LUBRICATING OIL COMPOSITION FOR INTERNAL COMBUSTION ENGINE
    3.
    发明公开
    LUBRICATING OIL COMPOSITION FOR INTERNAL COMBUSTION ENGINE 有权
    SCHMIERÖLZUSAMMENSETZUNGFÜRBRENNKRAFTMASCHINEN

    公开(公告)号:EP1829952A4

    公开(公告)日:2009-04-01

    申请号:EP05820374

    申请日:2005-12-21

    申请人: IDEMITSU KOSAN CO

    摘要: A lubricating oil composition which comprises a lube base oil comprising a mineral oil and/or synthetic oil and contains, as (A) an ash-free dispersant, an alkenyl- or alkylsuccinimide and/or a boron compound derivative thereof incorporated in the base oil in an amount of 0.01-0.14 mass% in terms of nitrogen amount based on the composition, the content of the alkenyl- or alkylsuccinic acid monoimide and/or boron compound derivative thereof in the ash-free dispersant being 0.05 mass% or lower in terms of nitrogen amount based on the composition. The composition further contains, as (B) an antioxidant, a dialkyldiphenylamine compound and a hindered phenol compound in amounts of 0.3-5.0 mass% and 0-2.5 mass%, respectively, based on the composition. The composition has (C) a sulfated ash content of 1.2 mass% or lower. The lubricating oil composition has excellent oxidative stability despite the low ash content and increases little in viscosity and acid value. It is suitable for use as a lubricating oil composition for internal combustion engines which is capable of prolonging the lubricating oil changing distance (time).

    摘要翻译: 一种润滑油组合物,其含有作为(A)无灰分散剂的,含有矿物油和/或合成油的润滑油基础油,并入基油中的链烯基或烷基琥珀酰亚胺和/或硼化合物衍生物 相对于组合物的氮量为0.01〜0.14质量%,无灰分散剂中的链烯基或烷基琥珀酸单酰亚胺和/或硼化合物衍生物的含量以质量百分比计为0.05%以下 的基于组成的氮量。 作为(B)抗氧化剂,组合物中还含有0.3〜5.0质量%和0〜2.5质量%的二烷基二苯胺化合物和受阻酚化合物。 (C)硫酸灰分为1.2质量%以下。 尽管灰分含量低,并且粘度和酸值增加很少,但润滑油组合物具有优异的氧化稳定性。 它适合用作能够延长润滑油变化距离(时间)的内燃机润滑油组合物。