Venting device for the fuel tank of a motor vehicle
US4940101A · kind A · utility
4Cited by
0References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1989 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Nov 21, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2025/0881
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A venting device for the fuel tank of a motor vehicle has a venting line in which a fuel vapor filter is disposed. The filter is connected to the atmosphere through an aeration device, the outlet of which lies in the road region of the vehicle. To prevent an excessive vacuum arising in the venting system, when the outlet is plugged, a vacuum limiting valve is connected to the aeration line. This valve, at a particular vacuum in the aerating line, connects this line with the atmosphere at a place above the outlet of the aeration line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.