Ignition coil with permanent magnet

Details Ignition coil with permanent magnet Ignition coil with permanent magnet

1989-06-09

1991-02-05

Kozma, Thomas J.

Inductor devices

With permanent magnet

123634, 336107, 336178, 336216, H01F 1706, H01F 2724

Patent

active

049908812

ABSTRACT:
In an ignition coil in which an air gap portion is provided at a portion of an iron core forming a closed magnetic circuit, which includes an exciting part iron core having a primary coil and a secondary coil wound therearound, and a strong permanent magnet is inserted in the air gap portion, the closed magnetic circuit is constructed to have the iron core and permanent magnet provided with respective suitable shapes, dimensions, properties, etc. so as to make most of the characteristics of the strong permanent magnet, thereby drastically reducing the size and weight of the ignition coil. Further, a concrete improvement of the construction of the closed magnetic circuit of the ignition coil is attained to assure excellent magnetoelectric conversion performance of the ignition coil.

REFERENCES:
patent: 2844786 (1958-07-01), Van Urk et al.
patent: 4546753 (1985-10-01), Pierrit
patent: 4658799 (1987-04-01), Kusaka et al.

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