Method of diagnosing an exhaust gas sensor
US9970372B2 · kind B2 · utility
11Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2014 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Mar 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Embodiments for an engine exhaust are provided. In one example, a method comprises categorizing each respective concentration of a plurality of exhaust gas constituents measured by a gas analyzer into one of oxidants or reductants, the gas analyzer receiving exhaust gas flow from an engine. The method also includes determining an exhaust air-fuel ratio based on the categorized concentrations and validating output from an exhaust gas sensor receiving exhaust gas flow from the engine based on the determined exhaust air-fuel ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.