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公开(公告)号：US20230213011A1
公开(公告)日：2023-07-06
申请号：US18181007
申请日：2023-03-09
Applicant: Cummins Inc.
Inventor： Roberto M. Munoz , Amanda Baker , Yip Kwok , Thomas M. Yeager
CPC classification number: F02M59/102 , F02M59/08
Abstract: The disclosure relates to fuel pump housings and fuel pump systems incorporating the same. The fuel pump housing includes at least one tappet housing portion configured to receive at least one tappet assembly and a main bore portion fluidly coupled with the at least one tappet housing portion such that the main bore receives a camshaft. The main bore includes an uncut portion and at least one relief cut portion proximal to the at least one tappet housing portion. The uncut portion defines a first centerline, and the relief cut portion defines a second centerline offset from the first centerline.
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Patent Agency Ranking
公开(公告)号：US10519911B2
公开(公告)日：2019-12-31
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
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.
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公开(公告)号：US12203433B2
公开(公告)日：2025-01-21
申请号：US18181113
申请日：2023-03-09
Applicant: Cummins Inc.
Inventor： Roberto M. Munoz , Amanda Baker , Yip Kwok , Thomas M. Yeager
Abstract: Disclosed herein are devices, systems, and methods relating to high-pressure fuel pump designs and features. A high-pressure fuel pump assembly includes a body, a camshaft, and an embossment. The body has a forward end and a rearward end opposite thereof and configured to couple to a low-pressure fuel pump. The camshaft is received and secured within a central bore of the body so as to be rotationally movable within the central bore. A coupler end of the camshaft is configured to couple to a drive shaft of the low-pressure fuel pump. The embossment includes at least one fastener boss configured to receive a fastener to couple the low-pressure fuel pump to the high-pressure fuel pump assembly. The embossment is formed at the rearward end of the body such that thermal stresses that cause geometrical deformations at the embossment are reduced through a range of engine temperature operating conditions.
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公开(公告)号：US12012917B2
公开(公告)日：2024-06-18
申请号：US18181007
申请日：2023-03-09
Applicant: Cummins Inc.
Inventor： Roberto M. Munoz , Amanda Baker , Yip Kwok , Thomas M. Yeager
CPC classification number: F02M59/102 , F02M59/08
Abstract: The disclosure relates to fuel pump housings and fuel pump systems incorporating the same. The fuel pump housing includes at least one tappet housing portion configured to receive at least one tappet assembly and a main bore portion fluidly coupled with the at least one tappet housing portion such that the main bore receives a camshaft. The main bore includes an uncut portion and at least one relief cut portion proximal to the at least one tappet housing portion. The uncut portion defines a first centerline, and the relief cut portion defines a second centerline offset from the first centerline.
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公开(公告)号：US20230213012A1
公开(公告)日：2023-07-06
申请号：US18181113
申请日：2023-03-09
Applicant: Cummins Inc.
Inventor： Roberto M. Munoz , Amanda Baker , Yip Kwok , Thomas M. Yeager
CPC classification number: F02M59/102 , F02M59/44 , F02M2200/85
Abstract: Disclosed herein are devices, systems, and methods relating to high-pressure fuel pump designs and features. A high-pressure fuel pump assembly includes a body, a camshaft, and an embossment. The body has a forward end and a rearward end opposite thereof and configured to couple to a low-pressure fuel pump. The camshaft is received and secured within a central bore of the body so as to be rotationally movable within the central bore. A coupler end of the camshaft is configured to couple to a drive shaft of the low-pressure fuel pump. The embossment includes at least one fastener boss configured to receive a fastener to couple the low-pressure fuel pump to the high-pressure fuel pump assembly. The embossment is formed at the rearward end of the body such that thermal stresses that cause geometrical deformations at the embossment are reduced through a range of engine temperature operating conditions.
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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
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.
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