BR9902148A - Spark plug and its manufacturing method. - Google Patents
Spark plug and its manufacturing method.Info
- Publication number
- BR9902148A BR9902148A BR9902148-0A BR9902148A BR9902148A BR 9902148 A BR9902148 A BR 9902148A BR 9902148 A BR9902148 A BR 9902148A BR 9902148 A BR9902148 A BR 9902148A
- Authority
- BR
- Brazil
- Prior art keywords
- spark plug
- insulator
- manufacturing
- enamel
- insulation
- Prior art date
Links
Landscapes
- Spark Plugs (AREA)
- Glass Compositions (AREA)
Abstract
''VELA DE IGNIçãO E SEU MéTODO DE FABRICAçãO". A presente invenção refere-se à vela de ignição e ao seu método de fabricação. A vela de ignição (100) utilizada para ignição de motor de combustão interna, como motores de automóveis, etc., geralmente é dotada de estrutura em que no lado interior do castelo metálico (1) está disposto o isolador (2) composto de cerâmica de alta alumina em cujo interior se encontra o eletrodo central (3), que estabelece conexão por meio da camada de selagem de vidro eletrocondutor (16 e 17) e resistor (15) intercalado ao terminal metálico (13) e por intermédio do qual se aplica a alta tensão quando se dá descarga de centelhamento na folga existente (g) entre o eletrodo lateral (4) e o eletrodo central (3) mencionado durante o funcionamento. No estado da técnica durante certas condições de operação da vela de ignição pode ocorrer descarga no intervalo entre o terminal metálico (13) e o castelo metálico (1) através da superfície da camada do esmalte (2d) do isolador (2), fenómeno chamado "flash over", que subtrair o desempenha da vela no funcionamento normal, cuja causa pode ser atribuída pela deficiência da performance de isolação no meio em que predomina umidade relativa elevada, alta temperatura relativa e impregnação de corpos esteranhos na superfície esmaltada (2d) ou pela própria característica de isolação do esmalte do isolador (2) da vela de ignição ou ainda pela isolação inadequada do siolador (2) da vela de ignição (100). A presente invenção com a adoção de nova composição da frita do esmalte e do isolador (2) adequada à característica de isolação à relativa alta temperatura e outras propriedades da vela de ignição, além de proporcionar a racionalização do processo de fabricação, determina o melhor desempenho na resolução do problema mencionado.'' IGNITION CANDLE AND ITS MANUFACTURING METHOD ". The present invention relates to the spark plug and its manufacturing method. The spark plug (100) used to ignite an internal combustion engine, such as car engines, etc., it is usually equipped with a structure in which the insulator (2) composed of high alumina ceramic is located on the inner side of the metallic castle (1), inside which the central electrode (3) is located, which establishes a connection through the electroconductive glass sealing layer (16 and 17) and resistor (15) interspersed with the metal terminal (13) and through which high voltage is applied when there is a spark discharge in the existing gap (g) between the side electrode ( 4) and the central electrode (3) mentioned during operation In the state of the art during certain operating conditions of the spark plug, discharge may occur in the gap between the metal terminal (13) and the metal bonnet (1) through the sup enamel layer surface (2d) of the insulator (2), a phenomenon called "flash over", which subtracts the performance of the spark plug in normal operation, the cause of which can be attributed to the lack of insulation performance in the environment where high relative humidity prevails , high relative temperature and impregnation of foreign bodies on the enameled surface (2d) or due to the isolation characteristic of the enamel of the insulator (2) of the spark plug or due to the inadequate insulation of the siolator (2) of the spark plug (100). The present invention, with the adoption of a new composition of the enamel frit and insulator (2) suitable for the insulation characteristic at the relative high temperature and other properties of the spark plug, besides providing the rationalization of the manufacturing process, determines the best performance in solving the mentioned problem.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14077998 | 1998-05-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9902148A true BR9902148A (en) | 1999-12-28 |
Family
ID=15276558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9902148-0A BR9902148A (en) | 1998-05-22 | 1999-05-20 | Spark plug and its manufacturing method. |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN100533885C (en) |
BR (1) | BR9902148A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009055397A1 (en) * | 2009-12-30 | 2011-07-07 | Robert Bosch GmbH, 70469 | Ceramic insulator for use in spark plug in direct injection engine, has UV-protection layer absorbing UV-radiation and comprising thickness that ranges from forty to sixty micrometers, where insulator is designed based on aluminum oxide |
CN104098273B (en) * | 2014-07-15 | 2016-02-10 | 陕西科技大学 | A kind of glass glaze for easy cut ampule and preparation method thereof |
CN109803935A (en) * | 2016-08-01 | 2019-05-24 | 天纳克股份有限公司 | With the corona ignition equipment for improving sealing element |
CN108409305B (en) * | 2018-03-21 | 2021-05-04 | 武汉理工大学 | Preparation method of ceramic insulator for extremely cold regions |
CN111525395B (en) * | 2019-02-03 | 2022-11-15 | 罗伯特·博世有限公司 | Insulator for spark plug and spark plug |
CN113319990B (en) * | 2020-12-31 | 2021-11-19 | 宁波纽时达火花塞股份有限公司 | Automatic glazing process for spark plug ceramic part |
-
1999
- 1999-05-20 BR BR9902148-0A patent/BR9902148A/en not_active IP Right Cessation
- 1999-05-21 CN CNB2006101081656A patent/CN100533885C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1913264A (en) | 2007-02-14 |
CN100533885C (en) | 2009-08-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application fees: dismissal - article 86 of industrial property law |
Free format text: REFERENTE A 11A ANUIDADE. |
|
B08K | Lapse as no evidence of payment of the annual fee has been furnished to inpi (acc. art. 87) |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2069 DE 31/08/2010. |