Ignition sy tem for internal-combustion-micro-engines

Abstract

Abstract An ignition system for internal-combustion micro-engines comprising an ignition magneto provided to energize a spark plug by means of an electric current fed through a contact breaker controlled by a cam and designed to become operative in conditions of maximum current, characterized by the fact that said magneto is so shaped and dimensioned as to be comprised within the engine clearance gauge, the inductor of said magneto being mounted into a housing defined between the blades of the engine fan which is fixed on the driving shaft, said inductor having its pole shoes set at a right angle to the rotation axis of the driving shaft, while the armature comprises a three leg core, where said legs are parallel to the said rotation axis and are simmetric with respect of a plane passing through said rotation axis, said armature core being constituted of a laminated iron structure, wherein the central leg which supports the primary and secondary winding, has a thickness smaller than that of the side legs which are identic, while the outer surfaces of said three legs are coplanar, the inductor being constituted of a two leg core, wherein the transverse centre plane passes through the axis or the fan rotor supporting said inductor, while the thickness of the inductor core legs is greater than that of the core legs of the armature so as to obtain towards the rotation axis of the ignition system a zone of electromagnetic leakage in order to produce a flattening of the peaks of the current curve.

Inventors

• 👤 G Bonvicini

Bibliographic Details