Patent · US Active

Exhaust gas purification system

US7550125B2 · kind B2 · utility

2Cited by

8References

8Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Frank Duvinage · Kirchheim unter Teck, DE
Christian Goerigk · Hemmingen, DE
Arno Nolte · Stuttgart, DE
Markus Paule · Bad Marienberg, DE
Henning Sander · Ludwigsburg, DE

Key dates

Filing date	Apr 21, 2008
Grant date	Jun 23, 2009
Priority date	—
Expiry date	Apr 21, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An exhaust-gas purification unit for purifying the exhaust gas from an internal combustion engine which is preferably operated in lean-burn mode, in particular a diesel engine used in motor vehicles, has a particulate filter and a SCR catalytic converter arranged in the exhaust pipe in succession in the direction of flow, and a reducing-agent supply. Ammonia can be added to the exhaust gas from the internal combustion engine on the entry side of the SCR catalytic converter by the reducing-agent supply. The exhaust-gas purification unit includes a hydrogen-generating unit for enriching the exhaust gas from the internal combustion engine with the hydrogen which it generates.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.