Invention Grant
- Patent Title: Valve lift control systems and methods for engine startability
- Patent Title (中): 气门升程控制系统及发动机启动方法
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Application No.: US14487599Application Date: 2014-09-16
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Publication No.: US09488078B2Publication Date: 2016-11-08
- Inventor: Scot A. Douglas
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Main IPC: F01L1/34
- IPC: F01L1/34 ; F01L9/04 ; F01L1/04 ; F01L1/344 ; F02N19/00 ; F02D41/06 ; F02D41/00

Abstract:
A startup/shutdown control module selectively generates an engine startup command when an engine of the vehicle is off. A starter control module applies power to a starter motor when the engine startup command is generated. A valve control module, in response to the generation of the engine startup command: operates intake valves of cylinders of the engine in a low lift mode when an engine temperature is less than a predetermined temperature; and operates the intake valves of the cylinders of the engine in a high lift mode when the engine temperature is greater than the predetermined temperature.
Public/Granted literature
- US20150377090A1 VALVE LIFT CONTROL SYSTEMS AND METHODS FOR ENGINE STARTABILITY Public/Granted day:2015-12-31
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