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公开(公告)号：US20240401506A1
公开(公告)日：2024-12-05
申请号：US18796075
申请日：2024-08-06
Applicant: Cummins, Inc.
Inventor： Gregory J. MITCHUM , Adam C. Cecil , David M. BARNES , Scott R. BARDAKJY , Nathaniel P. HASSALL
Abstract: An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders. A valve train is provided for opening and closing intake and exhaust valves of the cylinders during nominal engine operations. The valve train is also configured for cylinder deactivation and to provide one or more selected lift profiles for opening and closing of the intake and/or exhaust valves.
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公开(公告)号：US20180135727A1
公开(公告)日：2018-05-17
申请号：US15564415
申请日：2015-04-14
Applicant: CUMMINS INC.
Inventor： David M. BARNES , Adam Jordan PATE
CPC classification number: F16F15/265 , F16F15/283
Abstract: Variable counterweight apparatuses, systems and methods. The variable counterweight system includes at least one rotatable actuator, a first variable counterweight assembly, and a second variable counterweight assembly. The first variable counterweight assembly is rotatably coupled to the rotatable actuator to rotate about a first axis. The first variable counterweight assembly is configured to geometrically reconfigure so as to change a first variable counterweight assembly center of gravity position with respect to the first variable counterweight assembly. The second variable counterweight assembly is rotatably coupled to the rotatable actuator to rotate about a second axis. The second variable counterweight assembly is configured to geometrically reconfigure so as to change a second variable counterweight assembly center of gravity position with respect to the second variable counterweight assembly.
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公开(公告)号：US20240360777A1
公开(公告)日：2024-10-31
申请号：US18688352
申请日：2022-09-01
Applicant: Cummins, Inc.
Inventor： Gregory J. MITCHUM , Adam C. Cecil , David M. BARNES , Scott R. BARDAKJY , Nathaniel P. HASSALL
CPC classification number: F01L1/181 , F01L1/047 , F01L1/20 , F01L13/0005 , F01L2013/001
Abstract: An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders. A valve train is provided for opening and closing intake and exhaust valves of the cylinders during nominal engine operations. The valve train is also configured for cylinder deactivation and to provide one or more selected lift profiles for opening and closing of the intake and/or exhaust valves.
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公开(公告)号：US20240125253A1
公开(公告)日：2024-04-18
申请号：US18484053
申请日：2023-10-10
Applicant: Cummins Inc. , JACOBS VEHICLE SYSTEMS, INC.
Inventor： Bruce A. SWANBON , Justin D. BALTRUCKI , Robb JANAK , G. Michael GRON, JR. , John MANDELL , Marc B. SILVA , Tyler HINES , Matei ALEXANDRU , Austen P. METSACK , Gabriel S. ROBERTS , P. Douglas AUBIN , Nathaniel P. HASSALL , John Jerl PURCELL, III , Adam C. CECIL , David M. BARNES
Abstract: A valve actuation system comprises a first arm having a first arm contact surface and operatively connected to a valve actuation motion. A second arm having a second arm contact surface is operatively connected to the at least one engine valve. A discrete lost motion device is provided that is controllable between a first, motion conveying state and a second, motion absorbing state. The discrete lost motion devices comprises a plunger contact surface and a housing contact surface. The housing contact surface is configured to engage one of the first or second arm contact surfaces, and the plunger contact surface is configured to engage another of the first and the second arm contact surfaces. The first and second arm contact surfaces, the housing contact surface and the first plunger contact surface are configured to support the discrete lost motion device between the first arm and the second arm.
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