Evaporative Emissions System: Description and Operation
Evaporative & ORVR Emission Control SystemEvaporative And ORVR Emission Control System:
The evaporative emission control system reduces HC gas by trapping fuel tank vapors until they can be burned as part of the incoming fuel charge. Evaporating fuel is stored in a charcoal canister until it can be flushed into the intake manifold and ORVR system is designed for the evaporative gas of the fuel tank to be trapped into the canister while refueling, so as not to escape the gas into the atmosphere.