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Home >> Cadillac >> 2013 >> Escalade Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Engine Controls/Fuel - Hybrid (LZ1) - Description And Operation) >> Description and Operation >> Fuel System Description >> On-Board Refueling Vapor Recovery System (ORVR)

On-Board Refueling Vapor Recovery System (ORVR)

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The On-Board Refueling Vapor Recovery System (ORVR) is an on-board vehicle system designed to recover fuel vapors during the vehicle refueling operation. The flow of liquid fuel down the fuel filler pipe provides a liquid seal which prevents vapor from leaving the fuel filler pipe. An evaporative emission (EVAP) pipe transports the fuel vapor to the EVAP canister for use by the engine.

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