1.8t What is the pipe under the Passat throttle?

1.8t The pipe under Passat throttle is called exhaust pipe. The function of the exhaust pipe is to pump out the engine exhaust gas under certain working conditions, and send part of the exhaust gas discharged by the engine back to the intake manifold, and then re-enter the cylinder together with the fresh mixed gas to participate in the combustion work. Because the exhaust gas can't burn, the combustion speed and temperature in the cylinder are reduced, thus improving the emission and reducing the pollutant content.

Definition of throttle valve

Throttle four-stroke gasoline engines are generally like this. Throttle is one of the most important components in EFI automobile engine system. Its upper part is the air cleaner grille, and the lower part is the engine body, which is the throat of the automobile engine.

Two water pipes are used for cooling, and the small pipe above the intake pipe is used for waste gas circulation. A controllable valve that controls air to enter the engine. After the air enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, which will be successfully formed after combustion. It connects the air filter and the engine block, and is called the throat of the automobile engine.