Drive control device for motor vehicle during low temperature

摘要

A low temperature drive control device is used for a motor mounted automotive vehicle in which the rotation of a motor is transmitted to a wheel and a common oil is used for cooling the motor and also for lubricating gears. The motor mounted automotive vehicle includes a command torque calculator for calculating a command torque to be applied to the motor in dependence on an acceleration input, a motor drive controller for controlling an electric current value to be supplied to the motor in dependence on the command torque calculated by the command torque calculator an oil temperature detector for detecting the oil temperature, and a motor torque changer for changing the command torque in dependence on the oil temperature detected by the oil temperature detector.

主权项

1. A low temperature drive control device for a motor mounted automotive vehicle, in which rotation of a motor is transmitted to a wheel through a gear and an oil for use in cooling the motor and an oil for use in lubricating the gear are commonly used, the drive control device comprising:
a command torque calculator to calculate a command torque to be supplied to the motor in dependence on an acceleration input inputted from an acceleration input unit; a motor drive controller to control an electric current value to be supplied to the motor in dependence on the command torque calculated by the command torque calculator; an oil temperature detector to detect the temperature of the oil; and a motor torque changer to change the command torque in dependence on an oil temperature detected by the oil temperature detector, wherein the motor torque changer is operable to multiply the command torque, calculated by the command torque calculator, by a coefficient which varies with the oil temperature detected by the oil temperature detector.