System for measuring NOx content of exhaust gas
US7263823B2 · kind B2 · utility
10Cited by
17References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 2004 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | May 27, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B37/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system for measuring NOx content of an exhaust gas produced includes at least one controllable valve operable to direct exhaust gas to a NOx sensor only when measurement of the NOx content is desired and to otherwise expose the NOx sensor to ambient air. A control circuit controls the operation of the at least one valve and determines the NOx content of the exhaust gas based on sensory data received from the NOx sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.