LUBRICATING OIL COMPOSITION FOR INTERNAL COMBUSTION ENGINE
    3.
    发明申请
    LUBRICATING OIL COMPOSITION FOR INTERNAL COMBUSTION ENGINE 审中-公开
    内燃机用润滑油组合物

    公开(公告)号:US20150210954A1

    公开(公告)日:2015-07-30

    申请号:US14414126

    申请日:2013-07-02

    发明人: Hiroya Miyamoto

    IPC分类号: C10M161/00

    摘要: A lubricating oil composition is provided as an engine oil for an internal combustion engine employing heat management. The composition includes (A) a base oil having 100° C. kinematic viscosity of 3.0 to 5.0 mm2/s, (B) a boronated succinimide in an amount of 0.007 mass percent or more as boron and in an amount of 5 mass percent or less as the succinimide ashless dispersant, based on total mass of the composition, (C) a phenol-based antioxidant in an amount of 0.5 mass percent or more, and (D) a viscosity index improver having a ratio of weight average molecular weight and PSSI of 1.2×104 or greater in an amount of 0.1 to 5 percent by mass. The composition has a 150° C. HTHS viscosity of 2.0 to 2.8 mPa·s, a 100° C. HTHS viscosity of 4.8 mPa·s or lower and a viscosity index of 180 or greater.

    摘要翻译: 提供了一种润滑油组合物作为采用热管理的内燃机的发动机油。 该组合物包含(A)100℃的运动粘度为3.0〜5.0mm 2 / s的基油,(B)硼的0.007质量%以上的硼化琥珀酰亚胺和5质量%的量, 少于琥珀酰亚胺无灰分散剂,基于组合物的总质量,(C)0.5质量%以上的酚类抗氧化剂,和(D)粘均指数改进剂,其重均分子量与 1.2×10 4以上的PSSI为0.1〜5质量%。 该组合物的HTHS粘度为2.0〜2.8mPa·s,100℃的HTHS粘度为4.8mPa·s以下,粘度指数为180以上。