JPH0913972A - Combustion chamber for direct injection type diesel engine - Google Patents
Combustion chamber for direct injection type diesel engineInfo
- Publication number
- JPH0913972A JPH0913972A JP7160627A JP16062795A JPH0913972A JP H0913972 A JPH0913972 A JP H0913972A JP 7160627 A JP7160627 A JP 7160627A JP 16062795 A JP16062795 A JP 16062795A JP H0913972 A JPH0913972 A JP H0913972A
- Authority
- JP
- Japan
- Prior art keywords
- diesel engine
- cavity
- combustion chamber
- fuel
- direct 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
Links
Classifications
-
- 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
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
-
- 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
- F02B23/0645—Details related to the fuel injector or the fuel spray
- F02B23/0648—Means or methods to improve the spray dispersion, evaporation or ignition
- F02B23/0651—Means or methods to improve the spray dispersion, evaporation or ignition the fuel spray impinging on reflecting surfaces or being specially guided throughout the combustion space
-
- 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
- F02B23/0645—Details related to the fuel injector or the fuel spray
- F02B23/0669—Details related to the fuel injector or the fuel spray having multiple fuel spray jets per injector nozzle
-
- 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
- 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
- F02B23/0696—W-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 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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/14—Direct injection into combustion chamber
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、直接噴射式ディーゼル
エンジン（以降、直噴ディーゼルエンジンと言う）の燃
焼室の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a combustion chamber of a direct injection diesel engine (hereinafter referred to as a direct injection diesel engine).
【０００２】[0002]
【従来の技術】直噴ディーゼルエンジンにおいては燃焼
室における燃料の燃焼をスムーズに行わせるため、燃料
噴霧を微粒化し燃焼室内にスワールを発生させて空気と
燃料との混合を促進させる技術は知られており、また、
噴霧は燃焼室壁面に衝突することにより噴霧内への空気
導入が活発化して燃焼が促進されることも広く知られて
いる技術である。 そして、このために燃焼室内にリッ
プを設け、そこへ燃料の噴霧を衝突させるように構成
し、空気導入を活発にするものも提案されている。2. Description of the Related Art In a direct-injection diesel engine, there is known a technique for accelerating the mixing of air and fuel by atomizing the fuel spray to generate swirl in the combustion chamber in order to smoothly burn the fuel in the combustion chamber. And again
It is a widely known technique that the spray collides with the wall surface of the combustion chamber to activate the introduction of air into the spray to promote combustion. For this reason, it has been proposed that a lip is provided in the combustion chamber for making the fuel spray impinge on the lip to activate the air introduction.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記の
技術は燃焼室の形状を検討するに際し、所要の圧縮比か
ら燃焼室の容積が一定の範囲に制限され、ピストン径お
よび燃焼室の容積から燃焼室の直径と深さを決めること
になるが、その際、噴口から燃焼室壁面までの距離と適
切な噴霧到達距離とが必ずしも一致しないという問題が
ある。However, in the above technique, when considering the shape of the combustion chamber, the volume of the combustion chamber is limited to a certain range from the required compression ratio, and the combustion is performed from the piston diameter and the volume of the combustion chamber. Although the diameter and depth of the chamber will be determined, there is a problem that the distance from the nozzle to the wall surface of the combustion chamber does not always match the appropriate spray arrival distance.
【０００４】また、実公平６−４５６２６号公報の技術
が開示されているが、ピストン冠部が屋根形となる、所
謂ペントルーフ形に形成されている場合、ピストンのキ
ャビティから燃料噴射ノズルから噴射された燃料が漏れ
ないようにするものであり、本願の課題を解決するもの
でない。Further, the technique of Japanese Utility Model Publication No. 6-45626 is disclosed. However, when the piston crown portion is formed in a so-called pent roof type, the piston is injected from the fuel injection nozzle from the cavity. It does not leak the fuel and does not solve the problem of the present application.
【０００５】したがって、本発明は直噴ディーゼルエン
ジンの燃焼室内における燃料と空気との混合を促進し、
燃焼を改善する直接噴射式ディーゼルエンジンの燃焼室
を提供することを目的としている。Accordingly, the present invention facilitates the mixing of fuel and air within the combustion chamber of a direct injection diesel engine,
It is an object to provide a combustion chamber of a direct injection diesel engine that improves combustion.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、直接噴
射式ディーゼルエンジンのピストン冠部に円筒形のキャ
ビティを設け、シリンダヘッドの前記キャビティと対応
する位置に設けた燃料噴射ノズルからの燃料噴霧方向に
相対した位置におけるキャビティの壁部に突起を形成
し、その突起は前記ノズル噴孔数と同数形成されてい
る。According to the present invention, a direct injection diesel engine is provided with a cylindrical cavity in the crown of a piston, and fuel from a fuel injection nozzle provided at a position corresponding to the cavity of the cylinder head. Protrusions are formed on the wall portion of the cavity at positions opposite to the spray direction, and the protrusions are formed in the same number as the nozzle injection holes.
【０００７】また、本発明によれば、前記キャビティは
ピストン冠部の中央部に設けられ、前記複数の突起の半
径方向突出量は等しく構成されている。Further, according to the present invention, the cavity is provided in the central portion of the piston crown portion, and the protrusion amounts in the radial direction of the plurality of protrusions are equal.
【０００８】また、本発明によれば、前記キャビティは
ピストン冠部にピストン中心から偏芯して設けられてお
り、前記複数の突起の半径方向突出量は同一でなく構成
されている。Further, according to the present invention, the cavity is provided in the piston crown portion so as to be eccentric from the center of the piston, and the projection amounts in the radial direction of the plurality of projections are not the same.
【０００９】さらに、本発明によれば、 前記突起の半
径方向突出量は、複数の突起先端部から前記燃料噴射ノ
ズルまでの距離が等しくなるよう構成されている。Further, according to the present invention, the projection amount in the radial direction of the projection is configured so that the distances from the tip portions of the projections to the fuel injection nozzle are equal.
【００１０】[0010]
【作用効果の説明】本発明に係る直噴ディーゼルエンジ
ンの燃焼室によれば、燃料噴射ノズルから噴射された燃
料噴霧の到達距離とノズルからキャビティの壁面に設け
られた突起の先端部までの距離とが所要値と一致するよ
う構成されているので、複数の噴口から噴射された燃料
噴霧がそれぞれ相対する突起に衝突して燃料噴霧の乱れ
が大となって燃料と空気との混合が積極的に促進され
る。According to the combustion chamber of the direct injection diesel engine according to the present invention, the reaching distance of the fuel spray injected from the fuel injection nozzle and the distance from the nozzle to the tip of the projection provided on the wall surface of the cavity. And are so configured as to match the required value, the fuel sprays injected from the plurality of nozzles collide with the projections facing each other and the turbulence of the fuel sprays becomes large, and the mixing of the fuel and air is positively performed. Be promoted to.
【００１１】したがって、突起がない場合に燃料噴霧が
キャビティの壁面に衝突して付着する燃料に比して、突
起に衝突した場合は突起の先端部の面積が小であり、適
切スピードで衝突するので、壁面に付着する燃料は減少
し燃焼室内での燃焼状態が向上する。Therefore, when the fuel spray collides with the wall surface of the cavity and adheres to the fuel when there is no protrusion, the area of the tip end of the protrusion is small when the fuel spray collides with the cavity, and the fuel collides at an appropriate speed. Therefore, the fuel adhering to the wall surface is reduced and the combustion state in the combustion chamber is improved.
【００１２】したがって、スモークの発生が抑制され、
排ガス中の未燃焼燃料は減少するので、排ガスによる環
境汚染を防止することが出来る。Therefore, the generation of smoke is suppressed,
Since the unburned fuel in the exhaust gas is reduced, it is possible to prevent environmental pollution due to the exhaust gas.
【００１３】また、キャビティがピストン冠部の中心か
ら偏芯している場合は、突起の半径方向突出量を変化さ
せ、燃料噴射ノズルから突起先端部までの距離を等しく
すれば同様の作用効果を得ることが出来る。Further, when the cavity is eccentric from the center of the piston crown, the same effect can be obtained if the amount of protrusion of the protrusion in the radial direction is changed and the distance from the fuel injection nozzle to the protrusion tip is made equal. You can get it.
【００１４】[0014]
【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.
【００１５】図１は本発明に係る直噴ディーゼルエンジ
ンの燃焼室の実施例のピストン冠部の平面図を示し、ピ
ストン１の冠部１ａには円筒状のキャビティ２が設けら
れ、そのキャビティ２の壁面２ａにはピストン１の中心
に向かって半径方向に延びる突起３が設けられている。
そして、その突起３はピストンの中央に来るようシリン
ダヘッド１５に取り付けられた燃料噴射ノズル１０（図
１のＸ−Ｘ断面を示す図２を参照）の等間隔に設けられ
た噴口の数（図示の例では５個）と同じ数だけ設けられ
ている。FIG. 1 is a plan view of a piston crown portion of an embodiment of a combustion chamber of a direct injection diesel engine according to the present invention, in which the crown portion 1a of the piston 1 is provided with a cylindrical cavity 2. The wall surface 2a of the is provided with a protrusion 3 extending in the radial direction toward the center of the piston 1.
Then, the number of the injection holes provided at equal intervals in the fuel injection nozzle 10 (see FIG. 2 showing the XX cross section of FIG. 1) attached to the cylinder head 15 so that the protrusion 3 comes to the center of the piston (illustration) In the example of 5), the same number is provided.
【００１６】また、その突起３の先端部３ａは燃料噴霧
の突起先端部３ａにおける幅Ｂとほぼ同じとなるよう形
成されている。ここで、符号５はインテークバルブ１２
のためのバルブリセス、符号６はエクゾーストバルブ１
３のためのバルブリセスをそれぞれ示している。The tip 3a of the projection 3 is formed to have a width B substantially equal to that of the projection 3a of the fuel spray. Here, reference numeral 5 is the intake valve 12.
Valve recess for, 6 is exhaust valve 1
3 shows valve recesses for No. 3 respectively.
【００１７】また、図２において、噴射された燃料噴霧
４は、その到達距離が最適となる位置に突起３の先端部
３ａが来るよう突起３の高さＨが構成されている。ここ
で、符号１１はノズル１０の噴口、符号１６はバルブイ
ンサートをそれぞれ示している。Further, in FIG. 2, the height H of the protrusion 3 of the injected fuel spray 4 is configured so that the tip 3a of the protrusion 3 comes to a position where the reaching distance is optimum. Here, reference numeral 11 indicates an injection port of the nozzle 10, and reference numeral 16 indicates a valve insert.
【００１８】以下，作用について説明する。The operation will be described below.
【００１９】図２を参照して、燃料噴射ノズル１０の噴
口１１から噴射された燃料噴霧４はキャビティ２の壁面
に設けられた突起３の先端部３ａに衝突する。このとき
燃料噴霧の到達距離が突起３の先端と一致して燃料が十
分に微細化される距離に突起３の先端部３ａがあるの
で、燃料はキャビティ内の空気とよく混合し燃焼する。
キャビティ２の容積は必要な圧縮比から求められ、それ
と関連する寸法としてキャビティの直径が決められるの
で、その壁面２ａでは燃料噴霧が壁に付着して空気と十
分に混合しない場合が多く、その時には燃焼が悪くなり
スモークが発生し、未燃焼燃料が排ガスに混じり、環境
汚染の原因となる。With reference to FIG. 2, the fuel spray 4 injected from the injection port 11 of the fuel injection nozzle 10 collides with the tip portion 3a of the projection 3 provided on the wall surface of the cavity 2. At this time, the tip end 3a of the protrusion 3 is located at a distance where the fuel spray reaches the tip of the protrusion 3 and the fuel is sufficiently atomized, so that the fuel mixes well with the air in the cavity and burns.
Since the volume of the cavity 2 is obtained from the required compression ratio, and the diameter of the cavity is determined as a dimension related to the required compression ratio, the fuel spray is often attached to the wall 2a and does not sufficiently mix with air on the wall surface 2a. Combustion deteriorates, smoke is generated, unburned fuel mixes with exhaust gas, and causes environmental pollution.
【００２０】しかし、本願では突起３を設け、キャビテ
ィの直径と関係なくその高さＨをノズルから噴射された
燃料噴霧が適切な距離で突起３に衝突するよう設定し、
空気とよく混合するように構成されているので、良好な
燃焼が得られる。However, in the present application, the projection 3 is provided, and the height H thereof is set so that the fuel spray injected from the nozzle collides with the projection 3 at an appropriate distance regardless of the diameter of the cavity,
Good combustion is obtained because it is configured to mix well with air.
【００２１】図３は本発明の別の実施例を示し、ピスト
ン２１の冠部２１ａにピストンの中心から偏芯してキャ
ビティ２２が設けられ、図示しないシリンダヘッドに設
けられた燃量噴射ノズルがキャビティの中心から偏芯し
ている場合で、キャビティ２２の壁面２２ａに設けられ
た突起２３はその先端部２４がノズルの中心から同じ距
離になるよう高さが異なった２３ａ〜２３ｅで構成され
ている。ここで符号２５はインテークバルブのバルブリ
セス、符号２６はエキゾーストバルブのバルブリセスを
それぞれ示している。FIG. 3 shows another embodiment of the present invention in which a crown 22a of a piston 21 is provided with a cavity 22 eccentrically from the center of the piston, and a fuel injection nozzle provided in a cylinder head (not shown) is provided. In the case of being eccentric from the center of the cavity, the protrusion 23 provided on the wall surface 22a of the cavity 22 is composed of 23a to 23e having different heights so that the tip portion 24 thereof is at the same distance from the center of the nozzle. There is. Here, reference numeral 25 indicates a valve recess of the intake valve, and reference numeral 26 indicates a valve recess of the exhaust valve.
【００２２】上記のように高さの異なる突起２３を設け
ることで第１実施例と同様な作用効果を得ることが出来
る。By providing the projections 23 having different heights as described above, it is possible to obtain the same operational effect as that of the first embodiment.
【００２３】[0023]
【発明の効果】本発明は上記のように構成されており、
以下の優れた効果を奏することができる。 （１） 燃料噴霧は突起と衝突することで乱れが大とな
り空気との混合が促進される。 （２） 燃料噴霧の到達距離と突起の先端とを燃焼条件
が最適となるよう合わせることが出来、燃料噴霧が衝突
する面積も小であり、未燃焼燃料を減少できる。 （３） したがって、キャビティ内の燃焼状態が向上
し、スモークの発生を抑制し、排ガス中の汚染物質が減
少する。The present invention is configured as described above,
The following excellent effects can be obtained. (1) When the fuel spray collides with the protrusions, the turbulence becomes large and mixing with the air is promoted. (2) The reaching distance of the fuel spray and the tip of the protrusion can be matched so as to optimize the combustion conditions, the area where the fuel spray collides is small, and unburned fuel can be reduced. (3) Therefore, the combustion state in the cavity is improved, the generation of smoke is suppressed, and the pollutants in the exhaust gas are reduced.
【図１】本発明の一実施例を示すピストン冠部の平面
図。FIG. 1 is a plan view of a piston crown portion showing an embodiment of the present invention.
【図２】図１のＸ−Ｘ断面図。FIG. 2 is a sectional view taken along line XX of FIG.
【図３】本発明の別の実施例を示すピストン冠部の平面
図。FIG. 3 is a plan view of a piston crown portion showing another embodiment of the present invention.
１、２１・・・ピストン ２、２２・・・キャビティ ３、２３・・・突起 ４・・・燃料噴霧 ５、２５・・・インテークバルブのバルブリセス ６、２６・・・エキゾーストバルブのバルブリセス １０・・・燃料噴射ノズル １１・・・噴口 Ｎ・・・ノズルセンター 1, 21 ... Piston 2, 22 ... Cavity 3, 23 ... Protrusion 4 ... Fuel spray 5, 25 ... Intake valve valve recess 6, 26 ... Exhaust valve valve recess 10 ...・ Fuel injection nozzle 11 ・ ・ ・ Nozzle N ・ ・ ・ Nozzle center
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ０２Ｍ 61/14 ３１０ Ｆ０２Ｍ 61/14 ３１０Ｅ ３１０Ｄ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location F02M 61/14 310 F02M 61/14 310E 310D
Claims (4)
ン冠部に円筒形のキャビティを設け、シリンダヘッドの
前記キャビティと対応する位置に設けた燃料噴射ノズル
からの燃料噴霧方向に相対した位置におけるキャビティ
の壁部に突起を形成し、その突起は前記ノズル噴孔数と
同数形成されていることを特徴とする直接噴射式ディー
ゼルエンジンの燃焼室。1. A direct injection type diesel engine is provided with a cylindrical cavity in a crown portion of a piston, and a wall of the cavity at a position opposite to a fuel spray direction from a fuel injection nozzle provided at a position corresponding to the cavity of a cylinder head. A combustion chamber of a direct injection type diesel engine, characterized in that projections are formed on the portion, and the projections are formed in the same number as the nozzle injection holes.
に設けられ、前記複数の突起の半径方向突出量は等しく
構成された請求項１に記載の直接噴射式ディーゼルエン
ジンの燃焼室。2. The combustion chamber of a direct injection diesel engine according to claim 1, wherein the cavity is provided in a central portion of a piston crown portion, and the protrusion amounts of the plurality of protrusions in the radial direction are equal to each other.
ン中心から偏芯して設けられており、前記複数の突起の
半径方向突出量は同一でなく構成された請求項１に記載
の直接噴射式ディーゼルエンジンの燃焼室。3. The direct injection diesel engine according to claim 1, wherein the cavity is provided in the piston crown portion so as to be eccentric from the center of the piston, and the protrusion amounts in the radial direction of the plurality of protrusions are not the same. Engine combustion chamber.
起先端部から前記燃料噴射ノズルの噴口までの距離が等
しくなるよう構成された請求項３に記載の直接噴射式デ
ィーゼルエンジンの燃焼室。4. The combustion chamber of a direct injection diesel engine according to claim 3, wherein the projections in the radial direction are configured such that the distances from the tips of the projections to the injection port of the fuel injection nozzle are equal. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7160627A JPH0913972A (en) | 1995-06-27 | 1995-06-27 | Combustion chamber for direct injection type diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7160627A JPH0913972A (en) | 1995-06-27 | 1995-06-27 | Combustion chamber for direct injection type diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0913972A true JPH0913972A (en) | 1997-01-14 |
Family
ID=15719028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7160627A Pending JPH0913972A (en) | 1995-06-27 | 1995-06-27 | Combustion chamber for direct injection type diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0913972A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010056318A (en) * | 1999-12-15 | 2001-07-04 | 이계안 | Piston having combustion chamber and mixer in which double voltex is formed |
| FR2859244A1 (en) * | 2003-08-28 | 2005-03-04 | Renault Sa | Piston for compression ignition internal combustion engine, has boss formed in flange to create aerodynamic turbulence at level of input edge of bowl during preparation of fuel-air mixture and combustion |
| JP2014043782A (en) * | 2012-08-24 | 2014-03-13 | Mazda Motor Corp | Combustion chamber structure of engine |
| WO2018096592A1 (en) * | 2016-11-22 | 2018-05-31 | マツダ株式会社 | Diesel engine |
| JP2021113505A (en) * | 2020-01-16 | 2021-08-05 | トヨタ自動車株式会社 | Piston of internal combustion engine and method for manufacturing the same |
| CN113958403A (en) * | 2021-10-26 | 2022-01-21 | 天津大学 | Engine combustion system, diesel engine and combustion control method thereof |
-
1995
- 1995-06-27 JP JP7160627A patent/JPH0913972A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010056318A (en) * | 1999-12-15 | 2001-07-04 | 이계안 | Piston having combustion chamber and mixer in which double voltex is formed |
| FR2859244A1 (en) * | 2003-08-28 | 2005-03-04 | Renault Sa | Piston for compression ignition internal combustion engine, has boss formed in flange to create aerodynamic turbulence at level of input edge of bowl during preparation of fuel-air mixture and combustion |
| JP2014043782A (en) * | 2012-08-24 | 2014-03-13 | Mazda Motor Corp | Combustion chamber structure of engine |
| WO2018096592A1 (en) * | 2016-11-22 | 2018-05-31 | マツダ株式会社 | Diesel engine |
| JP2021113505A (en) * | 2020-01-16 | 2021-08-05 | トヨタ自動車株式会社 | Piston of internal combustion engine and method for manufacturing the same |
| CN113958403A (en) * | 2021-10-26 | 2022-01-21 | 天津大学 | Engine combustion system, diesel engine and combustion control method thereof |
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