Patent · US Active

Procedure to diagnose a particle filter and device to implement the procedure

US8695331B2 · kind B2 · utility

1Cited by

3References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Torsten Handler · Stuttgart, DE
Michael Kolitsch · Rutesheim, DE
Tobias Pfister · Stuttgart, DE

Key dates

Filing date	May 3, 2007
Grant date	Apr 15, 2014
Priority date	—
Expiry date	Sep 1, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A procedure to diagnose a particle filter disposed in an exhaust gas area of an internal combustion engine as well as a device to implement the procedure is proposed. Provision is made to ascertain the degree of efficiency of the particle filter on the basis of the upstream particle flow occurring upstream in front of the particle filter and on the basis of the downstream particle flow occurring downstream behind the particle filter. The ascertainment of the degree of efficiency of the particle filter allows for an On-Board-Diagnosis of the particle filter, with which compliance with specified exhaust gas threshold values can be assured.

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