FUEL-EFFICIENT ENGINE OIL COMPOSITION
    3.
    发明申请
    FUEL-EFFICIENT ENGINE OIL COMPOSITION 审中-公开
    燃油效率发动机油组成

    公开(公告)号:US20160083669A1

    公开(公告)日:2016-03-24

    申请号:US14779686

    申请日:2014-02-04

    Inventor: Satoru YOSHIDA

    Abstract: The present invention provides am engine oil composition with excellent fuel saving properties, which comprises a lubricating base oil with a saturate content of 70 percent by mass or more and a viscosity index of 90 or greater and a star polymer as a viscosity index improver in an amount of at least 4 percent by mass or more on the basis of the total mass of the engine oil composition, the ratio (B/A) of (B) the high temperature high shear viscosity at 1×107/s shear rate and 100° C. to (A) the high temperature high shear viscosity at 1×106/s shear rate and 100° C. being 0.85 or less.

    Abstract translation: 本发明提供具有优异的节省燃料的发动机油组合物,其包含饱和物含量为70质量%以上,粘度指数为90以上的润滑油基油和作为粘度指数改进剂的星形聚合物 基于发动机油组成的总质量为至少4质量%以上的量,(B)在1×107 / s剪切速率下的高温高剪切粘度与100倍的比例(B / A) ℃至(A)1×106 / s剪切速率和100℃下的高温高剪切粘度为0.85以下。

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