Denso Corporation

Nippondenso Co., Ltd.

Yoshitaka Satou

Masami Kojima

Kazutoyo Oosuka

Akimitsu Sugiura

Keisuke Kawano

Katsumi Nakazawa

Masato Ichikawa

Mamoru Urushizaki

Yoshihiro Shimoide

An electromagnetic coil which may be employed as an ignition coil for an internal combustion engine is disclosed. The electromagnetic coil includes a lower voltage winding portion and a higher voltage winding portion. The lower voltage winding portion is wound around a spool and includes a plurality of winding layers overlapped with each other and inclined at a given angle to the length of the spool. Each of the winding layers includes a collection of turns made up of a leading portion of wire. The higher voltage winding portion is wound around the spool adjacent the lower voltage winding portion and includes a plurality of winding layers overlapped with each other and inclined at a given angle to the length of the spool. Each of the winding layers includes a collection of turns made up of a trailing portion of the wire.

Slant winding electromagnetic coil and ignition coil for internal combustion engine using same

Slant winding electromagnetic coil and ignition coil for internal

An ignition coil for an internal combustion engine, having a seal between the ignition coil and a plug hole of the engine. An air passage is provided only on a head portion and a pipe portion of the ignition coil to permit air to pass. Pressure change in the plug hole can be equalized with the atmosphere through the air passage. Therefore, it becomes easy to make the seal and to attach the seal to the ignition coil because the seal does not have any air passage.

Ignition coil for an internal combustion engine

An ignition coil is composed of a transformer, an igniter, a housing accommodating them and a fixing portion disposed at a place within easy access from an opening of the housing to fix the igniter, a terminal pin disposed at a place of the housing within easy access from the opening and connected to the control circuit and a connector pin fixed to the housing and connected to the terminal pin. The igniter and fixing portion have a member for adjusting relative location therebetween to connect the connector pin and terminal pin without stress.

Ignition coil and method of manufacturing the same

Growing community of inventors

Toyohashi, Japan

Yoshitaka Satou