HIGH CONDUCTIVITY LUBRICATING OILS FOR ELECTRIC AND HYBRID VEHICLES
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
Patent Agency Ranking
0/0