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公开(公告)号：US20220010870A1
公开(公告)日：2022-01-13
申请号：US17293599
申请日：2019-02-12
申请人： Cummins Inc.
发明人： Steven Valentin , Ross A. Phillips , Romaine O. Edwards , Eric A. Benham , Marian Trocki , Richard E. Duncan , Neil Jeffries , Karthik Sethuraman
摘要： A tappet assembly (100) used in mechanical equipment includes a tappet body (108) having a cylindrical shape and including a lower carrier portion (152) and an upper shell portion (158) having a cavity (150) defined by an inner wall (160) of the upper shell portion (158) and a top surface (154) of the lower carrier portion (152). The lower carrier portion (152) and the upper shell portion (158) are integrally formed as a single-piece unit. A post (162) extends upwardly from the top surface (154) of the lower carrier portion (152) and is configured to reduce a peak contact pressure associated with the tappet body (108).
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公开(公告)号：US20230265817A1
公开(公告)日：2023-08-24
申请号：US18310181
申请日：2023-05-01
申请人： Cummins Inc.
CPC分类号： F02M55/005 , F02M55/025
摘要： High-pressure fuel pumps and systems incorporating the same are disclosed. The fuel pump includes a housing with at least one fluid feed port, a barrel with at least one fluid receiving port, and a clamp to secure the barrel to the housing. The barrel has a first surface configured to contact a second surface of the housing to form a groove. The groove provides fluid communication between the at least one fluid feed port of the housing and the at least one fluid receiving port of the barrel.
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公开(公告)号：US20230304482A1
公开(公告)日：2023-09-28
申请号：US18326230
申请日：2023-05-31
申请人： Cummins Inc.
CPC分类号： F04B7/0076 , F04B53/1022 , F04B53/1035 , F02M59/466
摘要： A pump inlet valve includes a valve body and a plunger assembly. The valve body includes a valve body cavity. The plunger assembly is arranged within the valve body cavity and includes a plunger body, a plunger barrel formed at the plunger body so as to form a plunger barrel volume, and a plunger. The plunger is configured to move within the plunger barrel to thereby allow a fluid to flow past the plunger assembly when the plunger is in an open position and to inhibit the fluid from flowing past the plunger assembly when the plunger is in a closed position. The plunger is configured to allow continuous fluid communication between the plunger barrel volume and a supply inlet, through which fluid is supplied to the pump inlet valve.
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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
申请人： Cummins Inc.
CPC分类号： F02M59/442 , F02M59/02
摘要： 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：US20240060464A1
公开(公告)日：2024-02-22
申请号：US18497382
申请日：2023-10-30
申请人： Cummins Inc.
发明人： Eric A. Benham , Karthik Sethuraman , Donald J. Benson , Michael Andrew Lucas , Richard E. Duncan
CPC分类号： F02M59/366 , F02M63/0035 , F02M63/0017
摘要： At least some embodiments of the present disclosure are directed to pump assemblies. In some embodiments, the pump is a high-pressure pump for an engine. The pump includes: an inlet valve configured to receive fuel; an armature coupled to the inlet valve and configured to actuate the inlet valve; and a pump barrel comprising a barrel guide, the barrel guide comprising a protrusion and configured to guide a motion of the armature.
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