Invention Grant
US08210976B2 Control system for an automatic transmission having multiple default modes
有权
具有多种默认模式的自动变速器控制系统
- Patent Title: Control system for an automatic transmission having multiple default modes
- Patent Title (中): 具有多种默认模式的自动变速器控制系统
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Application No.: US12491291Application Date: 2009-06-25
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Publication No.: US08210976B2Publication Date: 2012-07-03
- Inventor: Zhe Xie , Bret M. Olson , Robert L. Moses , Vijay A. Neelakantan
- Applicant: Zhe Xie , Bret M. Olson , Robert L. Moses , Vijay A. Neelakantan
- 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: F16H31/00
- IPC: F16H31/00 ; F16H61/38 ; F16H61/40 ; F16H61/26

Abstract:
A hydraulic control system for a automatic transmission includes a plurality of solenoids and valves in fluid communication with a plurality of shift actuators. The shift actuators are operable to actuate a plurality of torque transmitting devices. Selective activation of combinations of the solenoids allows for a pressurized fluid to activate at least one of the shift actuators. The solenoids are configured to provide a forward gear ratio and a reverse gear ratio when the solenoids are deengerized.
Public/Granted literature
- US20100326542A1 CONTROL SYSTEM FOR AN AUTOMATIC TRANSMISSION HAVING MULTIPLE DEFAULT MODES Public/Granted day:2010-12-30
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