EVAPsystemets

EVAPsystemets is a term that translates from Swedish to English as "the EVAP system." EVAP stands for Evaporative Emission Control System. This system is a crucial component in modern gasoline-powered vehicles designed to reduce the amount of hydrocarbon vapors released into the atmosphere from the fuel system. Gasoline is volatile, and its vapors can escape from the fuel tank, fuel lines, and other parts of the fuel system. These escaping vapors are harmful air pollutants that contribute to smog formation.

The EVAP system works by capturing these fuel vapors and storing them in a charcoal canister. The charcoal absorbs the vapors, preventing them from escaping. Later, when the engine is running and at the correct temperature, the system purges these stored vapors into the engine's intake manifold to be burned as fuel. This process ensures that the fuel vapors are consumed by the engine rather than released into the environment.

The EVAP system consists of several components, including the fuel tank, fuel lines, charcoal canister, purge valve, vent valve, and various sensors and hoses. The onboard diagnostic (OBD) system monitors the EVAP system for leaks and malfunctions. If a problem is detected, a check engine light may illuminate on the dashboard, indicating that the EVAP system requires inspection and repair. A properly functioning EVAP system is essential for meeting emissions standards and protecting air quality.