JPS54158541A - Ignition plug with resistive substance - Google Patents

Ignition plug with resistive substance

Info

Publication number
JPS54158541A
JPS54158541A JP6699278A JP6699278A JPS54158541A JP S54158541 A JPS54158541 A JP S54158541A JP 6699278 A JP6699278 A JP 6699278A JP 6699278 A JP6699278 A JP 6699278A JP S54158541 A JPS54158541 A JP S54158541A
Authority
JP
Japan
Prior art keywords
powder
resistive
terminal fitting
substance powder
resistive substance
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
Application number
JP6699278A
Other languages
Japanese (ja)
Inventor
Kazuhiko Yasuda
Naoto Miwa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
NipponDenso Co Ltd
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
Application filed by NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP6699278A priority Critical patent/JPS54158541A/en
Publication of JPS54158541A publication Critical patent/JPS54158541A/en
Pending legal-status Critical Current

Links

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  • Spark Plugs (AREA)

Abstract

PURPOSE: To reduce noise current by using ferrite powder as one of resistive substance powder to be mixed for obtaining a resistive member arranged between a terminal fitting and a central electrode in order to provide a zigzag passage of a electric current through the resistive member.
CONSTITUTION: Resistive substance powder is consisted of main resistive substance powder, containing, for example, pulverized tin oxide, made by mixing 3 weight % of antimony oxide and 5 weight % of tantalum oxide with tin oxide and baking at 1200°C and pulverizing, glass powder and ferrite powder, both of proper quantity, in order to reduce noise current. A central electrode 3 is inserted at a lower portion of a inner hole 1a of an insulating member 1 made of almina, then 0.2g of mixture of cupper and glass powder, 0.5g of insulating substance powder and 0.3g of mixture of cupper and glass powder are poured thereabove sequentially, thereafter, a terminal fitting 2 is inserted into the inner hole 1a. Further, whole of the insulating member 1 is heated until 700∼900°C, then, is compressed by imposing pressure on the terminal fitting 2.
COPYRIGHT: (C)1979,JPO&Japio
JP6699278A 1978-06-02 1978-06-02 Ignition plug with resistive substance Pending JPS54158541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6699278A JPS54158541A (en) 1978-06-02 1978-06-02 Ignition plug with resistive substance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6699278A JPS54158541A (en) 1978-06-02 1978-06-02 Ignition plug with resistive substance

Publications (1)

Publication Number Publication Date
JPS54158541A true JPS54158541A (en) 1979-12-14

Family

ID=13332001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6699278A Pending JPS54158541A (en) 1978-06-02 1978-06-02 Ignition plug with resistive substance

Country Status (1)

Country Link
JP (1) JPS54158541A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110298164A1 (en) * 2007-05-17 2011-12-08 Hoffman John W Small-diameter spark plug with resistive seal
JP6267779B1 (en) * 2016-12-05 2018-01-24 日本特殊陶業株式会社 Spark plug

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110298164A1 (en) * 2007-05-17 2011-12-08 Hoffman John W Small-diameter spark plug with resistive seal
US8272909B2 (en) * 2007-05-17 2012-09-25 Federal-Mogul World Wide, Inc. Method of assembling a small-diameter spark plug with resistive seal
JP6267779B1 (en) * 2016-12-05 2018-01-24 日本特殊陶業株式会社 Spark plug
WO2018105361A1 (en) * 2016-12-05 2018-06-14 日本特殊陶業株式会社 Spark plug

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