Waterproof spark plug hole cap of internal combustion engine
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorShigemi Murata
Life of this patent
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Abstract
In a plug hole cap of an ignition apparatus for an internal combustion engine, the plug hole cap has a high water resistant characteristic with respect to the plug hole, and is manufactured in low cost. The ignition apparatus includes a cylinder head cover for fixing an ignition coil, an ignition plug stored in a plug hole formed in the cylinder head cover, a plug hole cap for closing an upper portion of the plug hole and an air bleeding hole penetrating the plug hole cap, for communicating the plug hole with the atmosphere. In particular, a water resistant wall covers at least an outside of a peripheral portion of an air bleeding hole outlet of the plug hole cap.
Claims8
An ignition apparatus of an internal combustion engine comprising:
- a cylinder head cover for fixing an ignition coil;
- an ignition plug stored in a plug hole formed in the cylinder head cover;
- a plug hole cap for closing an upper portion of the plug hole;
- an air bleeding hole penetrating said plug hole cap, for communicating the plug hole with the atmosphere;
- and
- a water resistant wall for covering at least an outside of a peripheral portion of an air bleeding hole outlet of said plug hole cap.
An ignition apparatus of an internal combustion engine comprising:
- a cylinder head cover for fixing an ignition coil;
- an ignition plug stored in a plug hole formed in the cylinder head cover;
- a plug hole cap for closing an upper portion of the plug hole;
- an air bleeding hole penetrating said plug hole cap, for communicating the plug hole with the atmosphere;
- and
- an upper plug hole cap provided on said plug hole cap, said upper plug hole cap including a tower having an air bleeding hole communicated with the air bleeding hole formed in said plug hole cap.
Dependencies are inferred from the claim text.