Design and development of longitudinal vehicle dynamics for an All-terrain vehicle

Abstract

Design and development of maximum efficiency in the longitudinal axis of vehicle dynamics for an ATV have been carried out by developing an optimum Transmission system in accordance with other subsystems viz Braking and Suspension. The design parameters of suspension, braking, and transmission systems has been calculated using MATLAB. 3D Computer Aided Designing, simulation, and validation of all the components have been carried out in Solidworks, ANSYS & MATLAB respectively. To achieve an optimum gear ratio considering factors - top speed and acceleration and to maximize the efficiency of longitudinal vehicle dynamics, optimum design parameters have been considered for suspension, braking, and transmission systems on an All-Terrain Vehicle. Acceleration and Braking are one of the most both essential parameters for longitudinal vehicle dynamics. Gaged GX9 model continuously variable transmission (CVT) has been used as an integral component for the powertrain of the All-terrain vehicle and the velocity of the vehicle is considered around 58 to 60 kph (~16 to 17 m/sec). Further a reduction gearbox of a ratio of 8.124 has been used for efficient transmission of torque from the engine to the wheels. Temperature plots and computational fluid dynamics plots have been obtained for the brake disc to observe the thermal dissipation behavior of the braking system and similarly, thermal plots have been obtained for the continuous variable transmission made of aluminum.