STARTING SYSTEM DETAILS


  1. CONSTRUCTION


    1. Armature Coil


      1. Instead of the round-shaped conductor wires used in a conventional starter assembly, the planetary reduction-segment conductor motor type starter assembly uses square-shaped conductors. In this type of construction, square shaped conductors can achieve the same magnetic field strength as would be achieved by winding numerous round-shaped conductor wires, but without increasing the mass. As a result, the output torque is increased, and the armature coil is more compact.

      2. Because the surface of the square-shaped conductors that are used in the armature coil functions as a commutator, the overall length of the planetary reduction-segment conductor motor type starter assembly is shortened.

        A01HM0CE06
        Text in Illustration
        *1 Round-shaped Conductor Wire *2 Conventional Type Starter Assembly
        *3 Planetary Reduction-segment Conductor Motor Type Starter Assembly *4 Starter Armature Assembly
        *5 Brush *6 Commutator
        *7 Surface Commutator *8 Square-shaped Conductor

    2. Field Coil


      1. Instead of the field coils used in the conventional starter assembly, the planetary reduction-segment conductor motor type starter assembly uses 2 types of permanent magnets: main magnets and interpolar magnets. The main and interpolar magnets are arranged alternately inside the starter yoke assembly. This allows the magnetic flux generated between the main and interpolar magnets to be added to the magnetic flux generated by the main magnets. In addition to increasing the amount of magnetic flux, this construction shortens the overall length of the starter yoke assembly.

        A01HLSHE05
        Text in Illustration
        *1 Interpolar Magnet *2 Starter Yoke Assembly
        *3 Main Magnet *4 Starter Armature Assembly
        *a Cross Section of Starter yoke Assembly *b Magnetic Flux Generated by Main Magnets
        *c Magnetic Flux Generated by Relationship between Main and Interpolar Magnets - -