Exhaust gas recirculation system fault detector
US5190017A · kind A · utility
52Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 1992 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | May 28, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M26/47
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The method for determining a fault in an exhaust gas recirculation system includes comparing the measured exhaust gas flow of the EGR system to an expected exhaust gas recirculation flow. If the two are not the same the time period that the expected exhaust gas recirculation flow deviates from the measured exhaust gas recirculation flow by a calibrated EGR flow amount is determined. A fault condition in the EGR system is indicated if the duration of the deviation exceeds a predetermined amount of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.