Capacitor ignition system for internal-combustion engines

Claim 1

In a capacitor ignition system for an internal-combustion engine including a direct voltage converter, at least one storage capacitor connected to the output of said converter, control circuit means, coupled to said converter and to said storage capacitor, for regulating the operation of said converter to cause same to cyclically charge said capacitor, an ignition voltage firing circuit including an ignition coil and breaker points, and switch-through circuit means, connected between said storage capacitor and said ignition coil and responsive to the opening and closing of said breaker points, for discharging said storage capacitor in dependence on the firing frequency; the improvement wherein: there are first and second storage capacitors each connected to the ouptut of said converter and to the input of said switch-through circuit means with said first storage capacitor essentially for storing the firing energy required to ionize the ignition spark path of the spark plug connected to said ignition coil and said second storage capacitor essentially storing the firing energy required to assure a period of dwell for the ignition spark; said control circuit means includes a series RC timing circuit means for delaying the switching on of said converter after the discharge of said capacitors by said switch-through circuit means; and the circuit components of said converter and of said control circuit means for charging said capacitors are dimensioned so that the frequency of charging of said capacitors is independent of the ignition order frequency of the breaker points.