Machine element or mechanism – Gearing – Interchangeably locked
Reexamination Certificate
2005-04-26
2005-04-26
Bonck, Rodney H. (Department: 3681)
Machine element or mechanism
Gearing
Interchangeably locked
C074S330000, C074S331000
Reexamination Certificate
active
06883394
ABSTRACT:
A method of controlling the positioning of the synchronizers of a dual clutch transmission having a plurality of synchronizers to selectively engage and disengage various gears sets, and a plurality of shift actuators adapted to move the synchronizers. The method includes the steps of initiating a control routine to move a synchronizer to a full engagement position with a gear set and monitoring the positions of all engaged synchronizers. The method also includes reinitiating the control routine to move a synchronizer back into the full engagement position when any engaged synchronizer slips out to a minimum engagement position. Further, the method includes initiating a control routine to move a synchronizer to a neutral position and monitoring the position of all disengaged synchronizers. Also, reinitiating the control routine to move a synchronizer back to the neutral position when any disengaged synchronizer drifts beyond a pre-determined neutral hysteresis position.
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Buchanan Mark
Firth Darren
Koenig Melissa
Bliss McGlynn P.C.
Bonck Rodney H.
Borg-Warner Inc.
Dziegielewski Greg
Le David D.
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