Particulate filter performance monitoring
US9032719B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2013 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Aug 19, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for particulate filter performance monitoring in an exhaust gas treatment system is provided. The method includes monitoring a current received from a soot sensor in the exhaust gas treatment system and comparing the current to a soot sensor current threshold. Based on determining that the current is greater than or equal to the soot sensor current threshold, an accumulated engine out soot value is compared to an accumulated engine out soot threshold. A particulate filter fault is set based on determining that the accumulated engine out soot value is less than the accumulated engine out soot threshold. A monitoring system and an exhaust gas treatment system of an engine are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.