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    HIGH VOLTAGE SWITCHING FOR AN ELECTRIC VEHICLE
    1.
    发明公开
    HIGH VOLTAGE SWITCHING FOR AN ELECTRIC VEHICLE 审中-公开

    公开(公告)号：US20230398887A1

    公开(公告)日：2023-12-14

    申请号：US17839736

    申请日：2022-06-14

    Applicant: GM Global Technology Operations LLC

    Inventor： Dongxu Li ,  Lei Hao ,  Chunhao J. Lee ,  Suresh Gopalakrishnan ,  Junfeng Zhao

    IPC: B60L53/20 ,  H02M3/155 ,  B60L1/02

    CPC classification number: B60L53/20 ,  H02M3/155 ,  B60L1/02 ,  B60L2210/10

    Abstract: Examples described herein provide a method that includes determining whether a vehicle is operating in a first high voltage mode or a second high voltage mode. The method further includes, responsive to determining that the vehicle is operating in the first high voltage mode, providing electric power to an electric motor at a first high voltage and providing electric power to an auxiliary device at a second high voltage that is different than the first high voltage. The method further includes, responsive to determining that the vehicle is operating in the second high voltage mode, providing electric power to the electric motor at the second high voltage and providing electric power to the auxiliary device at the second high voltage.

    Powertrain control system and method of operating the same
    2.
    发明授权
    Powertrain control system and method of operating the same 有权

    公开(公告)号：US10676088B2

    公开(公告)日：2020-06-09

    申请号：US16003223

    申请日：2018-06-08

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Yiran Hu ,  Junfeng Zhao ,  Steven E. Muldoon ,  Chen-Fang Chang

    IPC: B60W30/14

    Abstract: A system and method are provided for operating a powertrain control system. The method includes receiving data measured from a plurality of sensors, the measured data relating to distance dependent speed values, and receiving information from one or more vehicle modules, the vehicle module information relating to distance independent speed values. The method further includes building a speed trajectory profile for a horizon window that includes a plurality of speed change regions represented by at least some distance dependent speed values or at least some distance independent speed values, and creating a synthesized speed profile for the horizon window by processing the speed trajectory profile. The synthesized speed profile optimizes efficiency of the powertrain control system at each of the plurality of speed change regions.

    Method and apparatus for controlling a multi-cylinder internal combustion engine
    3.
    发明授权
    Method and apparatus for controlling a multi-cylinder internal combustion engine 有权

    公开(公告)号：US10371116B2

    公开(公告)日：2019-08-06

    申请号：US15836183

    申请日：2017-12-08

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Junfeng Zhao ,  Jun-mo Kang

    IPC: F02P5/153 ,  F02P5/04 ,  F02D35/02

    Abstract: A multi-cylinder spark-ignition internal combustion engine includes a monitored cylinder and a plurality of non-monitored cylinders, a pressure sensor disposed to monitor in-cylinder pressure in the monitored cylinder and a rotational position sensor. The controller is in communication with the pressure sensor, the rotational position sensor and the spark controller. The controller monitors, via the pressure sensor, in-cylinder pressure for the monitored cylinder during a combustion event, and determines a first spark timing based upon a desired spark timing and the in-cylinder pressure. A spark controller controls spark timing for the monitored cylinder based upon the final spark timing. The controller monitors, via the rotational position sensor, engine rotational speed and crankshaft speed pulsations associated with the monitored cylinder and the non-monitored cylinders, and determines a modal coefficient for the non-monitored cylinders based upon the engine rotational speed and the crankshaft speed pulsations.

    METHOD AND APPARATUS FOR CONTROLLING A MULTI-CYLINDER INTERNAL COMBUSTION ENGINE
    4.
    发明申请
    METHOD AND APPARATUS FOR CONTROLLING A MULTI-CYLINDER INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：US20190178223A1

    公开(公告)日：2019-06-13

    申请号：US15836183

    申请日：2017-12-08

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Junfeng Zhao ,  Jun-mo Kang

    IPC: F02P5/153 ,  F02D35/02 ,  F02P5/04

    CPC classification number: F02P5/153 ,  F02D35/023 ,  F02D41/008 ,  F02D41/1497 ,  F02D2200/101 ,  F02P5/045 ,  F02P5/1512

    Abstract: A multi-cylinder spark-ignition internal combustion engine includes a monitored cylinder and a plurality of non-monitored cylinders, a pressure sensor disposed to monitor in-cylinder pressure in the monitored cylinder and a rotational position sensor. The controller is in communication with the pressure sensor, the rotational position sensor and the spark controller. The controller monitors, via the pressure sensor, in-cylinder pressure for the monitored cylinder during a combustion event, and determines a first spark timing based upon a desired spark timing and the in-cylinder pressure. A spark controller controls spark timing for the monitored cylinder based upon the final spark timing. The controller monitors, via the rotational position sensor, engine rotational speed and crankshaft speed pulsations associated with the monitored cylinder and the non-monitored cylinders, and determines a modal coefficient for the non-monitored cylinders based upon the engine rotational speed and the crankshaft speed pulsations.

    Model-based combustion timing and torque control for internal combustion engine assemblies
    5.
    发明授权
    Model-based combustion timing and torque control for internal combustion engine assemblies 有权

    公开(公告)号：US10273928B1

    公开(公告)日：2019-04-30

    申请号：US15796019

    申请日：2017-10-27

    Applicant: GM Global Technology Operations LLC

    Inventor： Junfeng Zhao ,  Jun-mo Kang ,  Yiran Hu

    IPC: F02P5/14 ,  F02P5/15 ,  F02D37/02

    Abstract: Disclosed are model-based combustion timing systems and control logic for engine assemblies, methods for making/operating such engine assemblies, and motor vehicles with spark-ignited engine assemblies implementing model-based combustion timing. A method for controlling torque output of an engine assembly includes receiving a requested torque demand for the engine, and determining a current fuel command and valve timing for the engine's power cylinder(s). A first math model is used to determine a desired CA50 based on the requested torque demand, a power cylinder indicated mean effective pressure (IMEP), an expander cylinder IMEP, and the current fuel command/valve timing. A second math model is used to determine a maximum brake torque (MBT) CA50 based on power cylinder and expander cylinder IMEPs, and current fuel command/valve timing. An engine control unit determines a final spark timing based on a correlation between the desired CA50 and MBT CA50, modified by a spark timing gain.

    Energy-optimized vehicle route selection
    6.
    发明授权
    Energy-optimized vehicle route selection 有权

    公开(公告)号：US10215576B2

    公开(公告)日：2019-02-26

    申请号：US15247243

    申请日：2016-08-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jun-mo Kang ,  Yiran Hu ,  Steven E. Muldoon ,  Chen-fang Chang ,  Dongxu Li ,  Junfeng Zhao

    IPC: G06F17/00 ,  G01C21/34 ,  G05D11/00 ,  G05D1/00 ,  B60W20/12 ,  B60K6/22 ,  B60K6/50 ,  G01C21/36

    Abstract: A method for generating energy-optimized travel routes with a vehicle navigation system includes generating candidate travel routes between a route origin and one or more route destinations, and then dividing each candidate travel route into a plurality of route segments. The method includes estimating expected travel speeds along each segment using cloud information and calculating an expected energy efficiency over each of the candidate travel routes using one or more vehicle-specific energy efficiency models. The travel routes are displayed via the navigation system, including a trace of the energy-optimized travel routes and an expected or relative energy efficiency along the energy-optimized travel routes. A vehicle includes the navigation system and a powertrain. A powertrain controller may control vehicle speed over a selected route to maintain an optimally energy-efficient speed.

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