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    FUEL INJECTOR WITH FLEXIBLE MEMBER
    31.
    发明公开
    FUEL INJECTOR WITH FLEXIBLE MEMBER 审中-公开

    公开(公告)号：US20230167793A1

    公开(公告)日：2023-06-01

    申请号：US17578171

    申请日：2022-01-18

    Applicant: Cummins Inc.

    Inventor： Donald J. Benson ,  Ahmad M. Sabri

    IPC: F02M55/00 ,  B05B1/30 ,  F02M51/06 ,  F02M61/04 ,  F02M61/18

    CPC classification number: F02M55/002 ,  B05B1/3053 ,  F02M51/0603 ,  F02M61/04 ,  F02M61/1806 ,  F02M61/1886 ,  F02M2200/21 ,  F02M2200/26 ,  F02M2200/9053

    Abstract: A fuel injector includes an injector body comprising an internal injector cavity, a flow passageway, and a drain conduit. The flow passageway is in fluid communication with at least one injector orifice. The fuel injector further includes a valve assembly comprising a valve seat and a valve member in fluid communication with the fuel circuit. The valve member is configured to move between an open position allowing fuel flow through the at least one injector orifice and a closed position inhibiting fuel flow through the at least one injector orifice. The fuel injector also includes a nozzle valve element fluidly coupled to the valve assembly, an actuator operably coupled to the valve assembly and the nozzle valve element, and a flexible member configured to elastically deform in response to pressure in the fuel injector. The flexible member is configured to inhibit flow to the drain circuit during an injection event.

    METHOD FOR CONTROLLING PRESSURE WITH A DIRECT METERED PUMP BASED ON ENGINE SUBCYCLE MASS BALANCE
    32.
    发明申请
    METHOD FOR CONTROLLING PRESSURE WITH A DIRECT METERED PUMP BASED ON ENGINE SUBCYCLE MASS BALANCE 有权

    公开(公告)号：US20220252018A1

    公开(公告)日：2022-08-11

    申请号：US17630466

    申请日：2019-08-02

    Applicant: Cummins Inc.

    Inventor： Paul Peavler ,  Donald J. Benson ,  David Michael Carey ,  Timothy J. Viola

    IPC: F02D41/22 ,  F02D41/38

    Abstract: The present disclosure relates to a method for controlling pressure of an engine, including a controller structured to implement the method and an engine system including the controller. More specifically, the present disclosure relates to a method based on a mass balance analysis of a fuel system to determine how much mass needs to be pumped to maintain or achieve a certain pressure for the engine. In some embodiments, the method analyzes how much mass can be pumped by each pumping event based on current engine conditions. The analysis is performed over the smallest repeatable pump events and cylinder events cycle, or “subcycle,” based on the number of pump events and cylinder events for a given engine configuration.

    FUEL SYSTEM MANAGEMENT DURING CYLINDER DEACTIVATION OPERATION
    33.
    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.

    ACTIVE CONTROL VALVE FOR A FLUID PUMP
    34.
    发明申请
    ACTIVE CONTROL VALVE FOR A FLUID PUMP 有权

    公开(公告)号：US20210131421A1

    公开(公告)日：2021-05-06

    申请号：US17070299

    申请日：2020-10-14

    Applicant: Cummins Inc.

    Inventor： Donald J. Benson ,  Bela Doszpoly ,  Paul Peavler

    IPC: F04B49/22 ,  F04B49/06 ,  F02M37/04

    Abstract: A fluid pump comprising a fluid inlet configured to receive a fluid, a plunger configured to reciprocate within a cylinder from a top dead center position to a bottom dead center position and back to the top dead center position during a given pumping cycle, a pumping chamber defined by the cylinder and the plunger, the pumping chamber being configured to receive the fluid from the fluid inlet, a control valve configured to open to allow fluid to be provided to the pumping chamber, and close after the plunger has passed the bottom dead center position, and a fluid outlet configured to receive a delivery amount of the fluid from the pumping chamber, wherein a first amount of fluid is configured to be provided to the pumping chamber, the first amount of fluid being greater than the delivery amount of fluid.

    FUEL PUMP PRESSURE CONTROL STRUCTURE AND METHODOLOGY
    35.
    发明申请
    FUEL PUMP PRESSURE CONTROL STRUCTURE AND METHODOLOGY 审中-公开

    公开(公告)号：US20190331053A1

    公开(公告)日：2019-10-31

    申请号：US16344764

    申请日：2017-10-24

    Applicant: Cummins Inc.

    Inventor： Donald J. Benson ,  Paul Peavler

    IPC: F02D41/38 ,  F02M59/08

    Abstract: A method and system is provided of controlling a pump having a pumping element configured to provide pressurized fuel to a common rail accumulator coupled to a plurality of fuel injectors configured to inject fuel into a corresponding plurality of cylinders of an engine, comprising: receiving rail pressure values indicating a current fuel pressure in the accumulator; and responding to the received at least one rail pressure value by controlling operation of the pumping element during each potential pumping event of the pumping element to generate actual pumping events during at least some of the potential pumping events to cause the rail pressure values to remain within a desired range and to at least one of increase an overall efficiency of the pump, decrease audible noise generated by the pump, increase reliability of the pump and reduce injection pressure variations at the plurality of fuel injectors.

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