Full clutch slip power shift of a dual clutch transmission

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United States of America Patent

PATENT NO 9556955
APP PUB NO 20150226321A1
SERIAL NO

14590324

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A system for operating a dual clutch transmission, including launch/creep controller, shift logic, and a clutch control assembly. The shift logic is configured to intercept a torque command including a target clutch torque from the launch/creep controller as it transmits the target clutch torque to the clutch assembly. The shift logic engages a preparation phase that increases torque on an on-coming clutch to a prefill torque. The shift logic then engages a torque phase that transfers torque between the off-going clutch and the on-coming clutch by simultaneously decreasing the off-going clutch torque and increasing the on-coming clutch torque. The off-going clutch and the on-coming clutch remain in a slipping state that maintains the target clutch torque during the transfer.

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Patent Owner(s)

Patent OwnerAddress
EATON CUMMINS AUTOMATED TRANSMISSION TECHNOLOGIES LLC13100 EAST MICHIGAN AVE GALESBURG MI 49053

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Connolly, Thomas R Portage, US 8 76
Dunfee,, II Jeffrey S Kalamazoo, US 22 100

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