Method and system for adjusting a fuel tank isolation valve
US9464601B2 · kind B2 · utility
2Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2013 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Dec 9, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0318
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for adjusting and diagnosing a position of a fuel tank isolation valve of a fuel system. In one example, a method may include adjusting the fuel tank isolation valve via electrical pulses and tracking a position of the FTIV by counting each of the electrical pulses. When a vacuum is created in the fuel system, the method may include verifying the position of the FTIV based on resulting fuel system pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.