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    Brushless starter system with pinion pre-engagement control
    2.
    发明授权
    Brushless starter system with pinion pre-engagement control 有权

    公开(公告)号：US10724491B2

    公开(公告)日：2020-07-28

    申请号：US15967918

    申请日：2018-05-01

    Applicant: GM Global Technology Operations LLC

    Inventor： Chandra S. Namuduri ,  Kenneth J. Shoemaker ,  Chunhao J. Lee ,  Lei Hao ,  Thomas W. Nehl ,  Suresh Gopalakrishnan

    IPC: F02N11/00 ,  F02N11/08

    Abstract: An electric starter system is used with an engine. The starter system may include a solenoid device coupled to a pinion gear, a brushless starter motor connectable to the engine via the pinion gear during a requested engine start event, and a controller. In response to the start event, when the engine speed is less than a threshold speed, the controller delivers a control current to the solenoid device at a peak current level sufficient for translating the pinion gear into contact with the flywheel. The control current is reduced to a holding current level less than the peak current level after the pinion gear is engaged with the flywheel. Motor torque is commanded from the starter motor, through the pinion gear, and to the flywheel while maintaining the holding current level, and held for a duration sufficient for starting the engine.

    BRUSHLESS STARTER SYSTEM WITH PINION PRE-ENGAGEMENT CONTROL
    3.
    发明申请
    BRUSHLESS STARTER SYSTEM WITH PINION PRE-ENGAGEMENT CONTROL 审中-公开

    公开(公告)号：US20190338744A1

    公开(公告)日：2019-11-07

    申请号：US15967918

    申请日：2018-05-01

    Applicant: GM Global Technology Operations LLC

    Inventor： Chandra S. Namuduri ,  Kenneth J. Shoemaker ,  Chunhao J. Lee ,  Lei Hao ,  Thomas W. Nehl ,  Suresh Gopalakrishnan

    IPC: F02N11/08

    Abstract: An electric starter system is used with an engine. The starter system may include a solenoid device coupled to a pinion gear, a brushless starter motor connectable to the engine via the pinion gear during a requested engine start event, and a controller. In response to the start event, when the engine speed is less than a threshold speed, the controller delivers a control current to the solenoid device at a peak current level sufficient for translating the pinion gear into contact with the flywheel. The control current is reduced to a holding current level less than the peak current level after the pinion gear is engaged with the flywheel. Motor torque is commanded from the starter motor, through the pinion gear, and to the flywheel while maintaining the holding current level, and held for a duration sufficient for starting the engine.

    Smart power distribution unit
    4.
    发明授权
    Smart power distribution unit 有权

    公开(公告)号：US09694769B2

    公开(公告)日：2017-07-04

    申请号：US14245774

    申请日：2014-04-04

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Chandra S. Namuduri ,  Shawn L. Boozer ,  Kenneth J. Shoemaker ,  Michael G. Reynolds

    IPC: B60R16/033

    CPC classification number: B60R16/033 ,  Y10T29/49117

    Abstract: Apparatus for voltage stabilization in a vehicle includes a battery distribution module having a load module managing electrical power to one or more auxiliary loads, a first switch coupling a starter motor and an ESD to the load module only when closed, a second switch coupling an auxiliary ESD to the load module only when closed, and a controller integrated with a PC board attached to the first and second switch devices. The controller is configured to control opening and closing of the first and second switches based on at least one of a plurality of signals received by the controller. The primary ESD is electrically coupled a primary fuse terminal of the battery distribution module which electrically couples the primary ESD to a second terminal of the first switch and the starter motor. The auxiliary ESD is electrically coupled to an auxiliary fuse terminal of the battery distribution module which electrically couples a first terminal of the second switch to the auxiliary ESD.

    Apparatus and method for vehicle voltage stabilization
    8.
    发明授权
    Apparatus and method for vehicle voltage stabilization 有权

    公开(公告)号：US09803608B2

    公开(公告)日：2017-10-31

    申请号：US14245746

    申请日：2014-04-04

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Chandra S. Namuduri ,  Shawn L. Boozer ,  Michael G. Reynolds ,  Kenneth J. Shoemaker

    IPC: F02N11/08

    CPC classification number: F02N11/087 ,  F02N11/0814 ,  F02N11/0862 ,  F02N2250/02

    Abstract: Method for voltage stabilization during an engine starting event of a vehicle includes receiving, at a switch device module, an active Start_ON signal from a starter solenoid module indicating initiation of the engine starting event. At the switch device module, an auxiliary electrical energy storage device (ESD) is electrically coupled to one or more auxiliary loads within a predetermined delay since the active Start_ON signal was received. A primary ESD and a starter motor are electrically decoupled from the one or more auxiliary loads only after the auxiliary ESD has been electrically coupled to the one or more auxiliary loads. In response to a predetermined condition occurring while the primary ESD and the starter motor are electrically decoupled from the one or more auxiliary loads, the primary ESD and the starter motor are electrically coupled to the one or more auxiliary loads.

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