Lock-up control device for lock-up type torque converter and mul

Details Lock-up control device for lock-up type torque converter and mul Lock-up control device for lock-up type torque converter and mul

1995-12-27

1997-10-07

Lorence, Richard M.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

747321, F16H 6114

Patent

active

056737750

ABSTRACT:
A lock-up type torque converter includes a lock-up control device having a lock-up control valve, an input element and an output element. The torque converter also includes a supply line to supply operating fluid to the lock-up control valve. The supply line has a regulator valve for regulating pressure of the operating fluid in the supply line by selectively connecting the supply line to an oil cooler or a drain line. An applying chamber is situated on a first side of a lock-up clutch and a releasing chamber is situated on a second, opposite side of the lock-up clutch. In a releasing position, the lock-up control valve supplies operating fluid to the torque converter such that the operating fluid flows from the releasing chamber to the applying chamber to shift the lock-up clutch to a converter state in which the input element and the output element are indirectly mechanically linked to each other through the operating fluid. In a lock-up position the lock-up control valve supplies operating fluid to the torque converter such that the operating fluid flows from the applying chamber to the releasing chamber to shift the lock-up clutch to a lock-up state in which the input element and the output element are directly mechanically linked to each other.

REFERENCES:
patent: 3058373 (1962-10-01), Snoy et al.
patent: 4618038 (1986-10-01), Ogasawara et al.
patent: 4768632 (1988-09-01), Moan
patent: 5152386 (1992-10-01), Imamura
patent: 5343990 (1994-09-01), Iizuka
"Service Manual For Nissan RE4R01A-Type Full-Range Electronically-Controlled Automatic Transmission" issued by Nissan Motor Co., Ltd. (Mar. 1987).

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