Patent · US Active

Method for operating a metering device, metering device and motor vehicle

US9599003B2 · kind B2 · utility

2Cited by

4References

16Claims

0Family size

Assignee

EMITEC Gesellschaft fuer Emissionstechnologie mbH · DE

Inventors

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

Key dates

Filing date	Feb 17, 2015
Grant date	Mar 21, 2017
Priority date	—
Expiry date	Feb 17, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A method for operating a metering device for a liquid additive includes providing the metering device with at least one pump having a movable pump element carrying out pumping movements to pump the liquid additive and at least one injector connected through a pressure line to a pressure side of the pump and being opened to meter the liquid additive. The injector is opened in a step a). In a step b), the liquid additive is then metered and the pumping movements are counted during metering. In a step c), the injector is then closed. In a step d), the number of pumping movements ascertained in step b) are then compared with the opening time of the injector between step a) and step c) in order to carry out a diagnosis of the operation of the metering device. A metering device and a motor vehicle are also provided.

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