Device for diagnosis of a tank ventilation system of a vehicle
US6112728A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1998 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Aug 17, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M25/0818
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device for diagnosis of a tank ventilation system of a vehicle, including a tank, an adsorption filter that communicates with the tank by way of a tank connection line and has a ventilation line, a tank ventilation valve that communicates with the adsorption filter by way of a valve line, and an on-board pressure source, by means of which the tank ventilation system can be acted upon with a pressure. A shut-off device is provided that only opens when the tank ventilation system is acted on with pressure by means of the on-board pressure source and closes when the tank ventilation system is acted on with pressure by means of a pressure source connected externally for the purpose of functionality testing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.