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公开(公告)号：US11719207B2
公开(公告)日：2023-08-08
申请号：US17778590
申请日：2019-11-22
Applicant: Cummins Inc.
Inventor： Donald J. Benson , Bela Doszpoly , Eric A. Benham , Ahmad M. Sabri , Richard E. Duncan
CPC classification number: F02M59/442 , F02M59/02
Abstract: A plunger is provided for reciprocating inside the barrel of a fuel pump. The plunger has a proximal end and a distal end. The proximal end of the plunger includes a cavity that defines a depressed volume within the plunger. A volume filler is disposed in the cavity, where the volume filler is constrained in the cavity by a retaining element.
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公开(公告)号：US11486386B2
公开(公告)日：2022-11-01
申请号：US17070299
申请日：2020-10-14
Applicant: Cummins Inc.
Inventor： Donald J. Benson , Bela Doszpoly , Paul Peavler
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.
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公开(公告)号：US20160138586A1
公开(公告)日：2016-05-19
申请号：US14875259
申请日：2015-10-05
Applicant: CUMMINS INC.
Inventor： John D. Crofts , Scott R. Simmons , Wesley R. Thayer , Bela Doszpoly , David M. Rix , Anthony A. Shaull , David L. Buchanan
IPC: F04B53/16 , F04B19/22 , F04B15/02 , F04B53/08 , F04B53/18 , F04B53/14 , F04B53/10 , F02M37/04 , F04B53/04
CPC classification number: F04B53/162 , F02M37/043 , F02M59/102 , F02M59/442 , F04B1/0408 , F04B1/0421 , F04B1/0448 , F04B15/02 , F04B19/22 , F04B53/04 , F04B53/08 , F04B53/10 , F04B53/14 , F04B53/143 , F04B53/18
Abstract: A fuel pump is disclosed wherein a substantially cylindrical plunger bore is provided with an annular drain groove fluidically coupled to a drain duct. A pump plunger is driven by a drive system located in a separate mechanical compartment that holds a reservoir of lubricating oil. An annular seal is provided adjacent the drain groove substantially at the end of the bore and retained in position by a seal support. Exemplary embodiments provide the drain groove and seal as being positioned immediately adjacent one another so that the seal forms a lower wall of the drain groove.
Abstract translation: 公开了一种燃料泵，其中基本上圆柱形的柱塞孔设置有流体连接到排水管的环形排水沟。 泵柱塞由驱动系统驱动，该驱动系统位于容纳润滑油的单独的机械隔室中。 环形密封件基本上在孔的端部附近设置在排水槽附近，并通过密封支撑件保持在适当位置。 示例性实施例将排水沟和密封件设置成彼此紧邻地定位，使得密封件形成排水沟的下壁。
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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
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.
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