Patent · US Active

SCR exhaust gas aftertreatment device

US8938949B2 · kind B2 · utility

5Cited by

83References

23Claims

0Family size

Assignee

Cummins Inc. · US

Inventors

Alexandre Branco · Schweinfurt, DE
Heico Stegmann · Würzburg, DE
Friedrich Zapf · Karlstadt, DE

Key dates

Filing date	Jul 30, 2010
Grant date	Jan 27, 2015
Priority date	—
Expiry date	Feb 5, 2032

Classification

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

Abstract

The invention relates to an SCR exhaust gas aftertreatment device, particularly for diesel motor internal combustion engines having a very large exhaust gas volume and/or divided exhaust gas trains. In order to be able to manufacture this SCR exhaust gas aftertreatment device in a cost-efficient manner, also for a high mixing degree of exhaust gas and AUS, it is proposed that a plurality of metering units (D1, D2, Dn) is provided, each of which has an atomizing nozzle, which nozzle-injects the aqueous urea solution into the exhaust gas train. In this case, the pressure existing in a common line for all metering units (D1, D2, Dn) can be determined by means of a pressure sensor.

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