Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1994-05-25
1998-11-24
Ta, Khoi Q.
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
477155, 477156, 477176, F16H 6104
Patent
active
058399887
ABSTRACT:
A control system of an automatic transmission includes a torque converter, a lock-up clutch for directly connecting input and output members of the torque converter, a pressure control valve which changes a hydraulic pressure to control an engaging force of the lock-up clutch, and a pressure regulator, disposed in an engaging passage, which supplies hydraulic pressure to engage a frictional element. The pressure regulator adjusts a primary pressure and produces an output hydraulic pressure corresponding to a control pressure introduced into a control port of the pressure regulator. A control pressure supply device is provided for introducing the control pressure, controlled by the pressure control valve, into the control port of the pressure regulator. The number of parts can be reduced without producing any inconvenience.
REFERENCES:
patent: 5014575 (1991-05-01), Fujiwara et al.
patent: 5361651 (1994-11-01), Wakahara
Enokido Kazunori
Fujiwara Takuji
Kamada Shinya
Marusue Toshihisa
Mizobe Tatsutoshi
Mazda Motor Corporation
Ta Khoi Q.
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