公开(公告)号：US20200370525A1

公开(公告)日：2020-11-26

申请号：US16989855

申请日：2020-08-10

Applicant: Cummins Inc.

Inventor： Roberto Medina Munoz ,  Matthew B. State ,  Samuel David Griffith Magnuson ,  Thomas M. Yeager

IPC: F02M59/44 ,  F02M59/02 ,  F02M59/48 ,  F16J15/3232 ,  F16J9/06

Abstract: A fuel pump for an internal combustion engine comprising a barrel having a longitudinal axis that spans between a proximal end and a distal end and a central bore therein. A plunger is disposed at least partially in the central bore and is configured to move along the longitudinal axis. An annular seal assembly is arranged around the circumference of the plunger wherein the annular seal assembly includes a seal retainer housing and a first seal and the seal retainer housing also retains the proximal end of the barrel thereon to form a second seal wherein the first and the second seals reduce the fuel to oil transfer rate and the oil to fuel transfer rate. The plunger and barrel are configured to be removed from and re-assembled with the annular seal assembly to enable service of these parts and the fuel pump.

公开(公告)号：US20230167794A1

公开(公告)日：2023-06-01

申请号：US18160556

申请日：2023-01-27

Applicant: Cummins Inc.

Inventor： Samuel David Griffith Magnuson ,  Donald J. Benson ,  Matthew B. State ,  Eric A. Benham ,  Aleksandr E. Lesin ,  Karthik Sethuraman

IPC: F02M59/10 ,  F02M59/06

CPC classification number: F02M59/102 ,  F02M59/06

Abstract: The present disclosure provides a high-pressure fuel pump including a barrel unit, a plunger, and a camshaft assembly having an eccentric cam lobe including a surface of the lobe. A follower is provided between the plunger and the surface of the lobe of the camshaft assembly to facilitate translation between the rotational movement of the camshaft assembly to axial movement of the plunger. The follower includes arcuate surfaces configured to mate with corresponding arcuate surfaces of the lobe of the cam shaft assembly and the plunger, respectively.

公开(公告)号：US20230287873A1

公开(公告)日：2023-09-14

申请号：US18318830

申请日：2023-05-17

Applicant: Cummins Inc.

Inventor： Donald J. Benson ,  Eric A. Benham ,  Ahmad M. Sabri ,  Samuel David Griffith Magnuson

IPC: F04B9/04 ,  F04B1/0417 ,  F02M59/10

CPC classification number: F04B9/042 ,  F02M59/102 ,  F04B1/0417

Abstract: A pumping assembly includes at least one removable unit barrel pumping assembly coupled to a housing of the pumping assembly. The pumping assembly further includes a drive member having a roller configured to engage a portion of the unit barrel pumping assembly during operation of the pumping assembly. The roller is configured to include a plurality of geometric shapes to distribute load forces during operation of the pumping assembly.

公开(公告)号：US20230235729A1

公开(公告)日：2023-07-27

申请号：US17910570

申请日：2020-03-11

Applicant: Cummins Inc. ,  SCANIA CV AB

Inventor： Eric A. Benham ,  Mustafa Utku Unal ,  Donald J. Benson ,  Samuel David Griffith Magnuson ,  Benjamin Scott Myser

IPC: F04B1/0452 ,  F04B9/04 ,  F04B1/0413 ,  F04B53/10

CPC classification number: F04B1/0452 ,  F04B9/04 ,  F04B1/0413 ,  F04B53/10

Abstract: The present disclosure provides a high-pressure fuel pump having barrel sets comprising offset, opposing barrel units within the same plane and having plungers disposed therein. The high-pressure fuel pump further includes a camshaft having at least one offset lobe and a cam ring encircling the lobe and in contact with the plungers, which translate the rotational movement of the camshaft to longitudinal movement of the plungers, controlling inflow, compression, and outflow of fuel within the pump.

公开(公告)号：US11268485B2

公开(公告)日：2022-03-08

申请号：US16989855

申请日：2020-08-10

Applicant: Cummins Inc.

Inventor： Roberto Medina Munoz ,  Matthew B. State ,  Samuel David Griffith Magnuson ,  Thomas M. Yeager

IPC: F02M59/44 ,  F02M59/02 ,  F16J9/06 ,  F02M59/10 ,  F02M59/48 ,  F16J15/3232 ,  F02M37/04

Abstract: A fuel pump for an internal combustion engine comprising a barrel having a longitudinal axis that spans between a proximal end and a distal end and a central bore therein. A plunger is disposed at least partially in the central bore and is configured to move along the longitudinal axis. An annular seal assembly is arranged around the circumference of the plunger wherein the annular seal assembly includes a seal retainer housing and a first seal and the seal retainer housing also retains the proximal end of the barrel thereon to form a second seal wherein the first and the second seals reduce the fuel to oil transfer rate and the oil to fuel transfer rate. The plunger and barrel are configured to be removed from and re-assembled with the annular seal assembly to enable service of these parts and the fuel pump.