Multiple capacitor means ignition system

In an ignition system for an internal combustion engine having an alternator having output windings producing an alternating output including a positive polarity portion and a negative polarity portion, a plurality of separate power capacitor means, a steering circuit including a full wave rectifying means connected between the output of the alternator and said plurality of power capacitator means and polarized to conduct rectified positive polarity portion of the windings to first selected power capacitor means and the rectified negative polarity portion to second selected power capacitor means, and circuit means for alternately discharging of said first and second capacitor means, a trigger capacitive means, rectifying circuit means connected to said alternator and to the trigger capacitive means to supply power to the capacitive means by both the positive and negative polarity portions of said alternating output, and discharge switch means controlled by said trigger capacitive means and connected in said circuit means for alternately discharging of said first and second power capacitor means.

In a capacitor discharge ignition system for a multiple cylinder internal combustion engine including a main alternator providing an alternating output and a separate trigger generator providing time spaced trigger pulses, said alternator and generator being coupled to the engine and driven in synchronism therewith and having a plurality of individual firing circuits connect to the igniting means and divided into first and second groups, comprising a first main firing capacitor, a second main firing capacitor, a diode network connecting said alternator to charge the first main firing capacitor during the first half-cycle of the alternator, a second diode network connecting the source to charge the second main firing capacitor and charging thereof during the second alternate charging half-cycle of the alternator, a first discharge line connecting said first main firing capacitor to the first group of said firing circuits, and a second output line connecting the second main firing capacitor to the second group of main firing circuits, and discharge means responsive to the trigger generator to alternately discharge said capacitors and to sequentially discharge said capacitors to different ones of said igniting means in the interconnected group.

A capacitor discharge ignition system, for a four-cylinder, two cycle internal combustion engine of an outboard motor, comprising a source alternator driven in synchronism with the engine and producing six output cycles per engine revolution, a first main firing capacitor means and a second main firing capacitor means, a full wave rectifying means having first circuit charging means connecting said first main firing capacitor means to said source for charging during a first polarity half-cycle of the alternator output, said rectifying means having a second circuit means connecting the second capacitor means to said source and providing charging thereof during the alternate polarity half-cycle of said source, said capacitor means being separately and sequentially charged to the same polarity and to a predetermined rectified potential, a capacitive trigger means for discharging of the capacitor means during a peak portion of every third charging half-cycle, and rectifying means connecting the trigger means to the power source for charging the capacitive trigger means from both polarities of the source.

A capacitor discharge ignition system, comprising an alternator power source, power capacitor means connected to be charged from said power source, a trigger capacitor means, a low impedance network connecting the trigger capacitor means to the power source, and a high impedance network connecting the trigger capacitor means to derive power from the charging circuit to the power capacitor means whereby said trigger capacitor means is provided with charging current through both of said networks.