CYLINDER-LUBRICANT COMPOSITION FOR CROSSHEAD DIESEL ENGINE
    6.
    发明公开
    CYLINDER-LUBRICANT COMPOSITION FOR CROSSHEAD DIESEL ENGINE 审中-公开
    ZYLINDERSCHMIERMITTELZUSAMMENSETZUNGFÜREINEN KREUZKOPF-DIESELMOTOR

    公开(公告)号:EP2762555A1

    公开(公告)日:2014-08-06

    申请号:EP12834993.3

    申请日:2012-03-08

    Abstract: The present invention relates to a cylinder lubricating oil for crosshead diesel engines. In addition to having conventional characteristics such as heat resistance, cleanliness, wear resistance, and the like, the cylinder lubricating oil can be used with fuel of any sulfur content and suppresses the amount of piston deposit even when the base number is excessive. In greater detail, the present invention relates to a cylinder lubricating oil composition which includes an ashless dispersant (B) and a metallic detergent (C) in a lubricant base oil (A), in which the product of the number average molecular weight, the content, and the effective concentration of the ashless dispersant (B) is at least 9000, and the endothermic peak temperature of the metallic detergent (C) as measured by DSC at a rate of temperature increase of 50°C/min is at most 460°C.

    Abstract translation: 本发明涉及一种十字头柴油发动机的汽缸润滑油。 除了具有耐热性,清洁度,耐磨性等常规特性之外,气缸润滑油可以与任何硫含量的燃料一起使用,并且即使当基数过大时也能抑制活塞沉积量。 更详细地说,本发明涉及一种在润滑油基础油(A)中包含无灰分散剂(B)和金属洗涤剂(C))的汽缸润滑油组合物,其中数均分子量, 含量,无灰分散剂(B)的有效浓度为9000以上,通过DSC以50℃/分钟的升温速度测定的金属洗涤剂(C)的吸热峰温度为460以下 C。

    Marine engine lubrication
    8.
    发明公开
    Marine engine lubrication 有权
    船用发动机润滑

    公开(公告)号:EP2735603A1

    公开(公告)日:2014-05-28

    申请号:EP13188944.6

    申请日:2013-10-16

    Abstract: Trunk piston marine engine lubrication comprising a major amount of (A) an oil of lubricating viscosity that comprises an oil-soluble ester basestock, or that comprises greater than 0.1 to less than 90 mass % of an oil-soluble ester basestock and, as 50 mass % or more of the remainder of the oil of lubricating viscosity, a high saturates basestock; (B) a minor amount of a metal alkyl salicylate detergent; and (C) greater than 0.1 to less than 10 mass %, of an oil-soluble polyalkenyl-substituted carboxylic acid anhydride, wherein the or at least one polyalkenyl group is derived from a polyalkene having a number average molecular weight of from 200 to 3,000. Asphaltene precipitation in the lubricant composition, caused by the presence of contaminant heavy fuel oil, is prevented or inhibited.

    Abstract translation: 主干活塞船用发动机润滑剂包括主要量的(A)润滑粘度的油,其包含油溶性酯基本油料,或者包含大于0.1至小于90质量%的油溶性酯基本油料和作为50 质量%或更多的润滑粘度油的剩余部分,高饱和基本油料; (B)少量的烷基水杨酸金属盐清净剂; 和(C)大于0.1至小于10质量%的油溶性聚烯基取代的羧酸酐,其中所述或至少一个聚烯基衍生自数均分子量为200至3,000的聚烯烃 。 防止或抑制由污染物重质燃料油的存在引起的润滑剂组合物中的沥青质沉淀。

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