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    METHOD OF TRANSIENT CONTROL FOR ROBUST ENRICHMENT OPERATION IN LOWTEMPERATURE COMBUSTION ENGINE
    51.
    发明申请
    METHOD OF TRANSIENT CONTROL FOR ROBUST ENRICHMENT OPERATION IN LOWTEMPERATURE COMBUSTION ENGINE 有权

    公开(公告)号：US20220325671A1

    公开(公告)日：2022-10-13

    申请号：US17229418

    申请日：2021-04-13

    Applicant: GM Global Technology Operations LLC

    Inventor： Hanho Yun ,  Jun-mo Kang

    IPC: F02D13/02 ,  F02D41/02 ,  F02D41/14

    Abstract: A method of transient control for enrichment operation in a low-temperature combustion engine. The method includes determining if a current mode of the low-temperature combustion (LTC) engine is a positive valve overlap (PVO) mode. Determining if a previous mode of the LTC engine was also the PVO mode when the current mode is the PVO mode, wherein the previous mode is immediately prior to the current mode. Determining if the previous mode of the LTC engine was a negative valve overlap (NVO) mode when the previous mode was not the PVO mode. Initiating a predetermined enrichment PVO mode for the LTC engine based on the previous mode of the LTC engine. The predetermined enrichment PVO mode includes initiating a deep enrichment PVO mode, when the previous mode of the LTC engine was the NVO mode, and initiating a shallow enrichment PVO mode, when the previous mode of the LTC engine was not the NVO mode.

    Passive selective catalytic reduction (SCR) system and method for low-temperature combustion (LTC) engine
    52.
    发明授权
    Passive selective catalytic reduction (SCR) system and method for low-temperature combustion (LTC) engine 有权

    公开(公告)号：US11459967B2

    公开(公告)日：2022-10-04

    申请号：US17176277

    申请日：2021-02-16

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Hanho Yun ,  Jun-mo Kang

    IPC: F02D41/14 ,  F02D41/00 ,  F02D13/02 ,  F02P5/145 ,  F02D41/40 ,  F02D41/30

    Abstract: A combustion mode module is configured to switch operation of a low-temperature combustion (LTC) engine between a spark ignition (SI) mode, a positive valve overlap (PVO) mode, and a negative valve overlap (NVO) mode. A spark control module is configured to control a spark plug to generate a spark in a cylinder of the LTC engine when the LTC engine is operating in the SI mode. A valve control module is configured to control intake and exhaust valves of the cylinder to yield a PVO and a NVO when the LTC engine is operating in the PVO mode and the NVO mode, respectively. An air/fuel (A/F) control module is configured to adjust a desired A/F ratio of the LTC engine to a rich A/F ratio when operation of the LTC engine is switched to the PVO mode from either one of the SI mode and the NVO mode.

    Battery pressure active control
    57.
    发明授权
    Battery pressure active control 有权

    公开(公告)号：US12243988B2

    公开(公告)日：2025-03-04

    申请号：US18350488

    申请日：2023-07-11

    Applicant: GM Global Technology Operations LLC

    Inventor： Insu Chang ,  Chen-fang Chang ,  Jun-mo Kang ,  Hanho Yun ,  Chunhao J. Lee ,  Yongjie Zhu ,  Nicholas W. Pinto

    IPC: H01M10/42 ,  B60L50/64 ,  H01M10/052 ,  H01M10/48 ,  H01M50/204 ,  H01M50/249

    Abstract: A vehicle includes a propulsion system having multiple electric motors. A battery system is connected to the electric motors via a direct current to direct current (DC-DC) converter and an inverter. The battery system includes a battery assembly having a plurality of battery modules. Each of the battery modules has multiple individual battery cells arranged in battery packs, a set of sensors configured to monitor a set of parameters of each battery pack, and a plurality of battery pack mounts. Each battery pack mount includes a base plate and a top plate and an actuator configured to alter a distance between plates. A monitoring unit is configured to monitor a value representative of a battery pack pressure, determine whether the value falls within a pressure threshold window, and maintain the value within the pressure threshold window by actively altering the battery pack pressure.

    PRESSURE CONTROL OF BATTERY CELLS
    58.
    发明申请
    PRESSURE CONTROL OF BATTERY CELLS 有权

    公开(公告)号：US20250070351A1

    公开(公告)日：2025-02-27

    申请号：US18453432

    申请日：2023-08-22

    Applicant: GM Global Technology Operations LLC

    Inventor： Yongjie Zhu ,  Chunhao J. Lee ,  Jun-mo Kang ,  Insu Chang

    IPC: H01M50/242 ,  B60R16/033 ,  H01M10/04 ,  H01M50/202 ,  H01M50/211 ,  H01M50/249

    Abstract: A pressure management system includes a pressure plate disposed at an initial position relative to a battery cell, the battery cell disposed in a housing, the pressure plate and the housing defining an enclosure, where an increase in an internal pressure of the battery cell causes an expansion force to be applied to the pressure plate. The system includes a mechanical linkage attached to the pressure plate, the mechanical linkage configured to translate the expansion force to a reverse force that is opposed to the expansion force, and a rotatable component connected to the mechanical linkage, the rotatable component configured to rotate from a first orientation to a second orientation based on lateral movement of the mechanical linkage to allow the pressure plate to move and increase a volume of the enclosure.

    AUTOMATED MANAGEMENT SYSTEM FOR DUAL-DESIGN BATTERY PACK
    59.
    发明申请
    AUTOMATED MANAGEMENT SYSTEM FOR DUAL-DESIGN BATTERY PACK 有权

    公开(公告)号：US20250058674A1

    公开(公告)日：2025-02-20

    申请号：US18452073

    申请日：2023-08-18

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jun-mo Kang ,  Su-Yang Shieh

    IPC: B60L58/18 ,  B60L50/64 ,  B60L58/13 ,  H01M10/42 ,  H02J7/00

    Abstract: A system for managing an energy storage device in an electric vehicle includes a battery pack having an energy module, and a power module connected in parallel to the energy module. The energy module is adapted to generate a first current. At least one DC-to-DC (direct current to direct current) converter is adapted to receive the first current from the energy module and transmit a current, referred to herein as “DC-DC current”, to the power module. The system includes a controller having a processor and tangible, non-transitory memory on which instructions are recorded for automated management of a set of parameters related to the battery pack, subject to a plurality of constraints. The power module is adapted to deliver a second current for powering a load in the electric vehicle. Operation of the electric vehicle is controlled based in part on the set of parameters.

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