Transmission control providing sequentially engaged high and low

Details Transmission control providing sequentially engaged high and low Transmission control providing sequentially engaged high and low

1988-09-06

1989-07-18

Bonck, Rodney H.

192 clutches and power-stop control

Transmission control and clutch control

Common control

192 4C, 192 51, 192 8719, F16D 2511

Patent

active

048485306

ABSTRACT:
A clutch control for a multi-speed vehicle transmission having operator selected, hydraulically operatable clutches for the shifting of direction and speed includes a valve means which automatically engages a higher and a lower speed clutch in sequence when a direction shift is made. If the direction is shifted while the transmission is shifted to a lower speed range the next higher speed clutch will be momentarily engaged before the lower speed clutch is engaged.

REFERENCES:
patent: 3339672 (1967-09-01), Crandall
patent: 3882980 (1975-05-01), Blake
patent: 4090414 (1978-05-01), White
patent: 4574661 (1986-03-01), Opperud et al.
patent: 4601369 (1986-07-01), Hattori et al.
patent: 4768636 (1988-09-01), Ito et al.

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