Method for compensating hydraulic pressure of automatic...

Details Method for compensating hydraulic pressure of automatic... Method for compensating hydraulic pressure of automatic...

2007-12-07

2011-11-08

Trammell, James (Department: 3667)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

C303S116100, C303S114100, C303S113100, C303S113200, C303S113400, C180S197000, C060S547100, C091S420000, C091S518000, C415S001000, C415S009000, C415S010000, C188S358000

Reexamination Certificate

active

08055413

ABSTRACT:
Faster shifting operation and reduced shift shock in response to a braking operation during a lift-foot-up shifting may be achieved when an automatic transmission is controlled by a method for compensating a hydraulic pressure that includes: determining whether a lift-foot-up shifting of the automatic transmission is under control; calculating a vehicle speed of a vehicle; calculating a deceleration rate of the vehicle; calculating a compensation hydraulic pressure to be applied to a friction member of the transmission, based on the deceleration rate; calculating a on-coming pressure based on the calculated compensation hydraulic pressure; and applying the calculated on-coming pressure to the friction member.

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patent: 1020020044464 (2002-06-01), None
patent: 1020020045491 (2002-06-01), None

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