초록 ▼

Voltage halfwaves generated by a magneto in one polarity are utilized for powering and timing ignition of an internal combustion engine, and voltage halfwaves of the opposite polarity, taken from the circuit of the primary winding, are utilized both to feed a regulated d.c. voltage source for a timi

Voltage halfwaves generated by a magneto in one polarity are utilized for powering and timing ignition of an internal combustion engine, and voltage halfwaves of the opposite polarity, taken from the circuit of the primary winding, are utilized both to feed a regulated d.c. voltage source for a timing circuit and to provide a recurring trigger voltage for a monostable circuit that keeps the ignition control circuit operative only so long as the speed of the engine does not exceed a predetermined limit. The monostable circuit is constituted by appropriate connecting up of an available timer integrated circuit unit.

대표청구항 ▼

Magneto powered ignition system for an internal combustion engine incorporating engine-speed limiting of the intermittent ignition-suppression type, said system comprising primary and secondary ignition windings, a contactless electrically controlled switch means with a control circuit responsive to

Magneto powered ignition system for an internal combustion engine incorporating engine-speed limiting of the intermittent ignition-suppression type, said system comprising primary and secondary ignition windings, a contactless electrically controlled switch means with a control circuit responsive to ignition timing signals in circuit with said primary winding, means including an engine driven magneto generator for providing power to said ignition windings and engine-driven ignition timing signal generator means, a monostable multivibrator stage for enabling operation of the ignition system so long as the engine speed does not exceed a predetermined limit by providing an input to the control circuit of said switch means, and further comprising the combination of: means, including a magneto generator winding (13) serving in circuit as said primary ignition winding and also as a winding of said engine driven generator means for ignition energization from generated current and for providing both the signal voltage (Up) for triggering said monostable multivibrator stage and the electrical energy supply for the control circuit (20) of said switch means (17), and means for applying, to the input of said monostable multivibrator, voltage half-waves of said generator winding (13) circuit (16) which are of a polarity opposite to that of voltage half-waves in said generator winding (13) circuit (16) utilized for ignition power and timing.