公开(公告)号：US11441492B2

公开(公告)日：2022-09-13

申请号：US16887955

申请日：2020-05-29

Applicant: GM Global Technology Operations LLC

Inventor： Michael Kaczmar ,  Michael A. Smith ,  Amanda Keech ,  Pratap S. Murthy ,  Jason M. Moore

IPC: F02D13/06 ,  F01L1/053 ,  F01L13/00 ,  F02D33/00 ,  F02D13/02 ,  F02D41/00 ,  F02D41/12 ,  F01L1/047

Abstract: An automobile vehicle overhead camshaft system includes multiple camshafts individually having multiple sliding camshaft barrels. Opposed ends of the camshaft barrels individually have a zero-lift lobe. Multiple intake valves are operated by a first one of the camshafts and multiple exhaust valves are operated by a second one of the camshafts. Multiple actuators operate during a deceleration cylinder cut-off (DCCO) mode to slidably displace the camshaft barrels to position the zero-lift lobe of predetermined ones of the multiple sliding camshaft barrels into contact with at least one of: all of the intake valves; or all of the exhaust valves.

公开(公告)号：US20210372332A1

公开(公告)日：2021-12-02

申请号：US16887955

申请日：2020-05-29

Applicant: GM Global Technology Operations LLC

Inventor： Michael Kaczmar ,  Michael A. Smith ,  Amanda Keech ,  Pratap S. Murthy ,  Jason M. Moore

IPC: F02D13/06 ,  F01L1/053 ,  F01L13/00 ,  F02D33/00 ,  F02D41/00 ,  F02D13/02

Abstract: An automobile vehicle overhead camshaft system includes multiple camshafts individually having multiple sliding camshaft barrels. Opposed ends of the camshaft barrels individually have a zero-lift lobe. Multiple intake valves are operated by a first one of the camshafts and multiple exhaust valves are operated by a second one of the camshafts. Multiple actuators operate during a deceleration cylinder cut-off (DCCO) mode to slidably displace the camshaft barrels to position the zero-lift lobe of predetermined ones of the multiple sliding camshaft barrels into contact with at least one of: all of the intake valves; or all of the exhaust valves.