Exhaust system for an internal combustion engine
US8006487B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2007 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Mar 11, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention relates to an exhaust system for an internal combustion engine, in particular in a motor vehicle, comprising an exhaust line in which an exhaust treatment device, in particular an oxidation catalyst or a particulate filter is arranged for treating the exhaust gases coming from the internal combustion engine. It is essential to this invention that a device for heating the exhaust gases in the exhaust line is arranged upstream from the exhaust treatment device and is connected to a fuel supply and an air supply, the latter producing primary air and secondary air, and the device has a pre-oxidation zone a downstream post-oxidation zone, such that the pre-oxidation zone is connected to the fuel supply for its supply of liquid fuel and is connected to the air supply for its supply of primary air, while the post-oxidation zone is connected to the air supply for its supply of secondary air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.