Internal-combustion engines – Igniters – Incandescent
Patent
1978-05-03
1980-05-06
Myhre, Charles J.
Internal-combustion engines
Igniters
Incandescent
123148E, 315209T, 315209SC, 315218, F02P 108
Patent
active
042011710
ABSTRACT:
An ignition system for a multicylinder engine comprising a magneto having an igniting exciter coil to induce an AC voltage in synchronism with rotation of the engine; ignition coils having secondary coil portions respectively connected to ignition plugs for cylinders of the engine, to supply a high voltage to the respective ignition plugs; and a primary current controlling semiconductor switch connected to the igniting exciter coil in parallel therewith to be turned on in advance of respective igniting positions of the cylinders so that a current flows through the semiconductor switch. The ignition system further comprises a signal generator driven by the engine and having signal coils to generate timing signals at the respective igniting positions of the cylinders; and primary current conducting semiconductor switches provided between the respective primary coil portions of the ignition coils and the igniting exciter coil to be turned on by the respective timing signals from the signal generator to abruptly pass the primary current through the respective primary coil portions of the ignition coils whereby a high voltage is established across the secondary coil portions of the ignition coils to spark the ignition plugs.
REFERENCES:
patent: 3612023 (1971-10-01), Sohner et al.
patent: 3824976 (1974-07-01), Katsumata et al.
patent: 3878824 (1975-04-01), Haubner et al.
patent: 4016433 (1977-04-01), Brooks
patent: 4099509 (1978-07-01), Hashimoto
patent: 4119076 (1978-10-01), Sato
Boyama Kimihiro
Nanjo Hirotoshi
Dolinar Andrew M.
Kokusan Denki Co. Ltd.
Myhre Charles J.
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