JPS6210434Y2 - - Google Patents
Info
- Publication number
- JPS6210434Y2 JPS6210434Y2 JP3363382U JP3363382U JPS6210434Y2 JP S6210434 Y2 JPS6210434 Y2 JP S6210434Y2 JP 3363382 U JP3363382 U JP 3363382U JP 3363382 U JP3363382 U JP 3363382U JP S6210434 Y2 JPS6210434 Y2 JP S6210434Y2
- Authority
- JP
- Japan
- Prior art keywords
- center
- spark
- plug
- combustion chamber
- ignition 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.)
- Expired
Links
- 238000002485 combustion reaction Methods 0.000 claims description 27
- 239000000446 fuel Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Spark Plugs (AREA)
Description
【考案の詳細な説明】
本考案は内燃機関の点火栓の形状および取り付
け状態の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in the shape and mounting condition of a spark plug for an internal combustion engine.
内燃機関の点火栓は、燃焼室の中央部に取り付
けられるのが好ましい。 The spark plug of the internal combustion engine is preferably mounted in the center of the combustion chamber.
これは、点火栓の火花放電により生成された火
炎が、放電間隙を中心として放電状態に広がるこ
とから、燃焼室の隅々まで迅速にかつ確実に混合
気を燃焼させるためである。 This is because the flame generated by the spark discharge from the ignition plug spreads around the discharge gap in a discharge state, so that the air-fuel mixture can be quickly and reliably combusted to every corner of the combustion chamber.
したがつて、従来の点火装置（日本特殊淘業発
行パンフレツト「NGKスパークプラグ」No.539
−15PP7、日産サービス周報第436号PL−８・LA
−2PP44）としては、第１図、第２図に示すよう
に、燃焼室１の壁面に吸気ポート２および排気ポ
ート３の形成箇所を確保したうえで、できるかぎ
り、燃焼室１の中央部に近隣した位置に点火栓４
を設置する。 Therefore, the conventional ignition device (Japan Special Trading Co., Ltd. published pamphlet "NGK Spark Plug" No. 539)
-15PP7, Nissan Service Bulletin No. 436 PL-8/LA
-2PP44), as shown in Figures 1 and 2, after securing the formation locations for the intake port 2 and exhaust port 3 on the wall surface of the combustion chamber 1, as much as possible in the center of the combustion chamber 1. Spark hydrant 4 in a nearby location
Set up.
図中、５は正極電極（中心電極）、６は負極電
極（側方電極）、７は取り付けねじ部、８は吸気
弁座、９は排気弁座である。 In the figure, 5 is a positive electrode (center electrode), 6 is a negative electrode (side electrode), 7 is a mounting thread, 8 is an intake valve seat, and 9 is an exhaust valve seat.
ところが、この従来例からも明らかなように、
高負荷運転時などの吸排気効率を高く維持する必
要から、吸気ポート２や排気ポート３の口径は最
大限に広く形成しなければならず、したがつて、
まず吸気ポート２や排気ポート３の形成箇所を優
先的に位置決めし、これらの吸排気ポート２，３
等を除いた箇所に点火栓４を設置している。この
ため、従来の点火栓４には、吸排気弁座８，９の
位置などによる制約により、燃焼室１の中央部よ
りもある程度扁心した位置に取り付けざるを得
ず、これに伴い燃焼の迅速化、燃費の低減に自ず
と一定の限度を生じていた。 However, as is clear from this conventional example,
Since it is necessary to maintain high intake and exhaust efficiency during high-load operation, the diameters of the intake port 2 and exhaust port 3 must be made as wide as possible.
First, prioritize the positions where the intake port 2 and exhaust port 3 will be formed, and
Ignition plugs 4 are installed at locations other than the above. For this reason, the conventional spark plug 4 has no choice but to be installed at a position somewhat offset from the center of the combustion chamber 1 due to constraints such as the positions of the intake and exhaust valve seats 8 and 9, and as a result, the combustion There was a certain limit to speeding up the process and reducing fuel consumption.
本考案はこのような従来の問題点に着目してな
されたもので、点火栓の火花放電部を点火栓中心
線上から扁心して設け、この扁心放電部を燃焼室
の中央部にくるように点火栓を燃焼室に取り付け
ることにより、上記問題点を解決するようにした
点火装置を提供することを目的とする。 The present invention was developed by focusing on these conventional problems.The spark discharge part of the ignition plug is provided eccentrically from the center line of the ignition plug, and this eccentric discharge part is placed in the center of the combustion chamber. It is an object of the present invention to provide an ignition device that solves the above problems by attaching a spark plug to a combustion chamber.
以下、本考案の実施例を図面にもとづいて説明
する。 Hereinafter, embodiments of the present invention will be described based on the drawings.
第３図、第４図に示すように、点火栓１４の中
心電極１０は、その先端を外周方向に曲折し、点
火栓本体１１の略外周付近に正極端子（火花放電
部）を形成する。 As shown in FIGS. 3 and 4, the tip of the center electrode 10 of the ignition plug 14 is bent toward the outer periphery to form a positive terminal (spark discharge portion) approximately near the outer periphery of the ignition plug body 11.
点火栓１４の側方電極１２は、上記中心電極１
０の曲折部１０Ａに放電間隙１３を介して近接し
た位置に点火栓本体１１の外周部から突設する。 The side electrodes 12 of the spark plug 14 are connected to the center electrode 1
The ignition plug body 11 is provided protruding from the outer circumferential portion of the ignition plug body 11 at a position close to the bent portion 10A of the ignition plug body 10 with a discharge gap 13 interposed therebetween.
このように形成される点火栓１４は、第５図に
示すように、シリンダヘツド１６などの、燃焼室
１の壁面で、吸気弁座８および排気弁座９を除い
た箇所に、できる限り燃焼室１の中心寄りに取り
付ける。 As shown in FIG. 5, the spark plug 14 formed in this way is placed on the wall surface of the combustion chamber 1, such as the cylinder head 16, except for the intake valve seat 8 and the exhaust valve seat 9, so that combustion can occur as much as possible. Install it near the center of room 1.
そして、点火栓１４の放電間隙１３は、燃焼室
１の最も中央寄りにくるように、適度な回転角度
により、点火栓１４のねじ止め位置を設定する。
即ち、中心電極１０の曲折部１０Ａが燃焼室１の
中央部に向くように、点火栓１４をシリンダヘツ
ド１６にねじ止めする。 The screwing position of the ignition plug 14 is set at an appropriate rotation angle so that the discharge gap 13 of the ignition plug 14 is located closest to the center of the combustion chamber 1.
That is, the ignition plug 14 is screwed to the cylinder head 16 so that the bent portion 10A of the center electrode 10 faces the center of the combustion chamber 1.
この場合、点火栓１の放電間隙１３が点火栓中
心線よりも燃焼室１の中心側にくるようにするた
めに、点火栓１４の絶縁体頭部１７に合いマーク
１８を着色する。 In this case, the mark 18 is colored to match the insulator head 17 of the spark plug 14 so that the discharge gap 13 of the spark plug 1 is closer to the center of the combustion chamber 1 than the center line of the spark plug 14.
一方、点火栓１４とシリンダヘツド１６の間に
は、第６図Ａに示すようなガスケツト１９を挾持
して、点火栓１４をシリンダヘツド１６に取着す
る。 On the other hand, a gasket 19 as shown in FIG. 6A is sandwiched between the ignition plug 14 and the cylinder head 16, and the ignition plug 14 is attached to the cylinder head 16.
ガスケツト１９は、弾性体と塑性体のいずれで
形成してもよいが、第６図ＡとＢを比較してわか
るように、点火栓１４の主着前後の変形量H1−
H2（第６図Ｂは取着後のガスケツト１９の状態
をあらわす。）が、少なくとも点火栓１４の取り
付けねじ部７のピツチ以上になるように形成す
る。なお、この場合のガスケツト１９は蛇膜状に
形成されている。 The gasket 19 may be made of either an elastic material or a plastic material, but as can be seen by comparing FIGS. 6A and 6B, the deformation amount H 1 - of the spark plug 14 before and after main contact
H 2 (FIG. 6B shows the state of the gasket 19 after installation) is formed to be at least the pitch of the mounting screw portion 7 of the spark plug 14. Note that the gasket 19 in this case is formed in a snake-like shape.
このように、火花放電部２２を点火栓中心から
偏心して設けた点火栓１４は、燃焼室１の壁面
に、従来の点火栓取り付け装置と同じ位置に取り
付けられるが、その火花放電部２２は点火栓中心
から偏心して設けられる分だけ、燃焼室１の中心
寄りに位置して設けられる。 In this way, the spark plug 14, in which the spark discharge part 22 is provided eccentrically from the center of the spark plug, is attached to the wall surface of the combustion chamber 1 at the same position as the conventional spark plug mounting device, but the spark discharge part 22 is installed eccentrically from the center of the spark plug. It is located closer to the center of the combustion chamber 1 by the amount of eccentricity provided from the center of the plug.
したがつて、点火栓１４の火花放電により点火
された着火ガスは、燃焼室１の中心寄りから略均
等に火炎面を形成して迅速に端ガスを燃焼してし
まう。 Therefore, the ignited gas ignited by the spark discharge from the ignition plug 14 forms a flame front almost evenly from the center of the combustion chamber 1, and quickly burns the end gas.
この結果、安定しかつ確実な燃焼状態を生成
し、機関出力の向上、燃費の改善を図ることがで
きる。 As a result, a stable and reliable combustion state can be generated, and engine output and fuel efficiency can be improved.
なお、本実施例の点火栓１４は、第７図Ａに示
すように中心電極１０を円柱状に形成してそのま
ま曲折して成形されるが、第７図Ｂのように、短
形断面の側方電極１２に対向する曲折部に平坦面
２０を形成してもよく、また第７図Ｃのように中
心電極２１を短形断面になるようにして途中から
屈曲して曲折部２１Ａを形成するようにしてもよ
い。 The ignition plug 14 of this embodiment is formed by forming the center electrode 10 into a cylindrical shape and bending it as shown in FIG. 7A, but as shown in FIG. The flat surface 20 may be formed at the bent portion facing the side electrodes 12, or the center electrode 21 may be bent in the middle to have a rectangular cross section as shown in FIG. 7C to form the bent portion 21A. You may also do so.
以上説明したように本考案によれば、点火栓の
中心電極の先端を外周方向に曲折し、この曲折部
に放電間隙を介して対向するように点火栓の中心
線から偏心して側方電極を設け、このように構成
した点火栓の火花放電部を燃焼室の中央寄りにく
るように、点火栓を取り付けたので、点火栓の取
り付け装置は従来と同じであつても点火栓の略半
径分だけ火花放電部が燃焼室中心に近隣し、これ
によつて機関の急速燃焼が実現し、燃費の低減、
出力の増大を図ることができるという効果を得
る。 As explained above, according to the present invention, the tip of the center electrode of the spark plug is bent in the outer circumferential direction, and the side electrodes are placed eccentrically from the center line of the spark plug so as to face this bent portion with a discharge gap in between. The ignition plug was installed so that the spark discharge part of the ignition plug configured in this way was located closer to the center of the combustion chamber, so even though the ignition plug installation device is the same as the conventional one, the spark plug is installed so that the spark discharge part of the ignition plug is located near the center of the combustion chamber. The spark discharge part is located close to the center of the combustion chamber, which enables rapid combustion in the engine, reduces fuel consumption, and
The effect is that the output can be increased.
第１図は従来の点火栓をあらわす正面図、第２
図は第１図の点火栓を取り付けた燃焼室の底面
図、第３図は本考案の実施例の点火栓をあらわす
正面図、第４図は同じく斜視図（但し合いマーク
の他例を示す）、第５図は第３図、第４図の点火
栓を取り付けた燃焼室の底面図、第６図Ａ，Ｂは
同じ実施例のガスケツトをあらわす断面図、第７
図Ａ，Ｂ，Ｃは各実施例の火花放電部をあらわす
斜視図である。
１……燃焼室、２……吸気ポート、３……排気
ポート、７……取り付けねじ部、１０……中心電
極、１０Ａ……曲折部、１１……点火栓本体、１
２……側方電極、１３……放電間隙、１４……点
火栓、１６……シリンダヘツド、１９……ガスケ
ツト、２２……火花放電部。
Figure 1 is a front view showing a conventional spark plug, Figure 2
The figure is a bottom view of the combustion chamber with the spark plug shown in Figure 1 attached, Figure 3 is a front view showing the spark plug of the embodiment of the present invention, and Figure 4 is a perspective view of the same (however, other examples of the markings are shown). ), Figure 5 is a bottom view of the combustion chamber with the spark plugs of Figures 3 and 4 attached, Figures 6A and B are sectional views showing gaskets of the same embodiment, Figure 7
Figures A, B, and C are perspective views showing the spark discharge section of each embodiment. DESCRIPTION OF SYMBOLS 1... Combustion chamber, 2... Intake port, 3... Exhaust port, 7... Mounting screw part, 10... Center electrode, 10A... Bent part, 11... Spark plug body, 1
2...Side electrode, 13...Discharge gap, 14...Ignition plug, 16...Cylinder head, 19...Gasket, 22...Spark discharge portion.
Claims (1)
この曲折部に放電間隙を介して対向するように点
火栓の中心線から偏心して側方電極を設け、この
点火栓の火花放電部を燃焼室の中央寄りにくるよ
うに点火栓を取り付けた内燃機関の点火装置。 Bend the tip of the center electrode of the spark plug toward the outer circumference,
A side electrode is provided eccentrically from the center line of the ignition plug so as to face this bent part with a discharge gap in between, and the ignition plug is installed so that the spark discharge part of the ignition plug is closer to the center of the combustion chamber. Engine ignition system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3363382U JPS58136685U (en) | 1982-03-10 | 1982-03-10 | Internal combustion engine ignition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3363382U JPS58136685U (en) | 1982-03-10 | 1982-03-10 | Internal combustion engine ignition system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58136685U JPS58136685U (en) | 1983-09-14 |
| JPS6210434Y2 true JPS6210434Y2 (en) | 1987-03-11 |
Family
ID=30045177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3363382U Granted JPS58136685U (en) | 1982-03-10 | 1982-03-10 | Internal combustion engine ignition system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58136685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011081978A (en) * | 2009-10-06 | 2011-04-21 | Ngk Spark Plug Co Ltd | Spark plug |
-
1982
- 1982-03-10 JP JP3363382U patent/JPS58136685U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011081978A (en) * | 2009-10-06 | 2011-04-21 | Ngk Spark Plug Co Ltd | Spark plug |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58136685U (en) | 1983-09-14 |
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