JPH0241305Y2 - - Google Patents
Info
- Publication number
- JPH0241305Y2 JPH0241305Y2 JP1985024110U JP2411085U JPH0241305Y2 JP H0241305 Y2 JPH0241305 Y2 JP H0241305Y2 JP 1985024110 U JP1985024110 U JP 1985024110U JP 2411085 U JP2411085 U JP 2411085U JP H0241305 Y2 JPH0241305 Y2 JP H0241305Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- injection valve
- fuel
- cylinder cover
- diesel engine
- 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.)
- Expired
Links
- 238000002347 injection Methods 0.000 claims description 49
- 239000007924 injection Substances 0.000 claims description 49
- 239000000446 fuel Substances 0.000 claims description 40
- 238000002485 combustion reaction Methods 0.000 claims description 18
- 239000000567 combustion gas Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はサイドインジエクシヨン燃焼方式のデ
イーゼルエンジンに好適なシリンダカバーに関す
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cylinder cover suitable for a side-injection combustion type diesel engine.
一般にサイドインジエクシヨン燃焼方式のデイ
ーゼルエンジンの燃焼室には、第４図に示すよう
にシリンダカバー２とピストン３とから形成され
る燃焼室１の上部周辺部に、複数個の燃料噴射弁
４が装備されている。これらの燃料噴射弁４は、
先端の燃料噴射弁チツプ１１から図中矢印で示す
方向に燃料を噴射することにより、燃焼室１に燃
料を供給するものである。
In general, the combustion chamber of a side-injection combustion type diesel engine has a plurality of fuel injection valves 4 located around the upper part of the combustion chamber 1, which is formed by a cylinder cover 2 and a piston 3, as shown in FIG. is equipped. These fuel injection valves 4 are
Fuel is supplied to the combustion chamber 1 by injecting fuel from a fuel injection valve tip 11 at the tip in the direction indicated by the arrow in the figure.
燃料噴射弁チツプ１１は第５図に示すように燃
料噴射弁本体１２内に設けられた自動弁１３を開
弁させることにより、燃料油通路１４から導入さ
れた高圧燃料がチツプ先端の円筒状の袋部１５に
流入し、この袋部１５の燃焼室１中央側に設けら
た複数の噴射ノズル１６から燃料を噴射するよう
に構成されている。なお図中５はシリンダライ
ナ、６は排気弁、７は排気弁座、１７は冷却水通
路、１８は燃料噴射弁ホルダーである。 As shown in FIG. 5, the fuel injection valve tip 11 opens the automatic valve 13 provided in the fuel injection valve body 12, so that high-pressure fuel introduced from the fuel oil passage 14 flows through the cylindrical tip of the tip. The fuel is configured to flow into the bag portion 15 and be injected from a plurality of injection nozzles 16 provided on the central side of the combustion chamber 1 of the bag portion 15 . In the figure, 5 is a cylinder liner, 6 is an exhaust valve, 7 is an exhaust valve seat, 17 is a cooling water passage, and 18 is a fuel injection valve holder.
このようにして燃焼室１に噴射された燃料は、
第６図に示すように空気スクールに乗つて燃焼室
１内に噴霧状に拡散し、やがて火炎を形成して燃
焼するが、燃料噴射弁４の先端部は流速の高い燃
焼室１の上部周辺部で高温の燃焼ガスにさらされ
るため、肉厚の薄い袋部１５は十分に熱を逃がす
ことができず、高温腐食などが発生するおそれが
あつた。
The fuel injected into the combustion chamber 1 in this way is
As shown in Fig. 6, the air school diffuses into the combustion chamber 1 in the form of a spray, and eventually forms a flame and burns. Since the bag portion 15 is exposed to high-temperature combustion gas, the thin-walled bag portion 15 cannot sufficiently release heat, and there is a risk of high-temperature corrosion.
本考案はこのような欠点を解消するためになさ
れたもので、その目的とするところは、燃料噴射
弁先端部の燃焼ガスによる高温腐食等を防止する
ことができ、サイドインジエクシヨン燃焼方式の
デイーゼルエンジンに好適なシリンダカバーを提
供することにある。 The present invention was developed to eliminate these drawbacks, and its purpose is to prevent high-temperature corrosion caused by combustion gas at the tip of the fuel injector, and to improve the side-injection combustion method. An object of the present invention is to provide a cylinder cover suitable for a diesel engine.
本考案は上記の目的を達成するために、シリン
ダカバーの燃料噴射弁装着部に燃料噴射弁の噴射
ノズルと反対側の先端部表面を覆う筒状内面を設
けるとともに、上記噴射ノズル側の燃料噴射方向
に凹部を設けたことを特徴とするものである。
In order to achieve the above object, the present invention provides a cylindrical inner surface that covers the front end surface of the fuel injector on the side opposite to the injection nozzle in the fuel injection valve mounting part of the cylinder cover, and also The feature is that a recess is provided in the direction.
上記構成を特徴とする本考案によれば、燃料噴
射弁の噴射ノズルと反対側の先端部表面はシリン
ダカバーによつて覆われるので高温の燃焼ガスに
さられされず、燃料噴射弁が受ける熱量を低減す
ることができる。
According to the present invention characterized by the above configuration, the surface of the tip of the fuel injection valve on the side opposite to the injection nozzle is covered by the cylinder cover, so that it is not exposed to high-temperature combustion gas, and the amount of heat received by the fuel injection valve is can be reduced.
以下、本考案の一実施例を第１図ないし第３図
を参照して説明する。
Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 3.
第１図は本考案のシリンダカバー１００を装着
したサイドインジエクシヨン・デイーゼルエンジ
ンの燃焼室を示す断面図で、図中１は燃焼室、３
はピストン、４は燃料噴射弁、５はシリンダライ
ナ、６は排気弁、７は排気弁座である。 FIG. 1 is a sectional view showing the combustion chamber of a side-injection diesel engine equipped with the cylinder cover 100 of the present invention, in which 1 is the combustion chamber, 3
4 is a piston, 4 is a fuel injection valve, 5 is a cylinder liner, 6 is an exhaust valve, and 7 is an exhaust valve seat.
上記シリンダカバー１００の燃料噴射弁装着部
には、第２図に示すように燃料噴射弁４の噴射ノ
ズル１６と反対側の燃料噴射弁チツプ１１表面を
覆う筒状内面１０１が設けられている。また、噴
射ノズル１６側の燃料噴射方向には凹部１０２が
設けられ、この凹部１０２は第３図に示すように
噴射ノズル１６から噴射された燃料が空気スクー
ルに乗つて均一に燃焼室１内に拡散するように扇
状に形成されている。 As shown in FIG. 2, the fuel injection valve mounting portion of the cylinder cover 100 is provided with a cylindrical inner surface 101 that covers the surface of the fuel injection valve tip 11 on the side opposite to the injection nozzle 16 of the fuel injection valve 4. Further, a recess 102 is provided in the fuel injection direction on the injection nozzle 16 side, and as shown in FIG. It is shaped like a fan so that it spreads.
このように噴射ノズル１６と反対側の燃料噴射
弁チツプ１１表面をシリンダカバー１００によつ
て覆うことにより、燃焼室１内に露出する燃料噴
射弁チツプ１１の表面積が少なくなり、高温の燃
焼ガスから受ける熱量が減少するので、燃料噴射
弁４の先端部温度を十分に低い温度に抑えること
が可能となる。したがつて、本実施例によれば燃
料噴射弁４先端部の燃焼ガスによる高温腐食等を
防止できるとともに、安定した燃料供給を行なう
ことができる。 By covering the surface of the fuel injector tip 11 on the side opposite to the injection nozzle 16 with the cylinder cover 100, the surface area of the fuel injector tip 11 exposed in the combustion chamber 1 is reduced, thereby preventing high-temperature combustion gas from being exposed. Since the amount of heat received is reduced, it becomes possible to suppress the temperature of the tip of the fuel injection valve 4 to a sufficiently low temperature. Therefore, according to this embodiment, it is possible to prevent high-temperature corrosion caused by combustion gas at the tip of the fuel injection valve 4, and to provide stable fuel supply.
以上説明したように本考案によれば、シリンダ
ライナの燃料噴射弁装着部に燃料噴射弁の噴射ノ
ズルと反対側の先端部表面を覆う筒状内面を設け
るとともに、上記噴射ノズル側の燃料噴射方向に
凹部を設けたので、燃料噴射弁先端部の燃焼ガス
による高温腐食等を防止でき、サイドインジエク
シヨン燃焼方式のデイーゼルエンジンに好適なシ
リンダカバーを提供できる。
As explained above, according to the present invention, the fuel injection valve mounting portion of the cylinder liner is provided with a cylindrical inner surface that covers the front end surface on the side opposite to the injection nozzle of the fuel injection valve, and the fuel injection direction on the side of the injection nozzle is provided. Since the concave portion is provided in the cylinder cover, it is possible to prevent high-temperature corrosion caused by combustion gas at the tip of the fuel injection valve, and it is possible to provide a cylinder cover suitable for a side-injection combustion type diesel engine.
第１図ないし第３図は本考案の一実施例を示す
図で、第１図は本考案のシリンダカバーを装着し
たサイドインジエクシヨン・デイーゼルエンジン
の燃焼室を示す断面図、第２図は第１図の部群
細図、第３図は第２図の−矢視断面図、第４
図ないし第６図は従来例を示す図で、第４図は従
来のシリンダカバーを装着したサイドインジエク
シヨン・デイーゼルエンジンの燃焼室を示す断面
図、第５図は第４図の部詳細図、第６図は燃料
噴射弁から噴射された燃料の流れを示す説明図で
ある。
１……燃焼室、３……ピストン、４……燃料噴
射弁、５……排気弁、６……シリンダライナー、
１１……燃料噴射弁チツプ、１２……燃料噴射弁
本体、１３……自動弁、１４……燃料油通路、１
５……袋部、１６……噴射ノズル、１７……冷却
水通路、１８……燃料噴射弁ホルダー、１００…
…シリンダカバー、１０１……筒状内面、１０２
……凹部。
Figures 1 to 3 are views showing one embodiment of the present invention, in which Figure 1 is a sectional view showing the combustion chamber of a side-injection diesel engine equipped with the cylinder cover of the present invention, and Figure 2 is a cross-sectional view showing the combustion chamber of a side-injection diesel engine equipped with the cylinder cover of the present invention. Fig. 1 is a detailed view of the parts, Fig. 3 is a sectional view taken along the - arrow in Fig. 2,
Figures 6 through 6 show conventional examples, Figure 4 is a sectional view showing the combustion chamber of a side-injection diesel engine equipped with a conventional cylinder cover, and Figure 5 is a detailed view of the part shown in Figure 4. , FIG. 6 is an explanatory diagram showing the flow of fuel injected from the fuel injection valve. 1... Combustion chamber, 3... Piston, 4... Fuel injection valve, 5... Exhaust valve, 6... Cylinder liner,
11...Fuel injection valve chip, 12...Fuel injection valve body, 13...Automatic valve, 14...Fuel oil passage, 1
5...Bag portion, 16...Injection nozzle, 17...Cooling water passage, 18...Fuel injection valve holder, 100...
... Cylinder cover, 101 ... Cylindrical inner surface, 102
...Concavity.
Claims (1)
ドインジエクシヨン燃焼方式のデイーゼルエンジ
ンにおいて、上記デイーゼルエンジンのシリンダ
カバーの燃料噴射弁装着部に燃料噴射弁の噴射ノ
ズルと反対側の先端部表面を覆う筒状内面を設け
るとともに、上記噴射ノズル側の燃料噴射方向に
凹部を設けたことを特徴とするデイーゼルエンジ
ンのシリンダカバー。 In a side-injection combustion type diesel engine having a fuel injection valve near the upper part of the combustion chamber, the front end surface of the fuel injection valve on the side opposite to the injection nozzle is attached to the fuel injection valve mounting part of the cylinder cover of the diesel engine. A cylinder cover for a diesel engine, characterized in that it is provided with a cylindrical inner surface for covering and a recessed portion in the fuel injection direction on the injection nozzle side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985024110U JPH0241305Y2 (en) | 1985-02-20 | 1985-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985024110U JPH0241305Y2 (en) | 1985-02-20 | 1985-02-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61140124U JPS61140124U (en) | 1986-08-30 |
| JPH0241305Y2 true JPH0241305Y2 (en) | 1990-11-02 |
Family
ID=30517960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985024110U Expired JPH0241305Y2 (en) | 1985-02-20 | 1985-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0241305Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3528804A1 (en) * | 1985-08-06 | 1987-02-19 | Sulzer Ag | Fuel injection arrangement of a piston internal combustion engine |
| DK178655B1 (en) * | 2015-03-20 | 2016-10-17 | Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland | Fuel valve for injecting fuel into a combustion chamber of a large self-igniting turbocharged two-stroke internal combustion engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2970420A (en) * | 1958-09-22 | 1961-02-07 | Rudolf B Schmidt | Crop pickup attachment for combines |
| US3572018A (en) * | 1969-02-17 | 1971-03-23 | Vernon P Broussard | Attachment to sugar cane harvester |
-
1985
- 1985-02-20 JP JP1985024110U patent/JPH0241305Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2970420A (en) * | 1958-09-22 | 1961-02-07 | Rudolf B Schmidt | Crop pickup attachment for combines |
| US3572018A (en) * | 1969-02-17 | 1971-03-23 | Vernon P Broussard | Attachment to sugar cane harvester |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61140124U (en) | 1986-08-30 |
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