What is the function of the car's activated carbon canister solenoid valve?
2 Answers
The function of the car's activated carbon canister solenoid valve: to reduce air pollution caused by fuel evaporation emissions and simultaneously increase fuel efficiency. When the car starts, the solenoid valve opens, releasing the adsorbed fuel vapor into the intake pipe, which then enters the engine for combustion. The carbon canister is a key device in this system, responsible for collecting and storing gasoline vapor. The carbon canister installed in the car is actually an assembly, with its shell generally made of plastic, filled internally with activated carbon particles that can adsorb vapor. The top is equipped with a purge control valve to regulate the amount of gasoline vapor and air entering the intake manifold, as well as a filter screen to purify the gasoline vapor, among other components.
After driving for over a decade, I finally understood that the activated carbon canister purge valve is the key component for gasoline vapor recovery. When parked, it directs those gasoline-smelling vapors from the fuel tank to be stored in the carbon canister; as soon as the engine starts, the valve immediately opens to let the vapors enter the combustion chamber to be burned. This not only prevents air pollution but also saves some fuel. I remember one summer when I kept smelling gasoline – it was because this thing got clogged, allowing vapors to leak out, which was particularly dangerous. Timely inspection is crucial, especially for older cars. During regular maintenance, have the mechanic check the ventilation. Otherwise, vehicle emissions tests might easily exceed standards. Pay extra attention to unusual smells or unstable idling, as these could be related.
