公开(公告)号：US20180100118A1

公开(公告)日：2018-04-12

申请号：US15725734

申请日：2017-10-05

Applicant: ExxonMobil Research and Engineering Company

Inventor： Samuel Flores-Torres ,  David G.L. Holt ,  James T. Carey

IPC: C10M169/04 ,  C10M171/02

CPC classification number: C10M169/04 ,  C10M171/00 ,  C10M171/02 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2205/0285 ,  C10M2205/173 ,  C10M2205/223 ,  C10M2207/125 ,  C10M2207/126 ,  C10M2207/144 ,  C10M2207/262 ,  C10M2207/2805 ,  C10M2207/282 ,  C10M2215/224 ,  C10M2215/28 ,  C10M2219/044 ,  C10M2223/045 ,  C10M2223/06 ,  C10M2223/10 ,  C10N2210/02 ,  C10N2220/022 ,  C10N2220/04 ,  C10N2230/00 ,  C10N2230/02 ,  C10N2230/10 ,  C10N2230/12 ,  C10N2240/02 ,  C10N2240/04 ,  C10N2240/10 ,  C10N2240/201 ,  C10N2260/14

Abstract: This disclosure relates to a method for minimizing the electrical drainage of charged electrical powertrain components, a method for controlling electrical conductivity over a lifetime of a lubricating oil in an electric vehicle powertrain lubricated with the lubricating oil, and a method for obtaining a desired electrical conductivity-to-dielectric constant ratio of a lubricating oil for an electric vehicle powertrain and powertrain components. The methods relate to controlling at least one of oxidation, deposit formation and corrosion over the service lifetime of the oil. The lubricating oil has a composition including a lubricating base oil as a major component, an additive package, as a minor component, and an effective amount of one or more conductivity agents, as a minor component. The lubricating oil has an electrical conductivity from 10 pS/m to 20,000 pS/m, a dielectric constant of 1.6 to 3.6, with a ratio of electrical conductivity-to-dielectric constant from 5 to 10,000.

公开(公告)号：US20180100120A1

公开(公告)日：2018-04-12

申请号：US15725764

申请日：2017-10-05

Applicant: ExxonMobil Research and Engineering Company

Inventor： Samuel Flores-Torres ,  David G.L. Holt ,  James T. Carey

IPC: C10M169/04 ,  C10M101/02 ,  C10M171/02 ,  B60K6/26 ,  C10G45/58

CPC classification number: C10M169/048 ,  B60K6/26 ,  C10G45/58 ,  C10M101/02 ,  C10M169/04 ,  C10M171/02 ,  C10M2203/06 ,  C10M2203/106 ,  C10N2220/04 ,  C10N2230/43 ,  C10N2240/04 ,  C10N2240/20 ,  C10N2240/201

Abstract: This disclosure relates to a method for preventing or minimizing electrostatic discharge and dielectric breakdown in an electric vehicle powertrain by controlling electrical conductivity over a lifetime of a lubricating oil in an electric vehicle powertrain lubricated with the lubricating oil. The lubricating oil has a composition including a lubricating oil base stock as a major component, and an additive package as a minor component comprising one or more lubricating oil additives, and an effective amount of one or more conductivity agents, as a minor component. The lubricating oil has an electrical conductivity from 10 pS/m to 20,000 pS/m, a dielectric constant of 1.6 to 3.6, with a ratio of electrical conductivity-to-dielectric constant from 1,000 to 10,000. Also provided are methods for obtaining a desired electrical conductivity-to-dielectric constant ratio of a lubricating oil for an electric powertrain and powertrain components and methods for lubricating an electric vehicle powertrain and powertrain components.

公开(公告)号：US20180100115A1

公开(公告)日：2018-04-12

申请号：US15725635

申请日：2017-10-05

Applicant: ExxonMobil Research and Engineering Company

Inventor： Zhisheng Gao ,  Luca Salvi ,  Samuel Flores-Torres

IPC: C10M141/10 ,  C10M141/08 ,  C10M171/02

CPC classification number: C10M141/10 ,  C10M125/24 ,  C10M129/54 ,  C10M135/10 ,  C10M135/18 ,  C10M141/08 ,  C10M167/00 ,  C10M169/04 ,  C10M169/042 ,  C10M169/045 ,  C10M171/00 ,  C10M171/02 ,  C10M2203/065 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2205/0206 ,  C10M2205/028 ,  C10M2205/0285 ,  C10M2205/04 ,  C10M2205/06 ,  C10M2207/125 ,  C10M2207/262 ,  C10M2207/2805 ,  C10M2207/282 ,  C10M2207/2825 ,  C10M2209/084 ,  C10M2215/28 ,  C10M2217/043 ,  C10M2219/046 ,  C10M2219/068 ,  C10M2223/045 ,  C10M2223/06 ,  C10M2223/10 ,  C10N2210/02 ,  C10N2210/06 ,  C10N2220/04 ,  C10N2230/00 ,  C10N2230/02 ,  C10N2230/04 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2230/12 ,  C10N2230/40 ,  C10N2230/43 ,  C10N2230/52 ,  C10N2240/02 ,  C10N2240/04 ,  C10N2240/20 ,  C10N2240/201 ,  C10N2260/14 ,  C10M2207/144 ,  C10M2219/044 ,  C10N2220/022

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.

公开(公告)号：US20180100114A1

公开(公告)日：2018-04-12

申请号：US15725670

申请日：2017-10-05

Applicant: ExxonMobil Research and Engineering Company

Inventor： Zhisheng Gao ,  Luca Salvi ,  Samuel Flores-Torres

IPC: C10M135/10 ,  C10M129/54 ,  C10M125/24 ,  C10M135/18 ,  C10M171/02

CPC classification number: C10M141/10 ,  C10M125/24 ,  C10M129/54 ,  C10M135/10 ,  C10M135/18 ,  C10M141/08 ,  C10M167/00 ,  C10M169/04 ,  C10M169/042 ,  C10M169/045 ,  C10M171/00 ,  C10M171/02 ,  C10M2203/065 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2205/0206 ,  C10M2205/028 ,  C10M2205/0285 ,  C10M2205/04 ,  C10M2205/06 ,  C10M2207/125 ,  C10M2207/262 ,  C10M2207/2805 ,  C10M2207/282 ,  C10M2207/2825 ,  C10M2209/084 ,  C10M2215/28 ,  C10M2217/043 ,  C10M2219/046 ,  C10M2219/068 ,  C10M2223/045 ,  C10M2223/06 ,  C10M2223/10 ,  C10N2210/02 ,  C10N2210/06 ,  C10N2220/04 ,  C10N2230/00 ,  C10N2230/02 ,  C10N2230/04 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2230/12 ,  C10N2230/40 ,  C10N2230/43 ,  C10N2230/52 ,  C10N2240/02 ,  C10N2240/04 ,  C10N2240/20 ,  C10N2240/201 ,  C10N2260/14 ,  C10M2207/144 ,  C10M2219/044 ,  C10N2220/022

Abstract: Provided is a lubricating oil for electric and hybrid vehicles. The lubricating oil includes at least 80 wt % of a lubricating base oil, 0.5 to 5 wt % of one or more dispersants, 0 to 4 wt % of one or more neutral metal detergents, 0 to 1.5 wt % of zinc dialkyldithiophosphate, 0 to 0.2 wt % of molybdenum dialkyldithiocarbamate, 0 to 2 wt % of an active viscosity modifier, and 0.01 to 5 wt % of one or more other lubricating oil additives. The lubricating oil is essentially free of overbased metal detergents. The lubricating oil has an electrical conductivity from 50 to 3,000 pS/m and a 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.

公开(公告)号：US10942161B2

公开(公告)日：2021-03-09

申请号：US16123089

申请日：2018-09-06

Applicant: ExxonMobil Research and Engineering Company

Inventor： Walter D. Vann ,  Kathleen K. Cooper ,  Spyridon Korres ,  Samuel Flores-Torres ,  Bhaskar Prabhakar ,  Erik Herz

IPC: G01N33/28 ,  C10M175/00 ,  G01N21/25 ,  G01N27/60 ,  G01N33/30 ,  C10N30/04 ,  C10N30/00

Abstract: Methods are provided for in-situ detection of varnish and/or deposit precursors in a lubricant in a lubricating environment. An electrostatic accumulator can be used within a lubricating environment to enhance accumulation of varnish and/or deposit precursors on portions of the electrostatic accumulator. The deposits accumulated on the electrostatic accumulator can then be characterized in-situ. The potential difference across portions of the electrostatic accumulator can cause an enhanced rate of deposit accumulation on the electrostatic accumulator, which can facilitate characterization of the tendency of a lubricant to accumulate deposits in the lubricating environment.

公开(公告)号：US20180100117A1

公开(公告)日：2018-04-12

申请号：US15725704

申请日：2017-10-05

Applicant: ExxonMobil Research and Engineering Company

Inventor： Samuel Flores-Torres ,  David G.L. Holt ,  James T. Carey

IPC: C10M169/04 ,  C10M171/02

CPC classification number: C10M141/10 ,  C10M125/24 ,  C10M129/54 ,  C10M135/10 ,  C10M135/18 ,  C10M141/08 ,  C10M167/00 ,  C10M169/04 ,  C10M169/042 ,  C10M169/045 ,  C10M171/00 ,  C10M171/02 ,  C10M2203/065 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2205/0206 ,  C10M2205/028 ,  C10M2205/0285 ,  C10M2205/04 ,  C10M2205/06 ,  C10M2207/125 ,  C10M2207/262 ,  C10M2207/2805 ,  C10M2207/282 ,  C10M2207/2825 ,  C10M2209/084 ,  C10M2215/28 ,  C10M2217/043 ,  C10M2219/046 ,  C10M2219/068 ,  C10M2223/045 ,  C10M2223/06 ,  C10M2223/10 ,  C10N2210/02 ,  C10N2210/06 ,  C10N2220/04 ,  C10N2230/00 ,  C10N2230/02 ,  C10N2230/04 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2230/12 ,  C10N2230/40 ,  C10N2230/43 ,  C10N2230/52 ,  C10N2240/02 ,  C10N2240/04 ,  C10N2240/20 ,  C10N2240/201 ,  C10N2260/14 ,  C10M2207/144 ,  C10M2219/044 ,  C10N2220/022

Abstract: This disclosure relates to a lubricating oil for an electric vehicle powertrain and powertrain components. The lubricating oil has a composition including a lubricating base oil as a major component, an additive package, as a minor component, and an effective amount of one or more conductivity agents, as a minor component. The lubricating oil has an electrical conductivity from about 10 pS/m to about 20,000 pS/m, a dielectric constant of about 1.6 to about 3.6, with a ratio of electrical conductivity-to-dielectric constant from about 5 to about 10,000. This disclosure also relates to methods for producing a lubricating oil for an electric vehicle powertrain and powertrain components.