Fuel system diagnostics
US9243591B2 · kind B2 · utility
2Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2012 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Nov 27, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M25/0809
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and system are provided for identifying unintended closing (or corking) of a mechanical valve coupled to a fuel tank. If tank vent valve corking is identified during a leak test, fuel tank pressure data collected during the leak test is disregarded and not used to determine a fuel system leak. Instead, a fuel system leak test is repeated to improve reliability of test results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.