Magneto-dynamo-operated ingition device for multi-cylinder engines

Claim 2

In a magneto-dynamo-operated ignition device for a multicylinder engine, in which a magneto dynamo is employed as a power supply; a plurality of discharge capacitors charged thereby equal to at least the number of cylinders, secondary windings of a plurality of ignition coils equal to at least one half the number of cylinders producing high ignition voltages by discharging said capacitors associated with each coil; comprising: the magneto dynamo having a 2-pole rotor and a stator with poles of even number determined in accordance with the number of cylinders, and armature coils wound on every other stator pole, a plurality of discharging circuits of said discharge capacitors being selectively energized through a common rectifier with a control electrode which is controlled by an ignition timing signal from the ignition timing dynamo produced for each cylinder as said rotor engages magnetically with each armature coil.

Claim 3

A magneto-dynamo-operated ignition device for multi-cylinder engine comprising: a magneto dynamo having a plurality of charging coils adapted to produce a plurality of output voltages successively for every one rotation thereof; a plurality of charging circuits connected to said plurality of charging coils respectively, each of said charging circuits including, a capacitor for storing electric charges supplied from the corresponding one of said output voltages of said charging coils; discharging means comprising a plurality of discharging circuits corresponding to said plurality of charging circuits respectively; a switching means connected commonly to said plurality of discharging circuits, each of said discharging circuits including, ignition coil means for delivering an ignition voltage to a plug connected thereto and being connected to said capacitor of the corresponding charging circuit for discharging the stored electric charges of said capacitor through and means for closing said switch element periodically in synchronism with the rotation of the engine.

Claim 4

A magneto-dynamo-operated ignition device for multi-cylinder engine comprising: a magneto dynamo having a plurality of charging coils adapted to produce a plurality of output voltages successively for every one rotation thereof; a plurality of charging circuits connected to said plurality of charging coils respectively, each of said charging circuits including, a capacitor for storing electric charges supplied from the corresponding one of said output voltages of said charging coils; discharging means comprising a plurality of discharging circuits corresponding to said plurality of charging circuits respectively; a switching means connected commonly to said plurality of discharging circuits, each of said discharging circuits including, ignition coil means for delivering an ignition voltage to a plug connected thereto and being connected to said capacitor of the corresponding charging circuit for discharging the stored electric charges of said capacitor through and means for closing said switch element periodically in synchronism with the rotation of the engine.

Claim 5

The magneto-dynamo-operated ignition device of claim 2 wherein said magneto dynamo comprises: a stator having a plurality of substantially equally spaced poles whose number is two times a number of cylinders of the engine and armature coils wound on alternate ones of said poles, and a rotor having two poles disposed thereon with a space substantially equal to that between two adjacent ones of said poles of said stator, said armature coils producing output voltages successively in accordance with the rotation of said rotor.

Claim 6

The magneto-dynamo-operated ignition device of claim 2 wherein said plurality of charging circuits correspond to said armature coils, respectively, each of said charging circuits further including a first diode connected through said capacitor associated therewith to the corresponding one of said armature coils for charging said capacitor with electric charges, when said corresponding armature coil produces said output voltage.

Claim 7

The magneto-dynamo-operated ignition device of claim 2 wherein said discharging means further includes: a second diode and said ignition coil means including primary and secondary coils, said primary coil being connected through said second diode to said capacitor of the corresponding charging circuit, for discharging said Electric charges charged in said capacitor therethrough; thereby producing a high ignition voltage at said secondary coil when said switching means is closed, said secondary coil being connected to two plugs mounted on a

Claim 8

The magneto-dynamo-operated ignition device of claim 2 wherein said means for closing said switch element comprises: an ignition timing generator for producing signals successively; each at a predetermined time relating to the desired ignition timing of said cylinders after said capacity of any one of said charging circuits has been charged, said signals being applied to said switching means thereby closing the same periodically.

Claim 9

The magneto-dynamo-operated ignition device of claim 2 wherein said engine has an even number of cylinders and said magneto dynamo comprises: a stator having a plurality of substantially equally spaced poles whose number is equal to the even number of said cylinders, armature coils wound on alternate ones of said poles, and a rotor having two poles disposed thereon with a space substantially equal to that between two adjacent ones of said poles of said stator, said armature coils producing output voltages successively in accordance with the rotation of said rotor.