In order to minimize evaporative emissions of hydrocarbons, an activated charcoal filter traps the hydrocarbon vapors from the tank. Part of the intake air is routed through this filter and carries the hydrocarbon vapors into the engine cylinder where they are burned as part of the air-fuel mixture. The canister purge valve TEV measures this airflow in accordance with the engine's operating state.


for plugs, intake and outlet arrangement and flow variants


air flow control and small tolerances due to pressure compensation

approx. 60 g

Compact design in basic version

5.2 – 7.5 m³/h

Variable airflow rates