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Electromechanical refueling control system

  • US 6,443,190 B1
  • Filed: 12/12/2000
  • Issued: 09/03/2002
  • Est. Priority Date: 05/28/1999
  • Status: Expired due to Term
First Claim
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1. A method for recovering vapor during an onboard refueling operation in a vehicle comprising the steps of:

  • providing a flow path between a fuel tank and a collection canister;

    providing a fueling event sensor for detecting fuel flow into the fuel tank;

    providing an ORVR solenoid valve in the flow path;

    actuating the ORVR valve in accordance with the output of the fueling event sensor to selectively open and close the flow path;

    providing a level sensor for detecting a predetermined fuel level in the fuel tank; and

    actuating the ORVR valve to selectively open and close the flow path in accordance with an electrical signal output of the fueling event sensor and the level sensor.

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