首页> 外国专利> OIL COMPOSITION FOR LUBRICATING AN EGR EQUIPPED DIESEL ENGINE AND AN EGR EQUIPPED DIESEL ENGINE COMPRISING SAME.

OIL COMPOSITION FOR LUBRICATING AN EGR EQUIPPED DIESEL ENGINE AND AN EGR EQUIPPED DIESEL ENGINE COMPRISING SAME.

机译:用于润滑包含相同EGR的柴油机和包含EGR的柴油机的机油组成。

摘要

The present invention is directed to a lubricating oil composition, a diesel engine comprising a lubricating oil composition, and a method of lubricating a diesel engine provided with an exhaust gas recirculation system, comprising lubricating said engine with a lubricating oil composition comprising an oil of lubricating viscosity, and a polymeric N-dispersant booster comprising monomer units of: a) 0 to 40 wt.% of one or more ethylenically unsaturated ester compounds of formula (I), wherein R is equal to H or CHsub3/sub, Rsup1/sup represents a linear or branched alkyl group with 1 to 5 carbon atoms, Rsup2/sup and Rsup3/sup independently represent H or a group of the formula -COOR', wherein R' is H or an alkyl group with 1 to 5 carbon atoms, b) 10 to 98 wt.% of one or more ethylenically unsaturated ester compounds of formula (II), wherein R is equal to H or CHsub3/sub, Rsup4/sup represents a linear or branched alkyl group with 6 to 15 carbon atoms, Rsup5/sup and Rsup6/sup independently represent H or a group of the formula -COOR", wherein R" is H or an alkyl group with 6 to 15 carbon atoms, c) 0 to 30 wt.% of one or more ethylenically unsaturated ester compounds of formula (III), wherein R is equal to H or CHsub3/sub, Rsup7/sup represents a linear or branched alkyl group with 16 to 30 carbon atoms, Rsup8/supand Rsup9/sup independently represent H or a group of the formula -COOR"', wherein R"' is H or an alkyl group with 16 to 30 carbon atoms, d) 0 to 30 wt.% vinyl monomers, e) 7 to 25 wt.% of at least one N- dispersant monomer, wherein a) - e) add up to 100 wt.%.
机译:本发明涉及润滑油组合物,包括该润滑油组合物的柴油发动机,以及对具有排气再循环系统的柴油发动机进行润滑的方法,该方法包括用包含润滑油的润滑油组合物润滑所述发动机。粘度N和聚合物N-分散助剂,其包含以下单体单元:a)0至40 wt。%的一种或多种式(I)的烯键式不饱和酯化合物,其中R等于H或CH 3 ,R 1 表示具有1至5个碳原子的直链或支链烷基,R 2 和R 3 分别表示H或a式-COOR'的基团,其中R'是H或具有1-5个碳原子的烷基,b)10-98重量%的一种或多种式(II)的烯键式不饱和酯化合物,其中R等于对于H或CH 3 ,R 4 表示具有6至15个碳原子的直链或支链烷基,R 5 和R 6 独立地代表H或式-COOR“的基团,其中R”是H或具有6至15个碳原子的烷基,c)0至30重量%的一个或更多个式(III)的烯键式不饱和酯化合物,其中R等于H或CH 3 ,R 7 表示具有16至30个碳的直链或支链烷基原子R 8 和R 9 独立地表示H或式-COOR“'的基团,其中R”'为H或碳数为16至30的烷基原子,d)0至30重量%的乙烯基单体,e)7至25重量%的至少一种N-分散剂单体,其中a)-e)总计为100重量%。

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