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HYDROCARBON SENSOR FOR PURGING CANISTER OF EXTENDED RANGE ELECTRIC VEHICLE

  • US 20130152905A1
  • Filed: 12/14/2012
  • Published: 06/20/2013
  • Est. Priority Date: 12/19/2011
  • Status: Abandoned Application
First Claim
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1. An evaporative fuel vapor control system for extended range electric vehicle (EREV), the system comprising:

  • a fuel supply for storing fuel that generates fuel vapor in the fuel supply,an internal combustion engine constructed and arranged to be supplied with fuel from the fuel supply,a vapor canister having a vapor passage disposed in fluid communication with the fuel supply to retain fuel vapor from the fuel supply and having a purge passage in fluid communication with the engine,a hydrocarbon sensor constructed and arranged to determine when hydrocarbon saturation is occurring in the canister,a vapor control valve disposed in the purge passage between the engine and the vapor canister, anda controller electrically connected with the hydrocarbon sensor and with the control valve such that when the controller receives a signal from the hydrocarbon sensor indicating that the engine should be started to purge the canister, the controller is constructed and arranged to cause the control valve to control a flow of fuel vapor from the purge passage while the engine is operating.

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