| 摘要 |
Ignition systems of the kind used to ignite a difficult-to-ignite fuel oil by using energy stored in a capacitor at a breakdown for creating an ignition arc at the electrodes of a spark plug, designed to preclude interference of contaminants with conduction of an ignition arc across an established current path between the electrodes of the spark plug. An air gap and a sparkplug are connected in series, wherein the sparkplug produces an ignition arc in a fuel to be ignited. A first high voltage power supply develops a first direct current voltage across the capacitor, which is supplied as a voltage across the air gap and the spark plug. A second high voltage power supply supplies a second pulsed voltage across the air gap and the spark plug, wherein the second pulsed voltage is substantially higher than the first direct current voltage, and the second pulsed voltage jumps the gap of the air gap and thus initiates an ignition arc, and the first direct current voltage is current limiting thereby allowing the capacitor voltage to approach zero, and thus allowing the air gap to cease conducting, thereby allowing the cycle to repeat itself. A diode is positioned between the second pulsed voltage and the capacitor of the first high voltage power supply to isolate the capacitor from the second pulsed voltage.
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