Ignition coil
AssigneeDenso Corporation
InventorsMasahiro Kondo, Kazutoyo Osuka, Shunichi Takeda
Life of this patent
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Abstract
An ignition coil has a connector electrically connected to an external circuit, an igniter for accommodating a switching element adapted to cause a current supplied from the connector to be intermittent, a primary coil portion for generating a predetermined voltage by the intermittent current, a secondary coil portion for stepping up the generated voltage and applying the resulting voltage to an ignition plug, and a resin insulating material which hardens in between the primary coil portion and the secondary coil portion to ensure insulation between the primary coil portion and the secondary coil portion. An outer shell of the igniter is formed of the resin insulating material.
Claims8
An ignition coil comprising:
- a connector for electrical connection;
- an igniter having a switching element for causing a current supplied through the connector to be intermittent;
- a primary coil portion for generating a predetermined voltage by the intermittent current;
- a secondary coil portion that steps up the generated voltage and applies the resulting voltage to an ignition plug;
- and
- a resin insulating material which hardens between the primary coil portion and the secondary coil portion to ensure insulation between the primary coil portion and the secondary coil portion, wherein an outer shell of the igniter is formed of the resin insulating material, and a relieving material is disposed between said igniter and said resin insulating material for relieving thermal stress.
Dependencies are inferred from the claim text.