METHOD FOR IMPROVING ENGINE FUEL EFFICIENCY
    2.
    发明申请
    METHOD FOR IMPROVING ENGINE FUEL EFFICIENCY 审中-公开
    改善发动机燃油效率的方法

    公开(公告)号:US20130137617A1

    公开(公告)日:2013-05-30

    申请号:US13675463

    申请日:2012-11-13

    Abstract: A method for improving fuel efficiency, while maintaining or improving wear protection, in an engine lubricated with a lubricating oil by using as the lubricating oil a formulated oil having a HTHS viscosity of less than 2.6 cP at 150° C. In one form, the formulated oil has a composition that includes a lubricating oil base stock as a major component, and zinc dialkyl dithio phosphate, a mixture of (i) at least two alkali metal detergents, (ii) at least two alkaline earth metal detergents, or (iii) one or more alkali metal detergents and one or more alkaline earth metal detergents; and a viscosity index improver, as minor components. The lubricating oil has a HTHS viscosity of less than 2.6 cP at 150° C. The composition contains less than 2 weight percent of the viscosity index improver, based on the total weight of the formulated oil or lubricating engine oil.

    Abstract translation: 通过在150℃下使用具有小于2.6cP的HTHS粘度的配制油,在用润滑油润滑的发动机中,在保持或改进耐磨性的同时,提高燃料效率的方法。在一种形式中, 配制油具有包含润滑油基础油料作为主要成分的组合物和二烷基二硫代磷酸锌,(i)至少两种碱金属洗涤剂,(ii)至少两种碱土金属洗涤剂或(iii) )一种或多种碱金属洗涤剂和一种或多种碱土金属洗涤剂; 和粘度指数改进剂,作为次要组分。 润滑油在150℃下的HTHS粘度小于2.6cP。基于配制的油或润滑发动机油的总重量,组合物含有小于2重量%的粘度指数改进剂。

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