Patent · US Expired

Device and method for determining a malfunction in a filter

US7081154B2 · kind B2 · utility

5Cited by

7References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Schulte · Paderborn, DE
Bernd Schumann · Rutesheim, DE

Key dates

Filing date	Jan 30, 2003
Grant date	Jul 25, 2006
Priority date	—
Expiry date	Sep 4, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S55/30
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A device for detecting a failure of a filter used to clean a gas stream, in particular an exhaust gas stream, of soot particulates, including a chamber which is insertable into the gas stream to be cleaned in addition to the filter and which is at least partially closed by a filter body and has at least one opening through which gas entering the chamber through the filter body can exit the chamber, at least one gas sensor for determining the concentration of at least one component of the gas to be cleaned being arranged in the chamber, and at least one second gas sensor for determining the concentration of the at least one component of the gas to be cleaned being arranged outside the chamber.

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