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    DIAGNOSIS OF SWITCH STUCK OPEN CONDITION FOR A BUTTON THAT ACTUATES THREE OR MORE SWITCHES
    1.
    发明申请
    DIAGNOSIS OF SWITCH STUCK OPEN CONDITION FOR A BUTTON THAT ACTUATES THREE OR MORE SWITCHES 审中-公开

    公开(公告)号：US20190369164A1

    公开(公告)日：2019-12-05

    申请号：US15992782

    申请日：2018-05-30

    Applicant: GM Global Technology Operations LLC

    Inventor： Dhammika S. Wijesundera ,  Ming Zhao ,  Joshua McDonough ,  Junghyun Kim

    IPC: G01R31/327 ,  G01R31/00

    Abstract: A method for detecting a failure mode in an electronic selector having a button coupled to a first switch, a second switch, and a third switch, the method includes incrementing a button activation counter once for each button activation event and incrementing a first switch-closed counter, a second switch-closed counter, and a third switch-closed counter once for each button activation event if the respective switch is closed at any time during the button activation event. The method further includes incrementing a first switch-opened counter, a second switch-opened counter, and a third switch-opened counter once for each button activation event. The method further includes evaluating a fault status of the first switch, the second switch, or the third switch when the button activation counter reaches or exceeds a predetermined threshold; and reporting the fault status of the first switch, the second switch or the third switch.

    Diagnosis of switch stuck open condition for a button that actuates three or more switches
    5.
    发明授权
    Diagnosis of switch stuck open condition for a button that actuates three or more switches 有权

    公开(公告)号：US10571521B2

    公开(公告)日：2020-02-25

    申请号：US15992782

    申请日：2018-05-30

    Applicant: GM Global Technology Operations LLC

    Inventor： Dhammika S. Wijesundera ,  Ming Zhao ,  Joshua McDonough ,  Junghyun Kim

    IPC: G01R31/327 ,  G01R31/00

    Abstract: A method for detecting a failure mode in an electronic selector having a button coupled to a first switch, a second switch, and a third switch, the method includes incrementing a button activation counter once for each button activation event and incrementing a first switch-closed counter, a second switch-closed counter, and a third switch-closed counter once for each button activation event if the respective switch is closed at any time during the button activation event. The method further includes incrementing a first switch-opened counter, a second switch-opened counter, and a third switch-opened counter once for each button activation event. The method further includes evaluating a fault status of the first switch, the second switch, or the third switch when the button activation counter reaches or exceeds a predetermined threshold; and reporting the fault status of the first switch, the second switch or the third switch.

    ELECTRONIC TRANSMISSION RANGE SELECTION SUBSYSTEM IN A HYDRAULIC CONTROL SYSTEM FOR AN AUTOMATIC TRANSMISSION
    6.
    发明申请
    ELECTRONIC TRANSMISSION RANGE SELECTION SUBSYSTEM IN A HYDRAULIC CONTROL SYSTEM FOR AN AUTOMATIC TRANSMISSION 有权
    用于自动变速器的液压控制系统中的电子变速箱范围选择子系统

    公开(公告)号：US20160167635A1

    公开(公告)日：2016-06-16

    申请号：US14570329

    申请日：2014-12-15

    Applicant: GM Global Technology Operations LLC

    Inventor： Vijay A. Neelakantan ,  Joshua McDonough ,  Matthew R. Knoth ,  Philip C. Lundberg

    IPC: B60T13/68 ,  B60T13/66

    CPC classification number: B60T13/686 ,  B60T13/662

    Abstract: A hydraulic control system for a transmission includes a source of pressurized hydraulic fluid, a park servo connected to a park mechanism, the park servo having a park side, an out-of-park side, and a biasing member disposed on the park side. A first valve assembly includes a first inlet port in fluid communication with the source of pressurized hydraulic fluid, a first outlet port, and a first valve for selectively allowing fluid communication between the first inlet port and the first outlet port. A second valve assembly includes a second inlet port in direct fluid communication downstream of the first valve assembly, a second outlet port in direct fluid communication with the out-of-park side of the park servo, and a second valve moveable between an out-of-park position and a park position.

    Abstract translation: 用于变速器的液压控制系统包括加压液压流体源，连接到停放机构的驻车伺服机构，具有驻车侧的驻车伺服机构，驻车外侧以及设置在停车侧的偏置构件。 第一阀组件包括与加压液压流体源流体连通的第一入口端口，第一出口端口和用于选择性地允许第一入口端口和第一出口端口之间的流体连通的第一阀门。 第二阀组件包括在第一阀组件的下游直接流体连通的第二入口端口，与停放伺服器的停车外侧直接流体连通的第二出口端口，以及第二阀门， 公园位置和公园位置。

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