Event sequenced clutch-to-clutch downshift for an electronically

Details Event sequenced clutch-to-clutch downshift for an electronically Event sequenced clutch-to-clutch downshift for an electronically

1987-12-22

1989-01-10

Wright, Dirk

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74877, B60K 4118

Patent

active

047964901

ABSTRACT:
A clutch-to-clutch power-on downshift in a motor vehicle automatic transmission is initiated by reducing the torque capacity of the off-going clutch, permitting the transmission input speed to increase toward its post shift value. When the slippage across the off-going clutch exceeds a reference, the reduction of its torque capacity is suspended, permitting continued increase of the transmission input speed. When the slippage across the on-coming clutch falls below a reference value, the on-coming and off-going clutches are concurrently applied and released to complete the shift. The transmission input speed substantially achieves its post shift value at the time of such apply and release, resulting in reduced shift-related output torque disturbance.

REFERENCES:
patent: 4367528 (1983-01-01), Kawamoto et al.
patent: 4422350 (1983-12-01), Muller et al.
patent: 4485443 (1984-11-01), Knodler et al.
patent: 4653350 (1987-03-01), Downs et al.
patent: 4685356 (1987-08-01), Iwatsuki
patent: 4690017 (1987-09-01), Taniguchi et al.
patent: 4707789 (1987-11-01), Downs et al.
patent: 4709596 (1987-12-01), Boda et al.
patent: 4730519 (1988-03-01), Nakamura et al.

Affiliated with

Also associated with

Rating

Event sequenced clutch-to-clutch downshift for an electronically does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Event sequenced clutch-to-clutch downshift for an electronically, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Event sequenced clutch-to-clutch downshift for an electronically will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2101934