High efficiency electrical alternator system

Patent · Tue Oct 17 00:00:00 EDT 1989

OSTI ID:7153724

Safranek, E J

This patent describes an alternator employed in an engine having a drive shaft. It comprises: a flywheel connected to the drive shaft forming a rotor of the alternator, and the rotor having an interior cupshaped portion receiving a plurality of ceramic magnets; a stator constructed of silicon steel laminations positioned within the cup-shaped portion of the rotor and having at least one alternator coil on a stator pole positioned relative to the magnets on the rotor such that the magnets are directly adjacent and move past a pole face of the pole as the rotor rotates; the rotor cup-shaped portion being circumferentially defined by an outer circular wall surrounding the stator and having the ceramic magnets mounted directly on an inside surface thereof facing the at least one stator pole face; a ring-shaped starter motor ring gear surrounding the rotor and mounted on an outside surface of the outer circular wall; the outer circular wall having a thickness at a location where the magnets are mounted of equal to or less than 0.3 inches. The thickness of the outer circular wall expressed as a percentage of radius of the rotor from a central axis thereof to the outer surface of the outer circular wall being equal to or less than 7%. The rotor being of one-piece construction and comprising a ductile iron casting.

• Assignee: F and B Mfg. Co., Gurnee, IL
• Patent Number(s): US 4873962
• Application Number: PPN: US 7191875A
• OSTI ID: 7153724
• Resource Relation: Patent File Date: 9 May 1988
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
ALTERNATORS
DESIGN
INTERNAL COMBUSTION ENGINES
CERAMICS
FLYWHEELS
IRON
ROTORS
SILICON ALLOYS
STATORS
STEELS
ALLOYS
ELECTRIC GENERATORS
ELEMENTS
ENGINES
HEAT ENGINES
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL ENERGY STORAGE EQUIPMENT
METALS
TRANSITION ELEMENTS
330100* - Internal Combustion Engines