The Research on the Subjective and Objective Drivability Evaluation and Analysis of PHEV Passenger Car

In view of the influence of PHEV’s complicated control strategy and operation mode on driving performance, the subjective and objective evaluation testing are conducted on a PHEV passenger vehicle with a DCT powertrain combination of three-cylinder machine and built-in motor. The results show that in the operation of switching between hybrid and pure electric modes there are much more disadvantages to the drivability evaluation, including engine start and stop, automatic transmission shift, as well as engine and motor speed torque variation. The longitudinal acceleration of the studied vehicle does not fluctuate greatly during the mode switching process, which indicates that the drivability calibration was being performed to get the optimized data in the development. The transmission of the studied vehicle has obvious shift shock, but the shift response, engine start-stop performance and vehicle comfort score are higher. In the starting condition and acceleration process, the motor has fast response, small vibration and good subjective feeling, which reflects the unique configuration advantages of PHEV in driving performance.