Global Patent Index - EP 1744042 A1

EP 1744042 A1 20070117 - Method to regenerate a particulate filter

Title (en)

Method to regenerate a particulate filter

Title (de)

Verfahren zur Regeneration eines Partikelfilters

Title (fr)

Méthode de régénération d'un filtre à particule

Publication

EP 1744042 A1 20070117 (EN)

Application

EP 05106289 A 20050711

Priority

EP 05106289 A 20050711

Abstract (en)

The Invention relates to a Method to regenerate a particulate filter, in particular a Diesel paticulate filter (DPF), whereby the particulate filter is arranged in an exhaust passage for receiving an exhaust gas from an internal combustion engine, in particular from a Diesel engine, whereby the particulate filter traps particulates contained in the exhaust gas, so that soot is collected inside the particulate filter. The method comprises the steps of (i) initiating an ignition of soot inside the particulate filter, and (ii) actuating a reduction of the exhaust gas mass flow through the filter, preferentially together with increasing concentration of oxygen in the exhaust gas, for example by means of using engine operating conditions with lighter load, whereby the steps (i) and (ii) can be repeated several times with a determined frequency so that a desired degree of filter regeneration is achieved.

IPC 8 full level

F01N 3/023 (2006.01); F02D 41/02 (2006.01); F02D 41/08 (2006.01)

CPC (source: EP)

F01N 3/023 (2013.01); F02D 41/029 (2013.01); F02D 41/08 (2013.01); F01N 2430/06 (2013.01); F02D 41/024 (2013.01); F02D 41/405 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

Designated extension state (EPC)

AL BA HR MK YU

DOCDB simple family (publication)

EP 1744042 A1 20070117; EP 1744042 A9 20070328; EP 1744042 B1 20120222

DOCDB simple family (application)

EP 05106289 A 20050711