Method to reduce powertrain noise and vibration during engine start in hybrid vehicle

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United States of America Patent

PATENT NO 9108620
APP PUB NO 20130225363A1
SERIAL NO

13408127

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Abstract

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A method of controlling a powertrain system of a hybrid vehicle includes detecting a request to start an engine, incrementally applying torque to the powertrain system, and biasing the torque against a static member of the powertrain system, such as a parking pawl of a transmission when the transmission is disposed in a parking position, to remove lash from the powertrain system prior to starting the engine.

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Patent Owner(s)

Patent OwnerAddress
GM GLOBAL TECHNOLOGY OPERATIONS LLCP O BOX 300 MAIL CODE 482-C24-A65 DETROIT MI 48265

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chin, Poh Fong Novi, US 10 111
Grimmer, Michael J Troy, US 17 134
Lehmen, Allen J Howell, US 9 49

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