Method of Controlling Electric Oil Pump for Vehicle

    公开(公告)号:US20230051429A1

    公开(公告)日:2023-02-16

    申请号:US17730762

    申请日:2022-04-27

    IPC分类号: F01M1/16 F01M1/02 F01M1/20

    摘要: A method of controlling an electric oil pump (EOP) for a vehicle includes, if a current temperature of oil is lower than a reference temperature, determining whether an EOP RPM is lower than a minimum driving RPM, if the EOP RPM is lower than the minimum driving RPM, applying a first reduction rate for a first setting time and reducing a target line pressure and an instruction RPM of the EOP, if the EOP RPM is equal to or higher than the minimum driving RPM, determining whether vibration of the EOP RPM is generated above a reference vibration, and if the vibration is generated above the reference vibration, applying a second reduction rate for a second setting time and reducing the target line pressure or the instruction RPM of the EOP.

    POWERTRAIN FOR ELECTRIC VEHICLE
    5.
    发明申请

    公开(公告)号:US20220074474A1

    公开(公告)日:2022-03-10

    申请号:US17531475

    申请日:2021-11-19

    摘要: A powertrain for an electric vehicle includes: a planetary gear having a first rotating element, a second rotating element, and a third rotating element, wherein a first rotating element is connected to a first shaft and the second rotating element is connected to a second shaft; a first motor configured to selectively supply power to the first shaft at two or more gear ratios; a first shift assembly configured to transfer power of the first motor to the first shaft through one of two or more external engagement gear trains having different gear ratios; and a second motor configured to selectively supply power to the first shaft and the second shaft. The third shaft is fixedly disposed on a transmission housing, and any two shafts among the first, second and third shafts restrain each other.

    HYDRAULIC PRESSURE CONTROL METHOD FOR A VEHICLE TRANSMISSION

    公开(公告)号:US20230053741A1

    公开(公告)日:2023-02-23

    申请号:US17744193

    申请日:2022-05-13

    摘要: A hydraulic pressure control method for a vehicle transmission includes accumulating factors representing vehicle usage, accumulating factors representing driver's driving tendency, calculating a first line pressure compensation value according to the usage depending on the accumulated values of the factors representing the vehicle usage, calculating a second line pressure compensation value according to the driver's driving tendency depending on the accumulated values of the factors representing the driver's driving tendency, determining a final line pressure by adding the first and second line pressure compensation values according to the usage and the driver's driving tendency to a basic line pressure, and operating a transmission hydraulic system according to the final line pressure.

    METHOD OF CONTROLLING AN ELECTRIC OIL PUMP OF A VEHICLE

    公开(公告)号:US20230003297A1

    公开(公告)日:2023-01-05

    申请号:US17734537

    申请日:2022-05-02

    IPC分类号: F16H61/00 F16H61/02

    摘要: A method of controlling an electric oil pump (EOP) of a vehicle includes: confirming a gear shift type when a gear shift of a vehicle is started; compensating for the number of revolutions of the EOP according to the confirmed gear shift type; confirming whether a measured line pressure converges on a command line pressure while the compensating for the number of revolutions of the EOP according to the gear shift type is performed; and, when it is determined that the measured line pressure does not converge on the command line pressure, additionally compensating for the number of revolutions of the EOP.