Patent · US Active

Exhaust gas purification unit with reducing agent supply

US7361320B2 · kind B2 · utility

1Cited by

8References

9Claims

0Family size

Assignee

Daimlerchrysler AG · US

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	Aug 13, 2007
Grant date	Apr 22, 2008
Priority date	—
Expiry date	Aug 13, 2027

Classification

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

Abstract

The invention proposes 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, in which a particulate filter and a SCR catalytic converter are arranged in the exhaust pipe in succession in the direction of flow, and having a reducing-agent supply, it being possible for ammonia to 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. According to the invention, 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. Use in motor vehicles.

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