JPS6277889U - - Google Patents
Info
- Publication number
- JPS6277889U JPS6277889U JP16925085U JP16925085U JPS6277889U JP S6277889 U JPS6277889 U JP S6277889U JP 16925085 U JP16925085 U JP 16925085U JP 16925085 U JP16925085 U JP 16925085U JP S6277889 U JPS6277889 U JP S6277889U
- Authority
- JP
- Japan
- Prior art keywords
- center electrode
- face
- electrode
- insulator
- spark plug
- 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
- 239000012212 insulator Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
Landscapes
- Spark Plugs (AREA)
Description
第１図は本考案の点火プラグの実施例の断面図
、第２図および第３図はそれぞれ本考案の他の実
施例を示す図、第４図は中心電極の摩耗状態を示
す図、第５図は中心電極および接地電極の両者に
白金を取付けた本考案の実施例、第６図は点火プ
ラグのねじ径と横飛び放電の関係を示す図、第７
図は従来の点火プラグの全体図、第８図はねじ径
の大きい従来の点火プラグの断面図、第９図は第
８図の点火プラグのねじ径を小さくしたものをそ
れぞれ示す。
１…中心電極、２…接地電極、３…碍子、４…
ハウジング、６…白金。
FIG. 1 is a cross-sectional view of an embodiment of the spark plug of the present invention, FIGS. 2 and 3 are diagrams showing other embodiments of the present invention, and FIG. 4 is a diagram showing the state of wear of the center electrode. Figure 5 shows an embodiment of the present invention in which platinum is attached to both the center electrode and the ground electrode, Figure 6 shows the relationship between the thread diameter of the spark plug and horizontal discharge, and Figure 7
8 shows an overall view of a conventional spark plug, FIG. 8 shows a sectional view of a conventional spark plug with a large thread diameter, and FIG. 9 shows the spark plug of FIG. 8 with a smaller thread diameter. 1... Center electrode, 2... Ground electrode, 3... Insulator, 4...
Housing, 6...Platinum.
Claims (1)
と該平行部分からＬ字形に湾曲して中心電極の端
面に対向する部分とから成る接地電極と、中心電
極を覆う管状の碍子とから成る火花点火式内燃機
関の点火プラグにおいて、中心電極の端面を碍子
端面より引き込ませると共に、中心電極の端面か
ら接地電極の対向部分までの距離ａ、管状碍子か
ら接地電極の平行部分までの距離ｂ、および碍子
端面よりの中心電極の引込量ｃの関係をｂ≦ａ≦
ｂ＋ｃとしたことを特徴とする点火プラグ。 Consisting of a center electrode, a ground electrode consisting of a portion extending substantially parallel to the center electrode and a portion curved into an L shape from the parallel portion and facing the end surface of the center electrode, and a tubular insulator that covers the center electrode. In a spark plug for a spark-ignition internal combustion engine, the end face of the center electrode is retracted from the end face of the insulator, and the distance a from the end face of the center electrode to the opposing part of the ground electrode, the distance b from the tubular insulator to the parallel part of the ground electrode, and the retraction amount c of the center electrode from the insulator end face, b≦a≦
A spark plug characterized by b+c.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16925085U JPS6277889U (en) | 1985-11-05 | 1985-11-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16925085U JPS6277889U (en) | 1985-11-05 | 1985-11-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6277889U true JPS6277889U (en) | 1987-05-19 |
Family
ID=31102883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16925085U Pending JPS6277889U (en) | 1985-11-05 | 1985-11-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6277889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020177855A (en) * | 2019-04-22 | 2020-10-29 | 国立大学法人 新潟大学 | Spark plug |
-
1985
- 1985-11-05 JP JP16925085U patent/JPS6277889U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020177855A (en) * | 2019-04-22 | 2020-10-29 | 国立大学法人 新潟大学 | Spark plug |
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