Invention Application
- Patent Title: AUTOMATIC TRANSMISSION INPUT CLUTCH CONTROL
- Patent Title (中): 自动变速箱输入离合器控制
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Application No.: US13767320Application Date: 2013-02-14
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Publication No.: US20130311055A1Publication Date: 2013-11-21
- Inventor: Christopher E. Whitney , Klaus Pochner , Colin Hultengren , Krishnendu Kar
- 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: B60W10/06
- IPC: B60W10/06 ; B60W10/02

Abstract:
A method of controlling the performance of a vehicle from a stationary condition includes operating a vehicle powertrain in a creep mode following the disengagement of a driver-operated braking device; and operating the vehicle powertrain in a launch mode following an engagement of a driver-operated acceleration device subsequent to the disengagement of the driver-operated braking device. Operating a vehicle powertrain in a creep mode includes: applying a friction clutch to couple an engine crankshaft of the vehicle powertrain with an input shaft of the transmission; determining a torque command to accelerate the vehicle powertrain at a predetermined rate; providing the torque command to an engine controller to controllably increase the input torque to the transmission; and operating a closed loop engine speed control module to prevent the crankshaft speed from slowing below a predetermined engine idle speed.
Public/Granted literature
- US08825319B2 Automatic transmission input clutch control Public/Granted day:2014-09-02
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