Maintenance method for particulate filter
US7909916B2 · kind B2 · utility
1Cited by
10References
4Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 5, 2006 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | Oct 18, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2450/30
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Provided is a method for performing maintenance of a particulate which can reliably remove combustion residue by means of backwash air without use of hot water and the like while cutting equipment expenses, so that substantial increase in exhaust pressure and deterioration of fuel economy during operation can be prevented.When maintenance of the particulate filter 4 is to be performed, a filler 13 is filled to each of passages 8 with outlets unplugged with plugs 9 so as to reduce an inner volume of the passage 8, and then backwash air 12 is blown into the passages 8 with the unplugged outlets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.