LUBRICATING OIL COMPOSITIONS

A lubricating oil composition which contains, or is made by admixing: 2. A composition as claimed in claim 1 , wherein the one or more oil-soluble or oil-dispersible sulfurized fatty acid ester(s) is a sulfurized Cto Caliphatic hydrocarbyl fatty acid alkyl ester claim 1 , a sulfurized Cto Caliphatic hydrocarbyl fatty acid glycerol ester claim 1 , or a mixture thereof.3. A composition as claimed in claim 2 , wherein the one or more oil-soluble or oil-dispersible sulfurized fatty acid ester(s) is a sulfurized Cto Caliphatic hydrocarbyl fatty acid methyl ester.4. A composition as claimed in claim 1 , wherein the one or more oil-soluble or oil-dispersible sulfurized fatty acid ester(s) is derived from sulfurizing a vegetable oil and/or a trans-esterified product of a vegetable oil.5. A composition as claimed in claim 5 , wherein the one or more oil-soluble or oil-dispersible sulfurized fatty acid ester(s) is derived from sulfurizing palm oil claim 5 , corn oil claim 5 , grapeseed oil claim 5 , coconut oil claim 5 , cottonseed oil claim 5 , wheatgerm oil claim 5 , soya oil claim 5 , safflower oil claim 5 , olive oil claim 5 , peanut oil claim 5 , rapeseed oil claim 5 , sunflower oil claim 5 , or a trans-esterified product thereof claim 5 , or a combination thereof.6. A composition as claimed in claim 1 , wherein the one or more sulfurized fatty acid ester(s) has a sulphur content of from 5 to 20 mass %.7. A composition as claimed in claim 2 , wherein the one or more sulfurized fatty acid ester(s) has a sulphur content of from 5 to 20 mass %.8. A composition as claimed in claim 3 , wherein the one or more sulfurized fatty acid ester(s) has a sulphur content of from 5 to 20 mass %.9. A compositions as claimed in claim 1 , wherein the one or more oil-soluble or oil-dispersible alkali metal or alkaline earth metal salicylate detergent(s) is an overbased alkali metal or alkaline earth metal salicylate detergent having a TBN at 100% active mass of at least 150 mg KOH/g.10. A ...

EGR EQUIPPED DIESEL ENGINES AND LUBRICATING OIL COMPOSITIONS

Soot induced kinematic viscosity increase of lubricating oil compositions for diesel engines, particularly heavy duty diesel engines, equipped with EGR systems, particularly EGR systems operating in a condensing mode, can be ameliorated by addition of an alkylated phenothiazine compound. 1. A diesel engine provided with an exhaust gas recirculation system , said engine being lubricated with a lubricating oil composition comprising a major amount of oil of lubricating viscosity , and a minor amount of one or more oil-soluble or oil-dispersible alkylated phenothiazines.3. A diesel engine of wherein Ris an alkyl group having 4 to 10 carbon atoms.4. A diesel engine of wherein Ris a hydrogen atom or an alkyl group having 4 to 10 carbon atoms.5. A diesel engine of wherein Ris an alkyl group having 4 to 10 carbon atoms and Ris a hydrogen atom or an alkyl group having 4 to 10 carbon atoms.6. A diesel engine of wherein Ris a nonyl group and Ris a hydrogen atom or a nonyl group.7. A diesel engine of wherein the alkylated phenothiazine comprises a mixture of mono- and dialkylated phenothiazines.8. A diesel engine of wherein 15 to 85 mass % of the mixture is monoalkylated.9. A diesel engine of wherein the alkylated phenothiazine comprises a mixture of mono- and dialkylated phenothiazines.10. A diesel engine of wherein 15 to 85 mass % of the mixture is monoalkylated.11. A diesel engine of wherein the lubricating oil composition comprises from 0.04 to 4.5 mass % of the phenothiazine claim 1 , based on the total mass of the lubricating oil composition.12. A diesel engine of wherein the lubricating oil composition further comprises from 0.1 to 5 mass % of at least one ashless antioxidant compound selected from the group consisting of hindered phenol compounds claim 1 , diphenylamine compounds claim 1 , and mixtures thereof.13. A diesel engine of wherein the lubricating oil composition comprises at least one additive claim 1 , other than the phenothiazine claim 1 , selected from the ...

Lubricating Oil Composition

An automotive lubricating oil composition for an internal combustion engine comprises (A) an oil of lubricating viscosity in a major amount; and (B) an oil-soluble zinc dithiocarbamate as an additive component in a minor amount in which each of the two amino groups is substituted with an aryl group and with either another aryl group, an aliphatic group or a hydrogen atom, the composition having not greater than 1600 ppm by mass of phosphorus, expressed as phosphorous atom. 1. An automotive lubricating oil composition for an internal combustion engine comprising , or made by admixing:(A) an oil of lubricating viscosity in a major amount; and(B) as an additive component in a minor amount, one or more oil-soluble zinc dithiocarbamates, wherein each amino group is substituted with an aryl group, and with another aryl group, an aliphatic group or a hydrogen atom,the composition having not greater than 1600 ppm by mass of phosphorus, expressed as phosphorus atoms.2. A composition as claimed in where the or each zinc dithiocarbamate is represented by the formula:{'br': None, 'sup': 1', '2', '3', '4, 'RRN—CS—S—Zn—S—CS—NRR'}{'sup': 1', '3', '2', '4, 'where, independently, Rand Reach represents an aryl group and Rand Reach represents an aryl group or an alkyl group or a hydrogen atom.'}3. A composition as claimed in wherein each aryl group is an unsubstituted phenyl group or an alkyl-substituted phenyl group.4. A composition as claimed in wherein each alkyl group claim 2 , when present claim 2 , has from 1 to 30 carbon atoms.5. A composition as claimed in wherein each alkyl group claim 4 , when present claim 4 , has 3 to 18 carbon atoms.6. A composition as claimed in wherein each amino group is substituted with two aryl groups.7. A composition as claimed in wherein each of R claim 2 , R claim 2 , Rand Reach represents an aryl group.8. A composition as claimed in wherein the composition has a sulfated ash value of up to 1.0 and a sulfur content of up to 0.4 mass %.9. A ...

LUBRICATING OIL COMPOSITIONS

A lubricating oil composition comprising a major amount of oil of lubricating viscosity and a minor amount of one or more compounds of formula (I): 2. A lubricating oil composition according to wherein Rrepresents methyl or ethyl.3. A lubricating oil composition according to wherein Rrepresents methyl.4. A lubricating oil composition according to wherein Rrepresents methyl or ethyl.5. A lubricating oil composition according to wherein Rrepresents ethyl.6. A lubricating oil composition according to wherein Rrepresents methyl or ethyl.7. A lubricating oil composition according to wherein Rrepresents ethyl.8. A lubricating oil composition according to having a TBN of at least 6 mg KOH/g claim 1 , as measured in accordance with ASTM D-4739.9. A lubricating oil composition according to having a TBN of from 6 to 15 mg KOH/g claim 8 , as measured in accordance with ASTM D-4739.10. A lubricating oil composition according to having a SASH content of no greater than 1.1 mass %.11. A lubricating oil composition according to having a SASH content of no greater than 1.0 mass %.12. A lubricating oil composition according to having a SASH content of no greater than 0.8 mass %.13. A lubricating oil composition according to wherein at least 10% of the compositional TBN claim 1 , as measured in accordance with ASTM D-4379 is derived from ashless TBN sources including at least one compound of formula (I).14. A lubricating oil composition according to wherein at least 15% of the compositional TBN claim 13 , as measured in accordance with ASTM D-4379 is derived from ashless TBN sources including at least one compound of formula (I).15. A lubricating oil composition according to wherein at least 20% of the compositional TBN claim 14 , as measured in accordance with ASTM D-4379 is derived from ashless TBN sources including at least one compound of formula (I).16. A lubricating oil composition according to having a sulfur content of less than 0.4 mass claim 1 , and no greater than 1200 ppm ...

Lubricating Oil Composition

A crankcase lubricating oil composition comprising (A) an oil of lubricating viscosity in a major amount; and (B) an additive component in a minor amount comprising one or more oil-soluble sterically unhindered meta-hydrocarbyl substituted phenols. 1. A crankcase lubricating oil composition comprising or made by admixing(A) an oil of lubricating viscosity in a major amount; and(B) an additive component in a minor amount comprising, one or more oil-soluble sterically unhindered meta linear pentadecenyl-substituted phenols, which are unfunctionalised or functionalised, the composition comprising less than 0.8 mass % of an aminic anti-oxidant and/or less than 0.5 mass % of a hindered phenolic anti-oxidant, provided that when (B) is unfunctionalised, the composition does not contain a sulphurised mixture of alkenes.2. A composition as claimed in where the meta substituent is an 8-pentadecenyl or a pentadecyl group.3. A composition as claimed in where (B) comprises distilled cashew nut shell liquid (or cardanol) or hydrogenated distilled cashew nut shell liquid.4. A composition as claimed in where (B) comprises distilled cashew nut shell liquid (or cardanol) or hydrogenated distilled cashew nut shell liquid.5. A composition as claimed in where (B) is a mixture of oil-soluble phenolic compounds comprising 50 or more mass % of one or more of the sterically unhindered meta substituted phenols.6. A composition as claimed in where (B) is a mixture of oil-soluble phenolic compounds comprising 70 or more mass % of one or more of the sterically unhindered meta substituted phenols.7. A composition as claimed in where (B) is a mixture of oil-soluble phenolic compounds comprising 90 or more mass % of one or more of the sterically unhindered meta substituted phenols.9. A composition as claimed in further including one or more other additive components claim 8 , different from (B).10. A composition as claimed in where the other additives claim 9 , different from (B) claim 9 , are ...

Lubricating Oil Compositions Containing Sterically Hindered Amines as Ashless TBN Sourcces

Hindered amines useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials, and lubricating oil compositions containing such compounds.

LUBRICATING OIL COMPOSITIONS

A crankcase lubricating oil composition for the crankcase of a spark-ignited or compression-ignited internal combustion engine, comprising a magnesium-containing detergent, in an amount sufficient to provide from 200-4000 ppm magnesium to the lubricating oil composition, in combination with an oil-soluble or oil-dispersible molybdenum compound in an amount sufficient to provide from 600-1500 ppm molybdenum atoms to the lubricating oil composition, and with an oil-soluble or oil-dispersible boron-containing compound in an amount sufficient to provide from 200-600 ppm boron atoms to the lubricating oil composition to improve the friction and fuel economy performance. 1. A crankcase lubricating oil composition comprising or made by admixing:(A) an oil of lubricating viscosity, in a major amount;(B) an oil-soluble or oil-dispersible molybdenum-containing additive, providing from 600-1500 ppm of molybdenum atoms to the lubricating oil composition;(C) a detergent composition comprising one or more magnesium sulfonate detergents in an amount providing from 200 to 4000 ppm magnesium atoms to the lubricating oil composition, measured according to ASTM D5185; and(D) an oil-soluble or oil-dispersible boron-containing compound present in the lubricating oil composition in an amount sufficient to provide from 200-600 ppm boron atoms to the lubricating oil composition, measured according to ASTM D5185.2. A lubricating oil composition according to claim 1 , wherein the detergent composition comprises one or more additional detergent additive selected from magnesium salicylate claim 1 , calcium salicylate claim 1 , calcium sulfonate claim 1 , magnesium phenate claim 1 , calcium phenate claim 1 , hybrid detergents comprising two or more of these additional detergent additives and/or combinations thereof.3. A lubricating oil composition according to claim 2 , wherein the detergent composition further comprises a calcium salicylate and/or a calcium sulfonate detergent.4. A lubricating ...

LUBRICATING OIL COMPOSITION

An automotive lubricating oil composition for an internal combustion engine comprises (A) an oil of lubricating viscosity in a major amount; and (B) oil-soluble additive components in respective minor amounts comprising (B1) a zinc dihydrocarbyl dithiophosphate additive; and (B2) an alkylenebis(dihydrocarbyldithiocarbamate) where at least one of the hydrocarbyl groups in an aryl group, the composition having not greater than 1600 ppm by mass of phosphorus, expressed as phosphorus atom. 1. An automotive lubricating oil composition for an internal combustion engine comprising , or made by admixing:(A) an oil of lubricating viscosity in a major amount; and (B1) a zinc dihydrocarbyl dithiophosphate additive; and', '(B2) an alkylenebis(dihydrocarbyldithiocarbamate) where at least one of the hydrocarbyl groups is a substituted or unsubstituted aryl group,, '(B) oil-soluble additive components, in respective minor amounts comprising'}the composition having not greater than 1600 ppm by mass of phosphorus, expressed as phosphorus atoms.2. The composition of where B2 is represented by the formula{'br': None, 'sup': 1', '1, 'sub': '2', 'RRNC(S)—S—(CH)—S—C(S)—NRR'} [{'sup': '1', 'Ris hydrogen, branched or unbranched alkyl having from 1-30 carbon atoms, or substituted or unsubstituted aryl; and'}, 'n is an integer from 1-20., 'where R is a substituted or unsubstituted aryl group;'}3. The composition of wherein each aryl group is an unsubstituted phenyl group or is an alkyl-substituted phenyl group or is a heteroatom-substituted phenyl group claim 1 , the alkyl group(s) being branched or unbranched and having 1-30 carbon atoms.4. The composition of where claim 1 , in (B2) claim 1 , two of the hydrocarbyl groups are each substituted or unsubstituted aryl groups and two of the hydrocarbyl groups are each alkyl groups.5. The composition of wherein each aryl group is an unsubstituted phenyl group or is an alkyl-substituted phenyl group or is a heteroatom-substituted phenyl group ...

Lubricating Oil Compositions

A crankcase lubricating oil composition for the crankcase of a spark-ignited or compression-ignited internal combustion engine, comprising a magnesium-containing detergent, in an amount sufficient to provide from 200-4000 ppm magnesium to the lubricating oil composition, in combination with an oil-soluble or oil-dispersible molybdenum compound in an amount sufficient to provide from 600-1500 ppm molybdenum atoms to the lubricating oil composition, and with an oil-soluble or oil-dispersible boron-containing compound in an amount sufficient to provide from 200-600 ppm boron atoms to the lubricating oil composition to improve the friction and fuel economy performance. 1. A crankcase lubricating oil composition comprising or made by admixing:(A) an oil of lubricating viscosity, in a major amount;(B) an oil-soluble or oil-dispersible molybdenum-containing additive, providing from 600-1500 ppm of molybdenum atoms to the lubricating oil composition;(C) a detergent composition comprising one or more magnesium sulfonate detergents in an amount providing from 200 to 4000 ppm magnesium atoms to the lubricating oil composition, measured according to ASTM D5185; and(D) an oil-soluble or oil-dispersible boron-containing compound present in the lubricating oil composition in an amount sufficient to provide from 200-600 ppm boron atoms to the lubricating oil composition, measured according to ASTM D5185.2. A lubricating oil composition according to claim 1 , wherein the detergent composition comprises one or more additional detergent additive selected from magnesium salicylate claim 1 , calcium salicylate claim 1 , calcium sulfonate claim 1 , magnesium phenate claim 1 , calcium phenate claim 1 , and hybrid detergents comprising two or more of these additional detergent additives selected from magnesium salicylate claim 1 , calcium salicylate claim 1 , calcium sulfonate claim 1 , magnesium phenate claim 1 , and calcium phenate.3. A lubricating oil composition according to claim 2 , ...

Lubricating oil compositions containing sterically hindered amines as ashless tbn sources

Hindered amines useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials, and lubricating oil compositions containing such compounds.

Lubricating Oil Compositions

A lubricating oil composition, a method of reducing low-speed pre-ignition (LSPI) in a direct-injected spark-ignited internal combustion engine, and a use of a lubricant composition to reduce LSPI events in such an engine. Preferably, the composition comprises a detergent package comprising a borated calcium detergent, wherein the detergent package provides a calcium content in the composition of at least 0.12 mass %, based on the total mass of the composition, and wherein the borated calcium detergent provides a boron content in the composition of at least 100 ppmm, based on the total mass of the composition. Optionally, the composition comprises a first detergent comprising a calcium detergent, and a second detergent comprising a borated calcium detergent. 1. A lubricating oil composition comprising a first detergent comprising a calcium detergent and a second detergent comprising a borated calcium detergent;wherein, the first and second detergents together provide a calcium content, as measured by ASTM 4951, in the lubricating oil composition of at least 0.12 mass %, based on the total mass of the lubricating oil composition, and wherein the second detergent provides a boron content, as measured by ASTM D5185, in the lubricating oil composition of at least 100 ppmm, based on the total mass of the lubricating oil composition.2. A lubricating oil composition according to claim 1 , wherein the first detergent has a calcium content of from 2 mass % to 16 mass % claim 1 , based on the mass of the first detergent claim 1 , andtor the second detergent has a calcium content of from 4 mass % to 16 mass % claim 1 , based on the mass of the second detergent.3. A lubricating oil composition according to claim 1 , wherein the second detergent has a boron content of from 1 mass % to 10 mass % claim 1 , based on the mass of the second detergent.4. A lubricating oil composition according to claim 1 , wherein the first and second detergents together provide a calcium content in ...

LUBRICATING OIL COMPOSITIONS

A lubricating oil composition, a method of reducing low-speed pre-ignition (LSPI) in a direct-injected spark-ignited internal combustion engine, and a use of a lubricant composition to reduce UPI events in such an engine. Preferably, the composition comprises a detergent package comprising a borated calcium detergent, wherein the detergent package provides a calcium content in the composition of at least 0.12 mass %, based on the total mass of the composition, and wherein the borated calcium detergent provides a boron content in the composition of at least 100 ppmm, based on the total mass of the composition. Optionally, the composition comprises a first detergent comprising a calcium detergent, and a second detergent comprising a borated calcium detergent. 1. A lubricating oil composition comprising a first detergent comprising a calcium detergent and a second detergent comprising a berated calcium detergent; wherein , the first and second detergents together provide a calcium content , as measured by ASTM 4951 , in the lubricating oil composition of at least 0.12 mass % , based on the total mass of the lubricating oil composition , and wherein the second detergent provides a boron content , as measured by ASTM D5185 , in the lubricating oil composition of at least 100 ppmm , based on the total mass of the lubricating oil composition.2. A lubricating oil composition according to claim 1 , wherein the first detergent has a calcium content of from 2 mass % to 16 mass % claim 1 , based on the mass of the first detergent claim 1 , and/or the second detergent has a calcium content of from 4 mass % to 16 mass % claim 1 , based on the mass of the second detergent claim 1 ,3. A lubricating oil composition according to claim 1 , wherein the second detergent has a boron content of from 1 mass % to 10 mass % claim 1 , based on the mass of the second detergent.4. A lubricating oil composition according to claim 1 , wherein the first and second detergents together provide a ...

METHOD FOR LUBRICATING SURFACES

A method of lubricating the contact between a first surface coated with a hydrogenous carbon film or coating of type a-C:H, ta-C:H, a-C:H:Me or a-C:H:X, as classified by VDI-Standard VDI 2840 and a second ferrous, preferably steel surface. The method comprises supplying to said contact a lubricating oil composition comprising a major amount of an oil of lubricating viscosity and (a) an oil-soluble or oil-dispersible molybdenum compound in an amount such as to provide between 150 and 1000 ppm by weight of molybdenum to the lubricating oil composition, and (b) between 0.1 and 5% by weight with respect to the weight of the lubricating oil composition of a polymeric organic friction modifier, the organic friction modifier being the reaction product of (i) a functionalised polyolefin, (ii) a polyether, (iii) a polyol and (iv) a monocarboxylic acid chain terminating group. 1. A method of lubricating the contact between a first surface coated with a hydrogenous carbon film or coating of type a-C:H , ta-C:H , a-C:H:Me or a-C:H:X , as classified by VDI-Standard VDI 2840; and a second , ferrous surface , which method comprises supplying to said contact a lubricating oil composition comprising a major amount of an oil of lubricating viscosity and (a) an oil-soluble or oil-dispersible molybdenum compound in an amount such as to provide between 150 and 1000 ppm by weight of molybdenum to the lubricating oil composition , and (b) between 0.1 and 5% by weight with respect to the weight of the lubricating oil composition of a polymeric organic friction modifier , the organic friction modifier being a reaction product of (i) a functionalised polyolefin , (ii) a polyether , (iii) a polyol and (iv) a monocarboxylic acid chain terminating group.2. The method of wherein the oil-soluble molybdenum compound (a) is present in an amount such as to provide between is present in an amount such as to provide between 300 and 1000 ppm by weight of molybdenum to the lubricating oil composition.3. ...

Cycloalkyl phenylenediamines as deposit control agents for lubricants

The invention is a C5-C12 cycloalkyl substituted phenylenediamine that provides deposit-control lubricant additives for organic materials including lubricating oil, gasoline, and diesel fuels. The invention improves the oxidative stability of the lubricants and fuels by adding cycloalkyl substituted phenylenediamines having one or more additional N-substituents.

Lubricating oil compositions

A lubricating oil composition, a method of reducing low-speed pre-ignition (LSPI) in a direct-injected spark-ignited internal combustion engine, and a use of a lubricant composition to reduce LSPI events in such an engine. Preferably, the composition comprises a detergent package comprising a borated calcium detergent, wherein the detergent package provides a calcium content in the composition of at least 0.12 mass %, based on the total mass of the composition, and wherein the borated calcium detergent provides a boron content in the composition of at least 100 ppmm, based on the total mass of the composition. Optionally, the composition comprises a first detergent comprising a calcium detergent, and a second detergent comprising a borated calcium detergent.

Cycloalkyl phenylenediamines as deposit control agents for lubricants

The invention is a C5-C12 cycloalkyl substituted phenylenediamine that provides deposit-control lubricant additives for organic materials including lubricating oil, gasoline, and diesel fuels. The invention improves the oxidative stability of the lubricants and fuels by adding cycloalkyl substituted phenylenediamines having one or more additional N-substituents.

Cycloalkyl phenylenediamines as deposit control agents for lubricants

The invention is a C 5 -C 12 cycloalkyl substituted phenylenediamine that provides deposit-control lubricant additives for organic materials including lubricating oil, gasoline, and diesel fuels. The invention improves the oxidative stability of the lubricants and fuels by adding cycloalkyl substituted phenylenediamines having one or more additional N-substituents.

Lubricating oil compositions containing sterically hindered amines as ashless tbn sources

Hindered amines useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials, and lubricating oil compositions containing such compounds are described. Such hindered amines are one or more compounds of Formula (I): (see formula I).

Lubricating oil composition

An automotive lubricating oil composition for an internal combustion engine comprises (A) an oil of lubricating viscosity in a major amount; and (B) oil-soluble additive components in respective minor amounts comprising (B1) a zinc dihydrocarbyl dithiophosphate additive; and (B2) an alkylenebis(dihydrocarbyldithiocarbamate) where at least one of the hydrocarbyl groups in an aryl group, the composition having not greater than 1600 ppm by mass of phosphorus, expressed as phosphorus atom.

Trialiphatic phenylene diamines for use in lubricants

Monoaryltrialkyl phenylenediamine compounds useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials and meet copper corrosion requirements, and lubricating oil compositions containing such phenylenediamine compounds.

Lubricating oil compositions containing sterically hindered amines as ashless tbn sources

Hindered amines useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials, and lubricating oil compositions containing such compounds, are disclosed. The lubricating oil composition comprises a major amount of oil of lubricating viscosity and a minor amount of one or more hindered amine compounds of Formula (I): (see formula I)

Lubrication and lubricating oil compositions

Trialiphatic phenylene diamines for use in lubricants

Monoaryltrialkyl phenylenediamine compounds useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials and meet copper corrosion requirements, and lubricating oil compositions containing such phenylenediamine compounds.

Lubricating oil compositions containing sterically hindered amines as ashless TBN sourcces

Hindered amines useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials, and lubricating oil compositions containing such compounds.