Method to regenerate a particulate filter
Patents
Language: |
Английский |
Type: |
Invention |
Number |
EP 1744042 B1 |
Request number: |
05106289.1 |
Request date: |
Jul 11, 2005 |
patent.field.start_date: |
|
Registration date: |
Feb 22, 2012 |
patent.field.request_publication_date: |
Jan 17, 2007 |
Authors |
Carberry B.P.
,
Dubkov A.A.
,
Chigapov A.N.
,
Yacoub Y.M.
,
Harmsen J.
,
Maertens S.
|
Affiliations |
1 |
Ford Global Technologies, LLC Dearborn, MI 48126 (US)
|
|
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.