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公开(公告)号:US10344734B2
公开(公告)日:2019-07-09
申请号:US15637507
申请日:2017-06-29
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Timothy P Philippart , Douglas R Verner , Dimitri Karatsinides , Timothy Karnjate
Abstract: A method of determining a sliding camshaft actuator pin position based on engine crankshaft angle includes commanding a sliding camshaft actuator to perform a valve step shift, and monitoring an actuator's pin position during the valve step shift command. At least one crank angle is measured when the actuator pin position reaches or exceeds at least one predetermined pin position threshold and at least one remedial action is performed when the actuator pin position does not correlate to the at least one measured crank angle.
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公开(公告)号:US20190003446A1
公开(公告)日:2019-01-03
申请号:US15637507
申请日:2017-06-29
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Timothy P. Philippart , Douglas R. Verner , Dimitri Karatsinides , Timothy Karnjate
CPC classification number: F02P7/0775 , F01L1/25 , F01L13/0036 , F01L2013/0052 , F01L2013/113 , F01L2800/14 , F01L2820/031 , F01L2820/041 , F02B77/082 , F02D41/009 , F02D41/22
Abstract: A method of determining a sliding camshaft actuator pin position based on engine crankshaft angle includes commanding a sliding camshaft actuator to perform a valve step shift, and monitoring an actuator's pin position during the valve step shift command. At least one crank angle is measured when the actuator pin position reaches or exceeds at least one predetermined pin position threshold and at least one remedial action is performed when the actuator pin position does not correlate to the at least one measured crank angle.
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