The main function of the spoiler is to reduce the lift of the tail of the vehicle. If the lift of the tail is larger than the lift of the front, it is easy to cause excessive steering of the car, the grip of the rear wheel is reduced, and the high speed stability is poor.
Like the wind resistance, lift is proportional to the square of the speed of the vehicle. That is to say, the lift at 120 km/h is four times the speed of 60 km/h and nine times the speed of 40 km/h. Therefore, cars with higher speeds, such as high-class cars and sports cars, are usually equipped with spoilers.
There are many types of spoilers on the car. For example, the spoiler on the car is higher, in order to make full use of the spoiler, so that the air flow without turbulence acts directly on the spoiler, and the downforce generated by it does not act on the body to offset its effect. It is therefore necessary to install the spoiler away from the body surface.
Some travel cars have a spoiler on the rear edge of the top cover that allows a portion of the airflow over the top cover to be directed through the rear window surface. In this way, the lift of the rear part of the rear window can be reduced, and the airflow can be guided to eliminate the dust on the surface of the rear window, thereby preventing the dust from adhering and affecting the rear view of the automobile. Spoilers are also installed on many regular cars. In fact, because the speed of these cars is not very high, the spoiler is difficult to play a practical role, and beautifying the appearance of the body becomes the biggest purpose of installing the spoiler.