(19)
(11) EP 2 383 445 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
11.01.2012 Bulletin 2012/02

(43) Date of publication:
02.11.2011 Bulletin 2011/44

(21) Application number: 11174109.6

(22) Date of filing: 02.02.2005
(51) International Patent Classification (IPC): 
F01N 3/24(2006.01)
F01N 3/08(2006.01)
B01D 53/90(2006.01)
 B01D 53/94(2006.01)
F01N 3/28(2006.01)
F01N 3/00(2006.01)
(84) Designated Contracting States:
DE NL SE

(30) Priority: 02.02.2004 JP 2004025786
02.02.2004 JP 2004025752
09.03.2004 JP 2004065476

(62) Application number of the earlier application in accordance with Art. 76 EPC:
05709651.3 / 1712755

(71) Applicant: Nissan Diesel Motor Co., Ltd.
Ageo-shi Saitama 362-8523 (JP)

(72) Inventors:
  • Hirata, Kiminobu
    Saitama, 362-8523 (JP)
  • Masaki, Nobuhiko
    Saitama, 362-8523 (JP)
  • Miyata, Tatsuji
    Saitama, 362-8523 (JP)

(74) Representative: Evans, Marc Nigel 
Page White & Farrer Bedford House John Street
London, WC1N 2BF
London, WC1N 2BF (GB)

 
Remarks:
This application was filed on 15-07-2011 as a divisional application to the application mentioned under INID code 62.
 


(54) Exhaust emission purifying apparatus for engine


(57) An exhaust emission purifying apparatus for an engine comprising:
a reduction catalytic converter (5) disposed in an exhaust system of the engine, for reductively purifying nitrogen oxides in exhaust emission with a reducing agent;
an injection nozzle (7) arranged for injection-supplying the reducing agent to an upstream side of the exhaust emission flow with respect to the reduction catalytic converter within an exhaust passage (3) of the exhaust system; and
a reducing agent supply device (8) arranged for supplying the reducing agent to the injection nozzle (7),
wherein the apparatus further comprises blocking means which is detachably disposed for blocking an exhaust passage portion between a portion of the exhaust passage (24), to which the reducing agent injection-supplied from said injection nozzle (7) is attached, and another portion of the exhaust passage (25), on which at least said reduction catalytic converter (5) is disposed, and a feed port (21) for feeding washing water and a drain port (22) for drainage of the washing water are provided on a wall portion of the exhaust passage at the portion to which said reducing agent is attached.