ABSTRACT
Formula SAE of china is a college in vehicle engineering or related professional college students participate in the design and manufacture of car race。The steering system is an important part of the design of the car，Steering system has a direct impact on the performance of the car and the driver's control。Design steering ladder，Selection of steering trapezoid arrangement，Complete the design task of steering trapezoid.。
This paper analyzes and compares the difference between the car and the passenger car steering system。According to the system requirements and rules of the car steering system design goals and design process。Comparison of various types of steering gear，Analysis and comparison of their advantages and disadvantages，According to the rules and racing parameters；Determine the type of car steering gear；According to the requirements of the rules and drivers need to design the steering wheel；Design and calculate the performance parameters and calculation parameters of the steering system.，Determine the maximum steering angle，Angle transmission ratio，Torque transmission ratio，Rack travel and trapezoid arm length,，etc。Design gear rack and check；Selective break open type，The layout form of the front of the steering trapezoid。
KEYWORDS:FSC Racing Car; Steering System; Steering Performance; Steering Trapezoid; Steering Gear。
