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Ignition apparatus with improved sealing properties

An ignition device, ignition coil technology, applied in the direction of engine ignition, spark ignition controller, spark plug, etc., can solve the problems of time-consuming and cost, and achieve the effect of cost economy and simplicity, great cost saving potential, and simplified quality inspection

Inactive Publication Date: 2013-04-10
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However this is very time consuming and costly
Furthermore, it cannot be completely ruled out that there will still be damaged casings

Method used

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  • Ignition apparatus with improved sealing properties
  • Ignition apparatus with improved sealing properties
  • Ignition apparatus with improved sealing properties

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Embodiment Construction

[0019] An ignition device 1 according to a preferred embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 6 .

[0020] The ignition device 1 comprises a housing 2 for accommodating an ignition coil and other components, which is shown perspectively in FIG. 1 . For fastening the ignition device to the engine component 10 , one or more through-holes 8 are provided in the housing with inserted screw-on bushings 3 , through which screw-in screws 7 are threaded. This fastening of the housing 2 is shown in FIG. 4 . The screw-in bush 3 is a cylindrical bush which accommodates the threaded shaft 71 of the threaded screw 7 .

[0021] In the prior art, the pre-screw bushing 3 is always coated with an anti-corrosion coating, wherein problems can arise due to peeling or peeling and flakes. According to the invention, therefore, the screw-in bushing 3 is designed without an anti-corrosion coating. As can be seen from FIGS. 2 and 3 , the seal...

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PUM

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Abstract

The invention relates to an ignition apparatus for an internal combustion engine, comprising: a housing (2) for accommodating an ignition coil and further components of the ignition apparatus, wherein the housing (2) has a passage hole (8); and a screw-on bushing (3) which is arranged in the passage hole (8), wherein the housing (2) has a sealing contour (4; 14) on an outer face of an opening of the passage hole (8), wherein the sealing contour (4; 14) is arranged so as to run all the way around the opening of the passage hole (8), and wherein the screw-on bushing (3) is designed without a corrosion-protection coating.

Description

technical field [0001] The invention relates to an ignition device for an internal combustion engine with improved sealing properties on a fastening element of the ignition device. Background technique [0002] The prior art discloses ignition devices in various configurations. The housing of the ignition device is usually fastened to the engine part by means of screws, and for this purpose the housing has a through-opening into which a screw-on bushing is inserted to protect the housing. Such screw-on bushings are usually spray-coated simultaneously during the plastic-coating process for producing the housing. In order to avoid corrosion of the screw-on bushing, the screw-on bushing made of metal material is usually coated with an anti-corrosion layer. However, a disadvantage of the anti-corrosion coating applied to the screw bush is that flakes and correspondingly small chips often occur on the coating during injection molding into the housing. Since the corrosion layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/06H01F38/12
CPCF02P13/00H01F27/022H01F38/12
Inventor K·林登塔尔T·帕夫拉克
Owner ROBERT BOSCH GMBH
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