Ignition coil for internal combustion engine

A technology of ignition coil and internal combustion engine, applied in the direction of engine ignition, spark ignition controller, spark plug, etc., can solve the problem of low drainage, and achieve the effect of improving drainage and high waterproofing

Active Publication Date: 2013-10-30
HITACHI ASTEMO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although the ignition coil can ensure high water resistance that suppresses the intrusion of water into the plug hole under the environmental conditions of repeating the temporary and complete water submerged state, there is a possibility that the drainage property is low and the water stored in the reservoir part enters the plug hole. concern

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] initially used Figure 1 ~ Figure 3 , the configuration of the ignition coil for an internal combustion engine according to the first embodiment of the present invention will be described.

[0036] figure 1 It is a sectional view showing the configuration of the ignition coil for an internal combustion engine according to the first embodiment of the present invention. figure 2 yes figure 1 Another cross-sectional view of . image 3 yes figure 2 The A-A section diagram.

[0037] exist figure 1 Among them, the ignition coil 1 for an internal combustion engine is an independent ignition type ignition coil for an internal combustion engine that is assembled in a plug hole 2 of each cylinder formed in a cylinder head of the internal combustion engine, and is directly connected to an ignition spark plug 21 for use. The ignition coil 1 for an internal combustion engine includes a connector 16 . Through the internal terminal of the connector 16, electric power is suppl...

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PUM

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Abstract

Provided is an ignition coil for an internal combustion engine, the ignition coil having high waterproof performance which prevents water from entering a plug hole and also having high water discharge performance. A high-voltage generation section (3) for generating a high voltage is housed within a coil case (4). A plug hole seal (5) is provided in order to close the opening of a plug hole (2) in which an ignition plug (21) is mounted. The ignition coil is also provided with a space section (6) which is provided on the outer side of the high-voltage generation section (3), and an air passage (9) through which air flows between the space section (6) and the plug hole (2). The lower surface of the space section (9) is open (the entire lower surface is open to facilitate die removal).

Description

technical field [0001] The present invention relates to an ignition coil for an internal combustion engine that supplies a high voltage to generate a spark discharge in an ignition spark plug of an internal combustion engine, and more particularly to a waterproof ignition coil for an internal combustion engine that is suitable for a plug hole. Background technique [0002] In the existing ignition coils for internal combustion engines, in order to easily discharge and inhale the air in the plug hole generated when the temperature in the plug hole changes or when the ignition coil is attached and detached, the inside of the plug hole is communicated with the external atmospheric pressure side by an air passage, The air passage is provided at the boundary between the outer periphery of the ignition coil and the plug hole seal. However, due to ambient temperature changes or internal combustion engine wading into water, etc., the temperature of the plug hole will drop, and the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02P15/00H01F38/12
CPCH01F38/12F02P3/02H01F27/02F02P13/00
Inventor 高桥真喜男小林贵信安藏洋一守屋学次仓桥真
Owner HITACHI ASTEMO LTD
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