Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid controlled mechanical clutch or brake
Reexamination Certificate
2007-08-09
2010-11-02
Wright, Dirk (Department: 3655)
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid controlled mechanical clutch or brake
Reexamination Certificate
active
07824291
ABSTRACT:
When a determination for a second shift is made during a first shift process, if the turbine speed is the variety of the synchronous rotational speed for the speed to which the automatic transmission is to be shifted in the second shift and the hydraulic pressure command value for the first brake, which is engaged in the second shift, is equal to or larger than a predetermined value, the multiple shift portion immediately switches the shift control from the first shift control to the second shift control so that the hydraulic pressure command value for the first brake, which is engaged in the second shift, increase at a specific rate and the hydraulic pressure command value for the third brake, which is released in the second shift, decreases at a specific rate.
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Asami Tomohiro
Hasegawa Yoshio
Kobayashi Nobufusa
Sugimura Toshio
Tokura Takaaki
Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
Wright Dirk
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