The catching system паров fuels prevents evaporation паров fuels in the atmosphere from a fuel tank therefore formation of a photochemical smog is prevented.
Pairs of fuel accumulate in the canister with absorbent carbon. At operation of the engine the electronic control unit (RSM) opens the valve and pairs of fuel arrive in the engine where there is their combustion.
The control valve is used for management of pressure паров fuels in a fuel tank.