Multiple stage automatic transmission

Details Multiple stage automatic transmission Multiple stage automatic transmission

1993-04-08

1995-08-08

Kwon, John T.

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477143, F16H 6108

Patent

active

054394279

ABSTRACT:
A multiple stage automatic transmission includes a main transmission mechanism, a sub-transmission mechanism connected with the main transmission mechanism to for introduction of a torque therefrom, and a frictional element connected with the sub-transmission. The engaging force of the frictional element is changed at least by two steps in accordance with a shift mode without changing a hydraulic pressure applied for actuating the frictional element. A shift shock, therefore, can be obviated.

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patent: 5109731 (1992-05-01), Iwatsuki et al.
patent: 5194057 (1993-03-01), Sommer
patent: 5195036 (1993-03-01), Kimura et al.
patent: 5259489 (1993-11-01), Kimura et al.

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