Methods and systems for assisted direct start control

Details Methods and systems for assisted direct start control Methods and systems for assisted direct start control

2011-05-03

2011-05-03

Ho, Ha D. (Department: 3655)

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

C477S121000, C477S127000

Reexamination Certificate

active

07935025

ABSTRACT:
Methods and systems are provided for pressurizing a hydraulic circuit comprising a hydraulically actuated transmission component and an accumulator. One example method comprises, during an engine idle-stop, adjusting actuation of the hydraulically actuated transmission component over a duration. The method further comprises, during the duration, isolating the accumulator from the hydraulically actuated transmission component when a pressure in the hydraulic circuit is above a threshold, and coupling the accumulator into the hydraulic circuit when the pressure is below the threshold.

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