Mathematical Modeling and Computational Study of a Passenger Car Dynamics During Acceleration

Abstract

A mathematical model of a passenger car dynamics during acceleration is proposed. The model takes into account the parameters of the car and engine, gear shift mode, external conditions (parameters of the road surface, road slope, gear shift time). As a result of the calculation for the ZAZ-Sens car, the loads that arise in the drive of the car were analyzed. The time for which the car accelerates 0 to 100 km/h has been determined. The influence of vehicle mass, engine nominal power, gear shift mode, wheel radius, vehicle height, aerodynamic drag coefficient on the dynamics of vehicle acceleration has been analyzed. It is shown that the mass of the vehicle, the rated power of the engine and shifting gear time affect the acceleration dynamics to the greatest extent. The influence of other parameters is not so significant. The explanation of the obtained results is given.