公开(公告)号：US20210325360A1

公开(公告)日：2021-10-21

申请号：US16852391

申请日：2020-04-17

Applicant: ExxonMobil Research and Engineering Company

Inventor： Lin Wang ,  David G.L. Holt ,  Pilanda Watkins-Curry

IPC: G01N33/28 ,  G01N13/02

Abstract: Provided is a method for determining air release performance of a lubricating oil. The method involves determining air release time of the lubricating oil in accordance with ASTM D3427 at a designated temperature; determining surface tension of the lubricating oil at the temperature used in ASTM D3427; determining kinematic viscosity of the lubricating oil in accordance with ASTM D445 at the temperature used in ASTM 3427; and utilizing the surface tension, ASTM D3427 air release time, and ASTM D445 kinematic viscosity to determine air release performance of the lubricating oil. Surface tension is correlated with ASTM D3427 air release time at an ASTM D445 kinematic viscosity of at least about 30 cSt. The method has higher measurement sensitivity and reproducibility/repeatability than ASTM D3427.

公开(公告)号：US20210189283A1

公开(公告)日：2021-06-24

申请号：US17119015

申请日：2020-12-11

Applicant: ExxonMobil Research and Engineering Company

Inventor： Lin Wang ,  David G.L. Holt

IPC: C10M169/04 ,  C10M155/02 ,  C10M145/14 ,  C10M157/10

Abstract: This disclosure relates to a method for improving air release and water separation in a lubricating oil. The method involves formulating a composition comprising at least one lubricating oil base stock as a major component, and one or more lubricating oil additives, as a minor component. The one or more lubricating oil additives include a mixture of antifoam agents. The mixture of antifoam agents includes at least one polysiloxane and at least one acrylate polymer. During operation of a lubricating system containing the lubricating oil, release of entrained air in the lubricating oil is improved, as determined by ASTM D-3427-15, and water separation from the lubricating oil is improved, as determined by ASTM D-1401-18b, as compared to release of entrained air and water separation achieved using a lubricating oil containing other than the mixture of antifoam agents. This disclosure also relates to lubricating oils having a mixture of antifoam agents including at least one polysiloxane and at least one acrylate polymer.

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：US20180112149A1

公开(公告)日：2018-04-26

申请号：US15703117

申请日：2017-09-13

Applicant: ExxonMobil Research and Engineering Company

Inventor： Nancy Ortiz ,  Douglas E. Deckman ,  Kevin J. Kelly ,  David G.L. Holt ,  Haris Junuzovic ,  Camille A. Killian

IPC: C10M169/04 ,  C10M101/00 ,  C10M135/22 ,  C10M129/95 ,  C10M143/12 ,  C10M161/00

Abstract: Provided is a non-Newtonian engine oil lubricant composition with improved fuel efficiency and engine wear protection. The lubricant composition includes a major amount of a base oil including a Group II base stock and an optional Group V base stock, from 0.1 to 9.0 wt. % of at least one viscosity modifier and from 0.1 to 1.2 wt. % of at least one friction modifier. The non-Newtonian engine oil lubricant composition has a kinematic viscosity at 100 deg. C. of less than or equal to 10 cSt and an HTHS (ASTM D4683) of less than or equal to 2.2 cP at 150° C. Also provided are methods of using the lubricant composition in internal combustion engines and methods of making the lubricant composition.

公开(公告)号：US20170158981A1

公开(公告)日：2017-06-08

申请号：US15352017

申请日：2016-11-15

Applicant: ExxonMobil Research and Engineering Company

Inventor： Liehpao Oscar Farng ,  John T. Fogarty ,  David G.L. Holt ,  Susan C. Ardito ,  Andrew G. Horodysky

IPC: C10M135/10 ,  C10M125/24 ,  C23F11/04 ,  C10M107/48

CPC classification number: C10M135/10 ,  C10M107/48 ,  C10M125/24 ,  C10M169/04 ,  C10M2201/081 ,  C10M2201/085 ,  C10M2201/087 ,  C10M2219/044 ,  C10M2223/0405 ,  C10M2223/0415 ,  C10N2210/01 ,  C10N2210/02 ,  C10N2210/05 ,  C10N2230/00 ,  C10N2230/02 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2230/12 ,  C10N2230/18 ,  C10N2240/08 ,  C23F11/04

Abstract: A functional fluid composition containing a fluid base stock (e.g., a phosphate ester fluid base stock) as a major component, and an erosion inhibitor mixture as a minor component. The erosion inhibitor mixture contains at least a first erosion inhibitor (e.g., a perhalometallate or perhalometalloidate salt) and a second erosion inhibitor (e.g., an alkali metal salt of perfluoroalkyl sulfonic acid). Erosion inhibition of the functional fluid composition is improved as compared to erosion inhibition achieved using singly the first erosion inhibitor or the second erosion inhibitor, as measured by one or more of ASTM D2624, ASTM D974, ASTM D130 and ASTM D6304. A method for operating and lubricating a hydraulic system by utilizing as a hydraulic fluid, the functional fluid composition. A method for identifying erosion inhibition effectiveness of the functional fluid. The functional fluids are useful as aircraft hydraulic fluids.

公开(公告)号：US20210189282A1

公开(公告)日：2021-06-24

申请号：US17122221

申请日：2020-12-15

Applicant: ExxonMobil Research and Engineering Company

Inventor： Lin Wang ,  David G.L. Holt ,  David A. Racke

IPC: C10M145/34 ,  C10M111/04

Abstract: This disclosure relates to a method for improving air release in a lubricating oil. The method involves formulating a composition having at least one lubricating oil base stock as a major component, and one or more lubricating oil additives, as a minor component. The one or more lubricating oil additives include at least one polyalkylene glycol. The at least one polyalkylene glycol is soluble in the at least one lubricating oil base stock. The weight ratio of the at least one polyalkylene glycol to the at least one lubricating oil base stock is from about 1:99 to about 7:93. During operation of a lubricating system containing the lubricating oil, release of entrained air in the lubricating oil is improved, as determined by ASTM D-3427-15, as compared to release of entrained air achieved using a lubricating oil containing other than the at least one polyalkylene glycol. This disclosure also relates to lubricating oils having at least one oil soluble polyalkylene glycol (OSP).

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.

公开(公告)号：US20220145206A1

公开(公告)日：2022-05-12

申请号：US17453587

申请日：2021-11-04

Applicant: ExxonMobil Research and Engineering Company

Inventor： Nicholas W. McBride ,  Douglas E. Deckman ,  Mark L. Bushey ,  David G.L. Holt ,  Michael L. Blumenfeld

IPC: C10M129/74 ,  C10M169/04 ,  C10M125/22 ,  C10M135/10

Abstract: Provided is a low sulfated ash engine oil lubricant composition containing organic friction modifiers with improved fuel economy and corrosion resistance. The lubricant composition includes one or more metal free corrosion inhibitors having an organic acid group and/or one or more organo metallic naphthalene molecules having a ASTM D2896 total base number less than 3 mg KOH/g. The resulting lubricant composition improves ASTM D6557 corrosion protection for low sulfated ash engine oils containing organic friction modifiers, while maintaining exceptional fuel economy performance.

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.