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What are the functions and common failures of carbon canister solenoid valve?

10-10,2024

Carbon canister solenoid valve is a common component in automotive fuel systems. It serves the main purpose of controlling gas emission in carbon canister. The main functions of a carbon canister solenoid valve include the following:

Control vapor emission: The carbon canister collects and stores fuel vapor, and the solenoid valve can control the release of gas in the carbon canister depending on the engine's operating status, and avoid direct emission of vapor into the atmosphere.

Improve fuel efficiency: By controlling the circulation of vapor, the solenoid valve can reduce loss of fuel due to volatilization, thereby improving the vehicle fuel efficiency.

Reduce pollution: There are clear provisions in environmental regulations on the control of the emission of volatile organic compounds (VOCs) by modern vehicles, and carbon canister solar valve can effectively reduce environmental pollution caused by cars.

Facilitate failure detection: The status of the solenoid valve can be monitored by a diagnostic system. In the case of failure, the car's failure indicator will light up to facilitate timely maintenance.

Common failures of carbon canister solenoid valve:

Solenoid valve failure: Abnormal power supply or open circuit or short circuit of coil can prevent the valve from opening or closing properly, and consequently interfere with normal release or collection of fuel vapor. Common reasons include the following:

Leakage: Poor sealing of the solenoid valve due to aging or damage of sealing material can result in fuel vapor leakage, thus affecting the vehicle's emission system and increasing pollution.

Blockage: The carbon canister solenoid valve or its connecting pipes may be blocked by dirt or impurities. As a result, the gas flow will be affected, and the system will experience malfunction.

Sensor failure: A failure of sensors related to the solenoid valve (such as pressure sensor or flow sensor) may also affect normal operation of the solenoid valve, generate incorrect signals, and impact its control.

Overheating: After working under high load conditions for long, the solenoid valve coil may fail due to overheating, and experience open or short circuit.

Computer failure: A failure or programming error of the electronic control unit (ECU) of the vehicle may result in inaccurate control of the solenoid valve.

Connection issues: Loose or corroded cables of the solenoid valve may also affect its normal operation.

vika STO carbon canister solenoid valve

Advantages of vika STO carbon canister solenoid valve:

The linear core needle of vika STO carbon canister solenoid valve is based on a resistance welding process, which makes it less likely to fall off and firmer.

The body of vika STO carbon canister solenoid valve can be adjusted to achieve a higher level of sealing accuracy and higher durability.

The vika STO carbon canister solenoid valve adopts an armature sub-assembly sheet structure for sealing, which leads to better sealing effect.