×

Electromechanical refueling control system

  • US 6,167,920 B1
  • Filed: 05/28/1999
  • Issued: 01/02/2001
  • Est. Priority Date: 05/28/1999
  • Status: Expired due to Term
First Claim
Patent Images

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 at least one of the introduction of fuel into the fuel tank and the introduction of a filler nozzle into a filler neck of the fuel tank, defined as a fueling event;

    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.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×