(19)
(11) EP 0 811 763 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.12.1999 Bulletin 1999/50

(43) Date of publication A2:
10.12.1997 Bulletin 1997/50

(21) Application number: 97630031.9

(22) Date of filing: 03.06.1997
(51) International Patent Classification (IPC)6: F02P 1/08, F02P 15/12
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 05.06.1996 JP 165303/96

(71) Applicant: Mitsuba Corporation
Kiryu-shi, Gunma-ken (JP)

(72) Inventors:
  • Nozue, Yutaka
    Nitta-gun, Gunma-ken (JP)
  • Yanase, Atsushi
    Sawa-gun, Gunma-ken (JP)

(74) Representative: Waxweiler, Jean et al
Dennemeyer & Associates S.A., P.O. Box 1502
1015 Luxembourg
1015 Luxembourg (LU)

   


(54) Ignition system with generator voltage distribution control


(57) In an ignition system for an internal combustion engine of a motorcycle comprising an electric generator; an ignition circuit connected to the electric generator for producing a spark voltage for a spark plug; a battery having an end connected to the electric generator via switching means, and another end connected to the ground; and an electrical load connected in parallel with the battery, the switching means includes a voltage detector for detecting an output voltage of the electric generator, and a switching element for disconnecting the battery and the electrical load from the electric generator when the output voltage detected by the voltage detector is below a prescribed value. Because the electrical load and the battery are disconnected from the generator when the output voltage of the generator is below a prescribed value, the output voltage can go up to the prescribed value or higher which is sufficient for the ignition circuit to properly operate so as to produce a spark voltage for a spark plug, with the result that the internal combustion engine can be easily started by operating a kickstarter of the motorcycle.






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