JPS60533B2 - Combustion chamber sealing device for rotary intake/exhaust type reciprocating engines - Google Patents
Combustion chamber sealing device for rotary intake/exhaust type reciprocating enginesInfo
- Publication number
- JPS60533B2 JPS60533B2 JP14902281A JP14902281A JPS60533B2 JP S60533 B2 JPS60533 B2 JP S60533B2 JP 14902281 A JP14902281 A JP 14902281A JP 14902281 A JP14902281 A JP 14902281A JP S60533 B2 JPS60533 B2 JP S60533B2
- Authority
- JP
- Japan
- Prior art keywords
- intake
- exhaust
- cylindrical
- valve
- combustion 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
- F01L7/02—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves
- F01L7/026—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves with two or more rotary valves, their rotational axes being parallel, e.g. 4-stroke
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
【発明の詳細な説明】
本発明は、ポベットバルブ吸排気式レシプロヱンジンに
対抗する回転吸排気式レシプロェンジンにおいて、燃焼
室内の気密性を良好確実に保持し、吸排気効率を著しく
向上し得る回転吸排気式レシプロェンジンにおける燃焼
室密封装置に係るものにして添付図面を参照に詳述する
と次の通りである。Detailed Description of the Invention The present invention provides a rotary intake/exhaust type reciprocating engine that is opposed to a povet valve intake/exhaust type reciprocating engine. The combustion chamber sealing device for an exhaust type reciprocating engine will be described in detail with reference to the accompanying drawings.
シリンダブロックーの燃焼室２と吸気管３との蓮通路部
分、及び、燃焼室２と排気管４との蓮通路部分に、夫々
吸気用円柱バルブ５、排気用円柱バルブ６を回転自在に
横設し、この吸気・排気用円柱バルブ５，６に夫々一方
外周面から他方外周面へと貫通された吸気用達通孔７及
び排気用達通孔８を穿設し、前記吸気・排気用円柱バル
ブ５，６を、クランク軸の回転に同期したバルブタイミ
ングが得られる速度で回転させ、吸排気を行うようにし
た回転式吸排気式レシプロェンジンにおいて、上記吸気
・排気用円柱バルブ５，６の外周面夫々に、半割筒状の
一対のバルブシートｇａ，９ｂを、密着用バネ１０‘こ
よって内周面を密着状態で被嫉し、このバルブシート９
ａ，９ｂの外周面と円柱バルブ受孔１１内周面との間に
円柱バルブ膨脹間隙ａを形成し、且つ夫々のバルブシー
ト９ａ，９ｂに蓮通窓口１２を穿設し、更にバルブシー
ト９ａ，９ｂの外周面にＬ達通窓口１２を囲む状態で数
個の密封凸条１３を突出続設し、この密封凸条１３に咳
合する数個の密封凹条１４を円柱バルブ受孔１１の内周
面に形成し、この密封凹条１４と密封凸条１３とを咳合
させた状態で円柱バルブ膨脹間隙ａからの圧縮漏洩を防
ぎ、またこの円柱バルブ膨脹間隙ａに流入する燃焼室２
内のガス圧により吸気・排気用円柱バルブ５，６外周面
にバルブシート９ａ内周面を密着させ、燃焼室２内の気
密性を保持するように設けたことを特徴とするものであ
る。An intake cylindrical valve 5 and an exhaust cylindrical valve 6 are rotatably placed horizontally in the lotus passage between the combustion chamber 2 and the intake pipe 3 of the cylinder block, and in the lotus passage between the combustion chamber 2 and the exhaust pipe 4, respectively. The cylindrical intake/exhaust valves 5, 6 are provided with an intake passage hole 7 and an exhaust passage hole 8, which are penetrated from one outer circumferential surface to the other outer circumferential surface, respectively. In a rotary intake/exhaust type reciprocating engine in which the cylindrical valves 5, 6 are rotated at a speed that provides valve timing synchronized with the rotation of the crankshaft to perform intake/exhaust, the intake/exhaust cylindrical valve 5, A pair of half-cylindrical valve seats ga and 9b are placed on each of the outer circumferential surfaces of the valve seats 9 and 9b in close contact with the inner circumferential surfaces of the valve seats 9 and 9, respectively, by a contact spring 10'.
A cylindrical valve expansion gap a is formed between the outer peripheral surface of the valve seats 9a and 9b and the inner peripheral surface of the cylindrical valve receiving hole 11, and a lotus through hole 12 is formed in each of the valve seats 9a and 9b. , 9b, several sealing protrusions 13 are protruded from the outer circumferential surface of the L delivery port 12, and several sealing protrusions 14 that fit into the sealing protrusions 13 are provided on the cylindrical valve receiving hole 11. is formed on the inner circumferential surface of the cylindrical valve expansion gap a to prevent compression leakage from the cylindrical valve expansion gap a with the sealing groove 14 and the sealing protrusion 13 in contact with each other. 2
The valve seat 9a is characterized in that the inner circumferential surface of the valve seat 9a is brought into close contact with the outer circumferential surface of the cylindrical intake/exhaust valves 5 and 6 by the gas pressure inside, thereby maintaining airtightness within the combustion chamber 2.
本図は２気筒４サイクルエンジンを示し、而して吸気用
蓮通孔７、排気用運通孔８は斜孔とし、即ち、混合ガス
は互いに隣接する吸気管３により吸気され、同じく、排
気ガスも隣接する排気管４に排気されるようにし、各々
の円柱パルプ５，６をクランク軸の１／２回転数で回転
させるようにしている。This figure shows a two-cylinder four-stroke engine, and the intake passage hole 7 and exhaust passage hole 8 are oblique holes, that is, the mixed gas is taken in through the intake pipes 3 adjacent to each other, and the exhaust gas The cylindrical pulps 5 and 6 are also evacuated to the adjacent exhaust pipe 4, and each of the cylindrical pulps 5 and 6 is rotated at 1/2 rotation speed of the crankshaft.
また、本図の密封凸条１３、密封凹条１４は、運通窓口
１２に合った四角形状にして３個宛形成されている。Further, the sealing protrusions 13 and the sealing grooves 14 shown in this figure are formed into three rectangular shapes that match the transportation window 12.
符号１５はピストン、１６は点火プラグ「 １７は伝達
ギアである。Reference numeral 15 is a piston, 16 is a spark plug, and 17 is a transmission gear.
また、吸気・排気用円柱バルブ５，６の外周面とバルブ
シート９ａ，９ｂ内周面との間、即ち、沼動面への潤滑
は、吸気・排気用円柱バルブ５，６内を空洞化し、吸気
・排気用円柱バルブ５，６の鯛部から強制的に油を注入
し、吸気・排気用円柱バルブ５，６の外周面にして前記
密着用バネ１０が臨む位置４個所に注油孔１８を穿設し
、一方、バルブシート９ａ，９ｂ内周面に、蓮通窓口１
２の閉口全辺及びバルフシート９ａ，９ｂの外縁に交わ
らないようにして、横方向に延びた油溝１９を形成し、
この油溝１９に前記注油孔１８を介して潤滑油を吐出さ
せ、潤滑するようにしている。In addition, lubrication between the outer circumferential surfaces of the cylindrical intake/exhaust valves 5, 6 and the inner circumferential surfaces of the valve seats 9a, 9b, that is, the wet surfaces, is achieved by hollowing out the insides of the cylindrical intake/exhaust valves 5, 6. Oil is forcibly injected from the main parts of the cylindrical intake/exhaust valves 5, 6, and oil fill holes 18 are formed at four positions on the outer peripheral surfaces of the cylindrical intake/exhaust valves 5, 6, where the sealing spring 10 faces. On the other hand, a lotus port 1 is provided on the inner circumferential surface of the valve seats 9a and 9b.
An oil groove 19 extending in the lateral direction is formed so as not to intersect with all sides of the closed opening of 2 and the outer edges of the valve seats 9a and 9b,
Lubricating oil is discharged into this oil groove 19 through the oil filling hole 18 to provide lubrication.
従来のレシプロェンジンの吸排気装置は、ポベットバル
ブ吸排気式のものが多く、即ち、クランク軸よりチェー
ン，ギャを介してカムシャフトを回転させ、カムにより
夕べットを往復運動させ、この夕べットを介してバルブ
を開閉させるものであるが、クランク軸の回転運動を夕
べットの往復運動に変換させてバルブ開閉を行うことに
よって、運動伝達損失が大きく、振動も大きく、また、
構成部品点数が多く、更には、ポベットバルブ目らが、
吸排気時の抵抗となるという欠陥があり「そこで案出さ
れたのが回転吸排気式であって、即ち吸気・排気用円柱
バルブを回転させるだけで、吸排気を行うものである。Conventional intake and exhaust systems for reciprocating engines are often of the povet valve type; in other words, the camshaft is rotated from the crankshaft via a chain and a gear, and the cam reciprocates the valve. However, by converting the rotational motion of the crankshaft into reciprocating motion of the shaft to open and close the valve, there is a large motion transmission loss and large vibrations.
There are many component parts, and in addition, there are povet valve eyes,
There was a drawback in that it created resistance during intake and exhaust, so the rotary intake and exhaust system was devised, in other words, intake and exhaust were performed simply by rotating the cylindrical valves for intake and exhaust.
しかし円柱バルブは、つねに高熱にさらされ膨脹しｔバ
ルブの直径が変化するものであるから、燃焼室の気密性
を保持することは非常に困難である。本考案はこのよう
な回転吸排気式レシプロェンジンの燃焼室密封装置であ
って、上述のように吸気・排気用円柱バルブ５，６の外
周面夫々に「半割筒状の一対のバルブシート９ａ，９ｂ
を、密着用バネ１０１こよって内周面を密着状態で被蕨
し、このバルブート９ａ，９ｂの外周面と円柱バルブ受
孔１１内周面との間に円柱バルブ膨脹間隙ａを形成し、
且つ夫夫のバルブシート９ａ，９ｂに蓮通窓口１２を穿
設し、更にバルブシート９ａ，９ｂ外周面に、蓮通窓口
１２を囲む状態で数個の密封凸条１３を突出し、この密
封凸条１３に咳合する数個の密封凹条１４を円柱バルブ
受孔１１の内周面に形成することにより「燃焼室２内に
発生した高圧ガスは、密封凸条１３と密封凹条１４との
気密作用によって円柱バルブ膨脹間隙ａからのガス漏洩
が阻止され、極めて確実、良好にシリンダ室２内の気密
性を保持し得ることになる。更に円柱バルブ膨脹間隙ａ
に導入された高圧ガスは、吸気・排気用円柱バルブ５，
６の外周面にバルブシート９ａ内周面を密着させるよう
に作用し、この密着押圧作用は、高圧ガスによって生じ
ることになるので一層確実良好な密着作用が生じ、それ
だけ燃焼室２の気密性を確実良好に保持し得ることにな
る。また、バルブシート９ａ，９ｂは、完全円筒状でな
く、半割筒状の１対で形成され、且つ密着用バネー川こ
よって、吸気・排気用円柱バルブ５，６に被隊されてい
るから、吸気・排気用円柱バルブ５，６が熱膨脹して吸
気・排気用円柱バルフ５，６の直径が変化しても、バル
ブシート９ａ，９ｂ内周面と吸気・排気用円柱バルブ５
，６外周面との不当な隙間は生じなく、一層良好な気密
性を持続し得ることになる。However, since the cylindrical valve is constantly exposed to high heat and expands, causing the diameter of the T-bulb to change, it is very difficult to maintain the airtightness of the combustion chamber. The present invention is a combustion chamber sealing device for such a rotary intake/exhaust type reciprocating engine, and as described above, a pair of half-cylindrical valve seats are provided on the outer peripheral surfaces of the cylindrical intake/exhaust valves 5 and 6, respectively. 9a, 9b
The inner circumferential surface is tightly covered by the adhesion spring 101, and a cylindrical valve expansion gap a is formed between the outer circumferential surface of the valve boots 9a, 9b and the inner circumferential surface of the cylindrical valve receiving hole 11,
In addition, the husband's valve seats 9a and 9b are provided with a lotus passage window 12, and several sealing protrusions 13 are protruded from the outer peripheral surface of the valve seats 9a and 9b in a state surrounding the lotus passage window 12. By forming several seal grooves 14 that fit together with the grooves 13 on the inner peripheral surface of the cylindrical valve receiving hole 11, the high pressure gas generated in the combustion chamber 2 is Gas leakage from the cylindrical valve expansion gap a is prevented by the airtight action of the cylindrical valve expansion gap a, and the airtightness in the cylinder chamber 2 can be maintained extremely reliably and well.Furthermore, the cylindrical valve expansion gap a
The high pressure gas introduced into the intake/exhaust cylindrical valve 5,
The inner circumferential surface of the valve seat 9a is brought into close contact with the outer circumferential surface of the valve seat 9a, and this pressurizing effect is caused by the high-pressure gas. This ensures that it can be held well. Further, the valve seats 9a and 9b are not completely cylindrical, but are formed as a pair of half-cylindrical shapes, and are attached to the cylindrical intake/exhaust valves 5, 6 by means of tight fitting springs. Even if the diameters of the cylindrical intake/exhaust valves 5, 6 change due to thermal expansion, the inner peripheral surfaces of the valve seats 9a, 9b and the cylindrical intake/exhaust valves 5
, 6. An unreasonable gap with the outer circumferential surface does not occur, and even better airtightness can be maintained.
ただしバルブシートの材質は、弾力性があるもとする。However, the material of the valve seat must be elastic.
以上のように本発明によれば、ポベットバルフ吸排気式
レシブロェンジンに対抗する回転吸排気式レシプロェン
ジンにおいて「シリンダ室内の気密性を良好確実に保持
し、吸排気効率を著しく向上し得る等の秀れた実用上の
効果を奏する回転吸排気式レシプロェンジンにおけるシ
リング室密封装置を提供することとなる。As described above, according to the present invention, in a rotary intake/exhaust type reciprocating engine that competes with a pobet-valve intake/exhaust type reciprocating engine, "the airtightness in the cylinder chamber can be maintained well and the airtightness can be maintained well, and the intake/exhaust efficiency can be significantly improved. The present invention provides a shilling chamber sealing device for a rotary intake/exhaust type reciprocating engine that exhibits practical effects.
図面は本発明の一実施例を示すものにして、第１図は縦
断面図、第２図は平面図、第３図は要部の縦断面図、第
４図は要部の斜視図、第５図は円柱バルブの斜視図であ
る。
１……シリンダブロック、２…・・・燃焼室、３……吸
気管、４・…・・排気管、５…・・・吸気用円柱バルブ
、６・・…牧Ｅ気用円柱バルブ、７…・・・吸気用連通
孔、８．・…・排気用達通孔、９ａ，９ｂ．・・．・・
バルフシート、１０……密着用バネ、１１…・・・円柱
バルブ受孔、１２……運通窓口、１３・・・・・・密封
凸条、１４・・・・・・密封凹条、ａ・…・・円柱バル
ブ膨脹間隙。
マス／ム数勢穴 ク雄凶
久そ脇
久ク像
亥物The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view, FIG. 2 is a plan view, FIG. 3 is a longitudinal sectional view of the main part, and FIG. 4 is a perspective view of the main part. FIG. 5 is a perspective view of a cylindrical valve. 1... Cylinder block, 2... Combustion chamber, 3... Intake pipe, 4... Exhaust pipe, 5... Cylindrical valve for intake, 6... Cylindrical valve for Maki E air, 7 ...Intake communication hole, 8. ...Exhaust communication holes, 9a, 9b.・・・．・・・
Valf seat, 10...adhesion spring, 11...cylindrical valve receiving hole, 12...transport window, 13...sealing protrusion, 14...sealing groove, a... ...Cylindrical valve expansion gap. Mass/mu number hole Kuo Kyaku Sowaki Hisaku statue item
Claims (1)
、及び、燃焼室と排気管との連通路部分に、夫夫吸気用
円柱バルブ・排気用円柱バルブを回転自在に横設し、こ
の吸気・排気用円柱バルブに、夫夫一方外周面から他方
外周面へと貫通された吸気用連通孔及び排気用連通孔を
穿設し、前記吸気・排気用円柱バルブを、クランク軸の
回転に同期したバルブタイミングが得られる速度で回転
させ、吸排気を行うようにした回転吸排気式レシプロエ
ンジンにおいて、上記吸気・排気用円柱バルブの外周面
夫々に、半割筒状の一対のバルブシートを密着用バネに
よって内周面を密着状態で被嵌し、このバルブシートの
外周面と円柱バルブ受孔内周面との間に円柱バルブ膨脹
間隙を形成し、且つ夫夫のバルブシートに連通窓口を穿
設し、更にバルブシートの外周面に、連通窓口を囲む状
態で数個の密封凸条を突出繞設し、この密封凸条に咬合
する数個の密封凹条を円柱バルブ受孔の内周面に形成し
、この密封凹条と密封凸条とを咬合させるように設けた
ことを特徴とする回転吸排気式レシプロエンジンにおけ
る燃焼室密封装置。1 A cylindrical intake valve and an exhaust cylindrical valve are rotatably installed horizontally in the communication passage between the combustion chamber and the intake pipe and the communication passage between the combustion chamber and the exhaust pipe of the cylinder block.・The cylindrical exhaust valve is provided with an intake communication hole and an exhaust communication hole that pass through from one outer peripheral surface to the other outer peripheral surface, and the intake and exhaust cylindrical valves are synchronized with the rotation of the crankshaft. In a rotary intake/exhaust type reciprocating engine that rotates at a speed that achieves the desired valve timing for intake and exhaust, a pair of half-cylindrical valve seats are tightly attached to the outer peripheral surfaces of the cylindrical intake and exhaust valves, respectively. The inner circumferential surface is tightly fitted by a spring, and a cylindrical valve expansion gap is formed between the outer circumferential surface of the valve seat and the inner circumferential surface of the cylindrical valve receiving hole, and a communication window is formed in the husband's valve seat. Furthermore, several sealing protrusions are provided protruding from the outer peripheral surface of the valve seat surrounding the communication port, and several sealing protrusions that engage with the sealing protrusions are inserted into the cylindrical valve receiving hole. 1. A combustion chamber sealing device for a rotary intake/exhaust type reciprocating engine, characterized in that the sealing groove is formed on the circumferential surface and the sealing groove and the sealing protrusion are provided so as to interlock with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14902281A JPS60533B2 (en) | 1981-09-21 | 1981-09-21 | Combustion chamber sealing device for rotary intake/exhaust type reciprocating engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14902281A JPS60533B2 (en) | 1981-09-21 | 1981-09-21 | Combustion chamber sealing device for rotary intake/exhaust type reciprocating engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5851208A JPS5851208A (en) | 1983-03-25 |
| JPS60533B2 true JPS60533B2 (en) | 1985-01-08 |
Family
ID=15465952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14902281A Expired JPS60533B2 (en) | 1981-09-21 | 1981-09-21 | Combustion chamber sealing device for rotary intake/exhaust type reciprocating engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60533B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63119806U (en) * | 1987-01-30 | 1988-08-03 | ||
| US5410996A (en) * | 1992-05-26 | 1995-05-02 | Baird; James W. | Rotary valve assembly used with reciprocating engines |
| DE4302648A1 (en) * | 1993-01-30 | 1994-08-11 | Christoph Conradty | Rotary slide valve |
| EP1956217A1 (en) * | 2005-11-18 | 2008-08-13 | Ataka Engineering Co., Ltd. | Internal combustion engine |
-
1981
- 1981-09-21 JP JP14902281A patent/JPS60533B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5851208A (en) | 1983-03-25 |
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