Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control
Reexamination Certificate
2011-02-08
2011-02-08
Tran, Khoi (Department: 3664)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Transmission control
C701S068000, C477S070000, C477S174000, C477S180000
Reexamination Certificate
active
07885749
ABSTRACT:
In a drive system, where power from a motor is transmitted to a drive shaft and a transmission ratio is changed by a transmission, if the absolute value of the difference between the reference torque Tm2r0, which is the drive shaft side torque Tm2r at the onset of a change in the shift speed of the transmission, and the driving shaft side torque Tm2r during the change is less than the threshold value α until the end of the change (S280), the application state of a brake in the transmission during the change and the state of the hydraulic pressure supplied to the brake are learned (S290). During the change, and actuator of the transmission is controlled using those learned results. Accordingly, any deviations that may have occurred due to changes over time in the transmission, etc. are corrected and the shift speed of the transmission is changed more appropriately.
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Office Action issued in JP Application No. 2005-049501 on Aug. 21, 2007 (with partial English translation).
Kamichi Kensuke
Okasaka Kazuomi
Tajima Yoichi
Ueoka Kiyoshiro
Yamamoto Masaya
Aisin Aw Co. Ltd.
Broadhead Brian J
Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
Tran Khoi
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