Synchronized hydropneumatic control of clutch and gearbox

Details Synchronized hydropneumatic control of clutch and gearbox Synchronized hydropneumatic control of clutch and gearbox

1979-03-16

1981-06-23

Husar, C. J.

192 clutches and power-stop control

Transmission control and clutch control

Common control

192 351, 192 363, 60556, 60563, 60574, B60K 4122, F16D 6700

Patent

active

042745217

ABSTRACT:
The object of the invention is a synchronized hydropneumatic control of clutch and gearbox.
In accordance with the invention a hydropneumatic servomotor clutch control has been provided which includes a jack the piston of which is assisted by a pneumatic motor and a master cylinder which feeds the said jack with hydraulic fluid and controls the feed of air to the said motor, characterized in that the control chamber of the said jack is connected to the hydraulic circuit for locking/unlocking the gearbox, the feed to the said circuit being carried out through a valve mounted in the piston. The admission of the hydraulic fluid from the master cylinder having as its effect during a first period the closing of the said valve, thus interrupting the admission of fluid into the said chamber, then the causing of the transfer of the fluid contained in the latter towards the circuit for the gearbox which becomes unlocked in synchronism with the clutch.
Application to controls of clutch and gearbox of vehicles.

REFERENCES:
patent: 2153509 (1939-04-01), Rockwell
patent: 2753024 (1956-07-01), Weaving et al.
patent: 2753025 (1956-07-01), Reis
patent: 2908364 (1959-10-01), Alfieri

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