JPS61135924A - Auxiliary ignition type diesel engine - Google Patents

Auxiliary ignition type diesel engine

Info

Publication number
JPS61135924A
JPS61135924A JP59257207A JP25720784A JPS61135924A JP S61135924 A JPS61135924 A JP S61135924A JP 59257207 A JP59257207 A JP 59257207A JP 25720784 A JP25720784 A JP 25720784A JP S61135924 A JPS61135924 A JP S61135924A
Authority
JP
Japan
Prior art keywords
spark plug
swirl
nozzle
ignition
fuel injection
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
Application number
JP59257207A
Other languages
Japanese (ja)
Inventor
Junichi Kawashima
純一 川島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP59257207A priority Critical patent/JPS61135924A/en
Publication of JPS61135924A publication Critical patent/JPS61135924A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00Engines characterised by precombustion chambers
    • F02B19/12Engines characterised by precombustion chambers with positive ignition
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00Engines characterised by precombustion chambers
    • F02B19/08Engines characterised by precombustion chambers the chamber being of air-swirl type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00Engines characterised by air compression and subsequent fuel addition
    • F02B3/06Engines characterised by air compression and subsequent fuel addition with compression ignition
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Abstract

PURPOSE:To make a stable ignition and combustion under an electric discharging spark of a spark plug at all times and improve a starting characteristic at a low temperature or the like by a method wherein a fuel injection nozzle placed adjacent to a swirl flow chamber is provided with at least two injection holes and each of the injection holes is directed toward the specified direction. CONSTITUTION:A spark plug 6 is inserted into a swirl flow chamber 3 from above the cylinder head 1 in a vertical direction. The side of the swirl flow chamber 3 which is upstream of the swirl flows S than the spark plug 6 has a fuel injection nozzle 7 from the side part of the cylinder head 1. In this case, the fuel injection nozzle 7 is composed of hole type nozzle having two injection holes. One of the injection axis (a) is directed at an intermediate part between the point near the spark plug 6, that is, between the spark plug 6 and the fuel injection nozzle 7, and the other injection axis (b) is directed toward the downstream of the swirl flow S than the spark plug 6. The injection axis (b) is set at its injection direction along the swirl flow S, that is, a forward swirl direction.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、渦流室内に配設した点火栓によ如火花点火
を行う補助点火式ディーゼルエンジンの改良に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to an improvement in an auxiliary ignition type diesel engine in which spark ignition is achieved by means of a spark plug disposed within a swirl chamber.

従来の技術 ディーゼルエンジンは周知のようにシリンダ内に吸入し
た空気全圧縮して高温にし、そこに燃料を霧状に噴射し
て自己着火させる所謂圧縮着火方法に依存しているため
、自着天性の低い燃料、例えばワイドカット軽油やエタ
ノール、メタノールといった低セタン価燃料では、運転
が困Mlである。
Conventional technologyAs is well known, diesel engines rely on the so-called compression ignition method, in which the air sucked into the cylinder is fully compressed to a high temperature, and fuel is injected into the air in the form of a mist to self-ignite. It is difficult to operate the fuel with a low cetane number fuel such as wide-cut diesel oil, ethanol, or methanol.

また一般にガソリン機関に比べて低温始動性が悪く、低
温時の着火遅nによる騒音などの問題もある。
In addition, they generally have poor low-temperature startability compared to gasoline engines, and there are also problems such as noise due to the ignition delay at low temperatures.

そこで、通常のガソリン機関と同様の点火装置を利用し
、具体的には渦流室内にグロープラグに代えて点火栓全
配設して、定常的に、あるいは圧縮着火が困難な低温時
などにのみ、燃料噴霧を強制的に火花点火するようにし
た補助点火式ディーゼルエンジンが提案されている(例
えば「S 、A E8100725park−Assi
sted Diesel for MultifulC
apability J 、実開昭58−1770号公
報等参照)。
Therefore, an ignition system similar to that of a normal gasoline engine is used, and specifically, all spark plugs are installed in the vortex chamber instead of glow plugs, so that the ignition system can be used regularly or only at low temperatures when compression ignition is difficult. , an auxiliary ignition diesel engine in which fuel spray is forcibly ignited by a spark has been proposed (for example, "S, A E8100725park-Assi
sted Diesel for MultifulC
compatibility J, Utility Model Application Publication No. 1770/1983, etc.).

発明が解決しようとする問題点 しかし、上記のように火花点火により強制着火させるた
めには、噴射された燃料によって点火栓近傍に適当な空
燃比の混合気が形成されなければならず、しかも点火栓
が噴射燃料によって濡れ易く、かつ渦流室内のスワール
流によって火炎核が吹き消され易いので、常に安定した
着火を確保することが難しく、失火を生じ易い。
Problems to be Solved by the Invention However, in order to force ignition by spark ignition as described above, an air-fuel mixture with an appropriate air-fuel ratio must be formed near the ignition plug by the injected fuel. Since the plug is easily wetted by the injected fuel and the flame kernel is easily blown out by the swirl flow in the vortex chamber, it is difficult to always ensure stable ignition, and misfires are likely to occur.

問題点を解決するための手段 上記の問題点を解決するために、この発明に係る補助点
火式ディーゼルエンジンは、燃料噴射ノズルとして少く
とも2つの噴孔ヲ有する多噴孔燃料噴射ノズルを用い、
その一部の噴孔を点火栓の近傍を指向させて設けるとと
もに、残りの噴孔を、上記点火栓のスワール流の下流側
となる位置を指向させ、かつその噴射方向が順スワール
方向となるように設けたものである。
Means for Solving the Problems In order to solve the above problems, the auxiliary ignition type diesel engine according to the present invention uses a multi-nozzle fuel injection nozzle having at least two nozzle holes as a fuel injection nozzle,
Some of the nozzle holes are provided so as to be oriented near the ignition plug, and the remaining nozzle holes are oriented downstream of the swirl flow of the ignition plug, and the injection direction is in the forward swirl direction. It was set up like this.

作用 上記燃料噴射ノズルの一部の噴孔から点火栓近傍に噴射
された燃料は、渦流室壁面で燃料膜を形成すると同時に
、渦流室壁面から受熱して速やかに蒸発し、点火栓近傍
に混合気を形成する。この混合気の形成は、その部分に
衝突する燃料が総噴射量の一部であるため周囲の空気を
利用して非常に良好に行われ、点火栓の放電火花により
直ちに着火する。点火栓電極部に形成された火炎はスワ
ール流に乗ってスワール流下流側に進み、残りの噴孔か
ら噴射された燃料噴霧を着火させる。この残りの噴孔か
らの燃料噴霧は順スワール方向に噴射されているので、
スワール流に乗って渦流室内の空気を有効に利用しつつ
速やかに渦流室全体に燃焼が拡がり、安定した着火燃焼
が実現できる。
Function: The fuel injected near the spark plug from some of the nozzle holes of the fuel injection nozzle forms a fuel film on the wall of the swirl chamber, and at the same time receives heat from the wall of the swirl chamber, quickly evaporates, and mixes near the spark plug. Form the spirit. This air-fuel mixture is formed very well using the surrounding air since the fuel that impinges on that part is part of the total injection quantity, and is immediately ignited by the spark from the ignition plug. The flame formed on the ignition plug electrode portion rides the swirl flow to the downstream side of the swirl flow, and ignites the fuel spray injected from the remaining nozzle holes. Since the fuel spray from the remaining nozzle holes is injected in the forward swirl direction,
Riding the swirl flow, combustion quickly spreads throughout the swirl chamber while making effective use of the air within the swirl chamber, making it possible to achieve stable ignition combustion.

実施例 第1図はこの発明の第1実施例を示すシリンダヘッド1
要部の断面図である。図において、2はシリンダヘッド
1の下面に嵌合固定されたホットプラグ、3ばこのホッ
トプラグ2とシリンダヘッド1とによって形成された渦
流室を示している。
Embodiment FIG. 1 shows a cylinder head 1 showing a first embodiment of the present invention.
FIG. 3 is a cross-sectional view of main parts. In the figure, reference numeral 2 indicates a hot plug fitted and fixed to the lower surface of the cylinder head 1, and a swirl chamber formed by the hot plug 2 and the cylinder head 1.

上記渦流室3は、ホットプラグ2に渦流室3の接線方向
に沿って形成された連絡孔4を介して主燃焼室5に連通
し、圧縮行程時に図の反時計回多方向にスワール流Sが
生成されるようになっている。
The swirl chamber 3 communicates with the main combustion chamber 5 through a communication hole 4 formed in the hot plug 2 along the tangential direction of the swirl chamber 3, and the swirl flow S flows counterclockwise in the figure during the compression stroke. is now generated.

そして、この渦流室3にはシリンダヘッドlの上方から
垂直方向に点火栓6が挿入固定されておシ、その電極部
6aが渦流室3の頂部、更に詳しくは頂部からスワール
流Sの若干下流側に位置している。また上記点火栓6よ
シもスワール流Sの上流側となる渦流室3側部に、シリ
ンダヘッド1の側方から燃料噴射ノズル7が挿入固定さ
れておシ、その先端部は渦流室3の中央よりも上方に位
置している。上記燃料噴射ノズル7は、2つの噴孔を有
するホール型ノズルが用いられておシ、一方の噴霧軸a
は、点火栓6の近傍、詳しくは点火栓6と燃料噴射ノズ
ル7との中間部を指向し、がっ他万の噴霧軸すは、点火
栓6よりもスワール流Sの下流側を指向している。また
噴霧軸すは、その噴射方向がスワール流口に沿った方向
すなわち順スワール方向となっている。
An ignition plug 6 is inserted and fixed into this swirl chamber 3 vertically from above the cylinder head l, and its electrode portion 6a is located at the top of the swirl chamber 3, more specifically, slightly downstream of the swirl S from the top. Located on the side. In addition to the spark plug 6, a fuel injection nozzle 7 is inserted and fixed from the side of the cylinder head 1 into the side of the swirl chamber 3, which is the upstream side of the swirl S. It is located above the center. The fuel injection nozzle 7 is a hole type nozzle having two injection holes, and one of the fuel injection nozzles 7 has a spray axis a.
is directed to the vicinity of the spark plug 6, more specifically, to the intermediate portion between the spark plug 6 and the fuel injection nozzle 7, and the other spray axis is directed to the downstream side of the swirl flow S from the spark plug 6. ing. Further, the spray direction of the spray axis is along the swirl outlet, that is, the forward swirl direction.

第2図は、上記の噴霧軸aに沿って噴射された燃料が渦
流室3壁面に形成する燃料膜の分布状態を、渦流室3の
下方から示した図であって、点火栓6近傍でかつスワー
ル流Sの上流Sの上流側に斜線で示すように燃料膜が形
成される。この燃料膜は前述したように壁面から受熱し
て直ちに蒸発し、スワール流Sに乗って点火栓電極部6
a周囲に可燃混合気を形成するのである。そして、放電
火花により形成された火炎核がスワール流S下流側に進
み、噴霧軸すに沿って噴射された燃料全確実に着火させ
ることになる。
FIG. 2 is a diagram showing the distribution state of the fuel film formed on the wall surface of the swirl chamber 3 by the fuel injected along the above-mentioned spray axis a, viewed from below the swirl chamber 3, in the vicinity of the spark plug 6. Further, a fuel film is formed on the upstream side of the swirl flow S as shown by diagonal lines. As described above, this fuel film receives heat from the wall surface and immediately evaporates, riding on the swirl flow S and reaching the spark plug electrode portion 6.
This forms a combustible mixture around a. Then, the flame kernel formed by the discharge sparks advances to the downstream side of the swirl flow S, and completely ignites the fuel injected along the spray axis.

次に第3図は、上記第1実施例を一部変更したこの発明
の第2実施例金示している。これは、上記の噴霧軸aが
指向する位置と点火栓電極部6aとの間つ1り点火栓電
極部6aのスワール流S上流側に、他の一般部壁面と滑
らかに連続した突起部8が形成されたものであり、その
他の構成は上記第1実施例と同一である。上記突起部8
を設けることによって、圧縮行程時のスワール流Sが全
体として図の反時計回多方向に流れるとともに、上記突
起部8付近で局部的な渦からなる再循環流S1が形成さ
れる。従って、噴霧軸すに沿って噴射された燃料は、そ
の再循環流3.に取り込1れ、点火栓電極部6a近傍に
比較的長い時間滞溜することになって、一層確実な着火
が図れる。なた、燃料膜が上記突起部8によって遮られ
るので、電極部6aの濡れによる失火も生じにくくなる
Next, FIG. 3 shows a second embodiment of the present invention, which is a partially modified version of the first embodiment. This is a protrusion 8 that is smoothly continuous with the other general wall surface on the upstream side of the swirl flow S of the ignition plug electrode part 6a between the position where the spray axis a is directed and the ignition plug electrode part 6a. The other configurations are the same as those of the first embodiment. The protrusion 8
By providing this, the swirl flow S during the compression stroke as a whole flows counterclockwise in the figure, and a recirculation flow S1 consisting of local vortices is formed near the protrusion 8. Therefore, the fuel injected along the spray axis is transferred to its recirculated flow 3. The fuel is absorbed into the spark plug and remains near the spark plug electrode portion 6a for a relatively long time, making it possible to achieve more reliable ignition. Additionally, since the fuel film is blocked by the protrusion 8, misfires due to wetting of the electrode portion 6a are less likely to occur.

次に第4図は、この発明の第3実施例全示している。こ
の実施例では、2つの噴孔’に!するホール型燃料噴射
ノズル7が渦流室3の頂部に位置するとともに、点火栓
6が連絡孔4の開口近傍、詳しくは渦流室3の略中間の
高さ位置に配設されており、上記燃料噴射ノズル7の一
方の噴霧軸aが、点火栓電極部6aの近傍でかつ点火栓
6と燃料噴射ノズル7との間の位置を指向し、筐だ他万
の噴霧軸すが、順スワール方向に沿ってかつ上記点火栓
6と略相対する位置を指向している。でた、上記点火栓
6のスワール流S上流側には、突起部9が形成されてい
る。この突起部9は、第5図にも示すように、ホットプ
ラグ2の連絡孔4開口寄りの部分に三日月形に膨出形成
されたものであって、この突起部9の存在により、渦流
室3の水平断面形状が点火栓6の部分で急激に拡大する
ようになっている。
Next, FIG. 4 shows a third embodiment of the present invention. In this example, there are two nozzle holes! A hole-type fuel injection nozzle 7 is located at the top of the swirl chamber 3, and an ignition plug 6 is disposed near the opening of the communication hole 4, more specifically at a height approximately in the middle of the swirl chamber 3. One spray axis a of the injection nozzle 7 is directed to a position near the ignition plug electrode part 6a and between the ignition plug 6 and the fuel injection nozzle 7, and the spray axis a of the casing and other parts is directed in the forward swirl direction. The spark plug 6 is directed toward a position substantially opposite to the spark plug 6. A protrusion 9 is formed on the upstream side of the spark plug 6 in the swirl flow S. As shown in FIG. 5, this protrusion 9 is a crescent-shaped bulge formed in a portion of the hot plug 2 near the opening of the communication hole 4, and the presence of this protrusion 9 creates a swirl chamber. The horizontal cross-sectional shape of 3 suddenly expands at the ignition plug 6 portion.

従って、圧縮行程時にスワール流Sが発生すると、点火
栓6付近に燃料噴射ノズル7側から点火栓6側へと流れ
る再循環流S2が形成され、噴霧軸aに沿って噴射され
て壁面で蒸発した燃料分取り込んで、点火栓電極部6a
近傍に可燃混合気全形成する。そして、ここで形成され
た火炎が前述した実施例と同様にスワール流Sに乗って
進み、噴霧軸すに沿って噴射された燃料を安定的に着火
させるのである。
Therefore, when the swirl flow S occurs during the compression stroke, a recirculation flow S2 is formed near the spark plug 6, flowing from the fuel injection nozzle 7 side to the spark plug 6 side, and is injected along the spray axis a and evaporates on the wall surface. The ignition plug electrode part 6a
A combustible mixture is formed nearby. Then, the flame formed here travels along the swirl flow S, as in the embodiment described above, and stably ignites the fuel injected along the spray axis.

この実施例によれば、点火栓電極部6aに強いスワール
流Sが直接に当たることがないので、安定した放電火花
を得られ、かつ火花核が吹き消されてし1う虞れがない
According to this embodiment, since the strong swirl flow S does not directly impinge on the ignition plug electrode portion 6a, stable discharge sparks can be obtained and there is no risk of the spark kernel being blown out.

次に第6図に示す第4実施例は、上記第3実施例の構成
において、更に燃料噴射ノズル7として3つの噴孔を有
するホール型ノズルを用い、点火栓6と略相対する位置
に一対の噴霧軸bI+b2を指向させたものである。す
なわち、三日月状に膨出形成さtた突起部9の存在によ
って、スワール流Sは楕円状となるが、このように一対
の噴霧軸bl+b2 に沿って広く噴射することにより
、スワール流Sにおける空気利用率全向上させることが
できる。壕だ、点火栓6に向かう噴霧軸aiC沿った燃
料量が相対的に少なくかり、高負荷時に生じ易い点火栓
6近傍の混合気の過濃化を防止できる。
Next, a fourth embodiment shown in FIG. 6 has the structure of the third embodiment described above, but further uses a hole-type nozzle having three injection holes as the fuel injection nozzle 7, and one pair is located at a position substantially opposite to the ignition plug 6. The spray axis bI+b2 is directed. That is, the swirl flow S becomes elliptical due to the presence of the crescent-shaped protrusion 9, but by spraying widely along the pair of spray axes bl+b2, the air in the swirl flow S becomes The utilization rate can be completely improved. In other words, the amount of fuel along the spray axis aiC toward the ignition plug 6 is relatively small, and over-enrichment of the air-fuel mixture near the ignition plug 6, which tends to occur under high load, can be prevented.

発明の効果 以上の説明で明らかなように、この発明に係る補助点火
式ディーゼルエンジンにおいては、点火栓の放電火花に
よって常に安定した着火燃焼が可能となυ、強制着火に
よる低温始動性の向−ヒ、ア! イドル騒音の低減あるいは低セン価燃料による運転など
を実現できる。
Effects of the Invention As is clear from the above explanation, the auxiliary ignition type diesel engine according to the present invention has two advantages: stable ignition combustion is always possible due to the spark discharged from the ignition plug, and low-temperature startability is improved through forced ignition. Hee, a! It is possible to reduce idle noise and operate with low fuel price.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の第1実施例金示すシリンダヘッド要
部の断面図、第2図は渦流室壁面の燃料膜分布状態を示
す下面図、第3図はこの発明の第2実施例を示すシリン
ダヘッド要部の断面図、第4図はこの発明の第3実施例
を示すシリンダヘッド要部の断面図、第5図はこの第3
実施例におけるホットプラグの平面図、第6図は更に噴
孔数を増した第4実施例を示す斜視説明図である。 1・・・シリンダヘッド、2・・・ホットプラグ、3・
・・渦流室、4・・・連絡孔、6・・・点火栓、7・・
・燃料噴射ノズル、8,9・・・突起部、S・・・スワ
ール流。 り)   2   猶 第1図 第2図
Fig. 1 is a cross-sectional view of the main part of a cylinder head showing a first embodiment of the present invention, Fig. 2 is a bottom view showing the fuel film distribution state on the wall surface of the swirl chamber, and Fig. 3 is a cross-sectional view of the main part of a cylinder head showing a first embodiment of the present invention. FIG. 4 is a cross-sectional view of the main part of the cylinder head showing a third embodiment of the present invention, and FIG.
FIG. 6 is a plan view of the hot plug according to the embodiment, and is a perspective explanatory view showing a fourth embodiment in which the number of nozzle holes is further increased. 1... Cylinder head, 2... Hot plug, 3...
... Vortex chamber, 4... Communication hole, 6... Spark plug, 7...
- Fuel injection nozzle, 8, 9...Protrusion, S...Swirl flow. 2) Figure 1 Figure 2

Claims (4)

【特許請求の範囲】[Claims] (1)燃料噴射ノズルが臨設された渦流室内に火花点火
用の点火栓を備えた補助点火式デイーゼルエンジンにお
いて、上記燃料噴射ノズルは少くとも2つの噴孔を有し
、その一部の噴孔が上記点火栓の近傍を指向して設けら
れるとともに、残りの噴孔が、上記点火栓よりもスワー
ル流の下流側となる位置を指向し、かつ噴射方向が順ス
ワール方向となるように設けられていることを特徴とす
る補助点火式デイーゼルエンジン。
(1) In an auxiliary ignition diesel engine equipped with an ignition plug for spark ignition in a swirl chamber in which a fuel injection nozzle is installed, the fuel injection nozzle has at least two nozzle holes, and some of the nozzle holes are is provided so as to be oriented near the ignition plug, and the remaining nozzle holes are oriented downstream of the ignition plug in the swirl flow, and the injection direction is provided in the forward swirl direction. A diesel engine with auxiliary ignition.
(2)点火栓が渦流室の略頂部に位置するとともに、2
つの噴孔を有する燃料噴射ノズルが上記点火栓よわもス
ワール流の上流に位置し、その一方の噴孔が上記点火栓
と燃料噴射ノズルとの間を指向するとともに、他万の噴
孔が点火栓のスワール流下流位置を指向していることを
特徴とする特許請求の範囲第1項記載の補助点火式デイ
ーゼルエンジン。
(2) The spark plug is located approximately at the top of the swirl chamber, and
A fuel injection nozzle having two injection holes is located upstream of the spark plug and the swirl flow, one of the injection holes is directed between the spark plug and the fuel injection nozzle, and the other injection hole is ignited. The auxiliary ignition type diesel engine according to claim 1, characterized in that the swirl flow of the plug is directed toward a downstream position.
(3)上記点火栓のスワール流上流側に、スワール流に
よる再循環流を形成するための突起部が設けられている
ことを特徴とする特許請求の範囲第2項記載の補助点火
式デイーゼルエンジン。
(3) An auxiliary ignition type diesel engine according to claim 2, characterized in that a protrusion for forming a recirculation flow by a swirl flow is provided on the swirl flow upstream side of the spark plug. .
(4)2つの噴孔を有する燃料噴射ノズルが渦流室の略
頂部に位置するとともに、点火栓が連絡孔の開口近傍に
位置し、かつ上記点火栓のスワール流上流側に、スワー
ル流による再循環流を形成するための突起部を有し、上
記燃料噴射ノズルの一方の噴孔が上記再循環流域を指向
するとともに、化方の噴孔が上記点火栓と略相対する位
置を指向していることを特徴とする特許請求の範囲第1
項記載の補助点火式デイーゼルエンジン。
(4) A fuel injection nozzle having two nozzle holes is located approximately at the top of the swirl chamber, and a spark plug is located near the opening of the communication hole, and a swirl flow is generated upstream of the spark plug. The fuel injection nozzle has a projection for forming a circulating flow, one nozzle hole of the fuel injection nozzle is oriented toward the recirculation region, and the other nozzle hole is oriented at a position substantially opposite to the ignition plug. Claim 1 characterized in that
Auxiliary ignition diesel engine as described in section.
JP59257207A 1984-12-05 1984-12-05 Auxiliary ignition type diesel engine Pending JPS61135924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59257207A JPS61135924A (en) 1984-12-05 1984-12-05 Auxiliary ignition type diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59257207A JPS61135924A (en) 1984-12-05 1984-12-05 Auxiliary ignition type diesel engine

Publications (1)

Publication Number Publication Date
JPS61135924A true JPS61135924A (en) 1986-06-23

Family

ID=17303151

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59257207A Pending JPS61135924A (en) 1984-12-05 1984-12-05 Auxiliary ignition type diesel engine

Country Status (1)

Country Link
JP (1) JPS61135924A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005052335A1 (en) * 2003-11-19 2005-06-09 Musi Engines Limited Internal combustion engine
US7387103B2 (en) 2003-11-19 2008-06-17 Dan Merritt Internal combustion engine
CN100427734C (en) * 2003-11-19 2008-10-22 Musi发动机有限公司 Internal combustion engine
CN110131031A (en) * 2019-06-06 2019-08-16 大连理工大学 A kind of engine ignition chamber system having high disturbance composite channel
CN114135417A (en) * 2021-11-22 2022-03-04 潍柴动力股份有限公司 Cylinder cap, engine and vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005052335A1 (en) * 2003-11-19 2005-06-09 Musi Engines Limited Internal combustion engine
US7152572B2 (en) 2003-11-19 2006-12-26 Musi Engines Limited Internal combustion engine
US7387103B2 (en) 2003-11-19 2008-06-17 Dan Merritt Internal combustion engine
CN100427734C (en) * 2003-11-19 2008-10-22 Musi发动机有限公司 Internal combustion engine
CN110131031A (en) * 2019-06-06 2019-08-16 大连理工大学 A kind of engine ignition chamber system having high disturbance composite channel
CN114135417A (en) * 2021-11-22 2022-03-04 潍柴动力股份有限公司 Cylinder cap, engine and vehicle

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