Patent ID: 6692403
Filing Date: 2004-02-17
Classification: B60K,B60L,B60W,Y02T,Y10T

Abstract:
A drivetrain for a series hybrid vehicle, comprising:(a) an engine having an output shaft driving an alternator, the engine having a power available at the output shaft of the engine; (b) at least one electric traction motor, for generating a propulsion torque, connected to the alternator by an electric line and an inverter, the inverter allowing the electric traction motor to be operated at a desired propulsion torque, the electric line allowing the transfer of an electric traction power; (c) an accelerator control CA at the disposal of a vehicle driver to control the power available at the output shaft of the engine; (d) an actuator PP acting on the engine; (e) a control device controlling the position of the actuator PP as a function of the position of the accelerator control CA, as far as a limitation at least when the desired torque reaches the maximum torque of the electric traction motor; and (f) a unit for controlling the propulsion torque of the electric traction motor by continuously calculating the desired propulsion torque as a function of a vehicle speed and as a function of a control power P evaluating the power available at the output shaft of the engine as a function of the actual speed of the engine the power available at the output shaft being a result of the operation of the accelerator control CA by the vehicle driver.