High efficiency electrical alternator system

An engine alternator and charging system, comprising:

• a flywheel having means for connection thereof to a drive shaft on an engine;
• the flywheel also being a rotor of an alternator and having a cup-shaped portion defined by an outer circular wall having a plurality of magnets mounted on an inner surface thereof, said rotor having magnetic timing means thereon, and said rotor being a one-piece ductile iron casting;
• a thickness of the circular wall of the rotor being less than or equal to 7% of a radius from a central axis of the rotor to an outer surface thereof and said circular wall thickness at a location where the magnets are mounted being less than or equal to 0.3 inches;
• a stator received within the cup-shaped portion of the flywheel;
• a stator having at least one power coil, at least one alternator coil, and at least one charge coil;
• the charging and regulating means connected between a system battery and the alternator coil for regulating a voltage delivered to the battery and charging the battery;
• the charging and regulating means comprising at least one semiconductor switching device in series with at least one output of the alternator coil, and biasing means connected to the power coil for supplying bias voltage to the semiconductor device;
• Hall effect device timing means mounted in fixed relation relative to the rotor and being connected to said power coil for generating a timing signal based on sensing the passage of said magnetic timing means on the rotor;
• and
• ignition means for igniting fuel for the engine connected to receive power from said charge coil and controlled by said timing means.