Electric Car Design based on Low Drag

Abstract:

General situation of electric car design is analyzed and basic specifications are set. Based on the body of least drag, the paper start with a low-drag bionic shape to get the main body design. With comparison study of the electric car and traditional car design, the style of the new car is defined. Optimization for the essential parts of the car, such as the nose, wheel, etc., are developed on both design and aerodynamics. During the process, the styling, aerodynamics and thermal control are studied with coupling method. Finally a totally new low-drag electric car design is developed, as well as a full-scale hard model. The final 1:1 wind tunnel test result in a CD of 0.193, much better than the objective of CD 0.238.