ABSTRACT

This chapter begins with optimizing the calibration of engine startup control strategy and explores the evaluation on the start-up comfort, start-up success rate, energy consumption and other characteristics. The start-up comfort is improved, the start-up success rate is increased and the start energy consumption is decreased by improving the drag target speed, the motor-driven exit time, optimizing the amount of fuel injection and so on. Optimized calibration experiments on the range extender are conducted using the different drag target speed, different motor-driven exit time, different amount of fuel injection, ISG start and drive energy consumption. The ISG motor is controlled by the motor controller GCU while the engine is controlled by the engine controller ECU. In the engine start-up process, the ISG motor consumes power, and the engine also consumes energy. With the increasing of the drag target speed, ISG motor will need to drag it to a higher engine speed, so the power consumption increases.