发明名称 |
Method of lubricating an internal combustion engine and improving the efficiency of the emissions control system of the engine |
摘要 |
Internal combustion engines exhibit improved efficiency of the emissions control system by using a lubricating oil composition of a base oil, an alkali or alkaline earth metal-containing detergent; a metal salt of one or more phosphorus-containing compounds represented by the formula (I), wherein X1 and X2 are independently O or S, and R1 and R2 are independently hydrocarbyl groups, the average total number of carbon atoms in R1 and R2 for the one or more phosphorus-containing compounds being at least 10.4; and an acylated nitrogen-containing compound having at least about 10 alphatic carbon atoms and a TBN of at least about 2; the lubricating oil composition being characterized by a phosphorus concentration of up to about 0.12% by weight and the substantial absence of copper, thereby generating a lean-phosphorus containing exhaust gas.
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申请公布号 |
US7462583(B2) |
申请公布日期 |
2008.12.09 |
申请号 |
US20040517046 |
申请日期 |
2004.12.03 |
申请人 |
THE LUBRIZOL CORPORATION |
发明人 |
WILK MELODY A.;CHAMBERLIN, III WILLIAM B.;KELLEY JACK C.;ABRAHAM WILLIAM D. |
分类号 |
C10M137/10;C10M101/02;C10M105/04;C10M107/02;C10M129/10;C10M129/50;C10M129/52;C10M129/54;C10M129/92;C10M133/56;C10M135/10;C10M135/12;C10M137/06;C10M157/08;C10M159/12;C10M159/20;C10M159/22;C10M159/24;C10M163/00;C10M169/04;C10N10/02;C10N10/04;C10N20/00;C10N30/04;C10N40/25 |
主分类号 |
C10M137/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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