(19)
(11) EP 2 685 072 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:
12.03.2014 Bulletin 2014/11

(43) Date of publication:
15.01.2014 Bulletin 2014/03

(21) Application number: 13175607.4

(22) Date of filing: 08.07.2013
(51) International Patent Classification (IPC): 
F02D 41/02(2006.01)
F02D 41/22(2006.01)
 F01N 3/20(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: 12.07.2012 JP 2012156719

(71) Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Toyota-shi, Aichi-ken, 471-8571 (JP)

(72) Inventor:
  • Ota, Hirohiko
    Toyota-shi, Aichi-ken, 471-8571 (JP)

(74) Representative: Kuhnen & Wacker 
Patent- und Rechtsanwaltsbüro Prinz-Ludwig-Straße 40A
85354 Freising
85354 Freising (DE)

   


(54) Control device for internal combustion engine


(57) When urea aqueous solution is frozen (YES in S104), a process (S108 to S114) of decreasing an exhaust gas temperature in an exhaust passage (26) as compared to the exhaust gas temperature when urea aqueous solution is not frozen (NO in S104, S120, S122) is executed. An exhaust gas temperature decreasing process is executed by decreasing a regeneration temperature in a PM regeneration process at a DPF catalyst (32). Therefore, it is possible to suppress a rise in the temperature of exhaust gas due to the PM regeneration process, so it is possible to suppress an overheat of an urea aqueous solution addition valve (230) that cannot be cooled due to freezing of urea aqueous solution.