(19)
(11) EP 2 354 504 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.09.2014 Bulletin 2014/36

(43) Date of publication A2:
10.08.2011 Bulletin 2011/32

(21) Application number: 11150699.4

(22) Date of filing: 12.01.2011
(51) International Patent Classification (IPC): 
F02D 41/02(2006.01)
F01N 3/10(2006.01)
 F01N 3/08(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 09.02.2010 JP 2010026667

(71) Applicant: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
Tokyo 108-8410 (JP)

(72) Inventors:
  • Kawashima, Kazuhito
    Tokyo Tokyo (JP)
  • Tashiro, Keisuke
    Tokyo Tokyo (JP)
  • Tsuda, Masahiro
    Tokyo Tokyo (JP)

(74) Representative: Vossius & Partner 
Siebertstrasse 4
81675 München
81675 München (DE)

   


(54) Exhaust emission control device for internal combustion engine


(57) An occluding member is provided in an exhaust system of an internal combustion system, to thus trap and desorb a plurality of types of hydrocarbons having different boiling points. First calculation means estimates a distribution of presence of the hydrocarbons to be trapped by the occluding member for each type and calculates an occlusion quantity of the occluding member 2 from the quantity of trapped hydrocarbons for each type. Further, there is performed control for purifying the hydrocarbons occluded in the occluding member according to the occlusion quantity calculated by the first calculation means.







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