Invention Grant
US08224538B2 Apparatus and method for using transmission output torque data to control gear change
有权
使用变速器输出扭矩数据来控制变速的装置和方法
- Patent Title: Apparatus and method for using transmission output torque data to control gear change
- Patent Title (中): 使用变速器输出扭矩数据来控制变速的装置和方法
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Application No.: US12616686Application Date: 2009-11-11
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Publication No.: US08224538B2Publication Date: 2012-07-17
- Inventor: Zhen Zhang , Shushan Bai , John R. Maten
- Applicant: Zhen Zhang , Shushan Bai , John R. Maten
- 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: G06F7/00
- IPC: G06F7/00

Abstract:
An automatic transmission includes gears, torque-transmitting mechanisms, interconnecting members, an input member and an output member. A method of controlling the automatic transmission includes data acquisition from the output shaft torque sensor, commanding a hydraulic fluid pressure pulse time and a pressure pulse value to engage a first torque-transmitting mechanism, calculating a rate-of-change of a first data output from the output shaft torque sensor, calculating a rate-of-change of a second data output from the output shaft torque sensor, comparing the results of the rate-of-change calculations and adjusting the hydraulic fluid pressure pulse time and a pressure pulse value if the rate of change of the second data output is not equal to the rate-of-change of the first data output.
Public/Granted literature
- US20110111921A1 APPARATUS AND METHOD FOR USING TRANSMISSION OUTPUT TORQUE DATA TO CONTROL GEAR CHANGE Public/Granted day:2011-05-12
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