润滑科技信息平台

专利摘要

本发明公开了一种用于具有滚子从动件型气门机构的内燃机的润滑油组合物。该组合物包含主要量的润滑粘度的油; 一种或多种镁清净剂,其量为润滑油组合物提供100至1000ppm的镁; 0.1至0.5重量%的有机摩擦改进剂; 和d)任选存在的粘度调节剂不超过0.5重量%。该组合物基本上不含钼摩擦改进剂并且具有20至200ppm的总硼含量。 ......

基本信息

专利类型:
发明专利
申请/专利号:
SG11202405721W
申请日期:
2023-03-20
专利申请人:
雪佛龙日本有限公司
分类号:
["C10M167/00","C10N10/04","C10N30/02","C10N30/00","C10N40/25","C10N60/02"]
发明/设计人:
ONOUCHI, HISANARI ， TANAKA, ISAO
权利要求: CLAIMS1. A lubricating oil composition for internal combustion engine with a roller follower type valvetrain, comprising: a) major amount of an oil of lubricating viscosity; b) one or more magnesium detergents in an amount to provide 100 to 1000 ppm of magnesium to the lubricating oil composition; c) 0.1 to 0.5 wt% of organic friction modifier; and d) optionally a viscosity modifier present at no more 0.5 wt% wherein the lubricating oil composition is substantially free of molybdenum friction modifier and has a total boron content ranging from 20 to 200 ppm.2. The lubricating oil composition of claim 1, wherein the oil of lubricating viscosity is a group III base oil having a kinematic viscosity at 100°C ranging from 4 cSt to 4.5 cSt.3. The lubricating oil composition of claim 1, where the organic friction modifier is glycerol monooleate or borated glycerol monooleate.4. The lubricating oil composition of claim 2, wherein the viscosity modifier is a non-dispersant comb polymethacrylate, linear polymethacrylate, olefin copolymer, or hydrogenated styrene-diene type copolymer.5. The lubricating oil composition of claim 1, further comprising a dispersant.6. The lubricating oil composition of claim 5, wherein the dispersant is borated or non-borated.7. The lubricating oil composition of claim 5, wherein the dispersant is a succinimide dispersant.8. A method of improving fuel efficiency of an internal combustion engine, wherein the method comprises: lubricating the internal combustion engine with a lubricating oil composition comprising: a) major amount of an oil of lubricating viscosity; b) one or more magnesium detergent in an amount to provide 100 to 1000 ppm of magnesium to the lubricating oil composition; c) 0.1 to 0.5 wt% of organic friction modifier; and d) optionally a viscosity modifier present at no more 0.5 wt%; wherein the lubricating oil composition is substantially free of molybdenum friction modifier and has a total boron content ranging from 20 to 200 ppm.9. The method of claim 8, wherein the oil of lubricating viscosity is a group III base oil having a kinematic viscosity at 100°C ranging from 4 cSt to 4.5 cSt.10. The method of claim 8, where the organic friction modifier is glycerol monooleate or borated glycerol monooleate.11. The method of claim 8, wherein the viscosity modifier is a non-dispersant comb polymethacrylate, linear polymethacrylate, olefin copolymer, or hydrogenated styrene-diene type copolymer.12. The method of claim 8 wherein the internal combustion engine includes roller follower type valvetrain.13. The method of claim 8, wherein the lubricating oil composition further comprises a dispersant.14. The method of claim 13, wherein the dispersant is borated or non-borated.15. The method of claim 15, wherein the dispersant is a succinimide dispersant.