| (19) |
 |
|
(11) |
EP 1 251 249 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
19.11.2003 Bulletin 2003/47 |
| (43) |
Date of publication A2: |
|
23.10.2002 Bulletin 2002/43 |
| (22) |
Date of filing: 18.04.2002 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
18.04.2001 EP 01109571
|
| (71) |
Applicant: OMG AG & Co. KG |
|
63457 Hanau (DE) |
|
| (72) |
Inventors: |
|
- Pfeifer, Marcus, Dr.
42719 Solingen (DE)
- Krieg, Harald
60435 Frankfurt (DE)
- van Setten, Barry, Dr.
63517 Rodenbach (DE)
- Staab, Roger
63579 Freigericht (DE)
- Gieshoff, Jürgen, Dr.
63599 Biebergemünd (DE)
- Lox, Egbert, Dr.
36355 Grebenhain - Hochwaldhausen (DE)
- Kreuzer, Thomas, Dr.
61184 Karben (DE)
|
| (74) |
Representative: VOSSIUS & PARTNER |
|
Siebertstrasse 4
81675 München
81675 München (DE) |
|
| |
|
| (54) |
A process and device for removing soot particles from the exhaust gas from a diesel
engine |
(57) The invention provides a process for removing soot particles from exhaust gas from
produced by a diesel engine. The process uses a particle filter (1) that collects
soot particles with the aid of nitrogen dioxide which is generated by catalytic oxidation
of nitrogen monoxide contained in the exhaust gas. The process is characterized in
that the particle filter (1) is a deep-bed particle filter, having a filtration efficiency
for the soot particles. The particle filter is coated with a catalytic coating (2)
for oxidizing nitrogen monoxide to nitrogen dioxide and the exhaust gas leaving the
particle filter subsequently filtered through a particle filter serving as a soot
barrier (3). The filter can have a filtration efficiency of over 95 %.