Hydraulic control system for lock-up clutch of torque converter

Details Hydraulic control system for lock-up clutch of torque converter Hydraulic control system for lock-up clutch of torque converter

1984-08-17

1986-10-21

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

F16D 4706

Patent

active

046180362

ABSTRACT:
A hydraulic control system comprises a pump driven by an engine to discharge hydraulic fluid, a torque converter having a lock-up clutch with a lock-up clutch piston movable to a clutch released position when fluid pressure within a lock-up release chamber is higher than fluid pressure within a working chamber within a torque converter cavity, a line pressure regulator valve and an orifice which provides a restricted flow communication between the torque converter and the pump even when line pressure generated by the line pressure regulator valve is lower than a predetermined value.

REFERENCES:
patent: 3966032 (1976-06-01), Koivunen
patent: 3977502 (1976-08-01), Chana
patent: 4271939 (1981-06-01), Iwanaga et al.
patent: 4382496 (1983-05-01), Yamamori

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