Electrically controlled refueling vapor vent shutoff

Details Electrically controlled refueling vapor vent shutoff Electrically controlled refueling vapor vent shutoff

2011-01-11

2011-01-11

Maust, Timothy L (Department: 3751)

Fluent material handling, with receiver or receiver coacting mea

Automatic control of flow cutoff or diversion

Level or overflow responsive

C141S045000, C141S050000, C141S052000, C141S301000

Reexamination Certificate

active

07866356

ABSTRACT:
A vapor emission control system includes an electrically operated shutoff valve in the fuel vapor vent recirculation line to the filler tube. The electrically operated valve is controlled by an electronic controller responsive to signals from a fuel level indicator and a fuel cap sensor in the tank. In one embodiment, the valve closes when the fuel level indicator indicates a full tank condition and when the fuel cap sensor indicates that the fuel cap is off the filler neck. The present invention thus provides a positive shutoff of fuel vapor to the filler tube during refueling.

REFERENCES:
patent: 5944076 (1999-08-01), Palvoelgyi
patent: 6176259 (2001-01-01), Harde et al.
patent: 6854492 (2005-02-01), Benjey

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