Exhaust gas purification system utilizing ozone
US8051643B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2006 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Dec 27, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2240/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An exhaust gas purification system provided with a trapping device (6) arranged on an engine exhaust passage and trapping particulate matter in the exhaust gas, an ozone generator (21) for generating ozone, and an ozone adsorbent (22) able to adsorb ozone, wherein at least part of the ozone generated by said ozone generator is adsorbed by said ozone adsorbent and, when particulate matter trapped on said trapping device should be removed, ozone adsorbed on the ozone adsorbent is desorbed from the ozone adsorbent and supplied to the trapping device. Due to this, it is possible to use an ozone generator with a relatively low ozone generating ability to burn off PM trapped on a filter etc. efficiently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.