JPS6021461Y2 - Internal combustion engine blazer - internal bonnet - Google Patents
Internal combustion engine blazer - internal bonnetInfo
- Publication number
- JPS6021461Y2 JPS6021461Y2 JP11284480U JP11284480U JPS6021461Y2 JP S6021461 Y2 JPS6021461 Y2 JP S6021461Y2 JP 11284480 U JP11284480 U JP 11284480U JP 11284480 U JP11284480 U JP 11284480U JP S6021461 Y2 JPS6021461 Y2 JP S6021461Y2
- Authority
- JP
- Japan
- Prior art keywords
- bonnet
- blazer
- internal
- combustion engine
- chamber
- 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
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Description
【考案の詳細な説明】
本考案は、内燃機関のブレイー内装式ボンネットに関す
る。[Detailed Description of the Invention] The present invention relates to a Bray internal bonnet for an internal combustion engine.
この種の従来技術は、ブローバイガスの排出およびオイ
ル洩れ防止を配慮されて設計されている。This type of conventional technology is designed with consideration given to the discharge of blow-by gas and prevention of oil leakage.
たとえば、弁腕室にリード弁をつけたハモニカ式のブレ
ザーを設けたり、弁腕室にボールバルブ式のものを設け
たりしているが、前者の場合、ブレザー装置が大きく弁
腕との干渉をさける為全高が高くなり、かつコスト高と
なる。For example, a harmonica type Blazer with a reed valve attached to the valve arm chamber is installed, or a ball valve type Blazer is installed in the valve arm chamber, but in the former case, the Blazer device is large and interferes with the valve arm. This increases the overall height and costs.
また、後者の場合、始動用の注油口の並設やオイルの吸
気ポートに流入阻止迄配慮されたものではなかった。Furthermore, in the latter case, no consideration was given to arranging oil inlets for starting in parallel or preventing oil from flowing into the intake port.
そこで本考案は以上の事情のもとに考案されたもので、
これを添付図面に示す実施例につき説明すれば、第１図
は小形立形デイゼル機関のボンネットを外した平面図、
第２図は第１図Ａ〜Ａ断面図を示すが、１のシリンダヘ
ッドと、該ヘッド１上に弁腕室２を形成すべくボンネッ
ト３をボルト３′にて冠着する。Therefore, this invention was devised based on the above circumstances.
To explain this with reference to the embodiment shown in the attached drawings, Fig. 1 is a plan view of a small vertical diesel engine with the bonnet removed;
FIG. 2 shows a sectional view taken from A to A in FIG. 1, and a bonnet 3 is attached to a cylinder head 1 using bolts 3' to form a valve arm chamber 2 on the head 1.
該弁腕室２には吸気弁４と排気弁５とをそれぞれロッカ
ーアーム６．７にて弁バネ８に抗して押圧するが、その
作動は機関カム（図示せず）の回動によってブツシュロ
ッド９の上下運動により行なう。In the valve arm chamber 2, an intake valve 4 and an exhaust valve 5 are each pressed against a valve spring 8 by a rocker arm 6.7, and the operation is performed by a bushing rod by rotation of an engine cam (not shown). This is done by vertical movement of 9.
１０は前記両口ツカ−アーム６．７をロッカーアーム軸
１１を介して取付けるロッカーアームブラケットを示す
。Reference numeral 10 indicates a rocker arm bracket to which the double-ended hook arm 6.7 is attached via a rocker arm shaft 11.
以上は通常のオーバーヘッドバルブ式の弁腕室２の構造
であるが、本考案はこの構造に対し、シリンダヘッド１
の吸気ポート１２上に縦穴１３を穿設し、該縦穴１３に
連通ずるようにボンネット３の側壁の厚肉部２３に始動
油通路１４を設け、該通路１４上の潤滑油を保有する油
ダメ１５上にゴム製の始動用プランジャ１６を差し込ん
でいる。The above is the structure of the valve arm chamber 2 of a normal overhead valve type, but the present invention differs from this structure in that the cylinder head 1
A vertical hole 13 is bored above the intake port 12 of the bonnet 3, and a starting oil passage 14 is provided in the thick wall part 23 of the side wall of the bonnet 3 so as to communicate with the vertical hole 13. A starting plunger 16 made of rubber is inserted onto 15.
そして、前記厚肉部２３に前記油ダメ１５に並設してブ
レザー室１７を設け、該ブレザー室１７内にプラスチッ
ク酸の軽いボールバルブ１８を上下動自在に内装し、該
ブレザー室１７の開口部にストッパー１９を冠着してい
る。A blazer chamber 17 is provided in the thick part 23 in parallel with the oil sump 15, and a ball valve 18 made of light plastic acid is installed inside the blazer chamber 17 so as to be movable up and down, and the blazer chamber 17 is opened. A stopper 19 is attached to the part.
また、ブレザー室１７は前記始動油通路１４に急角度上
向きの分岐路２０で連通している。Further, the blazer chamber 17 communicates with the starting oil passage 14 through a steeply upward branching passage 20.
また、ボールバルブ１８の開口部の周辺には隔壁２１を
吊下し、ボンネット３内のオイルの飛沫流入を防いでい
る。Further, a partition wall 21 is suspended around the opening of the ball valve 18 to prevent oil droplets from flowing into the bonnet 3.
なお、２２は燃料噴射弁取付部を示す。Note that 22 indicates a fuel injection valve mounting portion.
したがって、機関の低温始動時には、油ダメ１５に保有
する潤滑油をゴム製の始動用プランジャ１６をつまむこ
とによって吸気ポート１２に混入させ機関始動を促進す
る。Therefore, when starting the engine at a low temperature, lubricating oil held in the oil sump 15 is mixed into the intake port 12 by pinching the rubber starting plunger 16 to promote engine starting.
なお、この潤滑油はブレザー室１７には殆んど行かない
ようになっている。It should be noted that this lubricating oil hardly ever goes to the blazer chamber 17.
一方、機関始動後、ボンネット３内のプローバイガスは
ボールバルブ１８を押し上げて分岐路２０を通って吸気
ポート１２内に還元され、ブローバイガスと勿論オイル
洩れの防止をしている。On the other hand, after the engine is started, the blow-by gas in the bonnet 3 pushes up the ball valve 18 and returns to the intake port 12 through the branch passage 20, thereby preventing blow-by gas and, of course, oil leakage.
以上要するに本考案は実用新案登録請求の範囲に記載さ
れた構成を採択したので、次のような効果を発揮する。In summary, since the present invention adopts the structure described in the claims for utility model registration, it exhibits the following effects.
すなわち、本考案によれば、ボンネットの側壁に設けた
、逆止弁を内装するブレザーであるからボンネットの全
高を低くすることができるばかりではなく、その構造を
、逆止弁を構成する部材の一部を該側壁自体で代用する
ことと相俟って、簡素化でき、しかも、ボンネット側壁
に穿設した始動油通路の一部をブローバイ還元通路と兼
用しているので、特別な配管が必要でなく、とかく複雑
化する機関シリンダヘッド面を簡素化し、全体を小形化
することができ、加えて、機関停止後、ボンネット内が
負圧になって、機関環境の粉塵を吸収しようとしても、
始動油通路（ここは、本来、外気濾過作用をもたしてい
る）に、そのブローバイ還元通路を開口しているので、
かかる粉塵吸収を防止することができ、特別なブリーザ
空気濾過作用をもたせる必要がない。In other words, according to the present invention, since the blazer is equipped with a check valve installed on the side wall of the bonnet, not only can the overall height of the bonnet be lowered, but the structure can also be improved by incorporating the components that make up the check valve. By substituting part of the starting oil passage with the side wall itself, it can be simplified, and because a part of the starting oil passage drilled in the bonnet side wall is also used as the blow-by reduction passage, special piping is not required. In addition, the engine cylinder head surface, which is often complicated, can be simplified and the overall size can be made smaller.In addition, even if the inside of the bonnet becomes negative pressure after the engine stops and attempts to absorb dust from the engine environment,
Since the blow-by reduction passage is opened in the starting oil passage (which originally has an outside air filtering effect),
Such dust absorption can be prevented, and there is no need to provide a special breather air filtration function.
添付図面は本考案の実施例で、第１図はボンネットを外
した平面図、第２図は第１図のＡ−Ａ断面図を示す。
２・・・・・・弁腕室、３・・・・・・ボンネット、１
４・・・・・・始動油通路、１７・・・・・・ブレザー
室、１８・・・・・・ボールバルブ。The accompanying drawings show an embodiment of the present invention, in which FIG. 1 is a plan view with the bonnet removed, and FIG. 2 is a sectional view taken along line A-A in FIG. 1. 2...Valve arm chamber, 3...Bonnet, 1
4... Starting oil passage, 17... Blazer chamber, 18... Ball valve.
Claims (1)
弁を内蔵するブレザー室を設けるとともに、始動時注油
する始動油通路を設け、該始動油通路と前記ブレザー室
とを上向分岐路を介して連通した内燃機関のブレイー内
装式ボンネット。A blazer chamber with a built-in check valve is provided on the side wall of the bonnet that forms the valve arm chamber of the internal combustion engine, and a starting oil passage for lubricating at the time of starting is provided, and the starting oil passage and the blazer chamber are connected to an upward branching path. Bray internal bonnet of an internal combustion engine communicated through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11284480U JPS6021461Y2 (en) | 1980-08-09 | 1980-08-09 | Internal combustion engine blazer - internal bonnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11284480U JPS6021461Y2 (en) | 1980-08-09 | 1980-08-09 | Internal combustion engine blazer - internal bonnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5735407U JPS5735407U (en) | 1982-02-24 |
| JPS6021461Y2 true JPS6021461Y2 (en) | 1985-06-26 |
Family
ID=29473884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11284480U Expired JPS6021461Y2 (en) | 1980-08-09 | 1980-08-09 | Internal combustion engine blazer - internal bonnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6021461Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63100311U (en) * | 1986-12-22 | 1988-06-29 |
-
1980
- 1980-08-09 JP JP11284480U patent/JPS6021461Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5735407U (en) | 1982-02-24 |
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