Evaporative emission system test apparatus and method of testing an evaporative emission system
US7878046B2 · kind B2 · utility
4Cited by
23References
27Claims
0Family size
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Key dates
| Filing date | Jan 16, 2008 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Nov 27, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M25/0809
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A test apparatus for an evaporative emission system includes a source of pressure (positive or negative), a sensor for sensing the pressure generated in the evaporative emission system, and an ECU which controls the operation of the source of pressure and receives signals from the sensor reporting the pressure in the vehicle evaporative emission system over time. The ECU compares the sensed data with the stored data representing standard baseline sample vehicles without any leaks to determine the presence of a leak in the evaporative emission system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.