(19)
(11) EP 2 228 527 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.11.2012 Bulletin 2012/48

(43) Date of publication A2:
15.09.2010 Bulletin 2010/37

(21) Application number: 10156211.4

(22) Date of filing: 11.03.2010
(51) International Patent Classification (IPC): 
F02D 41/04(2006.01)
F02N 19/00(2010.01)
 B60W 10/06(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 SM TR

(30) Priority: 12.03.2009 JP 2009060070

(71) Applicant: Toyota Jidosha Kabushiki Kaisha
Toyota-shi, Aichi 471-8571 (JP)

(72) Inventors:
  • Nakamura, Yoshifumi
    Toyota-shi Aichi 471-8571 (JP)
  • Yoshihara, Masatomi
    Toyota-shi Aichi 471-8571 (JP)
  • Uchida, Akito
    Toyota-shi Aichi 471-8571 (JP)
  • Okamura, Kouji
    Toyota-shi Aichi 471-8571 (JP)
  • Hatta, Yuuji
    Toyota-shi Aichi 471-8571 (JP)
  • Shibata, Misao
    Kariya-City Aichi 448-8661 (JP)

(74) Representative: Winter, Brandl, Fürniss, Hübner, Röss, Kaiser, Polte - Partnerschaft 
Bavariaring 10
80336 München
80336 München (DE)

   


(54) Controller for internal combustion engine


(57) When the internal combustion engine (11) is stopped, the ECU (41) controls the load torque of the alternator (34) so that the engine rotational speed (NE) coincides with the target engine rotational speed. By so doing, the ECU (41) executes stop position control in which the internal combustion engine (11) is stopped so that the crank angle θ at the time of engine stop stops within the target crank angle range. While the stop position control is being executed, the ECU (41) calculates a required load torque necessary to make the engine rotational speed (NE) coincide with the target engine rotational speed (NEtg), and then compares the required load torque with the maximum load torque of the alternator (34) at the engine rotational speed (NE) at that time. Then, when the required load torque is larger than the maximum load torque, the ECU (41) ends the stop position control.







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