Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1985-11-29
1987-03-31
Braun, Leslie
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74866, 3644241, B60K 1712, B60K 2016, G06F 1550
Patent
active
046533508
ABSTRACT:
An adaptive shift control system for regulating the operation of a fluid operated torque establishing device associated with a specified speed ratio in a motor vehicle automatic transmission. Shifting from a currently engaged speed ratio to the specified speed ratio includes a completion phase during which fluid is supplied to the torque establishing device in accordance with a predetermined pressure schedule to initiate and progressively increase the transmission of torque therethrough. The time required to complete a specified portion of the speed ratio progression is identified and compared to a reference time representative of the time required to complete the progression when the shift quality is not degraded. The predetermined pressure schedule is adjusted based on such comparison so as to adaptively compensate for sources of error which affect the increase of torque transmission through the torque establishing device during the completion phase and cause the shift quality to be degraded.
REFERENCES:
patent: 4220058 (1980-09-01), Petzold
patent: 4283970 (1981-08-01), Vukovich
patent: 4485443 (1984-11-01), Knodler
Downs Robert C.
Nitz Larry T.
Wanamaker Joseph L.
Braun Leslie
General Motors Corporation
Navarre Mark A.
White John Malcolm
LandOfFree
Adaptive direct pressure shift control for a motor vehicle trans does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive direct pressure shift control for a motor vehicle trans, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive direct pressure shift control for a motor vehicle trans will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2204930