Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control
Reexamination Certificate
2011-08-30
2011-08-30
Hellner, Mark (Department: 3663)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Transmission control
C477S176000
Reexamination Certificate
active
08010265
ABSTRACT:
A method for adjusting the slip of a torque converter for a plurality of selected engine speeds, transmission gears and engine torque. A sensor is used to determine vibrations transmitted through the torque converter to the driveline of the vehicle. The sensor signal is sent to a controller where it is converted to the frequency domain. If the amplitude of the frequency signal exceeds a threshold, then the algorithm increases/decreases the converter slip until the driveline vibrations equal a threshold.
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Web Forum post by “kamek”. “Clutch vibration/shudder when engaging gear—clutch slipping?” http://www.e90post.com/forums/showthread.php?t=463335. Dec. 8-11, 2010. Downloaded on May 3, 2011.
Lee Chunhao J.
Otanez Paul G
Samie Farzad
Diacou Ari M
GM Global Technology Operations LLC
Hellner Mark
Miller John A.
Miller IP Group, PLC
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