Patent · US Active

Metering system and method for operating a metering system

US7654080B2 · kind B2 · utility

20Cited by

5References

18Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolfgang Ripper · Stuttgart, DE
Markus Buerglin · Ditzingen, DE
Thorsten Mayer · Worms, DE
Michael Offenhuber · Adnet, AT
Dirk Heilig · Ditzingen, DE

Key dates

Filing date	Sep 16, 2005
Grant date	Feb 2, 2010
Priority date	—
Expiry date	Jun 10, 2026

Classification

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

Abstract

The invention relates to a dosing system comprising a dosing means for metering a liquid, especially an aqueous urea solution used for the after treatment of exhaust gases generated by combustion engines. The liquid can be conveyed from a reservoir into an exhaust manifold through the dosing means in a normally operating conveying device. According to the invention, at least one area that is located between a dosing point and the reservoir and is impinged upon by the liquid can be emptied counter to a normal transport direction of the liquid.

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