Where is the classic transit throttle?

Located at the air intake of the automobile engine. Air is controlled to enter the engine, and then mixed with gasoline into a combustible mixture after entering the intake pipe, so that its combustion is successful. Throttle is 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, and the combustion is successful. It is called the throat of an automobile engine, which is connected with the air filter and the engine block.