Interrelated power delivery controls – including engine control – Electric engine – With transmission control
Patent
1992-12-17
1994-10-18
Wright, Dirk
Interrelated power delivery controls, including engine control
Electric engine
With transmission control
477 15, F16H 5936
Patent
active
053557492
ABSTRACT:
A control apparatus of a motor drive vehicle includes a unit for generating a target vehicle speed; a speed instruction unit for generating a target motor rotational speed of the motor based upon a preset motor control pattern in response to the target vehicle speed; a power circuit for operating the motor at the target motor rotational speed upon receipt of the target motor rotational speed; a variable transmission unit for converting a drive output from the motor into a transmission ratio for instructing a rotational speed of the drive output, and transferring the converted transmission ratio to a drive shaft of the motor drive vehicle; and a transmission ratio calculating unit for determining the transmission gear ratio based on the target vehicle speed and the target motor rotational speed thereby to instruct the determined transmission gear ratio to the variable transmission unit. A control method sets a target vehicle speed value; produces a target motor rotational speed based upon the target vehicle speed value and a preset motor control pattern; operates the motor at the target motor rotational speed; determines a transmission gear ratio based upon both of the target vehicle speed and the target motor rotational speed; and converts a rotational speed of a drive output into the transmission ratio and transfers the converted transmission ratio to a drive shaft.
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Masaki Ryoso
Naoi Keigo
Obara Sanshiro
Ohmae Tsutomu
Okuyama Toshiaki
Hitachi , Ltd.
Wright Dirk
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