What does the Skoda Haorui 1 8t fuel evaporation control system mean

The role of the fuel evaporation control system is to prevent gasoline vapors that evaporate from the fuel tank of the car from being emitted into the atmosphere. It is composed of a steam ** tank (also known as an activated carbon tank), a control solenoid valve, a steam separation valve and the corresponding steam pipeline and vacuum hose. The vapor separation valve is installed on the top of the fuel tank, and the gasoline vapor in the fuel tank enters the vapor ** tank through the pipe through the outlet of this valve.

The purpose of this valve is to prevent the fuel in the fuel tank from leaking out of the vapor pipe when the car is overturned. The steam ** tank is filled with activated carbon particles, so it is also called activated carbon tank. Activated carbon can adsorb gasoline molecules in gasoline vapor.

When the gasoline vapor in the fuel tank enters the vapor ** tank through the vapor pipeline, the gasoline molecules in the vapor are adsorbed by activated carbon. Another outlet above the vapor** tank communicates with the engine intake manifold via a vacuum hose. There is a solenoid valve in the middle of the hose to control the opening and closing of the line.

When the engine is running, if the solenoid valve is opened, under the action of vacuum suction of the intake manifold, fresh air will enter from under the vapor canister, and then enter the engine intake manifold of the hose from the outlet of the steam tank after the activated carbon, and send the gasoline molecules adsorbed on the activated carbon (re-evaporated) into the engine for combustion, so that it can be fully utilized; The activated carbon in the vapor** tank then restores its adsorption capacity and will not fail due to too long use. The amount of fuel vapor entering the intake manifold must be controlled to prevent disruption of the normal mixture composition. This control process is realized by the microcomputer according to the operating parameters such as water temperature, speed, throttle opening, etc., and controls the opening and closing of the solenoid valve by manipulating.

When the engine is shut down or idling, the microcomputer closes the solenoid valve, and the fuel vapor escaping from the tank is absorbed by the activated carbon in the vapor** tank. When the engine is running at medium and high speeds, the microcomputer opens the solenoid valve, and the gasoline vapor stored in the vapor ** tank is sucked into the engine after passing through the vacuum hose. In this case, because the engine has a large air intake, a small amount of fuel vapor does not affect the composition of the mixture.

Function: The function of the fuel evaporation control system is to prevent the evaporation of gasoline vapor from the fuel tank of the car from being discharged into the atmosphere.

Principle: the fuel vapor of the fuel tank enters the upper part of the activated carbon tank through the one-way valve, and the air enters the cleaning activated carbon from the lower part of the carbon tank, and there is a certain amount of emission hole and the emission control valve controlled by vacuum in the upper right side of the carbon tank, and the vacuum degree inside the sand pot of the emission control valve is controlled by the solenoid valve controlled by the carbon canister, and the solenoid valve is controlled.

Fuel evaporative emission control: also known as gasoline vapor emission control system, is one of the auxiliary control systems of automobile engine, and also one of the emission control systems of automobile engine.

Composition and working principle:

The fuel vapor of the fuel tank enters the upper part of the activated carbon tank through the check valve, and the air enters the cleaning activated carbon from the lower part of the carbon canister, and there is a certain amount of discharge hole and the emission control valve controlled by vacuum control in the upper right side of the carbon canister, and the vacuum degree inside the sand pot of the emission control valve is controlled by the solenoid valve controlled by the carbon canister, and the solenoid valve is controlled.

The fuel evaporative emission control system is mainly composed of an activated carbon tank storage device, a fuel evaporation purification control device and a fuel tank fuel evaporation control device.

Gasoline is a volatile liquid, the fuel tank is often filled with vapors at room temperature, and the role of the fuel evaporation control system is to introduce vapors into combustion and prevent volatilization into the atmosphere. This process plays an important role in the activated carbon canister storage device, because the activated carbon has an adsorption function, when the car is running or turned off, the gasoline vapor from the fuel tank enters the upper part of the activated carbon tank through the pipeline, and the fresh air enters the activated carbon tank from the lower part of the activated carbon canister. After the engine is turned off, the gasoline vapor is mixed with fresh air in the tank and stored in the activated carbon canister, when the engine starts, the electromagnetic valve of the fuel evaporation purification device installed between the activated carbon canister and the intake manifold is opened, and the gasoline vapor in the activated carbon canister is sucked into the intake manifold to participate in combustion.

Hello, this is the canister solenoid valve plug is loose. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

The function of the automobile fuel evaporative emission control system is to collect the gasoline vapor evaporated in the gasoline tank and introduce the gasoline vapor into the cylinder to participate in combustion, so as to prevent the gasoline vapor from being directly discharged into the atmosphere and causing pollution. At the same time, it can also control the amount of gasoline vapor introduced into the cylinder for combustion according to the engine operating conditions.

In cars equipped with automotive fuel evaporative emission control systems, there is only an air valve on the fuel tank cap, not a gasoline vapor release valve. When the engine is working, the ECU controls the vacuum degree of the upper part of the vacuum control valve by controlling the opening and closing of the solenoid valve of the carbon tank according to the engine speed, temperature, air flow and other signals, so as to control the opening of the vacuum control valve. When the vacuum control valve is opened, fuel vapor is sucked into the intake manifold through the vacuum control valve.

When the engine is idle or the temperature is low, the ECU de-energizes the solenoid valve and closes the suction channel, so that the fuel vapor in the activated carbon tank cannot be sucked into the intake manifold.

If it is a sedan, it is basically on the small side of the hood, generally near the air filter, and most of the van is under the passenger seat. If the location of the motorcycle is basically not fixed, each manufacturer or model is different, and their location is not the same, but two ways can be found directly: 1

Straddle bikes have a rubber hose at the bottom of the fuel tank, which can be found by following that rubber hose. 2.The scooter is easier to find, and the carbon canister can be found along the rubber tube on the fuel tank as well.

Hello. The main impact is that the pressure in the fuel tank is too high, the fear of fuel overflow, the accumulation of fuel in the carbon canister and the smell of gasoline in the car. It will also cause unstable idle speed and high fuel consumption.