JPH0410349Y2 - - Google Patents
Info
- Publication number
- JPH0410349Y2 JPH0410349Y2 JP13521885U JP13521885U JPH0410349Y2 JP H0410349 Y2 JPH0410349 Y2 JP H0410349Y2 JP 13521885 U JP13521885 U JP 13521885U JP 13521885 U JP13521885 U JP 13521885U JP H0410349 Y2 JPH0410349 Y2 JP H0410349Y2
- Authority
- JP
- Japan
- Prior art keywords
- compressed air
- recess
- combustion chamber
- air outlet
- engine
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 33
- 238000000605 extraction Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000009795 derivation Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 241001124569 Lycaenidae Species 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
【考案の詳細な説明】
《産業上の利用分野》
本考案は圧縮空気を取出す装置を備えた容積型
内燃機関に関する。[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a positive displacement internal combustion engine equipped with a device for extracting compressed air.
《従来技術》
従来、圧縮空気で作業を行う場合には、原動機
で駆動されるコンプレツサからの圧縮空気を使用
していた。<<Prior Art>> Conventionally, when working with compressed air, compressed air from a compressor driven by a prime mover was used.
また、本出願人は、特願昭59−239877号や実願
昭60−25193号において、内燃機関の燃焼室の室
壁に圧縮空気出口孔を開設し、この圧縮空気出口
孔に圧縮空気取出弁を取付け、圧縮空気取出し弁
から圧縮空気導管を導出して、燃焼室から圧縮空
気を直接取出すようにしたものを提案した。 Furthermore, in Japanese Patent Application No. 59-239877 and Utility Application No. 60-25193, the present applicant established a compressed air outlet hole in the wall of the combustion chamber of an internal combustion engine, and the compressed air was taken out through this compressed air outlet hole. We proposed a system in which a valve is attached and a compressed air conduit is led out from the compressed air take-off valve to take out compressed air directly from the combustion chamber.
《解決しようとする問題点》
ところが、この先に提案したものは、実願昭60
−25193号のものを例にとれば、第６図に示すよ
うに、圧縮空気出口孔５１の燃焼室５２への開口
端縁がピン角状になつていたことから、この圧縮
空気出口孔５１の開口端縁がヒートポイントにな
つて、プレイグニツシヨンをおこし、燃焼効率が
低下するという問題があることが判つた。《Problem to be solved》 However, the previous proposal was made in the 1980s.
Taking No. 25193 as an example, as shown in FIG. It has been found that there is a problem in that the edge of the opening becomes a heat point, causing pre-ignition and reducing combustion efficiency.
《問題点を解決するための手段》
本考案は先提案のものの問題点を解決するもの
であつて、燃焼室の上壁にガス導出用の凹部を形
成し、この凹部の奥部に圧縮空気出口孔を開口さ
せ、凹部の周縁部分を燃焼室上面に滑らかに連続
する円弧面で形成したことを特徴とするものであ
る。<Means for Solving the Problems> The present invention solves the problems of the previous proposal by forming a recess for gas discharge in the upper wall of the combustion chamber, and injecting compressed air into the inner part of this recess. The outlet hole is open, and the peripheral edge of the recess is formed into an arcuate surface that smoothly continues to the upper surface of the combustion chamber.
《作用》
本考案では燃焼室の上面壁に凹部を形成し、こ
の凹部の奥部に圧縮空気出口孔を開口させるとと
もに、凹部の周縁部分を燃焼室の上壁に滑らかに
連続する円弧面に形成してあるので、凹部にガス
を滞留することなく円滑に導出することができ、
燃焼室の上壁にヒートポイントが生じることがな
い。<Operation> In this invention, a recess is formed in the upper wall of the combustion chamber, a compressed air outlet hole is opened in the deep part of this recess, and the peripheral part of the recess is formed into an arcuate surface that smoothly continues to the upper wall of the combustion chamber. Because the gas is formed in the recess, it can be smoothly drawn out without being retained in the recess.
No heat points are created on the upper wall of the combustion chamber.
《実施例》
第１図は圧縮空気取出装置部分の縦断正面図、
第２図は圧縮空気取出装置を付設した側弁式四サ
イクルエンジンの縦断正面図を示す。《Example》 Figure 1 is a longitudinal sectional front view of the compressed air extraction device.
FIG. 2 shows a longitudinal sectional front view of a side valve type four-stroke engine equipped with a compressed air extraction device.
図において、符号１はエンジン（内燃機関）全
体を示し、このエンジン１はクランクケース（図
外）と一体に形成されたシリンダブロツク２の上
方にシリンダヘツド３を載置固定してエンジン本
体４を形成してある。 In the figure, reference numeral 1 indicates the entire engine (internal combustion engine), and this engine 1 has a cylinder head 3 mounted and fixed above a cylinder block 2 formed integrally with a crankcase (not shown) to form an engine body 4. It has been formed.
シリンダブロツク２のシリンダ５内にはピスト
ン６を上下摺動自在に収容してあり、ピストン６
の上方でシリンダヘツド３との間には点火プラグ
７を臨ませた燃焼室８が形成されている。 A piston 6 is housed in the cylinder 5 of the cylinder block 2 so as to be vertically slidable.
A combustion chamber 8 is formed above and between the cylinder head 3 and the ignition plug 7 facing therein.
点火プラグ７を取付けたシリンダヘツド３には
圧縮空気取出装置９を設けてある。 The cylinder head 3 to which the spark plug 7 is attached is provided with a compressed air extraction device 9.
この圧縮空気取出装置９は第１図に示すよう
に、圧縮空気出口孔１０、圧縮空気取出弁１１、
圧縮空気導管１２及び圧縮空気吹出し口１３を一
連に連通連結して構成してある。 As shown in FIG. 1, this compressed air extraction device 9 includes a compressed air outlet hole 10, a compressed air extraction valve 11,
A compressed air conduit 12 and a compressed air outlet 13 are connected in series.
圧縮空気出口孔１０は燃焼室８の上面壁１４の
うちスキツシユエリア１５に対応する部分に洞設
した凹部１６の奥端部に上下向きで開口してお
り、この凹部１６を介して燃焼室８に連通してい
る。この凹部１６は第３図に示すように、平面視
でシリンダ中心側が細くなるしずく形に、また、
断面視で台形状に形成されている。そして、この
凹部１６の周縁部１７は、燃焼室８の上面壁１４
となるシリンダヘツド３の下面壁に滑らかに連続
する円弧面に形成してある。 The compressed air outlet hole 10 is opened vertically at the inner end of a recess 16 provided in a portion of the upper wall 14 of the combustion chamber 8 corresponding to the squish area 15, and is opened vertically at the inner end of a recess 16 provided in a portion of the upper wall 14 of the combustion chamber 8 corresponding to the squeezing area 15. It is connected to 8. As shown in FIG. 3, this recess 16 has a drop shape that becomes narrower on the cylinder center side in plan view.
It is formed into a trapezoidal shape when viewed in cross section. The peripheral edge 17 of this recess 16 is connected to the upper wall 14 of the combustion chamber 8.
It is formed into an arcuate surface that smoothly continues to the lower wall of the cylinder head 3.
上記のように構成した圧縮空気取出装置付きエ
ンジン１を、例えば第４図に示す刈取結束機１９
に搭載する場合、エンジン１の出力軸（図示略）
は、刈取結束機１９の前半部に設けられた刈取部
２０、中間部に取付けられた結束装置２１及び後
部に設けた駆動輪２２にそれぞれ伝動するように
連結されている。 The engine 1 with the compressed air extraction device configured as described above is used, for example, in a reaping and tying machine 19 shown in FIG.
When installed in the engine, the output shaft of engine 1 (not shown)
are connected so as to transmit power to a reaping section 20 provided at the front half of the reaping and tying machine 19, a tying device 21 attached to the middle section, and a drive wheel 22 provided at the rear.
また、圧縮空気取出装置９の圧縮空気吹出し口
１３は、結束紐２３の近傍から結束装置２１に亘
つて設けた結束紐供給導管２４の紐吸込み口２５
に向けてある。 Further, the compressed air outlet 13 of the compressed air extraction device 9 is connected to the string suction port 25 of the string supply conduit 24 provided from the vicinity of the string 23 to the banding device 21.
It is aimed at
尚、結束紐供給導管２４の始端の紐吸込み口２
５はベルマウス形に形成して、結束紐２３の入り
込みが楽なようにしてあり、終端は、結束装置２
１のニードル２６の結束紐挿通孔２７に臨ませて
開口させてある。 In addition, the string suction port 2 at the starting end of the binding string supply conduit 24
5 is formed into a bell mouth shape so that the binding string 23 can easily enter, and the end is connected to the binding device 2.
The opening faces the binding string insertion hole 27 of the needle 26 of No. 1.
次に、圧縮空気取出装置９の作用を説明する。 Next, the operation of the compressed air extraction device 9 will be explained.
先ず、結束紐２３をテンシヨナー２８を介して
結束紐供給導管２４の紐吸込み口２５に充分に長
く供給した状態で、圧縮空気取出装置９の開弁操
作レバー２９を操作して、圧縮空気取出弁１１の
弁体３０を開く。 First, with the binding string 23 being supplied for a sufficiently long length to the string suction port 25 of the binding string supply conduit 24 via the tensioner 28, the valve opening operation lever 29 of the compressed air extraction device 9 is operated to open the compressed air extraction valve. 11 valve body 30 is opened.
圧縮空気取出弁１１の弁体３０が開かれると、
燃焼室８内で燃焼膨張した高圧の燃焼ガスが圧縮
空気出口孔１０から圧縮空気取出弁１１を通つて
圧縮空気導管１２に取出され、圧縮空気吹出し口
１３から結束紐供給導管２４の紐吸込み口２５に
向けて勢いよく放出される。 When the valve body 30 of the compressed air take-off valve 11 is opened,
High-pressure combustion gas that has been combusted and expanded in the combustion chamber 8 is taken out from the compressed air outlet hole 10 through the compressed air take-off valve 11 to the compressed air conduit 12, and from the compressed air outlet 13 to the string suction port of the binding string supply conduit 24. It will be released vigorously towards the 25th.
因みに、上記のように構成したエンジン１で実
験した結果、燃焼室８内の圧力は変動するが、圧
縮空気取出装置９からは結束紐供給導管２４に結
束紐２３を挿通するのに必要な圧力2.5Kg／cm2を
越える3.0Kg／cm2の圧縮空気を取出すことができ
る。 Incidentally, as a result of an experiment using the engine 1 configured as described above, although the pressure inside the combustion chamber 8 fluctuates, the pressure required to insert the binding cord 23 into the binding cord supply conduit 24 from the compressed air extraction device 9 is the same. It is possible to extract compressed air of 3.0Kg/cm 2 which exceeds 2.5Kg/cm 2 .
こうして、結束紐供給導管２４の紐吸込み口２
５に勢い良く吹き付けられた圧縮空気は、紐吸込
み口２５に供給された結束紐２３をつれて結束紐
供給導管２４内を流れて、結束紐２３を結束装置
２１のニードル２６の紐挿通孔２７に一気に供給
して挿通する。 In this way, the string suction port 2 of the binding string supply conduit 24
The compressed air blown vigorously to the string suction port 25 flows through the string supply conduit 24 , carrying the string 23 supplied to the string suction port 25 , and passes the string 23 through the string insertion hole 27 of the needle 26 of the tying device 21 . Supply it all at once and insert it.
図中符号３１はエンジン上に載置した燃料タン
クである。 Reference numeral 31 in the figure is a fuel tank mounted on the engine.
第５図は本考案の別実施例を示し、これは、圧
縮空気出口孔１０を凹部１６の奥端部で横向きに
開口させたものであり、他の構成は前記実施例と
同様に形成してある。 FIG. 5 shows another embodiment of the present invention, in which the compressed air outlet hole 10 is opened laterally at the inner end of the recess 16, and other structures are formed in the same manner as in the previous embodiment. There is.
なお、上記各実施例では圧縮空気取出装置９を
四サイクル側弁式エンジンに設けるようにしてい
るが、頭上弁エンジンや二サイクルエンジンに付
設するようにしてもよい。また、エンジンから取
出した圧縮空気は、結束紐挿通用の動力源に使用
する場合について述べたが、この他に、コンバイ
ン及びバインダの刈刃の噴気清掃に使用したり、
エンジン１に付設される作業機の各運動部へ潤滑
油を供給する潤滑油ポンプを駆動するための動力
源として利用することができる。 In each of the above embodiments, the compressed air extraction device 9 is installed in a four-cycle side valve type engine, but it may also be installed in an overhead valve engine or a two-stroke engine. In addition, the compressed air taken out from the engine has been described as being used as a power source for inserting binding cords, but in addition to this, it can also be used to clean the cutting blades of combine harvesters and binders,
It can be used as a power source for driving a lubricating oil pump that supplies lubricating oil to each moving part of a working machine attached to the engine 1.
《効果》
本考案では、機関の燃焼室に臨ませて圧縮空気
出口孔を開口し、圧縮空気出口孔に圧縮空気取出
弁を装着しているので、機関の圧縮作用又は燃焼
膨張作用を利用して、機関の燃焼室から圧縮空気
を得るので、コンプレツサやコンプレツサ切換ク
ラツチを省略でき、安価に実施できるうえ、装置
全体を簡素化し、小型化することができる。<<Effects>> In this invention, the compressed air outlet hole is opened facing the combustion chamber of the engine, and a compressed air take-off valve is attached to the compressed air outlet hole, so that the compression effect or combustion expansion effect of the engine can be used. Since compressed air is obtained from the combustion chamber of the engine, a compressor and a compressor switching clutch can be omitted, which can be implemented at low cost, and the entire device can be simplified and downsized.
しかも、燃焼室上壁に凹部を形成し、この凹部
の奥部に圧縮空気排出孔を開口するとともに、凹
部の周縁部を円弧面に形成して燃焼室上壁に滑ら
かに連続させてあるので、凹部にガスを滞留する
ことなく円滑に導出することができるうえ、燃焼
室上壁部分に圧縮空気出口孔を開設したものであ
りながらピン角部がなく、ヒートポイントが生じ
ることがない。これにより、プレイグニツシヨン
をおこすことがなく、燃焼効率が低下することを
防止できる。 Moreover, a recess is formed in the upper wall of the combustion chamber, a compressed air exhaust hole is opened in the deep part of this recess, and the peripheral edge of the recess is formed into an arcuate surface that smoothly continues to the upper wall of the combustion chamber. In addition, gas can be smoothly led out without accumulating in the recess, and even though the compressed air outlet hole is provided in the upper wall of the combustion chamber, there are no pin corners, so no heat points occur. As a result, pre-ignition does not occur and combustion efficiency can be prevented from decreasing.
第１図乃至第５図は本考案の実施例を示し、第
１図は圧縮空気取出装置部分の縦断正面図、第２
図は圧縮空気取出装置を付設した側弁式四サイク
ルエンジンの縦断正面図、第３図はシリンダヘツ
ドの底面図、第４図は本考案の内燃機関をバイン
ダに搭載した状態の全体斜視図、第５図は別実施
例の要部縦断面図、第６図は本出願人が先に提案
したものの第２図相当図である。
１……内燃機関、８……燃焼室、１０……圧縮
空気出口孔、１１……圧縮空気取出弁、１２……
圧縮空気導管、１３……圧縮空気吹出し口、１４
……燃焼室上壁面、１６……凹部、１７……凹部
の周縁部。
1 to 5 show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of the compressed air extraction device,
The figure is a longitudinal sectional front view of a side valve type four-stroke engine equipped with a compressed air extraction device, Figure 3 is a bottom view of the cylinder head, and Figure 4 is an overall perspective view of the internal combustion engine of the present invention mounted on a binder. FIG. 5 is a vertical cross-sectional view of a main part of another embodiment, and FIG. 6 is a view corresponding to FIG. 2 of the device previously proposed by the applicant. DESCRIPTION OF SYMBOLS 1... Internal combustion engine, 8... Combustion chamber, 10... Compressed air outlet hole, 11... Compressed air take-off valve, 12...
Compressed air conduit, 13... Compressed air outlet, 14
... Combustion chamber upper wall surface, 16 ... recess, 17 ... peripheral edge of recess.
Claims (1)
４にガス導出用の凹部１６を形成し、この凹部１
６の奥部に圧縮空気出口孔１０を開口し、圧縮空
気出口孔１０に圧縮空気取出弁１１を装着し、圧
縮空気取出弁１１から圧縮空気導管１２を導出
し、圧縮空気導管１２の先端に圧縮空気吹出し口
１３を設け、燃焼室上壁面１４に形成した凹部１
６の周縁部１７を燃焼室上壁面１４に滑らかに連
続する円弧面で形成したことを特徴とする圧縮空
気取出装置付き容積形内燃機関。 Upper wall surface 1 in combustion chamber 8 of positive displacement internal combustion engine 1
A recess 16 for gas derivation is formed in the recess 1.
6, a compressed air outlet hole 10 is opened in the back of the compressed air outlet hole 10, a compressed air take-off valve 11 is attached to the compressed air outlet hole 10, a compressed air conduit 12 is led out from the compressed air take-out valve 11, and a A recess 1 provided with a compressed air outlet 13 and formed in the upper wall surface 14 of the combustion chamber.
6. A positive displacement internal combustion engine with a compressed air extraction device, characterized in that a peripheral edge 17 of the cylinder 6 is formed as an arcuate surface that smoothly continues to the upper wall surface 14 of the combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13521885U JPH0410349Y2 (en) | 1985-09-04 | 1985-09-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13521885U JPH0410349Y2 (en) | 1985-09-04 | 1985-09-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6243138U JPS6243138U (en) | 1987-03-16 |
| JPH0410349Y2 true JPH0410349Y2 (en) | 1992-03-13 |
Family
ID=31037193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13521885U Expired JPH0410349Y2 (en) | 1985-09-04 | 1985-09-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0410349Y2 (en) |
-
1985
- 1985-09-04 JP JP13521885U patent/JPH0410349Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6243138U (en) | 1987-03-16 |
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