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    TRANSMISSION WITH COLD SHIFT DELAY MITIGATION
    12.
    发明申请
    TRANSMISSION WITH COLD SHIFT DELAY MITIGATION 审中-公开

    公开(公告)号：US20180335133A1

    公开(公告)日：2018-11-22

    申请号：US15596498

    申请日：2017-05-16

    Applicant: GM Global Technology Operations LLC

    Inventor： David C. Webert ,  Todd R. Berger

    IPC: F16H61/10 ,  F16H3/66 ,  F16H59/72

    CPC classification number: F16H3/66 ,  F16H59/72 ,  F16H61/0059 ,  F16H63/48 ,  F16H63/486 ,  F16H2200/0065 ,  F16H2200/201 ,  F16H2200/2048 ,  F16H2200/2066 ,  F16H2200/2082

    Abstract: A method of operating a motor vehicle transmission includes measuring an operating temperature of the transmission, the transmission having at least seven torque transmitting mechanisms and at least three planetary gear sets, each planetary gear set having three gear members; determining if the transmission is in a park mode; determining if the operating temperature is below a predetermined threshold; if the operating temperature is below the predetermined threshold and the transmission is the park mode, implementing a shift delay mitigation process that includes engaging a fourth torque transmitting mechanism and a firth torque transmitting mechanism of the at least seven torque transmitting mechanisms so that they are locked to a ground to prevent a first gear member of the first planetary gear set from moving, which, in turn, prevents an input torque being transferred to a park pawl.

    Planetary gear train of automatic transmission for vehicles
    14.
    发明授权
    Planetary gear train of automatic transmission for vehicles 有权

    公开(公告)号：US10077821B2

    公开(公告)日：2018-09-18

    申请号：US15178442

    申请日：2016-06-09

    Applicant: Hyundai Motor Company

    Inventor： Seongwook Ji ,  Seong Wook Hwang ,  Woochurl Son ,  Wonmin Cho ,  Hyun Sik Kwon ,  Jae Chang Kook

    IPC: F16H3/66

    CPC classification number: F16H3/66 ,  F16H2200/006 ,  F16H2200/201 ,  F16H2200/2046

    Abstract: A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting changed torque of the engine, a first planetary gear set including first, second, and third rotational elements, a second planetary gear set including fourth, fifth, and sixth rotational elements, a third planetary gear set including seventh, eighth, and ninth rotational elements, a first rotation shaft, a second rotation shaft directly connected to the input shaft, a third rotation shaft, a fourth rotation shaft selectively connected to a transmission housing, a fifth rotation shaft directly connected to the output shaft, a sixth rotation shaft directly connected to the input shaft, a seventh rotation selectively connected to the first rotation shaft and the third rotation shaft, and an eighth rotation shaft selectively connected to the fourth rotation shaft and the fifth rotation shaft.

    CONTROL SYSTEM FOR HYBRID VEHICLE
    19.
    发明申请
    CONTROL SYSTEM FOR HYBRID VEHICLE 审中-公开

    公开(公告)号：US20180178642A1

    公开(公告)日：2018-06-28

    申请号：US15844818

    申请日：2017-12-18

    Applicant: Toyota Jidosha Kabushiki Kaisha

    Inventor： Kensei HATA ,  Hideaki Komada ,  Tatsuya Imamura ,  Takahito Endo

    IPC: B60K6/365 ,  F16H3/72 ,  B60W20/40 ,  B60W30/18

    CPC classification number: B60K6/365 ,  B60W20/40 ,  B60W30/18036 ,  F16H3/728 ,  F16H2200/201

    Abstract: A control system for hybrid vehicles is provided to prevent reduction in drive force when propelling the vehicle backwardly while activating the engine. In the differential mechanism, a first rotary element is connected to an engine, a second rotary element is connected to a first motor, a third rotary element is connected to a second motor, and a fourth rotary element is connected to an output unit. A third motor is connected to the output unit. When propelling the vehicle backwardly while activating the engine, first motor and the second motor establish reaction torques against engine torque, and the third motor generates drive torque to propel the hybrid vehicle in the reverse direction.

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