System for exhaust gas purification and method of controlling the same
US8528320B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2009 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Apr 14, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A system for exhaust gas purification including, in an exhaust passage of an internal combustion engine in order from an upstream side: a device for direct injection into the exhaust pipe, an oxidation catalyst, and at least one of a catalyst for NOx removal and a catalyzed diesel particulate filter. A support of the oxidation catalyst is a metallic material or a material having a specific heat not higher than that of the metallic material, and has a structure that mixes the exhaust gas. Regeneration of the NOx occlusion/reduction type catalyst by NOx removal and the forced regeneration of the catalyzed diesel particulate filter by particulate matter removal can occur even when the engine is operated under low-load conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.