Hydraulic control system for vehicular automatic transmission wi

Details Hydraulic control system for vehicular automatic transmission wi Hydraulic control system for vehicular automatic transmission wi

1985-07-29

1989-08-08

Herrmann, Allan D.

Machine element or mechanism

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

Preselected indexed position

74868, B60K 4116

Patent

active

048541958

ABSTRACT:
Described herein is a hydraulic control system for vehicular automatic transmission, including an accumulator back pressure control circuit which is provided between a line pressure conduit and a back pressure supply conduit, and comprises a first accumulator control valve for dropping the line pressure according to the throttle opening, and a second accumulator control valve receiving an input pressure commensurate with the throttle opening and dropping the output pressure of the first accumulator control valve according to the throttle opening to apply to the piston of the accumulator a back pressure varying in corresponding to the engine output shaft torque.

REFERENCES:
patent: 2809536 (1957-10-01), O'Malley
patent: 2832231 (1958-04-01), Edsall
patent: 2875634 (1959-03-01), Gelenius et al.
patent: 4428258 (1984-01-01), Kubo et al.

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