| 摘要 |
PURPOSE:To obtain an ignition signal voltage having a little noise voltage for an ignition device of internal-combustion engine by a method wherein the prescribed generator for ignition signal is provided in space being surrounded with a crank case and a base plate for fitting of a generator for igniting electric power source. CONSTITUTION:The generator 5 for igniting electric power source having a generating coil 6, a rotor 9, and the generator 14 for ignition signal having a stator 15, a magnetic inductor 20, are disposed in an array in the axial direction of a crank shaft 2 of internal combustion engine. The generator 14 for ignition signal is arranged in space 4 being surrounded with the crank case 1 manufactured with a non- magnetic material of aluminum, etc., and the base plate 3 for fitting of the generator 5 for igniting electric power source and being in the same condition with a state being shielded magnetically to make hard to receive influence of leakge flux from the generating 6 for igniting electric power source. Moreover magnetic leakage flux Lf generated from the generator 6 for igniting electric power source and magnetic flux Pf generated from the generator 14 for ignition signal at the time when the magnetic inductor 20 faces with a magnetic core 19 of the generating coil 18 for ignition signal are made to repel with each other. |
