High energy spark ignition system, particularly for internal com

Details High energy spark ignition system, particularly for internal com High energy spark ignition system, particularly for internal com

1977-01-25

1978-04-11

Myhre, Charles J.

Internal-combustion engines

Igniters

Incandescent

123148DS, 123148DC, 123148CA, 1231465A, 315209T, F02P 100, F02P 300

Patent

active

040833470

ABSTRACT:
To provide a sharp voltage pulse to break down the spark gap of a spark plug, an ignition coil is constructed to have two secondary winding portions, one providing a high-voltage output and the other providing high energy level or current output. The high current output portion is connected through a diode to charge a capacitor which is further connected through an additional blocking diode to the spark gap, to which also the high voltage portion is connected, so that the spark gap will be supplied by a circuit common to both winding portions of the ignition coil, the high voltage pulse breaking down the spark gap and the high energy pulse, of lower voltage, however, providing spark energy for an extended period of time after initial breakdown of the gap. Preferably, the system is transistor-controlled, with the ignition instant being determined by a digital counter counting forward and reversely under control of a rotation-pulse transducer coupled to the crankshaft of the engine.

REFERENCES:
patent: 1547635 (1921-05-01), Akers
patent: 2852588 (1958-09-01), Hartman, Jr.
patent: 3963015 (1976-06-01), Haubner et al.
patent: 3993035 (1976-11-01), Gerry
patent: 4007724 (1977-02-01), Mura

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