Patent · US Active

Dosing system for a liquid reducing agent

US9562455B2 · kind B2 · utility

1Cited by

13References

19Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ewgenij Landes · Waiblingen, DE
Peter Boehland · Erbach, DE

Key dates

Filing date	Jul 9, 2012
Grant date	Feb 7, 2017
Priority date	—
Expiry date	Dec 20, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B23/10
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

Proposed is a dosing module for injecting liquid urea-water solution into the exhaust tract of an internal combustion engine, which dosing module is composed of two pumps, specifically a delivery pump (5) and an aeration pump (15). This permits firstly the injection of urea-water solutions and secondly safe and reliable ventilation of the system when the internal combustion engine is to be shut down.

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