Patent · US Active

Method for operating a delivery device for a reducing agent and delivery device for a reducing agent

US9771849B2 · kind B2 · utility

1Cited by

6References

9Claims

0Family size

Assignee

EMITEC Gesellschaft fuer Emissionstechnologie mbH · DE

Inventors

Jan Hodgson · Troisdorf, DE
Peter Bauer · Siegburg, DE

Key dates

Filing date	Jul 9, 2012
Grant date	Sep 26, 2017
Priority date	—
Expiry date	Oct 3, 2032

Classification

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

Abstract

A method for operating a delivery device for delivering a reducing agent from a reducing agent tank into an exhaust treatment device of an internal combustion engine of a motor vehicle, includes at least intermittently carrying out a ventilation process of the delivery device during operation of the internal combustion engine. A registration of a ventilation process first occurs. A timing unit having a preset time interval and/or a mass-flow summing unit having a preset total mass flow is then actuated. When the preset time interval and/or the preset total mass flow is reached, the ventilation process is then carried out. In particular, monitoring the delivery device by a pressure sensor can thus be omitted. A delivery device for delivering a reducing agent is also provided.

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