润滑科技信息平台

专利摘要

本发明涉及一种适用于电动车辆的润滑剂组合物。该润滑剂组合物包含牵引系数添加剂,并且其中该牵引系数添加剂是酯,所述酯是至少一种具有12至32个碳原子的饱和支链脂族一元醇和至少一种具有以下结构的脂族羧酸的反应产物: 6至32个碳原子。本文所述的润滑剂组合物提供电动车辆齿轮油并在使用时赋予期望的牵引系数特性。 ......

基本信息

专利类型:
发明专利
申请/专利号:
US18/568037
申请日期:
2022-06-08
专利申请人:
分类号:
["C10M129/70","C10M169/04","C10N20/00","C10N20/02","C10N40/04"]
发明/设计人:
MOODY, GARETH JOHN
权利要求: 1. A lubricant composition, comprising a traction coefficient additive and wherein the traction coefficient additive is an ester, said ester being the reaction product of:i) at least one saturated branched-chain aliphatic monohydric alcohol selected from the group consisting of a C12 Guerbet alcohol, C14 Guerbet alcohol, C16 Guerbet alcohol, C18 Guerbet alcohol, C20 Guerbet alcohol, C24 Guerbet alcohol, and mixtures thereof and,ii) at least one saturated aliphatic carboxylic acid having between 6 and 32 carbon atoms.2. (canceled)3. The lubricant composition of claim 1, wherein said at least one aliphatic carboxylic acid is a monocarboxylic acid or dicarboxylic acid, such that said ester is a monoester or a diester.4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. The lubricant composition of claim 3, wherein said traction coefficient additive has a thermal conductivity of higher than 0.131 W/mK at 40° C.9. (canceled)10. The lubricant composition of claim 3, wherein said traction coefficient additive has a kinematic viscosity at 100°° C. of not more than 3.3 cSt.11. The lubricant composition of claim 10, wherein said traction coefficient additive has a kinematic viscosity at 40° C. of not more than 30 cSt.12. (canceled)13. (canceled)14. (canceled)15. The lubricant composition of claim 3, wherein said lubricant composition comprises up to 50 wt % of said traction coefficient additive.16. The lubricant composition of claim 3, wherein said lubricant composition comprises at least 3 wt % of said traction coefficient additive.17. (canceled)18. The lubricant composition of claim 3, wherein said lubricant composition comprises at least one base oil selected from a Group I to Group IV base oil, or mixtures of two or more thereof.19. The lubricant composition of claim 18, comprising at least one of a Group III or Group IV base oil.20. (canceled)21. (canceled)22. (canceled)23. (canceled)24. A gear oil comprising a lubricant composition in accordance with claim 1.25. A method of improving energy efficiency in an electric vehicle, the method comprising using a lubricant composition in accordance with claim 1.26. The method of claim 25, where in the lubricant composition is used in at least one system within the electric vehicles power train, said system selected from axels, differentials, transmissions, battery pack and power electronics.27. The method of claim 26, wherein the lubricant composition is used in the electric vehicle's gearbox.28. (canceled)29. (canceled)30. The lubricant composition of claim 3, which is a monoester and is selected from the group consisting of C16 Guerbet heptanoate, a C20 Guerbet hepanoate, and mixtures thereof.31. A gear oil comprising a lubricant composition in accordance with claim 30.32. A method of improving energy efficiency in an electric vehicle, the method comprising using a lubricant composition in accordance with claim 30.