Passat, where's the throttle?

Passat throttle valve is above the engine intake manifold and connected with the air cleaner. Above the intake manifold of Passat engine is a gas collection box, and the air filter is connected above the gas collection box. The throttle valve is located on the air inlet between the gas collection box and the engine, and is used to control the air intake of the engine. When the driver steps on the accelerator, the throttle will open, allowing air to enter the combustion chamber of the engine and mix with fuel to burn, thus driving the vehicle. Therefore, the throttle is a very important component in the engine control system, and its working state will affect the performance and fuel economy of the engine.