(19)
(11) EP 1 199 205 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION

(48) Corrigendum issued on:
21.08.2002 Bulletin 2002/34

(43) Date of publication:
24.04.2002 Bulletin 2002/17

(21) Application number: 01122466.4

(22) Date of filing: 20.09.2001
(51) International Patent Classification (IPC)7B60K 6/04, B60L 11/12, B60K 41/00, B60K 41/14
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 22.09.2000 JP 2000289355
20.12.2000 JP 2000387832

(71) Applicant: NISSAN MOTOR CO., LTD.
Yokohama-shi Kanagawa-ken (JP)

(72) Inventors:
  • Yamaguchi, Masashi
    Yokosuka-shi, Kanagawa-ken (JP)
  • Muramoto, Itsuro
    Yokohama-shi, Kanagawa-ken (JP)
  • Takahashi, Nobutaka
    Yokohama-shi, Kanagawa-ken (JP)

(74) Representative: Weber, Joachim, Dr. 
Hoefer, Schmitz, Weber & Partner Patentanwälte Gabriel-Max-Strasse 29
81545 München
81545 München (DE)

   


(54) Control system for hybrid vehicle


(57) A control system for a hybrid vehicle has a consumed electric power calculator (20), which calculates electric power consumption, and a battery state calculator (21), which calculates battery state SOC of a battery (5). Based on this battery state, a physical quantity per effective electric power calculator (25) calculates a physical quantity per effective power when electric power equal to or greater than consumed electric power is generated for various electric power consumption and electric power generation, and a threshold value calculator (22) obtains a threshold value having the same unit as that of the physical quantity per effective power using predetermined calculation for selecting operating modes of a generator and the battery. An operating mode selector (23) selects operating modes for an engine (1) and the battery (5) based on comparison between the above threshold value and the physical quantity per effective power corresponding to the consumed electric power, and a target generated electric power calculator (24) calculates target electric power generation. An electric power distribution controller (6) controls the engine (1) and the motor (3).