Method for testing the functionality of a tank venting system of a motor vehicle having an internal combustion engine
US7073376B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2005 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Jan 18, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M25/0809
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for testing the functionality of a tank system of a motor vehicle having an internal combustion engine, including a controllable tank venting valve connected to an intake manifold and at least one pressure source for testing the tightness of the tank venting system using overpressure or underpressure, the functionality of the tank venting valve being tested via its activation in an opening and/or closing manner during pressurizing the tank system using overpressure or underpressure and by registering and evaluating at least one operating variable of the pressure source. The tank system is pressurized with overpressure or underpressure and the at least one operating variable of the pressure source is registered and evaluated during operation of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.