Apparatus for increasing the ignition voltage of internal combus

Details Apparatus for increasing the ignition voltage of internal combus Apparatus for increasing the ignition voltage of internal combus

1975-06-23

1977-04-12

Myhre, Charles J.

Internal-combustion engines

Igniters

Incandescent

315209CD, 315209M, 123148E, F02P 100, H05B 3702

Patent

active

040168492

ABSTRACT:
The present circuit arrangement for generating a high voltage for the spark plugs of an internal combustion engine, includes an ignition coil having a secondary winding coupled to the spark plugs. One end of the primary winding of the coil is connected to one terminal of a battery by a conventional contact breaker. A capacitor and first switch are connected in that order between the other end of the primary winding and the other terminal of the battery. A diode is connected in parallel with the capacitor and first switch. A second switch is connected between the first terminal of the battery and the junction of the capacitor and the second switch. The first switch opens and closes in synchronism with the contact breaker. The second switch is open when the contact breaker is closed, and vice versa. The circuit functions as a voltage doubler whereby the voltage applied to the primary winding is doubled as compared to the battery voltage.

REFERENCES:
patent: 2905831 (1959-09-01), Scott
patent: 2980093 (1961-04-01), Short
patent: 3220396 (1965-11-01), Heidner et al.
patent: 3260891 (1966-07-01), Judson
patent: 3645246 (1972-02-01), Campell et al.
patent: 3673998 (1972-07-01), Phillips
patent: 3753428 (1973-08-01), Phillips
patent: 3901205 (1975-08-01), Brongsberg

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