Up-shift control in an automatic transmission with negative input torque

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United States of America Patent

PATENT NO 8489295
APP PUB NO 20090319143A1
SERIAL NO

12335900

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A transmission control module including a shift control module that generates an enable signal when an up-shift is requested and the engine torque is below a threshold torque value. A turbine speed profile determination module that selectively generates a desired turbine speed profile. The shift control module controls a clutch pressure of an off-going clutch based on a measured turbine speed and the desired turbine speed profile when the enable signal is generated.

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Patent Owner(s)

  • GM GLOBAL TECHNOLOGY OPERATIONS LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Caldwell, Brett R New Palestine, US 9 67
Kluemper, Kevin L Monrovia, US 10 70
Merrion, Robert M Pittsboro, US 2 5
Runde, Jeffrey K Fishers, US 33 307

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