发明申请
- 专利标题： Method of Viscosity Control
- 专利标题（中）： 粘度控制方法
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申请号： US12773150申请日： 2010-05-04
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公开(公告)号： US20100212624A1公开(公告)日： 2010-08-26
- 发明人: Lewis D. Breon , Jayram D. Patel , Roy Sambuchino , Mark F. Wilkes , Simon J. Griffiths , David Price , Michael P. Gahagan
- 申请人： Lewis D. Breon , Jayram D. Patel , Roy Sambuchino , Mark F. Wilkes , Simon J. Griffiths , David Price , Michael P. Gahagan
- 主分类号： F01M1/02
- IPC分类号： F01M1/02
摘要：
This invention relates to a method of lubricating an internal combustion engine comprising at least one of a crankcase, a gear and a wet-clutch, said method comprising supplying to said crankcase, gear and wet-clutch a lubricating composition comprising: (a) an oil of lubricating viscosity; and (b) a viscosity modifier with a number average molecular weight from 1000 to 75,000, wherein the lubricating composition has a SAE viscosity grade from XW-Y, wherein X is from 0 to 20 and Y is from 20 to 50; and wherein the lubricating composition has a phosphorus content from a metal hydrocarbyl dithiophosphate of 0.12 wt % or less.