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    LOW VISCOSITY GEAR OIL COMPOSITIONS FOR ELECTRIC AND HYBRID VEHICLES
    1.
    发明申请
    LOW VISCOSITY GEAR OIL COMPOSITIONS FOR ELECTRIC AND HYBRID VEHICLES 审中-公开

    公开(公告)号：US20200277542A1

    公开(公告)日：2020-09-03

    申请号：US16744670

    申请日：2020-01-16

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Luca Salvi ,  Zhisheng Gao ,  Abigail R. Van Wassen ,  Martin N. Webster

    IPC: C10M169/04 ,  C10M171/02

    Abstract: This disclosure relates to a lubricating oil (e.g., gear oil) for use in an electric or hybrid vehicle. The lubricating oil has a composition including one or more lubricating oil base stocks as a major component, and one or more lubricating oil additives, as a minor component. The one or more lubricating oil base stocks include at least one Group IV base oil, or at least one Group V base oil. The lubricating oil has a kinematic viscosity (KV100) from 1 cSt to 7 cSt at 100° C. as determined by ASTM D-445, and an electrical conductivity at room temperature of less than 15,000 pS/m as determined by ASTM D-2624. This disclosure also relates to methods for producing a lubricating oil for a transmission, gear train, gear set, gear box, or gears of an electric vehicle powertrain and methods for improving energy efficiency, while maintaining or improving wear control.

    SULFUR-FREE, ASHLESS, LOW PHOSPHORUS LUBRICANT COMPOSITIONS WITH IMPROVED OXIDATION STABILITY
    3.
    发明申请
    SULFUR-FREE, ASHLESS, LOW PHOSPHORUS LUBRICANT COMPOSITIONS WITH IMPROVED OXIDATION STABILITY 有权

    公开(公告)号：US20210238493A1

    公开(公告)日：2021-08-05

    申请号：US17148639

    申请日：2021-01-14

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Zhisheng Gao

    IPC: C10M111/00 ,  C10M137/08 ,  C10M133/12

    Abstract: Sulfur-free, ashless, and low phosphorus-containing lubricant compositions for use as engine oil having improved oxidation stability. The lubricant composition can include about 60.0 mass % to about 99.8 mass % of an oil base stock, at least one ashless antiwear additive, at least one ashless detergent, and at least one antioxidant, based on a total mass of the lubricant composition. The oil base stock can include at least one polyalphaolefin and at least one alkyl naphthalene. The lubricant composition can contain less than about 0.05 mass % phosphorus, less than about 0.05 mass % sulfur, and less than about 0.05 mass % ash. The lubricant composition can be made by a process that includes combining the above-mentioned components to provide a lubricant composition.

    Fuel compositions for controlling combustion in engines
    4.
    发明授权
    Fuel compositions for controlling combustion in engines 有权

    公开(公告)号：US11220648B2

    公开(公告)日：2022-01-11

    申请号：US16777955

    申请日：2020-01-31

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Eugine Choi ,  Matthew W. Boland ,  Zhisheng Gao ,  Luca Salvi ,  Shamel Merchant ,  Bruce W. Crawley

    IPC: C10L10/10 ,  C10L1/02 ,  C10L1/16

    Abstract: Naphtha boiling range compositions are provided that can have improved combustion properties (relative to the research octane number of the composition) in spark ignition engines and/or compression ignition engines. The improved combustion properties can be achieved by controlling the total combined amounts of n-paraffins and isoparaffins that include a straight-chain propyl group (R1—CH2—CH2—CH2—R2). For such a straight-chain propyl group, R2 can correspond to any convenient CxHy group that can appear in a paraffin or isoparaffin. R1 can correspond to a hydrogen atom, making the straight-chain propyl group a terminal n-propyl group; or R1 can correspond to any convenient CxHy group that can appear in a paraffin or isoparaffin.

    METHOD AND COMPOSITION FOR PREVENTING OR REDUCING ENGINE KNOCK AND PRE-IGNITION IN HIGH COMPRESSION SPARK IGNITION ENGINES
    6.
    发明申请
    METHOD AND COMPOSITION FOR PREVENTING OR REDUCING ENGINE KNOCK AND PRE-IGNITION IN HIGH COMPRESSION SPARK IGNITION ENGINES 审中-公开

    公开(公告)号：US20180057769A1

    公开(公告)日：2018-03-01

    申请号：US15792159

    申请日：2017-10-24

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Zhisheng Gao ,  Luca Salvi ,  Eugine Choi ,  Matthew W. Boland

    IPC: C10M169/04 ,  C10M105/38 ,  C10M137/08

    Abstract: A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine lubricated with a lubricating oil by introducing to a combustion chamber of the engine from 0.1 to 5% by volume of the gasoline used a lubricating oil as a formulated oil, said formulated oil having a composition comprising (i) a major amount of a lubricating oil base stock comprising at least 80% by weight of one branched ester having at least 15% of the total carbons in the form of methyl groups, and (ii) a minor amount of at least one ashless amine phosphate antiwear additive. Also provided is a lubricating engine oil for high compression spark ignition engines including (i) a major amount of a lubricating oil base stock comprising at least 80% by weight a trimethylol propane ester of 50:50 mixture of isobutyric acid and 3,5,5-trimethylhexanoic acid and (ii) a minor amount of at least one amine phosphate ashless antiwear additive.

    Method for improving fuel economy test precision in on-road vehicles
    9.
    发明授权
    Method for improving fuel economy test precision in on-road vehicles 有权

    公开(公告)号：US10458830B2

    公开(公告)日：2019-10-29

    申请号：US15667135

    申请日：2017-08-02

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Zhisheng Gao ,  Steven M. Jetter ,  Riccardo Conti ,  Arthur T. Andrews ,  Aparna Subramanian ,  Leonard R. Koenig ,  Steven Kennedy

    IPC: G01M15/05 ,  G01F9/02 ,  G07C5/00

    Abstract: A method for improving fuel efficiency testing precision in on-road vehicles. The method comprises: installing one or more dataloggers in one or more vehicles, each datalogger configured to receive fuel consumption data broadcast by an on-road vehicle's engine control unit (ECU); transmitting the fuel consumption data from the one or more dataloggers in the one or more on-road vehicles to a processor; and analyzing, using the processor, the fuel consumption data from the one or more dataloggers in the one or more on-road vehicles to determine fuel efficiency of the one or more on-road vehicles. The fuel consumption data comprises fuel rate data from the ECU which is transmitted through the one or more dataloggers, engine speed and other operating parameters from the ECU that are transmitted through the one or more dataloggers, torque sensor data which is transmitted through the one or more dataloggers, and traditional fuel log data.

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