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    FLUIDS FOR ELECTRIC VEHICLES
    1.
    发明申请
    FLUIDS FOR ELECTRIC VEHICLES 有权

    公开(公告)号：US20210380899A1

    公开(公告)日：2021-12-09

    申请号：US17321646

    申请日：2021-05-17

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Abigail R. Van Wassen ,  Andrew E. Taggi ,  Percy R. Kanga

    IPC: C10M171/02 ,  C09K5/10 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6567

    Abstract: A fluid includes a base stock and one or more additives. The base stock has a viscosity index of at least 80, and either a kinematic viscosity at 40° C. of at least 320 cSt or a kinematic viscosity at 100° C. of at least 14 cSt. The base stock includes greater than or equal to about 90 wt % saturates, less than or equal to about 10 wt % aromatics, and a sum of terminal/pendant propyl groups and terminal/pendant ethyl groups of at least 1.7 per 100 carbon atoms. The fluid has a thermal conductivity measured according to ASTM D7896 at 140° C. of 0.12 W/m·K or greater.

    Heat transfer fluids and methods of use
    2.
    发明授权
    Heat transfer fluids and methods of use 有权

    公开(公告)号：US11092393B1

    公开(公告)日：2021-08-17

    申请号：US16892897

    申请日：2020-06-04

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Gary Christensen ,  Kevin J. Kelly ,  Shuji Luo ,  Heinrich R. Braun ,  Tobias Klande ,  Behrouz Engheta ,  Jorg F. W. Weber ,  Andrew E. Taggi

    IPC: C09K5/10 ,  F28F23/00

    Abstract: This disclosure relates to heat transfer fluids for use in heat transfer systems. The heat transfer fluids comprise at least one non-aqueous dielectric heat transfer fluid. The non-aqueous dielectric heat transfer fluid has density (ρ), specific heat (cp), and dynamic viscosity (μ) properties. The heat transfer fluids have a normalized effectiveness factor (NEFfluid) as determined by the following equation: N ⁢ E ⁢ F fluid = D ⁢ E ⁢ F fluid D ⁢ E ⁢ F reference ; wherein DEFfluid is a dimensional effectiveness factor for the heat transfer fluid that is determined based on an equation designated in Table 1 below for a selected pump and a selected heat transfer circuit dominant flow regime; wherein DEFreference is a dimensional effectiveness factor for a reference fluid that is determined using the same equation designated in Table 1 for DEFfluid above for the same selected pump and the same selected heat transfer circuit dominant flow regime; and TABLE 1 (Heat Transfer Fluid and Reference Fluid) Selected Heat Transfer Circuit Flow Regime Selected Pump
    Laminar
    Transition (Blasius) Positive Displacement Pump
    ρ1 cp1 μ−1
    ρ0.25 cp1 μ−0.25 Centrifugal Pump
    ρ0.19 cp1 μ−0.19
    ρ0.04 cp1 μ−0.04 wherein the heat transfer fluid has a NEFfluid value equal to or greater than 1.0. This disclosure also provides a method for improving performance of a heat transfer system, a method for improving performance of an apparatus, and a method for selecting a heat transfer fluid for use in a heat transfer system. The heat transfer fluids and methods of this disclosure are applicable in situations where the heat transfer system is dominated by heat conveyance.

    Heat transfer fluids and methods of use
    4.
    发明授权
    Heat transfer fluids and methods of use 有权

    公开(公告)号：US10712105B1

    公开(公告)日：2020-07-14

    申请号：US16447398

    申请日：2019-06-20

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Gary Christensen ,  Kevin J. Kelly ,  Shuji Luo ,  Heinrich R. Braun ,  Tobias Klande ,  Behrouz Engheta ,  Jorg F. W. Weber ,  Andrew E. Taggi

    IPC: C09K5/10 ,  F28F23/00

    Abstract: This disclosure relates to heat transfer fluids for use in heat transfer systems. The heat transfer fluids comprise at least one non-aqueous dielectric heat transfer fluid. The non-aqueous dielectric heat transfer fluid has density (ρ), specific heat (cp), and dynamic viscosity (μ) properties. The heat transfer fluids have a normalized effectiveness factor (NEFfluid) as determined by the following equation: N ⁢ E ⁢ F fluid = DEF fluid DEF reference ; wherein DEFfluid is a dimensional effectiveness factor for the heat transfer fluid that is determined based on an equation designated in Table 1 below for a selected pump and a selected heat transfer circuit dominant flow regime; wherein DEFreference is a dimensional effectiveness factor for a reference fluid that is determined using the same equation designated in Table 1 for DEFfluid above for the same selected pump and the same selected heat transfer circuit dominant flow regime; and TABLE 1 (Heat Transfer Fluid and Reference Fluid) Selected Heat Transfer Circuit Flow Regime Transition Selected PumpLaminar(Blasius) Positive Displacement Pumpρ1 cp1 μ−1ρ0.25 cp1 μ−0.25 Centrifugal Pumpρ0.19 cp1 μ−0.19ρ0.04 cp1 μ−0.04 wherein the heat transfer fluid has a NEFfluid value equal to or greater than 1.0. This disclosure also provides a method for improving performance of a heat transfer system, a method for improving performance of an apparatus, and a method for selecting a heat transfer fluid for use in a heat transfer system. The heat transfer fluids and methods of this disclosure are applicable in situations where the heat transfer system is dominated by heat conveyance.

    METHOD FOR IMPROVING OXIDATION AND DEPOSIT RESISTANCE OF LUBRICATING OILS
    5.
    发明申请
    METHOD FOR IMPROVING OXIDATION AND DEPOSIT RESISTANCE OF LUBRICATING OILS 审中-公开

    公开(公告)号：US20200181525A1

    公开(公告)日：2020-06-11

    申请号：US16708793

    申请日：2019-12-10

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Douglas E. Deckman ,  Andrew E. Taggi ,  Mark P. Hagemeister ,  Andrew D. Satterfield

    IPC: C10M169/02 ,  C10M101/00 ,  C10M105/04 ,  C10M105/32 ,  C10M107/10 ,  C10M119/12

    Abstract: Provided is a method for improving oxidation resistance and deposit resistance of a lubricating oil for use in lubricating a mechanical component. The method includes the step of providing the lubricating oil to the mechanical component and measuring the improved oxidation and deposit resistance. The lubricating oil includes a lubricating oil base stock at from 0 to 80 wt %, at least one branched isoparaffin having a mole % of epsilon carbon as measured by C13 NMR of less than or equal to 10% at from 20 to 80 wt %, at least one viscosity modifier at from 5 to 20 wt %, and one or more other lubricating oil additives. The oxidation resistance in the CEC L-109 oxidation resistance test is improved to greater than 310 hours to achieve a 100% viscosity increase and the deposit resistance in the TEOST 33C is improve to total deposits of less than 45 mg as compared to oxidation resistance and deposit resistance achieved using a lubricating oil not containing the at least one branched isoparaffin.

    Heat Transfer Fluids and Methods of Use
    7.
    发明申请
    Heat Transfer Fluids and Methods of Use 有权

    公开(公告)号：US20210040369A1

    公开(公告)日：2021-02-11

    申请号：US16986314

    申请日：2020-08-06

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Behrouz Engheta ,  Tobias Klande ,  Heinrich R. Braun ,  Andrew E. Taggi

    IPC: C09K5/10 ,  F28D20/00 ,  C09K15/08

    Abstract: This disclosure relates to heat transfer fluids for use in an apparatus having a heat transfer system. In one embodiment, the heat transfer fluids have at least one Group IV base oil, as a major component; at least one phenolic antioxidant, as a minor component; and optionally an aminic antioxidant in an amount less than about 0.25 weight percent, based on the total weight of the heat transfer fluid. In another embodiment, the heat transfer fluids have at least one Group V base oil, as a major component; and a mixture of at least two antioxidants, as a minor component. The at least one Group IV base oil and the at least one Group V base oil have a kinematic viscosity (KV100) from about 0.5 cSt to about 12 cSt at 100° C. The mixture of at least two antioxidants has a phenolic antioxidant and an aminic antioxidant. This disclosure further relates to methods for improving thermal-oxidative stability of a heat transfer fluid used in an apparatus having a heat transfer system.

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