JPS6134314A - Internal-combustion engine - Google Patents
Internal-combustion engineInfo
- Publication number
- JPS6134314A JPS6134314A JP15508484A JP15508484A JPS6134314A JP S6134314 A JPS6134314 A JP S6134314A JP 15508484 A JP15508484 A JP 15508484A JP 15508484 A JP15508484 A JP 15508484A JP S6134314 A JPS6134314 A JP S6134314A
- Authority
- JP
- Japan
- Prior art keywords
- intake
- cylinder
- valve
- exhaust
- hole
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/04—Air cleaners specially arranged with respect to engine, to intake system or specially adapted to vehicle; Mounting thereon ; Combinations with other devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は吸、排気弁をシリンダの側方に配Ｗｆ ”ｌ”
る側弁式の内燃機関に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention provides a system in which intake and exhaust valves are disposed on the side of the cylinder.
This invention relates to a side valve type internal combustion engine.
（従来技術及びその問題点）
従来の側弁式内燃機関は、吸気孔及びり！気孔がシリン
ダの同一側の側面に並べて配置されＣいる。(Prior art and its problems) Conventional side valve type internal combustion engines have no intake holes! The pores are arranged side by side on the same side of the cylinder.
従って吸気孔に接続する気化器及びエアークリーナと、
排気孔に接続づ゛るマフラーが接近してしまい、１アー
クリープ及びマフラーの容積を充分に取ることができな
い。そのためにエアークリーナの耐ダスト性能及びマフ
ラーの消音性能の向上を図ることは困難であった。Therefore, a vaporizer and an air cleaner connected to the intake hole,
The muffler connected to the exhaust hole is too close to each other, making it impossible to obtain sufficient arc creep and muffler volume. For this reason, it has been difficult to improve the dust resistance performance of the air cleaner and the muffling performance of the muffler.
また従来の側弁式内燃機関では、吸、ｕ１気弁はビス１
−ンの片方の側に配置されているため、燃焼亨がシリン
ダ中心線り向に見て吸、排気弁側へと大ぎく延びる偏平
形になると共に、作動ガスの流れがカランターフＬ１−
となる。そのために用縮比の向上が困難になると共にガ
スの充填効率の向ｌｘも困難になる。In addition, in conventional side-valve internal combustion engines, the suction and U1 air valves are screw 1
Since the combustion chamber is located on one side of the cylinder turf L1-, the combustion chamber has a flat shape that extends greatly toward the intake and exhaust valve sides when viewed in the direction of the cylinder centerline, and the flow of working gas is
becomes. This makes it difficult to improve the reduction ratio and also to improve the gas filling efficiency.
なお上記のような不具合を解消するために特開昭５９−
７０８３８のにうな内燃機関も考某されているが、吸、
排気弁配置を頭」：弁穴としているため、」−ンジン全
高が高くなり、かつニｌストｂ高くなるという不具合が
ある。In addition, in order to eliminate the above-mentioned problems,
70838's internal combustion engine is also being considered, but
Since the exhaust valve is arranged as a head valve hole, there is a problem that the overall height of the engine becomes high and the exhaust valve becomes high.
（問題を解決するだめの手段）
本発明は上記問題を解決するために、吸、排気弁配置を
側弁式とし、吸気孔をシリンダの−側面に、排気孔をそ
の反対側の側面に間口し、吸気弁を吸気孔側に、排気弁
を排気孔側に配置している１゜’ｍ７Ｕ゛ｃｔ’＊’Ｒ
２＃ｔＮｆ’Ｍ’Ｌ、、ｌ＝ ４１Ｊ、（ｚ／ｂｒｑ？
ｉ［ｍｌの水平断面図であり、この第１図に置いで、１
はシリンダ、２はクランク軸、３はフライホイールであ
って、フライホイール３はクランク軸２の先端部に固着
され、フライホイール３には冷却ファン４が設番プられ
ている。シリンダ１及び７ンノン４はファンハウジング
５により囲まれている。(Means for Solving the Problem) In order to solve the above problem, the present invention adopts a side valve arrangement for the intake and exhaust valves, and has an intake hole on the side of the cylinder and an exhaust hole on the opposite side. 1゜'m7U゛ct'*'R, where the intake valve is placed on the intake hole side and the exhaust valve is placed on the exhaust hole side.
2#tNf'M'L,,l=41J,(z/brq?
This is a horizontal cross-sectional view of i[ml, and in this Figure 1, 1
2 is a cylinder, 2 is a crankshaft, and 3 is a flywheel. The flywheel 3 is fixed to the tip of the crankshaft 2, and a cooling fan 4 is installed on the flywheel 3. The cylinders 1 and 7 are surrounded by a fan housing 5.
シリンダ１に形成される吸、排気孔６．７はクランク軸
２の軸線に対しｔ左右両側に配置され、吸気孔６はシリ
ンダ１の一側面、例えば第１図の左側面に間口し、ｎト
気孔７はその反対側の側面（第１図の右側面）に間口し
ている。吸気孔６には気化器８及びエアークリープ９が
接続し、排気孔ｌにはマフラー１０が接続している。The intake and exhaust holes 6.7 formed in the cylinder 1 are arranged on both left and right sides of the crankshaft 2, and the intake hole 6 opens on one side of the cylinder 1, for example, the left side in FIG. The air hole 7 opens on the opposite side (the right side in FIG. 1). A carburetor 8 and an air creep 9 are connected to the intake hole 6, and a muffler 10 is connected to the exhaust hole 1.
吸、排気弁１１．１２はシリンダ１に側弁式に配置され
ており、しかも吸気弁１１は吸気孔６側に、排気弁１２
は排気孔側に別れて配置されている。吸、排気弁作動用
のカム軸１４は例えばクシ゛ ンク軸２に対して直角に
配置されている。まｌｃ両弁１１．１２は例えば下方へ
行くに従ってフライホイール３側に来るように少し傾い
ており、それぞれカム軸１４に連動し°（いる。The intake and exhaust valves 11 and 12 are arranged in a side-valve manner in the cylinder 1, and the intake valve 11 is arranged on the intake hole 6 side, and the exhaust valve 12 is arranged on the side of the intake hole 6.
are arranged separately on the exhaust hole side. A camshaft 14 for operating the intake and exhaust valves is arranged, for example, at right angles to the shank shaft 2. For example, both valves 11 and 12 are slightly inclined toward the flywheel 3 as they go downward, and are linked to the camshaft 14, respectively.
シリンダ１の内周面１ａの形状及びピストン１５の外周
面の形状は、吸、排気弁１１．１２を結ぶ方向の径を短
径とす°る長円形状に形成されている。いいかえるとク
ランク軸２の長さ方向に長い長円形状に形成し、両弁１
１．１２間の間隔が広くなり過ぎないようにしくいる。The shape of the inner circumferential surface 1a of the cylinder 1 and the shape of the outer circumferential surface of the piston 15 are formed into an ellipse shape with the short diameter being the diameter in the direction connecting the intake and exhaust valves 11 and 12. In other words, the crankshaft 2 is formed into a long oval shape in the longitudinal direction, and both valves 1
1. Make sure that the interval between 12 and 12 does not become too wide.
即ちシリンダ１の内周面１ａのクランク軸長さ方向の長
さと、両弁１１１．１２間の間隔を概ね揃えるようにす
ることにより、燃焼室の偏平化を防いでいる。That is, by making the length of the inner circumferential surface 1a of the cylinder 1 in the crankshaft length direction and the interval between the valves 111, 12 approximately the same, flattening of the combustion chamber is prevented.
第２図は第１図のＩＩ −、ＩＩ断面図であり、１６は
クランクケース、１７はシリンダヘッドひある。FIG. 2 is a sectional view taken along the line II--II of FIG. 1, where 16 is a crankcase and 17 is a cylinder head.
第３図は第１図の■−■断面略図であり、２０は点火プ
ラグ、２１は燃焼ｙ（−ある。 １
（作用）
エアークリーナ９から吸入される空気は気化器８、吸気
孔６及び吸気弁１１を介して燃焼室２１に入る。燃焼後
のｖ１気ガスは排気弁１２、排気孔７及びマフラー１０
を介して〃１出される。また作動ガスはり１］スフロ一
型式で第・１図の左から右へと流れることになる。FIG. 3 is a schematic cross-sectional view taken along the line ■-■ in FIG.
(Operation) Air taken in from the air cleaner 9 enters the combustion chamber 21 via the carburetor 8, the intake hole 6, and the intake valve 11. The V1 gas after combustion is passed through the exhaust valve 12, the exhaust hole 7 and the muffler 10.
〃1 is issued via. In addition, the working gas beam 1] flows from the left to the right in Figure 1 in the Suflo type.
（別の実施例）
（１）カム軸を２本備え、吸気弁用ど４７１気弁用にそ
れぞれ利用するようにしてもにい５．その場合の２本の
カム軸はクランク軸ど平行に配置ザる。(Another embodiment) (1) It is possible to have two camshafts and use them respectively for intake valves and other air valves.5. In that case, the two camshafts are arranged parallel to the crankshaft.
〈２）クランク軸を垂直に配置するいわゆるバーチカル
形の内燃機関に本発明を適用することもできる。(2) The present invention can also be applied to a so-called vertical internal combustion engine in which the crankshaft is arranged vertically.
（発明の効果）
（１）吸気孔と排気孔をシリンダの互いに反対側に間口
しているので、エアークリーナとマフラーをシリンダの
両側に分けて配置することができる。(Effects of the Invention) (1) Since the intake hole and the exhaust hole are located on opposite sides of the cylinder, the air cleaner and the muffler can be placed separately on both sides of the cylinder.
従・つてエアークリーナとマフラーの容積を充分に大き
く取ることができ、それにＪ：リコーアークリーナの耐
ダスト性能を向上させることが【・きると共に、エアー
クリーナ及びマフラーの消音性能を向上させることもで
きる。Therefore, the volume of the air cleaner and muffler can be made sufficiently large, and the dust resistance performance of the Ricoh cleaner can be improved.At the same time, the noise reduction performance of the air cleaner and muffler can also be improved. can.
（２）気化器をマフラーから離して配置することができ
るので、気化器に対するマフラーの熱の影響は殆んどな
くなり、バーフレイシュ１ン等のトラブルを未然に防ぐ
ことができる。(2) Since the carburetor can be placed away from the muffler, the effect of heat from the muffler on the carburetor is almost eliminated, and troubles such as bar rash can be prevented.
（３）吸気弁と排気弁がピストンを挟んで例えば左右両
側に配置されているため、作動ガスの流れがクロスフＬ
１−となり、従来のようなカランターフ［ｊ−の場合に
比べて吸気及び排気が円滑になり、差動ガスの充填効率
も向上する。(3) Since the intake valve and exhaust valve are arranged on both sides of the piston, for example, the flow of working gas is
1-, the air intake and exhaust becomes smoother than in the case of the conventional caranturf [j-, and the filling efficiency of the differential gas is also improved.
（４）吸気弁と排気弁を側弁式に配置しているので、頭
上弁式のものに比べ、エンジンの全高を低くすることが
でき、またコストを低く抑えることもできる。(4) Since the intake valve and exhaust valve are arranged in a side valve type, the overall height of the engine can be lowered compared to an overhead valve type, and costs can also be kept low.
（５）吸気孔と排気孔をビス１−ンの両側に分けている
ので、例えば冷却ファンによる冷却風を吸気孔部分用と
排気孔部分用とに良好に分配することができ、従来のよ
うに吸気孔と排気孔とをピストンの同一側に配置してい
る場合に比べ、シリンダを充分に冷却することができる
。(5) Since the intake hole and the exhaust hole are separated on both sides of the screw, for example, the cooling air from a cooling fan can be well distributed between the intake hole and the exhaust hole, unlike the conventional method. Compared to the case where the intake hole and the exhaust hole are arranged on the same side of the piston, the cylinder can be sufficiently cooled.
（６）吸気弁及び排気弁をピストンの両側に配置Ｊ−る
ようにしているので、従来のように両弁をピストンの片
方に配置する場合に比べ、燃焼室が偏平になる度合は少
なくなり、圧縮比の向−トを図ることができる。またそ
れに加え、シリンダの内周面形状及びビス］ヘンの外周
面形状を、吸、排気弁を結ぶ方向の径を短径とする長円
形状に形成り−ると、吸、〃１−気弁の間隔を短くする
ことができ、それにより燃焼室が偏平になる度合はより
一層少なくなり、圧縮比をより一層向上させることがで
きる。(6) Since the intake and exhaust valves are placed on both sides of the piston, the degree to which the combustion chamber becomes flat is reduced compared to the conventional case where both valves are placed on one side of the piston. , the compression ratio can be adjusted. In addition, if the inner circumferential surface of the cylinder and the outer circumferential surface of the screw are formed into an oval shape with the short diameter in the direction connecting the intake and exhaust valves, The spacing between the valves can be shortened, which further reduces the degree of flattening of the combustion chamber and further improves the compression ratio.
第１図は本発明を適用した４サイクル内燃機関の水平断
面図、第２図は第１図の■−■断面図、第３図は第１図
の■−■断面略図である。１・・・シリンダ、６・・・
吸気孔、７・・・ＪＪｌ気孔、１１・・・吸気弁、１２
・・・排気弁FIG. 1 is a horizontal cross-sectional view of a four-cycle internal combustion engine to which the present invention is applied, FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a schematic cross-sectional view taken along the line ■-■ in FIG. 1... cylinder, 6...
Intake hole, 7... JJl air hole, 11... Intake valve, 12
...exhaust valve
Claims (2)
の一側面に、排気孔をその反対側の側面に間口し、吸気
弁は吸気孔側に、排気弁は排気孔側に配置したことを特
徴とする内燃機関。(1) The intake and exhaust valves are arranged as side valves, with the intake hole on one side of the cylinder and the exhaust hole on the opposite side, with the intake valve on the intake hole side and the exhaust valve on the exhaust hole side. An internal combustion engine characterized by the following arrangement.
を、吸、排気弁を結ぶ方向の径を短径とする長円形状に
形成したことを特徴とする特許請求の範囲第１項に記載
の内燃機関。(2) The outer circumferential surface of the piston and the inner circumferential surface of the cylinder are formed into an elliptical shape with the short diameter in the direction connecting the intake and exhaust valves. Internal combustion engine as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15508484A JPS6134314A (en) | 1984-07-25 | 1984-07-25 | Internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15508484A JPS6134314A (en) | 1984-07-25 | 1984-07-25 | Internal-combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6134314A true JPS6134314A (en) | 1986-02-18 |
| JPH0262686B2 JPH0262686B2 (en) | 1990-12-26 |
Family
ID=15598302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15508484A Granted JPS6134314A (en) | 1984-07-25 | 1984-07-25 | Internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6134314A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS522002U (en) * | 1975-06-24 | 1977-01-08 | ||
| JPS5970838A (en) * | 1982-10-15 | 1984-04-21 | Honda Motor Co Ltd | Vertical internal-combustion engine for general use |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE380298B (en) * | 1974-03-14 | 1975-11-03 | Mo | PROCEDURE FOR DELIGNIFICATION BY ACID-ALKALI TREATMENT OF LIGNOCELLUOSA-CONTAINING MATERIAL |
-
1984
- 1984-07-25 JP JP15508484A patent/JPS6134314A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS522002U (en) * | 1975-06-24 | 1977-01-08 | ||
| JPS5970838A (en) * | 1982-10-15 | 1984-04-21 | Honda Motor Co Ltd | Vertical internal-combustion engine for general use |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0262686B2 (en) | 1990-12-26 |
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