Ignition coil device for engine
AssigneesHitachi, Ltd., Hitcahi Car Engineering Co. Ltd.
InventorsJunichi Shimada, Eiichiro Shimada, Manabu Hashimoto
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Abstract
An individual ignition type ignition coil device for engine which is directly connected to each spark plug for use, comprises a coil case 6, and a center core 1, a secondary coil 3 wound on a secondary bobbin 2 and a primary coil 5 wound on the primary bobbin 4 each concentrically installed inside the coil case 6 in turn from the inside to the outside. Insulating resin 17, 8 is filled between the interiorly installed structural members. The secondary bobbin is made of material of modified PPO mixed with inorganic matter of 30% or more.
Claims11
A cylindrical ignition coil device for an individual ignition internal combustion engine, comprising:
- a center core made of a magnetic material;
- a cylindrical secondary bobbin made of modified polyphenylene oxide containing 30-40% inorganic matter and containing therein said center core;
- a secondary winding of the ignition coil, wound around an outer periphery of said secondary bobbin;
- a primary bobbin made of resin and containing therein said secondary coil;
- a primary winding of the ignition coil, wound around an outer periphery of said primary bobbin;
- a coil case made of resin and containing said center core, said secondary bobbin, said secondary coil, said primary bobbin, and said primary coil;
- and
- a layer of elastic material between said secondary bobbin and said center core.
A cylindrical ignition coil device for an individual ignition internal combustion engine, comprising:
- a center core made of a magnetic material;
- a cylindrical secondary bobbin made of modified polyphenylene oxide containing 30-40% inorganic matter and containing therein said center core;
- a secondary winding of the ignition coil, wound around an outer periphery of said secondary bobbin;
- a primary bobbin made of resin and containing there said secondary coil;
- a primary winding of the ignition coil, wound around an outer periphery of said primary bobbin;
- a coil case made of resin and containing said center core, said secondary bobbin, said secondary coil, said primary bobbin, and said primary coil;
- and
- a layer of insulating resin between said secondary bobbin and said center core.
Dependencies are inferred from the claim text.