Direct-coupling control device for a hydraulic torque converter

Details Direct-coupling control device for a hydraulic torque converter Direct-coupling control device for a hydraulic torque converter

1984-02-13

1986-04-08

Krizmanich, George H.

Machine element or mechanism

Gearing

With fluid drive

192 0076, 192 331, F16H 4700, B60K 4102

Patent

active

045804648

ABSTRACT:
In an automatic transmission for automotive vehicles, a direct-coupling control device of a hydraulic torque converter is adapted to modulate at a constant rate a signal fluid pressure which is proportional to the vehicle speed, and supply as operating fluid pressure the modulated fluid pressure to a direct-coupling clutch of the torque converter, which locks up an input member and an output member of same. As the fluid pressure signal, a governor pressure is used which has its pressure value amplified at a constant rate and, preferably, with a pressure having a constant value added thereto.

REFERENCES:
patent: 3857302 (1974-12-01), Morris
patent: 4391166 (1983-07-01), Kubo et al.
patent: 4431096 (1984-02-01), Kobayashi et al.
patent: 4448293 (1984-05-01), Maeda

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