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    METHOD FOR CONTROLLING PRESSURE WITH A DIRECT METERED PUMP BASED ON ENGINE SUBCYCLE MASS BALANCE
    31.
    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
    32.
    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
    33.
    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
    34.
    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.

    FUEL INJECTION PRESSURE PULSATION DAMPENING SYSTEM
    40.
    发明申请
    FUEL INJECTION PRESSURE PULSATION DAMPENING SYSTEM 有权
    燃油喷射压力减震系统

    公开(公告)号：US20150219054A1

    公开(公告)日：2015-08-06

    申请号：US14170129

    申请日：2014-01-31

    Applicant: Cummins Inc.

    Inventor： Paul Peavler ,  Donald J. Benson ,  Paul Douglas Free ,  Jeffrey C. Huang ,  Eric Benham ,  C. Edward Morris, JR.

    IPC: F02M69/04

    CPC classification number: F02M69/04 ,  F02M47/027 ,  F02M55/008 ,  F02M2200/28 ,  F02M2200/315

    Abstract: A fuel injector has a plurality of injection fuel delivery passages, which transport fuel from a proximate end to an injector cavity near the distal end of the fuel injector, wherein less than a total number of injection fuel delivery passages include an orifice. This configuration provides a reduction in fueling variation from pulse to pulse (multi-pulse) with respect to pulse separation due to pressure variation while allowing a sufficient amount of fuel flow to the injector cavity. Thus, the consistency of Start-Of-Injection (SOI) and opening rate both improve significantly and advantageously. For compactness, the orifices may be positioned in a cover plate used to retain the components of the injection control valve assembly and may further be arranged in an arc segment when viewed along a longitudinal axis.

    Abstract translation: 燃料喷射器具有多个喷射燃料输送通道，其将燃料从燃料喷射器的远端附近的近端运送到喷射器腔，其中小于喷射燃料输送通道的总数包括孔口。 该配置提供了由于压力变化而相对于脉冲分离而从脉冲到脉冲（多脉冲）的加油变化减少，同时允许足够量的燃料流入喷射器腔。 因此，起始注入（SOI）和开放率的一致性都显着和有利地改善。 为了紧凑性，孔可以定位在用于保持喷射控制阀组件的部件的盖板中，并且当沿着纵向轴线观察时可以进一步布置在弧形段中。

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