Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid controlled mechanical clutch or brake
Patent
1993-01-12
1995-10-03
Wright, Dirk
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid controlled mechanical clutch or brake
475123, 477120, F16H 6108
Patent
active
054547636
ABSTRACT:
An automatic transmission control method and apparatus for a vehicle includes a first gear change mechanism in which an input shaft is connected to an output shaft of a fluid coupling and a rotational speed of the output shaft of the first gear change mechanism is changed by selectively controlling hydraulic oil supplied to and discharged from a plurality of first frictional engaging elements. It further includes a second gear change mechanism in which an input shaft is connected to the output shaft of the first gear change mechanism, the output shaft is connected to a driving wheel member and an output shaft rotational speed of the second gear change mechanism is controlled by selectively controlling the hydraulic oil supplied to and discharged from a plurality of second frictional engaging elements. When the first and second gear change mechanisms are operated simultaneously, the rotational speed change rates of the input shaft of the first and second gear change mechanisms are adjusted to predetermined rotational speed change rates by controlling the flow of the hydraulic oil with respect to the first and second plurality of frictional engaging elements.
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Fujita Kenjiro
Ikebuchi Tetsuo
Usuki Katsutoshi
Mitsubishi Jidosha Kogyo Kabushiki Kaisha
Wright Dirk
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