(19)
(11) EP 2 634 408 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

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

(48) Corrigendum issued on:
16.10.2013 Bulletin 2013/42

(43) Date of publication:
04.09.2013 Bulletin 2013/36

(21) Application number: 10858906.0

(22) Date of filing: 26.10.2010
(51) International Patent Classification (IPC): 
F02D 41/04(2006.01)
F02D 41/14(2006.01)
F02D 45/00(2006.01)
 F02D 21/08(2006.01)
F02D 43/00(2006.01)
(86) International application number:
PCT/JP2010/068924
(87) International publication number:
WO 2012/056515 (03.05.2012 Gazette 2012/18)
(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

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

(72) Inventors:
  • ANDO, Ikuo
    Toyota-shi, Aichi-ken, 471-8571 (JP)
  • GENKO, Takeshi
    Toyota-shi, Aichi-ken, 471-8571 (JP)
  • MATSUMOTO, Yosuke
    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) An internal combustion engine executes EGR and controls the air-fuel ratio based on a detected oxygen concentration in the exhaust. An electronic control unit (20) controls the engine such that the detected value for the air-fuel ratio upstream from a front catalyst (14) provided in an exhaust pipe (3) reaches a value indicating a leaner air-fuel ratio when EGR is being executed than when not executed. Therefore, the controlled air-fuel ratio follows shifting of a window to the leaner side in response to execution of EGR, so that the air-fuel ratio is controlled more precisely in response to the execution of EGR.