Title:
潤滑油組成物
Document Type and Number:
Japanese Patent JP2012518074
Kind Code:
A
Abstract:
A method for preventing or inhibiting exhaust valve seat recession in a natural gas fueled engine, the method comprising lubricating the engine with a natural gas engine lubricating oil composition comprising (a) a major amount of an oil of lubricating viscosity, and (b) an alkali metal-containing detergent, wherein the natural gas engine lubricating oil composition is substantially free of each of any alkaline earth metal-containing detergents and lithium-containing detergents is disclosed.
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Inventors:
Melanie F Tobias
John F. Von Staden
John F. Von Staden
Application Number:
JP2011551185A
Publication Date:
August 09, 2012
Filing Date:
February 17, 2010
Export Citation:
Assignee:
Chevron Oronite Company LRC
International Classes:
C10M169/04; C10M129/10; C10M129/54; C10M133/16; C10M133/56; C10M135/10; C10M137/10; C10M159/22; C10N10/02; C10N10/04; C10N30/00; C10N40/25
Domestic Patent References:
| JP2007517937A | 2007-07-05 | |||
| JP2001158896A | 2001-06-12 | |||
| JPH05508188A | 1993-11-18 |
Attorney, Agent or Firm:
Yanagawa Yasuo