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Lubricating composition for motorcycle applications

专利摘要

The present disclosure relates to lubricating compositions and, in particular, lubricating compositions suitable for motorcycle applications including select metal dihydrocarbyl dithiophosphates to achieve low copper corrosion, good TBN retention, and good sulfur retention applicable to motorcycle engines and transmissions. ......

基本信息

专利类型:
发明专利
申请/专利号:
US17/935808
申请日期:
2022-09-27
专利申请人:
雅富顿公司
分类号:
["C10M137/10","C10M125/22","C10M129/00","C10M169/04"]
发明/设计人:
EDWARDS, DAVID ， HOSHINO, HIDETAKA ， CARPENTIER, GUILLAUME
权利要求: 1-15. (canceled)16. A method of lubricating a motorcycle engine, transmission, and clutch assembly with a lubricating composition, the method comprisinglubricating the motorcycle engine, the transmission, and the clutch assembly with a lubricating composition provided from a common lubricant reservoir; andthe lubricating composition including one or more base oils of lubricating viscosity; a minor amount of an additive package including a metal containing sulfonate, salicylate, and/or phenate detergent; a dispersant providing at least about 400 ppm nitrogen; at least one aminic antioxidant, wherein the lubricating composition includes up to about 1 weight percent of the aminic antioxidant; and one or more metal dihydrocarbyl dithiophosphate compounds; wherein the one or more metal dihydrocarbyl dithiophosphate compounds provide at least about 800 ppm phosphorus to the motorcycle lubricating composition; and wherein the one or more metal dihydrocarbyl dithiophosphate compounds have, on average, at least 16 total carbons per phosphorus atom, and wherein the hydrocarbyl groups thereof are derived from at least about 100 mol percent linear or branched primary alcohols; and wherein the lubricating composition is free of amide friction modifiers; andwherein the lubricating composition exhibits no more than about 90 ppm of copper leaching, a TBN retention of about 10 to about 25 percent, and a sulfur retention of at least about 95 percent when measured pursuant to the Indiana Stirred Oxidization Test (ISOT) run under the JIS K2514 testing standard.17-19. (canceled)20. The method of claim 16, wherein the metal dihydrocarbyl dithiophosphate compound has a structure of Formula I:wherein each R is independently a linear or branched C8 to C16 hydrocarbyl group and A is a metal selected from aluminum, lead, tin, molybdenum, manganese, nickel, copper, titanium, tungsten, zirconium, or zinc.21. The method of claim 20, wherein each R is a linear or branched C8 to C10 hydrocarbyl group and derived predominately from primary alcohols.22. The method of claim 20, wherein A is zinc and wherein each R has about 100 mol percent of the hydrocarbyl groups derived from C8 to C10 primary alcohols.23. The method of claim 16, wherein the one or more metal dihydrocarbyl dithiophosphate compound provides up to about 3,000 ppm phosphorus to the lubricating composition.24. The method of claim 16, wherein the lubricating composition has a viscosity of about 6 to about 12 cSt.