JPH01170714A - Combustion apparatus for diesel engine - Google Patents
Combustion apparatus for diesel engineInfo
- Publication number
- JPH01170714A JPH01170714A JP32843687A JP32843687A JPH01170714A JP H01170714 A JPH01170714 A JP H01170714A JP 32843687 A JP32843687 A JP 32843687A JP 32843687 A JP32843687 A JP 32843687A JP H01170714 A JPH01170714 A JP H01170714A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- combustion chamber
- diesel engine
- combustion
- axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 27
- 239000000446 fuel Substances 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
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
- 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
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はディーゼル機関の燃焼装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a combustion device for a diesel engine.
第４図は従来形２燃料弁サイドインノ工クシヨン式ディ
ーゼル機関の要部断面図である、図において０１はシリ
ンダヘッド、０２はシリンダライナ、０３はピストン、
０４は燃焼室で通常略球形又は円筒形に形成されている
。０５は燃料弁、０６は燃料噴霧、ＳＷは空気スワール
である。さらに第５図は噴霧火炎の状態を示す説明図で
、０７は噴霧火炎で・各燃弁が３個の噴口を有する場合
が図示されている。Figure 4 is a cross-sectional view of the main parts of a conventional two-fuel valve side injection type diesel engine. In the figure, 01 is the cylinder head, 02 is the cylinder liner, 03 is the piston,
04 is a combustion chamber which is usually formed into a substantially spherical or cylindrical shape. 05 is a fuel valve, 06 is a fuel spray, and SW is an air swirl. Furthermore, FIG. 5 is an explanatory diagram showing the state of the spray flame, where 07 is the spray flame and each fuel valve has three nozzles.
燃料弁から噴射された燃料は、空気スワールによシ混合
を促され進行方向を変え、ピストンキャビティ内を旋回
しながら発達する。通常ピストンキャビティの水平断面
が円形状に形成された２燃料弁式サイドインジェクショ
ンシステムでは、燃料弁からの噴射ひろがシ可能範囲、
すなわち燃焼室中央部から空気スワールの燃料弁下流側
の燃焼室側壁までの間を燃料弁から見た角度が小さいた
め、相隣る噴霧火炎め干渉が避けられず、燃焼効率が低
下して燃費率み悪化を招いている。The fuel injected from the fuel valve is mixed by the air swirl, changes its traveling direction, and develops while swirling inside the piston cavity. Normally, in a two-fuel valve type side injection system in which the horizontal cross section of the piston cavity is formed into a circular shape, the injection width from the fuel valve is within the possible range.
In other words, since the angle between the central part of the combustion chamber and the side wall of the combustion chamber on the downstream side of the air swirl of the fuel valve when viewed from the fuel valve is small, interference between adjacent sprays and flames is unavoidable, reducing combustion efficiency and reducing fuel consumption. This is causing poor leadership.
本発明の目的は前記従来装置の問題点を解消し、相隣る
噴霧火炎の干渉を避け、燃焼効率が高く燃費率が良好な
ディーゼル機関を提供するにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the conventional apparatus, avoid interference between adjacent spray flames, and provide a diesel engine with high combustion efficiency and good fuel efficiency.
本発明に係るディーゼル機関の燃焼装置はピストン頂部
にピストンキャビティよシなる燃焼室を有すると共に、
シリンダヘッドの前記燃焼室の外周付近に２本の燃料弁
を有し、さらにそれぞれの燃料弁に複数の噴口を有する
サイドインジェクションタイプの直接噴射式ディーゼル
機関において：前記燃焼室の水平断面の形状を直交する
２本の対称軸を有する長円状に形成すると共に、前記２
本の対称軸のうちの短軸上に前記２本の燃料弁を配設し
たことを特徴としている。The combustion device for a diesel engine according to the present invention has a combustion chamber such as a piston cavity at the top of the piston, and
In a side injection type direct injection diesel engine that has two fuel valves near the outer periphery of the combustion chamber in the cylinder head and each fuel valve has a plurality of injection ports: It is formed into an elliptical shape having two orthogonal symmetry axes, and the two
It is characterized in that the two fuel valves are arranged on the short axis of the axis of symmetry of the book.
上記発明によれば、その構成上よシ相隣る噴霧火炎の干
渉による機関性能の低下を防止できる。According to the above invention, it is possible to prevent deterioration of engine performance due to interference between adjacent spray flames due to its structure.
以下第１〜３図を参照し本発明の一実施例について説明
する。第１図は本発明による一実施例の燃焼室における
作用説明図、第２図は第１図の■−■断面図、第３図は
第１図の■−■断面図である。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. FIG. 1 is an explanatory view of the operation in a combustion chamber of an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line ■-■ in FIG.
図においてピストン頂面に設けられた燃焼室４の水平断
面は直交するＡＣ、ＢＤ直線よりなる２本の対称軸Ｘ、
Ｙを有している。さらにこのピストンキャビティの水平
断面が第１図のようにだ円形のときその対称軸の長さは
それぞれ貰及び面の長さとなシ、短軸ＡＣである対称軸
Ｘ−Ｘ上にサイドインジェクションを構成する３噴口を
有する２本の燃料弁５が配設されている。第１図中の矢
印は、ピストン頂部内に設けられた燃焼室内の空気スワ
ールを示し、７は噴霧火炎を示している。In the figure, the horizontal cross section of the combustion chamber 4 provided on the top surface of the piston has two axes of symmetry X consisting of orthogonal lines AC and BD,
It has Y. Furthermore, when the horizontal cross section of this piston cavity is oval as shown in Figure 1, the lengths of its symmetry axes are the same as the lengths of the piston and surface, respectively, and side injection is carried out on the symmetry axis X-X, which is the short axis AC. Two fuel valves 5 each having three injection ports are provided. The arrows in FIG. 1 indicate the air swirl within the combustion chamber located within the top of the piston, and 7 indicates the atomizing flame.
次に上記実施例の作用について説明する。Next, the operation of the above embodiment will be explained.
前記のとおシ燃焼室４の横断面がだ円形をなし、しかも
２本の燃料弁５の配置が第２図のように短軸ＡＣ上に設
けられているため、燃焼室の平面図である第１図におい
て、燃料噴射方向の範囲即ち短軸上の燃料弁から燃焼室
へ噴射可能な噴射ひろがり可能角が第５図の従来例にく
らべひろくな９実施例のように３噴口のような燃料弁に
おいても相隣る噴霧火炎の干渉を充分に回避することが
できる。This is a plan view of the combustion chamber because the cross section of the combustion chamber 4 is oval and the two fuel valves 5 are arranged on the short axis AC as shown in FIG. In Fig. 1, the range of the fuel injection direction, that is, the possible injection spread angle at which the fuel can be injected from the fuel valve on the short axis into the combustion chamber, is wider than that of the conventional example shown in Fig. 5. Also in the fuel valve, interference between adjacent spray flames can be sufficiently avoided.
本発明に係るディーゼル機関の燃焼装置を前記のとおり
構成したので、多噴口ノズルを使用した場合においても
相隣る噴霧火炎の干渉が回避でき、燃焼効率が高く燃費
率の良好なディーゼル機関が実現できる。Since the diesel engine combustion device according to the present invention is configured as described above, interference between adjacent spray flames can be avoided even when a multi-nozzle is used, and a diesel engine with high combustion efficiency and good fuel efficiency can be realized. can.
第１図は本発明による実施例の燃焼室内での噴霧火炎の
状況を示す作用説明図、第２図は第１図の■−■断面図
、第３図は第１図の■−■断面図、第４図は従来形２燃
料弁サイドインノ工クシヨン式ディーゼル機関の要部断
面図、第５図は噴霧火炎の状態を示す説明図である。
４・・・燃焼室、５・・・燃料弁、ＡＣ・・・短軸、Ｂ
Ｄ・・・長軸。
第１図
第２図
第３図Fig. 1 is an action explanatory diagram showing the situation of the spray flame in the combustion chamber of the embodiment according to the present invention, Fig. 2 is a cross-sectional view taken along ■-■ in Fig. 1, and Fig. 3 is a cross-sectional view taken along ■-■ in Fig. 1. 4 are sectional views of essential parts of a conventional two-fuel valve side injection type diesel engine, and FIG. 5 is an explanatory view showing the state of the spray flame. 4... Combustion chamber, 5... Fuel valve, AC... Short shaft, B
D...Long axis. Figure 1 Figure 2 Figure 3
Claims (1)
すると共に、シリンダヘッドの同燃焼室の外周付近に２
本の燃料弁を有し、さらにそれぞれの燃料弁に複数の噴
口を有するサイドインジェクション直接噴射式ディーゼ
ル機関において；前記燃焼室の水平断面形状を直交する
２本の対称軸を有する長円状に形成すると共に、前記２
本の対称軸のうちの短軸上に前記２本の燃料弁を配設し
たことを特徴とするディーゼル機関の燃焼装置。It has a combustion chamber consisting of a piston cavity at the top of the piston, and two cylinders near the outer periphery of the combustion chamber in the cylinder head.
In a side-injection direct injection diesel engine having two fuel valves and each fuel valve having a plurality of nozzles; In addition, the above 2
A combustion device for a diesel engine, characterized in that the two fuel valves are disposed on the short axis of the axis of symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32843687A JPH01170714A (en) | 1987-12-26 | 1987-12-26 | Combustion apparatus for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32843687A JPH01170714A (en) | 1987-12-26 | 1987-12-26 | Combustion apparatus for diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01170714A true JPH01170714A (en) | 1989-07-05 |
Family
ID=18210247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32843687A Pending JPH01170714A (en) | 1987-12-26 | 1987-12-26 | Combustion apparatus for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01170714A (en) |
-
1987
- 1987-12-26 JP JP32843687A patent/JPH01170714A/en active Pending
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