A transmission park-brake system includes a transmission park brake, a solenoid, first, second and third pressure sources, and a servo valve for disengaging the park-brake using the first and second pressure sources, holding the park-brake disengaged using a force produced by the solenoid and one of the first and second pressure sources, and engaging the park-brake using the third pressure source.
Shift-by-wire actuation of a transmission park brake
2015-08-25
Patent
Electronic Resource
English
Shift-by-wire actuating device having mechanical parking brake actuation
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