Patent · US Active

Method for metering a reagent for the emission control of internal combustion engines and device for executing the method

US8347603B2 · kind B2 · utility

0Cited by

13References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Stefan Wickert · Albershausen, DE
Torsten Handler · Stuttgart, DE
Michael Gerlach · Waiblingen, DE

Key dates

Filing date	May 2, 2005
Grant date	Jan 8, 2013
Priority date	—
Expiry date	Mar 19, 2027

Classification

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

Abstract

A method for metering a reagent which an emission control device situated in the exhaust duct of an internal combustion engine requires for removing at least one exhaust gas component from the exhaust gas and a device for executing the method are described. The fluid level of the reagent stored in a reagent tank is measured. The measured change in the fluid level is compared to at least one measure for the change in the fluid level calculated as a function of consumption. An error signal is output when the comparison result exceeds a predefined threshold value. This approach enables reliable information to be provided about the fluid level of the reagent in the reagent tank.

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