Onboard refueling vapor recovery

（重定向自ORVR）

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. There are two types of vehicle emission control systems: the ORVR, and the Stage II vapor recovery system. 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. However, an ORVR system is able to retain those emissions, delivering them to the vehicle's carbon-filled canister and then to dispose of those vapors by adding them to the engine intake manifold and the stream of fuel supplying the engine, during normal operation. The goal behind implementing the ORVR system throughout the U.S. is to eventually make the Stage II systems obsolete.

词汇	ORVR
分类	英语词汇英语翻译词典
释义	ORVR 英语百科 Onboard refueling vapor recovery （重定向自ORVR） 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. There are two types of vehicle emission control systems: the ORVR, and the Stage II vapor recovery system. 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. However, an ORVR system is able to retain those emissions, delivering them to the vehicle's carbon-filled canister and then to dispose of those vapors by adding them to the engine intake manifold and the stream of fuel supplying the engine, during normal operation. The goal behind implementing the ORVR system throughout the U.S. is to eventually make the Stage II systems obsolete.
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