Control system for vehicle transmissions

Details Control system for vehicle transmissions Control system for vehicle transmissions

1987-09-21

1989-10-03

Bonck, Rodney H.

192 clutches and power-stop control

Transmission control and clutch control

Common control

192 8719, 192109F, F16D 2511

Patent

active

048710482

ABSTRACT:
A transmission control system for actuating a hydraulically controlled vehicle transmission that includes a pair of shiftable valve members determining four range speed conditions and two shiftable valve members determining whether the vehicle is in forward or reverse. Operating in conjunction with the speed range valve members is a fill control system which provides for rapid filling of the clutches and a pressure control system which provides for the controlled rate of energization of the clutches once the clutches have been filled to eliminate shift shock.

REFERENCES:
patent: 3618424 (1971-11-01), Golan et al.
patent: 3809201 (1974-05-01), Miyanishi et al.
patent: 3818776 (1974-06-01), Prenzel et al.
patent: 3990553 (1976-11-01), Holzinger et al.
patent: 3991865 (1976-11-01), Komatsu
patent: 4046160 (1977-09-01), Horsch
patent: 4086994 (1978-05-01), Hirosawa et al.
patent: 4132302 (1979-01-01), Chatterjea
patent: 4138004 (1979-02-01), Horsch
patent: 4219109 (1980-08-01), Ushijima et al.
patent: 4387731 (1983-06-01), Chatterjea

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