Valve system for a hydraulically controlled starting friction cl

Details Valve system for a hydraulically controlled starting friction cl Valve system for a hydraulically controlled starting friction cl

1985-02-07

1986-12-30

Bonck, Rodney H.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192103F, F16D 2514, F16D 43284

Patent

active

046322302

ABSTRACT:
In a valve system for a hydraulically controlled starting friction clutch, a clutch pressure control valve that controls the clutch pressure during the starting phase of the clutch engagement as a function of the torque requirement of the operator, and a valve that overrides the clutch pressure control valve as a function of the output speed wherein a clutch pressure control valve 17 has a valve arrangement that acts as a slippage time limiter, the latter comprising a startup valve 13, an accumulator 14 and an on-off valve 15. After a specific time affected by the selection of the throttle orifices 28a and 28b and the piston rod diameter 27, higher clutch pressure pk (D, L, R) is fed to the clutch pressure control valve.

REFERENCES:
patent: 3004447 (1961-10-01), Sand
patent: 3237734 (1966-03-01), Jania
patent: 4502579 (1985-03-01), Makita
patent: 4542665 (1985-09-01), Yamamuro et al.

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