What is the car carbon canister used for? Is the car carbon canister special or universal?

The carbon canister is a canister filled with activated carbon. It is a component of the car. Although it is not so eye-catching, it will still have a significant impact if it fails. So what is the specific use of the car carbon canister?

What is the car carbon canister used for?

There are two main functions of installing carbon canisters in cars: one is environmental protection, and the other is energy saving.

Between our car's fuel tank and the engine's intake pipe, there is a small box filled with activated carbon. This box is the carbon canister. Relying on the adsorption characteristics of activated carbon, it removes excess oil and gas from our fuel tank and then stores them. When our engine is working, these things are sent back into the engine for combustion.

In short, the purpose is to keep the fuel tank of the car in a reasonable pressure working range. If the gas pressure of the fuel tank of the car is too high, it will cause our car's fuel tank cap to be unable to open, and even in the event of a collision, it will be very dangerous. If the pressure is too low, some oil and gas will be volatilized and wasteful, so there is a carbon canister.

The carbon canister, a small thing, not only prevents the fuel vapor from being discharged into the air, causing a waste of gasoline, but also has some positive effects on our environmental protection. So here we also remind everyone not to fill up too much or too quickly when refueling, to prevent our gasoline or gasoline vapor from backflowing and causing the spark plug to drown, which is what we call the nozzle flooding situation.

Is the car carbon canister dedicated or universal?

Car carbon canisters are generally not universal, they have different sizes and specifications. You can find a universal model, and there is no need to buy them all at 4S stores.

Because car carbon canisters are divided into different models and displacements, and the carbon canisters are generally installed in different locations, and the size and appearance are also different. In addition, the pipes installed on them will not be sealed tightly, which will cause leakage and generally will not work. Therefore, carbon canisters of different models are generally not interchangeable.

How does a car carbon canister work?

When the car is turned off, the unique volatility of the fuel will cause the gasoline in the fuel tank to be released. When the car is not equipped with a carbon canister, the released fuel vapor is directly discharged into the atmosphere, which is a waste and causes air pollution. The carbon canister is a device installed in the closed space between the car's fuel tank and the engine's intake manifold. When the engine is turned off, the fuel will evaporate and will directly enter the carbon canister through the pipeline. The carbon canister will store the oil vapor. When the engine is working, the solenoid valve between the carbon canister and the engine opens, and the fuel vapor adsorbed in the carbon canister is sent to the engine for combustion using the vacuum adsorption principle.