RIDE COMFORT ANALYSIS OF ENGINE MOUNTING SYSTEMS USING FULL VEHICLE DYNAMIC MODEL

Three different types of engine mounting systems such as rubber, hydraulic and semi-active engine mounting systems are analyzed to find out the effects on vehicle ride comfort in this study. To achieve this goal, a full vehicle ride dynamics model under the combination of two excitation sources such as the Internal Combustion Engine (ICE) and road surface excitations is established for simulation and analysis. Matlab/Simulink software is used to simulate and analyze the vehicle ride comfort. Ride performance of three different types of engine mounting systems is respectively analyzed through three objective functions according to the international standard ISO 2631-1. The study results show that the values of three objective functions with semi-active engine mounting systems respectively reduce in comparison with rubber and hydraulic engine mounting systems when the vehicle operates under the different operating conditions. The vehicle ride comfort becomes better with a semi-active engine mounting system.