Importance

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Abstract

The present invention provides a motor drive controller for a vehicle having an engine and a motor disposed therein as a vehicle-propulsion system, the motor having both driving and power-generating functions, comprising: an engine controller for controlling a running state of the engine; motor controller for controlling both driving and power-generating states of the motor in a manner independent of control over the engine gained by the engine controller; engine speed-detector for detecting an engine revolution of the engine; and, engine load-detector for detecting an engine load. The motor controller includes a map defined by respective detection signals from the engine speed detector and the engine load-detector. The motor controller functions to provide alternative control between driving and power generation of the motor in response to a torque instruction value that is retrieved from the map.

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First Claim