JPH01161690A - Quick combustion device of ignition plug - Google Patents
Quick combustion device of ignition plugInfo
- Publication number
- JPH01161690A JPH01161690A JP32104587A JP32104587A JPH01161690A JP H01161690 A JPH01161690 A JP H01161690A JP 32104587 A JP32104587 A JP 32104587A JP 32104587 A JP32104587 A JP 32104587A JP H01161690 A JPH01161690 A JP H01161690A
- Authority
- JP
- Japan
- Prior art keywords
- ignition
- groove
- plug
- ground electrode
- flame
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 230000001133 acceleration Effects 0.000 abstract description 3
- 230000001902 propagating effect Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 28
- 239000000446 fuel Substances 0.000 description 25
- 239000000567 combustion gas Substances 0.000 description 4
- 244000000626 Daucus carota Species 0.000 description 2
- 235000002767 Daucus carota Nutrition 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PQTCMBYFWMFIGM-UHFFFAOYSA-N gold silver Chemical compound [Ag].[Au] PQTCMBYFWMFIGM-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Spark Plugs (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は自動車などの内燃機関に使用する点火栓に間す
る。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a spark plug used in internal combustion engines such as automobiles.
「従来の技術」
従来、特公昭８２−１１４７１号公報に示す如く、接地
電極鈑のピストン側の面に引火溝を形成し、小容積の引
火溝の混合気を早期延焼させ、シリンダ内混合気の燃焼
初期に火炎伝播速度を加速させる技術を開発した。``Prior art'' Conventionally, as shown in Japanese Patent Publication No. 82-11471, an ignition groove is formed on the surface of the ground electrode plate on the piston side, and the air-fuel mixture in the small volume of the ignition groove is spread quickly, thereby reducing the air-fuel mixture in the cylinder. We have developed a technology to accelerate the flame propagation speed in the early stages of combustion.
「発明が解決しようとする問題点」
前記従来技術は、プラグギャップを形成する中心電極面
と、プラグギャップを隔てて接地電極鈑の引火溝側端開
口とを対向させていたが、円柱形の中心電極外周面に引
火溝の側端開口を臨ませていたから、着火時にプラグギ
ャップに発生する火炎核は中心電極の軸芯を中心として
放射状に拡散され、その火炎核の一部が引火溝内に延焼
するだけであり、着火によりプラグギャップに形成され
る火炎核の延焼力を引火溝内の混合気燃焼に有効に利用
し得す、プラグギャップの火炎核形成から引火溝の混合
気燃焼までの時間短縮を容易に行い得ない等の問題があ
った。"Problems to be Solved by the Invention" In the prior art, the center electrode surface that forms the plug gap and the opening on the flashing groove side of the ground electrode plate are opposed to each other across the plug gap. Since the side opening of the ignition groove was exposed to the outer peripheral surface of the center electrode, the flame kernel generated in the plug gap at the time of ignition was spread radially around the axis of the center electrode, and a portion of the flame kernel was inside the ignition groove. The fire spreads only, and the fire spreading power of the flame kernel formed in the plug gap due to ignition can be effectively used for the combustion of the mixture in the ignition groove. There have been problems such as the inability to easily shorten the time.
ｒ問題点を解決するための手段」
然るに、本発明は、中心電極と接地電極鈑の間にプラグ
ギャップを形成する点火栓において、前記中心電極先端
のピストン側の面に引火溝を形成し、プラグギャップを
形成する接地電極鈑面でプラグギャップを隔ててこれに
対向する引火溝を遮閉するように接地電極板を延設させ
たこと゛を特徴とするものである。[Means for Solving the Problem] However, the present invention provides an ignition plug that forms a plug gap between a center electrode and a ground electrode plate, in which an ignition groove is formed on the piston-side surface of the tip of the center electrode, A feature of the present invention is that the ground electrode plate is extended so as to block the ignition groove facing the plug gap across the ground electrode plate surface forming the plug gap.
「作 用」
従って、着火によりプラグギャップに形成される火炎核
が燃焼して膨張するときに接地電極板に反撥して引火溝
方向に突出するから、引火溝内の混合気を燃焼させる火
炎核の延焼力を従来よりも容易に増強し得、引火溝方向
へのプラグギャップからの火炎伝播加速度を従来よりも
大にし、また引火溝内での混合気延焼速度も従来より早
くし、従来に比べてプラグギャップの火炎核形成から引
火溝の混合気燃焼までの時面短縮を容易に行い得るもの
である。``Function'' Therefore, when the flame kernel formed in the plug gap due to ignition burns and expands, it is repelled by the ground electrode plate and protrudes toward the ignition groove, so that the flame kernel that burns the air-fuel mixture in the ignition groove. It is possible to easily increase the fire spreading power of the ignition groove than before, increase the flame propagation acceleration from the plug gap in the direction of the ignition groove, and increase the speed of mixture fire spread in the ignition groove than before. In comparison, it is possible to easily shorten the time period from flame kernel formation in the plug gap to mixture combustion in the ignition groove.
「実施例」
以下、本発明の実施例を図面に基づいて詳述する。第１
図は全体図、第２図及び第３゛図は部分図。"Example" Hereinafter, an example of the present invention will be described in detail based on the drawings. 1st
The figure is an overall view, and Figures 2 and 3 are partial views.
第４図は底面図であり、内燃機関のエンジンブロックに
螺着固定して接地させる導電金属製固定体−（１）と、
その固定体（１）に中間部を埋込み支持する陶磁製電気
絶縁体（２）とを備える。そして一端にターミナル（３
）を連結して中央に配置する円柱形の中心電極（４）を
前記絶縁体（２）に固定支持すると共に、前記固定体（
１）のニンジン挿入端に一対の矩形平板形の接地電極板
（５）（５）基端を一体固定させ、中心電極（４）軸芯
線とり〒１１．．各接地電極鈑（５）（５）を延設させ
る。FIG. 4 is a bottom view, showing a conductive metal fixing body (1) that is screwed onto the engine block of an internal combustion engine and grounded;
The fixed body (1) is provided with a ceramic electric insulator (2) that embeds and supports the intermediate portion. And at one end there is a terminal (3
) is fixedly supported on the insulator (2), and a cylindrical center electrode (4) connected to the center electrode (4) is fixedly supported on the insulator (2).
The base ends of a pair of rectangular flat ground electrode plates (5) (5) are integrally fixed to the carrot insertion end of 1), and the axis of the center electrode (4) is fixed to the carrot insertion end of 11. ．． Each ground electrode plate (5) (5) is extended.
また前記中心電極（４）先端に溶接加工により引火鈑（
６）を一体固定し、その引火鈑（８）により中心電極（
４）の一部を形成すると共に、中心電極（４）軸芯に対
し略直交する方向に前記引火鈑（６）を延設させ、引火
鈑（６）両側端面とこれに対向する各接地電極板（５）
（５）面との間にプラグギャップ（７）（７）を形成す
る。In addition, a flammable plate (
6) are fixed together, and the center electrode (
4), and the spark plate (6) extends in a direction substantially perpendicular to the axis of the center electrode (4), and both side end surfaces of the spark plate (6) and each ground electrode facing thereto Board (5)
(5) A plug gap (7) (7) is formed between the surfaces.
さらに−前記中心電極（４）先端のピストン側（Ａ）の
引火鈑（６）面に開放角度が約１００−１２０度の端面
三角形の引火溝（８）を形成し、引火鈑（６）の長手方
向に引火溝（８）を延設させ、前記各プラグギャップ（
７）（７）に引火溝（８）側端を開口連通させると共に
１．前記プラグギャップ（７）（７）を形成する接地電
極板（５）（５）面でプラグギャップ（７）（７）を隔
ててこれに対向する引火溝（８）両側端開口を遮閉する
ように、前記各接地電極板（５）（５）先端を延設して
いる。Furthermore, a triangular ignition groove (8) with an opening angle of approximately 100 to 120 degrees is formed on the ignition plate (6) surface on the piston side (A) at the tip of the center electrode (4), and The ignition groove (8) is extended in the longitudinal direction, and each of the plug gaps (
7) Open and communicate the side end of the ignition groove (8) with (7) and 1. The openings at both ends of the ignition groove (8) facing the ground electrode plate (5) (5) forming the plug gap (7) (7) across the plug gap (7) (7) are closed off. As shown, the tips of each of the ground electrode plates (5) (5) are extended.
本実施例は上記の如く構成するもので、エンジンに固定
体（１）を取付け、ターミナル（３）に通電することに
より、中心電極（４）先端の引火鈑（８）側端面と接地
電極板（５）間のプラグギャップ（７）にスパークが発
生するもので、エンジンのシリンダに供給される混合気
はピストンによって圧縮され、ピストンの上死点直前で
中心電極（４）に通電されると、中心電極（４）先端の
引火鈑（６）側端面と接地電極板（５）のスパーク発生
側面の間にスパークが生じて混合気に点火され、混合気
が燃焼してこの爆発力によりピストンが押戻される爆発
工程が行われる。This embodiment is constructed as described above, and by attaching the fixed body (1) to the engine and energizing the terminal (3), the end face of the center electrode (4) on the side of the flammable plate (8) at the tip of the center electrode (4) and the ground electrode plate are connected. Sparks are generated in the plug gap (7) between (5) and the air-fuel mixture supplied to the engine cylinder is compressed by the piston, and when the center electrode (4) is energized just before the piston's top dead center. A spark is generated between the spark plate (6) side end face of the center electrode (4) and the spark generation side of the ground electrode plate (5), igniting the air-fuel mixture, and the air-fuel mixture burns, causing the piston to explode. An explosion process occurs in which the is pushed back.
前記プラグギャップ（７）のスパークによって核部に第
１の種火である火炎核が形成され、他部に比べて容積が
小さい引火溝（８）内の混合気に火炎核が延焼して引火
溝（８）内の混合気が早期に燃焼し、火炎核よりも大き
な第２の種火を形成すると共に、引火溝（８）内の混合
気が燃焼して膨張する力が該部（８）内で反撥して物理
的に加速されてシリンダ内に放出され、シリンダ内の混
合気を燃焼させるもので、引火溝（８）の燃焼ガスを第
２の種火としてシリンダ内の混合気の燃焼時間を短縮し
、不完全燃焼ガスの発生を防止し、またピストンの圧縮
工程での出力損失を低下させて機関効率を向上させ、燃
料消費量を低減させるものである。The spark in the plug gap (7) forms a flame kernel, which is the first pilot flame, in the core part, and the flame kernel spreads to the air-fuel mixture in the ignition groove (8), which has a smaller volume than other parts, and ignites. The air-fuel mixture in the groove (8) burns early to form a second pilot flame larger than the flame kernel, and the force of the air-fuel mixture in the ignition groove (8) to burn and expand is ) and is physically accelerated and released into the cylinder to burn the air-fuel mixture in the cylinder, using the combustion gas in the ignition groove (8) as a second pilot flame to burn the air-fuel mixture in the cylinder. It shortens combustion time, prevents the generation of incomplete combustion gas, and reduces power loss during the compression process of the piston, improving engine efficiency and reducing fuel consumption.
尚して、前記プラグギャップ（７）に火炎核が形成され
たとき、その火炎核の燃焼膨張カカ冑委地電極鈑（５）
面に反撥し、火炎核が物理的に加速されて引火溝（８）
方向に突出するから、着火によりプラグギャップ（７）
に火炎核が形成され、その火炎核が引火溝（８）内に延
焼し、引火溝（８）内の混合気が燃焼完了するのに必要
な時間が短縮できると共に、接地電極板（５）面に反撥
させる火炎核の物理的な加速により、引火溝（８）内の
混合気を越境させて形成する第２の種火の延焼火力を一
層増幅させることができるものである。Furthermore, when a flame kernel is formed in the plug gap (7), the combustion expansion of the flame kernel causes the electrode plate (5) to
The flame core is physically accelerated by repulsion from the surface, causing the ignition groove (8)
Since it protrudes in the direction, the plug gap (7) is caused by ignition.
A flame kernel is formed in the ignition groove (8), the flame kernel spreads in the ignition groove (8), and the time required for the mixture in the ignition groove (8) to complete combustion can be shortened, and the ground electrode plate (5) By physically accelerating the flame kernel that is repulsed by the surface, it is possible to further amplify the fire spread of the second pilot flame formed by crossing the air-fuel mixture in the ignition groove (8).
さらに第５図乃至第７図は他の実施例を示すもので、単
一の接地電極板（５）に対向させて引火鈑（６ンー側端
を臨ませ、プラグギャップ（７）を形成すると共に、引
火鈑（６）他側端でピストン側（Ａ）と反対の面を中心
電極（４）先端に溶接固定させたもので、端面半円形の
引火溝（８）を引火鈑（６）のピストン側に形成し、プ
ラグギャップ（７）で形成された火炎核が接地電極板（
５）面に反撥して引火溝（８）−側端方向に突出し、引
火溝（８）内の混合気が燃焼により該部（８）内で反撥
してピストン側（Ａ）の混合気を燃焼させると共に、プ
ラクギャップ（７）と反対側の引火溝（８）他側端から
この外方の混合気を延焼させるものである。Furthermore, FIGS. 5 to 7 show another embodiment in which a spark plate (6) is placed opposite to a single ground electrode plate (5) with its side end facing to form a plug gap (7). In addition, the other end of the ignition plate (6), which is opposite to the piston side (A), is welded and fixed to the tip of the center electrode (4), and the semicircular ignition groove (8) on the end surface is fixed to the ignition plate (6). The flame kernel formed in the plug gap (7) is formed on the piston side of the ground electrode plate (
5) It is repulsed by the surface and protrudes toward the side end of the ignition groove (8), and the air-fuel mixture in the ignition groove (8) is combusted and repulsed within this part (8), causing the air-fuel mixture on the piston side (A) to At the same time, this mixture is caused to spread from the other end of the ignition groove (8) on the opposite side to the plaque gap (7).
なお、接地電極板をＬ形に折曲げてプラグギャップを形
成する一般の市販点火栓と、第５図乃至第７図に示す構
造と略凹−形状の速燃焼点火栓とを用い、試験走行を行
った実験結果を下記表１に示す。A test run was conducted using a general commercially available ignition plug whose ground electrode plate is bent into an L shape to form a plug gap, and a fast-burning ignition plug with the structure shown in FIGS. 5 to 7 and a substantially concave shape. The experimental results are shown in Table 1 below.
表 １
さらに第８図及び第９図は他の実施例を示すもので、中
心電極（４）を中心に同一円周上に略等間隔に３本の接
地電極板（５）・・・を設け、中心電極（４）軸芯から
略１２０度間隔で放射状に三方向に引火溝（８）を分岐
形成し、引火溝（８）の各側端を各接地電極板（５）・
・・に対設させ、３個所にプラグギャップ（７）・・・
を形成した多極構造に構成している。Table 1 Furthermore, FIGS. 8 and 9 show other embodiments, in which three ground electrode plates (5)... are arranged at approximately equal intervals on the same circumference around the center electrode (4). The ignition grooves (8) are branched radially in three directions at approximately 120 degree intervals from the axis of the center electrode (4), and each side end of the ignition groove (8) is connected to each ground electrode plate (5).
... and plug gaps (7) at three locations...
It has a multipolar structure with
さらに第１０図及び第１１図は他の実施例を示すもので
、中心電極（４）を中心に同一円周上に略等間隔に４木
の接地電極板（５）・・・を設け、中心電極（４）軸芯
から略９０度間隔で放射状に四方向に引火鈑（６）を分
岐形成し、端面四角形の引火溝（８）を十字形に引火鈑
（６）のピストン側に形成し、引火溝（８）の各側端を
各接地電極板（５）・・・に対設させ、４個所にプラグ
ギャップ（７）・・・を形成した多極構造に構成してい
る。Furthermore, FIGS. 10 and 11 show another embodiment, in which four ground electrode plates (5) are provided at approximately equal intervals on the same circumference around the center electrode (4), Flaming plates (6) are branched radially in four directions at approximately 90-degree intervals from the center electrode (4) axis, and rectangular flaming grooves (8) are formed in a cross shape on the piston side of the flaming plates (6). Each side end of the ignition groove (8) is arranged opposite to each ground electrode plate (5), and a multi-pole structure is formed in which plug gaps (7) are formed at four locations.
さらに第１２図乃至第１４図は他の実施例を示すもので
、偏平な鋼板を切断及び折曲げ加工して引火鈑（８）を
形成し、端面台形の引火溝（８）を形成する引火鈑（６
）の長手方向側面を扇形に形成すると共に、プラグギャ
ップ（７）を形成する接地電極板（５）の面でこの長平
方向に導火溝（９）を形成したもので、プラグギャップ
（７）の火炎核を接地電極板（５）面に反撥させて引火
溝（８）内に放出させ、また引火溝（８）内で燃焼させ
る混合気容積を側端から中央に至るまでに比例増加させ
ると共に。Furthermore, FIGS. 12 to 14 show another embodiment, in which a flat steel plate is cut and bent to form a flash plate (8), and a flash groove (8) with a trapezoidal end surface is formed. Board (6
) is formed into a fan shape in the longitudinal direction, and a spark groove (9) is formed in the elongated direction on the surface of the ground electrode plate (5) forming the plug gap (7). The flame kernel is repelled by the surface of the ground electrode plate (5) and released into the ignition groove (8), and the volume of the air-fuel mixture combusted in the ignition groove (8) is proportionally increased from the side edges to the center. With.
プラグギャップ（７）の火炎核により導火溝（９）内の
混合気を早期燃焼させるもので、第２図の構造に比べて
引火溝（８）容積を大きくし、燃料であるプロパンガス
の燃焼に適した構造を得るものである。The flame kernel in the plug gap (7) causes the air-fuel mixture in the ignition groove (9) to be combusted early, and the volume of the ignition groove (8) is increased compared to the structure shown in Figure 2, so that the propane gas that is the fuel can be burned quickly. This provides a structure suitable for combustion.
さらに第１５図乃至第１７図は他の実施例を示すもので
、銀金加工により引火溝（８）を形成する引火鈑（６）
の長手方向側面を三角形に形成すると共に、プラグギャ
ップ（７）を形成する面と反対側の接地電極板（５）外
側面でこの長平方向に誘引溝（ｌＯ）を形成し、また接
地電極板（５）の基端及び先端に連通孔（１１）（１２
）を開設した・もので、プラグギャップ（７）の火炎核
を引火溝（８）方向に突出させると共に、連通孔（ｔｔ
）（１２）を介して誘引溝（１０）内の混合気も早期燃
焼させ、引火溝（８）からの延焼が遅れ易い反対側の接
地電極板（５）外側の混合気の燃焼も早期に行わせるも
のである。Furthermore, FIGS. 15 to 17 show other embodiments, in which a flashing plate (6) is formed with a flashing groove (8) by silver-gold processing.
The longitudinal side surface of the ground electrode plate (5) is formed into a triangular shape, and an attraction groove (lO) is formed in this elongated direction on the outer surface of the ground electrode plate (5) opposite to the surface forming the plug gap (7). Communication holes (11) and (12) are provided at the proximal and distal ends of (5).
) is opened to allow the flame core of the plug gap (7) to protrude toward the ignition groove (8), and the communication hole (tt
) (12), the air-fuel mixture in the induction groove (10) is also early combusted, and the air-fuel mixture outside the ground electrode plate (5) on the opposite side, where the spread of fire from the ignition groove (8) is likely to be delayed, is also quickly combusted. It is something to be done.
さらに第１８図乃至第２０図は他の実施例を示すもので
、引火鈑（６）の略中央部を中心電極（４）側に突出さ
せ、引火溝（８）の略中央部を窪ませて両側端に比べて
混合気容積を大きくすると共に、プラグギャップ（７）
を形成する接地電極板（５）の面でこの長平方向に端面
円形の導火溝（９）を形成し、また引火鈑（８）両端を
底面視円形に形成したもので、引火溝（８）での終期燃
焼ガス量を急増させ、燃焼ガスの膨張力を大きくすると
共に、導火溝（９）面に対し引火鈑（６）側端面を略平
行に形成して、プラグギャップ（７）でのスパークを良
好に得るものである。Furthermore, FIGS. 18 to 20 show another embodiment in which the approximate center of the flash plate (6) is made to protrude toward the center electrode (4), and the approximate center of the flash groove (8) is depressed. In addition to increasing the air-fuel mixture volume compared to both ends, the plug gap (7)
A ignition groove (9) with a circular end face is formed in the elongated direction on the surface of the ground electrode plate (5) that forms the ignition plate (8). ), the expansion force of the combustion gas is increased, and the end face of the spark plate (6) is formed approximately parallel to the face of the fuse groove (9), thereby increasing the plug gap (7). This allows for good spark generation.
さらに第２１図乃至第２３図は他の実施例を示すもので
、引火鈑（８）の略中央部を中心電極（４）と反対側に
突出させ、引火溝（８）の略中央部をピストン側（Ａ）
に突出させて両側端と中央部の間に外向きの斜面を形成
すると共に、プラグギャップ（７）を形成する接地電極
板（５）の面でこの長手方向に端面三角形の導火溝（８
）を形成し、また引火鈑（８）両端を底面視三角形に形
成したもので、引火溝（８）での混合気延焼方向をピス
トン側（Ａ）に向け、燃焼ガスの膨張力作用方向をピス
トン側（Ａ）に方向転換させると共に、導火溝（９）面
に対し引火鈑（８）側端面を略平行に形成して、プラグ
ギャップ（７）でのスパークを良好に得るものである。Furthermore, FIG. 21 to FIG. 23 show another embodiment in which the approximately central portion of the flaming plate (8) is projected to the side opposite to the center electrode (4), and the approximately central portion of the flaming groove (8) is Piston side (A)
A triangular ignition groove (8) is formed in the longitudinal direction of the ground electrode plate (5), which protrudes outward to form an outward slope between both ends and the center part, and forms a plug gap (7).
), and both ends of the ignition plate (8) are formed in a triangular shape when viewed from the bottom, so that the direction in which the air-fuel mixture spreads in the ignition groove (8) is directed toward the piston side (A), and the direction in which the expansion force of the combustion gas acts is directed. The direction is changed to the piston side (A), and the end face on the side of the spark plate (8) is formed approximately parallel to the face of the fuse groove (9) to obtain a good spark in the plug gap (7). .
「発明の効果」
以上実施例から明らかなように本抛明は、中心電極（４
）と接地電極板（５）の間にプラグギャップ（７）を形
成する点火栓において、前記中心電極（４）先端のピス
トン側（Ａ）の面に引火溝（８）を形成し、プラグギャ
ップ（７）を形成する接地電極板（５）面でプラグギャ
ップ（７）を隔ててこれに対向する引火溝（８）を遮閉
するように接地電極板（５）を延設させたもので１着火
によ、リプラグギャップ（７）に形成される火炎核が燃
焼して膨張するときに接地電極板（５）に反撥して引火
溝（８）方向に突出するから、引火溝（８）内の混合気
を燃焼させる火炎核の延焼力を従来よりも容易に増強で
き、引火溝（８）方向へのプラグギャップ（７）からの
火炎伝播加速度を従来よりも大にし、また引火溝（８）
内での混合気延焼速度も従来より早くし、従来に比べて
プラグギャップ（７）の火炎核形成から引火溝（８）の
混合気燃焼までの時間短縮を容易に行うことができる等
の効果を奏するものである。"Effects of the Invention" As is clear from the above embodiments, the present invention has a central electrode (4
) and a ground electrode plate (5), an ignition groove (8) is formed on the piston side (A) surface of the tip of the center electrode (4), and the plug gap is The ground electrode plate (5) is extended so as to block the ignition groove (8) facing the ground electrode plate (5) across the plug gap (7) from the ground electrode plate (5) forming the plug gap (7). 1. When the flame kernel formed in the replug gap (7) burns and expands due to ignition, it is repelled by the ground electrode plate (5) and protrudes toward the ignition groove (8). ) can easily increase the fire spreading power of the flame kernel that burns the air-fuel mixture in the ignition groove (8), and increase the acceleration of flame propagation from the plug gap (7) toward the ignition groove (8) than before. (8)
The combustion speed of the air-fuel mixture within the combustion chamber is also faster than before, and the time from the formation of a flame nucleus in the plug gap (7) to the combustion of the air-fuel mixture in the ignition groove (8) can be easily shortened compared to the conventional method. It is something that plays.
第１図は本発明の一実施例を示す全体図、第２図及び第
３図はその部分図、第４図は底面図、第５図乃至第２３
図は他の実施例を示す説明図であ名。
（４）・・・ 中心電極
（５）・・・ 接地電極
（７）・・・ プラグギャップ
（８）・・・ 引 火 溝（Ａ）・・・
ピストン側
８６図
５ Ａ
第８ 図
ｂ′Ｃ
８１２凹
８１３図
第１５ 図
８１６図
第１８図
第２１図Fig. 1 is an overall view showing one embodiment of the present invention, Figs. 2 and 3 are partial views thereof, Fig. 4 is a bottom view, and Figs. 5 to 23.
The figure is an explanatory diagram showing another embodiment. (4)... Center electrode (5)... Ground electrode (7)... Plug gap (8)... Spark groove (A)...
Piston side 86 Fig. 5 A Fig. 8 b'C 812 concave 813 Fig. 15 Fig. 816 Fig. 18 Fig. 21
Claims (1)
点火栓において、前記中心電極先端のピストン側の面に
引火溝を形成し、プラグギャップを形成する接地電極鈑
面でプラグギャップを隔ててこれに対向する引火溝を遮
閉するように接地電極鈑を延設させたことを特徴とする
点火栓の速燃焼装置。In a spark plug that forms a plug gap between a center electrode and a ground electrode plate, an ignition groove is formed on the piston side surface of the tip of the center electrode, and the spark groove is separated from the plug gap by the ground electrode plate surface that forms the plug gap. 1. A quick combustion device for a spark plug, characterized in that a ground electrode plate is extended so as to block a spark groove facing the spark plug.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32104587A JPH01161690A (en) | 1987-12-17 | 1987-12-17 | Quick combustion device of ignition plug |
| US07/268,788 US5007389A (en) | 1987-12-17 | 1988-11-09 | Ignition plug for internal combustion engines and a process for igniting gas mixture by the use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32104587A JPH01161690A (en) | 1987-12-17 | 1987-12-17 | Quick combustion device of ignition plug |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24839488A Division JPH01161691A (en) | 1987-12-17 | 1988-09-30 | Combustion method by ignition plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01161690A true JPH01161690A (en) | 1989-06-26 |
Family
ID=18128187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32104587A Pending JPH01161690A (en) | 1987-12-17 | 1987-12-17 | Quick combustion device of ignition plug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01161690A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0334283A (en) * | 1989-02-21 | 1991-02-14 | Jenbacher Werke Ag | Ignition plug |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5196935A (en) * | 1975-02-21 | 1976-08-25 |
-
1987
- 1987-12-17 JP JP32104587A patent/JPH01161690A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5196935A (en) * | 1975-02-21 | 1976-08-25 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0334283A (en) * | 1989-02-21 | 1991-02-14 | Jenbacher Werke Ag | Ignition plug |
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