What is the state of the throttle valve after the engine shuts down?

[AdelineMarie]

When the car is turned off, the throttle valve is operational and remains in the closed position. Introduction to the throttle valve: The throttle valve is a controllable valve that regulates the entry of air into the engine. Once the air enters the intake pipe, it mixes with gasoline to form a combustible mixture, which then ignites to perform work. Connected to the air filter at the top and the engine block at the bottom, it is often referred to as the throat of the car engine. Classification of throttle valves: Throttle valves are categorized based on their intake methods into straight-through and bypass types. The straight-through throttle valve maintains the same opening degree when the engine is off as it does during idle, while the bypass throttle valve adjusts the amount of air intake through the bypass air passage via the idle control valve.