JPH0893477A - Shape of auxiliary combustion chamber of indirect injection gas engine - Google Patents
Shape of auxiliary combustion chamber of indirect injection gas engineInfo
- Publication number
- JPH0893477A JPH0893477A JP6226441A JP22644194A JPH0893477A JP H0893477 A JPH0893477 A JP H0893477A JP 6226441 A JP6226441 A JP 6226441A JP 22644194 A JP22644194 A JP 22644194A JP H0893477 A JPH0893477 A JP H0893477A
- Authority
- JP
- Japan
- Prior art keywords
- sub
- chamber
- shape
- gas engine
- section
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、副室式ガス機関の副室
形状に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sub chamber shape of a sub chamber type gas engine.
【０００２】[0002]
【従来の技術】図１１は従来の副室式ガス機関（例えば
希薄燃焼型ガスエンジン）の副室の断面図であり、図１
２はそのＢ−Ｂ矢視断面図である。2. Description of the Related Art FIG. 11 is a sectional view of a sub-chamber of a conventional sub-chamber type gas engine (for example, a lean-burn gas engine).
2 is a sectional view taken along the line BB.
【０００３】副室１Ａは連通路２Ａにより、複数の噴口
３Ａを介して主燃焼室４に連通されている。ここで、連
通路２Ａは小径の円筒形状に構成され、先端には噴口３
Ａが設けられている。そして、噴口３Ａの径方向は、主
燃焼室４での燃焼を配慮して決められている。The auxiliary chamber 1A is communicated with the main combustion chamber 4 by a communication passage 2A through a plurality of injection holes 3A. Here, the communication passage 2A is formed in a small-diameter cylindrical shape, and has a nozzle 3 at the tip.
A is provided. The radial direction of the injection port 3A is determined in consideration of combustion in the main combustion chamber 4.
【０００４】副室１Ａは断面直径が連通路２Ａより拡大
された円筒形で、その上下面の各隅部は、発生する縦渦
に対応した曲面（アール）形状にされている。図１１で
示す様に、圧縮行程において、図示しないピストンが上
昇することにより、混合気は図１１内の矢印で示す様
に、先端の噴口３Ａ（図１２も参照）から小径の連通路
２Ａに副室１Ａに向かって侵入し、該連通路２Ａにより
方向付けられ、副室１Ａの天井部に当たって反転し、副
室１Ａの内壁面形状に倣つて流れる。その結果、図１１
において複数の小さな矢印で示す様な縦渦が発生し、こ
の縦渦により、混合気の形成が促進されるのである。The sub-chamber 1A has a cylindrical shape whose cross-sectional diameter is larger than that of the communication passage 2A, and each of the upper and lower corners thereof has a curved surface (R) shape corresponding to the generated vertical vortex. As shown in FIG. 11, as the piston (not shown) rises in the compression stroke, the air-fuel mixture flows from the injection port 3A at the tip (see also FIG. 12) to the small-diameter communication passage 2A as shown by the arrow in FIG. It intrudes toward the sub chamber 1A, is directed by the communication passage 2A, hits the ceiling of the sub chamber 1A and is inverted, and flows along the shape of the inner wall surface of the sub chamber 1A. As a result, FIG.
Vertical vortices such as those indicated by a plurality of small arrows are generated in, and the formation of the air-fuel mixture is promoted by these vertical vortices.
【０００５】副室１Ａ内で着火されると、ガスは強力な
火炎ジェットとなって噴口３Ａから主燃焼室４に噴出さ
れ、主燃焼室４内を燃焼状態にするのである。こうして
希薄燃焼が達成され、ＮＯｘ等の有害排気を低減するこ
とができる。When ignited in the sub chamber 1A, the gas becomes a powerful flame jet and is ejected from the injection port 3A into the main combustion chamber 4 to bring the inside of the main combustion chamber 4 into a combustion state. In this way, lean combustion is achieved, and harmful exhaust such as NOx can be reduced.
【０００６】[0006]
【発明が解決しようとする課題】ここで主燃焼室に供給
される混合気を充分に希薄していくと、排気ガス中のＮ
Ｏｘ等は、その半分近くが副室で発生するようになる。
そのため、希薄化を進めて排気ガス中のＮＯｘを低減さ
せるためには、副室の容積を抑える（副室の容積を小さ
くする）ことが好適である。副室の容積が小さければ副
室で発生するＮＯｘの量も少なくなるからである。しか
し、副室を小さくすると、副室内の縦渦が弱まり、空気
とガスとがよく混合されず、火炎ジェットの生成が不良
となり、主燃焼室内の火炎伝播が不充分で不燃や失火が
起きる恐れがある。これに加えて、物理的な条件とし
て、副室１Ａの上部には、点火プラグやその他の部材を
設置するためには、直径の下限値を直径２８ｍｍ程度に
抑えなければならない、という制約が存在する。If the air-fuel mixture supplied to the main combustion chamber is sufficiently diluted, the N in the exhaust gas will be reduced.
Almost half of Ox will be generated in the sub chamber.
Therefore, it is preferable to suppress the volume of the sub chamber (to reduce the volume of the sub chamber) in order to reduce the NOx in the exhaust gas by promoting the dilution. This is because the smaller the volume of the sub chamber, the smaller the amount of NOx generated in the sub chamber. However, if the sub-chamber is made smaller, the longitudinal vortices in the sub-chamber will weaken, air and gas will not mix well, flame jet generation will be defective, and flame propagation in the main combustion chamber will be insufficient, causing incombustion or misfire. There is. In addition to this, as a physical condition, there is a constraint that the lower limit value of the diameter must be suppressed to about 28 mm in diameter in order to install the spark plug and other members in the upper portion of the sub chamber 1A. To do.
【０００７】これに対して従来技術では、副室の容積を
小さくして、副室内の縦渦を弱らせる事なく、しかも上
述した寸法的な制約をクリヤするために、図１３で示す
様に、副室内にテーパをつけ容積を減らす技術が提案さ
れた。しかし、このようなテーパ形の副室１では、連通
路２Ｂから副室１Ｂへ急激な断面積の変化がなく、図１
３の矢印で示すような流れを生じるので、該矢印から明
らかな様に、符号Ｘで示す部分では縦渦の形成が妨げら
れ、例えば濃いガスが滞留して火炎ジェットの生成が不
十分となったり、或いは、ＮＯｘが増大する等の欠点が
あった。On the other hand, in the prior art, the volume of the sub-chamber is made small so as not to weaken the longitudinal vortex in the sub-chamber and to clear the above-mentioned dimensional constraint, as shown in FIG. Then, the technique of tapering the sub-chamber and reducing the volume was proposed. However, in such a tapered sub-chamber 1, there is no sudden change in the cross-sectional area from the communication passage 2B to the sub-chamber 1B.
Since the flow indicated by the arrow 3 is generated, as is apparent from the arrow, the formation of the vertical vortex is hindered in the portion indicated by the reference symbol X, and for example, the dense gas is retained and the flame jet is insufficiently generated. Or, there is a defect that NOx increases.
【０００８】すなわち、副室の容積を小さくしてＮＯｘ
量を減少して、副室内の縦渦を弱らせる事なく、しかも
上述した寸法的な制約をクリヤすることが出来る技術が
従来から望まれていたが、その様な要請に応えることが
出来るような技術は未だに提案されていない。That is, the volume of the sub chamber is reduced to reduce NOx.
There has been a long-felt demand for a technique that can reduce the amount of the vortex in the sub chamber without weakening the vertical vortex, and can clear the above-mentioned dimensional constraints. Such a technique has not been proposed yet.
【０００９】本発明はその様な要請に鑑みて提案された
ものて、縦渦の形成を妨げずに副室の容積を低減して、
低ＮＯｘ化を図ったガス機関の副室形状の提供を目的と
している。The present invention has been proposed in view of such a demand, and reduces the volume of the sub chamber without hindering the formation of the vertical vortex,
The purpose is to provide a sub-chamber shape for a gas engine with low NOx.
【００１０】[0010]
【課題を解決するための手段】本発明の副室式ガス機関
の副室形状は、ガス機関の燃焼領域と副室とを連通する
連通路は、断面の径が比較的小さい円筒形に構成されて
おり、副室は、横断面及び縦断面が長方形をしており且
つ横断面の断面積が前記連通路の横断面の断面積よりも
大きい直方体形状に構成されている。According to the sub-chamber type of the sub-chamber type gas engine of the present invention, the communication passage for connecting the combustion region of the gas engine and the sub-chamber is formed in a cylindrical shape having a relatively small cross-sectional diameter. The sub-chamber has a rectangular parallelepiped cross section and a vertical cross section, and has a rectangular parallelepiped shape whose cross-sectional area is larger than that of the communication passage.
【００１１】ここで、前記副室の横断面は長方形で且つ
その四隅が面取りされた形状か、或いは、長方形で且つ
その四隅に曲面が形成された形状であるのが好ましい。Here, it is preferable that the sub-chamber has a rectangular cross-section with a rectangular shape and four corners chamfered, or a rectangular shape with curved surfaces formed at the four corners.
【００１２】また、前記副室の縦断面は、長方形で且つ
その四隅が面取りされた形状、長方形で且つその四隅が
面取りされており、さらに面取り部分の傾斜角度が上部
と下部とでは相違した形状、或いは、長方形で且つその
四隅に曲面が形成された形状、のいずれかであるのが好
ましい。Further, the vertical cross section of the sub-chamber has a rectangular shape with four corners chamfered, a rectangular shape with four corners chamfered, and a chamfered portion having different inclination angles between the upper part and the lower part. Alternatively, it is preferably either a rectangular shape and a curved surface formed at its four corners.
【００１３】本発明の実施に際して、前記連通路は通常
は副室の中央部に連通しているが、副室の横断面の端部
に連通している構造も好ましい。さらに、前記連通路
は、副室の横断面に対して通常は直交する様に連通して
いるが、傾斜して連通する様に構成するのも好ましい。In the practice of the present invention, the communication passage normally communicates with the central portion of the sub chamber, but a structure in which the communication passage communicates with the end portion of the cross section of the sub chamber is also preferable. Further, although the communication passage is normally communicated so as to be orthogonal to the cross section of the sub chamber, it is also preferable that the communication passage is configured so as to be inclined and communicate with each other.
【００１４】なお本発明では、副室の横断面の長さ及び
幅をそれぞれ２８ｍｍ及び１４ｍｍ以上に形成してい
る。In the present invention, the length and width of the cross section of the auxiliary chamber are 28 mm and 14 mm or more, respectively.
【００１５】[0015]
【作用】上記の様な構成を具備する本発明によれば、副
室の断面は概略直方体形状になり、従来技術の様な３次
元的或いは立体的な縦渦ではなく、平面的或いは２次元
的な縦渦が形成される。そして、概略直方体形状に形成
された本発明の副室は、該平面的（２次元的）な縦渦の
形成を妨げることがない。ここで、円筒形状の従来の副
室に比較して、本発明の直方体形状の副室はその容積が
小さいので、ＮＯｘを低減することが可能である。副室
の容積を低減でき、混合気の形成が促進され、良好な火
炎ジェットが得られて希薄燃焼が達成される。According to the present invention having the above-mentioned structure, the cross section of the sub chamber becomes a substantially rectangular parallelepiped shape, and is not a three-dimensional or three-dimensional vertical vortex as in the prior art, but a plane or two-dimensional. Vertical vortices are formed. The sub-chamber of the present invention formed in a substantially rectangular parallelepiped shape does not hinder the formation of the planar (two-dimensional) vertical vortex. Here, since the rectangular parallelepiped sub-chamber of the present invention has a smaller volume than the conventional sub-chamber having a cylindrical shape, it is possible to reduce NOx. The volume of the sub chamber can be reduced, the formation of air-fuel mixture is promoted, a good flame jet is obtained, and lean combustion is achieved.
【００１６】[0016]
【実施例】以下、図面を参照して本発明の実施例を説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１７】図１、図２において、副室１の形状は直方
体とされ、図１の縦断面形状は、前記従来例の図１１に
形状と変っていないが、Ａ−Ａ矢視断面は図２に示すよ
うに長方形になり、断面積が低減されている。1 and 2, the auxiliary chamber 1 has a rectangular parallelepiped shape, and the vertical cross-sectional shape of FIG. 1 is the same as that of the conventional example shown in FIG. It has a rectangular shape as shown in FIG. 2 and has a reduced cross-sectional area.
【００１８】すなわち、従来は副室１の断面直径は点火
プラグ等の配設のため、２８ｍｍが下限であったのに対
して、この実施例では長方形になって、断面縦寸法ａは
最小を１４ｍｍ、横寸法ｂは最小を２８ｍｍとすること
ができ、副室容積を低減することができる。That is, in the prior art, the sectional diameter of the sub chamber 1 was 28 mm as the lower limit because of the arrangement of the spark plug and the like, whereas in this embodiment, it is rectangular and the vertical sectional length a is the smallest. 14 mm and the lateral dimension b can be set to 28 mm at the minimum, and the volume of the sub chamber can be reduced.
【００１９】従来の副室形状は、断面が円形であり軸対
称形の縦渦を発生するものであった。これに対し、本発
明では副室１の断面は長方形とされ、図３のＣ−Ｃ矢視
断面図に示すように、平面的な縦渦（或いは２次元の縦
渦）が発生するようになっている。従来の軸対称形の縦
渦は、軸心部から周辺部へ放射状に流れ、幾何学的には
その面積が変化するのに対し、本発明では、２次元の流
れであり、その面積が変化がしないので、より強力な縦
渦を発生させることができる。なお、縦渦の発生機構以
外は、前記の従来例と同様の作用で、ガスエンジンが作
動する。The conventional sub-chamber shape has a circular cross section and generates axisymmetric vertical vortices. On the other hand, in the present invention, the sub-chamber 1 has a rectangular cross section so that a planar vertical vortex (or a two-dimensional vertical vortex) is generated as shown in the sectional view taken along the line CC of FIG. Has become. Conventional axially symmetric vertical vortices flow radially from the axial center portion to the peripheral portion, and their area changes geometrically, whereas in the present invention, they are two-dimensional flows and their area changes. Since it does not occur, a stronger vertical vortex can be generated. The gas engine operates in the same manner as in the conventional example except for the vertical vortex generation mechanism.
【００２０】図４は本発明の第２の実施例で、本図は前
記の図１のＡ−Ａ矢視と同じ位置の断面を示している。
この実施例においては、副室１ａの断面形状は長方形
で、角隅部ｃは面取りされている。このほかは第１実施
例と同様に構成されている。長方形の角隅部を流れる気
体の流速は低いので、図４の実施例の様に、副室１ａの
角隅部ｃに面取りを施せば、有効に利用されていない部
分である各角隅部ｃはカットされることになるので、さ
らに副室の容積を低減することができるのである。FIG. 4 shows a second embodiment of the present invention, and this figure shows a cross section at the same position as seen from the arrow AA of FIG.
In this embodiment, the sub-chamber 1a has a rectangular cross-sectional shape and the corners c are chamfered. Other than that, the configuration is similar to that of the first embodiment. Since the flow velocity of the gas flowing through the corners of the rectangle is low, if the corners c of the sub-chamber 1a are chamfered as in the embodiment of FIG. 4, the corners that are not effectively used are the corners. Since c is cut, the volume of the sub chamber can be further reduced.
【００２１】図５は本発明の第３実施例を示している。
そして、図５は前記図１のＡ−Ａ矢視と同じ位置から見
た状態を示している。副室１ｂの断面は、角隅部ｄにア
ールをつけた形状となっており、その他の構成について
は第１実施例と同様である。そして、この実施例は前記
の図３の例と同様に、角隅部ｄにおける有効に利用され
ていない部分をカットすると共に、熱応力の集中を避
け、強度上の配慮も行われている。FIG. 5 shows a third embodiment of the present invention.
And FIG. 5 has shown the state seen from the same position as the AA arrow of said FIG. The sub-chamber 1b has a cross-section with a rounded corner d, and other configurations are similar to those of the first embodiment. Further, in this embodiment, as in the example of FIG. 3 described above, a portion of the corner portion d that is not effectively used is cut, concentration of thermal stress is avoided, and consideration is given to strength.
【００２２】ここで、図６、７は本発明の１実施例にお
ける寸法例を示している。そして、図６は副室１ｃの横
断面形状（平面形状）を示し、図７は副室１ｃの縦断面
形状（側面形状）を示している。6 and 7 show dimensional examples in one embodiment of the present invention. 6 shows the cross-sectional shape (planar shape) of the sub chamber 1c, and FIG. 7 shows the vertical cross-sectional shape (side surface shape) of the sub chamber 1c.
【００２３】副室１ｃの幅寸法ｔと、連通路２の径寸法
ｄと、副室１ｃの横方向寸法Ｄとの関係は ｄ≦ｔ＜
０．７Ｄ なる不等式で示される。また、副室１ｃの高
さ寸法Ｌの範囲は、横方向寸法Ｄに対して ０．５Ｄ≦
Ｌ≦２．５Ｄ なる不等式で示される。The relationship between the width t of the sub chamber 1c, the diameter d of the communication passage 2 and the lateral dimension D of the sub chamber 1c is d≤t <
It is shown by the inequality of 0.7D. The range of the height dimension L of the sub chamber 1c is 0.5D ≦ the lateral dimension D.
It is shown by the inequality L ≦ 2.5D.
【００２４】図８は本発明の第４実施例を示している。
図４の実施例では、横断面の角隅部に面取りが施されて
いるが、図８においては、縦断面の上下の角隅部ｖｃ１
及びｖｃ２に面取りが施されている。ここで、角隅部ｖ
ｃ１、ｖｃ２の傾斜角α、βは ３０°≦α 及び β
≦６０° という条件と、副室１ｄの高さ寸法Ｌと横方
向寸法Ｄとで決定される。ここで傾斜角α、βは、同一
である必要はない。FIG. 8 shows a fourth embodiment of the present invention.
In the embodiment of FIG. 4, the corners of the horizontal cross section are chamfered, but in FIG. 8, the upper and lower corners vc1 of the vertical cross section are shown.
And vc2 are chamfered. Where corner v
The inclination angles α and β of c1 and vc2 are 30 ° ≦ α and β
The condition is ≦ 60 °, and the height dimension L and the lateral dimension D of the sub chamber 1d are determined. Here, the inclination angles α and β do not have to be the same.
【００２５】図９で示す本発明の第５実施例では、連通
路２ｃが副室１ｅの角隅部の１つにに連通された実施例
を示している。ここで、連通路２ｃの中心線が副室１ｅ
の中心線に対して偏寄している寸法を符号εで示されて
おり、 ０≦ε＜（Ｄ／２）なる不等式で示される。な
お、連通路２ｃが連通している角隅部以外の角隅部の傾
斜角α、β、γは、それぞれ同一の数値を有している必
要は無い。The fifth embodiment of the present invention shown in FIG. 9 shows an embodiment in which the communication passage 2c communicates with one of the corners of the sub chamber 1e. Here, the center line of the communication passage 2c is the sub chamber 1e.
The dimension deviated from the center line of is indicated by the symbol ε, and is represented by the inequality of 0 ≦ ε <(D / 2). The inclination angles α, β, γ of the corners other than the corners through which the communication passage 2c communicates do not have to have the same numerical value.
【００２６】図１０は本発明の第６実施例を示してい
る。この第６実施例の構成は図９の第４実施例と似通っ
ているが、第４実施例では連通路２の中心線が副室１ｄ
の中心線Ｃ４に一致しているのに対して、第６実施例で
は連通路２ｄは副室１ｅの中心線Ｃ６に対して傾斜して
いる。ここで、連通路２ｄの傾斜角度δの範囲は、０°
≦δ≦４５°となる。FIG. 10 shows a sixth embodiment of the present invention. The configuration of the sixth embodiment is similar to that of the fourth embodiment of FIG. 9, but in the fourth embodiment, the center line of the communication passage 2 is the sub chamber 1d.
In contrast to the center line C4 of the sub chamber 1e, the communication passage 2d is inclined with respect to the center line C6 of the sub chamber 1e in the sixth embodiment. Here, the range of the inclination angle δ of the communication passage 2d is 0 °.
≦ δ ≦ 45 °.
【００２７】なお、図示の実施例はあくまでも例示であ
り、本発明の技術的範囲を示すものではない。The illustrated embodiment is merely an example and does not show the technical scope of the present invention.
【００２８】[0028]
【発明の効果】以上説明したように、本発明によれば副
室内での混合気の形成を妨げることなく、副室容積を低
減することができる。その結果、副室式ガス機関（例え
ば希薄燃焼タイプ）の排出ＮＯｘをより一層低減するこ
とが出来る。また、副室内で縦渦を形成して燃料ガスと
空気とを良好に混合出来るので、ＣＯや未燃ＨＣ等の大
気汚染物質の発生がさらに抑制されると共に、熱効率の
向上も見込まれる。さらに本発明では、副室内で良好な
縦渦が発生する様に、副室の横断面及び縦断面の形状
や、連通路との連通位置を種々工夫することが可能であ
る。As described above, according to the present invention, the volume of the sub chamber can be reduced without disturbing the formation of the air-fuel mixture in the sub chamber. As a result, the exhaust NOx of the sub-chamber type gas engine (for example, lean burn type) can be further reduced. In addition, since a vertical vortex can be formed in the sub chamber and the fuel gas and the air can be mixed well, generation of atmospheric pollutants such as CO and unburned HC can be further suppressed, and thermal efficiency can be improved. Further, in the present invention, it is possible to devise variously the shape of the cross section and the vertical section of the sub chamber and the position of communication with the communication passage so that a good vertical vortex is generated in the sub chamber.
【図１】本発明の第１実施例を示す縦断面図。FIG. 1 is a vertical sectional view showing a first embodiment of the present invention.
【図２】図１のＡ−Ａ矢視断面図。FIG. 2 is a sectional view taken along the line AA of FIG.
【図３】図１のＣ−Ｃ矢視断面図。FIG. 3 is a sectional view taken along the line CC of FIG.
【図４】本発明の第２実施例を示す副室の横断面図。FIG. 4 is a cross-sectional view of a sub chamber showing a second embodiment of the present invention.
【図５】本発明の第３実施例を示す副室の横断面図。FIG. 5 is a cross-sectional view of a sub chamber showing a third embodiment of the present invention.
【図６】本発明の寸法例を示す副室の横断面図。FIG. 6 is a cross-sectional view of a sub chamber showing a dimension example of the present invention.
【図７】本発明の寸法例を示す副室の縦断面図。FIG. 7 is a vertical cross-sectional view of a sub chamber showing a dimension example of the present invention.
【図８】本発明の第４実施例を示す副室の縦断面図。FIG. 8 is a vertical sectional view of a sub chamber showing a fourth embodiment of the present invention.
【図９】本発明の第５実施例を示す副室の縦断面図。FIG. 9 is a vertical sectional view of a sub chamber showing a fifth embodiment of the present invention.
【図１０】本発明の第６実施例を示す副室の縦断面図。FIG. 10 is a vertical sectional view of a sub chamber showing a sixth embodiment of the present invention.
【図１１】従来例を示す縦断面図。FIG. 11 is a vertical cross-sectional view showing a conventional example.
【図１２】図１１のＢ−Ｂ矢視断面図。12 is a sectional view taken along the line BB of FIG.
【図１３】別の従来例を示す縦断面図。FIG. 13 is a vertical cross-sectional view showing another conventional example.
１、１ａ〜ｅ、１Ａ〜Ｂ・・・副室 ２、２Ａ〜Ｂ、２、２ｃ、２ｄ・・・連通路 ３、３Ａ〜Ｂ・・・噴口 ４・・・主燃焼室 α、β、γ・・・角隅部の傾斜角 δ・・・連通路の傾斜角度 ｃ、ｄ・・・角隅部 1, 1a-e, 1A-B ... Sub chamber 2, 2A-B, 2, 2c, 2d ... Communication passage 3, 3A-B ... Injection port 4 ... Main combustion chamber α, β, γ: angle of inclination of corner δ: angle of inclination of communication path c, d ... angle of corner
Claims (8)
連通路は、断面の径が比較的小さい円筒形に構成されて
おり、副室は、横断面及び縦断面が長方形をしており且
つ横断面の断面積が前記連通路の横断面の断面積よりも
大きい直方体形状に構成されていることを特徴とする副
室式ガス機関の副室形状。1. A communication passage that connects a combustion region of a gas engine and a sub chamber is formed in a cylindrical shape having a relatively small cross-sectional diameter, and the sub chamber has a rectangular cross section and a vertical cross section. A sub-chamber shape of a sub-chamber type gas engine, wherein the sub-chamber has a rectangular parallelepiped shape whose cross-sectional area is larger than that of the communication passage.
隅が面取りされた形状である請求項１に記載の副室式ガ
ス機関の副室形状。2. The sub-chamber shape of a sub-chamber type gas engine according to claim 1, wherein a cross section of the sub-chamber has a rectangular shape and four corners thereof are chamfered.
隅に曲面が形成されている請求項１に記載の副室式ガス
機関の副室形状。3. The sub-chamber shape of a sub-chamber type gas engine according to claim 1, wherein a cross section of the sub-chamber is rectangular and curved surfaces are formed at four corners thereof.
隅が面取りされた形状である請求項１に記載の副室式ガ
ス機関の副室形状。4. The sub-chamber shape of a sub-chamber gas engine according to claim 1, wherein the sub-chamber has a rectangular vertical cross section and four corners are chamfered.
隅が面取りされており、さらに面取り部分の傾斜角度が
上部と下部とでは相違した形状である請求項４に記載の
副室式ガス機関の副室形状。5. The sub-chamber gas according to claim 4, wherein the sub-chamber has a rectangular vertical section and four corners thereof are chamfered, and the chamfered portions have different inclination angles between the upper portion and the lower portion. Sub-chamber shape of the engine.
隅に曲面が形成されている請求項１に記載の副室式ガス
機関の副室形状。6. The sub-chamber shape of a sub-chamber type gas engine according to claim 1, wherein the sub-chamber has a rectangular vertical cross section and curved surfaces are formed at four corners thereof.
通している請求項１−６のいずれか１項に記載の副室式
ガス機関の副室形状。7. The sub-chamber shape of a sub-chamber type gas engine according to claim 1, wherein the communication passage communicates with an end portion of a cross section of the sub-chamber.
斜して連通している請求項１−７のいずれか１項に記載
の副室式ガス機関の副室形状。8. The sub-chamber shape of a sub-chamber type gas engine according to claim 1, wherein the communication passage communicates with the sub-chamber in a manner inclined with respect to a cross section of the sub-chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6226441A JPH0893477A (en) | 1994-09-21 | 1994-09-21 | Shape of auxiliary combustion chamber of indirect injection gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6226441A JPH0893477A (en) | 1994-09-21 | 1994-09-21 | Shape of auxiliary combustion chamber of indirect injection gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0893477A true JPH0893477A (en) | 1996-04-09 |
Family
ID=16845161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6226441A Pending JPH0893477A (en) | 1994-09-21 | 1994-09-21 | Shape of auxiliary combustion chamber of indirect injection gas engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0893477A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2810692A1 (en) * | 2000-06-23 | 2001-12-28 | Peugeot Citroen Automobiles Sa | Pre-chamber, for ignition system of internal combustion engine, has separation wall pierced with series of orifices, arranged on circle with diameter less than half of pre-chamber diameter. |
| WO2003044349A1 (en) * | 2001-11-20 | 2003-05-30 | Jenbacher Aktiengesellschaft | Internal combustion engine |
| JP2005090381A (en) * | 2003-09-18 | 2005-04-07 | Niigata Power Systems Co Ltd | Pilot oil ignition gas engine |
| CN113969846A (en) * | 2021-11-01 | 2022-01-25 | 安徽航瑞航空动力装备有限公司 | Engine cylinder head and method of assembling the same |
-
1994
- 1994-09-21 JP JP6226441A patent/JPH0893477A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2810692A1 (en) * | 2000-06-23 | 2001-12-28 | Peugeot Citroen Automobiles Sa | Pre-chamber, for ignition system of internal combustion engine, has separation wall pierced with series of orifices, arranged on circle with diameter less than half of pre-chamber diameter. |
| WO2003044349A1 (en) * | 2001-11-20 | 2003-05-30 | Jenbacher Aktiengesellschaft | Internal combustion engine |
| EP1985821A2 (en) | 2001-11-20 | 2008-10-29 | GE Jenbacher GmbH & Co. OHG | Combustion engine |
| EP1985821A3 (en) * | 2001-11-20 | 2010-03-10 | GE Jenbacher GmbH & Co. OHG | Combustion engine |
| JP2005090381A (en) * | 2003-09-18 | 2005-04-07 | Niigata Power Systems Co Ltd | Pilot oil ignition gas engine |
| CN113969846A (en) * | 2021-11-01 | 2022-01-25 | 安徽航瑞航空动力装备有限公司 | Engine cylinder head and method of assembling the same |
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