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公开(公告)号:US20190233758A1
公开(公告)日:2019-08-01
申请号:US16341195
申请日:2017-10-18
发明人: Shigeki TAKESHIMA
IPC分类号: C10M169/04 , C10M101/02 , C10M129/54 , C10M135/10 , C10M137/02 , C10M133/12 , C10M139/00
CPC分类号: C10M169/04 , C10M101/02 , C10M129/26 , C10M129/54 , C10M133/12 , C10M135/10 , C10M137/02 , C10M139/00 , C10M159/20 , C10M159/24 , C10M171/00 , C10M2203/1025 , C10M2207/144 , C10M2215/064 , C10M2219/044 , C10M2223/02 , C10M2227/09 , C10N2210/02 , C10N2220/022 , C10N2230/04 , C10N2230/06 , C10N2230/10 , C10N2240/104
摘要: A method for lubricating an internal combustion engine, the method including: supplying a lubricating oil composition to a cylinder of an internal combustion engine, wherein the internal combustion engine has a mean effective pressure of no less than 1.3 MPa, wherein an integrated intensity ratio of peaks of CaO in a X-ray diffraction spectrum of an ash is no more than 16.5%, the ash being obtained by incinerating the lubricating oil composition in an air at 950° C.
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公开(公告)号:US20180346842A1
公开(公告)日:2018-12-06
申请号:US15761681
申请日:2016-09-27
发明人: Shigeki TAKESHIMA
IPC分类号: C10M163/00 , C10M171/04
CPC分类号: C10M163/00 , C10M133/06 , C10M133/12 , C10M133/16 , C10M133/56 , C10M135/04 , C10M135/06 , C10M135/18 , C10M135/20 , C10M135/36 , C10M137/10 , C10M139/00 , C10M159/18 , C10M159/22 , C10M159/24 , C10M171/00
摘要: (1) A cylinder lubricating oil composition for a crosshead diesel engine, the composition having a sulfated ash content of 2.0 to 5.5 mass %; a base number of 15 to 45 mgKOH/g; and an autoignition temperature of no less than 262° C. (2) A cylinder lubricating oil composition for a crosshead diesel engine, comprising: a lubricant base oil; (B) a Ca sulfonate detergent having a base number of no less than 10 mgKOH/g and less than 60 mgKOH/g; (C) a Ca phenate detergent having a base number of 55 to 200 mgKOH/g; (D′) an amine antioxidant; and (E′) a zinc dithiophosphate, wherein the composition has a base number of no less than 15 mgKOH/g and less than 120 mgKOH/g.
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3.
公开(公告)号:US20170321141A1
公开(公告)日:2017-11-09
申请号:US15523080
申请日:2015-11-18
发明人: Shigeki TAKESHIMA
IPC分类号: C10M101/02 , C10M169/04
CPC分类号: C10M101/02 , C10M169/042 , C10M169/047 , C10M169/048 , C10M2203/1006 , C10M2207/024 , C10M2207/028 , C10M2207/262 , C10M2207/281 , C10M2207/289 , C10M2209/103 , C10M2209/104 , C10M2209/105 , C10M2215/245 , C10M2215/28 , C10M2219/046 , C10M2219/089 , C10N2230/02 , C10N2230/041 , C10N2230/24 , C10N2230/52 , C10N2240/102 , C10N2240/103 , C10N2210/02 , C10N2220/021 , C10N2260/14 , C10M2209/108
摘要: A cylinder lubricating oil composition for a crosshead diesel engine equipped with a scrubber, including: a base oil; and (A) a metallic detergent, wherein the composition has a base number of 15 to 125 mgKOH/g, and a kinematic viscosity at 100° C. of 10 to 30 mm2/s; and the composition satisfies the requirement (i) or (ii): (i) the composition includes: (B) 0.02 to 5.0 mass % of a demulsifier; (ii) the composition includes, as the component (A), (A1) a Ca phenate detergent; and (A2) a metallic detergent other than Ca phenate; the composition optionally includes (C-1′) 0.015 mass % or less in terms of nitrogen of a succinimide dispersant or a borated derivative thereof; and the Ph value of the formula (1) is 20×10−3 or less: Ph value=CCa×2/(rM×40.08) (1) wherein CCa represents calcium content (mass %) derived from the component (A1), and rM represents a metal ratio of the component (A1).
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