申请人:Chevron Oronite Technology B.V.
公开号:EP2402421A2
公开(公告)日:2012-01-04
A trunk piston engine lubricating oil composition is disclosed comprising (a) a major amount of a base stock containing at least 90% by weight saturated hydrocarbons; and (b) a base stock selected from the group consisting of (i) an ester base stock wherein the ester base stock is present in an amount greater than 10% by weight and no greater than about 45% by weight, based on the total weight of the lubricating oil composition, (ii) an alkylated aromatic base stock, (iii) a base stock having an aromatic content of at least about 50% by weight wherein the base stock having an aromatic content of at least about 50% by weight is not an aromatic extract, and mixtures thereof.
本发明公开了一种干式活塞发动机润滑油组合物,其中包括 (a) 主要量的基础油,按重量计至少含有 90% 的饱和碳氢化合物;(b) 选自以下组别的基础油:(i) 酯类基础油,其中酯类基础油的含量按润滑油组合物总重量计大于 10%(重量)但不大于约 45%(重量);(ii) 烷基化芳香族基础油;(iii) 芳香族含量至少约为 50%(重量)的基础油,其中芳香族含量至少约为 50%(重量)的基础油不是芳香族萃取物,以及它们的混合物。