JPH0515917B2 - - Google Patents
Info
- Publication number
- JPH0515917B2 JPH0515917B2 JP60151423A JP15142385A JPH0515917B2 JP H0515917 B2 JPH0515917 B2 JP H0515917B2 JP 60151423 A JP60151423 A JP 60151423A JP 15142385 A JP15142385 A JP 15142385A JP H0515917 B2 JPH0515917 B2 JP H0515917B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel valve
- fuel
- cooling water
- tip
- hole
- 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 - Lifetime
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
- 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
- Fuel-Injection Apparatus (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はデイーゼルエンジンの燃料弁に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fuel valve for a diesel engine.
従来のサイドインジエクシヨン燃料方式の２サ
イクルデイーゼルエンジンの燃料室を第５図に示
す。第６図は燃焼室内の燃料噴霧の動きを示した
ものである。第５図において、０１は燃料弁ホル
ダ、０２は燃料弁チツプ、０３はシリンダカバ
ー、０４は排気弁、０５は排気弁座、０６はピス
トン、０７はシリンダライナを示す。図中矢印は
燃料噴射方向を示している。通常、このようなサ
イドインジエクシヨン燃焼システムにおいて、シ
リンダカバー０３とピストン０６とから形成され
る燃焼室の周辺部に複数個の燃料弁を有してい
る。図では２個の場合を示す。
FIG. 5 shows the fuel chamber of a conventional side-injection fuel system two-stroke diesel engine. FIG. 6 shows the movement of fuel spray inside the combustion chamber. In FIG. 5, 01 is a fuel valve holder, 02 is a fuel valve chip, 03 is a cylinder cover, 04 is an exhaust valve, 05 is an exhaust valve seat, 06 is a piston, and 07 is a cylinder liner. The arrow in the figure indicates the fuel injection direction. Typically, such a side-injection combustion system includes a plurality of fuel valves around the combustion chamber formed by the cylinder cover 03 and the piston 06. The figure shows the case of two.
第６図において、０２は燃料弁チツプ、０８は
燃料噴霧を示し、矢印ａは燃焼室内の空気の旋回
流（スワール）の旋回方向を示している。燃料弁
のシリンダカバーへの装着状態を拡大して第７図
に示す。第８図は第７図の−矢視図である。
０２は燃料弁チツプ、０２１は燃料弁針弁、０３
はシリンダカバーを示す。０２３は冷却水孔、０
２２は燃料油孔である。 In FIG. 6, 02 indicates a fuel valve chip, 08 indicates fuel spray, and arrow a indicates the direction of swirl of air within the combustion chamber. FIG. 7 shows an enlarged view of how the fuel valve is attached to the cylinder cover. FIG. 8 is a view taken along the - arrow in FIG. 7.
02 is the fuel valve chip, 021 is the fuel valve needle valve, 03
indicates the cylinder cover. 023 is the cooling water hole, 0
22 is a fuel oil hole.
燃料弁チツプ０２から空気スワールに乗つてシ
リンダカバー０３とピストン０６とからなる燃焼
室内へ広く分散するように、ほぼスワール回転方
向へ噴射された燃料は、噴霧０８を形成し燃焼室
内に発達して広がり隣接した燃料弁をも含んだ火
炎を形成し燃焼する。 The fuel is injected from the fuel valve tip 02 in substantially the swirl rotation direction so as to be widely dispersed into the combustion chamber consisting of the cylinder cover 03 and the piston 06 on the air swirl, forming a spray 08 and developing inside the combustion chamber. The flame spreads to include adjacent fuel valves and burns.
上記のものには次の欠点がある。 The above has the following drawbacks.
比較的小さな燃料弁チツプの先端は流速の高い
燃焼室周辺部で高温の燃料ガスにさらされること
になる。先端部は肉厚も薄くなつており、充分に
熱を逃がすことができず、高温腐食等の危険性が
高い。 The tip of the relatively small fuel valve chip is exposed to high temperature fuel gas around the combustion chamber where the flow velocity is high. The wall thickness at the tip is also thin, making it impossible for heat to escape sufficiently, resulting in a high risk of high-temperature corrosion.
〔問題点を解決するための手段〕
本発明の目的は上記の点に着目し、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お
いて、先端部の冷却能力を増大させ高温腐食等の
危険性を防止できる燃料弁チツプの先端形状を提
供することであり、その特徴とするところは、燃
料弁を１個ないし複数個持つサイドインジエクシ
ヨンデイーゼルエンジンにおいて、上記燃料弁の
チツプ先端の外形を非軸対象とし、噴孔を設けた
側の反対側を上記噴孔を設けた側よりも肉厚を厚
くし、かつ肉厚を燃料弁本体に近づくにつれて増
大して形成すると共に、上記噴孔を設けた側の反
対側に冷却水孔を設けたことである。[Means for Solving the Problems] The purpose of the present invention is to address the above points, and to provide a side-injection combustion type diesel engine that can increase the cooling capacity of the tip and prevent risks such as high-temperature corrosion. The purpose of the present invention is to provide a tip shape of a fuel valve chip, and its feature is that in a side-injection diesel engine having one or more fuel valves, the outer shape of the tip of the fuel valve tip is non-axially symmetrical. , the side opposite to the side where the nozzle hole is provided is made thicker than the side where the nozzle hole is provided, and the wall thickness increases as it approaches the fuel valve body, and the side where the nozzle hole is provided; The cooling water hole was provided on the opposite side.
この場合は、チツプ先端の外部形状を燃料噴射
と反対方向に肉厚を厚くし、かつ次第に燃料弁本
体へ近づくにつれて厚みが増大するようにし、燃
料弁先端からの熱が早く冷却水側へ流れるように
した。
In this case, the external shape of the tip of the tip should be thickened in the direction opposite to the fuel injection direction, and the thickness should gradually increase as it approaches the fuel valve body, so that heat from the tip of the fuel valve quickly flows to the cooling water side. I did it like that.
また燃料弁噴孔の背面に冷却水孔を設け、さら
に熱を逃げやすくした。 Additionally, a cooling water hole was installed on the back of the fuel valve nozzle hole to make it easier for heat to escape.
以下図面を参照して本発明による実施例につき
説明する。
Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明による第１実施例のサイドイン
ジエクシヨン燃焼方式の燃料弁チツプを示す。第
２図は第１図の−矢視図である。 FIG. 1 shows a first embodiment of a side-injection combustion type fuel valve chip according to the present invention. FIG. 2 is a view taken along the - arrow in FIG.
図において、９は本発明による燃料弁チツプ
で、燃料弁噴孔９１の反対側に離れるに従つて肉
厚を厚く形成し、かつ燃料弁本体に近づくにつれ
ても厚みが増大するように形成した。２１は燃料
弁針弁、２２は燃料油孔、２３は冷却水孔、３は
シリンダカバーである。 In the figure, reference numeral 9 denotes a fuel valve chip according to the present invention, which is formed so that its wall thickness increases as it moves away from the fuel valve nozzle hole 91 and increases as it approaches the fuel valve body. 21 is a fuel valve needle valve, 22 is a fuel oil hole, 23 is a cooling water hole, and 3 is a cylinder cover.
上述の場合の作用について述べる。 The effect in the above case will be described.
燃料弁チツプは燃料弁噴孔９１と反対側の肉厚
を厚くし、しかも燃料弁本体に近づくにつれて厚
くしているので、熱を伝える通路を確保でき、高
温の燃焼ガスから受ける熱を冷却水孔２３やシリ
ンダカバー３へ逃がしやすい。 The fuel valve chip has a thick wall on the side opposite to the fuel valve nozzle hole 91, and also thickens as it approaches the fuel valve body, so a passage for heat transfer can be secured, and the heat received from high-temperature combustion gas can be transferred to the cooling water. It is easy to escape to the hole 23 and cylinder cover 3.
第３図は本発明による第２実施例のサイドイン
ジエクシヨン燃焼方式の燃料弁チツプを示す。第
４図は第３図の−矢視図である。 FIG. 3 shows a side injection combustion type fuel valve chip according to a second embodiment of the present invention. FIG. 4 is a view taken along the - arrow in FIG.
図において、１０は第１実施例によつて形成さ
れた燃料弁チツプで、同チツプに燃料弁噴孔部の
反対側に冷却水孔１１を設け、同冷却水孔１１は
燃料弁本体の冷却水孔２３に連通している。 In the figure, reference numeral 10 denotes a fuel valve chip formed according to the first embodiment, and a cooling water hole 11 is provided on the opposite side of the fuel valve nozzle hole, and the cooling water hole 11 is used for cooling the fuel valve body. It communicates with the water hole 23.
上述の場合の作用について述べる。 The effect in the above case will be described.
燃料弁噴孔１０１の反対側背面部に設けられた
冷却水孔１１は燃料弁本体の冷却水孔２３に連な
つており、高温の燃焼ガスから受ける熱をすぐ吸
収しやすくする。 The cooling water hole 11 provided on the back side opposite to the fuel valve nozzle hole 101 is connected to the cooling water hole 23 of the fuel valve body, and facilitates the immediate absorption of heat received from high-temperature combustion gas.
本発明の効果について述べる。 The effects of the present invention will be described.
第１実施例の場合、熱を伝える通路を確保で
き、冷却水孔やシリンダカバーへ逃がしやすい。
従つて燃料弁チツプ先端の温度を十分に低減で
き、高温腐食等の障害を防止できる。 In the case of the first embodiment, a passage for transmitting heat can be secured and it is easy to release heat to the cooling water hole or the cylinder cover.
Therefore, the temperature at the tip of the fuel valve chip can be sufficiently reduced, and problems such as high-temperature corrosion can be prevented.
第２実施例の場合は、第１実施例と同様の効果
があると共に、さらに冷却水孔１１により熱をす
ぐ吸収しやすくしたので、燃料弁チツプ先端の温
度を十分に低減でき、高温腐食等の障害を防止で
きる。 In the case of the second embodiment, it has the same effect as the first embodiment, and since the cooling water hole 11 makes it easy to absorb heat immediately, the temperature at the tip of the fuel valve chip can be sufficiently reduced, preventing high-temperature corrosion. failures can be prevented.
第１図は本発明による第１実施例の燃料弁チツ
プを示す断面図、第２図は第１図の−矢視
図、第３図は本発明による第２実施例の燃料弁チ
ツプを示す断面図、第４図は第３図の−矢視
図、第５図は従来のサイドインジエクシヨン燃焼
方式の２サイクルデイーゼルエンジンの燃焼室を
示す断面図、第６図は燃焼室内の燃料噴霧の動き
を示す説明図、第７図は燃料弁のシリンダカバー
への装着状態を示す説明図、第８図は第７図の
−矢視図である。
９……燃料弁チツプ、２２……燃料油孔、２３
……冷却水孔、９１……燃料弁噴孔。
FIG. 1 is a sectional view showing a fuel valve chip according to a first embodiment of the present invention, FIG. 2 is a view taken along the - arrow in FIG. 1, and FIG. 3 is a cross-sectional view showing a fuel valve chip according to a second embodiment according to the present invention. 4 is a cross-sectional view of FIG. 3, FIG. 5 is a sectional view showing the combustion chamber of a conventional side-injection combustion two-stroke diesel engine, and FIG. 6 is a fuel spray inside the combustion chamber. FIG. 7 is an explanatory diagram showing how the fuel valve is attached to the cylinder cover, and FIG. 8 is a view taken along the - arrow in FIG. 7. 9...Fuel valve chip, 22...Fuel oil hole, 23
...Cooling water hole, 91...Fuel valve nozzle hole.
Claims (1)
エクシヨンデイーゼルエンジンにおいて、上記燃
料弁のチツプ先端の外形を非軸対象とし、噴孔を
設けた側の反対側を上記噴孔を設けた側よりも肉
厚を厚くしかつ肉厚を燃料弁本体に近づくにつれ
て増大して形成すると共に、上記噴孔を設けた側
の反対側に冷却水孔を設けたことを特徴とするデ
イーゼルエンジンの燃料弁。1. In a side-injection diesel engine having one or more fuel valves, the outer shape of the tip of the fuel valve is non-axially symmetrical, and the side opposite to the side where the nozzle hole is installed is A fuel valve for a diesel engine, characterized in that the wall thickness is increased as it approaches the fuel valve body, and a cooling water hole is provided on the side opposite to the side where the injection hole is provided. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15142385A JPS6213772A (en) | 1985-07-11 | 1985-07-11 | Fuel valve for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15142385A JPS6213772A (en) | 1985-07-11 | 1985-07-11 | Fuel valve for diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6213772A JPS6213772A (en) | 1987-01-22 |
| JPH0515917B2 true JPH0515917B2 (en) | 1993-03-02 |
Family
ID=15518294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15142385A Granted JPS6213772A (en) | 1985-07-11 | 1985-07-11 | Fuel valve for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6213772A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61108882U (en) * | 1984-12-24 | 1986-07-10 |
-
1985
- 1985-07-11 JP JP15142385A patent/JPS6213772A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6213772A (en) | 1987-01-22 |
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