Invention Grant
- Patent Title: System and method for controlling hydraulic pressure in electro-hydraulic valve actuation systems
- Patent Title (中): 电动液压阀驱动系统液压控制系统及方法
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Application No.: US12910212Application Date: 2010-10-22
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Publication No.: US08839750B2Publication Date: 2014-09-23
- Inventor: Daniel G. Brennan , Craig D. Marriott , Joel Cowgill , Matthew A. Wiles , Kenneth James Patton
- Applicant: Daniel G. Brennan , Craig D. Marriott , Joel Cowgill , Matthew A. Wiles , Kenneth James Patton
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Main IPC: F01L1/34
- IPC: F01L1/34 ; F01L9/02 ; F02D13/06 ; F02D13/02 ; F01L13/00 ; F02D13/08
Abstract:
A control system for an engine includes a first lift control module and a second lift control module. The first lift control module increases lift of M valves of the engine to a predetermined valve lift during a period before disabling or re-enabling N valves of the engine. The second lift control module decreases the lift of the M valves to a desired valve lift during a period after enabling or re-enabling the N valves of the engine, wherein N and M are integers greater than or equal to one.
Public/Granted literature
- US20120097121A1 SYSTEM AND METHOD FOR CONTROLLING HYDRAULIC PRESSURE IN ELECTRO-HYDRAULIC VALVE ACTUATION SYSTEMS Public/Granted day:2012-04-26
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