What is the Function of a Car Spoiler?
2 Answers
Functions of a car spoiler: 1. It can generate the fourth type of force from the air on the car, namely the adhesion to the ground. The spoiler can offset part of the lift, control the car's tendency to rise, reduce the impact of wind resistance, and allow the car to adhere closely to the road, thereby improving driving stability; 2. In addition to reducing resistance during high-speed driving, installing a spoiler also helps save fuel to a certain extent; 3. Taking a car with a displacement of 1.6 liters as an example, if a spoiler is installed, the air resistance coefficient is reduced by 20%. While the reduction in fuel consumption may not be noticeable on ordinary roads, driving on highways can save approximately 10% of fuel.
I just took a lap on the track, and the car's rear wing is designed to prevent the car from lifting at high speeds. You see, as the airflow passes over the trunk, the rear wing acts like a small wing pressing the wind downward, generating downforce to keep the rear wheels firmly on the road and reduce skidding. This is especially useful when cornering or overtaking—racing cars wouldn't dare drive without a rear wing. However, for regular cars, you need to measure the size carefully. Too large, and it increases drag, wasting fuel; too small, and it's ineffective. From my modification experience, an angle of around 30 degrees strikes the best balance—don’t just install flashy parts recklessly.
