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    SYSTEMS AND METHODS FOR CYLINDER DEACTIVATION OPERATION CONTROL
    1.
    发明公开
    SYSTEMS AND METHODS FOR CYLINDER DEACTIVATION OPERATION CONTROL 审中-公开

    公开(公告)号：US20240026833A1

    公开(公告)日：2024-01-25

    申请号：US18376310

    申请日：2023-10-03

    Applicant: Cummins Inc. ,  Tula Technology, Inc.

    Inventor： J. Steven Kolhouse ,  Ross A. Phillips

    IPC: F02D17/02 ,  F02D41/00

    CPC classification number: F02D17/02 ,  F02D41/0087 ,  F02D2041/389

    Abstract: A method of controlling a fixed cylinder deactivation (CDA) system of an engine system is provided. The method includes: deactivating, by a controller, a cylinder of the engine system to operate the engine system in a fixed CDA mode; determining, by the controller, a temperature of an injector tip nozzle associated with the cylinder; comparing, by the controller, the temperature of the injector tip nozzle to a threshold temperature; and in response to determining that the temperature of the injector tip nozzle is greater than the threshold temperature, activating, by the controller, the cylinder.

    SYSTEMS AND METHODS FOR SKIP-FIRE OPERATION CONTROL
    3.
    发明申请
    SYSTEMS AND METHODS FOR SKIP-FIRE OPERATION CONTROL 有权

    公开(公告)号：US20230016806A1

    公开(公告)日：2023-01-19

    申请号：US17952070

    申请日：2022-09-23

    Applicant: CUMMINS INC. ,  TULA TECHNOLOGY, INC.

    Inventor： J. Steven Kolhouse ,  Ross A. Phillips

    IPC: F02D17/02 ,  F02D41/00

    Abstract: A method of controlling a skip-fire cylinder deactivation system of an engine system is provided. The method includes a controller deactivating a cylinder of the engine system to operate the engine system in a skip-fire mode. The method further includes determining a temperature of an injector tip nozzle associated with the cylinder and comparing the temperature of the injector tip nozzle to a threshold a temperature. In response to determining that the temperature of the injector tip nozzle is greater than the threshold temperature, the cylinder is activated by the controller.

    Fuel system management during cylinder deactivation operation
    5.
    发明授权
    Fuel system management during cylinder deactivation operation 有权

    公开(公告)号：US11905908B2

    公开(公告)日：2024-02-20

    申请号：US17498003

    申请日：2021-10-11

    Applicant: Cummins Inc.

    Inventor： Ross A. Phillips ,  Donald J. Benson ,  J. Steven Kolhouse ,  Avra Brahma

    IPC: F02D41/38 ,  F02D41/00

    CPC classification number: F02D41/3845 ,  F02D41/0087 ,  F02D2200/0602

    Abstract: A method for operating an engine fueling system to manage fuel in an accumulator supplying fuel to an engine including multiple cylinders comprising monitoring fuel load in the accumulator, determining that the engine is operating in a cylinder deactivation mode such as a skip-fire mode during which one or more fueling events to one or more of the cylinders is being skipped, and controlling a supply of fuel from a fuel pump to the accumulator during the cylinder deactivation mode operation. In embodiments, controlling the supply of fuel includes causing fuel to be supplied from the fuel pump to the accumulator if the monitored fuel load is less than or equal to a first fuel load, and causing fuel to be not supplied from the fuel pump to the accumulator if the monitored fuel load is greater than the first load value. Controlling the supply of fuel may comprise controlling the supply of fuel during each fueling event cycle of each deactivated cylinder.

    FUEL SYSTEM MANAGEMENT DURING CYLINDER DEACTIVATION OPERATION
    8.
    发明申请
    FUEL SYSTEM MANAGEMENT DURING CYLINDER DEACTIVATION OPERATION 有权

    公开(公告)号：US20220120233A1

    公开(公告)日：2022-04-21

    申请号：US17498003

    申请日：2021-10-11

    Applicant: Cummins Inc.

    Inventor： Ross A. Phillips ,  Donald J. Benson ,  J. Steven Kolhouse ,  Avra Brahma

    IPC: F02D41/38 ,  F02D41/00

    Abstract: A method for operating an engine fueling system to manage fuel in an accumulator supplying fuel to an engine including multiple cylinders comprising monitoring fuel load in the accumulator, determining that the engine is operating in a cylinder deactivation mode such as a skip-fire mode during which one or more fueling events to one or more of the cylinders is being skipped, and controlling a supply of fuel from a fuel pump to the accumulator during the cylinder deactivation mode operation. In embodiments, controlling the supply of fuel includes causing fuel to be supplied from the fuel pump to the accumulator if the monitored fuel load is less than or equal to a first fuel load, and causing fuel to be not supplied from the fuel pump to the accumulator if the monitored fuel load is greater than the first load value. Controlling the supply of fuel may comprise controlling the supply of fuel during each fueling event cycle of each deactivated cylinder.

    SLOTTED STATOR CORE AND ADDITIVE MANUFACTURING METHOD FOR PRODUCTION
    9.
    发明申请
    SLOTTED STATOR CORE AND ADDITIVE MANUFACTURING METHOD FOR PRODUCTION 有权

    公开(公告)号：US20210044185A1

    公开(公告)日：2021-02-11

    申请号：US16936913

    申请日：2020-07-23

    Applicant: Cummins Inc.

    Inventor： Edward B. Manring ,  Ross A. Phillips ,  Steven E. Ferdon

    IPC: H02K15/085 ,  H02K1/16

    Abstract: A one-piece solenoid stator core is provided, comprising: a plurality of outer wall segments; a plurality of inner wall segments; and a lower wall extending between the plurality of outer wall segments and the plurality of inner wall segments; wherein a plurality of outer slots is defined between the plurality of outer wall segments and a plurality of inner slots is defined between the plurality of inner wall segments, each of the outer slots being radially aligned with an inner slot relative to a central axis of the stator core.

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