JPH0736090Y2 - Cylinder head of diesel engine - Google Patents
Cylinder head of diesel engineInfo
- Publication number
- JPH0736090Y2 JPH0736090Y2 JP8903688U JP8903688U JPH0736090Y2 JP H0736090 Y2 JPH0736090 Y2 JP H0736090Y2 JP 8903688 U JP8903688 U JP 8903688U JP 8903688 U JP8903688 U JP 8903688U JP H0736090 Y2 JPH0736090 Y2 JP H0736090Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- valve
- fuel
- cylinder head
- center
- 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
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は４サイクルディーゼル機関のシリンダヘッドに
関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a cylinder head of a four-cycle diesel engine.
第４〜７図は従来形の給排気弁05,06をそれぞれ２個そ
なえ、２個の燃料弁02により側方より噴射する４サイク
ルディーゼル機関に関するものである。第４図はクラン
ク軸を含む垂直面による縦断面図で、01はシリンダヘッ
ド、02は燃料弁、03はピストン、04はシリンダライナ、
09はピストン燃焼室である。FIGS. 4 to 7 relate to a four-cycle diesel engine in which two conventional type supply / exhaust valves 05 and 06 are provided and two fuel valves 02 are used to perform side injection. FIG. 4 is a vertical cross-sectional view of a vertical plane including the crankshaft, 01 is a cylinder head, 02 is a fuel valve, 03 is a piston, 04 is a cylinder liner,
09 is a piston combustion chamber.
第５図は機関の平面図で燃料弁および給排気弁の位置関
係を示している。05は給気弁、06は排気弁、07は給気ポ
ート、08は排気ポート、Ｘ−Ｘはクランク軸の方向を示
す。第６図は多シリンダ機関にとう載したときのシリン
ダヘッド01の隣接関係を示す平面図である。第７図は従
来形シリンダヘッド01に保持された燃料弁02からの噴霧
火炎の拡がり状態を示す平面図で、09はピストン燃焼
室、010は噴霧火炎、SWは空気スワールを示す。これら
の燃料弁02にはそれぞれ３個の噴口を有する場合を示し
ている。FIG. 5 is a plan view of the engine showing the positional relationship between the fuel valve and the supply / exhaust valve. Reference numeral 05 is an air supply valve, 06 is an exhaust valve, 07 is an air supply port, 08 is an exhaust port, and XX is the direction of the crankshaft. FIG. 6 is a plan view showing the adjacency relationship of the cylinder heads 01 when mounted on a multi-cylinder engine. FIG. 7 is a plan view showing the spread state of the spray flame from the fuel valve 02 held by the conventional cylinder head 01, where 09 is the piston combustion chamber, 010 is the spray flame, and SW is the air swirl. Each of these fuel valves 02 has three injection holes.
従来の４弁式のシリンダヘッドでは給気弁05および排気
弁06のロッカ比をほぼ等しくするため、給排気弁がシリ
ンダ中心に対しクランク軸方向とクランク軸垂直方向の
中間方向即ちクランク軸とほぼ45°方向に対称に配置さ
れている。In the conventional four-valve type cylinder head, since the rocker ratios of the air supply valve 05 and the exhaust valve 06 are made substantially equal, the air supply / exhaust valve is almost in the intermediate direction between the crankshaft direction and the crankshaft vertical direction with respect to the cylinder center, that is, the crankshaft. They are arranged symmetrically in the 45 ° direction.
又燃料弁はピストン燃焼室外周部に対応する位置で給気
弁と排気弁の間には給気ポートおよび排気ポートとの干
渉により配置できないので、給気弁と給気弁の間および
排気弁と排気弁の間即ちシリンダ中心に対しクランク軸
方向に配設されている。Further, the fuel valve cannot be arranged between the intake valve and the exhaust valve at a position corresponding to the outer periphery of the piston combustion chamber due to interference with the intake port and the exhaust port. And the exhaust valve, that is, in the crankshaft direction with respect to the center of the cylinder.
このようなシリンダヘッドを多シリンダ機関にとう載す
る場合には、第６図のようにシリンダヘッド側面に突出
した燃料弁を保持する部分が一直線上に並ぶため、シリ
ンダ間隔が長くなり機関を小形化する妨げとなってい
た。When such a cylinder head is mounted on a multi-cylinder engine, as shown in FIG. 6, the portions for holding the fuel valves protruding to the side surface of the cylinder head are aligned in a straight line, so that the cylinder interval becomes longer and the engine is made smaller. It was a hindrance to change.
このように従来形シリンダヘッドでは燃料弁がピストン
燃焼室の外周で給気弁と給気弁の間および排気弁と排気
弁の間に位置するため、給排気ポートを狭めることなく
燃料弁を燃焼室の中央に近づけることは不可能であっ
た。従って燃料弁からの噴霧拡がり可能範囲即ち燃焼室
中央から燃料弁下流側の燃焼室側壁までの間を燃料弁か
ら見た角度が小さくなり、相隣る噴霧火炎の干渉が第７
図のように避けられず、燃焼効率が低下して燃焼率の悪
化を招く結果となっていた。In this way, in the conventional cylinder head, the fuel valve is located on the outer periphery of the piston combustion chamber between the intake valve and the exhaust valve and between the exhaust valve and the exhaust valve, so the fuel valve burns without narrowing the intake / exhaust port. It was impossible to get close to the center of the chamber. Therefore, the spray spread range from the fuel valve, that is, the angle from the center of the combustion chamber to the side wall of the combustion chamber on the downstream side of the fuel valve when viewed from the fuel valve becomes small, and the interference of adjacent spray flames is
As shown in the figure, it is unavoidable that the combustion efficiency is lowered and the combustion rate is deteriorated.
本考案の目的は前記従来装置の欠点を解消し、シリンダ
間隔の短縮が可能なシリンダヘッドを提供するにある。An object of the present invention is to eliminate the drawbacks of the conventional device and to provide a cylinder head capable of shortening the cylinder interval.
本考案に係るディーゼル機関のシリンダヘッドは給気弁
及び排気弁を１シリンダに対しそれぞれ２個ずつ有し、
ピストンに凹設された燃焼室の側方より燃料を噴射する
燃料弁を、シリンダ中心に対しほぼ対称位置に１個ずつ
有するものにおいて、前記各燃料弁はクランク軸方向Ｘ
−Ｘとシリンダ中心Ｏをとおり同クランク軸に直角方向
Ｙ−Ｙとの中間方向であり、かつ給気弁と排気弁の間の
直線ZOZ上にそれぞれ位置することを特徴としている。The cylinder head of the diesel engine according to the present invention has two intake valves and two exhaust valves for each cylinder.
In the case where one fuel valve for injecting fuel from the side of the combustion chamber recessed in the piston is provided at substantially symmetrical positions with respect to the center of the cylinder, each of the fuel valves has a crankshaft direction X.
It is characterized in that it is located in the middle direction between the direction -X and the center O of the cylinder and the direction Y-Y perpendicular to the same crankshaft and on the straight line ZOZ between the air supply valve and the exhaust valve.
前記構成によれば、シリンダ間隔を小さくし機関の小形
化が可能となる。According to the above configuration, the cylinder interval can be reduced and the engine can be downsized.
以下第１〜第３図を参照し本考案の一実施例について説
明する。An embodiment of the present invention will be described below with reference to FIGS.
第１図はシリンダヘッド１の平面図で燃料弁と給排気弁
の位置関係説明図、第２図は多シリンダ機関とした場合
のシリンダヘッドの隣接関係説明図、第３図は本シリン
ダヘッドの燃料弁からの噴霧火炎の分布状態図である。FIG. 1 is a plan view of the cylinder head 1, which is an explanatory view of the positional relationship between the fuel valve and the supply / exhaust valve, FIG. 2 is an explanatory view of the adjacency relationship of the cylinder heads in the case of a multi-cylinder engine, and FIG. It is a distribution state diagram of the spray flame from a fuel valve.
図において２個の燃料弁２はそれぞれシリンダ中心に対
しクランク軸方向Ｘ−Ｘとシリンダ中心Ｏをとおりクラ
ンク軸に直角方向Ｙ−Ｙとの中間方向でＯをとおりＸ−
Ｘ方向から角度35°をなし、給気弁５と排気弁６の間で
且従来よりもピストン燃焼室中央寄りの位置に配設され
ている。In the drawing, the two fuel valves 2 are respectively X- and O- in the middle direction between the crank axis direction X-X and the cylinder center O with respect to the cylinder center and the direction Y-Y perpendicular to the crank shaft.
The angle is 35 ° from the X direction, and it is arranged between the intake valve 5 and the exhaust valve 6 and closer to the center of the piston combustion chamber than in the conventional case.
上記実施例の作用について説明する。The operation of the above embodiment will be described.
本考案では燃料弁２と給排気弁5,6を前記のように配置
したので空気スワールができ易く、又多シリンダ機関と
した場合、相隣るシリンダヘッド１間において側方に突
出する燃料弁２を保持する部分と、シリンダ中心Ｏとを
結ぶ２本の直線OZがＸ−Ｘに対し互いに反対側に位置す
るため、第２図に示すように従来例の第６図に比べシリ
ンダ間隔▲▼を縮めても互に干渉することはない。In the present invention, since the fuel valve 2 and the supply / exhaust valves 5 and 6 are arranged as described above, an air swirl is likely to occur, and in the case of a multi-cylinder engine, a fuel valve that projects laterally between adjacent cylinder heads 1 Since two straight lines OZ connecting the portion holding 2 and the cylinder center O are located on the opposite sides with respect to XX, as shown in FIG. 2, the cylinder spacing is smaller than that of the conventional example shown in FIG. Even if ▼ is shortened, they do not interfere with each other.
また本考案ではシリンダヘッド１に保持される燃料弁２
の位置がそれぞれ従来よりもピストン燃焼室９のセンタ
Ｏ寄りとしたため、燃料弁下流側の燃焼室側壁を燃料弁
２から見た角度が大きくなり、相隣る噴霧火炎が第３図
のように干渉することはない。Further, in the present invention, the fuel valve 2 held by the cylinder head 1
Since the respective positions are closer to the center O of the piston combustion chamber 9 than in the conventional case, the angle when the side wall of the combustion chamber on the downstream side of the fuel valve is viewed from the fuel valve 2 is increased, and the adjacent spray flame is as shown in FIG. There is no interference.
なお第１図のように給排気弁5,6及び燃料弁２を配置し
た場合においても、従来公知の舶用４サイクルディーゼ
ル機関のロッカー機構を多少モデフイイヤしロッカレバ
ー比を調整するだけで十分対応することができることは
明らかである。Even when the intake / exhaust valves 5 and 6 and the fuel valve 2 are arranged as shown in FIG. 1, it is sufficient to modify the rocker mechanism of a conventionally known four-cycle diesel engine for a ship to some extent and adjust the rocker lever ratio. It is clear that
本考案に係るディーゼル機関のシリンダヘッドを使用す
ることにより、シリンダ間隔の短縮が可能となり、小形
軽量のディーゼル機関が実現できる。By using the cylinder head of the diesel engine according to the present invention, the cylinder interval can be shortened and a small and lightweight diesel engine can be realized.
第１〜３図は本考案に係るもので、第１図はシリンダヘ
ッドの燃料弁と給排気弁の位置関係を示す平面図、第２
図は多シリンダ機関にとう載した場合のシリンダヘッド
の隣接関係を示す説明図、第３図はシリンダヘッドの燃
料弁からの噴霧火炎の状態を示す図であり、第４〜７図
は従来例で第４図は従来形のディーゼル機関の要部を示
すクランク軸方向の断面図、第５図は第１図応当図、第
６図は第２図応当図、第７図は第３図応当図である。 １……シリンダヘッド、２……燃料弁、５……給気弁、
６……排気弁、７……給気ポート、８……排気ポート、
Ｏ……シリンダ軸心、Ｘ−Ｘ……クランク軸方向、Ｙ−
Ｙ……Ｏをとおりクランク軸に直角方向、Ｚ−Ｚ……Ｏ
をとおり中間方向。1 to 3 relate to the present invention, and FIG. 1 is a plan view showing a positional relationship between a fuel valve and an intake / exhaust valve of a cylinder head.
FIG. 3 is an explanatory view showing the adjacency relationship of cylinder heads when mounted on a multi-cylinder engine, FIG. 3 is a view showing a state of spray flame from a fuel valve of the cylinder head, and FIGS. 4 to 7 are conventional examples. FIG. 4 is a cross-sectional view in the crankshaft direction showing a main part of a conventional diesel engine, FIG. 5 is a drawing of FIG. 1, FIG. 6 is a drawing of FIG. 2, and FIG. 7 is a drawing of FIG. It is a figure. 1 ... Cylinder head, 2 ... Fuel valve, 5 ... Air supply valve,
6 ... Exhaust valve, 7 ... Air supply port, 8 ... Exhaust port,
O: Cylinder axis center, XX: Crank axis direction, Y-
Y ... O, perpendicular to the crankshaft, ZZ ... O
Follow the middle direction.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−210217（ＪＰ，Ａ) 特開 昭63−189614（ＪＰ，Ａ) 特開 昭59−206613（ＪＰ，Ａ) 特開 昭57−8315（ＪＰ，Ａ) 実開 昭51−112905（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 62-210217 (JP, A) JP 63-189614 (JP, A) JP 59-206613 (JP, A) JP 57- 8315 (JP, A) Actually open 51-112905 (JP, U)
Claims (1)
ぞれ２個ずつ有し、ピストンに設けられた燃焼室の側方
より燃料を噴射する燃料弁をシリンダ中心Ｏに対しほぼ
対称位置に１個ずつ有するものにおいて、前記各燃料弁
はクランク軸方向Ｘ−Ｘとシリンダ中心Ｏをとおり同ク
ランク軸に直角方向Ｙ−Ｙとの中間方向であり、かつ給
気弁と排気弁の間の直線ZOZ上にそれぞれ配設されたこ
とを特徴とするディーゼル機関のシリンダヘッド。1. A fuel valve for injecting fuel from a side of a combustion chamber provided in a piston is provided at a substantially symmetrical position with respect to a center O of the cylinder. In the case of having one each, each of the fuel valves is an intermediate direction between the crankshaft direction XX and the direction YY perpendicular to the crankshaft passing through the cylinder center O and between the intake valve and the exhaust valve. Cylinder heads for diesel engines, each of which is arranged on a straight line ZOZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8903688U JPH0736090Y2 (en) | 1988-07-06 | 1988-07-06 | Cylinder head of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8903688U JPH0736090Y2 (en) | 1988-07-06 | 1988-07-06 | Cylinder head of diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0212026U JPH0212026U (en) | 1990-01-25 |
| JPH0736090Y2 true JPH0736090Y2 (en) | 1995-08-16 |
Family
ID=31313591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8903688U Expired - Lifetime JPH0736090Y2 (en) | 1988-07-06 | 1988-07-06 | Cylinder head of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0736090Y2 (en) |
-
1988
- 1988-07-06 JP JP8903688U patent/JPH0736090Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0212026U (en) | 1990-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7418940B1 (en) | Fuel injector spray pattern for direct injection spark ignition engines | |
| US5950582A (en) | Internal combustion engine with variable camshaft timing and intake valve masking | |
| CA1067771A (en) | Exhaust gas recirculation system of a multi-cylinder internal combustion engine | |
| US4438743A (en) | Internal combustion engine | |
| US5529038A (en) | Direct injected engine | |
| JPS62135612A (en) | Internal combustion engine | |
| US20010003281A1 (en) | Combustion chamber for direct injection engine | |
| CA1075988A (en) | Internal combustion engine having two spark plugs for each combustion chamber and exhaust gas recirculation circuit | |
| JPH0736090Y2 (en) | Cylinder head of diesel engine | |
| US6708667B2 (en) | Combustion chamber structure of in-cylinder fuel injection type engine | |
| JPS58568B2 (en) | Engine with auxiliary combustion chamber | |
| US6076498A (en) | Direct-injection spark-ignition four-stroke internal-combustion engine | |
| US9410521B2 (en) | Fuel injector spray pattern | |
| JP2961779B2 (en) | Fuel supply device for stratified combustion internal combustion engine | |
| GB1474138A (en) | Internal combustion engine with main and auxiliary combustion chambers | |
| GB2365071A (en) | Direct petrol injection IC engine with five valves and a spark plug and fuel injector arranged centrally to the combustion chamber, between the valves | |
| JPH0217687B2 (en) | ||
| JP3094215B2 (en) | Engine intake system | |
| JPH0413415Y2 (en) | ||
| GB2087479A (en) | Ic engine mixture intake system | |
| JP3738478B2 (en) | Direct-injection spark ignition internal combustion engine | |
| JP2524290Y2 (en) | Engine combustion chamber structure | |
| JPS60111021A (en) | Three-valve type internal-combustion engine with fuel injection device | |
| JP2518627Y2 (en) | Engine with multiple intake valves | |
| JPS588896Y2 (en) | engine intake system |