SO X release control.

Exhaust gas cleaning system for engineering vehicle

An exhaust gas cleaning system is provided in an engineering vehicle such as a hydraulic excavator. During automatic regeneration, when a gate lock lever 5 is in a locked state and work is not performed, the exhaust gas temperature detected by the exhaust temperature detecting device 37 may be lower than the threshold value, so temperature-rising assistance is started as follows. The minimum engine output PS 1 (pump discharge pressure P 1 and pump discharge amount Q 1 ) is brought to engine output PS 2 (pump discharge pressure P 2 and pump discharge amount Q 2 ). In this way, a hydraulic load is applied to an engine to thereby increase exhaust gas temperature. When the work is resumed during the regeneration, an operator pulls down the gate lock lever to the first position A, and the engine output is returned to PS 1. Thus, the temperature-rising assistance is stopped, however the automatic regeneration is continued.

Particulate matter sensor

A particulate matter sensor includes a ceramic rod, a first metal layer deposited on the ceramic rod, a ceramic layer deposited on the first metal layer, and a second metal layer deposited on the ceramic layer. The first metal layer serves as a source electrode, and the second metal layer serves as a detection electrode. In another embodiment, a particulate matter sensor includes a metal rod, a ceramic sheet deposited or wrapped around the ceramic rod, and a metal layer deposited on the ceramic layer or sheet. The metal rod serves as a source electrode, and the second metal layer serves as a detection electrode.

Filtration arrangement for an exhaust aftertreatment system for a locomotive two-stroke diesel engine

A diesel locomotive filter arrangement for maintaining elements used to filter particulate matter generated by diesel engines. Servicing the filters is accomplished in a modular fashion through either the complete aftertreatment system and/or the individual elements in-situ. As to the in-situ arrangement, modularity is accomplished without structural liability to the system and with minimum system joint breakage. As to the complete system arrangement, modularity is accomplished via residing the entirety of the aftertreatment system on a support tray which is removable with minimum connection separation.

Particulate filter ash loading prediction method and vehicle using same

A particulate filter ash loading prediction method including the steps of determining a service age for the particulate filter; calculating an ash accumulation rate in the particulate filter; determining a maximum service age for the particulate filter dependent upon the ash accumulation rate; and comparing the service age to the maximum service age. If the service age exceeds the maximum service age then indicating that a service and/or replacement of the particulate filter is needed due to ash loading.

Particulate filter ash loading prediction method and vehicle using same

A particulate filter ash loading prediction method including the steps of determining a maximum average time for the filter; performing a calculation of a running average of time between regenerations of the filter; calculating an end-of-service life ratio of the filter dependent upon the maximum average time and the running average. The method further includes the steps of determining a delta pressure adjustment factor to compensate for ash loading of the filter depending upon the end-of-service life ratio; and comparing the delta pressure adjustment factor to a predetermined maximum delta pressure value, and, if the delta pressure adjustment factor exceeds the predetermined maximum normalized delta pressure adjustment factor, then indicating that a service or replacement of the filter is needed due to the ash loading.

Control of aftertreatment regeneration in a hybrid powered vehicle

A method for controlling aftertreatment regeneration for a system having a hybrid powertrain is described. The method includes determining that an engine aftertreatment regeneration is indicated when a regeneration request index exceeds a first threshold. The method includes determining an acceptable battery usage amount based on a current battery state of charge (SOC) and a minimum battery SOC. The method further includes determining a battery usage amount for an engine aftertreatment regeneration operation. The method includes initiating an engine aftertreatment regeneration when the battery usage amount is less than or equal to the acceptable battery usage amount.

Multiple Flow Path Exhaust Treatment System

A vehicle exhaust system for an engine having a plurality of combustion chambers includes a first emission treatment device, a second emission treatment device and a housing defining a first exhaust passageway in fluid communication with the combustion chambers and containing the first emission treatment device. A second parallel exhaust passageway is in fluid communication with the combustion chambers and contains the second emission treatment device. The first and second passageways share a common wall having a serpentine shape such that the cross-sectional area of the passageways varies along a direction of exhaust flow. The first emission treatment device is positioned at a location of increased cross-sectional area in the first passageway and the second emission treatment device is positioned at an axially offset location of increased cross-sectional area in the second passageway.

Mats

A mat for supporting a monolith, the mat comprising one or more first portions comprising fibres at least partially coated with an erosion resistant inorganic (e.g. silica) gel composition or a precursor thereof.

System and method for controlling regeneration of an exhaust after-treatment device

A method for controlling regeneration of an exhaust after-treatment device for an internal combustion engine in a vehicle includes establishing a baseline value for a mass of soot collected in the exhaust after-treatment device. The baseline value is a threshold mass of soot to be reached for regenerating the filter, and is determined as a function of a speed of the engine and a quantity of fuel entering the engine. The method also includes modifying the baseline value in response to an engine operating parameter that alters a fuel-air ratio of a combustible mixture entering the engine to generate a modified baseline value. The method additionally includes regenerating the exhaust after-treatment device using the modified baseline value. A system for controlling regeneration of an exhaust after-treatment device for an internal combustion engine is also provided.

System for introducing fuels into the exhaust tract of a motor vehicle, and fuel vaporizer for the same

The invention relates to a system for introducing fuel into the exhaust line of a motor vehicle, having a fuel evaporator with a housing, which has an inlet and an outlet, and a heating device arranged in the housing, and a pump for pumping fuel into the fuel evaporator via the inlet. Provision is made for an inlet of the pump to be connected to a branching, which encompasses a first branch for supplying fuel and a second branch for supplying air. The invention further relates to a fuel evaporator for such a system

Method Of Operating A Fuel Processor

In situations where the demand for syngas is prolonged, a fuel processor is operated continuously to provide a syngas stream for a prolonged period. The equivalence ratio of reactants supplied to the fuel processor is controlled so that a high fuel-conversion efficiency to hydrogen and carbon monoxide is obtained at temperatures correspondent to carbon production balance, where carbon is formed and gasified at approximately the same rate in the fuel processor.

Exhaust particulate filter system and methods

A method of operating an exhaust particulate filter system for an internal combustion engine includes transmitting electromagnetic energy, for example having a frequency above about 2 GHz through an exhaust particulate filter containing trapped soot. The transmitted electromagnetic energy may be attenuated in response to the trapped soot, and a filter soot loading value calculated based at least in part upon a correlation among an attenuation of the electromagnetic energy, a temperature of the filter, and a mass of the trapped soot. An algorithm based upon a partial derivative of an equation representing the correlation may be used in calculating the filter soot loading value, and a resulting soot mass. Responsive to determining the calculated soot mass satisfies regeneration suitability conditions, a regeneration initiation command may be outputted.

Adaptive diesel particulate filter regeneration control and method

An after-treatment device that includes a diesel particulate filter (DPF) requiring periodic regeneration includes a sensor providing a signal indicative of a soot accumulation and at least one device providing an operating parameter indicative of a work mode of the machine. A controller determines a soot loading of the DPF based least partially on the soot signal, and a readiness level based on the operating parameter. A soot level trigger is determined based on a time period since a regeneration was completed and the readiness level, and a debounce time period is determined based on the soot loading and the readiness level. The controller is configured to initiate a regeneration event of the DPF when the debounce time period has expired while the soot loading exceeds the soot level trigger.

Particulate filter regeneration process diagnostic

A system for the treatment of exhaust gases includes an engine, an exhaust system, and a controller. The exhaust aftertreatment system is configured to accept exhaust gas from the engine and includes a particulate filter configured to filter particulate matter from the exhaust gas. A controller is configured to determine an actual temperature of the particulate filter during a regeneration process and analyze the actual temperature relative to a temperature deviation threshold. The controller is configured to adjust the temperature deviation threshold in real time based, at least in part, on an operating condition of the engine and a mass flow of the exhaust gas.

Methods And System For Ash Detection In Exhaust Particulate Filter

A method of detecting ash in an exhaust particulate filter system for an internal combustion engine includes transmitting electromagnetic energy through an exhaust particulate filter containing soot and ash, and sensing a strength of the transmitted electromagnetic energy after having been attenuated in response to the soot. The method further includes electronically storing a filter monitoring history responsive to a difference between the transmitted strength and the sensed strength of the electromagnetic energy, and detecting an amount of the ash based at least in part upon a pattern of electromagnetic energy attenuation defined by the stored filter monitoring history. An exhaust particulate filter system for implementing related methodology includes a microprocessor configured to determine a value indicative of an amount of ash contained within an exhaust particulate filter responsive to a pattern of electromagnetic energy attenuation defined by a stored filter monitoring history.

Exhaust gas aftertreatment device and method for a gasoline engine

Embodiments for an exhaust gas aftertreatment device are provided. In one example, an exhaust gas aftertreatment device for a gasoline engine comprises a filter body with porous filter walls through which exhaust gas flows to remove soot, the porous filter walls containing a first catalyst material and having a coating of a second catalyst material on partial areas of the filter walls. In this way, a particulate filter and catalyst may be provided in a common aftertreatment device.

Reduction-catalyst-coated diesel particle filter having improved characteristics

A diesel particle filter which comprises a ceramic wall flow filter substrate and two coatings is described. The first coating which is applied in the inflow channels and is composed of high-melting materials has such a nature that it closes the inflow channels and pores in the wall connecting the inflow channels and outflow channels to soot particles on the inflow side without preventing passage of the gaseous exhaust gas constituents. The second coating is introduced into the wall between inflow channels and outflow channels and is of such a nature that it can effectively catalyze the selective reduction of nitrogen oxides by means of a reducing agent. The resulting component is an SCR-catalytically active particle filter and displays excellent banking-up pressure properties combined with high filtration efficiency and good regeneration properties. Furthermore, the component displays good aging stability of the NO x conversion activity.

Ceramic honeycomb filter and its production method

A ceramic honeycomb filter comprising a ceramic honeycomb structure having large numbers of flow paths partitioned by porous cell walls, and plugs disposed in the flow paths alternately on the exhaust gas inlet or outlet side, to remove particulate matter from an exhaust gas passing through the porous cell walls; the porous cell walls having porosity of 45-75%, the median pore diameter A (μm) of the cell walls measured by mercury porosimetry, and the median pore diameter B (μm) of the cell walls measured by a bubble point method meeting the formula of 35<(A−B)/B×100≦70, and the maximum pore diameter of the cell walls measured by a bubble point method being 100 μm or less.

Reductant Injection Control System

A control system for reducing nitrogen oxides in an engine exhaust of an engine includes an emissions catalyst having an inlet adapted to receive an exhaust from the engine. A reductant tank stores a reductant. An injector is in fluid communication with the reductant tank and is operable to inject the reductant into the exhaust upstream of the catalyst. A reductant pump pumps the reductant from the reductant tank to the injector. A controller determines a target pressure of the reductant based on an engine operating condition and operates the reductant pump based on the target pressure.

Desulfurization method for lnt system

A desulfurization method of a nitrogen oxide absorption catalyst when diesel is used may include determining how many times a regeneration of a diesel particulate filter (DPF) is completed, ending a DPF regeneration, if the number of times of the DPF regeneration reaches a predetermined value and entering into a desulfurization mode to desulfurize the DPF, ending the desulfurization mode after the desulfurization mode is performed for a predetermined time, and calculating a particulate matters (PM) amount that is trapped in the DPF after the desulfurization, compensating the trapped PM amount, and determining a time of the DPF regeneration. A desulfurization timing is determined based on the number of times that the DPF is regenerated to be able to simplify the desulfurization logic and also reduce the memory of ECU, when the LNT catalyst is poisoned by a small amount of sulfur included in exhaust gas.

Exhaust gas purification system in upland area

When a diesel particulate diffuser (“DPD”) of a vehicle traveling in a normal drive mode in the upland area is to be automatically regenerated by raising a temperature of exhaust gas from an engine, an exhaust gas purification system determines an upland full-load injection quantity from the atmospheric pressure in the upland area and an engine speed while the vehicle is in motion and drives the vehicle with the injection quantity determined. The system determines, during the regeneration mode, an upland drive regeneration injection quantity obtained by decreasing the upland full-load injection quantity on the basis of a quantity required for the post-injection. The injection quantity is gradually decreased from the upland full-load injection quantity to the upland regeneration drive injection quantity when the vehicle shifts from the normal drive mode in the upland area to the upland regeneration mode, so that the decreased quantity is used for the post-injection.

Selective catalytic reduction sensor

Provided is an SCR sensor that does not degrade a measurement accuracy of a quality sensor even when a remaining amount of a urea tank is reduced. A quality sensor 122 is installed between a minimum remaining amount liquid level S and a bottom portion 105 b of a urea tank 105; a drop pipe 131 is installed from a ceiling portion of the urea tank 105 to a top space in the urea tank 105; a support 174 is installed from the bottom portion to the ceiling portion of the urea tank 105; the quality sensor 122 and the drop pipe 131 are integrated through the support 174; and a bubble diffusion region B caused by the urea aqueous solution dropping from the drop pipe 131 is out of a sensitive region F of the quality sensor 122.

Method for Operating a Particle Filter

A method for operating a particle filter that filters particles contained in the exhaust of motor vehicle combustion engines. A conditioning step is performed such that the separation efficiency of the particle filter for particles is increased relative to the value existing in the new condition.

Exhaust gas purification system

A diesel particulate defuser (DPD) for collecting particulate matter (PM) in exhaust gas is connected to an exhaust pipe of a diesel engine, and when the amount of PM in the DPD becomes equal to or greater than a predetermined amount, the exhaust gas temperature of the diesel engine is increased by performing exhaust pipe injection and DPD is automatically regenerated. In such an exhaust gas purification system, an exhaust gas temperature during DPD regeneration in automatic regeneration is detected, a difference between the detected exhaust gas temperature and a target regeneration temperature is determined, and in a case where an exhaust pipe injection amount is PID controlled based on the difference, when a transition is made from the traveling automatic regeneration to the idle automatic regeneration conducted during a stop, an integral control term in the PID control is reset to zero to control the exhaust pipe injection amount.

EXHAUST PIPE INJECTION CONTROL DEVICE

An exhaust pipe injection control device for controlling an appropriate fuel injection amount regardless of engine rotation speed. The exhaust pipe injection control device includes: a target injection amount setting unit which sets, according to an engine rotation speed and an exhaust gas flow rate, a target injection amount that is injected in a single injection from an exhaust pipe injector; a base pulse width (“BPW”) map in which a fuel injection time of the exhaust pipe injector is set so that, with respect to the target injection amount and an exhaust pipe injection fuel pressure, fuel in the target injection amount is injected; and an exhaust pipe injection executing unit which performs injection from the exhaust pipe injector by referring to the BPW map based on the target injection amount and the exhaust pipe injection fuel pressure. 1. An exhaust pipe injection control device comprising:a diesel particulate filter which is installed in an exhaust pipe of an engine and which collects particulate matter;an exhaust pipe injector which is installed upstream of the diesel particulate filter and which injects fuel into the exhaust pipe;a feed pump which supplies fuel to the exhaust pipe injector;a target injection amount setting unit which sets, according to an engine rotation speed and an exhaust gas flow rate, a target injection amount that is injected in a single injection from the exhaust pipe injector;an injection time map in which a fuel injection time of the exhaust pipe injector is set so that, with respect to the target injection amount and an exhaust pipe injection fuel pressure that is a pressure of fuel that acts on the exhaust pipe injector, fuel in the target injection amount is injected; andan exhaust pipe injection executing unit which performs injection from the exhaust pipe injector by referring to the injection time map based on the target injection amount and the exhaust pipe injection fuel pressure.2. The exhaust pipe injection control ...

SYSTEM FOR INJECTING FUEL INTO EXHAUST PIPE

A system for injecting fuel into an exhaust pipe and preventing fuel leakage. An exhaust pipe is connected to an engine via an exhaust adaptor and the fuel is injected directly into the exhaust pipe through a fuel injection valve provided in the exhaust adaptor. A lower end of the exhaust adaptor is provided with a lower flange part to which a front end flange part of the exhaust pipe is connected, and a tubular shielding part for preventing the fuel from falling onto flange surfaces and of the front end flange part and the lower flange part protrudes into the exhaust pipe. 15-. (canceled)6. A system for injecting fuel into an exhaust pipe , in which the exhaust pipe is connected to an engine via an exhaust adaptor and fuel is injected directly into the exhaust pipe through a fuel injection valve provided in the exhaust adaptor ,wherein a lower end of the exhaust adaptor is provided with a lower flange part to which a front end flange part of the exhaust pipe is connected, and a tubular shielding part for preventing the fuel from falling onto flange surfaces of the front end flange part and the lower flange part is provided in such a manner as to protrude into the exhaust pipe.7. The system for injecting fuel into an exhaust pipe according to claim 6 , wherein a predetermined space for preventing the fuel from oozing is provided between the exhaust pipe and the shielding part in a radial direction of the exhaust pipe.8. The system for injecting fuel into an exhaust pipe according to claim 6 , wherein a molybdenum-coated gasket is interposed between the lower flange part of the exhaust adaptor and the front end flange part of the exhaust pipe.9. The system for injecting fuel into an exhaust pipe according to claim 7 , wherein a molybdenum-coated gasket is interposed between the lower flange part of the exhaust adaptor and the front end flange part of the exhaust pipe.10. The system for injecting fuel into an exhaust pipe according to claim 6 , wherein the shielding ...

Method For Reducing The Rate Of Exhaust Heat Loss

Disclosed is a method for reducing the rate of exhaust heat loss. The method comprises the steps of determining whether an engine is motoring and determining whether a diesel particulate filter needs to be regenerated. Further, the method comprises the step of closing an air throttle to a substantially closed position for reducing the flow of intake gas into the engine if the diesel particulate filter needs to be regenerated and if the engine is motoring. Further yet, the method comprises the step of opening the EGR valve to an at least partially open position for allowing the exhaust gas to recirculate through the engine if the diesel particulate filter needs to be regenerated and if the engine is motoring.

Exhaust gas processing device

An exhaust gas treatment method having a particulate matter (PM) sensor on which a part of PM exhausted from a diesel particulate filter (DPF) may be attached and that generates a signal, may include determining a sensor trap PM model amount that may be trapped on the PM sensor in a condition that the diesel particulate filter may be operated normal according to an engine driving condition and a variation thereof, determining a sensor trap PM real amount that may be attached on the PM sensor by using the signal that may be generated from the PM sensor, and determining a condition of the diesel particulate filter by comparing the sensor trap PM model amount and the sensor trap PM real amount.

EXHAUST GAS PURIFICATION SYSTEM

An exhaust gas purification system is provided with an exhaust gas purification device which is arranged in an exhaust gas route of a common rail type engine, and is structured such that a plurality of renewing modes which burn and remove a particulate matter deposited within the exhaust gas purification device is executed. One of the plurality of renewing modes is an initialization renewing (a forced renewing) mode which supplies a fuel into the exhaust gas purification device by a post injection regardless of a clogged state of the exhaust gas purification device, in the case that an accumulated drive time of the engine becomes equal to or more than a previously set time. 1. An exhaust gas purification system comprising: an exhaust gas purification device which is arranged in an exhaust gas route of a common rail type engine; and the exhaust gas purification system being structured such that a plurality of renewing modes for burning and removing a particulate matter deposited in the exhaust gas purification device can be executed , whereinone of a plurality of renewing modes is an initialization renewing mode which supplies a fuel into the exhaust gas purification device by a post injection regardless of a clogged state of the exhaust gas purification device, in the case that an accumulated drive time of the engine becomes equal to or more than a previously set time.2. The exhaust gas purification system according to claim 1 , further comprising:renewal advance notifying means which calls attention for promoting execution of each of the renewing modes; andrenewal admittance input means which allows the execution of each of the renewing modes, whereinin the case that the renewal admittance input means is in a non-operated state under operation of the renewal advance notifying means, the initialization renewing mode is not executed.3. The exhaust gas purification system according to claim 2 , wherein the non-operated state of the renewal admittance input means ...

Exhaust treatment device with integral mount

An exhaust treatment device includes an insulation material positioned between an inner shell and an outer shell. An inlet tube has an end in communication with a cavity defined by the inner shell. A substrate for treating engine exhaust is positioned within the inner shell. A metal mounting ring is positioned between the inner and outer shells and includes a mounting provision for receipt of a fastener.

EXHAUST GAS PURIFICATION SYSTEM

An exhaust gas purification device is arranged in an exhaust gas route of a common rail type engine. At least one of an intake air throttle device and an exhaust gas throttle device are arranged in intake and exhaust systems of the engine. In the case that a clogged state of the exhaust gas purification device becomes equal to or more than a prescribed level, an auxiliary renewing mode which raises the temperature of an exhaust gas from the engine by actuating at least one of the intake air throttle device and the exhaust gas throttle device is executed, and in the case that the clogged state of the exhaust gas purification device is not improved even by executing the auxiliary renewing mode, a forced renewing mode which supplies a fuel into the exhaust gas purification device by a post injection is executed. 1. An exhaust gas purification system comprising:an exhaust gas purification device which is arranged in an exhaust gas route of a common rail type engine; andat least one of an intake air throttle device and an exhaust gas throttle device which are arranged in intake and exhaust systems of the engine, whereinin the case that a clogged state of the exhaust gas purification device becomes equal to or more than a prescribed level, an auxiliary renewing mode which raises a temperature of an exhaust gas from the engine by actuating at least one of the intake air throttle device and the exhaust gas throttle device is executed, and in the case that the clogged state of the exhaust gas purification device is not improved even by executing the auxiliary renewing mode, a forced renewing mode which supplies a fuel into the exhaust gas purification device by a post injection is executed.2. The exhaust gas purification system according to claim 1 , wherein in the case that an accumulated drive time of the engine is equal to or more than a set time which is previously set claim 1 , the mode is changed to the forced renewing mode regardless of the clogged state of the ...

Exhaust Gas Purifying Device

An exhaust gas emission control system includes a cylindrical inflow body and an inflow pipe into which exhaust gas flows. The exhaust gas emission control system also includes a cylindrical outflow body and an outflow pipe from which the exhaust gas flows. The inflow pipe is provided with a louver member that covers an opening of the inflow body near an upstream side of an exhaust gas flow direction. The louver member is provided with slits and inclined plates capable of changing a flow direction of the exhaust gas passing through the slits into a desired direction.

DIESEL ENGINE AND EXHAUST AFTERTREATMENT SYSTEM AND METHOD OF TREATING EXHAUST GASES FROM A DIESEL ENGINE

In a diesel engine and exhaust aftertreatment system, a controller is arranged to control operation of the engine to obtain a first set of exhaust characteristics and to control a fuel injector to inject fuel upstream of a DPF at a first rate of injection until at least one condition is attained, and, after the at least one condition is attained, to control the fuel injector so that a rate of fuel injection is reduced and to contra! operation of the engine to obtain a second set of exhaust characteristics so that regeneration of the DPF occurs. At least one characteristic of the first and second sets of characteristics beina, different. A method for treating, diesel engine exhaust is also disclosed. 1. A method of treating exhaust gases from a diesel engine , comprising:operating the engine and passing exhaust gases through a diesel particulate filter (DPF);operating the engine to obtain a first set of exhaust characteristics and injecting fuel upstream of the DPF at a first rate of injection until at least one condition is attained; andafter the at least one condition is attained, reducing a rate of fuel injection and operating the engine to obtain a second set of exhaust characteristics so that regeneration of the DPF occurs, at least one characteristic of the first and second sets of characteristics being different.2. The method as set forth in claim 1 , wherein the first set of exhaust characteristics includes a higher exhaust mass flow rate than the second set of exhaust characteristics.32. The method as set forth in any of - claims 1 , wherein the second set of exhaust characteristics includes higher NOx than the first set of exhaust characteristics.43. The method as set forth in any of - claims 1 , wherein the at least one condition includes heating of the DPF to a temperature above a predetermined heating temperature.54. The method as set forth in any of - claims 1 , wherein the at least one condition includes an amount of hydrocarbon slip through a diesel ...

EXHAUST GAS EMISSION CONTROL SYSTEM FOR DIESEL ENGINE

An exhaust gas emission control system for a diesel engine, having an oxidation catalyst (DOC) () and a diesel particulate filter (DPF) () in an exhaust passage, wherein a late post-injection control unit (), which injects fuel into a combustion chamber at a timing not contributing to combustion in DPF regeneration control, feedback controls a late post-injection amount such that a regeneration amount of soot regenerated by the DPF () becomes a target soot regeneration amount. 1. An exhaust gas emission control system for a diesel engine as an internal combustion engine , comprising , in an exhaust passage , an oxidation catalyst (DOC) and a diesel particulate filter (DPF) for collecting soot in exhaust gas so that the soot collected by the DPF is regenerated , the exhaust gas emission control system further comprising:a regeneration control device which controls a heating unit, when an amount of accumulated soot exceeds a predetermined value, to heat the DPF up to near a predetermined target temperature so as to burn and remove the accumulated soot,wherein the regeneration control device has a late post-injection control unit which injects fuel into a combustion chamber at a timing not contributing to combustion, andthe late post-injection control unit feed-back controls a late post-injection amount such that a regeneration amount of the soot regenerated by the DPF becomes a target soot regeneration amount.2. The exhaust gas emission control system for a diesel engine according to claim 1 , wherein the late post-injection control unit controls based on the target soot regeneration amount set to a fixed value.3. The exhaust gas emission control system for a diesel engine according to claim 1 , wherein the late post-injection control unit varies the target soot regeneration amount according to a regeneration elapsed time after the start of late post-injection claim 1 , such that the target soot regeneration amount is set to a small value directly after the start of ...

Engine and aftertreatment optimization system

An approach and system for engine and aftertreatment system optimization. Emissions of an engine may be reduced by an aftertreatment mechanism. Control of the engine and the aftertreatment mechanism may be coordinated for the best overall efficiency relative to both fuel consumption and the emissions reduction. Engine and aftertreatment control may also be optimized in terms of cost function minimization. Individual efficiencies of the engine and aftertreatment mechanism are not necessarily significant by themselves. Therefore, the engine and aftertreatment mechanism should be controlled in a manner to achieve the optimality of the engine and the aftertreatment mechanism together as one entity.

METHOD AND DEVICE PERTAINING TO COOLING OF DOSING UNITS OF HC DOSING SYSTEMS FOR EXHAUST CLEANING

A method for cooling a dosing unit pertaining to an HC dosing system for exhaust cleaning. The unit includes a dosing unit () for fuel and a feed device () for fuel for cooling the fuel dosing unit () using fuel supplied to it, and running the feed device () to supply coolant fuel at reduced power. Also a computer program product containing program code (P) for implementing the method. Also an HC dosing system and a motor vehicle equipped with the system. 1. A method for cooling a dosing unit pertaining to an HC dosing system for exhaust cleaning of an engine which produces exhaust during operation , the engine comprising a dosing unit for fuel and a feed device for feeding coolant fuel to said dosing unit;the method comprising the steps of:cooling said fuel dosing unit by supplying engine operating fuel as a coolant to said dosing unit; andrunning said feed device to supply said coolant fuel at reduced power of said feed device compared with ordinary operation of said feed device at ordinary power.2. A method according to claim 1 , further comprising the step of:running said feed device at least a possible power and with substantially unchanged cooling power of said dosing unit, for as long as cooling continues.3. A method according to claim 2 , running said feed device at a power corresponding to 10-30% of said power at which said feed device is run during ordinary operation.4. A method according to claim 1 , further comprising the step of:said running of said feed device is for a predetermined period of time.5. A method according to claim 1 , further comprising the step of:measuring temperature of at least one portion of said HC dosing system, and running said feed device on the basis of said measured temperature.6. A method according to claim 1 , wherein said running of said feed device entails catering for rewarming effects.7. A method according to claim 1 , further comprising the step of:continuously running said feed device at reduced power compared with said ...

METHOD PERTAINING TO AIR REMOVAL FROM A HC DOSING SYSTEM AND A HC DOSING SYSTEM

A method pertaining to an HC dosing system wherein fuel from a container () is supplied to a feed device which supplies to at least one consumption point (). Determining presence of air supplied upstream of the feed device (). When such presence is found reducing an operating power of the feed device () compared with its ordinary operation. A computer programme product containing programme code (P) for a computer () for implementing the method. Also an HC dosing system and a motor vehicle () which is equipped with the HC dosing system are disclosed. 1. A method pertaining to an HC dosing system comprising:supplying fuel from a container to a feed device and then via the feed device, supplying said fuel to at least one consumption point;determining presence of air supplied upstream in a path of said fuel to said feed device, and when said presence of air is determined, reducing an operating power of said feed device compared with ordinary operation of said feed device.2. A method according to claim 1 , further comprising:determining said presence of air based on at least one of detecting operating power of a power source which is configured to power said feed device, detecting delivery pressure of said feed device, and after a determined period during which a deviant operation of said feed device occurs during said presence of air.3. A method according to claim 1 , further comprising the step ofmaintaining said reduced operating power of said feed device until said presence of air is brought down to a selected level.4. A method according to claim 3 , wherein said selected level of air caters for at least one of a detected operating power of a power source which is configured to powering said feed device claim 3 , a detected delivery pressure of said feed device claim 3 , and a determined period during which running of said feed device is at reduced operating power compared with ordinary operating power of said feed device.5. A method according to claim 1 , wherein ...

METHOD PERTAINING TO HC DOSING SYSTEMS AND DEVICE OF HC DOSING SYSTEMS

A method pertaining to an HC dosing system for cleaning exhaust gases from an engine (). A dosing unit supplies fuel to an exhaust duct (): Determining (s) whether there is an undesired temperature level of the dosing unit. If that is found, removing (s) warmed fuel from the dosing unit () by supplying it to the vehicle's exhaust duct (), entailing calculating (s) and removing an amount of fuel based on a prevailing temperature of the dosing unit (), or removing (s) a predetermined amount in the form of substantially all of the warmed fuel of the dosing unit and transmitting it to the exhaust duct. Also computer programme product containing programme code (P) for a computer () for implementing the method. Also to a device and a motor vehicle () which is equipped with the device are disclosed. 1. A method pertaining to an HC dosing system of an engine having an exhaust duct and the engine generates exhaust gases to the exhaust duct when the engine is operating , the system being configured and operable for cleaning of exhaust gases from an engine;the system comprises a dosing unit to supply a fuel to said exhaust duct;the method comprising:determining whether there is an undesired temperature level of said dosing unit;if said undesired temperature level is found, removing warmed fuel from said dosing unit by supplying said removed fuel to said exhaust duct; andcalculating and removing an amount of said fuel based on a prevailing temperature of said dosing unit or removing a predetermined amount comprised of substantially all of said warmed fuel of said dosing unit and transferring said removed fuel from said dosing unit to said exhaust duct.2. A method according to claim 1 , wherein the engine ceases generating exhaust flow; andsaid determination of whether there is said undesired temperature level is done after said cessation of an exhaust flow.3. A method according to claim 1 , further comprising continuously cooling said dosing unit by flow of said fuel to said ...

Methods and Systems for Emission System Control

Methods and systems are provided for operating an engine including an emission control system, the emission control system comprising a catalyst downstream of a turbine of a boosting device and a reductant injector upstream of the turbine. In one example, the method comprises injecting reductant into exhaust upstream of the turbine, mixing the injected reductant with exhaust gas via the turbine, and delivering the mixed reductant to the catalyst. 116-. (canceled)17. A method for an engine , comprising:filtering particulates from exhaust via a particulate filter arranged in an exhaust passage;injecting reductant via an injector into the exhaust passage downstream of the particulate filter, upstream of a turbocharger turbine, and downstream high-pressure EGR;controlling an amount of mixing of the injected reductant with exhaust at the turbine via adjustment of a turbine wastegate; anddelivering the mixed reductant to a catalyst downstream of the turbine.18. The method of claim 17 , wherein injecting reductant comprises injecting urea.19. The method of claim 18 , wherein delivering the mixed reductant comprises delivering the mixed reductant to an SCR catalyst.20. The method of claim 17 , wherein the wastegate adjustment includes reducing wastegate opening to increase reductant mixing.21. The method of claim 20 , further comprising adjusting reductant injection based on a change in boost.22. The method of claim 21 , wherein the injection adjustment includes temporarily decreasing an amount of injection when boost is decreased.23. An engine method claim 21 , comprising:injecting reductant into engine exhaust upstream of a turbine, downstream of a particulate filter in an exhaust passage, and upstream of low-pressure EGR, the injection adjusted based on a boost operating condition;controlling an amount of mixing of the injected reductant with exhaust at the turbine via adjustment of a turbine wastegate; anddelivering the mixed reductant to an SCR catalyst in the exhaust ...

Arrangement of a Catalytic Converter in an Exhaust System

An arrangement of a catalytic converter in an exhaust system of an internal combustion engine which can be operated with fuel containing manganese is provided, wherein the catalytic converter is arranged in the exhaust tract in an exhaust gas flow path from the internal combustion engine. A sacrificial disk, which is permeable to exhaust gas, is arranged in the exhaust tract upstream of the catalytic converter in the flow direction of the exhaust gas. When the exhaust gas back pressure becomes too high for normal internal combustion engine operation owing to manganese deposits, the relatively inexpensive sacrificial disk can be replaced other than exchanging and/or cleaning the relatively expensive catalytic converter.

METHOD PERTAINING TO AIR REMOVAL FROM A HC DOSING SYSTEM AND A HC DOSING SYSTEM

A method pertaining to an HC dosing system in which fuel in liquid form is supplied to a feed device () via which fuel is supplied from a container () to at least one consumption point () continuously detecting the feed pressure (P) which the feed device () furnishes. Also, the step of controlling the operation of the feed device () on the basis of changes (P′) in the feed pressure (P), to reduce the impact of unwanted air supply at the feed device (). Also a computer programme product containing programme code (P) for a computer () for implementing the method. Also an HC dosing system and a motor vehicle () which is equipped with the HC dosing system are disclosed. 1. A method pertaining to an HC dosing system wherein the system includes a feed device which supplies fuel in liquid form from a container to at least one consumption point , the method comprising:continuously detecting a feed pressure furnished by said feed device; andcontrolling said operation of said feed device based on changes in said feed pressure, with the object of reducing impact of unwanted air supply at said feed device.2. A method according to claim 1 , further comprising altering the operation of the said feed device in correlation with the changes in said feed pressure.3. A method according to claim 1 , wherein the controlling of the operation of said feed device is by a pump speed of said feed device.4. A method according to claim 1 , wherein control of the operation of said feed device is towards a predetermined level of the feed pressure which said feed device is intended to furnish.5. A method according to claim 1 , wherein control of the operation of said feed device is based on a time derivative of said detected feed pressure.6. A method according to claim 1 , further comprising determining presence of air supplied upstream of said feed device claim 1 , and when such presence of air is found claim 1 , controlling operation of said feed device based on changes in said feed pressure.7. ...

HEATING APPARATUS FOR INTERNAL COMBUSTION ENGINE EXHAUST AFTERTREATMENT

A heating apparatus for engine exhaust includes a housing having an inlet for connection in an exhaust gas conduit to receive exhaust gas and an outlet for connection in an exhaust gas conduit to discharge exhaust gas, the housing defining an interior space, a burner unit mounted in the housing for combustion of a fuel in the interior space, and, a turbocompressor, including a turbine having an inlet to receive exhaust gas to drive the turbine and an outlet connected to the housing to discharge exhaust gas and a compressor driven by the turbine and having an inlet to receive ambient air and an outlet connect to deliver compressed air to the burner. The turbocompressor may be mounted on the housing upstream of the burner unit. 1. A heating apparatus for an engine exhaust , comprising:a housing having an inlet for connection in an exhaust gas conduit to receive exhaust gas and an outlet for connection in an exhaust gas conduit to discharge exhaust gas, the housing defining an interior space;a burner unit mounted in the housing for combustion of a fuel in the interior space; and,a turbo-compressor, including a turbine having an inlet to receive exhaust gas to drive the turbine and an outlet connected to the housing to discharge exhaust gas and a compressor driven by the turbine and having an inlet to receive ambient air and an outlet connect to deliver compressed air to the burner.2. The heating apparatus of claim 1 , wherein the burner unit comprises a combustion chamber disposed in the interior space claim 1 , including a wall enclosing a combustion space claim 1 , the wall being spaced from the housing to provide an exhaust flow space surrounding the combustion chamber.3. The heating apparatus of claim 2 , wherein the housing wall is insulated.4. The heating apparatus of claim 2 , wherein the housing inlet communicates with the exhaust flow space to direct exhaust gas into the exhaust flow space.5. The heating apparatus of claim 2 , wherein the combustion chamber ...

BURNER WITH STEADY ATOMIZATION AT LOW BACK PRESSURE

An apparatus for fuel preparation () for a burner () for regenerating a particle filter () of an exhaust gas aftertreatment system comprising an exhaust gas passage () for discharging a hot exhaust gas flow from an internal combustion engine (), in particular a compression-ignition internal combustion engine, is proposed. The apparatus for fuel preparation () has an atomizing device () for preparing the fuel, a combustion chamber (), an ignition device () and a combustion air supply (). The combustion air supply () provides a primary air feed line () for preparing the fuel and a secondary air feed line () for feeding combustion air in order to produce an ignitable fuel/air mixture. 110018161412100110116242624112114. An apparatus for fuel preparation () for a burner () for regenerating a particle filter () of an exhaust gas aftertreatment system comprising an exhaust gas passage () for discharging a hot exhaust gas flow from an internal combustion engine () , wherein the apparatus for fuel preparation () comprises an atomizing device () for preparing the fuel , a combustion chamber () , a combustion air supply () and an ignition device () , characterized in that the combustion air supply () provides a primary air feed line () for preparing the fuel and a secondary air feed line () for feeding combustion air in order to produce an ignitable fuel/air mixture.2100118112114. The apparatus for fuel preparation () according to claim 1 , characterized in that a pressure regulating valve () is disposed in at least one of the primary and secondary air feed lines ( claim 1 , ).3100118. The apparatus for fuel preparation () according to claim 2 , characterized in that the pressure regulating valve () is a mechanical pressure regulating valve.4100118. The apparatus for fuel preparation () according to claim 2 , characterized in that the pressure regulating valve () is a control valve.510024112114118. The apparatus for fuel preparation () according to claim 2 , characterized in ...

Work Machine

A work machine, comprising: 1. A work machine , comprising:a diesel engine;a gas emission cleaning device having a filter for trapping particulate matter included in gas emissions emitted from the diesel engine; anda filter regenerating device for performing automatic regeneration to automatically combust and eliminate particulate manner that has accumulated in the gas emission cleaning device, when the accumulated amount of the particulate matter has exceeded a predetermined value;wherein the filter regenerating device has an automatic-regeneration-allowing device for allowing the automatic regeneration to be carried out by an external command; and, at startup, the automatic-regeneration-allowing device disallows carrying out automatic regeneration.2. The work machine of claim 1 , whereinthe work machine has an automatic-regeneration-allowing switch for outputting a command allowing the automatic regeneration to be carried out;when the accumulated amount of particulate matter has exceeded the predetermined value, the filter regenerating device outputs an alert signal showing the necessity of carrying out the automatic regeneration; andduring the interval that the filter regenerating device is outputting the alert signal, the automatic-regeneration-allowing device allows the automatic regeneration to be preformed on the filter regenerating device provided that a command allowing the automatic regeneration to be carried out is received from the automatic-regeneration-allowing switch.3. The work machine of claim 2 , whereinthe automatic-regeneration-allowing switch outputs a command for allowing automatic regeneration to be carried out, and outputs a command for disallowing the allowed automatic regeneration from being carried out.4. The work machine of claim 3 , whereinthe filter regenerating device outputs the alert signal to the automatic-regeneration-allowing switch; and, based on the outputted alert signal, the automatic-regeneration-allowing switch issues an ...

Particulate trap regeneration

A particulate trap is regenerated with a valving mechanism downstream of the trap for periodically creating a reverse pressure of about 15 to 60 psig throughout the entire trap, a reversing apparatus operative after the reverse pressure is created for starting a regeneration cycle by creating a substantially instantaneous reverse pressure drop across the porous walls of the trap to dislodge accumulated particulate cake and by causing the filtered exhaust gas to flow back through the porous walls to remove the dislodged particulate from the trap, and controls for starting and stopping a regeneration cycle.

BETA-SPODUMENE-CORDIERITE COMPOSITION, ARTICLE, AND METHOD

Porous spodumene-cordierite honeycomb bodies of high strength but low volumetric density, useful for the manufacture of close-coupled engine exhaust converters, gasoline engine particulate exhaust filters, and NOx integrated engine exhaust filters, are provided through the reactive sintering of batches comprising sources of magnesia, alumina and silica together with a lithia source, such as a spodumene or petalite ore. 1. A method for making a porous ceramic article comprising the steps of:mixing inorganic batch ingredients with a liquid and an organic binder to form a plasticized batch mixture, the inorganic batch ingredients comprising sources of magnesia, silica, alumina and lithia, wherein the lithia source comprises one or more lithium-containing compounds, wherein the magnesia source comprises one or more magnesium-containing compounds, and wherein the magnesia source constitutes less than 25 wt % of the inorganic batch ingredients;forming the plasticized batch mixture into a green body; andheating the green body to a top temperature of 1180 to 1260° C. for a time sufficient to convert the green body into the porous ceramic article, the article being comprised of a principal phase of beta-spodumene and a minor phase of cordierite.2. The method of wherein the beta-spodumene and cordierite phases together constitute more than 80% of the porous ceramic article.3. The method of wherein the porous ceramic article contains less than 4 wt % glass.4. The method of wherein the lithia source is selected from the group consisting of spodumene claim 1 , petalite claim 1 , and combinations thereof.5. The method of wherein the magnesia source is selected from the group consisting of MgO claim 1 , magnesium hydroxide claim 1 , talc claim 1 , and combinations thereof.6. The method of wherein the plasticized batch mixture further comprises a pore forming agent.7. The method of wherein the inorganic batch ingredients comprise α-spodumene in an amount of at least 40 wt % with ...

Toroidal Combustion Chamber With Side Injection

In systems in which there is insufficient pressure difference between the intake and the exhaust to drive the EGR, an EGR pump is provided. In a dual-engine system, disclosed herein, the EGR system, i.e., the EGR cooler and EGR pump, is shared to obviate the need for two of each. Shutoff valves may be provided between the EGR system and a secondary of the two engines to isolate the secondary engine when it is not operating. When the engines are OPOC engines, exhaust aftertreatment devices, such as diesel oxidation catalysts and/or diesel particulate filters, may be placed upstream of where the EGR gases tee off from the engine's exhaust to thereby maintain a high pressure ratio across an exhaust turbine located downstream in the engine's exhaust. 1. An internal combustion engine system , comprising:a first internal combustion engine;a second internal combustion engine;a first diesel particulate filter (DPF) disposed in an engine exhaust downstream of the first engine;a second DPF disposed in an engine exhaust downstream of the second engine;a first tee disposed downstream of the first DPF, the first tee having a first EGR leg and a first exhaust leg;a second tee disposed downstream of the second DPF, the second tee having a second EGR leg and a second exhaust leg;an EGR system fluidly coupled with the first EGR leg and with the second EGR leg, the EGR system comprising: an EGR cooler and an EGR pump;a first turbocharger having a turbine disposed in the first exhaust leg; anda second turbocharger having a turbine disposed in the second exhaust leg.2. The system of claim 1 , further comprising: first and second outlet ducts from the EGR system wherein the first outlet duct is fluidly coupled to an engine intake of the first engine and the second outlet duct is fluidly coupled to an engine intake of the second engine.3. The system of wherein:the first turbocharger further includes a compressor disposed in the engine intake of the first engine and the compressor is ...

METHOD AND SYSTEM FOR DIESEL PARTICLE FILTER REGENERATION

A method for regeneration of a particle filter () pertaining to a combustion process, which filter treats exhaust gases arising from combustion in a combustion engine (): During regeneration, controlling the engine () according to a first mode and a second mode, in the first mode, the engine () is controlled such that a high exhaust temperature is generated, determining a temperature of the particle filter (), and controlling the engine () according to the first mode when the temperature determined is below a first value until the temperature reaches a higher second value, and then controlling the engine in the second mode. The invention relates also to a system and a vehicle (). 1202101. A method for regeneration of a particle filter () pertaining to a combustion process , which filter is arranged to treat exhaust gases arising from combustion in a combustion engine () , which method comprises:{'b': 101', '101, 'during said regeneration, controlling said engine () according to a first mode and a second mode, in which first mode the engine () is controlled in such a way that a high exhaust temperature is generated, which method further comprises{'b': '202', 'determining a temperature for said particle filter (), and'}{'b': '101', 'controlling said engine () according to said first mode when said temperature determined is below a first value.'}2101. A method according to claim 1 , whereby in said second mode the engine () is controlled in such a way that a substantially larger amount of nitrogen oxides is delivered than in said first mode.3101101. A method according to or claim 1 , whereby said engine () is controlled according to said first mode until said temperature determined reaches a second value which is higher than said first value claim 1 , whereupon control of said engine () changes to said second mode.4. A method according to claim 3 , whereby said second value is a suitable temperature exceeding 250° C.5. A method according to any one of the foregoing ...

METHOD AND APPARATUS FOR DECREASING FUEL COMSUMPTION DURING PARTICULATE FILTER GENERATION

A diesel particulate filter system comprising: a temperature sensor on the inlet side of the diesel particulate filter; a temperature sensor on the outlet side of the diesel particulate filter; a pressure sensor on the inlet side of the diesel particulate filter; and a control module in communication with the temperature sensors and the pressure sensor, and the control module is loaded with a look-up table that correlates the amount of soot loaded in the diesel particulate filter to a change in pressure measured by the pressure sensor; wherein the control module Initiates a regeneration cycle when soot loading of the diesel particulate filter achieves a predetermined soot load. 1. A diesel particulate filter system comprising:a) a diesel particulate filter having a hysteresis of about ±2.0 g/L or less;b) a pressure sensor on the inlet side of the diesel particulate filter;c) a control module in communication with the pressure sensor, wherein the control module is loaded with at least one look-up table; andd) one of the at least one look-up table is a pressure drop look-up table that takes into account the variation in soot load of the diesel particulate filter and correlates the amount of soot loaded in the diesel particulate filter to a change in pressure measured by the pressure sensor;wherein the control module initiates a regeneration cycle when soot loading of the diesel particulate filter achieves a pre-determined soot load.2. The diesel particulate filter system of claim 1 , wherein the soot load in the diesel particulate filter is calculated by using the pressure drop look-up table and the pressure drop measured by the pressure sensor.3. The diesel particulate filter system of claim 1 , wherein the diesel particulate filter is made of any material that has a substantially linear data plot that correlates pressure drop to soot load and has a low pressure drop hysteresis.4. The diesel particulate filter system of claim 1 , further including a temperature ...

SYSTEM AND METHOD OF CONTROLLING MAXIMUM HYDROCARBON INJECTION FOR DIESEL PARTICULATE FILTER REGENERATION

A method of providing hydrocarbons to an engine exhaust for regenerating a diesel particulate filter within an exhaust system of a diesel engine. A mass flow rate of exhaust gas within an exhaust system is determined. A mass flow rate of oxygen within the exhaust gas entering the diesel oxidation catalyst is determined. A set point indicative of an allowable mass flow rate of oxygen within the exhaust gas exiting the diesel oxidation catalyst is received. A hydrocarbon threshold that may be injected into the exhaust system is calculated. Hydrocarbons are injected into the exhaust system upstream of the diesel oxidation catalyst, wherein the injected hydrocarbons do not exceed the calculated threshold amount of hydrocarbons. 1. A method of providing hydrocarbons to an engine exhaust for regenerating a diesel particulate filter within an exhaust system of a diesel engine , the diesel engine comprising an electronic control module , at least one cylinder , and at least one fuel injector in fluid communication with the at least one cylinder , and a diesel oxidation catalyst within the exhaust system , the method comprising:determining a mass flow rate of exhaust gas within an exhaust system;determining a mass flow rate of oxygen within the exhaust gas entering the diesel oxidation catalyst;receiving a set point indicative of an allowable mass flow rate of oxygen within the exhaust gas exiting the diesel oxidation catalyst;calculating a hydrocarbon threshold that may be injected into the exhaust system based upon the mass flow rate of exhaust gas within the exhaust system, the mass flow rate of oxygen within the exhaust gas entering the diesel oxidation catalyst, and the minimum mass flow rate of oxygen within the exhaust gas exiting the diesel oxidation catalyst;injecting hydrocarbons into the exhaust system upstream of the diesel oxidation catalyst, wherein the injected hydrocarbons do not exceed the calculated threshold amount of hydrocarbons.2. The method of claim 1 ...

METHOD FOR WARMING AFTER-TREATMENT BURNER SYSTEM

Disclosed is a method for warming an after-treatment system in which a burner is arranged upstream of a particulate filter (exhaust purifying member) incorporated in an exhaust pipe and the particulate filter is adapted to be heated by combustion with the burner On condition that an ambient temperature surrounding the burner is below a predetermined temperature, the energization is conducted to an electromagnetic valve-type injector serving for fuel spray of the burner with the fuel supply being stopped. The energization brings about Joule heat generated in an electromagnetic coil inside the injector to make the warming. 1. A method for warming an after-treatment burner system wherein a burner is arranged upstream of an exhaust purifying member incorporated in an exhaust pipe , said exhaust purifying member being adapted to be heated by combustion with said burner , comprising energizing an electromagnetic valve-type injector , which serves for fuel spray in said burner , on condition that an ambient temperature surrounding the burner is below a predetermined temperature and with the fuel supply to said injector being stopped , whereby Joule heat by the energization is generated in an electromagnetic coil inside the injector to make the warming.2. The method for warming the after-treatment burner system as claimed in claim 1 , wherein energization time to the injector is varied depending on the ambient temperature surrounding the burner. The present invention relates to a method for warming an after-treatment burner system.In a conventional diesel engine, a particulate filter is incorporated in an exhaust pipe for flow of an exhaust gas to capture particulates (particulate matters) in the exhaust gas. However, the exhaust gas from the diesel engine in a normal operation status rarely has a chance to reach a temperature level at which the particulates burns by themselves. Consequently, an oxidation catalyst having active species such as Pt and Pd is integrally ...

SYSTEM AND METHOD FOR REGENERATING THE PARTICULATE FILTER IN A DIESEL ENGINE

In a diesel engine equipped with a system for automatic regeneration of a particulate filter, an automatic regeneration mode is inhibited in the case where there is recorded a number higher than a pre-set threshold of unfavorable event. When the automatic regeneration mode is inhibited, an on-demand regeneration mode is simultaneously enabled, which can be activated manually by the driver. If an on-demand regeneration is not performed before the vehicle has covered a certain mileage since the automatic regeneration mode was inhibited, the vehicle is set in a condition of limited performance. 1. A diesel engine , comprising:a particulate filter set in an exhaust line of the engine, and an electronic control unit for controlling the fuel injectors associated to the cylinders of the engine, which is programmed for activating—when an amount of particulate accumulated in said filter higher than a threshold value is detected or estimated—a modality of control of the injectors that determines automatic regeneration of the filter by an increase in a temperature of the exhaust gases sent to the filter sufficient for burning the particulate in the filter, exceeding of a pre-set threshold value of a number of unfavorable events; and', 'detection of a value lower than a pre-set threshold of a parameter identifying the quality of engine lubricating oil, and, 'the electronic control unit programmed for activating an alarm condition and inhibiting the automatic regeneration mode and enabling simultaneously an on-demand regeneration mode activatable manually by the driver when said electronic control unit detects the presence of at least one of the following two conditionssaid engine provided with manual control means for activation of the on-demand regeneration mode.2. The engine according to claim 1 , wherein said electronic control unit is programmed in such a way that claim 1 , in the case of detection of a number of unfavorable events higher than the threshold value claim 1 , ...

CONTROL DEVICE OF DIESEL ENGINE

A control device of a diesel engine is provided. The device includes an engine body having a cylinder, a fuel injection valve for injecting fuel into the cylinder, a valve timing control module for changing opening and closing timings of at least an intake valve or an exhaust valve, an oxidation catalyst arranged within an exhaust passage for purifying HC discharged from the cylinder, and a DPF arranged downstream of the oxidation catalyst for capturing soot within exhaust gas. The device also includes a DPF regenerating module for supplying, when a predetermined DPF regeneration condition is satisfied, HC to the oxidation catalyst to regenerate the DPF by heat generated from an oxidation reaction of HC, and a fuel cutting module for stopping, when the diesel engine is in a deceleration state, a main injection of the fuel that is performed on a compression stroke of the cylinder. 1. A control device of a diesel engine including an engine body having a cylinder to which fuel containing diesel fuel as its main component is supplied , a fuel injection valve for injecting the fuel into the cylinder , a valve timing control module for changing opening and closing timings of at least one of an intake valve and an exhaust valve provided to the cylinder , an oxidation catalyst arranged within an exhaust passage connected with the engine body , and for purifying HC discharged from the cylinder , and a DPF arranged downstream of the oxidation catalyst and for capturing soot contained within exhaust gas , the device comprising:a DPF regenerating module for supplying, when a predetermined DPF regeneration condition is satisfied, HC to the oxidation catalyst to regenerate the DPF by heat generated from an oxidation reaction of HC; anda fuel cutting module for stopping, when the diesel engine is in a deceleration state, a main injection of the fuel that is performed on a compression stroke of the cylinder,wherein in a regeneration-in-deceleration state in which the diesel engine ...

CONTROL DEVICE OF DIESEL ENGINE WITH TURBOCHARGER

A control device of a diesel engine with a turbocharger is provided. The device includes an engine body having a cylinder, a fuel injection valve, a turbine of the turbocharger, a bypass passage for bypassing the turbine, a bypass valve for opening and closing the bypass passage, an oxidation catalyst for purifying HC, and a DPF for capturing soot. The device includes a fuel cutting module for stopping, when the diesel engine is in a deceleration state, a main injection of the fuel performed on compression stroke, a DPF regenerating module for performing, when a predetermined DPF regeneration condition is satisfied, a post injection on expansion stroke to supply HC to the oxidation catalyst and regenerate the DPF by heat generated from an oxidation reaction of HC, and a bypass valve control module for controlling the bypass valve. 1. A control device of a diesel engine with a turbocharger including an engine body having a cylinder to which fuel containing diesel fuel as its main component is supplied , a fuel injection valve for injecting the fuel into the cylinder , a turbine of the turbocharger provided within an exhaust passage through which exhaust gas is discharged from the cylinder , a bypass passage for bypassing the turbine , a bypass valve for opening and closing the bypass passage , an oxidation catalyst arranged within the exhaust passage downstream of the turbine and the bypass passage , and for purifying HC contained within the exhaust gas , and a DPF arranged within the exhaust passage downstream of the oxidation catalyst and for capturing soot contained within the exhaust gas , the device comprising:a fuel cutting module for stopping, when the diesel engine is in a deceleration state, a main injection of the fuel that is performed on compression stroke of the cylinder;a DPF regenerating module for performing, when a predetermined DPF regeneration condition is satisfied, a post injection on expansion stroke of the cylinder to supply HC to the oxidation ...

Exhaust system and method for controlling an exhaust system

In one exemplary embodiment of the invention, a method for controlling an exhaust system includes determining an air to fuel ratio within a combustion chamber of an internal combustion engine, measuring a temperature of an exhaust gas flow from the internal combustion engine into the exhaust system and determining a specific heat for the exhaust gas flow in a first segment of the exhaust system based on the temperature of the exhaust gas flow from the internal combustion engine and the air to fuel ratio, wherein the first segment is upstream of the particulate filter. The method also includes determining a first temperature of the exhaust gas in the first segment based on the specific heat for the exhaust gas flow and selectively controlling a regeneration process for the particulate filter using the determined temperature of the exhaust gas at the selected location.

Method and device pertaining to cooling of dosing units of hc dosing systems for exhaust cleaning

A method pertaining to an HC dosing system for exhaust cleaning for an engine which comprise a dosing unit ( 250 ) for fuel. After cessation of an exhaust flow, deciding about a need to cool the fuel dosing unit by use of fuel. Predicting a temperature pattern of the dosing unit ( 250 ) as a basis for deciding. Predicting whether a predetermined temperature of the dosing unit ( 250 ) will be reached after exhaust flow cessation. Also a computer programme product containing programme code (P) for implementing the method. Also an HC dosing system and a motor vehicle which is equipped with the HC dosing system are disclosed.

Filter mechanism for internal combustion engines

A filter device () for an internal combustion engine includes a separator that is embodied as a cyclone preseparator (), a main filter element () exchangeably arranged in a housing compartment () of the filter housing (), and a secondary filter element ( The housing compartment () includes insertion stays (). The main filter element () is embodied in as a double bellows filter including a first radially inwardly positioned filter bellows () and a second radially outwardly positioned filter bellows () surrounding it. Upon closing of a servicing housing cover () a sealing force is generated that acts onto the main filter element () and is maintained in the closed state of the servicing cover (). 136681236. An exchangeable filter element () for installation into a housing compartment () of a filter housing () , the filter element () comprising:{'b': '36', 'an inflow face at an axial end of said filter element ();'}{'b': '36', 'an outflow face an opposing axial end of said filter element (),'}{'b': 40', '40', '44, 'a first filter bellows () extending between said inflow and outflow faces, said first filter bellows () having an interior () forming a first flow space open at one of said flow faces and closed off an opposing one of said flow faces;'}{'b': 42', '40', '42', '40, 'a second filter bellows () arranged radially outwardly of said first filter bellows (), said second filter bellows () radially enclosing said first filter bellows (), said second filter bellows extending between said inflow and outflow faces;'}{'b': 40', '42, 'wherein said first filter bellows () and said second filter bellows () are connected forming a one-piece exchangeable filter element;'}{'b': 40', '42', '36, 'wherein said first () and said second filter bellows () are substantially flowed through in radial direction within said exchangeable filter element ();'}{'b': 40', '42, 'wherein a second flow space is arranged between a radially outer side of said first filter bellows () and a radially ...

FILTER FAILURE DETECTION APPARATUS OF AN INTERNAL COMBUSTION ENGINE

A failure of a filter is detected with a higher degree of accuracy. There are provided a filter that is arranged on an exhaust passage of an internal combustion engine for collecting a substance contained in an exhaust gas, a substance amount detection part that is arranged on the exhaust passage at a downstream side of the filter for detecting an amount of substance in the exhaust gas, a flow speed detection part that detects or estimates a flow speed of the exhaust gas which passes through the filter, and a determination part that makes a determination that the filter is in a failure, when the higher the flow speed of the exhaust gas passing through the filter, the larger a ratio of an amount of change in the amount of substance to an amount of change in the flow speed of the exhaust gas becomes. 1. A filter failure detection apparatus of an internal combustion engine comprising:a filter that is arranged on an exhaust passage of the internal combustion engine for collecting a substance contained in an exhaust gas;a substance amount detection part that is arranged on the exhaust passage at a downstream side of said filter for detecting an amount of said substance which passes through said filter;a flow speed detection part that detects or estimates a flow speed of the exhaust gas which passes through said filter; anda determination part that makes a determination that said filter is in a failure, when the higher the flow speed of the exhaust gas passing through said filter, the larger a ratio of an amount of change in the amount of substance detected by said substance amount detection part to an amount of change in the flow speed of the exhaust gas detected or estimated by said flow speed detection part becomes.2. The filter failure detection apparatus of an internal combustion engine as set forth in claim 1 , whereinsaid determination part makes a determination that said filter is in a failure, when the flow speed of the exhaust gas detected or estimated by said ...

REDUCTION OF FOULING IN AFTER TREATMENT COMPONENTS

A device and method for influencing exhaust gas flow downstream of a turbocharger turbine and upstream of after treatment components prevents doser tip fouling by using a passive exhaust flow control surface comprising ridges protruding into the exhaust gas flow conduit. The ridges are disposed parallel to each other, and perpendicular to the direction of gas flow. In one embodiment, a funnel is disposed in the conduit, downstream of the ridges, to further direct the exhaust gas flow more precisely towards a HC doser tip. 1. An active regeneration arrangement for a diesel particulate filter (dpf) comprising:a conduit upstream of the dpf;a doser mounted to the conduit for injecting hydrocarbon fuel into the conduit; andat least one protrusion for influencing the flow of exhaust gas in the conduit to decrease fouling of the doser, the protrusion located upstream of the doser in an exhaust gas flow direction and extending into the conduit, the protrusion being disposed along an inner circumferential surface of the conduit such that the protrusion is in contact with the flow of exhaust gas.2. The arrangement of claim 1 , wherein the protrusion is a ridge.3. The arrangement of claim 1 , wherein the at least one protrusion comprises a plurality of protrusions that are aligned in parallel.4. The arrangement of claim 3 , wherein the protrusions of the plurality are evenly spaced apart.5. The arrangement of claim 1 , wherein the at least one protrusion comprises a plurality of protrusions that are aligned perpendicular to the net direction of gas flow along the conduit.61. The arrangement of clam claim 1 , further comprising a gas flow directing surface disposed downstream of the at least one protrusion.7. The arrangement of claim 6 , wherein the gas flow directing surface extends from a portion of an inner surface of the conduit.8. The arrangement of claim 6 , wherein the gas flow directing surface is a funnel.9. The arrangement of claim 8 , wherein the mouth of the funnel ...

Exhaust gas purification system

An exhaust gas purification system comprises an exhaust gas purification device which is arranged in an exhaust gas route of an engine, renewing devices, for burning and removing a particulate matter within the exhaust gas purification device, renewal advance notifying means which is actuated in the case that a clogged state of the exhaust gas purification device becomes equal to or more than a prescribed level, and renewal informing means which informs of a fact that the renewing devices are under operation. The renewal advance notifying means is actuated before actuating the renewing devices.

System and method for controlling an engine

A method for controlling regeneration within an after-treatment component of an engine comprises receiving an upstream temperature signal representing a temperature of an exhaust stream upstream from the after-treatment component and calculating an expected downstream temperature based on the upstream temperature signal and a model for calculating the expected downstream temperature. A temperature index is calculated based on the upstream temperature signal and the expected downstream temperature, and an estimate of accumulated particulate matter in the after-treatment component is calculated based, at least in part, on the temperature index. The estimate of accumulated particulate matter in the after-treatment component is compared to a predetermined threshold associated with the after-treatment component, and a remedial action is initiated when the estimate of accumulated particulate matter in the after-treatment component exceeds the predetermined threshold.

Working Machine

A load application means, which applies a load to an engine such that a temperature of exhaust gas is raised to a temperature required to burn particulate matter, is comprised of an electric load application means for applying the load to the engine to raise the temperature of the exhaust gas by operating an electric assist motor to generate electric power and a hydraulic load application means for applying the load to the engine to raise the temperature of the exhaust gas by increasing a delivery pressure of a variable displacement hydraulic pump, and a selection control unit is provided for performing control processing to selectively actuate the electric load application means and/or the hydraulic load application means. 1. A working machine , comprising: an engine , a variable displacement hydraulic pump drivable by the engine , an electric assist motor for assisting the engine in driving the variable displacement hydraulic pump or generating electric power , an exhaust gas purification system for trapping , by a filter , particulate matter in exhaust gas produced from the engine , an actuator control valve interposed between the variable displacement hydraulic pump and the hydraulic actuator and switchable to one of a feed state in which hydraulic oil from the variable displacement hydraulic pump is to be fed to the hydraulic actuator and a non-feed state in which the hydraulic oil is returned to a hydraulic oil reservoir without feeding the hydraulic oil to the hydraulic actuator , an electrical storage device connected to the electrical assist motor , and a load application means for applying a load to the engine such that a temperature of the exhaust gas is raised to a temperature required to burn the particulate matter , wherein:the load application means comprises an electric load application means for applying the load to the engine to raise the temperature of the exhaust gas by operating the electric assist motor to generate electric power and a ...

Failure detecting apparatus for particulate filter

An object of the present invention is to detect any breakdown or failure of a particulate filter more appropriately. A failure detecting apparatus for detecting failure of a particulate filter according to the present invention comprises an acquiring section which acquires an amount of PM contained in an exhaust gas allowed to outflow from the particulate filter; a regeneration process executing section which executes a filter regeneration process for oxidizing and removing PM deposited in the particulate filter; and a failure judging section which judges that the particulate filter is in the failure state if a decreased amount of the amount of PM contained in the exhaust gas acquired by the acquiring section, during a predetermined period of time as started from a point in time at which the execution of the filter regeneration process performed by the regeneration process executing section is completed, is not equal to or larger than a predetermined reference amount.

ENGINE CONTROL SYSTEM AND METHOD FOR INITIATING A DIESEL PARTICULATE FILTER REGENERATION

An engine command override may occur when a diesel particulate filter (DPF) requires regeneration. The need for regeneration may be indicated by regeneration level. The engine may be operated in a normal mode when the DPF regeneration level is below a regeneration level threshold, wherein the engine command is based on the throttle input. Additionally, the engine may be operated in an override mode when the DPF regeneration level is above a regeneration level threshold and the engine is operating in the idle state, wherein the engine command is based on a predetermined throttle regeneration setting. 1. A method of automatically controlling an engine to override a throttle input setting and operate at a predetermined throttle regeneration setting sufficient to initiate a regeneration event for a diesel particulate filter associated with a machine and operably coupled to the engine , the engine including a controller configured to generate an engine command setting , the method comprising:determining a DPF regeneration level indicative of a need to regenerate the diesel particulate filter;determining whether the engine is in an idle state;operating the engine in a normal mode when the DPF regeneration level is below a regeneration level threshold, wherein the engine command setting in the normal mode is based on a throttle input setting; andoperating the engine in an override mode when the DPF regeneration level is above a regeneration level threshold and the engine is operating in the idle state, wherein the engine command setting in the override mode is based on the predetermined throttle regeneration setting.2. The method of claim 1 , in which the DPF regeneration level is based on at least one DPF operating parameter associated with the diesel particulate filter claim 1 , wherein the at least one DPF operating parameter is selected from the group of DPF operating parameters including DPF soot level claim 1 , machine operating time claim 1 , and machine operating ...

HYDRAULIC DRIVE SYSTEM FOR CONSTRUCTION MACHINE HAVING EXHAUST GAS PURIFICATION DEVICE

A hydraulic drive system executing load sensing control is capable of efficiently combusting and removing filter deposits inside an exhaust gas purification device by pump output power increasing control when there is no actuator operation, eliminating interference between the actuator operation and the pump output power increasing control. A first solenoid selector valve selects between tank pressure and delivery pressure of a pilot pump. A second solenoid selector valve is arranged in a line leading the output pressure of a differential pressure reducing valve to an LS control valve for selecting between enabling and disabling of the load sensing control. When the exhaust gas purification device needs regeneration, a controller executes switching to make the first solenoid selector valve output the delivery pressure of the pilot pump as dummy load pressure and to make the second solenoid selector valve disable the load sensing control. 1. A hydraulic drive system for a construction machine , comprising:an engine;a hydraulic pump of a variable displacement type, the pump being driven by the engine;a plurality of actuators that are driven by hydraulic fluid delivered from the hydraulic pump;a plurality of flow rate/direction control valves that control flow rates of the hydraulic fluid supplied from the hydraulic pump to the actuators;a maximum load pressure detecting circuit that detects maximum load pressure of the actuators;a pump control device including a torque control unit that conducts constant absorption torque control for controlling absorption torque of the hydraulic pump not to exceed preset maximum torque by reducing displacement of the hydraulic pump with the increase in delivery pressure of the hydraulic pump, and a load sensing control unit that controls the delivery pressure of the hydraulic pump to be higher than the maximum load pressure of the actuators by target differential pressure; andan unload valve that is arranged in a line connecting the ...

EXHAUST-GAS AFTERTREATMENT SYSTEM AND METHOD FOR EXHAUST-GAS AFTERTREATMENT

An exhaust-gas aftertreatment system () for a motor vehicle having a turbocharged internal combustion engine () comprises a large-volume lean NOx trap () which is connected by means of a short connecting pipe () to an outlet of the turbocharger (), wherein the lean NOx trap () has a first region () for the storage and/or reduction of NOx and oxidation of NO to form NO2 and/or reduction of hydrocarbon and/or carbon monoxide in the exhaust gas, and a downstream second region () for the storage and/or reduction of nitrogen oxides in the exhaust gas. 1. An exhaust-gas aftertreatment system for a motor vehicle having a turbocharged internal combustion engine , comprising:a relatively large-volume lean NOx trap which is connected via a relatively small-volume connecting pipe to an outlet of the turbocharger, wherein the lean NOx trap has a first region for the storage and/or reduction of NOx and oxidation of NO to form NO2 and for the reduction of hydrocarbon and carbon monoxide in the exhaust gas, and a downstream second region for the storage and reduction of nitrogen oxides in the exhaust gas.2. The exhaust-gas aftertreatment system as claimed in claim 1 , wherein the first and the second region are arranged in one housing.3. The exhaust-gas aftertreatment system as claimed in claim 2 , wherein the first region has a higher proportion of platinum group metals than the second region.4. The exhaust-gas aftertreatment system as claimed in claim 3 , wherein a ratio between the first region and the second region is less than or equal to 0.5.5. The exhaust-gas aftertreatment system as claimed in wherein the length (l) of the connecting pipe is between 5 to 50 cm.6. The exhaust-gas aftertreatment system as claimed in claim 5 , wherein a diesel particle filter \is arranged downstream of the lean NOx trap claim 5 , wherein the diesel particle filter has a first region with a diesel oxidation catalytic converter or an exothermic catalytic converter claim 5 , and a downstream ...

HONEYCOMB STRUCTURE AND HONEYCOMB CATALYST

There is disclosed a honeycomb structure usable as a support of a honeycomb catalyst onto which a large amount of catalyst can be loaded and which has a good purification efficiency, and the honeycomb structure includes porous partition walls defining a plurality of cells to form through channels of a fluid and having a plurality of pores therein, wherein a porosity of the partition walls is from 45 to 70%, and in a cross section perpendicular to an extending direction of the cells, a total area of macro pores having the largest pore diameter of larger than 10 μm is 50% or more with respect to a total area of the pores 1. A honeycomb structure comprising porous partition walls defining a plurality of cells to form through channels of a fluid and having a plurality of pores therein ,wherein a porosity of the partition walls is from 45 to 70%, andin a cross section perpendicular to an extending direction of the cells, a total area of macro pores having the largest pore diameter of larger than 10 μm is 50% or more with respect to a total area of the pores.2. The honeycomb structure according to claim 1 ,wherein in the cross section perpendicular to the extending direction of the cells, an outer peripheral shape of the macro pores being contained in the partition walls is at least one of a circular shape and an elliptic shape.3. A honeycomb catalyst comprising the honeycomb structure according to ; and a catalyst loaded onto the surfaces of the pores being contained in the partition walls of the honeycomb structure claim 1 ,wherein in a cross section perpendicular to an extending direction of the cells, a total area of high cavity ratio pores which are the macro pores having a catalyst occupying area of 50% or less among the macro pores is from 15 to 40% with respect to a total area of the pores.4. A honeycomb catalyst comprising the honeycomb structure according to ; and a catalyst loaded onto the surfaces of the pores being contained in the partition walls of the ...

FILTER ELEMENT

A filter element including inflow passages and outflow passages and, a total cross-sectional area of all the inflow passages is larger than a total cross-sectional area of all the outflow passages, and the number of the inflow passages is larger than the number of the outflow passages, a cross section of the filter element is formed by the large number of outflow passages each having a regular hexagonal shape and the large number of inflow passages each having a modified hexagonal shape, the large number of regular hexagonal outflow passages are formed by first hexagonal passages, and second hexagonal passages each having a cross-sectional area smaller than that of each of the first hexagonal passages, an outer peripheral side of each of the first hexagonal passages and the second hexagonal passages is surrounded with six modified hexagonal inflow passages via the partition walls. 1. A filter element which filters an exhaust gas from an internal combustion engine , comprising: an inflow surface and an outflow surface; and a large number of inflow passages and a large number of outflow passages , the inflow passages and the outflow passages being partitioned by partition walls made of a porous material ,wherein a total cross-sectional area of all the inflow passages is larger than a total cross-sectional area of all the outflow passages, and the number of the inflow passages is larger than the number of the outflow passages,a cross section of the filter element is formed by the large number of outflow passages each having a regular hexagonal shape and the large number of inflow passages each having a modified hexagonal shape,the large number of regular hexagonal outflow passages are formed by first hexagonal passages, and second hexagonal passages each having a cross-sectional area smaller than that of each of the first hexagonal passages,an outer peripheral side of each of the first hexagonal passages and the second hexagonal passages is surrounded with six modified ...

Operating method for a particle filter

The systems and methods herein relate the operation of a particle filter which is arranged in an exhaust-gas path of an internal combustion engine, to a device for exhaust-gas aftertreatment which can be operated in accordance with the method that comprises determining a mass flow rate of an exhaust-gas flow flowing in the exhaust-gas path; and supplying ambient air into the exhaust-gas path as a function of the determined mass flow rate. By this method, the spontaneous regeneration of a particle filter within the exhaust system may be abated.

EXHAUST AFTERTREATMENT SYSTEM FOR INTERNAL COMBUSTION ENGINE

A mixing plenum for exhaust gas comprises a canister with an inlet and an outlet. A bulkhead is located downstream from the inlet to define an exhaust gas consolidation chamber. An opening in the bulkhead allows exhaust gas to enter a u-shape conduit configured to direct the exhaust gas from a downstream direction to an upstream direction before releasing the exhaust gas back into the plenum downstream of the bulkhead. An injector is configured to inject fluid into the exhaust gas entering the conduit. A conduit exit located a distance “E” from the downstream side of the bulkhead allows the exhaust gas/fluid mixture to exit the conduit into a larger exit volume of the compact mixing can, in the manner of an expansion chamber, where its velocity slows and further mixing of the fluid/exhaust gas occurs and exits the compact mixing can through the outlet flange. 1. An exhaust gas treatment system having a compact mixing plenum configured to receive an exhaust gas/fluid mixture comprising:a canister having an upstream inlet;a bulkhead disposed within said canister at a distance downstream of said upstream inlet to thereby define an exhaust gas consolidation chamber therebetween;an exhaust gas opening, disposed in said bulkhead, through which exhaust gas passing through said exhaust gas consolidation chamber enters a high pressure, high velocity mixing conduit, said mixing conduit comprising:a substantially U-shaped conduit configured to direct the fluid/exhaust gas mixture from a downstream to an upstream direction within the compact mixing plenum for through mixing of said fluid/exhaust gas mixture; anda high pressure, high velocity mixing conduit exit located adjacent a downstream side of the bulkhead, anda low pressure, low velocity exit volume defined by said rigid canister downstream of said bulkhead and configured to receive the fluid/exhaust gas mixture from said high pressure, high velocity mixing conduit exit for further mixing of said fluid/exhaust gas mixture ...

Exhaust gas purification system for an internal combustion engine

The present invention is intended to suppress, in an exhaust gas purification system for an internal combustion engine capable of mixing and combusting liquid fuel and compressed natural gas, an excessive rise in temperature of an exhaust gas purification device at the time when the exhaust gas purification device is caused to regenerate. In the exhaust gas purification system for an internal combustion engine according to the present invention, when the liquid fuel and the compressed natural gas are caused to mix and combust in the internal combustion engine at the time of regenerating the exhaust gas purification device, an amount of HC to be supplied to the exhaust gas purification device from an HC supply device is decreased in comparison with the time when only the liquid fuel is caused to combust in the internal combustion engine.

PARTICLE SEPARATOR WITH A METAL LAYER THROUGH WHICH EXHAUST GAS CAN FLOW AND MOTOR VEHICLE HAVING AT LEAST ONE PARTICLE SEPARATOR

A particle separator for treating the exhaust gases of an internal combustion engine includes a housing having an inlet opening, an outlet opening, a cross section and a central axis. At least one metallic layer, through which exhaust gas can flow, is located in the housing and has an undulation or corrugation that spans the cross section of the housing. The particle separator has a large surface for providing the lowest possible flow resistance and a low risk of clogging. A motor vehicle having at least one particle separator is also provided. 1. A particle separator for the treatment of exhaust gases of an internal combustion engine , the particle separator comprising:a housing having an inlet opening, an outlet opening, a cross section and a central axis; andat least one metallic layer through which an exhaust gas can flow, said at least one metallic layer disposed in said housing and having at least one undulation spanning said cross section of said housing.2. The particle separator according to claim 1 , wherein said at least one undulation is a plurality of undulations spanning said cross section as secants.3. The particle separator according to claim 1 , wherein said at least one undulation runs in a plane perpendicular to said central axis.4. The particle separator according to claim 1 , wherein said at least one undulation extends through a plane inclined relative to said central axis.5. The particle separator according to claim 3 , wherein said at least one undulation has an undulation rise inclined relative to said plane by at least 45°.6. The particle separator according to claim 4 , wherein said at least one undulation has an undulation rise inclined relative to said plane by at least 45°.7. The particle separator according to claim 1 , wherein:said at least one undulation has a maximum running transversely relative to said housing and a minimum running transversely relative to said housing; andsaid maximum and said minimum are spaced apart by a spacing ...

CLEANABLE PARTICLE SEPARATOR AND MOTOR VEHICLE HAVING AT LEAST ONE PARTICLE SEPARATOR

A particle separator for treating the exhaust gases of an internal combustion engine includes at least one metallic layer through which exhaust gas can flow. The metallic layer is located in a housing that includes an inlet opening, an outlet opening and a central axis. The housing is provided with at least one inspection or maintenance opening that laterally penetrates the housing and provides a passage through to the metallic layer. The particle separator can, in particular, remain operational without having to be dismantled or can autonomously remain fully open to a flow at all times. A motor vehicle having at least one particle separator is also provided. 1. A particle separator for the treatment of exhaust gases of an internal combustion engine , the particle separator comprising:a housing having an inlet opening, an outlet opening, a central axis and at least one inspection opening extending laterally through said housing; andat least one metallic layer through which exhaust gas can flow;said at least one metallic layer disposed in said housing and said at least one inspection opening providing a passage to said at least one metallic layer.2. The particle separator according to claim 1 , wherein said at least one inspection opening has at least one separate casing extending into an interior of said housing.3. The particle separator according to claim 1 , wherein said at least one metallic layer has at least one depression to which said passage extends.4. The particle separator according to claim 1 , wherein said at least one metallic layer has at least one through-hole at which said passage ends.5. The particle separator according to claim 1 , wherein said passage is configured to be closed.6. The particle separator according to claim 1 , which further comprises a particle reservoir configured to be connected to said at least one inspection opening outside said housing.7. The particle separator according to claim 1 , which further comprises a pressure setting ...

MOUNTING MAT WITH LOWER FRICTION SURFACE FOR ASSEMBLING AND HIGHER FRICTION SURFACE FOR MOUNTING

A mounting mat () comprising at least one inorganic layer () comprising inorganic materials suitable for mounting a pollution control element in a pollution control device. A friction—inducing material () is disposed on at least one side of the inorganic layer (). The deposited friction—inducing material () defines a higher friction area exhibiting a static coefficient of friction higher than that of the inorganic materials. A lower friction layer () is disposed so as to cover at least a portion of the higher friction area and define an exposed surface area of the mounting mat (). The exposed surface area exhibits a lower static coefficient of friction than that of the higher friction area. The lower friction layer () no longer covers a substantial portion of the higher friction area, after the mounting mat () mounts a pollution control element () in a pollution control device (). 1. A mounting mat for mounting a pollution control element in a housing of a pollution control device , said mounting mat comprising:at least one inorganic layer comprising inorganic fibers, and optionally other inorganic materials, suitable for mounting a pollution control element in a housing of a pollution control device, with said at least one inorganic layer having opposite sides, and each said side defining a major surface area;a friction-inducing inorganic material disposed on at least a portion of the major surface area, of at least one of the sides of said at least one inorganic layer, so as to define a higher friction area exhibiting a static coefficient of friction higher than that of said inorganic materials; anda lower friction layer comprising organic material disposed so as to cover at least a portion of said higher friction area and define an exposed surface area of said mounting mat, with said exposed surface area exhibiting a lower static coefficient of friction than that of said higher friction area,wherein said lower friction layer is operatively adapted so as to no ...

ACTIVE DIESEL PARTICULATE FILTER REGENERATION SYSTEM USING NON-WORK LOAD AND METHOD THEREOF

The present disclosure relates to an active diesel particulate filter (DPF) regeneration system of an engine, and more particularly, to an active DPF regeneration system and method, in which a non-work load is arbitrarily provided to the engine to quickly perform an active DPF regeneration even in a state where substantial work of a construction machine is stopped. 1. An active diesel particulate filter regeneration system using a non-work load , comprising:an engine;pumps serially connected to the engine to discharge a working fluid, and configured to be capable of varying a discharge flow of the working fluid;a diesel particulate filter (DPF) disposed on an exhaust path through which exhaust gas discharged from the engine is discharged to the outside;a fuel injection means configured to perform an active DPF regeneration of combusting and removing soot collected in the diesel particulate filter by injecting a fuel into the exhaust path at a predetermined temperature;a selection switch configured to select the active DPF regeneration; andan active load generating means configured to provide a non-work load to the engine by increasing a discharge flow of the pump when the active DPF regeneration is selected.2. The active diesel particulate filter regeneration system of claim 1 , wherein the pump includes a main pump serially connected to the engine to supply the working fluid for driving a working unit claim 1 , andwhen the main pump is driven by a negative control system controlling the discharge flow of the working fluid by feeding back a signal value based on pressure of the working fluid collected in a tank through a center by-pass line, the active load generating means enables the main pump to discharge a maximum flow of working fluid by arbitrarily adjusting the fed back value to a minimum level during the active DPF regeneration.3. The active diesel particulate filter regeneration system of claim 2 , wherein the fed-back signal value is generated by applying ...

Particulate matter deposition amount estimation device, exhaust gas purification system, and particulate matter deposition amount estimation method

There are provided a differential pressure deposition amount of PM deposited in a DPF based on an exhaust gas flow rate and a differential pressure of the DPF, calculating a model deposition amount of the PM using a model in which a PM amount burned in the DPF is subtracted from the PM amount, calculating a time change rate of the differential pressure deposition amount, and setting a first coefficient to be larger than a second coefficient when the exhaust gas flow rate exceeds a predetermined value and setting the first coefficient to be small when the exhaust gas flow rate exceeds the predetermined value and the time change rate is a predetermined threshold or more when multiplying the differential pressure deposition amount and the model deposition amount by the first and second coefficients, respectively, and calculating an addition value of the respective multiplied values as the PM deposition amount.

EXHAUST SYSTEM WITH HC ADSORBER AND PARALLEL EXHAUST-GAS CATALYTIC CONVERTER, AND VEHICLE HAVING AN EXHAUST SYSTEM OF SAID TYPE

The invention relates to an exhaust system () for an internal combustion engine, having an exhaust gas path which, at least in sections, has two parallel exhaust ducts (), specifically a main duct () and a secondary duct (), wherein a HC adsorber () for the reversible adsorption of unburned hydrocarbons (HC) is provided in the secondary duct (); having a setting means () for selectively conducting an exhaust gas flow into the main duct () and/or into the secondary duct (), and having a main catalytic converter () arranged downstream of the parallel exhaust ducts (). It is intended that a catalytic exhaust gas converter () for converting at least one exhaust gas component is provided in the main duct () of the parallel exhaust ducts (). 110. An exhaust system () for an internal combustion engine comprising:{'b': 30', '32', '30', '32, 'an exhaust gas path that comprises two parallel exhaust ducts (, ), namely a main duct () and a secondary duct (), at least in some of its sections,'}{'b': 46', '30', '32, 'a setting means () for selectively conducting an exhaust gas flow into the main duct () and/or the secondary duct (),'}{'b': 42', '32, 'a HC adsorber () provided in the secondary duct () for reversible adsorption of unburned hydrocarbons (HC),'}{'b': 40', '30', '32, 'a main catalytic converter () located downstream of the parallel exhaust ducts (, ), and'}{'b': 44', '30', '30', '32, 'a catalytic exhaust gas converter () for converting at least one exhaust gas component provided in the main duct () of the parallel exhaust ducts (, ),'}{'b': 34', '32', '38', '36', '30', '46', '30', '32, 'wherein a junction section () of the secondary duct () into a common exhaust duct () comprises at least one inlet opening () that is designed such that at least a major portion of the exhaust gas flows through the main duct () when the setting means () is in a position in which both the main duct () and the secondary duct () are open.'}2104430. The exhaust system () according to claim ...

METHOD AND APPARATUS FOR COLD STARTING AN INTERNAL COMBUSTION ENGINE

The present invention relates to a method for achieving reduced emissions at cold start of an internal combustion engine having an exhaust gas after treatment system comprising at least one Diesel Oxygen Catalyst (DOC), at least one Diesel Particulate Filter (DPF) and a Selective Catalytic Reduction (SCR) unit, comprising the steps of: heating the DOC prior to cold starting said internal combustion engine, starting and controlling the internal combustion engine towards low NOx emission when said DOC has reached a predetermined temperature, optimizing the fuel consumption at a given total emission level when said DPF and SCR has reached a predetermined temperature. 18-. (canceled)9. A device for achieving reduced emissions at cold start of a diesel internal combustion engine having an exhaust gas after treatment system comprising at least one Diesel Oxygen Catalyst (DOC) , at least one Diesel Particulate Filter (DPF) downstream the DOC and a Selective Catalytic Reduction (SCR) unit downstream the DPF , wherein the device further comprises a HC trap , a NOx trap and a bypass channel with a valve provided between the DOC and the DPF r where the bypass channel with the valve is provided for bypassing the He trap and the NOx trap.10. The device according to claim 9 , wherein the HC-trap and the NOx-trap is provided as separate units.11. The device according to claim 9 , wherein the NOx-trap material is coated on the HC-trap material.1214-. (canceled) The present application is a divisional of U.S. application Ser. No. 13/063,296, filed Mar. 10, 2011, which is the national stage of International Application PCT/SE2008/000623, filed Oct. 31, 2008, both of which are incorporated by reference.The present invention relates to a method and apparatus for cold starting an internal combustion engine according.Vehicles equipped with diesel or another lean burn engine offer the benefit of increased fuel economy, however, control of nitrogen oxide (NOx) emissions from such engines ...

Burner device for raising temperature of exhaust gas

A burner device placed upstream of an exhaust treatment device mounted in an exhaust pipe to raise a temperature of an exhaust gas, comprises a fuel supply valve for supplying fuel into the exhaust pipe, an igniter that ignites the fuel supplied from the fuel supply valve, and a burner catalyst held in the exhaust pipe through a support member. The support member is formed in a corrugated shape in cross section including outer arc-shaped portions in contact with the exhaust pipe, inner arc-shaped portions in contact with an outer peripheral member of the burner catalyst, and coupling portions for coupling the outer arc-shaped portions and the inner arc-shaped portions to each other.

CONTROL OF DIESEL PARTICULATE FILTER REGENERATION DURATION

Termination of regeneration of a particulate filter may be based on a variable percent threshold of stored particulate, where the percent threshold of stored particulate depends on a current soot burn rate. In one example approach, a method for controlling regeneration of a diesel particulate filter comprises: terminating regeneration based on a particulate burning rate; wherein the particulate burning rate is based on operating conditions of the diesel particulate filter; the operating conditions including an amount of stored particulate in the diesel particulate filter and a temperature of the diesel particulate filter. 1. A method , comprising:combusting diesel fuel in an engine and delivering engine exhaust to a diesel particulate filter, including during first conditions at a first particulate storage level, burning soot at a higher rate, and terminating the regeneration at a lower soot storage level; and during second conditions at the first particulate storage level, burning soot at a lower rate, lower than the higher rate, and terminating the regeneration at a higher soot storage level.2. The method of claim 1 , wherein a particulate burning rate is determined based on operating conditions of the diesel particulate filter.3. The method of claim 2 , wherein the operating conditions include an amount of stored particulate in the diesel particulate filter and a temperature of the diesel particulate filter.4. The method of claim 1 , further comprising terminating regeneration based on a vehicle speed.5. A system for a vehicle claim 1 , comprising:an engine having an exhaust;a turbocharger coupled to the enginea particulate filter coupled in the exhaust downstream of a turbine of the turbocharger, and instructions to initiate particulate filter regeneration in response to vehicle operating conditions and an amount of stored particulate, and', 'instructions to terminate the particulate filter regeneration in response to the amount of stored particulate falling ...

CLEAN EXHAUST SYSTEM AND METHOD FOR DIESEL ENGINES OF MARINE VESSELS

An emission control system (ECS) and associated method for facilitating the emulsification and/or dispersion of hydrocarbon, diesel particulate matter (DPM) and other pollutants from the exhaust gas output from a diesel engine of a marine vessel, includes a pump, a control system that controls the pump, and a product container containing an environmentally approved dispersing product. The ECS injects dispersing product into the engine's water cooling and exhaust system, for example, into the cooling water downstream of the engine and upstream of the spray ring or mixing elbow of the exhaust system. The environmentally approved dispersing product is drawn from the product container via the pump and injected at a controlled rate into the raw cooling water, and the dispersing product/cooling water mixture admixes with the exhaust gas resulting in emulsification and/or dispersion of the hydrocarbon, DPM and other pollutants present in the exhaust gas. 1. An emission control system (ECS) for facilitating the emulsification and/or dispersion of hydrocarbon , diesel particulate matter (DPM) and other pollutants from the exhaust gas output from a engine of a marine vessel , the engine including a water cooling and wet exhaust system , comprising:a pump;a control system that controls the pump;a product container containing an environmentally approved dispersing product; anda supply tube coupling the pump, dispersing product, and water cooling and exhaust system; andwherein the environmentally approved dispersing product is injected into the water cooling system at a rate determined by the control system.2. The emission control system of claim 1 , wherein the water cooling and exhaust system includes a spray ring coupling an outlet pipe carrying cooling water from the engine to an exhaust pipe claim 1 , and the supply tube is connected to the outlet pipe.3. The emission control system of claim 1 , wherein the supply tube is connected to the exhaust pipe upstream of the spray ...

Integrated Exhaust Gas After-Treatment System for Diesel Fuel Engines

An integrated exhaust gas after-treatment system for eliminating pollutants present in exhaust gases is disclosed. The integrated exhaust gas after-treatment system includes a Diesel Oxidation Catalyst (DOC)—Diesel Particulate Filter(DPF) assembly, a Selective Catalytic Reduction (SCR), a dosing module and a reducing agent supply system. The Diesel Oxidation Catalyst (DOC)—Diesel Particulate Filter (DPF) assembly is connected to an exhaust gas manifold of an engine and includes a canister for holding a Diesel Oxidation Catalyst (DOC) and a Diesel Particulate Filter (DPF). The Diesel Particulate Filter (DPF) is disposed downstream of the Diesel Oxidation Catalyst (DOC) and is spaced there-from. The Selective Catalytic Reduction (SCR) is disposed downstream of the Diesel Oxidation Catalyst (DOC)—Diesel Particulate Filter (DPF) assembly and facilitates elimination of NOx present in the exhaust gases by reduction of the NOx. 1. An integrated exhaust gas after-treatment system for eliminating pollutants present in exhaust gases emitted from an engine as said exhaust gases pass there-through , said integrated exhaust gas after-treatment system comprising: a canister adapted to receive exhaust gases from said exhaust gas manifold of the engine and provided with a plurality of mountings configured thereon to mount for facilitating mounting of different sensors, the canister having an operative top end, a length, and an operative bottom end;', 'a Diesel Oxidation Catalyst disposed inside said canister and adjacent said operative top end, said Diesel Oxidation Catalyst defining plurality of flow passages configured along the length thereof to facilitate laminar flow of the exhaust gases there-through, said Diesel Oxidation Catalyst adapted to oxidize NO, CO and hydro-carbons present in the exhaust gases, thereby raising the temperature of the exhaust gases;', 'a Diesel Particulate Filter disposed inside said canister and adjacent said operative bottom end thereof to trap ...

System and method for controlling exhaust regeneration

A system for controlling regeneration in an after-treatment component comprises a feedback module, an error module, a gain module, and a regeneration control module. The feedback module is configured for determining a rate of change of the value of a controlled parameter. The error module is in communication with the feedback module and is configured for determining a value of an error term by subtracting a value of a target parameter from the value of the controlled parameter. The gain module is configured for determining a value of a proportional gain factor by raising a mathematical constant “e” to the negative power of the value of a tuned gain exponent and for determining a value of a derivative gain factor by multiplying the value of the proportional gain factor by a tuning factor. The regeneration control module is configured for determining a value of a rational control increment.

Exhaust system having multiple dosers

An exhaust system for a machine is disclosed. The exhaust system may have a diffuser configured to receive exhaust from an engine. The exhaust system may further have a plurality of dosers associated with the diffuser and configured to inject fuel into the diffuser. The exhaust system may also have a controller configured to selectively control an amount of fuel injected by each of the plurality of dosers based on a velocity of the exhaust adjacent to each doser. In addition, the exhaust system may have an after-treatment component fluidly connected downstream of the diffuser and configured to heat the exhaust by oxidizing the injected fuel.

REGENERATION ASSIST CALIBRATION

A power system comprising an engine that produces exhaust, a fuel system that injects a fuel into the engine, an aftertreatment system that treats the exhaust, and is controller. The aftertreatment system includes an oxidation catalyst that converts NO from the engine into NO2, a particulate filter that traps soot from the engine, and a sensor that provides an indication of the amount of soot in the particulate filter. The controller increases an engine fuel injection pressure when the amount of soot in the particulate filter is above a threshold. 120-. (canceled)21. A power system comprising:an engine configured to produce exhaust;a particulate filter configured to trap soot from the engine; anda controller configured to switch the power system from a first operation mode to a second operation mode configured to regenerate the particulate filter,wherein a transition between the first operation mode and the second operation mode occurs at a slower rate when an amount of soot in the particulate filter changes relative to a threshold than when a load on the engine changes.22. The power system of claim 21 , wherein the second operation mode includes actuating a regeneration valve claim 21 , and the regeneration valve actuates at a slower rate when the amount of soot in the particulate filter changes relative to the threshold than when the load on the engine increases.23. The power system of claim 21 , wherein a transition from the second operation mode back to the first operation mode occurs at the slower rate when the amount of soot in the particulate filter falls below the threshold than when the load on the engine increases.24. The power system of claim 23 , wherein the second operation mode includes a closing of a regeneration valve claim 23 , and the regeneration valve opens at the slower rate when the amount of soot in the particulate filter falls below the threshold than when the load on the engine increases.25. The power system of claim 24 , wherein the ...

EXHAUST GAS PURIFYING SYSTEM FOR INTERNAL COMBUSTION ENGINE

In an ordinary mode, when an abnormality diagnosis of a PM sensor attached to a downstream opening downstream of a filter is performed, the PM sensor is moved to a first upstream opening upstream of the filter, and an exhaust gas is discharged from an engine. An ECU stores a program for the abnormality diagnosis. In an abnormality diagnosis mode, the ECU diagnoses the PM sensor by comparing an output value of the PM sensor to a standard output after performing the program. The first upstream opening may be closed by a cover in the ordinary mode. 1. An exhaust gas purifying system for an internal combustion engine , comprising:a filter provided in an exhaust pipe of the internal combustion engine for collecting particulate matters;a subject sensor provided at a first position of the exhaust pipe downstream of the filter for detecting an amount of the particulate matters in an exhaust gas; anda first opening defined at a second position of the exhaust pipe upstream of the filter, the first opening directly or indirectly receiving the subject sensor when the subject sensor is taken away from the first position for performing an abnormality diagnosis of the subject sensor.2. An exhaust gas purifying system according to claim 1 , whereinwhen the abnormality diagnosis of the subject sensor is performed, the first opening directly receives the subject sensor taken away from the first position.3. An exhaust gas purifying system according to claim 1 , further comprising:a second opening defined at a third position of the exhaust pipe upstream of the filter, the second opening directly receiving a standard sensor for performing the abnormality diagnosis of the subject sensor.4. An exhaust gas purifying system according to claim 1 , whereinwhen the abnormality diagnosis of the subject sensor is performed, a branch pipe is connected to the first opening, andthe branch pipe has a branch opening for receiving the subject sensor taken away from the first position.5. An exhaust gas ...

CONTROLLER OF INTERNAL COMBUSTION ENGINE

This invention has an object to appropriately correct characteristic variation of a PM sensor and to improve detection accuracy of the sensor. 1. A controller for an internal combustion engine comprising:a PM sensor having a detection portion for capturing particulate matters in an exhaust gas and outputting a detection signal according to the captured amount and a heater for heating the detection portion;PM combusting unit for combusting and removing the particulate matters by electrical conduction to the heater if a predetermined amount of the particulate matters are captured by the detection portion of the PM sensor; andsensitivity correcting unit to correct an output sensitivity of the PM sensor by using a relationship between a supply power amount to the heater required for changing the sensor output by a certain amount and the output sensitivity of the PM sensor, the sensitivity correcting unit for measuring a parameter corresponding to power supplied to the heater while the detection signal changes from a first signal value to a second signal value different from the signal value in a state where electricity to the heater is turned on by the PM combusting unit and for correcting output sensitivity of the detection signal with respect to the captured amount of the particulate matters on the basis of the parameter.2. The controller for an internal combustion engine according to claim 1 , whereinthe PM combusting unit is configured to supply constant power over time to the heater when the sensitivity correcting means is operated; andthe sensitivity correcting unit is configured to measure, as the parameter, elapsed time during which the detection signal changes from the first signal value to the second signal value.3. The controller for an internal combustion engine according to claim 1 , whereinthe sensitivity correcting unit is configured to measure, as the parameter, a supply power integrated amount which is a total sum of power supplied to the heater while ...

Exhaust gas processing device for diesel engine

An exhaust gas processing device for a diesel engine includes a DPF, a PM deposition amount estimating unit for PM deposited in the DPF, a DPF regenerating unit, a DPF regeneration control unit, a storage unit, an acceleration regeneration request information notifying unit, an acceleration regeneration start operating unit, and a mode selecting unit. When a normal regeneration process is selected, the time at which acceleration regeneration request determination reserve period T 1 elapses from the start of the normal regeneration process without the end of the normal regeneration process is time T 2 for acceleration regeneration request determination, at which time, if the PM deposition amount estimation value is greater or equal to acceleration regeneration request determination value J 2 , it is determined that there is the acceleration regeneration request. The DPF regeneration control unit allows the acceleration regeneration request information notifying unit to start notification of the acceleration regeneration request information.

EXHAUST PURIFICATION SYSTEM FOR WORKING MACHINE

An exhaust purification system for a working machine reliably issues filter regeneration warnings to the operator, prompting manual regeneration, so that damage to the DPF device can be avoided. When a PM estimate becomes higher than a given value, a screen displays a warning message prompting manual regeneration. If the warning message fails to prompt the operator to perform manual regeneration and reference time t has passed since the display of the warning message, a speaker outputs a first warning sound. When the operator notices the first warning sound and turns on a regeneration switch, regeneration control is started. If the operator fails to notice the first warning sound and reference time t passes, the speaker instead outputs a second warning sound louder than the first warning sound. When the operator notices the second warning sound and turns on the regeneration switch, regeneration control is started. 1. (canceled)2. (canceled)3. An exhaust purification system for working machine , the system comprising:{'b': 32', '1, 'a filler (), located in an exhaust system of an engine (), for capturing particulate matter contained in exhaust;'}{'b': 33', '39, 'a regeneration device (, ) for burning off particulate matter accumulated on the filter to regenerate the filler;'}{'b': '42', 'a regeneration controller () for starting or stopping the operation of the regeneration device;'}{'b': '38', 'a regeneration switch () for instructing the regeneration controller to start regeneration; and'}{'b': 6', '42', '43, 'i': a', 'a, 'warning means (, , ) for prompting an operator to turn on the regeneration switch,'}{'b': 3', '8', '41', '47, 'i': 'a', 'wherein the system further comprises status judging means (, , , ) for judging the status of the working machine,'}{'b': 6', '41, 'i': c', 'b, 'wherein the warning means includes a warning sound output function () for outputting warning sounds and a warning sound altering function () for altering the warning sounds after the ...

CONTROL OF AFTERTREATMENT REGENERATION IN A HYBRID POWERED VEHICLE

A method for controlling aftertreatment regeneration for a system having a hybrid powertrain is described. The method includes determining that an engine aftertreatment regeneration is indicated when a regeneration request index exceeds a first threshold. The method includes determining an acceptable battery usage amount based on a current battery state of charge (SOC) and a minimum battery SOC. The method further includes determining a battery usage amount for an engine aftertreatment regeneration operation. The method includes initiating an engine aftertreatment regeneration when the battery usage amount is less than or equal to the acceptable battery usage amount. 1. A method , comprising:determining that an engine aftertreatment regeneration is indicated in response to a regeneration request index exceeding a first threshold;calculating a battery usage amount for an engine aftertreatment regeneration operation in response to the determining the engine aftertreatment regeneration is indicated;determining an acceptable battery usage amount in response to a current battery state of charge (current SOC) and a minimum battery state of charge (minimum SOC); andinitiating the engine aftertreatment regeneration operation in response to the battery usage amount being not greater than the acceptable battery usage amount.2. The method of claim 1 , further comprising preventing the engine aftertreatment regeneration operation in response to the battery usage amount exceeding the acceptable battery usage amount.3. The method of claim 1 , further comprising:determining a plurality of battery usage amounts, each corresponding to one of a plurality of engine aftertreatment regeneration operation modes;selecting one of the engine aftertreatment regeneration operation modes having a corresponding battery usage amount that is not greater than the acceptable battery usage amount; andwherein the initiating comprises initiating the selected engine aftertreatment regeneration ...

SYSTEM AND METHOD FOR ACTIVE REVENERATION OF A DPF OF A CONSTRUCTION MACHINE HAVING AN ELECTRO-HYDRAULIC PUMP

An exemplary embodiment of the present disclosure relates to a system for active regeneration of a DPF of a diesel engine, and more particularly, to a system and a method for active regeneration of a DPF including an electro-hydraulic pump, in which a non-work load is arbitrarily provided to the diesel engine to quickly perform active regeneration of the DPF even in a state in which substantial work of the construction machine having an electro-hydraulic pump is stopped, and to this end, provides a system and a method for active regeneration of a DPF of a construction machine in that, when performing the active regeneration of the DPF, a center bypass cut valve is driven to convert a hydraulic system of the construction machine to an open state, a predetermined flow rate of working fluid is discharged from the electro-hydraulic pump using an adjustor such as an electromagnetic proportional control valve (EPPR), and the working fluid is collected in to a tank through an opened center bypass line, thus allowing the working fluid to flow without driving a working machine to produce a so-called non-work load, and the engine is overheated by the load, and the temperature of the exhaust gas is raised to a predetermined temperature so as to satisfy a temperature condition required for the active regeneration of the DPF. 1. A system for active regeneration of a DPF of a construction machine having an electro-hydraulic pump , the system comprising:a diesel engine;electro-hydraulic pumps driven by the diesel engine and of which a discharge flow rate is adjusted by a current control of a controller;a plurality of working machines driven by working fluid discharged from the electro-hydraulic pumps;a center bypass line having one end connected to the electro-hydraulic pumps, and the other end connected to a tank, so that the working fluid discharged from the electro-hydraulic pumps returns back to the tank when the plurality of working machine is not driven;center bypass cut ...

EXHAUST SYSTEM INCLUDING NOx REDUCTION CATALYST AND EGR CIRCUIT

An exhaust system for a vehicular lean burn internal combustion engine that emits oxides of nitrogen (NOx) and particulate matter (PM) is disclosed. The system comprises a NOx reduction catalyst for reducing NOx in the presence of a reductant, means for introducing reductant into a flowing exhaust gas and a source of hydrocarbon reductant, a nitrogenous reductant, and/or hydrogen, a filter for removing PM from exhaust gas flowing in the exhaust system and a low pressure exhaust gas recirculation (EGR) circuit for connecting the exhaust system downstream of the filter to an air intake of the engine. The EGR circuit comprises a IMOx adsorber catalyst (NAC) comprising a NO adsorbent. 1. An exhaust system for a vehicular lean burn internal combustion engine that emits oxides of nitrogen (NO) and particulate matter (PM) , the system comprising a NOreduction catalyst for reducing NOin the presence of a reductant , means for introducing reductant into a flowing exhaust gas and a source of reductant selected from the group consisting of a hydrocarbon reductant , a nitrogenous reductant , hydrogen and mixtures of any two or more thereof , a filter for removing PM from exhaust gas flowing in the exhaust system and a low pressure exhaust gas recirculation (EGR) circuit for connecting the exhaust system downstream of the filter to an air intake of the engine , wherein the EGR circuit comprises a NOadsorber catalyst (NAC) comprising a nitric oxide (NO) adsorbent.2. An exhaust system according to claim 1 , wherein the NO adsorbent consists of palladium and a cerium oxide or a mixed oxide or composite oxide containing cerium and at least one other transition metal.3. An exhaust system according to claim 1 , wherein the NO adsorbent includes palladium dispersed on ceria or a mixed oxide or composite oxide containing cerium and at least one other transition metal.4. An exhaust system according to claim 2 , wherein the at least one other transition metal in the mixed oxide or ...

PARTICULATE MATTER PROCESSING APPARATUS

Aggregation of particulate matter is facilitated. Provision is made for an electrode that is arranged in an exhaust passage of an internal combustion engine with a voltage to be applied thereto being able to be changed, a detection device that detects an electric current passing through the electrode, a determination device that determines whether a pulse current has been generated in the electric current detected by the detection device, and a control device that reduces the voltage to be applied more than that at this time in cases where a determination has been made by the determination device that a pulse current has been generated. 1. A particulate matter processing apparatus comprising:an electrode that is arranged in an exhaust passage of an internal combustion engine with a voltage to be applied thereto being able to be changed;a detection device that detects an electric current passing through said electrode;a determination device that determines whether a pulse current has been generated in the electric current detected by said detection device; anda control device that reduces said voltage to be applied more than that at this time in cases where a determination has been made by said determination device that a pulse current has been generated.2. The particulate matter processing apparatus as set forth in claim 1 , wherein said control device increases said voltage to be applied more than that at this time in cases where a determination has been made by said determination device that a pulse current is not generated.3. The particulate matter processing apparatus as set forth in claim 1 , further comprising:a processing part that is arranged in said exhaust passage with said electrode installed therein;an insulation part that insulates electricity between said processing part and said exhaust passage;a ground part that grounds said processing part; anda power supply that is connected to said electrode and applies a voltage thereto;wherein said detection ...

Control of exhaust flow in an engine including a particulate filter

Methods and systems for controlling operation of exhaust of an engine including a particulate filter are provided. One example method includes generating vacuum during engine operation, and storing the vacuum. The method further includes, during or after engine shutdown, drawing ambient air through the particulate filter via the vacuum.

PARTICULATE MATTER PROCESSING APPARATUS

An excessively large electric current is suppressed from flowing to an electrode. Provision is made for an electrode arranged in an exhaust passage of an internal combustion engine, a power supply connected to the electrode for applying a voltage thereto, an air fuel ratio detection device for detecting or estimating an air fuel ratio of an exhaust gas which flows through the exhaust passage, and a power upper limit setting device for setting an upper limit for electric power supplied to the electrode from the power supply in cases where the air fuel ratio detected or estimate. 1. A particulate matter processing apparatus comprising:an electrode that is arranged in an exhaust passage of an internal combustion engine;a power supply that is connected to said electrode and applies a voltage thereto;an air fuel ratio detection device that detects or estimates an air fuel ratio of an exhaust gas which flows through said exhaust passage; anda power upper limit setting device that sets an upper limit for electric power supplied to said electrode from said power supply in cases where the air fuel ratio detected or estimated by said air fuel ratio detection device is a rich air fuel ratio.2. The particulate matter processing apparatus as set forth in claim 1 , wherein the lower the air fuel ratio detected or estimated by said air fuel ratio detection device claim 1 , the smaller said power upper limit setting device makes said upper limit.3. The particulate matter processing apparatus as set forth in claim 1 , further comprising:an exhaust gas amount detection device that detects or estimates an amount of exhaust gas in the internal combustion engine;wherein the more the amount of exhaust gas detected or estimated by said exhaust gas amount detection device, the smaller said power upper limit setting device makes said upper limit. The present invention relates to a particulate matter processing apparatus.There has been known a technique in which a discharge electrode is ...

METHOD FOR ENRICHING THE EXHAUST GAS OF AN INTERNAL COMBUSTION ENGINE WITH REDUCING AGENT AND INTERNAL COMBUSTION ENGINE FOR PERFORMING SUCH A METHOD

A method for enriching the exhaust gas of an internal combustion engine with a reducing agent is provided, the internal combustion engine including at least one cylinder and having an intake system for admission of charge air, an exhaust gas discharge system for discharging exhaust gases, and at least one exhaust gas aftertreatment system for reducing nitrogen oxides arranged in the exhaust gas discharge system and which is periodically provided with a supply of reducing agent. The method comprises enriching the exhaust gas with the reducing agent in the exhaust gas discharge system upstream of at least the one exhaust gas aftertreatment system when a fuel supply of the at least one cylinder of the internal combustion engine is deactivated due to an absence of load demand. 1. A method for enriching the exhaust gas of an internal combustion engine with a reducing agent , the internal combustion engine comprising at least one cylinder having an intake system for admission of charge air , an exhaust gas discharge system for discharging exhaust gases , and at least one exhaust gas aftertreatment system for reducing nitrogen oxides arranged in the exhaust gas discharge system and which is periodically provided with a supply of reducing agent , the method comprising:enriching the exhaust gas with the reducing agent in the exhaust gas discharge system upstream of at least the one exhaust gas aftertreatment system when a fuel supply of the at least one cylinder of the internal combustion engine is deactivated due to an absence of load demand.2. The method as claimed in claim 1 , wherein the exhaust gas aftertreatment system for reducing the nitrogen oxides comprises a selective catalytic converter.3. The method as claimed in claim 1 , wherein the exhaust gas aftertreatment system for reducing the nitrogen oxides comprises a storage catalytic converter.4. The method as claimed in claim 1 , wherein the reducing agent comprises ammonia.5. The method as claimed in claim 1 , ...

FLUID COOLED INJECTOR AND EXHAUST AFTERTREATMENT SYSTEM, VEHICLE, AND METHOD USING A FLUID COOLED INJECTOR

A fluid cooled injector includes an injector body comprising an injector tip and a cooling channel, the injector tip comprising an injector orifice, and a heat conducting shield, the heat conducting shield comprising a heat conducting shield orifice arranged coaxially with the injector orifice, the heat conducting shield being in direct contact with at least one of the injector body and the injector tip. An exhaust after treatment system and a vehicle including such an injector, and a method involving the use of such an injector, are also disclosed. 1. A fluid cooled injector , comprising:an injector body comprising an injector tip and a cooling channel, the injector tip comprising an injector orifice; anda heat conducting shield, the heat conducting shield comprising a heat conducting shield orifice arranged coaxially with the injector orifice, the heat conducting shield being in direct heat conducting contact with at least one of the injector body and the injector tip.2. The fluid cooled injector as set forth in claim 1 , wherein the injector body comprises a main body portion and the injector tip comprises a cylindrical portion that extends from the main body portion.3. The fluid cooled injector as set forth in claim 2 , wherein the heat conducting shield is in direct contact with at least part of the cylindrical portion.4. The fluid cooled injector as set forth in claim 2 , wherein the heat conducting shield is in direct contact with a top surface of the cylindrical portion surrounding the injector orifice.5. The fluid cooled injector as set forth in claim 2 , wherein the heat conducting shield is spaced from at least part of the cylindrical portion.6. The fluid cooled injector as set forth in claim 2 , wherein the heat conducting claim 2 , shield is in direct contact with the main body portion and the cylindrical portion.7. The fluid cooled injector as set forth in claim 1 , wherein the heat conducting shield is made of a material that is at least as conductive ...