17987163. METHOD AND SYSTEM FOR EVALUATING A NOx SENSOR simplified abstract (GM GLOBAL TECHNOLOGY OPERATIONS LLC)
Contents
- 1 METHOD AND SYSTEM FOR EVALUATING A NOx SENSOR
- 1.1 Organization Name
- 1.2 Inventor(s)
- 1.3 METHOD AND SYSTEM FOR EVALUATING A NOx SENSOR - A simplified explanation of the abstract
- 1.4 Simplified Explanation
- 1.5 Potential Applications
- 1.6 Problems Solved
- 1.7 Benefits
- 1.8 Potential Commercial Applications
- 1.9 Possible Prior Art
- 1.10 Unanswered Questions
- 1.11 Original Abstract Submitted
METHOD AND SYSTEM FOR EVALUATING A NOx SENSOR
Organization Name
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor(s)
Erika L. Pruski of Brighton MI (US)
Janean E. Potter of Northville MI (US)
Rafat F. Hattar of Royal Oak MI (US)
METHOD AND SYSTEM FOR EVALUATING A NOx SENSOR - A simplified explanation of the abstract
This abstract first appeared for US patent application 17987163 titled 'METHOD AND SYSTEM FOR EVALUATING A NOx SENSOR
Simplified Explanation
The concepts described herein relate to a system, method, and/or apparatus for monitoring a NOx sensor that is arranged in an exhaust gas feedstream of an internal combustion engine downstream of an exhaust aftertreatment system to detect a fault related to the NOx sensor. This includes utilizing a catalyst efficiency model to detect occurrence of a fault that may indicate an in-range biased or stuck NOx sensor.
- NOx sensor monitoring system for internal combustion engines
- Utilizes a catalyst efficiency model to detect faults in the NOx sensor
- Positioned downstream of exhaust aftertreatment system
- Detects in-range biased or stuck NOx sensor
Potential Applications
The technology can be applied in the automotive industry for monitoring and maintaining the efficiency of NOx sensors in internal combustion engines.
Problems Solved
1. Detection of faults in NOx sensors 2. Ensuring accurate emissions control in vehicles
Benefits
1. Improved accuracy in emissions control 2. Early detection of NOx sensor faults 3. Enhanced engine performance
Potential Commercial Applications
Optimizing emissions control in vehicles for compliance with environmental regulations.
Possible Prior Art
Prior art may include similar systems for monitoring and diagnosing faults in sensors used in exhaust aftertreatment systems of internal combustion engines.
Unanswered Questions
How does the catalyst efficiency model improve fault detection in NOx sensors?
The catalyst efficiency model helps in detecting faults by comparing the expected performance of the NOx sensor with the actual readings, allowing for early identification of issues.
What are the specific fault indicators that the system can detect in a NOx sensor?
The system can detect faults such as in-range biased or stuck NOx sensors, which can impact the accuracy of emissions control in vehicles.
Original Abstract Submitted
The concepts described herein relate to a system, method, and/or apparatus for monitoring a NOx sensor that is arranged in an exhaust gas feedstream of an internal combustion engine downstream of an exhaust aftertreatment system to detect a fault related to the NOx sensor. This includes utilizing a catalyst efficiency model to detect occurrence of a fault that may indicate an in-range biased or stuck NOx sensor.
