Exhaust gas recirculation system with a NOx sensor
US8707935B2 · kind B2 · utility
7Cited by
15References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2009 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Feb 27, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Various systems and methods are described for operating an engine system having a sensor coupled to an exhaust gas recirculation system in a motor vehicle. One example method comprises during a first operating condition, directing at least some exhaust gas from an exhaust of the engine through the exhaust gas recirculation system and past the sensor to an intake of the engine and, during a second operating condition, directing at least some fresh air through the exhaust gas recirculation system and past the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.