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Spark plug and its method of production

A technology for ignition plugs and manufacturing methods, which is applied in the field of ignition plugs, can solve problems such as complex processing and complex mold production processes, and achieve the effects of easy production and molding, easy production, and high service life

Inactive Publication Date: 2012-03-28
BORGWARNER BERU SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The use of brittle metals as alloying components makes the metals in the precious metal regions also brittle and their handling is quite complicated
Its formation process is especially complicated in the mold production process.

Method used

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  • Spark plug and its method of production
  • Spark plug and its method of production

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Experimental program
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Embodiment Construction

[0022] refer to figure 1 , the ignition plug 1 of the present invention comprises an inner conductor 2, an insulating sheath 3 wrapping said inner conductor 2, the exterior of the insulating sheath 3 is provided with a glow plug body 4 wrapping the insulating sheath 3, and the outer surface of the ignition plug body 4 is A screw thread 5 is provided. The glow plug includes two electrodes, a first electrode 6 and a second electrode 7 , the first electrode 6 is the center electrode, electrically connected to the inner conductor 2 , and the second electrode 7 is a ground electrode, electrically connected to the glow plug body 4 . A noble metal region 8 is attached to the first electrode 6 , and a noble metal region 9 is attached to the second electrode 7 . The second electrode 7 is installed above the first electrode 6 in the form of a front electrode, so that the noble metal region 8 and the noble metal region 9 face each other at a distance A and form an ignition gap 10 .

[...

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Abstract

The invention describes a spark plug, which comprises an inner conductor, an insulator enclosing the inner conductor, a spark plug body enclosing the insulator and two electrodes forming a spark gap. The first electrode is a center electrode connected to the inner conductor in an electrically conductive manner and the second electrode is a ground electrode connected to the spark plug body in an electrically conductive manner. At least one of the electrodes has a precious metal region, adjoining the spark gap and consisting predominantly of platinum, iridium or an alloy of both and containing additionally at least one brittle metal. The precious metal region consists of a base material predominantly containing platinum and / or iridium, which comprises a coating with a brittle metal, which is more brittle than the base material.

Description

technical field [0001] The invention relates to a spark plug, which comprises an inner conductor, an insulating sheath covering the inner conductor, a glow plug body wrapping the insulating sheath, and first and second electrodes for forming an ignition gap, wherein the first The electrode is a central electrode, which is electrically connected to the inner conductor; the second electrode is a ground electrode, which is electrically connected to the glow plug body, and at least one of the first and second electrodes is provided with a noble metal region, and the noble metal The region is immediately adjacent to the ignition gap and consists essentially of platinum, iridium, or an alloy of the two, and additionally includes at least one brittle metal. Background technique [0002] A glow plug of the type described above is known from patent document EP 2 012 397 A2. In known glow plugs of this type, the noble metal region is formed by a molded part. The molded part is welde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T13/20H01T13/39H01T21/02
CPCH01T13/39H01T21/02H01T13/32
Inventor W·科尔
Owner BORGWARNER BERU SYST
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