EP3939133A1 - Zündkerzengehäuse mit korrosionsschutz auf der innenseite sowie zündkerze und herstellungsverfahren - Google Patents
Zündkerzengehäuse mit korrosionsschutz auf der innenseite sowie zündkerze und herstellungsverfahrenInfo
- Publication number
- EP3939133A1 EP3939133A1 EP20708082.1A EP20708082A EP3939133A1 EP 3939133 A1 EP3939133 A1 EP 3939133A1 EP 20708082 A EP20708082 A EP 20708082A EP 3939133 A1 EP3939133 A1 EP 3939133A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spark plug
- plug housing
- corrosion protection
- protection layer
- combustion chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/02—Details
- H01T13/06—Covers forming a part of the plug and protecting it against adverse environment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
- H01T21/02—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/32—Sparking plugs characterised by features of the electrodes or insulation characterised by features of the earthed electrode
Definitions
- the invention relates to a spark plug housing according to claim 1 and a spark plug with such a spark plug housing according to claim 9, as well as a
- the spark plug housing is placed in a drum or held on a frame for the coating.
- spark plug housings with a deep breathing space do not receive any or at least insufficient and no uniform coating on their inside with this method. This results in unfavorable storage or transport conditions that the
- Spark plug housing already corroded on its inside.
- the spark plug housing can no longer be used. If the corrosion of the breathing space goes unnoticed and the spark plug housing is used for a spark plug, then this spark plug has a significantly shorter service life than a spark plug with a non-corroded one
- Spark plug housing It is the object of the present invention to provide a spark plug housing and a spark plug in which there is as little corrosion as possible in the breathing space of the
- spark plug housing which has an inside, an outside and a longitudinal axis which extends from an end of the spark plug housing facing the combustion chamber to an end of the spark plug housing facing away from the combustion chamber
- spark plug housing wherein the spark plug housing has on its inside a circumferential shoulder which is set up so that a spark plug insulator rests on it, solved in that the spark plug housing on its inside a
- Spark plug housing is formed, wherein the portion extends from one to the combustion chamber facing end of the spark plug housing to at least over the shoulder and along the inner circumference of the spark plug housing.
- Corrosion layer is protected from unwanted corrosion during storage, transport and use of the spark plug. It is particularly advantageous that the corrosion protection layer extends from the end facing the combustion chamber
- Spark plug housing extends at least over the shoulder.
- the spark plug insulator rests on the shoulder of the inside of the spark plug housing.
- the gap between the spark plug housing and the spark plug insulator is sealed airtight at the shoulder so that the gas mixtures created in the combustion chamber cannot penetrate the spark plug housing further than this inner sealing point on the shoulder.
- the breathing space thus extends from the end of the facing the combustion chamber
- Spark plug housing to the shoulder on which the spark plug insulator rests and often seals the gap together with an inner seal.
- the anti-corrosion layer is an electroplated layer. This means that the corrosion layer was applied to the surface of the spark plug housing by means of a galvanic coating process. This is particularly evident in the galvanic coating process a very uniform anti-corrosion layer, which is also sufficiently far on the inside of the spark plug housing, if the galvanic
- the corrosion protection layer contains nickel and / or zinc. Corrosion layers with or from these elements are very stable. In particular, the corrosion protection layer is phosphorus-free.
- the spark plug housing only has the corrosion layer on its inside. This simplifies the production and the production costs for a spark plug housing with good corrosion protection.
- Spark plug housing in addition to the corrosion protection layer on further layers, in particular one or more intermediate layers and / or a sealing layer.
- Sealing layer a layer system, i.e. the different layers lie on top of each other. This results in the possibility of providing a particularly robust layer system for corrosion protection of the spark plug housing, which is required precisely for applications for spark plugs under extreme combustion conditions.
- the ground electrode and the center electrode are set up to jointly form an ignition gap.
- the invention also relates to a method for producing a
- spark plug housing which is also sufficiently wide on the inside of the Spark plug housing is formed.
- Spark plug housing for the section to be coated results. This enables a very even corrosion protection layer to be applied to the inside of the spark plug housing.
- FIG. 1 shows an example of a spark plug housing according to the invention.
- FIG. 2 shows a spark plug description of the exemplary embodiment
- a spark plug housing 2 according to the invention is shown in FIG. The
- a shoulder 25 is formed around the inside 24. This shoulder 25 is designed so that, in the case of a spark plug 1 with a spark plug insulator 3, this spark plug insulator 3 rests on the shoulder 25.
- the corrosion protection layer 50 is preferably by means of a galvanic one
- Coating electrode was arranged within the spark plug housing 2.
- the spark plug housing is typically made of a carbon steel such as CIO or C22.
- a connecting bolt 8 with a connecting nut extends into the spark plug insulator 3, via which the spark plug 1 can be electrically contacted with a voltage source not shown here.
- the connecting bolt 8 with the connecting nut form the end of the spark plug 1 facing away from the combustion chamber.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Spark Plugs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019203478.0A DE102019203478A1 (de) | 2019-03-14 | 2019-03-14 | Zündkerzengehäuse mit Korrosionsschutz auf der Innenseite sowie Zündkerze und Herstellungsverfahren |
PCT/EP2020/055402 WO2020182509A1 (de) | 2019-03-14 | 2020-03-02 | Zündkerzengehäuse mit korrosionsschutz auf der innenseite sowie zündkerze und herstellungsverfahren |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3939133A1 true EP3939133A1 (de) | 2022-01-19 |
Family
ID=69726587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20708082.1A Pending EP3939133A1 (de) | 2019-03-14 | 2020-03-02 | Zündkerzengehäuse mit korrosionsschutz auf der innenseite sowie zündkerze und herstellungsverfahren |
Country Status (7)
Country | Link |
---|---|
US (1) | US11437787B2 (de) |
EP (1) | EP3939133A1 (de) |
JP (1) | JP7231754B2 (de) |
CN (1) | CN113519100B (de) |
BR (1) | BR112021018071A2 (de) |
DE (1) | DE102019203478A1 (de) |
WO (1) | WO2020182509A1 (de) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2215276A1 (de) * | 1972-03-29 | 1973-10-31 | Daimler Benz Ag | Zuendkerze fuer brennkraftmaschinen |
JPH02291691A (ja) * | 1989-05-01 | 1990-12-03 | Toyota Motor Corp | 点火プラグ |
JPH031472A (ja) * | 1989-05-29 | 1991-01-08 | Ngk Spark Plug Co Ltd | 点火栓 |
DE4240646A1 (de) | 1992-12-03 | 1994-06-09 | Bosch Gmbh Robert | Zündkerze für Brennkraftmaschinen |
JP4286398B2 (ja) * | 1999-08-25 | 2009-06-24 | 日本特殊陶業株式会社 | スパークプラグ及びその製造方法 |
DE102004046895A1 (de) | 2004-09-28 | 2006-03-30 | Robert Bosch Gmbh | Zündkerze und Verfahren zu deren Herstellung |
JP5101833B2 (ja) | 2006-04-18 | 2012-12-19 | 日本特殊陶業株式会社 | エンジン点火部材の製造方法 |
JP4728437B1 (ja) | 2010-03-10 | 2011-07-20 | 日本特殊陶業株式会社 | スパークプラグ、スパークプラグ用の主体金具、及び、スパークプラグの製造方法 |
JP4906957B1 (ja) * | 2010-12-07 | 2012-03-28 | 日本特殊陶業株式会社 | スパークプラグ |
JP2012129026A (ja) | 2010-12-14 | 2012-07-05 | Denso Corp | スパークプラグ並びにその製造方法 |
-
2019
- 2019-03-14 DE DE102019203478.0A patent/DE102019203478A1/de active Pending
-
2020
- 2020-03-02 JP JP2021552979A patent/JP7231754B2/ja active Active
- 2020-03-02 US US17/433,216 patent/US11437787B2/en active Active
- 2020-03-02 BR BR112021018071A patent/BR112021018071A2/pt unknown
- 2020-03-02 EP EP20708082.1A patent/EP3939133A1/de active Pending
- 2020-03-02 WO PCT/EP2020/055402 patent/WO2020182509A1/de active Application Filing
- 2020-03-02 CN CN202080020749.6A patent/CN113519100B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
US20220123531A1 (en) | 2022-04-21 |
DE102019203478A1 (de) | 2020-09-17 |
BR112021018071A2 (pt) | 2021-11-23 |
JP2022523246A (ja) | 2022-04-21 |
US11437787B2 (en) | 2022-09-06 |
CN113519100A (zh) | 2021-10-19 |
CN113519100B (zh) | 2023-01-06 |
JP7231754B2 (ja) | 2023-03-01 |
WO2020182509A1 (de) | 2020-09-17 |
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