Patent · US Expired

Device for the post-treatment of exhaust gases of an internal combustion engine

US7100366B2 · kind B2 · utility

36Cited by

4References

18Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Bernhard Hager · Valderrobres, ES
Sven Huber · Freilassing, DE
Gerhard Mueller · Freilassing, DE
Michael Offenhuber · Adnet, AT

Key dates

Filing date	Mar 27, 2002
Grant date	Sep 5, 2006
Priority date	—
Expiry date	Mar 27, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7889
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An apparatus for posttreatment of exhaust gases of an internal combustion engine, using a reducing agent to be introduced into the exhaust gases, in particular a urea or a urea-and-water solution, having an improved mixing chamber into which stored reducing agent, via a reducing agent line, and compressed air via a compressed air line can be introduced to create a reducing agent-air mixture, and means for preventing a reverse flow of reducing agent or reducing agent-air mixture from the mixing chamber into the compressed air line are provided which have a spring-loaded sealing hose. This arrangement assures secure sealing off of an attachable compressed air system from the corrosive reducing agent.

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