发明名称 |
A low-phosphorus lubricating oil composition for extended drain intervals |
摘要 |
The present invention is directed to a lubricating oil composition comprising a major amount of a base oil of lubricating viscosity and a minor amount of each of the following:
a) from about 3.0 to about 7.0 weight percent of an ethylene carbonated-treated ashless dispersant;
b) from about 2.0 to about 5.0 weight percent of a borated-treated ashless dispersant;
€ƒ€ƒ€ƒwherein the weight ratio of a) to b) is about 0.3 to about 0.5;
c) from about 1.0 to about 3.0 weight percent of a high overbased metal-containing detergent;
d) from about 0.1 to about 2.0 weight percent of a phosphorus-containing compound;
€ƒ€ƒ€ƒwherein the weight percent of total phosphorus in the lubricating oil composition is no more than 0.08 weight percent based on the total weight of the lubricating oil composition.
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申请公布号 |
EP1418220(A2) |
申请公布日期 |
2004.05.12 |
申请号 |
EP20030255080 |
申请日期 |
2003.08.15 |
申请人 |
CHEVRON ORONITE COMPANY LLC |
发明人 |
ROBY, STEPHEN H.;RUELAS, SUSANNE G.;MAYER, RICHARD J. |
分类号 |
C10M169/04;C10M133/12;C10M133/56;C10M135/18;C10M137/02;C10M137/06;C10M137/08;C10M137/10;C10M137/14;C10M139/00;C10M159/22;C10M159/24;C10M163/00;C10N30/06;C10N30/08;C10N40/25;(IPC1-7):C10M163/00 |
主分类号 |
C10M169/04 |
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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