Title:
潤滑油組成物
Document Type and Number:
Japanese Patent JP5665771
Kind Code:
B2
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.
Inventors:
メラニー・エフ・トビアス
ジョン・エフ・ヴォン・スターデン
ジョン・エフ・ヴォン・スターデン
Application Number:
JP2011551185A
Publication Date:
February 04, 2015
Filing Date:
February 17, 2010
Export Citation:
Assignee:
シェブロン・オロナイト・カンパニー・エルエルシー
International Classes:
C10M159/20; C10M159/22; C10M159/24; C10M163/00
Attorney, Agent or Firm:
Patent business corporation Asamura patent firm