Transmission engagement control during an engine restart of...

Details Transmission engagement control during an engine restart of... Transmission engagement control during an engine restart of...

2009-05-01

2011-11-22

Wright, Dirk (Department: 3655)

Interrelated power delivery controls, including engine control

Plural engines

Electric engine

Reexamination Certificate

active

08062171

ABSTRACT:
A method for controlling transmission engagement during restart of an engine in a hybrid electric powertrain includes moving a gear lever between a forward position and reverse position, using electric power to drive an auxiliary pump whose output causes a transmission to engage a gear that corresponds to the lever position and to stroke, to zero torque capacity, an oncoming clutch that corresponds to said gear, initiating the restart, and discontinuing use of the auxiliary pump.

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