| 摘要 |
A fuel tank with ventilation system and activated carbon filter which, on the one hand, is connected by a first line ( 22 ) to the fuel tank and by a second line ( 25 ) to an internal combustion engine, and, on the other hand, by a third line ( 26 ) to the atmosphere, should have as simple and compact a ventilation system as possible, which fulfills all functions in full measure. To this end, a controlled two-way valve unit ( 23 ) is provided, whereof the first path connects the first line ( 22 ) to the third line ( 26 ) and the second path connects the second line ( 25 ) to the third line ( 26 ), and an electronic control unit ( 28 ) is provided, which on the input side is connected to a refueling sensor ( 7 ) and to a liquid level sensor ( 13 ) and on the output side is connected to the controlled two-way valve unit ( 23 ). The controlled two-way valve unit ( 23 ) comprises two valves ( 45, 46 ) accommodated in a common housing ( 40 ) and having closing bodies ( 47, 48 ), whereof the first ( 47 ) closes off or opens up the first path and the second ( 48 ) closes off or controllably opens up the second path.
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