Electromechanically controlled refueling valve
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United States of America Patent
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Feb 11, 2003
Issued Date -
N/A
app pub date -
Apr 27, 2001
filing date -
May 28, 1999
priority date (Note) -
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Abstract
An electronic onboard refueling vapor recovery (ORVR) system including an electrically operated ORVR valve that selectively opens and closes a fuel vapor path between a fuel tank and a collection canister. An electronic control circuit generates control signals to selectively open and close the ORVR valve. The electronic control circuit receives one or more inputs from one or a plurality of sensors and evaluates the one or more inputs to determine whether to activate the ORVR valve. The sensor inputs include at least a sensor indicating fuel is being introduced into the filler neck and may also include at least a sensor indicating a fuel level within the tank.
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