Patent · US Expired

Method and apparatus for metering a reducing agent for removing nitrogen oxides from exhaust gases

US6912846B2 · kind B2 · utility

33Cited by

9References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Sven Huber · Freilassing, DE
Hanspeter Mayer · Adnet, AT
Gerhard Mueller · Freilassing, DE
Michael Offenhuber · Adnet, AT

Key dates

Filing date	Sep 20, 2001
Grant date	Jul 5, 2005
Priority date	—
Expiry date	Dec 14, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7761
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method and an apparatus for metering a reducing agent in which the reducing agent is delivered, via a line and a final control element that regulates the metering, in particular a metering valve, to a catalytic converter assembly for removing nitrogen oxides from the exhaust gases, in particular of a Diesel engine; a pressure drop in the line dictated especially by gas inclusions is detected, and the line is ventilated via the final control element.

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