Design and analysis of the front suspension geometry and steering system for a solar electric vehicle

Abstract

A study on the design of the front suspension geometry and steering system to be used in a solar electric vehicle. The suspension geometry utilizes a double wishbone design that is optimized to fit in the space constraints of the vehicle. The steering system consists of a rack and pinion connected through tie rods to the steering knuckles, largely optimized based on the space within the vehicle. The final suspension geometry consists of upper and lower wishbone lengths of 4.25 inches and 3.75 inches, respectively. This system is optimized to maintain a proper camber angle and minimize scrub due to track distance changes throughout the travel of the suspension. The geometry of the steering system is designed to fit in the vehicle while achieving a near- Ackermann steering condition. The steering knuckle and steering rack extenders, both made out of Aluminum 6061-T6, are designed based off of this geometry and are optimized for weight and machinability.