JPS6018587Y2 - Cooling water seal structure of water-cooled pre-combustion chamber - Google Patents
Cooling water seal structure of water-cooled pre-combustion chamberInfo
- Publication number
- JPS6018587Y2 JPS6018587Y2 JP3287179U JP3287179U JPS6018587Y2 JP S6018587 Y2 JPS6018587 Y2 JP S6018587Y2 JP 3287179 U JP3287179 U JP 3287179U JP 3287179 U JP3287179 U JP 3287179U JP S6018587 Y2 JPS6018587 Y2 JP S6018587Y2
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- cooling water
- combustion chamber
- water
- cooled
- 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
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
本考案は、内燃機関の予燃焼室に関し、特に水冷式予燃
焼室の冷却水シール構造に関する。[Detailed Description of the Invention] The present invention relates to a pre-combustion chamber of an internal combustion engine, and more particularly to a cooling water seal structure for a water-cooled pre-combustion chamber.
内燃機関の予燃焼室と主燃焼室とを連通ずる噴孔部は機
関の運転中は極めて高温にさらされる部分であるから、
従来からこの部分については材質上特に配慮を重ねては
いるが、往々にして噴孔部エツジが溶損し、極端な機関
性能の劣化をもたらすことがある。The nozzle hole that communicates the pre-combustion chamber with the main combustion chamber of an internal combustion engine is exposed to extremely high temperatures during engine operation.
Conventionally, special consideration has been given to the material of this part, but the edges of the nozzle hole often suffer melt damage, resulting in extreme deterioration of engine performance.
本出願人は、この欠点を解消するために、予燃焼室の噴
孔部周辺に冷却水を導入して予燃焼室そのものを直接冷
却するようにした水冷式予燃焼室を考案したが、本考案
はこのような水冷式予燃焼室の冷却水通路のシール構造
に関するものである、即ち、本考案の水冷式予燃焼室の
冷却水シール構造は、内燃機関の主燃焼室4に連通する
噴孔5を前壁にもつ前室1と、これに連設される後室3
とから威り、前室1には噴孔5を取り囲んで冷却水通路
8が穿設された水冷式予燃焼室において、該冷却水通路
8の流入口9と吐出口16とを前室1の外周壁面15に
垂直に穿設し、該流入口9および吐出口16の開口の周
辺に、シール材を嵌入するための環状の溝17.18を
、これら開口と間隔をおいて同心円状に夫々穿設し、こ
の溝17.18に環状のシール材14を嵌入して予燃焼
室をシリンダヘッド6に取付けるようにした点を特長と
するものである。In order to solve this drawback, the applicant devised a water-cooled precombustion chamber in which cooling water is introduced around the nozzle hole of the precombustion chamber to directly cool the precombustion chamber itself. The invention relates to a sealing structure for the cooling water passage of such a water-cooled precombustion chamber. In other words, the cooling water sealing structure for the water-cooled precombustion chamber of the invention relates to a sealing structure for the cooling water passage of the water-cooled precombustion chamber. A front chamber 1 having a hole 5 in the front wall, and a rear chamber 3 connected to the front chamber 1.
Therefore, in a water-cooled precombustion chamber in which a cooling water passage 8 is bored in the front chamber 1 surrounding the nozzle hole 5, the inlet 9 and the discharge opening 16 of the cooling water passage 8 are connected to the front chamber 1. Annular grooves 17 and 18 are perpendicularly perpendicular to the outer circumferential wall surface 15 of the inlet 9 and the outlet 16, and annular grooves 17 and 18 for fitting the sealing material are formed concentrically around the openings of the inlet 9 and the outlet 16, spaced apart from these openings. This is characterized in that the pre-combustion chamber is attached to the cylinder head 6 by inserting an annular sealing material 14 into the grooves 17 and 18, respectively.
次に、図により本考案の実施例を説明する。Next, embodiments of the present invention will be described with reference to figures.
第1図において、1は予燃焼室2を構成する前室で、前
室1には後室3が連設されている。In FIG. 1, reference numeral 1 denotes a front chamber constituting a pre-combustion chamber 2, and a rear chamber 3 is connected to the front chamber 1.
前室1の前部壁には、予燃焼室5と主燃焼室4とを連通
ずる噴孔5が穿設されている。A nozzle hole 5 is bored in the front wall of the front chamber 1 to communicate the pre-combustion chamber 5 and the main combustion chamber 4 .
予燃焼室2はシリンダヘッド6に支持されており主燃焼
室4はピストン7の頂部とシリンダヘッド6との間に形
成される。The pre-combustion chamber 2 is supported by the cylinder head 6, and the main combustion chamber 4 is formed between the top of the piston 7 and the cylinder head 6.
前室1には、噴孔5を取囲んで冷却水通路8が穿設され
ており、その冷却水の流入口9はシリンダヘッドの冷却
水通路10の流通方向(上流側)にむかって開口する。A cooling water passage 8 is bored in the front chamber 1 surrounding the nozzle hole 5, and the cooling water inlet 9 thereof is opened toward the flow direction (upstream side) of the cooling water passage 10 of the cylinder head. do.
なお第1図中11はシリンダヘッド、12はシリンダブ
ロック、13は冷却水メーンギャラリ、矢印は冷却水の
流れ方向をそれぞれ示し、14はシール材(詳しくは後
述)である。In FIG. 1, 11 is a cylinder head, 12 is a cylinder block, 13 is a cooling water main gallery, arrows indicate the flow direction of cooling water, and 14 is a sealing material (described in detail later).
予燃焼室前室1に形成する冷却水通路8は、中子にセラ
ミックを用いた精密鋳造により、或は主体と外壁面とを
別個に予め製作し、これらを間に冷却水通路が形成され
るように、溶接結合によって予燃焼室を形成することに
より、製造するものである。The cooling water passage 8 formed in the pre-combustion chamber front chamber 1 is formed by precision casting using a ceramic core, or by separately manufacturing the main body and the outer wall surface, and forming the cooling water passage between them. It is manufactured by forming a pre-combustion chamber by welding and joining.
第2〜4図において、前室1に形成した冷却水通路8に
は前室1の外周壁面15に直交して冷却水の流入口9と
吐出口16とが穿設される。2 to 4, a cooling water passage 8 formed in the front chamber 1 is provided with a cooling water inlet 9 and an outlet 16 perpendicular to the outer peripheral wall surface 15 of the front chamber 1. As shown in FIGS.
前室1の外周壁面15は、従来のもの同様に、垂直状か
あるいはや)先細のテーパ状の形状をもつものである。The outer circumferential wall surface 15 of the front chamber 1 has a vertical or slightly tapered shape, similar to the conventional one.
外周壁面15上の流入口9および吐出口16の開口の周
囲には、シール材を嵌入するための環状の溝17.18
が、これら開口と間隔をおいて同心円状に夫々穿設され
る。Around the openings of the inlet 9 and the outlet 16 on the outer peripheral wall surface 15, annular grooves 17 and 18 are provided for fitting a sealing material.
are concentrically drilled at intervals from these openings.
そして、この溝17.18には、後述のシール材即ちパ
ツキン14が嵌入する。A sealing material or packing 14, which will be described later, is fitted into these grooves 17 and 18.
パツキンとしては、例えば渦巻きパツキンと呼ばれてい
る、第5図に示したような、弾性耐熱金属板19にバッ
クアップされたカーボン材20から成るものが適当であ
り、あるいは板バネに厚いテフロン(登録商標)材をコ
ーティングしたものが適当である。As for the packing, it is suitable to use, for example, a spiral packing made of carbon material 20 backed up by an elastic heat-resistant metal plate 19, as shown in FIG. Trademark) material coated is suitable.
本考案の水冷式予燃焼室の冷却水シール構造は、上記の
ように構成され、流入口9および吐出口16の開口の周
囲に、これら開口と間隔をおいて同心円状に溝17.1
8を夫々穿設し、この溝17.18に環状のシール材1
4の嵌入するようにしたので、シール材14を溝17,
18により確実に支持することができる。The cooling water seal structure of the water-cooled pre-combustion chamber of the present invention is constructed as described above, with grooves 17.
8 are bored respectively, and an annular sealing material 1 is inserted into these grooves 17 and 18.
4, the sealing material 14 is inserted into the groove 17,
18, it can be supported reliably.
従って、予燃焼室をシリンダヘッド6に嵌合する際に、
各シール材14に歪みや捻れ等の変形を生ずるおそれが
なく、かつシリンダヘッド6に嵌合支持させることによ
り、水冷式予燃焼室をシリンダヘッドに、ウォータプル
ーフ状に保持することができる。Therefore, when fitting the pre-combustion chamber to the cylinder head 6,
There is no risk of deformation such as distortion or twisting in each sealing material 14, and by fitting and supporting the cylinder head 6, the water-cooled precombustion chamber can be held in the cylinder head in a waterproof manner.
このように、本考案の水冷式予燃焼室の冷却水シール構
造は、簡単な構造でありながら完全な耐水構造とするこ
とができるものであり、本考案によれば、予燃焼室の噴
孔部の冷却を効果的に行なうことができるという水冷式
予燃焼室の機能を一層効果的なものとすることができ、
本考案の実用上の効果は極めて顕著である。As described above, the cooling water seal structure of the water-cooled precombustion chamber of the present invention has a simple structure but can be made completely water-resistant. The function of the water-cooled pre-combustion chamber, which can effectively cool the parts, can be made even more effective.
The practical effects of the present invention are extremely remarkable.
第1図は本考案の水冷式予燃焼室の冷却水シール構造を
もつ内燃機関の(部分)側断面図、第2図は水冷式予燃
焼室の側断面図、第3図は第2図のI−I線断面平面図
、第4図は水冷式予燃焼室の側面図、第5図はパツキン
の側断面図である。
1・・・・・・前室、2・・・・・・予燃焼室、3・・
・・・・後室、4・・・・・・主燃焼室、5・・・・・
・噴孔、6・・・・・・シリンダヘッド、7・・・・・
ゼストン、8・・・・・・冷却水通路、9・・・・・・
流入口、10・・・・・・シリンダヘッド内の冷却水通
路、14・・・・・・シール材(パツキン)、15・・
・・・・前室の外周壁面、16・・・・・・吐出口、1
7.18・・・・・・溝。Fig. 1 is a (partial) side sectional view of an internal combustion engine having a cooling water seal structure for the water-cooled precombustion chamber of the present invention, Fig. 2 is a side sectional view of the water-cooled precombustion chamber, and Fig. 3 is Fig. 2. FIG. 4 is a side view of the water-cooled precombustion chamber, and FIG. 5 is a side sectional view of the packing. 1... Front chamber, 2... Pre-combustion chamber, 3...
...Rear chamber, 4...Main combustion chamber, 5...
・Nozzle hole, 6...Cylinder head, 7...
Zeston, 8...Cooling water passage, 9...
Inflow port, 10... Cooling water passage in cylinder head, 14... Seal material (packet), 15...
...Outer peripheral wall surface of front chamber, 16...Discharge port, 1
7.18...groove.
Claims (1)
室1と、これに連設される後室3とから威り、前室1に
は噴孔5を取り囲んで冷却水通路8が穿設された水冷式
予燃焼室において、該冷却水通路8の流入口9と吐出口
16とを前室1の外周壁面15に垂直に穿設し、該流入
口9及び吐出口16の開口部の周囲に、シール材を嵌入
するための環状の溝17.18を、これら開口と間隔を
おいて同心円状に夫々穿設し、この溝17.18に環状
のシール材14を嵌入して予燃焼室をシリンダヘッド6
に取付けるようにした水冷式予燃焼室の冷却水シール構
造。It consists of a front chamber 1 which has nozzle holes 5 in the front wall that communicate with the main combustion chamber 4 of the internal combustion engine, and a rear chamber 3 connected to this, and the front chamber 1 has cooling water surrounding the nozzle holes 5. In a water-cooled precombustion chamber in which a passage 8 is bored, an inlet 9 and an outlet 16 of the cooling water passage 8 are bored perpendicularly to the outer peripheral wall surface 15 of the front chamber 1, and the inlet 9 and outlet 16, annular grooves 17 and 18 for fitting the sealing material are formed concentrically at intervals with these openings, and the annular sealing material 14 is inserted into these grooves 17 and 18. Insert the pre-combustion chamber into the cylinder head 6
A cooling water seal structure for a water-cooled pre-combustion chamber that is installed in a water-cooled pre-combustion chamber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3287179U JPS6018587Y2 (en) | 1979-03-14 | 1979-03-14 | Cooling water seal structure of water-cooled pre-combustion chamber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3287179U JPS6018587Y2 (en) | 1979-03-14 | 1979-03-14 | Cooling water seal structure of water-cooled pre-combustion chamber |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55132319U JPS55132319U (en) | 1980-09-19 |
JPS6018587Y2 true JPS6018587Y2 (en) | 1985-06-05 |
Family
ID=28887223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3287179U Expired JPS6018587Y2 (en) | 1979-03-14 | 1979-03-14 | Cooling water seal structure of water-cooled pre-combustion chamber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6018587Y2 (en) |
-
1979
- 1979-03-14 JP JP3287179U patent/JPS6018587Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS55132319U (en) | 1980-09-19 |
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