Simulation of the Dynamic Performance of the Passenger Cars by Employing Computer

Abstract

This research presents a precise comprehensive simulation to study the performance of the passenger cars, based on theory of the motor vehicles on the one hand, and based on the general principles of simulation on the other hand. the simulation includes three major steps: dynamic modeling, mathematical modeling , and computer programming. As to the dynamic performance of automobile, it is usually described by three parameters : the maximum speed of a car, the maximum uphill inclination angle, and the acceleration time. It must be  pointed out that the acceleration time represents the major parameter  of performance , according to the common practice in the international  markets of automobiles.

In general, the time of acceleration can be determined experimentally on special stands or directly on the road . Since the experimental tests cost much and require qualified labor, so it will be better to calculate the acceleration time using Numerical Integration method. In this research, as an example, all the performance parameters have determined by applying the principles of simulation on "Kia Rio",  because it is one of the most widely used car .

The results of comparison have shown that simulation of the real system is achieved successfully, Indeed, the calculated time was identical to the experimental time , which was given by the manufacturing company. In both cases the approximate magnitude of the acceleration time within a certain speed interval (0-100 km/h) is 10 seconds. Finally, for the future studies, the simulation principles can be used also to study the dynamic performance of electric and hybrid vehicle>