Apparatus for preventing electro-magnetic wave noise from being

Internal-combustion engines – High tension ignition system – Radio interference protection

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123143C, 123654, F02P 1100

Patent

active

053599810

ABSTRACT:
An apparatus for preventing the radiation and conduction of electro-magnetic wave noises generated from the igniting device of a gasoline engine is disclosed. The igniting portion of a gasoline engine such as an igniting coil, a continuously contacting and opening contact breaker, a power distributor, and igniting plugs generate all kinds of electro-magnetic wave noises of wide frequency bands. These noises give adverse effects to the various components of an automobile or an air plane such as electric and electronic convenience devices, safety devices and engine controllers, resulting in malfunctions of the components. By shielding and absorbing such electro-magnetic wave noises, an automobile or an air plane is protected from possible accidents, and human lives are saved.

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patent: 3965879 (1976-06-01), Fitzner
patent: 3967230 (1976-06-01), Kamigaito
patent: 4691667 (1987-09-01), Eberhardt et al.
patent: 4875457 (1989-10-01), Fitzner
patent: 5181498 (1993-01-01), Koiwa et al.

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