Electrical to Thermal Conversion in Spark Ignition 670114

This paper emphasizes the fundamental properties associated with spark ignition, as they affect system design, whether conventional or capacitor discharge techniques are employed. The basic parts of any ignition system are: energy source, energy storage system, mechanism for delivering the stored energy to the spark plug in proper time sequence, and a spark plug which converts electrical energy to the thermal energy required for ignition. The energy storage system and spark plug act as the source and the load, respectively, to supply ignition requirements. The significance of voltage rise time, spark duration, and peak power is discussed as they are derived from the load-source relationships.


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