Exhaust purification system for internal combustion engine
US9057299B2 · kind B2 · utility
0Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2012 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Jun 29, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N3/085
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A wall flow type particulate filter is arranged inside the exhaust passage of an internal combustion engine where combustion is performed under an excess of oxygen. The particulate filter carries an ash atomization agent. To remove the ash from the particulate filter, ash atomization processing for rendering the state of the particulate filter a state where the exhaust gas which flows into the particulate filter is lowered in concentration of oxygen and the particulate filter is raised in temperature is temporarily performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.