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    Systems and methods for a dual fuel system of a variable displacement engine
    2.
    发明授权
    Systems and methods for a dual fuel system of a variable displacement engine 有权

    公开(公告)号：US11480127B2

    公开(公告)日：2022-10-25

    申请号：US16880782

    申请日：2020-05-21

    Applicant: Ford Global Technologies, LLC

    Inventor： Adam Banker ,  Ross Pursifull

    IPC: F02D41/00 ,  F02D41/30 ,  F02M37/18 ,  F02D17/02 ,  F02M37/00

    Abstract: Systems and methods are provided for operating a port fuel and direct injection fuel system of a rolling variable displacement engine (rVDE). In one example, a method may include selecting between controlling a lift pump of the fuel system to output fuel at a mechanically limited pressure and controlling the lift pump to output fuel at a pressure lower than the mechanically limited pressure based on whether port fuel injection is used. In this way, the lift pump may be controlled without feedback from a pressure sensor, reducing system costs, while electrical power consumption increases due to operating the lift pump to output fuel at the mechanically limited pressure are minimized due to the rVDE technology, which reduces port fuel injection usage.

    Inline pump assembly and method
    5.
    发明授权
    Inline pump assembly and method 有权

    公开(公告)号：US11028838B2

    公开(公告)日：2021-06-08

    申请号：US15881021

    申请日：2018-01-26

    Applicant: Holley Performance Products, Inc.

    Inventor： Shane R. Weckerly ,  Larry J. Tipton

    IPC: F04B23/02 ,  F04B23/04 ,  F02M37/18 ,  F04B53/16 ,  F04B49/03 ,  F04B49/10

    Abstract: A pump assembly and methods of use and conversion including a sealed housing, at least one in-tank, not sealed pump contained in the sealed housing, an outlet check valve inside each pump, and an over pressure relief passage formed around the pumps in the sealed housing. The pump assembly may also include a common fuel inlet, a common fuel outlet; at least two of the pumps, a compact design, a mounting bracket, a sealed electrical inlet, a pre filter, a post filter, a pressure regulator, a returnless fuel supply, a pressure regulator, a return line.

    High pressure fuel pump and fuel supply system
    6.
    发明授权
    High pressure fuel pump and fuel supply system 有权

    公开(公告)号：US11028809B2

    公开(公告)日：2021-06-08

    申请号：US15962210

    申请日：2018-04-25

    Applicant: DENSO CORPORATION

    Inventor： Shuhei Yamamoto ,  Kazuhiro Onishi

    IPC: F02M59/06 ,  F02M63/00 ,  F02M63/02 ,  F02M59/36 ,  F02M59/34 ,  F02M59/44 ,  F02M37/18 ,  F02M37/00

    Abstract: A high pressure fuel pump includes: a pump body that forms a suction passage and a pressurizing chamber and slidably supports a plunger; and a control valve that opens a connection between the suction passage and the pressurizing chamber in a suction stroke, during which the plunger is driven toward a suction side for suctioning fuel into the pressurizing chamber, while the control valve controls closing timing, at which the connection between the suction passage and the pressurizing chamber is closed by the control valve in a delivery stroke, during which the plunger is driven toward a delivery side for delivering the fuel out of the pressurizing chamber. The pump body forms a release passage that is communicated with the suction passage. The release passage relieves the fuel, which is pressurized by the plunger, from the pressurizing chamber before the closing timing during the delivery stroke.

    FUEL SYSTEM HAVING A JET PUMP
    8.
    发明申请
    FUEL SYSTEM HAVING A JET PUMP 审中-公开

    公开(公告)号：US20200003166A1

    公开(公告)日：2020-01-02

    申请号：US16025742

    申请日：2018-07-02

    Applicant: DELPHI TECHNOLOGIES IP LIMITED

    Inventor： Luis M. Porras ,  Javier A. Sanchez

    IPC: F02M37/02 ,  F04F5/10 ,  F02M37/18 ,  F04F5/46

    Abstract: A fuel system includes a fuel pump having an inlet and an outlet. The fuel system also includes a jet pump assembly having a first fuel passage defined by a first tube, the first fuel passage having a first fuel passage inlet and a first fuel passage outlet; and a second fuel passage defined by a second tube and connected to the outlet of the fuel pump, the second fuel passage having an exit orifice which discharges a first flow into the first fuel passage which draws a second flow into the first fuel passage through the first fuel passage inlet such that the first flow and the second flow combine in the first fuel passage and exit the first fuel passage through the first fuel passage outlet. The second fuel passage also has an initial orifice arranged upstream from, and in series with, the exit orifice.

    Method and apparatus for controlling fuel pressure
    10.
    发明授权
    Method and apparatus for controlling fuel pressure 有权

    公开(公告)号：US10253718B2

    公开(公告)日：2019-04-09

    申请号：US15359766

    申请日：2016-11-23

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Thomas L. Grime ,  Yvan De Blois

    IPC: F02D41/30 ,  F02M37/00 ,  F02M37/08 ,  F02M37/18 ,  F02M55/02 ,  F02D41/38 ,  F02M63/00 ,  F02D41/14

    Abstract: An engine fuel system includes a fuel delivery system including a first fuel pump that is coupled to a pressure relief valve that is arranged in parallel with a second fuel pump. The first fuel pump is disposed to deliver pressurized fuel to the second fuel pump and the pressure relief valve, and the second fuel pump is disposed to deliver pressurized fuel to the fuel rail. A controller characterizes the first fuel pump to determine a relationship between a fuel pump speed and a fuel pump current at a setpoint pressure for the pressure relief valve. A feed-forward pump speed command is determined based upon a target fuel pressure and a fuel flowrate. A closed-loop pump speed is commanded based upon the characterization of the fuel pump. The first fuel pump is controlled to deliver fuel to the second fuel pump based thereon.

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