JPH05312042A - Combustion chamber of diesel engine - Google Patents
Combustion chamber of diesel engineInfo
- Publication number
- JPH05312042A JPH05312042A JP4120740A JP12074092A JPH05312042A JP H05312042 A JPH05312042 A JP H05312042A JP 4120740 A JP4120740 A JP 4120740A JP 12074092 A JP12074092 A JP 12074092A JP H05312042 A JPH05312042 A JP H05312042A
- Authority
- JP
- Japan
- Prior art keywords
- cavity
- combustion chamber
- shelf
- cylinder head
- piston
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0636—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston the combustion space having a substantially flat and horizontal bottom
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0618—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston having in-cylinder means to influence the charge motion
- F02B23/063—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston having in-cylinder means to influence the charge motion the combustion space in the piston interacting fluid dynamically with the cylinder head, the injector body or the cylinder wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0672—Omega-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder center axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F2001/244—Arrangement of valve stems in cylinder heads
- F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis
-
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ディーゼルエンジンの
燃焼室に関するものである。FIELD OF THE INVENTION The present invention relates to a combustion chamber of a diesel engine.
【０００２】[0002]
【従来の技術】一般に、直接噴射式のディーゼルエンジ
ンは、出力や燃費が良い反面、ＮＯX や黒煙（スモー
ク）の排出が副室式ディーゼルエンジンより多いという
問題がある。この対策としては、燃焼室の形状を平面視
で正方形状にして四隅のコーナー部に小さな渦流を発生
させ、燃焼室内での燃料と空気との混合促進を図るもの
（四角型）、或いは燃焼室の入口を絞ることで、圧縮行
程の終わり付近でピストン上面とシリンダヘッド下面の
間の空気が燃焼室側へ押し出されるときに生じるスキッ
シュを棚部（リップ）により強めて、その空気の乱れに
より燃料噴霧との混合を向上させ、良好な燃焼を得よう
とするもの（リエントラント型）などがある。2. Description of the Related Art Generally, a direct injection type diesel engine has good output and fuel efficiency, but has a problem that it emits more NO X and black smoke than a sub-chamber type diesel engine. As measures against this, the shape of the combustion chamber is made square in plan view and small vortexes are generated at the corners of the four corners to promote the mixing of fuel and air in the combustion chamber (square type), or the combustion chamber. By narrowing the inlet of the cylinder, the squish generated when the air between the piston upper surface and the cylinder head lower surface is pushed out to the combustion chamber side near the end of the compression stroke is strengthened by the ledge (lip), and the turbulence of the air causes the fuel to flow. There are those (reentrant type) that improve mixing with the spray and try to obtain good combustion.
【０００３】一方シリンダヘッド側を改良して、理想的
な燃焼を得ようとするもの（「直噴式圧縮着火機関」，
特開昭５１−１２４７１２号公報）も提案されている。
図５に示すように、この提案は、シリンダヘッド１の下
面に燃料噴射ノズル２を囲繞するプラグ部３を突設さ
せ、ピストン４の上死点近傍においてプラグ部３が燃焼
室５内に収納されるようにして、過濃混合気の部分と稀
薄混合気の部分とに区画し、燃焼を緩やかにしようとす
るものである。On the other hand, by improving the cylinder head side to obtain ideal combustion ("direct injection compression ignition engine",
JP-A-51-124712) has also been proposed.
As shown in FIG. 5, in this proposal, a plug portion 3 surrounding the fuel injection nozzle 2 is provided on the lower surface of the cylinder head 1 so that the plug portion 3 is housed in the combustion chamber 5 near the top dead center of the piston 4. In this way, the combustion is divided into a rich mixture portion and a lean mixture portion so as to moderate the combustion.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら近来の排
ガス改善要求、特に黒煙の低減要求は厳しく、上記従来
の四角型、或いはリエントラント型燃焼室では目標値を
達成することは難しかった。However, the recent demands for exhaust gas improvement, particularly for reducing black smoke, are strict, and it has been difficult to achieve the target value in the above-mentioned conventional square type or reentrant type combustion chamber.
【０００５】また図５の提案においては、ある程度の良
好な燃焼は期待できるものの、強いスキッシュを得るた
めにはプラグ部３とリップ６との間隔を狭くしなければ
ならず、絞り損失が大きくなってしまうという問題があ
った。さらにこの提案では、ピストン下降時の早い時期
に、火焔（燃焼ガス）が燃焼室５からプラグ部３とリッ
プ６との間を通ってシリンダヘッド１との隙間に出るよ
うになっているので、この火焔がシリンダヘッド１の下
面やピストン４の上面に干渉して冷却されてしまい、黒
煙の発生につながるおそれがある。Further, in the proposal of FIG. 5, although good combustion can be expected to some extent, in order to obtain a strong squish, the distance between the plug portion 3 and the lip 6 must be narrowed, resulting in a large throttling loss. There was a problem that it would end up. Further, in this proposal, since the flame (combustion gas) passes through the space between the combustion chamber 5 and the plug portion 3 and the lip 6 into the gap with the cylinder head 1 at an early stage when the piston descends, This flame may interfere with the lower surface of the cylinder head 1 and the upper surface of the piston 4 to be cooled, which may lead to the generation of black smoke.
【０００６】そこで本発明は、上記事情に鑑み、小さな
絞り損失で強い縦方向の渦流を得ると共に火焔のはみ出
しを抑えて、黒煙を大幅に低減させることのできるディ
ーゼルエンジンの燃焼室を提供すべく創案されたもので
ある。In view of the above circumstances, the present invention provides a combustion chamber of a diesel engine capable of obtaining a strong longitudinal vortex with a small throttling loss and suppressing flame bleeding, thereby significantly reducing black smoke. It was created accordingly.
【０００７】なお上記以外の従来技術としては、「シリ
ンダ燃焼室」（特開昭５５−４９５２１号公報）がある
が、この提案は燃料噴射ノズルに直管状のスリーブを設
けただけなので、前記提案と同様な絞り損失及び火焔の
はみ出しの課題が残されていると考えられる。As a prior art other than the above, there is a "cylinder combustion chamber" (Japanese Patent Laid-Open No. 55-49521). However, this proposal only provides a straight tubular sleeve for the fuel injection nozzle, and therefore the above-mentioned proposal. It is considered that the same problems of throttling loss and flaming out of the flame still remain.
【０００８】[0008]
【課題を解決するための手段】本発明は、ピストンの頂
部に棚部を有したキャビティを形成すると共に、シリン
ダヘッドにキャビティの中央部を覆う傘状部材を設け、
この傘状部材に、圧縮行程の終期に棚部の先端から下側
にかけて所定の間隔を隔てて沿う延出部を形成したもの
である。According to the present invention, a cavity having a shelf is formed at the top of a piston, and a cylinder head is provided with an umbrella-shaped member for covering the center of the cavity.
This umbrella-like member is formed with an extending portion that extends along the predetermined distance from the tip of the shelf to the lower side at the end of the compression stroke.
【０００９】[0009]
【作用】上記構成によって、延出部は、圧縮行程におい
て棚部との間にスキッシュの通路を区画して、キャビテ
ィ内に強い縦方向の渦流を生成させる。傘状部材は、キ
ャビティ内での縦渦流による良好な燃焼を、その火焔を
充分な時間閉じ込めることで完了させる。With the above construction, the extension portion defines a squish passage between itself and the shelf portion in the compression stroke to generate a strong vertical vortex flow in the cavity. The umbrella-like member completes a good combustion due to the vertical vortex flow in the cavity by confining its flame for a sufficient time.
【００１０】[0010]
【実施例】以下、本発明の実施例を添付図面に従って説
明する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１１】図１は、本発明に係わるディーゼルエンジ
ンの燃焼室の一実施例を示したものである。この燃焼室
は、ピストン１１の頂部に棚部１２を有したキャビティ
１３が形成されていると共に、シリンダヘッド１４にキ
ャビティ１３の中央部１５を覆う傘状部材１６が設ら
れ、この傘状部材１６に、圧縮行程の終期に棚部１２か
ら所定の間隔を隔ててられる延出部１７が形成されて構
成されている。FIG. 1 shows an embodiment of a combustion chamber of a diesel engine according to the present invention. In this combustion chamber, a cavity 13 having a shelf 12 is formed on the top of a piston 11, and a cylinder head 14 is provided with an umbrella-shaped member 16 that covers a central portion 15 of the cavity 13. In the end of the compression stroke, an extension 17 is formed which is spaced from the shelf 12 by a predetermined distance.
【００１２】キャビティ１３は、棚部１２により入口１
８がキャビティ最大径よりも若干狭められていると共
に、中央底部には円錐状の突起部１９が形成されて、実
質的に略円形の断面を有する円環状の燃焼室となるよう
に形成されている。すなわちキャビティ１３の側壁２０
及び底壁２１が、流入した空気を縦方向に旋回させるよ
うな壁面として形成されている。The cavity 13 has an inlet 1 defined by a shelf 12.
8 is slightly narrower than the maximum diameter of the cavity, and a conical protrusion 19 is formed at the center bottom to form an annular combustion chamber having a substantially circular cross section. There is. That is, the side wall 20 of the cavity 13
The bottom wall 21 is formed as a wall surface that vertically swirls the inflowing air.
【００１３】傘状部材１６は、シリンダヘッド１４にキ
ャビティ中心位置で設けられた燃料噴射ノズル２２を囲
むように設けられ、上端側は噴射ノズル２２の本体に嵌
合されている。そして下端側は、シリンダヘッド１４の
下面に突出した位置から径方向外方に拡径されて、頂角
がおよそ140 度の円錐状に形成されている。The umbrella-like member 16 is provided so as to surround the fuel injection nozzle 22 provided at the center of the cavity in the cylinder head 14, and the upper end side is fitted into the main body of the injection nozzle 22. The lower end side is formed in a conical shape having an apex angle of about 140 degrees, which is expanded radially outward from a position protruding from the lower surface of the cylinder head 14.
【００１４】延出部１７は、傘状部材１６の下端周縁に
形成され、棚部１２に対面した位置において棚部先端か
ら棚部下側にかけてその形状に沿うように、径方向内方
に屈曲し、さらに先端２３が外方に折り返されている。
そして延出部１７の先端２３における径Ｄ1 と、キャビ
ティ１３の入口１８の径Ｄ0 とは、次式に示す関係とな
るように設定されている。The extending portion 17 is formed on the lower edge periphery of the umbrella-shaped member 16 and is bent inward in the radial direction so as to follow the shape from the tip of the shelf to the lower side of the shelf at a position facing the shelf 12. Further, the tip 23 is folded back outward.
The diameter D 1 at the tip 23 of the extending portion 17 and the diameter D 0 of the inlet 18 of the cavity 13 are set to have the relationship shown in the following equation.
【００１５】0.75＞（Ｄ1 ／Ｄ0 ）＞0.5 … すなわち、強いスキッシュを生成させるための狭い通路
２４を区画するようになっていると共に、その通路２４
が過度に狭くなって絞り損失が大とならないように形成
されているものである。0.75> (D 1 / D 0 )> 0.5 In other words, the narrow passage 24 for generating a strong squish is defined and the passage 24 is formed.
Is formed so that the aperture loss is not excessively narrow and the diaphragm loss is not large.
【００１６】このほか図２に示すように、傘状部材１６
及び延出部１７の燃料噴射ノズル１６の噴孔２５に相応
する位置には、燃料噴霧２６を通過させるための切欠２
７が形成されている。In addition, as shown in FIG. 2, the umbrella-shaped member 16
And a cutout 2 for allowing the fuel spray 26 to pass therethrough at a position corresponding to the injection hole 25 of the fuel injection nozzle 16 of the extension portion 17.
7 are formed.
【００１７】次に本実施例の作用を説明する。Next, the operation of this embodiment will be described.
【００１８】図１に示したように、圧縮行程の終期にお
いて、ピストン１１の上面とシリンダヘッド１４の下面
との隙間にある空気は、入口１８からキャビティ１３内
へと押し込められるが、その通路２４は延出部１７及び
棚部１２によって適宜狭められているので、キャビティ
１３の側壁２０に沿って強制的に導かれる。すなわちこ
の過程で、図中矢印ａにて示したような強い縦方向の渦
流が形成される。As shown in FIG. 1, at the end of the compression stroke, the air in the gap between the upper surface of the piston 11 and the lower surface of the cylinder head 14 is pushed into the cavity 13 through the inlet 18, and the passage 24 thereof is formed. Is appropriately narrowed by the extension 17 and the shelf 12, so that it is forcibly guided along the side wall 20 of the cavity 13. That is, in this process, a strong vertical vortex is formed as shown by the arrow a in the figure.
【００１９】そして図２に示すように、上死点近傍で燃
料噴射ノズル２２の噴孔２５から燃料が噴射されると、
その噴霧２６は縦方向の渦流により適度に混合されて、
高圧縮により速やかに自己着火し、燃焼される。As shown in FIG. 2, when the fuel is injected from the injection hole 25 of the fuel injection nozzle 22 near the top dead center,
The spray 26 is properly mixed by the longitudinal vortex,
High compression quickly ignites and burns.
【００２０】この燃焼による火焔Ｆは、図３に示すよう
に、ピストン１１が下降し始めた状態にあっても延出部
１７がキャビティ１３の入口１８を絞っており、また傘
状部材１６の内側の面によって押さえられて、キャビテ
ィ１３内に閉じこめられる。すなわち、充分な時間が費
やされて完全燃焼される。In the flame F resulting from this combustion, as shown in FIG. 3, the extending portion 17 restricts the inlet 18 of the cavity 13 and the umbrella-shaped member 16 even when the piston 11 is starting to descend. It is pressed by the inner surface and is confined in the cavity 13. That is, sufficient time is spent and complete combustion is performed.
【００２１】その後さらにピストン１１が下降すると、
図４に示すように、キャビティ１３の入口１８の通路面
積が増大し、火焔Ｆは延出部１７と棚部１２との間を通
って、シリンダヘッド１４との隙間へ流出する。このと
き延出部１７の先端２３付近で強い乱れが生成され、火
焔Ｆ内に煤（未燃分）が一部残留しても、この乱れによ
り再燃焼が促進される。After that, when the piston 11 further descends,
As shown in FIG. 4, the passage area of the inlet 18 of the cavity 13 increases, and the flame F flows between the extending portion 17 and the shelf portion 12 and flows into the gap between the cylinder head 14. At this time, strong turbulence is generated in the vicinity of the tip 23 of the extension portion 17, and even if a part of soot (unburned component) remains in the flame F, this turbulence promotes reburning.
【００２２】このように、棚部１２を有してピストン１
１の頂部に形成されたキャビティ１３と、燃料噴射ノズ
ル２２を囲む傘状部材１６と、その下端周縁に適宜形成
された延出部１７とを備えて、圧縮行程の終期に棚部１
２に沿うスキッシュの通路２４を区画するようにしたの
で、絞り損失が増大することなくキャビティ１３内に強
い縦渦流（ａ）を生成させることができ、燃料が適度に
混合されて、良好な燃焼が得られる。また火焔Ｆをキャ
ビティ１３内に適宜時間閉じ込めて完全燃焼させること
ができ、同時に火焔Ｆがキャビティ１３から出て冷却さ
れることを防いで、黒煙の発生を大幅に低減させること
ができる。In this way, the piston 1 having the shelf 12 is provided.
1 has a cavity 13 formed at the top, an umbrella-shaped member 16 surrounding the fuel injection nozzle 22, and an extending portion 17 appropriately formed at the lower end peripheral edge thereof, and the shelf portion 1 is provided at the end of the compression stroke.
Since the squish passage 24 along 2 is partitioned, a strong longitudinal vortex (a) can be generated in the cavity 13 without increasing throttling loss, and the fuel is mixed appropriately and good combustion is achieved. Is obtained. Further, the flame F can be confined in the cavity 13 for a proper time for complete combustion, and at the same time, the flame F can be prevented from coming out of the cavity 13 and being cooled, and the generation of black smoke can be significantly reduced.
【００２３】なお延出部１７は高温になるので、この部
分をセラミックスや耐熱金属材などの耐熱材で成形し
て、耐久性を向上させるようにしてもよい。Since the extension 17 becomes hot, it may be formed of a heat-resistant material such as ceramics or heat-resistant metal to improve its durability.
【００２４】そして以上実施例では、中央に突起部を有
したキャビティを示したが、本発明はこれに限るもので
はなく、適宜な縦渦流が生成し得る形状であればよい。
また傘状部材及び延出部は、キャビティの中央を覆い、
棚部に適宜沿うものであれば、どのような形状でも構わ
ない。In the above embodiments, the cavity having the protrusion at the center is shown, but the present invention is not limited to this, and may be any shape capable of generating an appropriate vertical vortex flow.
Also, the umbrella-shaped member and the extending portion cover the center of the cavity,
Any shape may be used as long as it fits along the shelves.
【００２５】[0025]
【発明の効果】以上要するに本発明によれば、次のよう
な優れた効果を発揮する。In summary, according to the present invention, the following excellent effects are exhibited.
【００２６】ピストンの頂部に棚部を有したキャビティ
を形成すると共に、シリンダヘッドにキャビティの中央
部を覆う傘状部材を設け、圧縮行程の終期に棚部から所
定の間隔を隔てて沿う延出部を形成したので、絞り損失
なく強い縦渦流による良好な燃焼が得られると共に、火
焔を閉じ込めてキャビティから出るのを防ぐことで、黒
煙の発生を大幅に低減させることができる。A cavity having a shelf is formed on the top of the piston, and an umbrella-shaped member is provided on the cylinder head to cover the center of the cavity. The umbrella extends at a predetermined distance from the shelf at the end of the compression stroke. Since the portion is formed, good combustion due to a strong longitudinal vortex can be obtained without throttling loss, and black smoke can be significantly reduced by confining the flame and preventing it from leaving the cavity.
【図１】本発明に係わるディーゼルエンジンの燃焼室の
一実施例を示した側断面図である。FIG. 1 is a side sectional view showing an embodiment of a combustion chamber of a diesel engine according to the present invention.
【図２】図１の作用を説明するための上死点近傍の状態
を示した側断面図である。FIG. 2 is a side sectional view showing a state near top dead center for explaining the operation of FIG.
【図３】図２の次の段階である燃焼行程を示した側断面
図である。FIG. 3 is a side sectional view showing a combustion stroke which is the next stage of FIG.
【図４】図３の次の段階の燃焼行程を示した側断面図で
ある。FIG. 4 is a side sectional view showing a combustion stroke in the next stage of FIG.
【図５】従来のディーゼルエンジンの燃焼室を示した側
断面図である。FIG. 5 is a side sectional view showing a combustion chamber of a conventional diesel engine.
１１ ピストン １２ 棚部 １３ キャビティ １４ シリンダヘッド １５ 中央部 １６ 傘状部材 １７ 延出部 11 Piston 12 Shelf 13 Cavity 14 Cylinder Head 15 Central 16 Umbrella 17 Extension
Claims (1)
ィを形成すると共に、シリンダヘッドに上記キャビティ
の中央部を覆う傘状部材を設け、該傘状部材に、圧縮行
程の終期に上記棚部の先端から下側にかけて所定の間隔
を隔てて沿う延出部を形成したことを特徴とするディー
ゼルエンジンの燃焼室。Claim: What is claimed is: 1. A cavity having a shelf is formed at the top of the piston, and a cylinder head is provided with an umbrella-shaped member that covers the center of the cavity. The umbrella-shaped member is provided with the shelf at the end of the compression stroke. A combustion chamber of a diesel engine, characterized in that an extending portion is formed along a predetermined distance from the tip to the lower side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4120740A JPH05312042A (en) | 1992-05-13 | 1992-05-13 | Combustion chamber of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4120740A JPH05312042A (en) | 1992-05-13 | 1992-05-13 | Combustion chamber of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05312042A true JPH05312042A (en) | 1993-11-22 |
Family
ID=14793814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4120740A Pending JPH05312042A (en) | 1992-05-13 | 1992-05-13 | Combustion chamber of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05312042A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013185455A (en) * | 2012-03-06 | 2013-09-19 | Mazda Motor Corp | Fuel injection valve, and internal combustion engine comprising the same |
-
1992
- 1992-05-13 JP JP4120740A patent/JPH05312042A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013185455A (en) * | 2012-03-06 | 2013-09-19 | Mazda Motor Corp | Fuel injection valve, and internal combustion engine comprising the same |
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