Because the intake air is sucked in by vacuum, the exhaust air is squeezed out. Secondly, in order to get more fresh air inside the engine and improve the dynamic performance of the whole vehicle, more air intake is naturally needed.

Automobile valve, also known as throttle, is responsible for inputting fuel to the engine and discharging exhaust gas. From the engine structure, it is divided into intake valve and exhaust valve. The intake valve sucks air into the engine and burns it with the fuel, while the exhaust valve discharges the burnt exhaust gas to dissipate heat. Million car purchase subsidy