(19)
(11) EP 2 116 708 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.03.2017 Bulletin 2017/13

(43) Date of publication A2:
11.11.2009 Bulletin 2009/46

(21) Application number: 09251255.7

(22) Date of filing: 05.05.2009
(51) International Patent Classification (IPC): 
F02D 41/14(2006.01)
F02D 41/00(2006.01)
 F02D 41/24(2006.01)
F02D 43/02(2006.01)
(84) Designated Contracting States:
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 SE SI SK TR
Designated Extension States:
AL BA RS

(30) Priority: 07.05.2008 JP 2008121400

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

(72) Inventor:
  • Minami, Masahiro
    Toyota-shi Aichi-ken 471-8571 (JP)

(74) Representative: Smith, Samuel Leonard 
J A Kemp 14 South Square
Gray's Inn London WC1R 5JJ
Gray's Inn London WC1R 5JJ (GB)

   


(54) Fuel injection amount control device and method


(57) In an ECU that corrects an injection amount of an injector (5) based on a learned value acquired by learning a secular change in the injection amount of the injector, a temporary learned value (F) of the injection amount of the injector is calculated based on a degradation trend map (L5) indicating the secular change in the injection amount of the injector estimated per vehicle travel distance, and a vehicle travel distance input from a terminal device (22). During the time period (T1) after the input of the vehicle travel distance until an acquisition of a new learned value is completed, the injection amount of the injector is corrected based on the temporary learned value of the injection amount of the injector.







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