192 clutches and power-stop control – Vortex-flow drive and clutch – Including drive-lockup clutch
Patent
1989-10-30
1991-02-05
Lorence, Richard
192 clutches and power-stop control
Vortex-flow drive and clutch
Including drive-lockup clutch
192 331, 74890, 475 65, F16H 4502, F16H 6114
Patent
active
049897020
ABSTRACT:
A control system for a torque converter includes a lock-up clutch provided in a torque converter for connecting an input member and an output member of the torque converter directly. An engaging and disengaging hydraulic device controls an engaging and disengaging action of the lock-up clutch. A shift valve provided with a first and second spools in series controls introduction of a driving hydraulic pressure into the hydraulic device. The first spool of the shift valve is subjected to a first hydraulic pressure at one end, while the second spool is subjected to a second hydraulic pressure at the other end. The first and second spools are subjected to a third hydraulic pressure therebetween. The control system further includes a first control device for controlling the first hydraulic pressure, a second control device for controlling the second hydraulic pressure, an adjusting valve for adjusting the driving hydraulic pressure introduced into the engaging or disengaging hydraulic device, and a third control device for controlling a hydraulic pressure for controlling the adjusting valve. Converter, lock-up and slip conditions of the torque converter can be selectively established by switching shift positions of the single shift valve.
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Fujiwara Takuji
Ishii Kozo
Takemoto Kazuo
Yoshimura Hiroshi
Lorence Richard
Mazda Motor Corporation
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