Tank ventilation device for a motor vehicle
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United States of America Patent
Stats
-
Mar 14, 2017
Grant Date -
Jan 9, 2014
app pub date -
Mar 16, 2012
filing date -
Mar 23, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tank ventilation device for a motor vehicle includes a ventilation line, connected on one side to an accumulator for gaseous hydrocarbons and connected on another side via a connection to a filling tube for filling a tank of the motor vehicle, wherein the ventilation line is connected to the tank so that gaseous hydrocarbons which are displaced during refueling are re-circulated toward the connection via the ventilation line, a device for applying a pressure on the ventilation line for carrying out a leakage test of the tank ventilation device, when the filling tube is closed with a closure device, and a float body provided in a region of the connection of the ventilation line to the filing tube for preventing entering of liquid fuel into the ventilation line.
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