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Ignition coil

A technology for ignition coils and primary coils, which is applied in the direction of transformers, electrical components, inductors, etc., and can solve the problem that the cylindrical part of the ignition coil is not disclosed to be inserted into plug holes with different inner diameters

Active Publication Date: 2006-06-28
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the ignition coil of JP-A-2004-63986, there is no disclosure about inserting the cylindrical part of the ignition coil into plug holes of different inner diameters

Method used

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  • Ignition coil
  • Ignition coil
  • Ignition coil

Examples

Experimental program
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Embodiment Construction

[0024] Such as Figures 1 to 3 As shown, an ignition coil 1 is electrically connected to a spark plug 6 to generate a spark in a combustion chamber of a cylinder of an internal combustion engine. The ignition coil 1 includes a cylindrical portion 2 and an igniter portion 3 . The cylindrical portion 2 accommodates a primary coil 21 and a secondary coil 22 wound coaxially with each other. The cylindrical portion 2 is inserted into the bung hole 71 of the engine case 7 . The cylindrical part 2 comprises an axial base 202 with an igniter part 3 serving as an in-line connector head. The igniter part 3 includes a connector and supplies electric power to the primary coil.

[0025] The cylindrical portion 2 includes an axial end portion 201 . The axial end portion 201 is arranged on the end of the cylindrical portion 2 inside the plug hole 71 when the cylindrical portion 2 is inserted into the plug hole 71 . The axial base 202 is arranged on the end of the cylindrical portion 2 t...

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PUM

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Abstract

An ignition coil (1) includes a cylindrical portion (2) insertable into a plug hole (71) of an engine case (7). The cylindrical part (2) has a base (202) and an end (201) respectively in its axial direction. The cylindrical part (2) has an elastically deformable outer peripheral part (34, 134, 234, 5, 28, 128, 24) which engages with the plug hole (71) to fix the cylindrical part (2) relative thereto the outer perimeter.

Description

technical field [0001] The present invention relates to ignition coils for generating sparks. Background technique [0002] The ignition coil is mounted to an internal combustion engine of a vehicle or the like. The ignition coil is electrically connected to the spark plug to create a spark within the combustion chamber of the cylinder. The cylinder type ignition coil has a cylindrical portion inserted into the plug hole of the engine case and an igniter portion attached to the base of the cylindrical portion in the axial direction of the cylindrical portion. [0003] The cylindrical portion accommodates a primary coil and a secondary coil wound coaxially with each other. The igniter section supplies power to the primary coil. [0004] However, in many cases, the engine case has a plurality of plug holes with different inner diameters. Therefore, when the ignition coil is mounted to the engine case, there is a possibility that a gap is formed between the cylindrical port...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/12
Inventor 武山正一川井一秀
Owner DENSO CORP
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