JPH01289085A - Combustion method by ignition plug for internal combustion engine - Google Patents
Combustion method by ignition plug for internal combustion engineInfo
- Publication number
- JPH01289085A JPH01289085A JP2308089A JP2308089A JPH01289085A JP H01289085 A JPH01289085 A JP H01289085A JP 2308089 A JP2308089 A JP 2308089A JP 2308089 A JP2308089 A JP 2308089A JP H01289085 A JPH01289085 A JP H01289085A
- Authority
- JP
- Japan
- Prior art keywords
- fuel concentration
- center electrode
- electrode
- gas
- spark
- 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 10
- 238000009841 combustion method Methods 0.000 title claims description 5
- 239000000446 fuel Substances 0.000 claims abstract description 79
- 238000004070 electrodeposition Methods 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 6
- 238000003892 spreading Methods 0.000 abstract description 5
- 239000012212 insulator Substances 0.000 abstract description 2
- 239000000567 combustion gas Substances 0.000 abstract 1
- 239000003989 dielectric material Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052573 porcelain Inorganic materials 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003466 welding 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」
本発明は自動車等の内燃機関に使用するもので、点火機
能と共に燃焼装置を設けて燃焼速度を向上して省燃費効
果を得る内燃機関用点火栓による燃焼方法に関するもの
である。Detailed Description of the Invention "Industrial Application Field" The present invention is used in internal combustion engines such as automobiles, and is intended for use in internal combustion engines that are equipped with an ignition function and a combustion device to improve the combustion speed and save fuel. This relates to a combustion method using a spark plug.
「従来の技術」
従来、特願昭53−121107号、米国特44019
15号などにおいて、中心電極の先端に対向させて接地
電極を備え、該接地電極は点火ガスがスパーク部から、
ピストン側に向って流れやす(するために、1個以上の
垂直孔を有すると共に、該電極の長さ方向に沿って単一
の細長い孔を設け、あるいは1個以上の小孔を間隔をお
いて設け、そしてこの孔に隣接する部位は外側と下方に
向いテーパにしてガスの流れが集中すると共に加速され
る技術を開発した。"Prior art" Previously, Japanese Patent Application No. 121107/1983, US Pat. No. 44019
In No. 15, etc., a ground electrode is provided opposite to the tip of the center electrode, and the ground electrode is connected to the ignition gas from the spark part.
To facilitate flow toward the piston, the electrode may have one or more vertical holes and a single elongated hole along the length of the electrode, or one or more small holes spaced apart. We developed a technology in which the gas flow is concentrated and accelerated by tapering the area adjacent to the hole outward and downward.
「発明が解決しようとする問題点」
前記従来技術はそれなりに効果を有するものであるが、
その技術では平板状の接地電極の長尺側端部を折曲げて
燃料集中部を形成していたので、接地電極の長尺方向と
これに直交する方向とではガスの延焼速度が相違し易く
、前記ガス孔の大きさ並びに燃料集中部両側斜面の角度
及び面積の設計製作を容易に行い得ないと共に、内燃機
関のシリンダ排気量に応じて延焼ガスの乱流化並びにガ
ス延焼速度の高速化を容易に図り得ない等の問題があっ
た。“Problems to be solved by the invention” Although the above-mentioned conventional techniques are effective to some extent,
In that technology, the long side end of a flat ground electrode was bent to form a fuel concentration area, so the rate of gas fire spread was likely to be different between the long direction of the ground electrode and the direction perpendicular to this. However, it is not easy to design and manufacture the size of the gas hole and the angle and area of the slopes on both sides of the fuel concentration part, and the flame spread gas becomes turbulent and the gas fire spread speed increases depending on the cylinder displacement of the internal combustion engine. There were problems such as not being able to easily achieve this.
「問題点を解決するための手段」
然るに、本発明は、中心電極先端に接地電極を対設させ
、これらの間にスパークギャップを形成する一方、中心
電極先端に対向する接地電極位置でスパーク発生側とピ
ストン側とに連通させるトンネル形の燃料集中部を設け
、燃料集中部のスパーク発生側開口を中心電極先端に対
向配置させ、スパークギャップに発生する火炎核を第1
の種火として燃料集中部のスパーク発生側開口の未燃焼
ガスを燃焼させると共に、燃料集中部のピストン側開口
からの延焼ガスを第2の種火としてピストン側未燃焼ガ
スを燃焼させるようにしたことを特徴とするものである
。``Means for Solving the Problems'' However, in the present invention, a ground electrode is provided opposite to the tip of the center electrode, and a spark gap is formed between them, while a spark is generated at the position of the ground electrode opposite to the tip of the center electrode. A tunnel-shaped fuel concentration part is provided that communicates with the side and the piston side, and the spark generation side opening of the fuel concentration part is arranged opposite to the tip of the center electrode, so that the flame kernel generated in the spark gap is connected to the first
The unburned gas at the spark generation side opening of the fuel concentration section is used as a pilot flame, and the unburnt gas from the piston side opening of the fuel concentration section is used as a second pilot flame to burn the unburned gas on the piston side. It is characterized by this.
「作 用」
従って、トンネル形の燃料集中部の一端側に火2の種火
として燃料集中部から突出する延焼ガスを中心電極軸芯
線延長方向に突出させ得、従来のような中心電極軸芯線
と直交する方向に燃料集中部を設けて延焼ガスを形成す
る方法に比べ、極めて伝播加速度が大きく、しかも強力
な延焼火力を有する延焼ガスを第2の種火として容易に
得られるものである。``Function'' Therefore, it is possible to make the flame spread gas protruding from the fuel concentration part as a pilot flame of the fire 2 to one end side of the tunnel-shaped fuel concentration part in the direction of extension of the center electrode axis, and to avoid the conventional center electrode axis line. Compared to the method of forming a spread gas by providing a fuel concentration part in a direction perpendicular to the direction, the spread gas having an extremely high propagation acceleration and a strong fire spread fire power can be easily obtained as a second pilot flame.
また、中心電極軸芯線と略直交する方向に燃料集中部の
一部を拡張し、燃料集中部に発生する延焼ガス量を増量
するようにしたもので、燃料集中部の中心電極軸芯線方
向の距離を短縮しても燃料集中部から希望する延焼ガス
量を容易に得られると共に、シリンダ排気量などに応じ
て燃料集中部からの延焼ガス量を容易に増量し得るもの
である。In addition, a part of the fuel concentration section is expanded in a direction substantially perpendicular to the center electrode axis, increasing the amount of flame spread gas generated in the fuel concentration section. Even if the distance is shortened, the desired amount of spread gas can be easily obtained from the fuel concentration section, and the amount of spread gas from the fuel concentration section can be easily increased in accordance with the cylinder displacement and the like.
また、中心電極軸芯線と略直交する方向に燃料集中部の
一部を開放させ、中心電極軸芯線方向並びに略直抗する
方向のピストン側に燃料集中部の延焼ガスを突出させる
ようにしたもので、燃料集中部に発生する延焼ガスをピ
ストン側複数方向に分岐して膨出させ得、燃料集中部に
発生する延焼ガスの伝播効率並びに延焼機能などを容易
に向上させ得るものである。In addition, a part of the fuel concentration part is opened in a direction substantially perpendicular to the center electrode axis line, and the spread gas in the fuel concentration part is made to protrude toward the piston side in the direction of the center electrode axis line and in a direction substantially perpendicular to the center electrode axis line. The flame spread gas generated in the fuel concentrated portion can be branched and bulged in multiple directions on the piston side, and the propagation efficiency and fire spreading function of the flame spread gas generated in the fuel concentrated portion can be easily improved.
「実施例」 以下本発明の実施例を図面に基づいて詳述する。"Example" Embodiments of the present invention will be described in detail below based on the drawings.
第1図は要部断面図、第2図は全体図、第3図は第1図
のA−A線視図であり、内燃機関のエンジンブロックに
螺着固定する導電金属製固定体(1)と、その固定体(
11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)を連結する
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)のエンジン挿入端に支柱部材(5
)を介して接地電極(6)を一体固定する。Fig. 1 is a cross-sectional view of the main part, Fig. 2 is an overall view, and Fig. 3 is a view taken along line A-A in Fig. 1. ) and its fixed body (
Ceramic electrical insulator (2) that embeds and supports the intermediate part in 11
Equipped with. A center electrode (4) connecting the terminal (3) to one end is fixedly supported on the insulator (2), and a strut member (5) is attached to the engine insertion end of the fixed body (1).
) to integrally fix the ground electrode (6).
前記接地電極(6)を中空の円錐台形状に形成し、中心
電極(4)の軸芯延長線上でこの先端に前記接地電極(
6)を対向させると共に、その接地電極(6)の小径側
を前記中心電極先端に近接させてスパーク発生側(月を
形成している。The ground electrode (6) is formed into a hollow truncated cone shape, and the ground electrode (6) is attached to the tip of the center electrode (4) on the axial extension line of the center electrode (4).
6) are opposed to each other, and the small diameter side of the ground electrode (6) is brought close to the tip of the center electrode to form the spark generation side (the moon).
さらに、中空の円錐台形状の接地電極(6)の小径側を
急傾斜面に、またその接地電極(6)の大径側を緩傾斜
面とし、前記接地電極(6)をラッパ形に形成する。そ
して前記接地電極(6)の小径側端面にガス孔(8)を
開設し、そのガス孔(8)周囲で接地電極(6)のスパ
ーク発生側に凹面形のスパーク発生側斜面(9)を、ま
たその電極(6)のピストン側に凸面形のピストン側斜
面(lO)を夫々形成する。Further, the small diameter side of the hollow truncated cone-shaped ground electrode (6) is formed into a steeply sloped surface, and the large diameter side of the ground electrode (6) is formed into a gently sloped surface, so that the ground electrode (6) is formed into a trumpet shape. do. A gas hole (8) is formed on the small-diameter end face of the ground electrode (6), and a concave spark generation side slope (9) is provided around the gas hole (8) on the spark generation side of the ground electrode (6). , and a convex piston-side slope (lO) is formed on the piston side of the electrode (6).
段部(11)を形成すると共に、前記支柱部材(5)を
平板形に形成し、前記接地電極(6)の大径側端縁に等
間隔に一端を連結する4本の支柱部材(5)・・・を同
一方向に同一角度に捩り形成し、中心電極(4)とガス
孔(8)間の起爆点に対してこれに対向する支柱部材(
5)内面を傾斜させることにより、その起爆点で点火し
て燃焼し膨張した延焼ガスを支柱部材(5)により渦巻
状に拡散させ、延焼ガス乱流作用によりガス延焼速度を
高めると同時に、均一なガスの延焼を得られるように構
成している。In addition to forming a stepped portion (11), the support member (5) is formed into a flat plate shape, and four support members (5) are connected at equal intervals to the large diameter side edge of the ground electrode (6). )... are twisted in the same direction and at the same angle, and a support member (
5) By sloping the inner surface, the spread gas that ignites at the detonation point, burns, and expands is spread in a spiral shape by the support member (5), and the turbulent flow of the spread gas increases the speed of gas spread, and at the same time it spreads uniformly. The structure is designed to ensure a good gas fire spread.
さらに前記支持部材(5)一端を固定体(1)のエンジ
ン挿入端面に一体固定すると共に、接地電極(6)の大
径側外形をその固定体(11のエンジン挿入端面と路間
−大きさに形成し、また前記支持部材(5)中間を折曲
形成してこの折曲部(12)を中心電極(4)方向に突
出させ、その折曲部(12)を伸縮させて支持部材(5
)の長さを変更し、前記ガス孔(8)を中心電極(4)
先端に対してこの軸芯延長線上で略平行に接離移動させ
、接地電極(6)の取付角度を変更することなくこれと
中心電極(4)の間に形成するスパークギャブ(7)を
調節設定するように構成している。Furthermore, one end of the support member (5) is integrally fixed to the engine insertion end surface of the fixed body (1), and the large diameter side outer shape of the ground electrode (6) is fixed to the engine insertion end surface of the fixed body (11). The supporting member (5) is formed by bending the middle part thereof so that the bent part (12) protrudes toward the center electrode (4), and expanding and contracting the bent part (12) to form the supporting member (5). 5
) and connect the gas hole (8) to the center electrode (4).
The spark gab (7) formed between the ground electrode (6) and the center electrode (4) can be adjusted by moving the spark gab (7) toward and away from the tip approximately parallel to the extension line of this axis without changing the mounting angle of the ground electrode (6). Configured to set.
次いで、前記中心電極(4)の軸芯延長線上に接地電極
(6)のガス孔(8)中心を位置させ、前記ガス孔(8
)よりも若干小形でこれと相似する形状に中心電極(4
)先端面を形成し、前記ガス孔(8)の開口縁と中心電
極(4)先端面の外周縁との間にスパークを円筒状に発
生させ、そのガス孔(8)の開口範囲内で常にスパーク
を発生させることにより、そのガス孔(8)を介して接
地電極(6)のピストン側の点火延焼を最短距離で行え
るように構成している。Next, the center of the gas hole (8) of the ground electrode (6) is located on the axial extension line of the center electrode (4), and the gas hole (8)
) is slightly smaller than the center electrode (4) and has a similar shape.
) A tip surface is formed, and a spark is generated in a cylindrical shape between the opening edge of the gas hole (8) and the outer peripheral edge of the tip surface of the center electrode (4), and within the opening range of the gas hole (8). By constantly generating sparks, the structure is such that ignition and fire can be spread to the piston side of the ground electrode (6) through the gas hole (8) over the shortest distance.
さらに、第1図から明らかなように、接地電極(6)の
ピストン側斜面(10)で囲む空間で燃料集中部(13
)を形成するものであり、中心電極(4)先端に接地電
極(6)を対設させ、これらの間にスパークギャップ(
7)を形成する一方、中心電極(4)先端に対向する接
地電極(6)位置でスパーク発生側とピストン側とに連
通させるトンネル形の燃料集中部(13)を設け、燃料
集中部(13)のスパーク発生側開口を中心電極(4)
先端に対向配置させ、スパークギャップ(7)に発生す
る火炎核を第1の種火として燃料集中部(13)のスパ
ーク発生側開口の未燃焼ガスを燃焼させると共に、燃料
集中部(13)のピストン側開口からの延焼ガスを第2
の種火としてピストン側未燃焼ガス燃焼させるものであ
る。Furthermore, as is clear from FIG. 1, in the space surrounded by the piston-side slope (10) of the ground electrode (6),
), a ground electrode (6) is placed opposite the tip of the center electrode (4), and a spark gap (
7), and a tunnel-shaped fuel concentration part (13) that communicates with the spark generation side and the piston side at the position of the ground electrode (6) opposite to the tip of the center electrode (4). ) with the spark generation side opening as the center electrode (4)
The flame kernel generated in the spark gap (7) is used as a first pilot flame to burn the unburned gas in the spark generation side opening of the fuel concentration part (13), and The flame spread gas from the piston side opening is
The unburned gas on the piston side is burned as a pilot flame.
而して、ターミナル(3)に通電することにより、スパ
ークギャップ(7)にスパークが発生して火炎核を形成
すると共に、その火炎核を第1の種火として燃料集中部
(13)の一端側未燃焼ガスを燃焼させ、燃料集中部(
13)内の未燃焼ガスを延焼させ、燃料集中部の他端側
から延焼ガスを突出させて第2の種火とし、シリンダ内
の未燃焼ガスを燃焼させ、ピストンの爆発工程を行わせ
るものである。By energizing the terminal (3), a spark is generated in the spark gap (7) to form a flame kernel, and the flame kernel is used as a first pilot flame to burn at one end of the fuel concentration section (13). The unburned gas on the side is combusted and the fuel concentration section (
13) The unburned gas inside the cylinder is spread, and the spread gas is made to protrude from the other end of the fuel concentration part to serve as a second pilot flame, which burns the unburned gas inside the cylinder and causes the piston to explode. It is.
さらに第4図乃至第6図は上記支柱部材(5)の変形例
を示すもので、第4図に示すように、1本の支柱部材(
5)で接地電極(6)を支持することにより、スパーク
発生側斜面(9)による延焼ガス拡散効率を向上させる
ことができる。さらに第5図の如く、2本の支柱部材(
5) (51で接地電極(6)を支持することにより、
中心電極(4)の軸芯延長線上に接地電極(6)を正確
に最適姿勢で支持することができ、接地電極(6)の取
付角度を変更することなくスパークギャブ(7)の調節
を行える。また第6図の如(、等間隔に設ける3本の支
柱部材(5)・・・で接地電極(6)を支持することに
より、スパーク発生側斜面(9)による延焼ガス拡散効
率を向上させることができると共に、支柱部材(5)・
・・の延焼ガス乱流作用も充分に得られるものである。Furthermore, FIGS. 4 to 6 show modified examples of the above-mentioned support member (5), and as shown in FIG.
By supporting the ground electrode (6) with 5), the flame spread gas diffusion efficiency by the spark generation side slope (9) can be improved. Furthermore, as shown in Fig. 5, two support members (
5) (By supporting the ground electrode (6) at 51,
The ground electrode (6) can be accurately supported in an optimal posture on the axial extension of the center electrode (4), and the spark gab (7) can be adjusted without changing the mounting angle of the ground electrode (6). . In addition, by supporting the ground electrode (6) with three pillar members (5) provided at equal intervals as shown in Fig. 6, the fire spread gas diffusion efficiency by the slope (9) on the spark generation side can be improved. In addition to being able to
The turbulent flow effect of the flame spread gas can also be sufficiently obtained.
さらに第7図は上記中心電極(4)及び接地電極(6)
の変形例を示すもので、真円形のガス孔(8)に対しこ
れにより若干小径の円柱頭(4a)を中心電極(4)先
端に設け、その円柱頭(4a)先端とガス孔(8)開口
縁との間にスパークギャブ(7)を形成すると共に、第
1図に示す凹面形のスパーク発生側斜面(9)並びに凸
面形のピストン側斜面(lO)に代え、前記各斜面(9
1(101を偏平に形成し、ピストン側斜面(lO)で
囲む燃料集中部(13)体積を太き(形成し、ピストン
側斜面(10)におけるガス延焼速度を比例変化させる
ものである。Furthermore, Figure 7 shows the center electrode (4) and the ground electrode (6).
This shows a modification of the perfectly circular gas hole (8), in which a cylinder head (4a) with a slightly smaller diameter is provided at the tip of the center electrode (4), and the cylinder head (4a) tip and the gas hole (8) ) A spark gab (7) is formed between the opening edge and the concave spark generation side slope (9) and the convex piston side slope (lO) shown in FIG.
1 (101) is formed flat, and the volume of the fuel concentration part (13) surrounded by the piston-side slope (10) is thickened (formed), thereby proportionally changing the gas spread rate on the piston-side slope (10).
さらに第8図乃至第10図は上記実施例と同様の構造並
びに作用を有する変形例を示すもので、接地電極(6)
のガス溜り段部(illを左右両端縁まで延設し、この
段部(11)左右端部に支柱部材(5)(5)を一体連
設させると共に、前記段部(111の長尺側縁にスパー
ク発生側斜面(9)とピストン側斜面(lO)を形成し
、ピストン側斜面(lO)はガス溜り段部(11)に接
して急斜面とし端縁は緩傾斜面として半円形に形成する
。さらに固定体(11のエンジン挿入端面の外形より若
干小さく、またその端面内孔よりも若干大きく、前記接
地電極(6)の平面外径を形成すると共に、前記段部(
11)の長手方向に長い長円形にガス孔(8)を形成し
、そのガス孔(8)よりも若干小さい長円形に中心電極
(4)先端面を形成している。Furthermore, FIGS. 8 to 10 show modified examples having the same structure and operation as the above embodiment, in which the ground electrode (6)
A gas reservoir stepped portion (ill) is extended to both left and right edges, and strut members (5) (5) are integrally connected to the left and right ends of this stepped portion (11), and the long side of the stepped portion (111) is A spark generation side slope (9) and a piston side slope (lO) are formed on the edge, and the piston side slope (lO) is a steep slope in contact with the gas reservoir step (11), and the edge is formed into a semicircle with a gentle slope. Furthermore, the fixed body (11) is slightly smaller than the outer diameter of the engine insertion end surface and slightly larger than the inner hole of the end surface, and forms the planar outer diameter of the ground electrode (6), and the stepped portion (
11) A gas hole (8) is formed in an oval shape elongated in the longitudinal direction, and the tip surface of the center electrode (4) is formed in an oval shape slightly smaller than the gas hole (8).
また、対向する一対のピストン側斜面(101(101
間に燃料集中部(13)を設けたものであり、中心電極
(4)軸芯線と略直交する方向に燃料集中部(13)の
一部を拡張し、燃料集中部(13)に発生する延焼ガス
量を増量すると共に、中心電極(4)軸芯線と略直交す
る方向に燃料集中部(13)の一部を開放させ、中心電
極(4)軸芯線方向並びに略直交する方向のピストン側
に燃料集中部(13)延焼ガスを突出させ、その延焼ガ
スを第2の種火としてシリンダ内未燃焼ガスを燃焼させ
、ピストンの爆発工程を行わせるものである。In addition, a pair of opposing piston side slopes (101 (101
A fuel concentrated portion (13) is provided in between, and a portion of the fuel concentrated portion (13) is expanded in a direction substantially perpendicular to the axis of the center electrode (4), and the fuel is generated in the fuel concentrated portion (13). At the same time as increasing the amount of spread gas, a part of the fuel concentrating portion (13) is opened in a direction substantially perpendicular to the axis of the center electrode (4), and the piston side is opened in the direction substantially perpendicular to the axis of the center electrode (4). The flame spread gas is made to protrude from the fuel concentration part (13), and the unburned gas in the cylinder is combusted using the flame spread gas as a second pilot flame, thereby causing the explosion process of the piston to occur.
さらに点火されてスパーク発生側斜面(9)に沿って延
焼するガスも燃焼し膨張して発生した高圧力はその接す
るスパーク発生側斜面(9)の角度に応じて強力に反発
して拡散しその両側方に延焼ガスの乱流を起こすもので
ある。Furthermore, the gas that is ignited and spreads along the spark generation side slope (9) also burns and expands, and the high pressure generated is strongly repelled and diffused according to the angle of the spark generation side slope (9) that it touches. This causes a turbulent flow of fire-spreading gas on both sides.
さらに第11図及び第12図は他の実施例を示すもので
、第9図の実施例においてガス溜り段部(illを中心
にこの両側に対称にスパーク発生側斜面(9)を凹面形
に、またピストン側斜面(lO)を凸面形に夫々形成し
ていたが、これに代え、前記各斜面(9) (10)を
偏平としそのピストン方向の端縁を半円形に形成すると
共に、第10図のように長円形のガス孔(8)に対して
先端面がこれより若干小径の長円柱頭(4a)を中心電
極(4)先端に設けている。この接地電極の製造はスパ
ーク発生側斜面及びピストン側斜面が偏平であってその
加工は折曲作業が主であって容易に大量生産をすること
ができる。Furthermore, FIGS. 11 and 12 show other embodiments, and in the embodiment shown in FIG. 9, the slopes (9) on the spark generation side are formed in a concave shape symmetrically on both sides of the gas reservoir step (ill). In addition, the piston side slopes (lO) were each formed in a convex shape, but instead of this, each of the slopes (9) and (10) were made flat, and the edge in the piston direction was formed into a semicircular shape. As shown in Figure 10, an elongated cylindrical head (4a) whose end surface has a slightly smaller diameter than the oval gas hole (8) is provided at the tip of the center electrode (4). The side slopes and the piston side slopes are flat, and the processing thereof is mainly a bending operation, so that mass production can be easily carried out.
下記表1において、第11図及び第12図の実施例に示
す構造の試作品を使用した試走実験結果を示す。Table 1 below shows the results of a trial run experiment using a prototype having the structure shown in the embodiment shown in FIGS. 11 and 12.
表 1
試走実験の条件
試走実験車・・・普通貨物自動車
(1300cc・4サイクル・4気筒)試走地域・・・
大阪市街地の路間−コース試走車の載貨状態・・・空車
試走の速度・・・最高60KM/H(平均40〜50K
M/旧試走時の調整・・・点火時期調整、燃料供給量調
整計測方法・・・燃料タンクを満タンクにして後、走行
キロ数とタンク減量分の補給
量を測り、lβ当りの走行キロ数
を算出。Table 1 Test run test conditions Test run test vehicle... Ordinary freight vehicle (1300cc, 4 cycle, 4 cylinder) Test run area...
Road-course test run in Osaka city area Loaded state of vehicle...Empty vehicle test run speed...Maximum 60KM/H (Average 40-50K
M/Adjustment during old test run: Ignition timing adjustment, fuel supply amount adjustment Measuring method: After filling the fuel tank, measure the number of kilometers traveled and the amount of replenishment for the tank reduction, and calculate the number of kilometers traveled per lβ. Calculate the number.
第13図乃至第15図は、第11図と第12図に示す実
施例の顕彰を示すものであって、第11図及び第12図
においては接地電極(4)の各斜面(9) (10)は
偏平に形成されているが、ガス溜り段部(illの両側
に対称に設けた側斜面(9) (101の端縁中央部を
スパーク発生側に押出し湾曲成形すると共に、スパーク
発生側斜面(9)を球状凸面形に形成したものであって
、これにより接地電極(4)のピストン側斜面(10)
の両側斜面端縁間の混合気体積を増すと共に、スパーク
発生側斜面(9)に沿って延焼するガスが燃焼し膨張し
て発生した高圧力はその接するスパーク発生側斜面(9
)の球状凸面の角度に応じて強力に反発して放射状に拡
散する一方、前記斜面(9) (10)の端縁中央部を
スパーク発生側に押出し湾曲成形したことにより、延焼
ガスがスパーク発生側斜面(9)の角度に応じて反発す
る方向が更に拡大されて乱流の効果を増すことが出来る
と同時に、燃料集中部(13)からのピストン側方向へ
のガス延焼速度を一層増速し得るものである。13 to 15 illustrate the embodiments shown in FIGS. 11 and 12. In FIGS. 11 and 12, each slope (9) of the ground electrode (4) ( 10) is formed flat, but the side slopes (9) (101) provided symmetrically on both sides of the gas reservoir step (ill) are extruded and curved from the center of the edge toward the spark generation side. The slope (9) is formed into a spherical convex shape, which allows the slope (10) on the piston side of the ground electrode (4) to
At the same time, the gas that spreads along the spark generation side slope (9) burns and expands, and the high pressure generated is transferred to the adjacent spark generation side slope (9).
) is strongly repelled according to the angle of the spherical convex surface and diffuses radially, while the central part of the edge of the slope (9) (10) is extruded and curved toward the spark generation side, so that the spreading gas can generate sparks. The direction of repulsion is further expanded according to the angle of the side slope (9), increasing the effect of turbulence, and at the same time further increasing the speed of gas spread from the fuel concentration part (13) toward the piston side. It is possible.
さらに、第16図及び第17図は、第1図の変形例を示
すものであり、長尺バイブを適当長さに輪切りにした形
状に接地電極(6)を形成すると共に、固定体mに基端
側を固定させる支柱部材(5)先端を内方に折曲げて接
地電極(6)外周面に熔接固定したもので、中心電極(
4)先端に接地電極(6)を対設させ、これらの間にス
パークギャップ(7)を形成する一方、中心電極(4)
先端に対向する接地電極(6)位置でスパーク発生側(
14)とピストン側(15)とに連通させるトンネル形
の燃料集中部(13)を設け、燃料集中部(13)のス
パーク発生側開口(16)を中心電極(4)先端に対向
配置させ、スパークギャップ(7)に発生する火炎核を
第1の種火として燃料集中部(13)のスパーク発生側
開口(16)の未燃焼ガスを燃焼させると共に、燃料集
中部(13)のピストン側開口(17)からの延焼ガス
を第2の種火としてピストン側未燃焼ガスを燃焼させる
ものである。Furthermore, FIGS. 16 and 17 show a modification of FIG. 1, in which the ground electrode (6) is formed in the shape of a long vibrator cut into appropriate lengths, and the ground electrode (6) is attached to the fixed body m. The tip of the strut member (5) that fixes the proximal end is bent inward and welded to the outer circumferential surface of the ground electrode (6).
4) A ground electrode (6) is provided oppositely at the tip, and a spark gap (7) is formed between them, while a center electrode (4)
Spark generation side (
14) and the piston side (15) are provided, and the spark generation side opening (16) of the fuel concentration part (13) is arranged opposite to the tip of the center electrode (4), The flame kernel generated in the spark gap (7) is used as a first pilot flame to burn the unburned gas in the spark generation side opening (16) of the fuel concentration part (13), and the piston side opening of the fuel concentration part (13). (17) The unburned gas on the piston side is combusted by using the spread gas from (17) as a second pilot flame.
さらに、円板の中心に端面円形の燃料集中部(13)を
開設して接地電極(6)を形成すると共に、中心電極(
4)軸芯線と略平行に延設させた支柱部材(5) (5
)先端に接地電極(6)外周の耳部(6a) (6b)
を熔接固定させたもので、接地電極(6)に形成する燃
料集中部(13)のピストン側開口(17)に末広がり
形状の延焼拡散部(18)を設けたものである。Furthermore, a fuel concentration part (13) with a circular end face is opened at the center of the disk to form a ground electrode (6), and a center electrode (
4) Support member (5) extending substantially parallel to the axis (5)
) Ground electrode at the tip (6) Ears on the outer periphery (6a) (6b)
A fire spreading/diffusion part (18) is provided in the piston side opening (17) of the fuel concentrating part (13) formed in the ground electrode (6) by welding.
さらに、第18図及び第19図は、第16図の変形例で
あり、燃料集中部(13)のピストン側開口(1月に末
広がり形の拡散管(19)の小径側を熔接固定させ、こ
の拡散管(19)内孔によって延焼拡散部(18)を形
成したものである。Furthermore, FIGS. 18 and 19 are modifications of FIG. 16, in which the piston side opening of the fuel concentration part (13) (in January, the small diameter side of the diffuser tube (19) with a widening shape at the end is welded and fixed, The inner hole of this diffusion tube (19) forms a fire spread diffusion section (18).
さらに、第20図及び第21図は、第8図及び第16図
の変形例であり、燃料集中部(13)に連通させる燃料
増量部(20)を接地電極(6)に形成し、燃料増量部
(20)により燃料集中部(7)の一部を中心電極(4
)軸芯線と略直交する方向に拡張させたもので、中心電
極(4)軸芯線と略直交する方向に燃料集中部(13)
の一部を拡張し、燃料集中部(13)に発生する延焼ガ
ス量を増殖するものである。Furthermore, FIGS. 20 and 21 are modifications of FIGS. 8 and 16, in which a fuel increasing portion (20) communicating with the fuel concentration portion (13) is formed in the ground electrode (6), and A part of the fuel concentrating part (7) is connected to the center electrode (4) by the increasing part (20).
) The center electrode (4) is expanded in a direction substantially perpendicular to the axial center line, and the fuel concentration section (13) is expanded in a direction substantially perpendicular to the axial center line.
This is to expand a part of the fuel concentration area (13) and increase the amount of spread gas generated in the fuel concentration area (13).
さらに、第22図及び第23図は、第8図及び第20図
の変形例であり、燃料集中部(13)を中心電極(4)
軸芯線と略直交する方向に拡張させた燃料増量部(20
)を介し、燃料集中部(13)を接地電極(6)外側方
に開口させる開放部(21) (21)を設けると共に
、前記開放部(21)を形成する接地電極(6)の対向
する側端面(22) (221を底面視への字形に形成
したもので、中心電極(4)軸芯線と略直交する方向に
燃料集中部(13)の一部を開放させ、中心電極(4)
軸芯線方向並びに略直交する方向のピストン側(15)
に燃料集中部(13)の延焼ガスを突出させるものであ
る。Furthermore, FIGS. 22 and 23 are modifications of FIGS. 8 and 20, in which the fuel concentration part (13) is connected to the center electrode (4).
A fuel increasing part (20
), an opening part (21) (21) is provided which opens the fuel concentration part (13) to the outside of the ground electrode (6), and the ground electrode (6) forming the opening part (21) faces the ground electrode (6). The side end surface (22) (221 is shaped like a letter when viewed from the bottom), and a part of the fuel concentration part (13) is opened in a direction substantially perpendicular to the axis of the center electrode (4), and the center electrode (4)
Piston side (15) in the axial direction and in the substantially orthogonal direction
This causes the spread gas in the fuel concentration part (13) to protrude.
さらに、第24図及び第25図は、第22図の変形例を
示すもので、燃料集中部(13)に連設させる燃料増量
部(20)両側に燃料集中部形成面(23)(23)を
設けると共に、矩形平板により接地電極(6)を形成し
、接地電極(6)基端を固定体(1)に直接溶接固定さ
せる一方、燃料集中部(13)及び燃料増量部(20)
及び開放部(21)を対向する接地電極(61(6)先
端側の間で形成したものである。Furthermore, FIGS. 24 and 25 show a modification of FIG. 22, in which fuel concentration part forming surfaces (23) (23 ), a ground electrode (6) is formed by a rectangular flat plate, and the base end of the ground electrode (6) is directly welded and fixed to the fixed body (1), while a fuel concentration part (13) and a fuel increase part (20) are provided.
and an open part (21) is formed between the opposing ground electrodes (61 (6) on the tip side).
「発明の効果」
以上実施例から明らかなように本発明は、中心電極(4
)先端に接地電極(6)を対設させ、これらの間にスパ
ークギャップ(7)を形成する一方、中心電極(4)先
端に対向する接地電極(6)位置でスパーク発生側とピ
ストン側とに連通させるトンネル形の燃料集中部(13
)を設け、燃料集中部(13)のスパーク発生側開口を
中心電極(4)先端に対向配置させ、スパークギャップ
(7)に発生する火炎核を第1の種火として燃料集中部
(13)のスパーク発生側開口の未燃焼ガスを燃焼させ
ると共に、燃料集中部(13)のピストン側開口からの
延焼ガスを第2の種火としてピストン側未燃焼ガスを燃
焼させるもので、トンネル形の燃料集中部(13)の一
端側に火炎核を延焼させるから、燃料集中部(13)中
間で抑圧された延焼ガスが他端側から噴出することにな
り、第2の種火として燃料集中部(13)から突出する
延焼ガスを中心電極(4)軸芯繰延長方向に突出させる
ことができ、従来のような中心電極(4)軸芯線と直交
する方向に燃料集中部(13)を設けて延焼ガスを形成
する方法に比べ、極めて伝播加速度が大きく、しかも強
力な延焼火力を有する延焼ガスを第2の種火として容易
に得ることができるものである。"Effects of the Invention" As is clear from the above embodiments, the present invention has a central electrode (4
) A ground electrode (6) is provided oppositely at the tip, and a spark gap (7) is formed between them, while a spark generation side and a piston side are connected at the position of the ground electrode (6) opposite to the tip of the center electrode (4). A tunnel-shaped fuel concentration section (13
), the spark generation side opening of the fuel concentration part (13) is arranged opposite to the tip of the center electrode (4), and the flame kernel generated in the spark gap (7) is used as the first pilot flame to connect the fuel concentration part (13). The unburned gas in the opening on the spark generation side is combusted, and the unburned gas on the piston side is combusted using the spread gas from the opening on the piston side of the fuel concentration part (13) as a second pilot flame. Since the flame kernel is allowed to spread to one end of the fuel concentration section (13), the flame spread gas suppressed in the middle of the fuel concentration section (13) is ejected from the other end, and the fuel concentration section (13) is used as a second pilot flame. The flame spread gas protruding from the center electrode (4) can be made to protrude in the extension direction of the center electrode (4) axis, and the fuel concentration part (13) is provided in the direction orthogonal to the center line of the center electrode (4) as in the conventional case. Compared to the method of forming a flame spread gas, the flame spread gas having an extremely large propagation acceleration and a strong flame spread firepower can be easily obtained as a second pilot flame.
また、中心電極(4)軸芯線と略直交する方向に燃料集
中部(13)の一部を拡張し、燃料集中部(13)に発
生する延焼ガス量を増量するようにしたもので、燃料集
中部(13)の中心電極(4)軸芯線方向の距離を短縮
しても燃料集中部(13)から希望する延焼ガス量を容
易に得ることができると共に、シリンダ排気量などに応
じて燃料集中部(13)からの延焼ガス量を容易に増量
することができるものである。In addition, a part of the fuel concentration part (13) is expanded in a direction substantially perpendicular to the axis of the center electrode (4) to increase the amount of spread gas generated in the fuel concentration part (13). Even if the distance in the axial direction of the center electrode (4) of the fuel concentration part (13) is shortened, the desired amount of flame spread gas can be easily obtained from the fuel concentration part (13), and the amount of fuel can be adjusted according to the cylinder displacement etc. This makes it possible to easily increase the amount of spread gas from the concentrated portion (13).
また、中心電極(4)軸芯線と略直交する方向に燃料集
中部(13)の一部を開放させ、中心電極(4)軸芯線
方向並びに略直抗する方向のピストン側に燃料集中部(
13)の延焼ガスを突出させるようにしたもので、燃料
集中部(13)に発生する延焼ガスをピストン側複数方
向に分岐して膨出させることができ、燃料集中部(13
)に発生する延焼ガスの伝播効率並びに延焼機能などを
容易に向上させることができるものである。In addition, a part of the fuel concentration part (13) is opened in a direction substantially perpendicular to the axis of the center electrode (4), and a fuel concentration part (
The flame spread gas generated in the fuel concentration part (13) can be branched and bulged in multiple directions on the piston side, and the flame spread gas generated in the fuel concentration part (13) can be made to protrude.
) can easily improve the propagation efficiency of the flame spread gas generated in the process and the fire spread function.
第1図は本発明の一実施例を示す要部断面図、第2図は
全体図、第3図は第1図のA−A線視図、第4図乃至第
25図は変形例を示す説明図である。
(4)・・・ 中 心 電 極(6)・・・
接 地 電 極(7)・・・ スパーク
ギャップ
(13)・・・ 燃料集中部
出願人 相 原 武 明
(ばか2名)
代理人 藤 原 忠 治−一第1
図
83図
第2図
l(6FIG. 1 is a sectional view of essential parts showing one embodiment of the present invention, FIG. 2 is an overall view, FIG. 3 is a view taken along line A-A in FIG. 1, and FIGS. 4 to 25 show modified examples. FIG. (4)... Center electrode (6)...
Grounding electrode (7)...Spark gap (13)...Fuel Concentration Department Applicant: Takeaki Aihara (2 idiots) Agent: Tadaharu Fujiwara - 1st
Figure 83 Figure 2 Figure l (6
Claims (3)
にスパークギャップを形成する一方、中心電極先端に対
向する接地電極位置でスパーク発生側とピストン側とに
連通させるトンネル形の燃料集中部を設け、燃料集中部
のスパーク発生側開口を中心電極先端に対向配置させ、
スパークギャップに発生する火炎核を第1の種火として
燃料集中部のスパーク発生側開口の未燃焼ガスを燃焼さ
せると共に、燃料集中部のピストン側開口からの延焼ガ
スを第2の種火としてピストン側未燃焼ガスを燃焼させ
るようにしたことを特徴とする内燃機関用点火栓による
燃焼方法。(1) A ground electrode is placed opposite the tip of the center electrode, and a spark gap is formed between them, while a tunnel-shaped fuel concentration is created in which the spark generation side and the piston side communicate with each other at the ground electrode position facing the tip of the center electrode. The spark generation side opening of the fuel concentration part is arranged opposite to the tip of the center electrode,
The flame kernel generated in the spark gap is used as a first pilot flame to burn the unburned gas at the spark generation side opening of the fuel concentration section, and the spread gas from the piston side opening of the fuel concentration section is used as a second pilot flame to burn the piston. A combustion method using a spark plug for an internal combustion engine, characterized in that side unburned gas is combusted.
一部を拡張し、燃料集中部に発生する延焼ガス量を増植
するようにしたことを特徴とする上記第1項記載の内燃
機関用点火栓による燃焼方法。(2) The method according to item 1 above, characterized in that a part of the fuel concentration section is expanded in a direction substantially perpendicular to the center electrode axis line to increase the amount of spread gas generated in the fuel concentration section. Combustion method using a spark plug for internal combustion engines.
一部を開放させ、中心電極軸芯線方向並びに略直交する
方向のピストン側に燃料集中部の延焼ガスを突出させる
ようにした上記第1項記載の内燃機関用点火栓による燃
焼方法。(3) A part of the fuel concentration section is opened in a direction substantially orthogonal to the center electrode axis line, and the spread gas in the fuel concentration section is made to protrude toward the piston side in the direction of the center electrode axis line and a direction substantially orthogonal to the center electrode axis line. A combustion method using a spark plug for an internal combustion engine according to item 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2308089A JPH01289085A (en) | 1989-02-01 | 1989-02-01 | Combustion method by ignition plug for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2308089A JPH01289085A (en) | 1989-02-01 | 1989-02-01 | Combustion method by ignition plug for internal combustion engine |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60147042A Division JPS628483A (en) | 1985-07-03 | 1985-07-03 | Fast combustor of ignition plug for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01289085A true JPH01289085A (en) | 1989-11-21 |
Family
ID=12100439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2308089A Pending JPH01289085A (en) | 1989-02-01 | 1989-02-01 | Combustion method by ignition plug for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01289085A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5090373A (en) * | 1990-11-30 | 1992-02-25 | Ryohei Kashiwara | Auxiliary device attachable to a convention spark plug |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5141141A (en) * | 1974-06-06 | 1976-04-06 | Esupaada Ansutaaruto | NAINENKIKANYOTENKASOCHI |
JPS5491644A (en) * | 1977-12-28 | 1979-07-20 | Takeaki Kashiwara | Ignition plug |
JPS60147042A (en) * | 1984-01-11 | 1985-08-02 | Nippon Denso Co Ltd | Air conditioner |
JPS6130989B2 (en) * | 1980-09-17 | 1986-07-17 | Showa Aircraft Ind | |
JPS628483A (en) * | 1985-07-03 | 1987-01-16 | 柏原 武明 | Fast combustor of ignition plug for internal combustion engine |
-
1989
- 1989-02-01 JP JP2308089A patent/JPH01289085A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5141141A (en) * | 1974-06-06 | 1976-04-06 | Esupaada Ansutaaruto | NAINENKIKANYOTENKASOCHI |
JPS5491644A (en) * | 1977-12-28 | 1979-07-20 | Takeaki Kashiwara | Ignition plug |
JPS6130989B2 (en) * | 1980-09-17 | 1986-07-17 | Showa Aircraft Ind | |
JPS60147042A (en) * | 1984-01-11 | 1985-08-02 | Nippon Denso Co Ltd | Air conditioner |
JPS628483A (en) * | 1985-07-03 | 1987-01-16 | 柏原 武明 | Fast combustor of ignition plug for internal combustion engine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5090373A (en) * | 1990-11-30 | 1992-02-25 | Ryohei Kashiwara | Auxiliary device attachable to a convention spark plug |
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