Checking functionality of fuel tank vapor pressure sensor
US8342157B2 · kind B2 · utility
21Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2010 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Apr 9, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M25/0809
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vehicle fuel emissions system includes a fuel tank, a tank pressure sensor indicating a pressure differential between the tank and a port communicating with the atmosphere, a pump for selectively producing vacuum in the tank, and a passage connecting the pump and a pressure sensor air reference port external to the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.