JPH0378521A - Cylinder head force feed oil cooling device for vertical or inclined type engine - Google Patents
Cylinder head force feed oil cooling device for vertical or inclined type engineInfo
- Publication number
- JPH0378521A JPH0378521A JP21373389A JP21373389A JPH0378521A JP H0378521 A JPH0378521 A JP H0378521A JP 21373389 A JP21373389 A JP 21373389A JP 21373389 A JP21373389 A JP 21373389A JP H0378521 A JPH0378521 A JP H0378521A
- Authority
- JP
- Japan
- Prior art keywords
- rocker arm
- oil
- jacket
- cooling
- wall
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 83
- 230000002265 prevention Effects 0.000 claims abstract description 18
- 238000005461 lubrication Methods 0.000 claims description 17
- 238000005553 drilling Methods 0.000 abstract 2
- 230000001050 lubricating effect Effects 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 101
- 239000010687 lubricating oil Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
-
- 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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/34—Lateral camshaft position
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F2001/244—Arrangement of valve stems in cylinder heads
- F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野〕
本発明は、縦乃至傾斜形エンジンにおいて、潤滑油兼用
の冷却油をシリンダヘッド内に圧送してこれを冷却する
装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for pumping cooling oil that also serves as lubricating oil into a cylinder head to cool it in a vertical or inclined engine.
［基本構造］
本発明の前提となるシリンダヘッド油冷装置の基本構造
は、次のようになっている。[Basic Structure] The basic structure of the cylinder head oil cooling device, which is the premise of the present invention, is as follows.
例えば第１図、第５図または第６図に示すように、縦乃
至傾斜形エンジン１のシリンダヘッド２内に油冷用ジャ
ケット３を形成し、シリンダヘッド２上にロッカアーム
ブラケット４及びロッカアーム軸５を介してロッカアー
ム６を揺動自在に枢支し、ロッカアーム潤滑路７をロッ
カアームブラケット４内からロッカアーム軸５内を経て
ロッカアーム軸５とロッカアーム６との軸受面間８にま
でわたって形成して構成したものである。For example, as shown in FIG. 1, FIG. 5, or FIG. 6, an oil cooling jacket 3 is formed in a cylinder head 2 of a vertical or inclined engine 1, and a rocker arm bracket 4 and a rocker arm shaft 5 are provided on the cylinder head 2. The rocker arm 6 is swingably supported through the rocker arm bracket 4, and a rocker arm lubrication path 7 is formed extending from the inside of the rocker arm bracket 4 through the inside of the rocker arm shaft 5 to the space 8 between the bearing surfaces of the rocker arm shaft 5 and the rocker arm 6. This is what I did.
［従来の技術］
上記基本構造において、油冷用ジャケットの構造及びロ
ッカアーム潤滑路への給油路の構造としては、従来では
第６図に示すものがある。[Prior Art] In the above basic structure, the structure of the oil cooling jacket and the structure of the oil supply path to the rocker arm lubrication path are conventionally shown in FIG. 6.
これは、ジャケット３の一側の底部９に冷却油入口１０
を、他側の上部１１に冷却油出口１２を開口し、冷却油
入口１０及び冷却油出口１２を相互に臨ませ、さらにオ
イルパンまたはクランクケース内からロッカアーム潤滑
路７への給油路１９を導出させていた。This includes a cooling oil inlet 10 at the bottom 9 on one side of the jacket 3.
A cooling oil outlet 12 is opened in the upper part 11 on the other side, the cooling oil inlet 10 and the cooling oil outlet 12 are made to face each other, and an oil supply path 19 is led out from the oil pan or inside the crankcase to the rocker arm lubrication path 7. I was letting it happen.
［発明が解決しようとする課題］
このため、上記従来技術では、下記の問題■乃至■があ
る。[Problems to be Solved by the Invention] Therefore, the above-mentioned prior art has the following problems (1) to (2).
■エンジンを停止すると、ジャケット３内の冷却油１３
が冷却油入口１０から抜けてしまうので、エンジン再始
動時にはジャケット３内に冷却油１３が無く、冷却不能
によりシリンダヘッド２に割れ、熱歪、ガス漏れが生じ
るおそれがある。■When the engine is stopped, the cooling oil 13 inside the jacket 3
Since the cooling oil 13 escapes from the cooling oil inlet 10, there is no cooling oil 13 in the jacket 3 when the engine is restarted, and there is a risk that the cylinder head 2 will be cracked, thermal distortion, and gas leakage will occur due to the inability to cool the engine.
■ジャケット３内上部の冷却油１３は順次冷却油入口１
０から流入してくる冷却油１３により速やかに冷却油出
口１２から比較的押し出され易いが、ジャケット３内下
部の冷却油１３は比較的滞留し易いので、ジャケット３
の底壁１５が充分に冷却されない。■The cooling oil 13 in the upper part of the jacket 3 is sequentially connected to the cooling oil inlet 1.
Although the cooling oil 13 flowing in from the jacket 3 is relatively easy to be quickly pushed out from the cooling oil outlet 12, the cooling oil 13 in the lower part of the jacket 3 is relatively easy to stay.
The bottom wall 15 of is not cooled sufficiently.
■ロッカアーム潤滑路７への給油路１９をオイルパンま
たはクランクケースから導出させなければならないので
、エンジンの構造が複雑化する。(2) Since the oil supply path 19 to the rocker arm lubrication path 7 must be led out from the oil pan or crankcase, the structure of the engine becomes complicated.
上記問題■を解決するため、冷却油入口１０をジャケッ
ト３の上部１１に開口することが考えられる。In order to solve the above problem (2), it is conceivable to open the cooling oil inlet 10 in the upper part 11 of the jacket 3.
しかし、この場合には冷却油入口１０から流入してくる
冷却油１３の流れがジャケット３内の上部のみに一層偏
るので、上記問題■が一層顕著になる。However, in this case, the flow of the cooling oil 13 flowing in from the cooling oil inlet 10 is more concentrated only in the upper part of the jacket 3, so that the above-mentioned problem (2) becomes even more noticeable.
本発明は、ジャケット内の冷却油の抜けを防止すること
、ジャケットの底壁を強力に冷却できるようにすること
、ロッカアーム潤滑路への給油路の構造を簡易化するこ
と、をその課題とする。The objects of the present invention are to prevent cooling oil from leaking inside the jacket, to strongly cool the bottom wall of the jacket, and to simplify the structure of the oil supply path to the rocker arm lubrication path. .
［課題を解決するための手段］
本発明は、前記基本構造において、油冷用ジャケットの
構造及びロッカアーム潤滑路への給油路の構造を次のよ
うにすることを特徴とする。[Means for Solving the Problems] The present invention is characterized in that, in the basic structure described above, the structure of the oil cooling jacket and the structure of the oil supply path to the rocker arm lubrication path are as follows.
例えば第１図または第５図に示すように、ジャケット３
の一側の底部９に冷却油入口１０を、他側の上部１１に
冷却油出口１２を開口し、ジャケット３内の冷却油１３
が冷却油入口１０から漏れ出すことを防止する漏油防止
壁１４を、冷却油入口１０の近くでジャケット３の底壁
１５から上向きに立ち上がらせて形成し、ジャケット３
内で漏油防止壁１４を越えた冷却油１３を下向きに案内
する下向き案内壁１６を漏油防止壁１４の近くでジャケ
ット３の上壁１７から下向きに垂れ下がらせて形成し、
ジャケット３の上壁１７にロッカアーム用給油孔１８を
あけ、ロッカアーム用給油孔１８にロッカアーム潤滑路
７を連通させたものである。For example, as shown in FIG. 1 or FIG.
A cooling oil inlet 10 is opened at the bottom 9 on one side, and a cooling oil outlet 12 is opened at the upper part 11 on the other side.
An oil leakage prevention wall 14 for preventing oil leakage from the cooling oil inlet 10 is formed by rising upward from the bottom wall 15 of the jacket 3 near the cooling oil inlet 10.
A downward guide wall 16 for guiding the cooling oil 13 that has passed over the oil leak prevention wall 14 downwardly is formed by hanging downward from the upper wall 17 of the jacket 3 near the oil leak prevention wall 14,
A rocker arm oil supply hole 18 is formed in the upper wall 17 of the jacket 3, and a rocker arm lubrication path 7 is communicated with the rocker arm oil supply hole 18.
［作用］ 本発明は、次のように作用する。[Effect] The invention works as follows.
■エンジンを停止しても、ジャケット３内の冷却油１３
は漏油防止壁１４で堰止められ、冷却油出口１２から漏
れ出ることがない。■Even if the engine is stopped, the cooling oil 13 inside the jacket 3
The cooling oil is dammed by the oil leakage prevention wall 14 and does not leak from the cooling oil outlet 12.
このため、エンジン１を再始動しても、シリンダヘッド
２はジャケット３内の冷却油１３により有効に冷却され
る。Therefore, even if the engine 1 is restarted, the cylinder head 2 is effectively cooled by the cooling oil 13 within the jacket 3.
■冷却油入口１０からジャケット３内に流入する冷却油
１３は漏油防止壁１４に沿って上昇し、ジャケット３の
上壁１７に当たって下向きに折り返し、下向き案内壁１
６に沿って下降し、ジャケット３の底壁１５に当たって
上向きに折り返して上昇し、冷却油出口１２から流出す
る。■The cooling oil 13 flowing into the jacket 3 from the cooling oil inlet 10 rises along the oil leakage prevention wall 14, hits the upper wall 17 of the jacket 3, turns downward, and then returns to the downward guide wall 1.
6, hits the bottom wall 15 of the jacket 3, turns upward, rises, and flows out from the cooling oil outlet 12.
このため、ジャケット３の下部の冷却油１３も冷却油入
口１０から順次流入してくる冷却油１３により速やかに
押し出され、シリンダヘッド２が強力に冷却される。Therefore, the cooling oil 13 in the lower part of the jacket 3 is also quickly pushed out by the cooling oil 13 that sequentially flows in from the cooling oil inlet 10, and the cylinder head 2 is strongly cooled.
■ジャケット３内の冷却油１３の一部はジャケット３上
壁１７のロッカアーム用給油孔１８からロッカアーム潤
滑路７に潤滑油として供給される。(2) A part of the cooling oil 13 in the jacket 3 is supplied as lubricating oil to the rocker arm lubrication path 7 from the rocker arm oil supply hole 18 in the upper wall 17 of the jacket 3.
このため、ロッカアーム潤滑路７への給油路の構造が極
めて簡易となる。Therefore, the structure of the oil supply path to the rocker arm lubrication path 7 becomes extremely simple.
［効果］
本発明は、上記のように構成され、作用することから、
次の効果■乃至■を奏する。[Effects] Since the present invention is configured and operates as described above,
Performs the following effects ■ to ■.
■エンジンを停止してもジャケット内の冷却油は漏油防
止壁で堰止められるので、エンジンを再始動してもシリ
ンダヘッドはジャケット内の冷却油により有効に冷却さ
れ、シリンダヘッドの割れを防止できる。■Even if the engine is stopped, the cooling oil inside the jacket is blocked by the oil leakage prevention wall, so even when the engine is restarted, the cylinder head is effectively cooled by the cooling oil inside the jacket, preventing the cylinder head from cracking. can.
■冷却油入口からジャケット内に流入する冷却油は漏油
防止壁及び下向き案内壁に沿って上下に迂回してジャケ
ット内を流れるので、ジャケット内の下部の冷却油も冷
却油入口から順次流入してくる冷却油により速やかに押
し出され、シリンダヘッドの冷却性能が高まる。■The cooling oil that flows into the jacket from the cooling oil inlet detours up and down along the oil leakage prevention wall and the downward guide wall and flows through the jacket, so the cooling oil in the lower part of the jacket also flows sequentially from the cooling oil inlet. The coming cooling oil is quickly pushed out, increasing the cooling performance of the cylinder head.
■ジャケット内の冷却油の一部をジャケット土壁ノロツ
カアーム用給油孔からロッカアーム’ｆｆ１ｒ滑路に潤
滑油として供給できるので、ロッカアーム潤滑路への給
油路の構造が極めて簡易となる。(2) A part of the cooling oil in the jacket can be supplied as lubricating oil to the rocker arm 'ff1r slipway from the jacket earth wall oil supply hole for the rocker arm, so the structure of the oil supply passage to the rocker arm lubrication passage becomes extremely simple.
［実施例コ 本発明の実施例を図面に基づいて説明する。[Example code] Embodiments of the present invention will be described based on the drawings.
第１図乃至第４図は本発明の第１実施例に係るシリンダ
ヘッドを説明する図で、第１図はシリンダヘッドを組み
付けたエンジンの縦断面側面図、第２図は第１図の■〜
■線断面図、第３図は第１図の■−■線断面図、第４図
はエンジンの全体側面図であり、第５図は第２実施例に
係るシリンダヘッドの縦断面側面図である。1 to 4 are diagrams for explaining a cylinder head according to a first embodiment of the present invention. FIG. 1 is a vertical cross-sectional side view of an engine with the cylinder head assembled, and FIG. ~
3 is a sectional view taken along the line ■--■ of FIG. 1, FIG. 4 is an overall side view of the engine, and FIG. 5 is a vertical sectional side view of the cylinder head according to the second embodiment. be.
まず、第１実施例について説明する。First, a first example will be described.
第４図に示すように、符号１は縦形の副燃焼室式ディー
ゼルエンジンであり、このエンジン１はシリンダブロッ
ク２０上にシリンダヘッド２を組み付けて構成されてい
る。As shown in FIG. 4, reference numeral 1 is a vertical auxiliary combustion chamber type diesel engine, and this engine 1 is constructed by assembling a cylinder head 2 on a cylinder block 20. As shown in FIG.
このエンジン１はシリンダブロック２０を空冷するとと
もにシリンダヘッド２を油冷する形式のものであり、冷
却ファン２１で起こした冷却風２２を冷却ファン２１の
圧送力によりファンケース２３からシリンダブロック２
０周囲に供給してシリンダブロック２０を強制空冷する
とともに、第１図に示すようにオイルパン２４内の潤滑
油兼用の冷却油２５を循環ポンプ２６の圧送力により冷
却油供給路２７、シリンダヘッド２内の油冷用ジャケッ
ト３、オイルクーラ２９、冷却油復帰路３０の順に通過
させて循環させ、シリンダヘッド２を油冷するようにな
っている。This engine 1 is of a type in which a cylinder block 20 is air-cooled and a cylinder head 2 is oil-cooled, and cooling air 22 generated by a cooling fan 21 is transferred from a fan case 23 to the cylinder block 2 by the force of the cooling fan 21.
At the same time, as shown in FIG. 1, the cooling oil 25 which also serves as a lubricating oil in the oil pan 24 is pumped through the cooling oil supply path 27 and the cylinder head by the force of the circulation pump 26. The cylinder head 2 is cooled with oil by passing through the oil cooling jacket 3 in the cylinder head 2, the oil cooler 29, and the cooling oil return path 30 in this order.
シリンダヘッド２上にはロッカアームブラケット４が付
設され、これにロッカアーム軸５が水平に取り付けられ
、同軸５両端部にロッカアーム６・６がそれぞれ揺動自
在に枢支されている。A rocker arm bracket 4 is attached to the cylinder head 2, and a rocker arm shaft 5 is horizontally attached to the rocker arm bracket 4, and rocker arms 6 are pivotally supported at both ends of the same shaft 5, respectively.
第３図に示すように、ロッカアームブラケット４内には
潤滑油供給路３１が形成され、ロッカアーム軸５は中空
とされて、その周側面には潤滑油供給路３１に臨まされ
た潤滑油流入孔３２、及びロッカアーム軸５と両口ツカ
アーム６・６との軸受面間８・８に臨まされた潤滑油流
出孔３３が形成され、これによりロッカアームブラケッ
ト４内からロッカアーム軸５内を経て、ロッカアーム軸
５とロッカアーム６との軸受面間８にまでわたってロッ
カアーム潤滑路７が形成されている。As shown in FIG. 3, a lubricating oil supply passage 31 is formed in the rocker arm bracket 4, the rocker arm shaft 5 is hollow, and a lubricating oil inflow hole facing the lubricating oil supply passage 31 is formed on the circumferential side of the rocker arm shaft 5. 32, and a lubricating oil outflow hole 33 facing between the bearing surfaces 8 and 8 of the rocker arm shaft 5 and the double-ended lock arms 6 and 6 is formed. A rocker arm lubrication path 7 is formed extending to a space 8 between the bearing surfaces of the rocker arm 5 and the rocker arm 6.
第２図に示すように、前記油冷用ジャケット３は副燃焼
室３４、吸排気ポート壁３５・３６を取り囲むように形
成され、ジャケット３の右側の底部９には冷却油供給路
２７に連通された冷却油入口１０が開口され、左側の上
部１１にはオイルクーラ２９に連通された冷却油出口１
２が開口されている。As shown in FIG. 2, the oil cooling jacket 3 is formed to surround the auxiliary combustion chamber 34 and the intake/exhaust port walls 35 and 36, and the bottom 9 on the right side of the jacket 3 is connected to a cooling oil supply passage 27. A cooling oil inlet 10 is opened, and a cooling oil outlet 1 connected to an oil cooler 29 is opened at the left upper part 11.
2 is open.
冷却油入口１０の近くにはジャケット３の底壁１５から
上向きに立ち上がらせた漏油防止壁１４が形成され、エ
ンジン停止時にはジャケット３内の冷却油１３を堰止め
て冷却油出口１２から漏れ出るのを防止している。An oil leak prevention wall 14 is formed near the cooling oil inlet 10 and rises upward from the bottom wall 15 of the jacket 3. When the engine is stopped, the oil leak prevention wall 14 is dammed up in the jacket 3 and leaks out from the cooling oil outlet 12. It prevents
漏油防止壁１４の近くにはジャケット３の上壁１７から
下向きに垂れ下がらせた下向き案内壁１６が形成され、
ジャケット３内で漏油防止壁１４上を越えた冷却油１３
を下向きに案内するようにしである。A downward guide wall 16 hanging downward from the upper wall 17 of the jacket 3 is formed near the oil leak prevention wall 14.
Cooling oil 13 that has exceeded the oil leakage prevention wall 14 inside the jacket 3
It is designed so that it is guided downward.
漏油防止壁１４と下向き案内壁１６との間のジャケット
上壁１７にロッカアーム潤滑路７に連通されたロッカア
ーム用給油孔１８が形成され、ジャケット３内を通過す
る冷却油１３の一部がロッカアーム用給油孔１８からロ
ッカアーム潤滑路７を介して前記軸受面間８に冷却油１
３を潤滑油として供給するようにしである。A rocker arm oil supply hole 18 communicating with the rocker arm lubrication path 7 is formed in the jacket upper wall 17 between the oil leakage prevention wall 14 and the downward guide wall 16, and a portion of the cooling oil 13 passing through the jacket 3 is supplied to the rocker arm. Cooling oil 1 is supplied from the oil supply hole 18 to the space between the bearing surfaces 8 through the rocker arm lubrication path 7.
3 is supplied as a lubricating oil.
また、ロッカアーム６には所定の揺動位置でロッカアー
ム軸５の潤滑油流出孔３３と符合するエア抜き孔３７が
それぞれ形成され、ジャケット３内に溜まったエア３８
が冷却油２５に伴われてロッカアーム潤滑路７を通過し
た後にエア抜き孔３７から抜けるようにしである。In addition, air vent holes 37 are formed in the rocker arm 6 at predetermined swing positions to coincide with the lubricating oil outflow hole 33 of the rocker arm shaft 5, and the air 37 that has accumulated in the jacket 3 is removed.
After passing through the rocker arm lubrication path 7 accompanied by the cooling oil 25, it exits from the air vent hole 37.
次に第２実施例について説明する。Next, a second embodiment will be described.
第５図に示すように、この実施例のシリンダヘッド２で
は下向き案内壁１６はその下端部が左方向に向かうよう
に湾曲され、下向き案内壁１６に案内されて下降してき
た冷却油１３が滑らかに再上昇できるようにしである。As shown in FIG. 5, in the cylinder head 2 of this embodiment, the lower end of the downward guide wall 16 is curved toward the left, so that the cooling oil 13 that has been guided by the downward guide wall 16 and descends smoothly. It is possible to rise again.
ロッカアーム用給油孔１８には下向き案内壁１６よりも
左方に形成されているが、下向き案内壁１６の上端部に
は水平なエア抜き連絡孔３９が形成され、下向き案内壁
１６と漏油防止壁１４との間の上部に溜まろうとするエ
ア３８をエア抜き連絡孔３９を通過させてロッカアーム
用給油孔１８に抜けさせるようにしである。The rocker arm oil supply hole 18 is formed to the left of the downward guide wall 16, but a horizontal air vent communication hole 39 is formed at the upper end of the downward guide wall 16 to prevent oil leakage. The air 38 that tends to accumulate in the upper part between the rocker arm and the wall 14 is made to pass through the air vent communication hole 39 and escape to the rocker arm oil supply hole 18.
第１図乃至第４図は本発明の第１実施例に係るシリンダ
ヘッドを説明する図で、第１図はシリンダヘッドを組み
付けたエンジンの縦断面側面図、第２図は第１図の■−
■線断面図、第３図は第１図の■−■線断面図、第４図
はエンジンの全体側面図であり、第５図は第２実施例に
係るシリンダヘッドの縦断面側面図、第６図は従来技術
に係るシ“りンダヘッドの縦断面側面図である。
１・・・エンジン、２・・・シリンダヘッド、３・・・
ジャケット、４・・・ロッカアームブラケット、５・・
・ロッカアーム軸、６・・・ロッカアーム、７・・・ロ
ッカアーム潤滑路、８・・・５と６との軸受面間、９・
・・３の底部、１０・・・冷却油入口、１１・・・３の
上部、１２・・・冷却油出口、１３・・・冷却油、１４
・・・漏油防止壁、１５・・・３の底壁、１６・・・下
向き案内壁、１７・・・３の上壁、１８・・・ロッカア
ーム用給油孔。1 to 4 are diagrams for explaining a cylinder head according to a first embodiment of the present invention. FIG. 1 is a vertical cross-sectional side view of an engine with the cylinder head assembled, and FIG. −
3 is a sectional view taken along the line ■--■ of FIG. 1, FIG. 4 is an overall side view of the engine, and FIG. 5 is a vertical sectional side view of the cylinder head according to the second embodiment. FIG. 6 is a vertical cross-sectional side view of a cylinder head according to the prior art. 1... Engine, 2... Cylinder head, 3...
Jacket, 4...Rocker arm bracket, 5...
・Rocker arm shaft, 6... Rocker arm, 7... Rocker arm lubrication path, 8... Between the bearing surfaces of 5 and 6, 9.
...Bottom of 3, 10...Cooling oil inlet, 11...Top of 3, 12...Cooling oil outlet, 13...Cooling oil, 14
... Oil leak prevention wall, 15 ... Bottom wall of 3, 16 ... Downward guide wall, 17 ... Top wall of 3, 18 ... Oil supply hole for rocker arm.
Claims (1)
冷用ジャケット３を形成し、シリンダヘッド２上にロッ
カアームブラケット４及びロッカアーム軸５を介してロ
ッカアーム６を揺動自在に枢支し、ロッカアーム潤滑路
７をロッカアームブラケット４内からロッカアーム軸５
内を経てロッカアーム軸５とロッカアーム６との軸受面
間８にまでわたつて形成して構成した縦乃至傾斜形エン
ジンの圧送式シリンダヘッド油冷装置において、 ジャケット３の一側の底部９に冷却油入口１０を、他側
の上部１１に冷却油出口１２を開口し、 ジャケット３内の冷却油１３が冷却油入口１０から漏れ
出すことを防止する漏油防止壁１４を、冷却油入口１０
の近くでジャケット３の底壁１５から上向きに立ち上が
らせて形成し、ジャケット３内で漏油防止壁１４を越え
た冷却油１３を下向きに案内する下向き案内壁１６を漏
油防止壁１４の近くでジャケット３の上壁１７から下向
きに垂れ下がらせて形成し、 ジャケット３の上壁１７にロッカアーム用給油孔１８を
あけ、ロッカアーム用給油孔１８にロッカアーム潤滑路
７を連通させた ことを特徴とする縦乃至傾斜形エンジンの圧送式シリン
ダヘッド油冷装置。[Claims] 1. An oil cooling jacket 3 is formed in the cylinder head 2 of a vertical or inclined engine 1, and a rocker arm 6 is swingable on the cylinder head 2 via a rocker arm bracket 4 and a rocker arm shaft 5. The rocker arm lubrication path 7 is connected to the rocker arm shaft 5 from inside the rocker arm bracket 4.
In a pressure-fed cylinder head oil cooling system for a vertical or inclined engine, the cooling oil is formed in the bottom part 9 of one side of the jacket 3, and is configured to extend between the bearing surfaces 8 between the rocker arm shaft 5 and the rocker arm 6. The inlet 10 is opened at the upper part 11 of the other side, and the cooling oil outlet 12 is opened at the upper part 11 on the other side.
A downward guide wall 16 is formed to stand upward from the bottom wall 15 of the jacket 3 near the oil leak prevention wall 14 and guides the cooling oil 13 that has passed over the oil leak prevention wall 14 downward in the jacket 3. The rocker arm oil supply hole 18 is formed to hang downward from the upper wall 17 of the jacket 3, and the rocker arm oil supply hole 18 is formed in the upper wall 17 of the jacket 3, and the rocker arm lubrication path 7 is communicated with the rocker arm oil supply hole 18. Pressure-fed cylinder head oil cooling system for vertical or inclined engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21373389A JPH0378521A (en) | 1989-08-18 | 1989-08-18 | Cylinder head force feed oil cooling device for vertical or inclined type engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21373389A JPH0378521A (en) | 1989-08-18 | 1989-08-18 | Cylinder head force feed oil cooling device for vertical or inclined type engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0378521A true JPH0378521A (en) | 1991-04-03 |
Family
ID=16644102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21373389A Pending JPH0378521A (en) | 1989-08-18 | 1989-08-18 | Cylinder head force feed oil cooling device for vertical or inclined type engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0378521A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5765282A (en) * | 1996-06-26 | 1998-06-16 | Cummins Engine Company, Inc. | Internal combustion engine cylinder head method of manufacture |
-
1989
- 1989-08-18 JP JP21373389A patent/JPH0378521A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5765282A (en) * | 1996-06-26 | 1998-06-16 | Cummins Engine Company, Inc. | Internal combustion engine cylinder head method of manufacture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2007270737A (en) | Oil passage structure in air and oil cooled four-cycle engine | |
| CA2444376C (en) | Breather structure of overhead-valve internal combustion engine | |
| US4681068A (en) | Blow-by gas processing arrangement for automotive internal combustion engines | |
| JP2012140866A (en) | Oil supply device of piston for internal combustion engine | |
| JPH0378521A (en) | Cylinder head force feed oil cooling device for vertical or inclined type engine | |
| JP2006097613A (en) | Oil return passage structure of internal combustion engine | |
| JP2018204579A (en) | Oil passage structure for cooling engine | |
| KR20050013922A (en) | Oil cooling apparatus for engine | |
| JP2577278B2 (en) | Lubrication system in rocker arm chamber for oil-cooled overhead valve engine | |
| JPS62282108A (en) | Method of cooling engine | |
| JPH0437227Y2 (en) | ||
| US11225929B2 (en) | Internal combustion engine | |
| US5243936A (en) | Vertical internal combustion engine with overhead valves | |
| JPH0511296Y2 (en) | ||
| JPH0517374Y2 (en) | ||
| JPS6040803Y2 (en) | Vertical shaft engine | |
| US5159909A (en) | Vertical internal combustion engine with overhead valves | |
| JP2000045860A (en) | Cylinder head cooling device for overhead valve type engine | |
| JP4407425B2 (en) | Engine cooling system | |
| JP2023012837A (en) | Lubrication device for engine | |
| JP4057952B2 (en) | Vertical engine | |
| JPS63170519A (en) | Cylinder head oil cooling device for auxiliary chamber type engine | |
| JPH0717912U (en) | Blow-by gas passage structure | |
| JPH076383B2 (en) | V-type internal combustion engine cooling device | |
| KR100999225B1 (en) | cylinder block structure of an engine |