Exhaust gas purifying apparatus, exhaust gas purifying method, and particulate matter measuring method
US7866146B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Sep 7, 2007 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | Dec 1, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An exhaust gas purifying apparatus includes a primary diesel particulate filter provided in an exhaust line of a diesel engine, a secondary exhaust line branched from the exhaust line from an upstream side of the primary diesel particulate filter, and a secondary diesel particulate filter provided in the secondary exhaust line. The secondary diesel particulate filter has a soot storage capacity smaller than the soot storage capacity of the primary diesel particulate filter. The apparatus further includes a differential pressure measuring part for measuring a differential pressure between an inlet and an outlet of the secondary diesel particulate filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.