Global InformationOnboard refueling vapor recovery information
An onboard refueling vapor recovery system (ORVR) is a vehicle fuel vapor emission control system that captures volatile organic compounds (VOC, potentially harmful vapors) during refueling.[1][page needed] There are two types of vehicle fuel vapor emission control systems: the ORVR, and the Stage II vapor recovery system.[2] Without either of these two systems, fuel vapors trapped inside gas tanks would be released into the atmosphere, each time refueling of the vehicle occurred.[3] However, an ORVR system is able to retain those emissions, delivering them to the vehicle's activated carbon-filled canister and then to dispose of those vapors by adding them to the engine's inlet manifold and the stream of fuel supplying the engine, during normal operation.[3] The goal behind implementing the ORVR system throughout the U.S. is to eventually make the Stage II systems obsolete.
- ^ EPA, US. "US Environmental Protection Agency". www3.epa.gov. Retrieved 2015-10-20.
- ^ "Stage II Vapor Recovery | Petroleum Equipment Institute". pei.org. Petroleum Equipment Institute. Retrieved 2015-10-21.
- ^ a b "Retooling the Vapor Recovery System: Part 1 - Looking Back with PE& - PetrolPlaza - Technology corner". www.petrolplaza.com. Retrieved 2015-10-21.