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    STARTER FOR AN INTERNAL COMBUSTION ENGINE
    1.
    发明申请
    STARTER FOR AN INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：US20190338743A1

    公开(公告)日：2019-11-07

    申请号：US15967904

    申请日：2018-05-01

    Applicant: GM Global Technology Operations LLC

    Inventor： Suresh Gopalakrishnan ,  Lei Hao ,  Chandra S. Namuduri ,  Paul S. Lombardo ,  Jeffrey R. Aldrich ,  Chunhao J. Lee ,  Neeraj S. Shidore

    IPC: F02N11/08 ,  H02P6/08 ,  H02P6/17

    Abstract: An engine starter system includes a starter including a multi-phase brushless electric motor and an electronic commutator assembly. A controller includes an instruction set that is executable in response to a command to execute an engine starting event. Operation includes determining a desired starting profile, controlling the starter to engage a rotatable member of the engine, and monitoring the rotational speed of the electric motor via a rotor position sensing circuit. The starter inverter is dynamically controlled to control the electric motor to spin the rotatable member of the internal combustion engine responsive to the desired starting profile, including dynamically controlling the starter inverter to control the electric motor to control the spin of the engine responsive to the desired starting profile to prevent occurrence of an engine speed flare event during the engine starting event.

    Starter for an internal combustion engine
    2.
    发明授权
    Starter for an internal combustion engine 有权

    公开(公告)号：US10815954B2

    公开(公告)日：2020-10-27

    申请号：US15967904

    申请日：2018-05-01

    Applicant: GM Global Technology Operations LLC

    Inventor： Suresh Gopalakrishnan ,  Lei Hao ,  Chandra S. Namuduri ,  Paul S. Lombardo ,  Jeffrey R. Aldrich ,  Chunhao J. Lee ,  Neeraj S. Shidore

    IPC: F02N11/00 ,  F02N11/08 ,  H02P6/17 ,  H02P6/08

    Abstract: An engine starter system includes a starter including a multi-phase brushless electric motor and an electronic commutator assembly. A controller includes an instruction set that is executable in response to a command to execute an engine starting event. Operation includes determining a desired starting profile, controlling the starter to engage a rotatable member of the engine, and monitoring the rotational speed of the electric motor via a rotor position sensing circuit. The starter inverter is dynamically controlled to control the electric motor to spin the rotatable member of the internal combustion engine responsive to the desired starting profile, including dynamically controlling the starter inverter to control the electric motor to control the spin of the engine responsive to the desired starting profile to prevent occurrence of an engine speed flare event during the engine starting event.

    POWERTRAIN WITH ENGINE START FUNCTION USING RESETTABLE ENGINE SPEED PROFILE
    6.
    发明申请
    POWERTRAIN WITH ENGINE START FUNCTION USING RESETTABLE ENGINE SPEED PROFILE 审中-公开

    公开(公告)号：US20190176799A1

    公开(公告)日：2019-06-13

    申请号：US15836163

    申请日：2017-12-08

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Anthony L. Christman ,  Michael D. Potts ,  Paul S. Lombardo ,  Anthony Burt ,  Jeffrey R. Aldrich

    IPC: B60W20/10 ,  B60W30/192 ,  B60L15/20 ,  B60W20/40 ,  B60W10/08 ,  B60W10/06

    Abstract: A hybrid electric powertrain includes an electric machine delivering torque to an engine in an engine start event having initial cranking and transition phases. In response to a request for an engine start event, a controller commands delivery of the motor torque to the crankshaft. In the initial cranking phase the controller regulates crankshaft acceleration from zero speed up to a target cranking speed in a closed-loop manner via a predetermined fixed profile. In the transition phase, the crankshaft accelerates from the target cranking speed to a target idle speed using a feed-forward torque value blended, using a calibration table, from a predetermined engine drag torque to a reported engine torque. In the transition phase the controller periodically adjusts a speed trajectory of the crankshaft, with the magnitude and frequency of adjustment based on combustion of the engine and calibration of the feed-forward torque.

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