Title:
TANK VENTILATION DEVICE FOR A MOTOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2012/126593
Kind Code:
A3
Abstract:
The invention relates to a tank ventilation device (10) for a motor vehicle. A fuel tank (12) can be filled with fuel via a filler pipe (14). A ventilation line (20) is connected at one side to the filler pipe (14) and at the other side to an activated carbon filter (26). To carry out a leak test of the tank ventilation device (10), the ventilation line (20) can be pressurized by means of a device (36) when the filler pipe (14) is closed by means of a tank cover. In the region of a connection (18) of the ventilation line (20) to the filler pipe (14) there is provided a float body by means of which an ingress of liquid fuel into the ventilation line (20) can be prevented. In this way, a hydraulic closure of the ventilation line (20) can be prevented if said ventilation line has a siphon (22).
Inventors:
REVINK INGO (DE)
JUST THOMAS (DE)
JUST THOMAS (DE)
Application Number:
PCT/EP2012/001171
Publication Date:
December 06, 2012
Filing Date:
March 16, 2012
Export Citation:
Assignee:
AUDI AG (DE)
REVINK INGO (DE)
JUST THOMAS (DE)
REVINK INGO (DE)
JUST THOMAS (DE)
International Classes:
B60K15/035
Foreign References:
| US5027868A | 1991-07-02 | |||
| US4798306A | 1989-01-17 | |||
| EP1955888A2 | 2008-08-13 | |||
| DE4420960A1 | 1995-12-21 | |||
| US20040144443A1 | 2004-07-29 |
Attorney, Agent or Firm:
PATZELT, Heike (PatentabteilungPostfach 1144, Neckarsulm, DE)
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