Ignition apparatus for an internal combustion engine
AssigneeMitsubishi Electric Corporation
InventorsTomohito Matsui, Takeshi Shimizu
Life of this patent
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Abstract
An ignition coil apparatus for an internal combustion engine can prevent noise from being radiated to the outside from a transformer without requiring special man-hours even if a case takes a complex shape. The ignition apparatus is provided with a transformer (2) including a primary coil (4), a secondary coil (5) and an iron core 1, a case (3) with the transformer (2) received therein, and an insulating resin 6 filled in the case (3). A high voltage generated at a high voltage side of the secondary coil (5) upon interruption of a primary current supplied to the primary coil (4) is impressed to a spark plug (14). The case (3) is made of a conductive plastic.
Claims6
An ignition apparatus for an internal combustion engine comprising:
- a transformer composed of a primary coil, a secondary coil and an iron core;
- a case with said transformer received therein;
- and
- an insulating resin filled into said case;
- wherein a high voltage generated at a high voltage side of said secondary coil upon interruption of a primary current supplied to said primary coil is impressed to a spark plug;
- and
- said case is made of a conductive plastic.
An ignition apparatus for an internal combustion engine comprising:
- a transformer composed of a primary coil, a secondary coil and an iron core;
- an exterior iron core that is arranged so as to enclose said transformer and form a path for a magnetic flux generated when a primary current is supplied to said primary winding;
- and
- a case that encloses an end of said transformer protruded from said external iron core and is connected to a low voltage connector for supplying an excitation current to said primary coil;
- wherein a high voltage generated at a high voltage side of said secondary coil upon interruption of a primary current supplied to said primary coil is impressed to a spark plug;
- and
- said case is made of a conductive plastic.
Dependencies are inferred from the claim text.