BR0000959A - Spark plug and its manufacturing method - Google Patents

Spark plug and its manufacturing method

Info

Publication number
BR0000959A
BR0000959A BR0000959-8A BR0000959A BR0000959A BR 0000959 A BR0000959 A BR 0000959A BR 0000959 A BR0000959 A BR 0000959A BR 0000959 A BR0000959 A BR 0000959A
Authority
BR
Brazil
Prior art keywords
spark plug
central electrode
insulator
manufacturing
metal terminal
Prior art date
Application number
BR0000959-8A
Other languages
Portuguese (pt)
Inventor
Nakato Sugimoto
Hiroshi Masuda
Original Assignee
Ngk Spark Plug Co Ltda
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP11076409A external-priority patent/JP2000048931A/en
Application filed by Ngk Spark Plug Co Ltda filed Critical Ngk Spark Plug Co Ltda
Publication of BR0000959A publication Critical patent/BR0000959A/en

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  • Spark Plugs (AREA)

Abstract

"VELA DE IGNIçãO E SEU MéTODO DE FABRICAçãO" A presente invenção refere-se à vela de ignição e seu método de fabricação utilizada nos motores de combustão interna como motor de automóvel. A vela de ignição via de regra possui isolador (2) constituído da cerâmica à base de alumina disposto na parte interna do castelo metálico (1), onde se fixa o eletrodo de massa (4) e na parte interna, no furo passante (6), do referido isolador (2) está no sentido axial, inserido o eletrodo central (3), que se projeta, no outro lado do furo (6) está provida do terminal metálico (13), que por intermédio da selagem vítrea de eletrocondutor (16) e (17) ou pelo resistor (15) é conectado ao eletrodo central (3) em que através de aplicação de alta tensão no terminal metálico (13) passa a ocorrrer descarga de centelhamento entre a folga (g) formada no intervalo entre o eletrodo central (3) e eletrodo de massa (4). Nas circunstâncias especiais pode ocorrer falhas de centelhamento causadas pelo fenómeno chamado "flash over", na região da superfície do isolador localizada entre o terminal metálico (13) e o castelo metálico (1). A presente invenção visa fornecer a vela de ignição que permite vitrificação à temperatura relativamente baixa para facilitar no processo de vitrificação propriamente dita, o que permite também realização de processo de selagem do eletrodo central disposto no furo passante simultaneamente, além de possuir excelente propriedade isolante, no tocante à inibição de "flash over", utilizando-se as matérias-primas sem Pb ou quantidade substancialmente reduzida, contribuindo também despoluição do meio ambiente."IGNITION CANDLE AND ITS MANUFACTURING METHOD" The present invention relates to the spark plug and its manufacturing method used in internal combustion engines such as automobile engines. The spark plug as a rule has an insulator (2) made of alumina-based ceramics disposed on the inside of the metal bonnet (1), where the ground electrode (4) is fixed and on the inside, in the through hole (6 ), of said insulator (2) is in the axial direction, inserted the central electrode (3), which protrudes, on the other side of the hole (6) it is provided with the metal terminal (13), which through the glassy electroconductive sealing (16) and (17) or by the resistor (15) is connected to the central electrode (3) in which, through the application of high voltage to the metal terminal (13), a spark discharge occurs between the gap (g) formed in the interval between the central electrode (3) and ground electrode (4). In special circumstances, sparking failures caused by the phenomenon called "flash over" can occur in the region of the insulator surface located between the metal terminal (13) and the metal bonnet (1). The present invention aims to supply the spark plug that allows vitrification at a relatively low temperature to facilitate the vitrification process itself, which also allows the sealing process of the central electrode disposed in the through hole simultaneously, in addition to having excellent insulating properties, with regard to the inhibition of "flash over", using raw materials with no Pb or substantially reduced amount, also contributing to clean up the environment.

BR0000959-8A 1999-03-19 2000-03-17 Spark plug and its manufacturing method BR0000959A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11076409A JP2000048931A (en) 1998-05-22 1999-03-19 Spark plug and its manufacture

Publications (1)

Publication Number Publication Date
BR0000959A true BR0000959A (en) 2000-10-31

Family

ID=13604460

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0000959-8A BR0000959A (en) 1999-03-19 2000-03-17 Spark plug and its manufacturing method

Country Status (1)

Country Link
BR (1) BR0000959A (en)

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Legal Events

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B08F Application fees: dismissal - article 86 of industrial property law

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B08H Application fees: decision cancelled

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B08F Application fees: dismissal - article 86 of industrial property law

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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 2112 DE 28/06/2011.