(19)
(11) EP 0 860 600 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.03.2000 Bulletin 2000/13

(43) Date of publication A2:
26.08.1998 Bulletin 1998/35

(21) Application number: 98102890.5

(22) Date of filing: 19.02.1998
(51) International Patent Classification (IPC)7: F02D 41/38, F02D 41/20
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 21.02.1997 JP 3797997
26.02.1997 JP 4241197

(71) Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Aichi (JP)

(72) Inventors:
  • Murakami, Motoichi
    Toyota-shi, Aichi (JP)
  • Oda, Tomihisa
    Toyota-shi, Aichi (JP)
  • Hokazono, Yuuichi
    Toyota-shi, Aichi (JP)

(74) Representative: Winter, Brandl, Fürniss, Hübner, Röss, Kaiser, Polte Partnerschaft 
Patent- und Rechtsanwaltskanzlei Alois-Steinecker-Strasse 22
85354 Freising
85354 Freising (DE)

   


(54) A fuel injection system for an internal combustion engine


(57) Fuel injection valves (1) of the engine (10) are connected to the common rail (3). The high pressure fuel pump (5) supplies pressurized fuel to the common rail (3). The electronic control unit (ECU) (20) determines whether one or more of the fuel injection valves has failed. When one or more of the fuel injection valves is determined as having failed, the ECU stops the high pressure fuel pump and injects fuel from all of the fuel injection valves including the fuel injection valve determined as being failed. Since the fuel remained in the common rail is expelled from the common rail through, not only the failed fuel injection valve, but also other fuel injection valves, the common rail is depressurized in a short time and, thereby, the abnormal fuel injection from the failed fuel injection valve stops in a short time.






Search report