What is the purpose of an automotive carbon canister?
2 Answers
The functions of an automotive carbon canister are as follows: 1. There are two main purposes for installing a carbon canister in a car: one is environmental protection, and the other is energy saving. 2. Relying on the adsorption characteristics of activated carbon, the carbon canister stores excess fuel vapor from the fuel tank and reintroduces it into the engine for combustion when the engine is running. 3. To maintain a reasonable pressure range in the car's fuel tank. If the fuel tank pressure is too high, it may cause the fuel cap to become difficult to open, and in the event of a collision, it could be very dangerous. If the pressure is too low, some fuel vapor may evaporate, leading to waste—hence the need for a carbon canister. 4. The carbon canister prevents fuel vapor from being emitted into the air, avoiding gasoline waste, and also has a positive impact on environmental protection.
I'm an old hand at the auto repair shop, dealing with all kinds of car issues every day. The vehicle's charcoal canister is mainly used to collect gasoline vapors from the fuel tank, preventing them from escaping into the air and polluting the environment. When the temperature of the gasoline in the tank changes, it tends to evaporate. Without a charcoal canister, these vapors would either leak out from the fuel filler, making the car smell like gasoline, or simply go to waste. Inside the canister are activated carbon particles that absorb the vapors like a sponge. When the engine is running, these vapors are drawn into the intake manifold and burned. This not only helps the environment but also saves a bit of fuel. If the charcoal canister gets clogged, the engine may experience rough idling or poor acceleration. I've seen many car owners come in for repairs because of this issue.