VEHICLE DRIVE CONTROL DEVICE

摘要

A vehicle drive control device performs acceleration/deceleration running by alternately repeating acceleration running and deceleration running, wherein it compares between an efficiency of the motor at a first operation point determined by a rotation speed and a torque of a motor and an efficiency of the motor at a second operation point for outputting a higher torque than the first operation point, and if a difference between the efficiencies is greater than a determination value, the acceleration running at the second operation point and the deceleration running being repeated, the second operation point being set a maximum efficiency line of the motor with the rotation speed and the torque of the motor as parameters to perform the acceleration running, and if acceleration during the acceleration running becomes larger than an acceleration limit value, a rotating machine acting at least as an electric generator generating electricity to charge a battery.

主权项

1. A vehicle drive control device performing acceleration/deceleration running by alternately repeating acceleration running by operation of a motor and deceleration running by stopping of the motor or interruption of power transmission from the motor, the vehicle drive control device being configured
to make a comparison between an efficiency η1 of the motor at a first operation point determined by a rotation speed and a torque of the motor during normal running while the motor is operated depending on an output request amount and an efficiency η2 of the motor at a second operation point for outputting a higher torque than the first operation point, and if a difference between the efficiencies is greater than a predetermined determination value, the acceleration running at the second operation point and the deceleration running being repeated, to store a maximum efficiency line of the motor with the rotation speed and the torque of the motor as parameters in advance, and the second operation point being set on the maximum efficiency line to perform the acceleration running, and to include a rotating machine acting at least as an electric generator in a power transmission path between the motor and wheels, and if acceleration during the acceleration running becomes larger than a predetermined acceleration limit value, the rotating machine generating electricity to charge a battery.