Vehicle drive apparatus, method and computer program

Details Vehicle drive apparatus, method and computer program Vehicle drive apparatus, method and computer program

2005-04-12

2005-04-12

Black, Thomas G. (Department: 3663)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Electric vehicle

C701S102000, C180S243000, C180S065230, C180S065310, C318S139000, C318S459000, C290S04000F, C290S04000F, C290S04000F

Reexamination Certificate

active

06879888

ABSTRACT:
The object of the present invention is to provide a vehicle drive system which enables setting of appropriate start-up torque and restraining of progress of battery deterioration. A vehicle drive apparatus having an electric motor, which is driven with electricity supplied by a battery, for driving a vehicle or assisting it while driven by an engine includes: a temperature sensor for detecting the battery temperature, an discharge power upper limit setting means for setting an upper limit for discharge power of the battery depending on the battery temperature, a discharge power computing means for computing battery discharge power, a revolution speed sensor for detecting a revolution speed of the engine, a basic start-up torque setting means for setting basic start-up torque requirement depending on the revolution speed and a start-up torque adjust means for decreasing the start-up torque requirement if the discharge power exceeds the discharge power upper limit during engine start-up.

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