发明授权
- 专利标题: Fuel compositions for lessening valve seat recession
- 专利标题(中): 用于减轻阀座凹陷的燃料组合物
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申请号: US766615申请日: 1985-08-16
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公开(公告)号: US4659338A公开(公告)日: 1987-04-21
- 发明人: Thomas E. Johnston , Casper J. Dorer, Jr.
- 申请人: Thomas E. Johnston , Casper J. Dorer, Jr.
- 申请人地址: OH Wickliffe
- 专利权人: The Lubrizol Corporation
- 当前专利权人: The Lubrizol Corporation
- 当前专利权人地址: OH Wickliffe
- 主分类号: C10L1/14
- IPC分类号: C10L1/14 ; C10L1/16 ; C10L1/18 ; C10L1/20 ; C10L1/22 ; C10L1/24 ; C10L1/26 ; C10L1/28 ; C10L1/30
摘要:
A fuel composition for internal combustion engines, and more particularly, a fuel composition for internal combustion engines containing less than about 0.5 gram of lead per liter of fuel is described. The fuel composition comprises a major amount of a liquid hydrocarbon fuel and a minor, property improving amount of(A) at least one hydrocarbon-soluble alkali or alkaline earth metal-containing composition, and(B) at least one hydrocarbon-soluble ashless dispersant.When a mixture of the metal-containing composition (A) and the ashless dispersant (B) are incorporated into gasolines containing less than about 0.5 gram of lead per liter of fuel, the treated fuel exhibits improved stability and water tolerance, and when the unleaded or low lead-containing fuels of the present invention are utilized in internal combustion engines, there is a significant reduction in valve seat recession. Methods of reducing valve seat recession in internal combustion engines utilizing lead free or low lead-containing fuels also are described.
公开/授权文献
- US5832403A Air flow measuring apparatus and method thereof 公开/授权日:1998-11-03