公开(公告)号：US12163449B2

公开(公告)日：2024-12-10

申请号：US18212657

申请日：2023-06-21

Applicant: Cummins Inc.

Inventor： Nathaniel P. Hassall ,  John Jerl Purcell, III ,  Stephen D. Cofer, Jr. ,  David M. Barnes ,  Aaron S. Quinton ,  Reid M. Irish

IPC: F01M1/02 ,  F01M1/00 ,  F01M1/08 ,  F01M1/10 ,  F01M5/00 ,  F01M11/00 ,  F01M11/02

Abstract: The present disclosure provides a lubrication system comprising: a pump having an inlet in fluid communication with a lubricant source and an outlet; a cooler having an inlet in fluid communication with the outlet of the pump and an outlet; a lubrication filter having an inlet in fluid communication with the outlet of the cooler and an outlet; a first delivery path in fluid communication with the outlet of the lubrication filter, the first delivery path being configured to deliver cooled, filtered lubricant to a bearing system of an engine; and a second delivery path in fluid communication with the outlet of the pump, the second delivery path being configured to deliver uncooled, unfiltered lubricant to piston cooling nozzles of the engine.

公开(公告)号：US11719139B2

公开(公告)日：2023-08-08

申请号：US16346403

申请日：2017-10-31

Applicant: Cummins Inc.

Inventor： Nathaniel P. Hassall ,  John Jerl Purcell, III ,  Stephen D. Cofer, Jr. ,  David M. Barnes ,  Aaron S. Quinton ,  Reid M. Irish

IPC: F01M1/02 ,  F01M1/08 ,  F01M1/10 ,  F01M5/00 ,  F01M11/00 ,  F01M1/00 ,  F01M11/02

CPC classification number: F01M1/02 ,  F01M1/00 ,  F01M1/08 ,  F01M1/10 ,  F01M5/002 ,  F01M11/0004 ,  F01M2001/1007 ,  F01M2011/026

Abstract: The present disclosure provides a lubrication system comprising: a pump having an inlet in fluid communication with a lubricant source and an outlet; a cooler having an inlet in fluid communication with the outlet of the pump and an outlet; a lubrication filter having an inlet in fluid communication with the outlet of the cooler and an outlet; a first delivery path in fluid communication with the outlet of the lubrication filter, the first delivery path being configured to deliver cooled, filtered lubricant to a bearing system of an engine; and a second delivery path in fluid communication with the outlet of the pump, the second delivery path being configured to deliver uncooled, unfiltered lubricant to piston cooling nozzles of the engine.

公开(公告)号：US10808607B2

公开(公告)日：2020-10-20

申请号：US15840300

申请日：2017-12-13

Applicant: Cummins Inc.

Inventor： John M. Antonevich ,  Reid Irish ,  Stephen D. Cofer, Jr. ,  Kent H. Clark ,  Garrett Blum ,  Michael Kosinski ,  Beth Wagner ,  Mark Gray

IPC: F02B75/04 ,  F16J1/22 ,  F16J7/00 ,  F16C7/04 ,  F16C7/06

Abstract: An energy storage device is provided for a combustion chamber of an internal combustion engine. The energy storage device includes first and second end connectors connected to respective ones of a piston and crankshaft, and a flexible connection rod portion rotatably connected with the first and second end connectors. The flexible connection rod portion elastically buckles above a predetermined cylinder pressure threshold to store combustion energy and provide a more constant pressure combustion process.

公开(公告)号：US11649851B2

公开(公告)日：2023-05-16

申请号：US17198912

申请日：2021-03-11

Applicant: Cummins Inc.

Inventor： Stephen D. Cofer, Jr.

IPC: F16C9/02 ,  F16C33/04 ,  F16C17/04

CPC classification number: F16C9/02 ,  F16C17/04 ,  F16C33/046 ,  F16C2360/22

Abstract: Improved engine crankshaft thrust bearing includes an arrangement in which the thrust bearing can be employed with a first type of crankshaft for a replacement engine block and also with a different, second type of crankshaft that can also be employed in the replacement engine block. The second type of crankshaft was previously used in the engine block being replaced.

公开(公告)号：US11466600B1

公开(公告)日：2022-10-11

申请号：US17202522

申请日：2021-03-16

Applicant: Cummins Inc.

Inventor： Stephen D. Cofer, Jr. ,  Ella Michelle Morris ,  Nickolas A. Springmeyer

IPC: F01M1/10 ,  F01M1/08 ,  F01M11/02

Abstract: An internal combustion engine includes an engine lubrication fluid system with a main rifle for distribution of filtered lubrication fluid to a plurality of engine components through a plurality of secondary rifles connected to the main rifle. The system also includes a bypass for bypassing the filter in response to certain engine operating conditions. The bypass is connected to at least one of the secondary rifles so that unfiltered lubrication fluid is not provided to certain engine components under filter bypass conditions, and provided directly to certain other engine components for which unfiltered lubrication fluid is less problematic.