What is the black plastic panel under the front bumper?

[FelicityLee]

The black plastic panel under the front bumper is a deflector, which is fixed with screws or clips and can be removed by yourself. The main function of the deflector is to reduce the lift generated when the car is driving at high speed, thereby preventing the rear wheels from floating outward. If the car lacks a deflector, the difference in airflow pressure on the upper and lower surfaces during high-speed driving will naturally generate an upward lifting force, which not only consumes the car's power but also affects driving safety. The deflector adopts a blanking and punching scheme, which can improve production efficiency and quality. Due to the small hole spacing, the sheet material is prone to bending and deformation during punching. To ensure the strength of the mold working parts and produce qualified parts, the process adopts a staggered punching method. Because there are many holes, to reduce the punching force, the process mold uses high and low cutting edges.