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    Injector method of switching between injection state and drain state
    1.
    发明授权
    Injector method of switching between injection state and drain state 有权

    公开(公告)号：US11028810B2

    公开(公告)日：2021-06-08

    申请号：US16462853

    申请日：2017-11-22

    Applicant: Cummins Inc.

    Inventor： Richard D. Thomas ,  Lester L. Peters ,  Anthony A. Shaull

    IPC: F02M61/10 ,  F02M47/02 ,  F02M61/06 ,  F02M61/08 ,  F02M63/00

    Abstract: An injector is provided, comprising an injector body comprising an inlet passage configured to receive fluid, at least one injection outlet configured to deliver fluid, and a central bore, a needle valve disposed for reciprocal movement within the central bore between a closed position and an opened position; and an actuator configured to move the needle valve between the closed position wherein a first portion of a surface of the valve tip engages a first portion of a surface of the injector body to form a first seal that inhibits flow through the at least one injection outlet, and the opened position wherein a second portion of the surface of the valve tip engages a second portion of the surface of the injector body to form a second seal that inhibits flow through the drain outlet.

    INJECTOR METHOD OF SWITCHING BETWEEN INJECTION STATE AND DRAIN STATE
    3.
    发明申请
    INJECTOR METHOD OF SWITCHING BETWEEN INJECTION STATE AND DRAIN STATE 审中-公开

    公开(公告)号：US20200217286A1

    公开(公告)日：2020-07-09

    申请号：US16462853

    申请日：2017-11-22

    Applicant: Cummins Inc.

    Inventor： Richard D. Thomas ,  Lester L. Peters ,  Anthony A. Shaull

    IPC: F02M61/10 ,  F02M47/02

    Abstract: An injector is provided, comprising an injector body comprising an inlet passage configured to receive fluid, at least one injection outlet configured to deliver fluid, and a central bore, a needle valve disposed for reciprocal movement within the central bore between a closed position and an opened position; and an actuator configured to move the needle valve between the closed position wherein a first portion of a surface of the valve tip engages a first portion of a surface of the injector body to form a first seal that inhibits flow through the at least one injection outlet, and the opened position wherein a second portion of the surface of the valve tip engages a second portion of the surface of the injector body to form a second seal that inhibits flow through the drain outlet.

    PINLESS TAPPET IN A COMMON RAIL HIGH PRESSURE FUEL PUMP
    4.
    发明申请
    PINLESS TAPPET IN A COMMON RAIL HIGH PRESSURE FUEL PUMP 审中-公开

    公开(公告)号：US20180135578A1

    公开(公告)日：2018-05-17

    申请号：US15567656

    申请日：2016-03-31

    Applicant: CUMMINS INC.

    Inventor： Anthony A. Shaull

    IPC: F02M59/10 ,  F02M59/44

    CPC classification number: F02M59/102 ,  F01L1/14 ,  F01L2105/00 ,  F01L2107/00 ,  F02M59/04 ,  F02M59/44 ,  F02M2041/1494 ,  F04B9/042

    Abstract: A system for preventing rotation of a tappet includes a tappet having an outer casing and a central axis which is configured to reciprocate linearly along the central axis. The outer casing includes a flat portion having a length along the central axis and having a width. Additionally, the system includes a lock bar fixed in position relative to the linear oscillation of the outer casing. The lock bar is positioned in proximity to the flat portion of the outer casing. Upon rotation of the outer casing about the central axis, the lock bar is configured to come into contact with the cuter casing and inhibit additional rotation of the outer casing.

    COMMON RAIL MULTI-CYLINDER FUEL PUMP WITH INDEPENDENT PUMPING PLUNGER EXTENSION
    7.
    发明申请
    COMMON RAIL MULTI-CYLINDER FUEL PUMP WITH INDEPENDENT PUMPING PLUNGER EXTENSION 审中-公开

    公开(公告)号：US20180171949A1

    公开(公告)日：2018-06-21

    申请号：US15571127

    申请日：2015-05-14

    Applicant: CUMMINS INC.

    Inventor： Anthony A. Shaull ,  Lester L. Peters ,  Brian M. Watson ,  Roberto M. Munoz

    IPC: F02M59/08 ,  F02M59/10 ,  F02M59/48 ,  F04B1/04 ,  F04B1/053 ,  F04B9/04

    Abstract: A fuel pump for an internal combustion engine is provided comprising a barrel including a central bore having a longitudinal axis, a plunger disposed partially in the central bore and movable along the longitudinal axis, a spring retainer, a first coil spring having a proximal end in contact with a first section of the barrel and a distal end in contact with the spring retainer to urge the spring retainer into engagement with a tappet assembly, an extender element coupled to the plunger, and a second coil spring having a proximal end in contact with a second section of the barrel and a distal end in contact with the extender element to urge the plunger toward the spring retainer, wherein the extender element includes a counter-bore to couple the extender element to the plunger.

    High pressure common rail fuel pump outlet check valve retainer
    9.
    发明授权
    High pressure common rail fuel pump outlet check valve retainer 有权

    公开(公告)号：US11624359B2

    公开(公告)日：2023-04-11

    申请号：US17481381

    申请日：2021-09-22

    Applicant: Cummins Inc.

    Inventor： Anthony A. Shaull ,  Tamas Rauznitz ,  Brian M. Watson ,  Patrick D. Chasteen ,  Luke Allen Jones

    IPC: F04B53/10 ,  F16K15/06 ,  F16K15/04 ,  F04B19/22 ,  F16K15/02 ,  F02M59/46 ,  F02M59/02 ,  F02M63/00

    Abstract: A pumping element comprises a first flow chamber; a second flow chamber in fluid connection with the first flow chamber, the second flow chamber including a shoulder; a check valve including a first insert and a second insert, the first insert being movable between a first position wherein the first insert forms a seal that inhibits fluid flow between the first and second flow chambers and a second position wherein the first insert permits fluid flow between the first and second flow chambers, the second insert being inserted into the second flow chamber to an extent limited by the shoulder; and a spring having a first end engaging the first insert and a second end engaging the second insert; wherein the first insert moves from the first position to the second position against a biasing force of the spring in response to pressurized fluid in the first flow chamber.

    HIGH PRESSURE COMMON RAIL FUEL PUMP OUTLET CHECK VALVE SPRING RETAINER METHOD
    10.
    发明申请
    HIGH PRESSURE COMMON RAIL FUEL PUMP OUTLET CHECK VALVE SPRING RETAINER METHOD 有权

    公开(公告)号：US20220003231A1

    公开(公告)日：2022-01-06

    申请号：US17481381

    申请日：2021-09-22

    Applicant: Cummins Inc.

    Inventor： Anthony A. Shaull ,  Tamas Rauznitz ,  Brian M. Watson ,  Patrick D. Chasteen ,  Luke Allen Jones

    IPC: F04B53/10 ,  F16K15/06 ,  F16K15/04 ,  F04B19/22 ,  F02M59/46 ,  F02M59/02

    Abstract: The present disclosure generally relates to a pumping element of a fuel pump for an internal combustion engine wherein the pumping element comprises a first flow chamber; a second flow chamber in fluid connection with the first flow chamber, the second flow chamber including a shoulder; a check valve including a first insert and a second insert, the first insert being movable between a first position wherein the first insert forms a seal that inhibits fluid flow between the first and second flow chambers and a second position wherein the first insert permits fluid flow between the first and second flow chambers, the second insert being inserted into the second flow chamber to an extent limited by the shoulder; and a spring having a first end engaging the first insert and a second end engaging the second insert; wherein the first insert moves from the first position to the second position against a biasing force of the spring in response to pressurized fluid in the first flow chamber.

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