JPS6350443Y2 - - Google Patents
Info
- Publication number
- JPS6350443Y2 JPS6350443Y2 JP13912582U JP13912582U JPS6350443Y2 JP S6350443 Y2 JPS6350443 Y2 JP S6350443Y2 JP 13912582 U JP13912582 U JP 13912582U JP 13912582 U JP13912582 U JP 13912582U JP S6350443 Y2 JPS6350443 Y2 JP S6350443Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder head
- cylinder
- water
- water jacket
- cooling water
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000000498 cooling water Substances 0.000 description 26
- 238000001816 cooling Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000005192 partition Methods 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000006903 response to temperature Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
この考案は水冷式エンジンに関し、特にその水
ジヤケツトに係るものである。[Detailed Description of the Invention] This invention relates to a water-cooled engine, and particularly to its water jacket.
水冷式エンジンには、シリンダ外周およびシリ
ンダヘツド外周に水ジヤケツトが形成され、ウオ
ータポンプから送られる冷却水が水ジヤケツトの
シリンダ側からシリンダヘツド側へと流れ、シリ
ンダヘツド側の出口からラジエータへと戻され
る。 In a water-cooled engine, a water jacket is formed around the outer circumference of the cylinder and the cylinder head, and the cooling water sent from the water pump flows from the cylinder side of the water jacket to the cylinder head side, and returns to the radiator from the outlet on the cylinder head side. It will be done.
従来の水冷式エンジンでは、水ジヤケツトがシ
リンダ部分とシリンダヘツド部分とを含めて一つ
の室として形成されている。このため、水ジヤケ
ツト内の冷却水は、全体的にはシリンダ側からシ
リンダヘツド側へと流れるが、部分的にはその流
れの方向が一定でない。このため冷却水の流れが
ややスムーズでなく、シリンダ全体の冷却バラン
ス等を含めた冷却効果の向上にとつて優利でな
い。 In conventional water-cooled engines, the water jacket is formed as one chamber including a cylinder portion and a cylinder head portion. Therefore, although the cooling water in the water jacket generally flows from the cylinder side to the cylinder head side, the direction of the flow is not constant in some parts. Therefore, the flow of cooling water is not smooth, which is not advantageous in improving the cooling effect including the cooling balance of the entire cylinder.
この考案は上記事情に鑑みてなされたもので、
水ジヤケツト内の冷却水の流れに方向づけがなさ
れて、シリンダ側の入口からシリンダヘツド側の
出口へ向けてスムーズに冷却水が流れ、冷却効果
の向上が果たされる水冷式エンジンを得ることを
目的とするものである。 This idea was made in view of the above circumstances,
The purpose of the present invention is to provide a water-cooled engine in which the flow of cooling water in the water jacket is directed, and the cooling water flows smoothly from the inlet on the cylinder side to the outlet on the cylinder head side, thereby improving the cooling effect. It is something to do.
以下、この考案を２サイクルエンジンに適用し
た一実施例を図面に従つて説明する。 An embodiment in which this invention is applied to a two-stroke engine will be described below with reference to the drawings.
第１図、第２図において、１はシリンダ、２は
シリンダヘツド、３はシリンダヘツドカバー（以
下ヘツドカバーと略す）、４はクランクケース、
５はピストン、６はコンロツド、７はクランク
軸、８はキヤブレータ、９は吸気ポート、１０は
リードバルブ、１１は排気ポート、１２，１３は
掃気ポート、１４はスパークプラグ、１５はシリ
ンダヘツド２をシリンダ１に取り付けるためのボ
ルト、１６はヘツドカバー３をシリンダヘツドに
取り付けるためのボルトである。 In Figures 1 and 2, 1 is a cylinder, 2 is a cylinder head, 3 is a cylinder head cover (hereinafter abbreviated as head cover), 4 is a crankcase,
5 is a piston, 6 is a connecting rod, 7 is a crankshaft, 8 is a carburetor, 9 is an intake port, 10 is a reed valve, 11 is an exhaust port, 12, 13 are scavenging ports, 14 is a spark plug, 15 is a cylinder head 2 Bolts 16 are used to attach the head cover 3 to the cylinder head.
１７は排気圧力の脈動を調整するための膨張室
で、これは排気ポート１１に連通している。 Reference numeral 17 denotes an expansion chamber for adjusting the pulsation of exhaust pressure, which communicates with the exhaust port 11.
シリンダ１の外周には空間部、すなわち水ジヤ
ケツトシリンダ部分１８が形成されている。ま
た、前記ヘツドカバー３はシリンダヘツド２の側
方および上方を覆う形状をなし、シリンダヘツド
２の外面とヘツドカバー３の内面との空間で水ジ
ヤケツトのシリンダヘツド部分１９が形成されて
いる。そして、シリンダヘツド２の外周には横方
向に突出するじやま板２０がシリンダヘツド２と
一体に形成され、このじやま板２０には後述の切
欠き２０ａ（第５図参照）があけられている。こ
のじやま板２０は、水ジヤケツトのシリンダ部分
１８とシリンダヘツド部分をおおむね仕切るとと
もに、前記切欠き２０ａによりシリンダ部分１８
とシリンダヘツド部分とを連通させている。 A space, ie, a water jacket cylinder portion 18, is formed on the outer periphery of the cylinder 1. The head cover 3 is shaped to cover the sides and top of the cylinder head 2, and the space between the outer surface of the cylinder head 2 and the inner surface of the head cover 3 forms a cylinder head portion 19 of the water jacket. On the outer periphery of the cylinder head 2, a laterally projecting baffle plate 20 is integrally formed with the cylinder head 2, and this baffle plate 20 is provided with a notch 20a (see FIG. 5), which will be described later. There is. This border plate 20 roughly partitions the cylinder portion 18 and the cylinder head portion of the water jacket, and the notch 20a allows the cylinder portion 18 to be separated from the cylinder portion 18 of the water jacket.
and the cylinder head portion are communicated with each other.
シリンダ１の詳細を第３図、第４図を参照して
説明すると、２１は図示せぬウオータポンプから
送られる冷却水の入口で、この冷却水入口２１に
排気ポート１１の周囲に形成された冷却水通路１
８ａが連通している。すなわち、排気ポート１１
の下側にも冷却水通路が設けられ（この部分を第
４図で１８′ａで示す）、シリンダ１に入つた新し
い冷却水が直接排気ポート１１の外周に当り、し
かも、その全周を冷却するようにしている。排気
ポート１１部分は特に高温となり易いので、この
ような冷却水通路１８ａは冷却効果を高めるのに
有効である。１８ｂは水ジヤケツトシリンダ部分
１８の吸気ポート９あるいは排気ポート１１より
上の部分を示す。また、１ａは前述のボルト１５
が螺着されるねじ穴である。 The details of the cylinder 1 will be explained with reference to FIGS. 3 and 4. Reference numeral 21 denotes a cooling water inlet sent from a water pump (not shown), and a cooling water inlet 21 is formed around the exhaust port 11. Cooling water passage 1
8a is communicating. That is, the exhaust port 11
A cooling water passage is also provided on the lower side (this part is shown as 18'a in Fig. 4), and the new cooling water entering the cylinder 1 directly hits the outer circumference of the exhaust port 11, and the entire circumference is I'm trying to cool it down. Since the exhaust port 11 portion is particularly susceptible to high temperatures, such a cooling water passage 18a is effective in increasing the cooling effect. Reference numeral 18b indicates a portion of the water jacket cylinder portion 18 above the intake port 9 or the exhaust port 11. In addition, 1a is the bolt 15 mentioned above.
This is the screw hole into which it is screwed.
シリンダヘツド２の詳細を第５図、第６図を参
照して説明すると、前述のじやま板２０は、シリ
ンダヘツド２の外側全周に渡つて設けられている
が、一部に前記切欠き２０ａをもつ。３３は燃焼
室である。２０ｂはヘツドカバー３の膨張室１７
の筒状部３ａをかわすための切欠き、２ａは前述
ボルト１５の挿通孔である。 The details of the cylinder head 2 will be explained with reference to FIGS. 5 and 6. The above-mentioned baffle plate 20 is provided over the entire outer circumference of the cylinder head 2, but the above-mentioned notch is partially provided. It has 20a. 33 is a combustion chamber. 20b is the expansion chamber 17 of the head cover 3
A notch 2a is a hole through which the bolt 15 is inserted.
シリンダヘツドカバー３の詳細を第７図、第８
図を参照して説明すると、２３は冷却水出口、２
４は水温検出器２５を取り付けるねじ穴、２６は
膨張室１７の上面部を形成する蓋２７をヘツドカ
バー３に取り付けるボルト２８用のねじ穴であ
る。また、２９はシリンダヘツド２のスパークプ
ラグ部分の嵌合孔である。また、冷却水出口２３
には、温度に感応してこの冷却水出口２３の開閉
をを行うサーモスタツト弁３０が取付けプレート
３１を介してボルト３２により取り付けられてい
る。 Details of the cylinder head cover 3 are shown in Figures 7 and 8.
To explain with reference to the figure, 23 is a cooling water outlet;
4 is a screw hole for attaching the water temperature detector 25, and 26 is a screw hole for a bolt 28 for attaching the lid 27 forming the upper surface of the expansion chamber 17 to the head cover 3. Further, 29 is a fitting hole for the spark plug portion of the cylinder head 2. In addition, the cooling water outlet 23
A thermostatic valve 30 that opens and closes the cooling water outlet 23 in response to temperature is attached to the cooling water outlet 23 by bolts 32 via a mounting plate 31.
以上の如く構成された水冷式エンジンにおい
て、図示せぬウオータポンプから送られた冷却水
は、冷却水入口２１から排気ポート１１まわりの
冷却水通路１８ａに入り、水ジヤケツトシリンダ
部分１８の排気ポート１１あるいは吸気ポート９
の上の部分１８ｂに流れ、さらに主としてじやま
板２０の切欠き２０ａから水ジヤケツトシリンダ
ヘツド部分１９に流入し、冷却水出口２３から流
出し、図示せぬラジエータへ戻される。上述の流
れにおいては、切欠き２０ａを持つじやま板２０
の存在によつて、冷却水がその切欠き２０ａを通
じて水ジヤケツトシリンダ部分１８から水ジヤケ
ツトシリンダヘツド部分１９へと流れるので、水
ジヤケツト内の流れが部分的に見ても一定方向の
流れとなり、冷却水の流れがスムーズであり、シ
リンダ全体の冷却バランス等を含めた冷却効果の
向上が計られる。 In the water-cooled engine configured as described above, cooling water sent from a water pump (not shown) enters the cooling water passage 18a around the exhaust port 11 from the cooling water inlet 21, and enters the cooling water passage 18a around the exhaust port 11 to the exhaust port of the water jacket cylinder portion 18. 11 or intake port 9
The water flows into the upper portion 18b of the water jacket, further flows into the water jacket cylinder head portion 19 mainly through the notch 20a of the baffle plate 20, flows out from the cooling water outlet 23, and is returned to the radiator (not shown). In the above-mentioned flow, the jamb board 20 having the notch 20a
Due to the presence of the notch 20a, the cooling water flows from the water jacket cylinder portion 18 to the water jacket cylinder head portion 19 through the notch 20a, so that the flow within the water jacket is in a constant direction even when viewed partially. , the flow of cooling water is smooth, improving the cooling effect including the cooling balance of the entire cylinder.
なお、実施例ではじやま板をシリンダヘツド２
側に形成したが、これをシリンダヘツドカバー３
側に形成することもできる。 In addition, in the example, the block plate is attached to the cylinder head 2.
This is attached to the cylinder head cover 3.
It can also be formed on the side.
以上説明したように本考案においては、水ジヤ
ケツトシリンダ部分と水ジヤケツトシリンダヘツ
ド部分とを仕切るじやま板をシリンダヘツドの外
周またはシリンダヘツドカバーの内周に突出形成
するとともに、このじやま板の一部に切欠きを形
成して、水ジヤケツトのシリンダ部分とシリンダ
ヘツド部分とを連通させたので、冷却水がシリン
ダ部分からシリンダヘツド部分へとスムーズに流
れ、冷却効果が向上した。 As explained above, in the present invention, a baffle plate is formed protruding from the outer periphery of the cylinder head or the inner periphery of the cylinder head cover to partition the water jacket cylinder portion and the water jacket cylinder head portion, and this baffle plate is also provided. Since a notch is formed in a part of the water jacket to communicate the cylinder part of the water jacket with the cylinder head part, cooling water flows smoothly from the cylinder part to the cylinder head part, improving the cooling effect.
図面は本考案の一実施例を示すもので、第１図
は水冷式エンジンの要部の断面図、第２図は第１
図における−線断面図、第３図はシリンダの
平面図、第４図は第３図における−線断面
図、第５図はシリンダヘツドの平面図、第６は第
５図における−線断面図、第７図はシリンダ
ヘツドカバーの平面図、第８図は第７図における
−線断面図である。
１……シリンダ、２……シリンダヘツド、３…
…シリンダヘツドカバー、１８……水ジヤケツト
シリンダ部分、１８ａ，１８′ａ……冷却水通路、
１９……水ジヤケツトシリンダヘツド部分、２０
ａ……切欠き、２１……冷却水入口、２３……冷
却水出口、３０……サーモスタツト弁。
The drawings show one embodiment of the present invention, and FIG. 1 is a sectional view of the main parts of a water-cooled engine, and FIG.
3 is a plan view of the cylinder, FIG. 4 is a sectional view taken along the - line in FIG. 3, FIG. 5 is a plan view of the cylinder head, and 6 is a sectional view taken along the - line in FIG. 5. , FIG. 7 is a plan view of the cylinder head cover, and FIG. 8 is a sectional view taken along the line -- in FIG. 7. 1...Cylinder, 2...Cylinder head, 3...
...Cylinder head cover, 18...Water jacket cylinder part, 18a, 18'a...Cooling water passage,
19...Water jacket cylinder head part, 20
a...Notch, 21...Cooling water inlet, 23...Cooling water outlet, 30...Thermostat valve.
Claims (1)
ヘツドの外面とこのシリンダヘツドの側方および
上方を覆うシリンダヘツドカバーの内面とによつ
て形成した水冷式エンジンにおいて、水ジヤケツ
トの前記シリンダヘツド部分と水ジヤケツトのシ
リンダ部分とを仕切るじやま板をシリンダヘツド
外周又はシリンダヘツドカバー内周に突出形成す
るとともに、このじやま板の一部に切欠きを形成
して水ジヤケツトのシリンダ部分とシリンダヘツ
ド部分とを連通させたことを特徴とする水冷式エ
ンジン。 In a water-cooled engine in which the cylinder head portion of the water jacket is formed by the outer surface of the cylinder head and the inner surface of a cylinder head cover that covers the sides and top of the cylinder head, the cylinder head portion of the water jacket and the cylinder of the water jacket are A baffle plate is formed protruding from the outer periphery of the cylinder head or the inner periphery of the cylinder head cover, and a notch is formed in a part of the baffle plate to communicate the cylinder part of the water jacket and the cylinder head part. A water-cooled engine with a unique feature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13912582U JPS5943649U (en) | 1982-09-14 | 1982-09-14 | water cooled engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13912582U JPS5943649U (en) | 1982-09-14 | 1982-09-14 | water cooled engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5943649U JPS5943649U (en) | 1984-03-22 |
| JPS6350443Y2 true JPS6350443Y2 (en) | 1988-12-26 |
Family
ID=30311931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13912582U Granted JPS5943649U (en) | 1982-09-14 | 1982-09-14 | water cooled engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5943649U (en) |
-
1982
- 1982-09-14 JP JP13912582U patent/JPS5943649U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5943649U (en) | 1984-03-22 |
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