Patent · US Active

Device for metering a liquid reducing agent

US9494069B2 · kind B2 · utility

3Cited by

3References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Rainer Haeberer · Bretten, DE
Matthias Horn · Tettnang, DE
Michael Krause · Eßlingen, DE

Key dates

Filing date	Nov 15, 2007
Grant date	Nov 15, 2016
Priority date	—
Expiry date	Oct 31, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/8342
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

The invention relates to a device for metering a liquid reducing agent into an exhaust gas system. The device can be used, in particular, for reducing nitrogen oxides in an exhaust gas. The device includes at least one working container for holding a working quantity of the liquid reducing agent. In addition, the device is provided with at least one metering module, at least one delivery line, and at least one delivery pump. The device also has at least one storage container for holding a storage quantity of the liquid reducing age, preferably a storage quantity that exceeds the working quantity. The storage container is connected to the working container via at least one storage line. The storage line has at least one storage pump disposed therein for circulating liquid reducing agent from the storage container to the working container.

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