(19)
(11) EP 2 241 739 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.07.2018 Bulletin 2018/27

(43) Date of publication A2:
20.10.2010 Bulletin 2010/42

(21) Application number: 10159232.7

(22) Date of filing: 07.04.2010
(51) International Patent Classification (IPC): 
F02D 41/04(2006.01)
F02D 41/24(2006.01)
F02D 41/00(2006.01)
 F02D 41/14(2006.01)
F02N 19/00(2010.01)
(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 SM TR
Designated Extension States:
AL BA ME RS

(30) Priority: 07.04.2009 JP 2009092759

(71) Applicant: DENSO CORPORATION
Kariya-city, Aichi 448-8661 (JP)

(72) Inventors:
  • Utsunomiya, Yamato
    Kariya-city Aichi 448-8661 (JP)
  • Shibata, Misao
    Kariya-city Aichi 448-8661 (JP)
  • Kawahara, Kenji
    Kariya-city Aichi 448-8661 (JP)
  • Okamura, Koji
    Aichi-ken, Aichi 471-8571 (JP)
  • Yoshihara, Masatomo
    Aichi-ken, Aichi 471-8571 (JP)

(74) Representative: TBK 
Bavariaring 4-6
80336 München
80336 München (DE)

   


(54) Controller of a combustion engine for synchronizing the engine during the shutdown


(57) An ECU includes a backup RAM which stores a learning value of a loss torque characteristic of an engine. The learning value is updated based on the loss torque characteristic which is computed based on an actual engine rotation behavior. The ECU includes a first learning portion (S109) for updating the learning value based on the learning value stored in the memory (Tloss) and a presently computed loss torque characteristic (Tg), and a second learning portion (S112) for updating the learning value based on the presently computed loss torque characteristic (Tlossg) without using the learning value stored in the memory. A switching portion (S107) switches between the first learning portion and the second learning portion in order to update the learning value (Tloss).







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