Invention Application
- Patent Title: HIGH CONDUCTIVITY LUBRICATING OILS FOR ELECTRIC AND HYBRID VEHICLES
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Application No.: US15725635Application Date: 2017-10-05
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Publication No.: US20180100115A1Publication Date: 2018-04-12
- Inventor: Zhisheng Gao , Luca Salvi , Samuel Flores-Torres
- Applicant: ExxonMobil Research and Engineering Company
- Main IPC: C10M141/10
- IPC: C10M141/10 ; C10M141/08 ; C10M171/02

Abstract:
Provided is a lubricating oil for electric and hybrid vehicles. The lubricating oil has a composition including at least 80 wt % of a lubricating base oil, from 0.8 to 5 wt % of one or more metal detergents, from 0 to 5 wt % of one or more dispersants, from 0 to 1.5 wt % of zinc dialkyldithiophosphate antiwear agent, from 0 to 0.2 wt % of a molybdenum dialkyldithiocarbamate, from 0 to 2 wt % of a viscosity modifier based on active ingredient, and from 0.01 to 5 wt % of other lubricating oil additives. The lubricating oil has an electrical conductivity from 3,000 to 20,000 pS/m, and kinematic viscosity from 2 to 20 cSt at 100° C. This disclosure also relates to methods for producing the lubricating oil, methods for lubricating electric and hybrid vehicles, and methods for controlling electrical conductivity of a lubricating oil by using conductivity promoters and conductivity inhibitors.
Information query
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