Apparatus and method for PM purification
US7946111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2006 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Oct 30, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and a method for PM purification, where good PM purification performance can be achieved. The PM purification apparatus includes (a) a honeycomb support having an outer periphery-side region and an inner-side region, which carries a PM oxidation catalyst and in which the PM oxidation catalyst loading per unit volume of support in the outer periphery-side region is greater than the PM oxidation catalyst loading per unit volume of support in the inner-side region, (b) a center electrode passing through the center part of the honeycomb support and extending to the exhaust gas flow upstream side, and (c) an outer peripheral electrode disposed on the outer periphery of the honeycomb support and electrically insulated from the center electrode by the honeycomb support. The PM purification method can be performed using the PM purification apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.