EGR-EQUIPPED DIESEL ENGINES AND LUBRICATING OIL COMPOSITIONS

PROBLEM TO BE SOLVED: To improve heavy duty diesel (HDD) engines provided with exhaust gas recirculation (EGR) systems.SOLUTION: A heavy duty diesel engine includes an exhaust gas recirculation (EGR) system in which intake air and/or exhaust gas recirculation streams are cooled to below the dew poin...

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Hauptverfasser:	MINOTTI MICHAEL T, FETTERMAN GLEN P, GUTIERREZ ANTONIO, IRVING MATTHEW D, BANSAL JAI G, RITCHIE ANDREW J D, LOCKE CHRISTOPHER J, EMERT JACOB
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMISTRY COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL CRANKCASE VENTILATING ENGINE PLANTS IN GENERAL FUELS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING LUBRICANTS LUBRICATING COMPOSITIONS LUBRICATING INTERNAL COMBUSTION ENGINES LUBRICATING OF MACHINES OR ENGINES IN GENERAL MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY PEAT PETROLEUM, GAS OR COKE INDUSTRIES STEAM ENGINES TECHNICAL GASES CONTAINING CARBON MONOXIDE USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve heavy duty diesel (HDD) engines provided with exhaust gas recirculation (EGR) systems.SOLUTION: A heavy duty diesel engine includes an exhaust gas recirculation (EGR) system in which intake air and/or exhaust gas recirculation streams are cooled to below the dew point for at least 10% of the time when the engine is in operation, the 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 high molecular weight polymers comprising: (i) copolymers of hydrogenated poly(monovinyl aromatic hydrocarbon) and poly (conjugated diene), wherein the hydrogenated poly(monovinyl aromatic hydrocarbon) segment comprises at least about 20% of the copolymer; (ii) specific olefin copolymers; and/or (iii) acrylate or alkylacrylate copolymer derivatives having dispersing groups.