Method and apparatus for monitoring a particulate filter
US9051866B2 · kind B2 · utility
11Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 2012 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Sep 19, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An internal combustion engine includes a particulate filter that is configured to treat exhaust gas. A method for monitoring the particulate filter includes employing a soot sensor to monitor the exhaust gas downstream of the particulate filter. A fault is detected in the particulate filter when accumulated soot mass indicated by the soot sensor exceeds a soot mass threshold over a course of engine operation between a first regeneration event and a second regeneration event of the particulate filter. A control module associated with operation of the internal combustion engine is notified of the fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.