Speed change control apparatus and method for automatic transmis

Details Speed change control apparatus and method for automatic transmis Speed change control apparatus and method for automatic transmis

1981-10-19

1984-06-26

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

74866, 192 0052, 192 0076, B60K 4128

Patent

active

044561075

ABSTRACT:
A direct coupled clutch is provided in parallel to a fluid type torque converter of an automatic transmission, and the supply of oil pressure to a hydraulic servo for the direct coupled clutch is controlled by an electromagnetic valve. When an accelerator pedal is returned with speed higher than a predetermined value, the direct coupled clutch is maintained in the disengaged condition only for a predetermined time so that impact caused by abrupt change in torque of an engine can be avoided.

REFERENCES:
patent: 4226295 (1980-10-01), Rembold et al.
patent: 4270636 (1981-06-01), Sunohara et al.

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