Ignition signal generator for internal combustion engines

Patent · Tue May 27 00:00:00 EDT 1986

OSTI ID:5502143

Kamiyama, T

An ignition signal generator for internal combustion engines is described which consists of: a main generator consisting of a cup-like fly-wheel which rotates accompanying the turn of an internal combustion engine and which has a plurality of field magnets attached to the inner peripheral surface thereof, and a stator which is so arranged as to oppose to the field magnets; and a signal generator consisting of a centerpiece which is disposed at the central portion of the fly-wheel and which has had magnets attached to the periphery thereof to excite the pulser, and stators that are provided in an opposing manner on the outside of the pulser-exciting magnets maintaining a gap relative thereto; wherein the signal generator is comprised of: a rotor which consists of a cylindrical magnet magnetized in the axial direction, and two disc-like magnetic pole pieces that are attached to both side surfaces of the magnet and that constitute the N pole and the S pole; and stators which are so disposed that the magnetic pole pieces are sandwiched therebetween, and which have a pulser coil wound on a central portion of a core of which the one end is opposed to the N pole of the magnetic pole pieces and of which the other end is opposed to the S pole; and wherein the disc-like magnetic pole pieces have first stepped portions formed between portions having a diameter larger than the outer diameter of the cylindrical magnet and portions having a diameter smaller than the diameter of the portions, the stepped portions having such a shape that is coupled by curves which change gradually along the peripheries of the magnetic pole pieces.

• Assignee: Hitachi, Ltd., Tokyo
• Patent Number(s): US 4591746
• OSTI ID: 5502143
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
ENGINES
EQUIPMENT
FLYWHEELS
FUNCTION GENERATORS
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
MAGNET COILS
MAGNET POLE PIECES
MAGNETS
MECHANICAL ENERGY STORAGE EQUIPMENT
PULSE GENERATORS
ROTORS
SIGNALS
STATORS