Invention Grant
- Patent Title: Control system and method for transmission clutch control
- Patent Title (中): 变速离合器控制的控制系统和方法
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Application No.: US13157693Application Date: 2011-06-10
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Publication No.: US08972131B2Publication Date: 2015-03-03
- Inventor: Steven Dietz , Gabriel M. Gibson , David Szpara , Brandon E. Hancock
- Applicant: Steven Dietz , Gabriel M. Gibson , David Szpara , Brandon E. Hancock
- 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: F16D48/06
- IPC: F16D48/06 ; F16H61/06 ; F16H61/08 ; F16H61/686

Abstract:
A control system for a transmission includes an actuator module, a timer module, and a pulse module. The actuator module engages N hydraulic clutches and disengages M hydraulic clutches to operate the transmission in a gear ratio, wherein N and M are integers greater than zero. The timer module determines a first period starting when the transmission begins operating in the gear ratio. The pulse module selectively supplies a pressure pulse to P of the M hydraulic clutches based on the first period, wherein P is an integer greater than zero. A method for controlling a transmission is also provided.
Public/Granted literature
- US20120316741A1 CONTROL SYSTEM AND METHOD FOR TRANSMISSION CLUTCH CONTROL Public/Granted day:2012-12-13
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