LUBRICANT COMPOSITIONS FOR HIGH EFFICIENCY ENGINES

• Main Authors: GIESELMAN MATTHEW D, SMITH OLIVER, SZAPPANOS GEORGE S, SAMMUT ALEXANDER, MOSIER PATRICK E, DELBRIDGE EWAN E
• Format: Patent
• Language: Chinese; English
• Published: 30.06.2020
• Subjects: CHEMISTRY; FUELS; LUBRICANTS; LUBRICATING COMPOSITIONS; METALLURGY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

The instant disclosure is directed to a method of lubricating a sump-lubricated, high efficiency, gasoline-fueled internal combustion engine. Said method involves supplying to the engine a lubricatingcomposition comprising an oil of lubricating viscosity, an anti-wear agent, an ashless antioxidant, a metal-containing detergent, an ashless polyolefin dispersant, and (f) a polymeric viscosity modifier. The disclosure further provides a method of operating a high efficiency sump-lubricated gasoline-fueled internal combustion engine while maintaining or improving at least one of durability, deposit control, oxidation control, fuel economy, and resistance to knock and stochastic pre-ignition. 本公开涉及一种润滑油底壳润滑的高效汽油燃料内燃发动机的方法。所述方法涉及向所述发动机提供润滑组合物，所述润滑组合物包含具有润滑粘度的油、抗磨剂、无灰抗氧化剂、含金属清洁剂、无灰聚烯烃分散剂以及(f)聚合物粘度调整剂。本公开还提供一种在维持或改善耐用性、沉积物控制性、氧化控制性、燃料经济性以及抗爆震性和随机提前点火性中的至少一种的同时，运行高效油底壳润滑的汽油燃料内燃发动机的方法。