JPH04148033A - Rotary engine - Google Patents
Rotary engineInfo
- Publication number
- JPH04148033A JPH04148033A JP2268685A JP26868590A JPH04148033A JP H04148033 A JPH04148033 A JP H04148033A JP 2268685 A JP2268685 A JP 2268685A JP 26868590 A JP26868590 A JP 26868590A JP H04148033 A JPH04148033 A JP H04148033A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- intake
- exhaust
- working chamber
- combustion
- 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
- 238000002485 combustion reaction Methods 0.000 abstract description 20
- 230000006835 compression Effects 0.000 abstract description 9
- 238000007906 compression Methods 0.000 abstract description 9
- 238000004880 explosion Methods 0.000 description 4
- 239000000567 combustion gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Classifications
-
- 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
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B53/04—Charge admission or combustion-gas discharge
-
- 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
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B2053/005—Wankel engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Supercharger (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はまゆ形ハウジングとおむすび形ロータによって
画成される三つの作動室によって吸入、圧縮、燃焼、排
気行程がなされるロータリーエンジンに関するものであ
る。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a rotary engine in which suction, compression, combustion, and exhaust strokes are performed by three working chambers defined by a cocoon-shaped housing and a rice ball-shaped rotor. be.
［従来の技術］
従来この種のロータリーエンジンとして第８図乃至第１
１図の構造のものが知られている。[Prior art] Conventionally, this type of rotary engine is shown in Fig. 8 to Fig. 1.
The structure shown in Figure 1 is known.
この従来構造のものは、図示省略のテンションボルトに
より組み付けられるロータハウジング１及び少なくとも
二個のサイドハウジング２からなる空間に三つの作動室
３を画成して略三角形状のロータ４を配置し、サイドハ
ウジング２間にロータ４を支える偏心部５を有する偏心
軸６を軸受し、一方のサイドハウジング２に外歯車状の
固定ギヤ７を取付るとともにこれに歯合する内歯車状の
ロータギヤ８をロータ４に取付け、ロータギヤ８と固定
ギヤとの歯数比を３＝２に設定し、作動室３に連なる吸
気ポート９及び排気ポート１ｏをロータハウジング１に
一個ずつ形成し、がっロータハウジング１に作動室３に
臨む点火プラグ１１をこの場合二個差べて取付けて構成
している。In this conventional structure, three working chambers 3 are defined in a space consisting of a rotor housing 1 and at least two side housings 2, which are assembled by tension bolts (not shown), and a substantially triangular rotor 4 is arranged. An eccentric shaft 6 having an eccentric portion 5 that supports the rotor 4 is supported between the side housings 2, and an external gear-shaped fixed gear 7 is attached to one side housing 2, and an internal gear-shaped rotor gear 8 is meshed with the fixed gear 7. It is attached to the rotor 4, the tooth ratio of the rotor gear 8 and the fixed gear is set to 3=2, and one intake port 9 and one exhaust port 1o connected to the working chamber 3 are formed in the rotor housing 1. In this case, two spark plugs 11 facing the working chamber 3 are installed separately.
しかして三つの作動室３ａ・３ｂ・３ｃの内の一つの作
動室３ａに着目すると第８図から第９図の如くロータ４
が時計回りに回転すると作動室３ａの容積は最小から最
大へと増加し、この容積増加によって生ずる負圧の作用
で混合ガスは吸気ポート１０から吸入され、次いで第９
図から第１０図へと更にロータ４が回動すると逆に作動
室３ａの容積は最大から最小へと変化して混合ガスは圧
縮され、この第１０図の状態で点火プラグ１１によって
点火され、燃焼ガスはロータ４の外周面に圧力を及ぼし
つつ膨張を始め、第１１図の如く作動室３ａの容積は増
加して行き、更なるロータ４の回転により第１１図から
第８図の如く作動室３ａの容積は再び減少に転じ、燃焼
ガスは排気ポート１０から排気されることになる。However, if we focus on one of the three working chambers 3a, 3b, and 3c, the rotor 4 as shown in FIGS.
As it rotates clockwise, the volume of the working chamber 3a increases from the minimum to the maximum, and the mixed gas is sucked in from the intake port 10 due to the negative pressure generated by this volume increase, and then the 9th
When the rotor 4 further rotates from the figure to FIG. 10, the volume of the working chamber 3a changes from the maximum to the minimum, the mixed gas is compressed, and in this state shown in FIG. 10, it is ignited by the spark plug 11. The combustion gas begins to expand while exerting pressure on the outer circumferential surface of the rotor 4, and the volume of the working chamber 3a increases as shown in FIG. 11. As the rotor 4 further rotates, the operation begins as shown in FIGS. The volume of the chamber 3a starts to decrease again, and the combustion gas is exhausted from the exhaust port 10.
このようにロータ４は偏心軸６を中心として自転しつつ
公転運動し、このとき刻々と三つの作動室３の容積は変
化することになり、このロータ４の一回転で偏心軸６は
三回転し、吸入、圧縮、燃焼、排気の四行程がそれぞれ
三つの作動室３ａ・３ｂ・３ｃでなされ、このためロー
タ４の一回転につき燃焼は三回行われ、このことから偏
心軸６の一回転光たり一回の燃焼爆発がなされているこ
とになる。In this way, the rotor 4 rotates and revolves around the eccentric shaft 6, and the volumes of the three working chambers 3 change every moment, and one rotation of the rotor 4 causes the eccentric shaft 6 to rotate three times. However, the four strokes of suction, compression, combustion, and exhaust are performed in the three working chambers 3a, 3b, and 3c, and therefore, combustion occurs three times for each rotation of the rotor 4, and from this, one rotation of the eccentric shaft 6 This means that each flash of light is a single combustion explosion.
［発明が解決しようとする課題］
ところでロータリーエンジンは、レシプロエンジンに比
較して、構造が遥かにシンプであることやクランク・コ
ネクティングロッド機構が無いため往復運動する部分を
持たず、このため振動が少ないことや小型軽量であるこ
と等々の幾多の特徴を有している。[Problem to be solved by the invention] By the way, rotary engines have a much simpler structure than reciprocating engines, and do not have a crank or connecting rod mechanism, so they do not have any reciprocating parts, so they do not generate vibrations. It has many characteristics such as small size, small size and light weight.
しかしながら高速回転になるとロータ４の一回転につき
なされる三回の断続的な燃焼爆発作動やロータの偏心運
動に伴う不釣り合い回転が影蕾を及ぼすこともあって、
気筒の振動が激しく生じ、また作動室３の容積が小さい
こと等から出力トルクが小さくなりがちであり、このた
めこれらを改善する要求が高まっている。However, when rotating at high speeds, the three intermittent combustion explosions that occur per rotation of the rotor 4 and the unbalanced rotation caused by the eccentric movement of the rotor can have negative effects.
Because the cylinders vibrate violently and the volume of the working chamber 3 is small, the output torque tends to be small, and therefore there is an increasing demand for improving these problems.
［課題を解決するための手段］
本発明はこれらの不都合を解決することを目的とするも
ので、その要旨は、ロータハウジング及びサイドハウジ
ングからなる空間に三つの作動室を画成して配置される
略三角形状のロータと、該ロータを支える偏心部を有す
る偏心軸と、固定ギヤ及びこれに歯合するロータギヤと
、該作動室に連なる吸気ポート及び排気ポートと、該作
動室に臨む点火プラグとを備え、上記点火プラグ及び上
記排気ポートを対向する二位置に配置し、上記サイドハ
ウジングに上記吸気ポートを対向する二位置に形成し、
かつ上記ロータに該排気ポートと作動室とを連通可能な
三つの連通路を形成して構成したことを特徴とするロー
タリーエンジンにある。[Means for Solving the Problems] The present invention aims to solve these inconveniences, and its gist is to provide a rotor housing and a side housing that define three working chambers. a substantially triangular rotor, an eccentric shaft having an eccentric portion that supports the rotor, a fixed gear and a rotor gear meshing therewith, an intake port and an exhaust port connected to the working chamber, and a spark plug facing the working chamber. , the spark plug and the exhaust port are arranged in two opposing positions, and the intake port is formed in the side housing in two opposing positions,
The rotary engine is characterized in that the rotor is configured with three communication passages that can communicate between the exhaust port and the working chamber.
［作用］
ロータハウジングの対向する二位置に配置された点火プ
ラグはロータの一回転につきそれぞれ三回ずつ計六回点
火し、かつロータハウジングの対向する二位置に配置さ
れた排気ポートから燃焼ガスがロータの一回転につきそ
れぞれ三回ずつ計六回排気されることになり、さらにサ
イドハウジングの対向する二位置に形成された吸気ポー
トからはロータに設けた三つの連通路を介してロータの
一回転につきそれぞれ三回ずつ計六回吸気ポートに連通
して作動室への吸気作動をする。[Function] The ignition plugs placed at two opposing positions on the rotor housing ignite six times, three times each per revolution of the rotor, and combustion gas is discharged from the exhaust ports placed at two opposing positions on the rotor housing. The air is exhausted six times in total, three times for each rotation of the rotor, and the intake ports formed at two opposing positions on the side housing are routed through three communication passages provided in the rotor for one rotation of the rotor. It communicates with the intake port a total of six times, three times each, and performs the intake operation to the working chamber.
［実施例］ 第１図乃至第７図は本発明の実施例を示している。[Example] 1 to 7 show embodiments of the present invention.
尚、上記第８図乃至第１１図の従来構造と同一態様部分
には同符号を引用する。Incidentally, the same reference numerals are used for the same parts as the conventional structure shown in FIGS. 8 to 11 above.
１はロータハウジングであって、このロータハウジング
１及び少なくとも二個のサイドハウジング２からなる空
間に三つの作動室３を画成して略三角形状のロータ４を
配置し、サイドハウジング２閏にロータ４を支える偏心
部５を有する偏心軸６を軸受し、一方のサイドハウジン
グ２に外歯車状の固定ギヤ７を取付るとともにこれに歯
合する内歯車状のロータギヤ８をロータ４に取付け、ロ
ータギヤ８と固定ギヤとの歯数比を３：２に設定して構
成している。Reference numeral 1 denotes a rotor housing. Three working chambers 3 are defined in a space consisting of the rotor housing 1 and at least two side housings 2, and a substantially triangular rotor 4 is disposed therein. A fixed gear 7 in the form of an external gear is attached to one side housing 2, and a rotor gear 8 in the form of an internal gear that meshes with the fixed gear 7 is attached to the rotor 4. The ratio of the number of teeth between the gear and the fixed gear is set at 3:2.
１０は排気ポートであって、この場合をロータハウジン
グ１の図中上下位置に一個ずつ計二個形成し、かつロー
タハウジング１に作動室３に臨む点火プラグ１１を図中
左右両側に二個ずつ並べて計４個取付けて構成している
。Reference numeral 10 denotes an exhaust port, and in this case, two exhaust ports are formed in the rotor housing 1, one at the top and bottom in the figure, and spark plugs 11 facing the working chamber 3 are provided in the rotor housing 1, two on the left and right sides in the figure. It consists of a total of four installed side by side.
９は吸気ポートであって、この場合サイドハウジング２
の図中左右両側に形成され、上記作動室３に連通して吸
気ポート９に連通可能な連通路１２をロータ４に三個形
成して構成している。9 is an intake port, in this case side housing 2
The rotor 4 is configured with three communication passages 12 formed on both the left and right sides in the figure, communicating with the working chamber 3 and communicating with the intake port 9.
１３は過給機構であって、この場合内部にブロアを備え
ており、上記吸気ポート９に連なってブロアによって強
制的に給気を行うものである。Reference numeral 13 denotes a supercharging mechanism, which in this case is equipped with a blower therein, and is connected to the intake port 9 and forcibly supplies air with the blower.
この実施例は上記構成であるから、第１図の状態では左
側の点火プラグ１１が点火、して作動室３ａは燃焼行程
となっており、燃焼ガスはロータ４の外周面に圧力を及
ぼしつつ膨張を始め、作動室３ａの容積は増加して行き
、かつ作動室３ｂでは上側の排気ポート１０からの排気
終わり行程、作動室３ｃでは下側の排気ポートからの排
気始め行程となっており、第１図から第２図の如くロー
タ４が時計回りに回転すると作動室３ａでは排気行程、
作動室３ｂは右側の点火プラグ１１による燃焼行程、作
動室３ｃでは連通路１２が左側の吸気ポート９に合致し
て吸気行程となっており、次いで第３図まで回転すると
作動室３ａでは連通路１２が右側の吸気ポート９に合致
して吸気行程となっており、作動室３ｂでは下側の排気
ポート１０による排気行程、作動室３Ｃでは左側の点火
プラグ１１によって燃焼行程となっており、次いで第４
図へと更にロータ４が回動すると圧縮行程を経て作動室
３ａでは右側の点火１ラグ１１が点火して燃焼行程とな
っており、かつ作動室３ｂでは下側の排気ポート１０に
よる排気行程、作動室３Ｃでは上側の排気ポート１０に
よる排気行程となっており、次いで第５図では作動室３
ａは下側の排気ポート１０に連通して排気行程、作動室
３ｂでは左側の点火プラグ１１によって燃焼行程、作動
室３ｃでは連通路１２が右側の吸気ポート９に連通して
吸気行程となっており、次いで第６図の状態では作動室
３ａは連通路１２が左側の吸気ポート９に合致して吸気
行程となっており、かつ作動室３ｂでは上側の排気ポー
ト１０に連通して排気行程、作動室３Ｃは右側の点火プ
ラグ１１によって燃焼行程となっており、この後、作動
室３ａでは圧縮行程を経て再び第１図の状態となり、ロ
ータ４は一回転することになる。Since this embodiment has the above-mentioned configuration, in the state shown in FIG. As it begins to expand, the volume of the working chamber 3a increases, and the working chamber 3b is in the final stroke of exhausting from the upper exhaust port 10, and the working chamber 3c is in the beginning stroke of exhausting from the lower exhaust port, As the rotor 4 rotates clockwise as shown in FIGS. 1 and 2, the exhaust stroke occurs in the working chamber 3a.
In the working chamber 3b, the combustion stroke is performed by the ignition plug 11 on the right side, and in the working chamber 3c, the communication passage 12 matches the intake port 9 on the left side, making it an intake stroke.When the engine rotates to FIG. 12 coincides with the intake port 9 on the right side to form an intake stroke, in the working chamber 3b, the exhaust stroke is performed by the lower exhaust port 10, and in the working chamber 3C, the combustion stroke is performed by the left spark plug 11, and then Fourth
As the rotor 4 further rotates as shown in the figure, it undergoes a compression stroke, and in the working chamber 3a, the right ignition lug 11 ignites, resulting in a combustion stroke, and in the working chamber 3b, an exhaust stroke by the lower exhaust port 10, In the working chamber 3C, the exhaust stroke is performed by the upper exhaust port 10, and then in FIG.
a communicates with the lower exhaust port 10 for the exhaust stroke, in the working chamber 3b the left spark plug 11 causes the combustion stroke, and in the working chamber 3c the communicating passage 12 communicates with the right intake port 9 for the intake stroke. Then, in the state shown in FIG. 6, the communication passage 12 of the working chamber 3a matches the left intake port 9 for the intake stroke, and the working chamber 3b communicates with the upper exhaust port 10 for the exhaust stroke. The working chamber 3C undergoes a combustion stroke due to the right-hand spark plug 11, and after this, the working chamber 3a undergoes a compression stroke and returns to the state shown in FIG. 1, and the rotor 4 rotates once.
このようにロータ４の一回転で偏心軸６が三回転する間
に吸入、圧縮、燃焼、排気、吸入、圧縮、燃焼、排気の
へ行程がそれぞれ三つの作動室３ａ・３ｂ・３Ｃでなさ
れ、このためロータ４の一回転につき燃焼は六回行われ
、このことから偏心軸６の一回転当たり二回の燃焼爆発
がなされていることになり、このため高出力にして低振
動なロータリーエンジンとなる。In this way, while the eccentric shaft 6 rotates three times for one rotation of the rotor 4, the suction, compression, combustion, exhaust, suction, compression, combustion, and exhaust strokes are performed in the three working chambers 3a, 3b, and 3C, respectively. For this reason, combustion occurs six times per revolution of the rotor 4, which means that combustion explosions occur twice per revolution of the eccentric shaft 6. This results in a rotary engine with high output and low vibration. Become.
尚、本発明は上記実施例に限られるものではなく１例え
ば２０−夕、３０−夕等の複数気筒型ロータリーエンジ
ンにも適用でき、この場合上記サイドハウジングの一方
がインターミゾイエイトハウジングとなり、よって上記
サイドハウジングとはこれを含む総称として用いている
。It should be noted that the present invention is not limited to the above-mentioned embodiments, but can also be applied to multi-cylinder rotary engines such as 20-unit, 30-unit, etc. In this case, one of the side housings is an intermittent housing, Therefore, the above-mentioned side housing is used as a generic term that includes this.
また点火プラグ１１はこの場合火炎伝播を考慮して二個
ずつ配置しているが一個または三個等の複数個であって
もよいものであり、その他適宜構造に変更して設計され
るものである。Further, in this case, the spark plugs 11 are arranged in pairs in consideration of flame propagation, but it is also possible to have a plurality of spark plugs, such as one or three, or the structure may be changed as appropriate. be.
［発明の効果］
本発明は上述の如く、ロータの一回転で偏心軸が三回転
する間に吸入、圧縮、燃焼、排気の四行程がそれぞれ三
つの作動室で二回ずつなされ、このためロータの一回転
につき燃焼は六回行われ、このことから偏心軸の一回転
当たり二回の燃焼爆発がなされていることになり、この
ため高出力にして低振動なロータリーエンジンとなり、
その効果は顕著である。[Effects of the Invention] As described above, in the present invention, the four strokes of suction, compression, combustion, and exhaust are performed twice in each of the three working chambers while the eccentric shaft rotates three times for one rotation of the rotor. Combustion takes place six times per revolution, which means that there are two combustion explosions per revolution of the eccentric shaft, resulting in a rotary engine with high output and low vibration.
The effect is remarkable.
以上の如く、所期の目的を充分達成することができる。As described above, the intended purpose can be fully achieved.
図面は本発明の一実施例を示すもので、第１図乃至第６
図は作勤行程図、第７図はその部分断面図、第８図乃至
第１１図は従来構造の作勤行程図である。
１・・・ロータハウジング、２・・・サイドハウジング
、３・・・作動室、４・・・ロータ、５・・・偏心部、
６・・・偏心軸、７・・・固定ギヤ、８・・・ロータギ
ヤ、９・・・吸気ボ−ト、
１０・・・排気ポート、
１・・・点火プラグ、
２・・・連通路。
平成
２年１０月
６日
出
願
人
相
羽
周
平The drawings show one embodiment of the present invention, and are shown in FIGS. 1 to 6.
The figure is a working process diagram, FIG. 7 is a partial sectional view thereof, and FIGS. 8 to 11 are working process diagrams of a conventional structure. DESCRIPTION OF SYMBOLS 1... Rotor housing, 2... Side housing, 3... Working chamber, 4... Rotor, 5... Eccentric part,
6... Eccentric shaft, 7... Fixed gear, 8... Rotor gear, 9... Intake boat, 10... Exhaust port, 1... Spark plug, 2... Communication path. October 6, 1990 Applicant Shuhei Aiba
Claims (1)
三つの作動室を画成して配置される略三角形状のロータ
と、該ロータを支える偏心部を有する偏心軸と、固定ギ
ヤ及びこれに歯合するロータギヤと、該作動室に連なる
吸気ポート及び排気ポートと、該作動室に臨む点火プラ
グとを備え、上記点火プラグ及び上記排気ポートを対向
する二位置に配置し、上記サイドハウジングに上記吸気
ポートを対向する二位置に形成し、かつ上記ロータに該
排気ポートと作動室とを連通可能な三つの連通路を形成
して構成したことを特徴とするロータリーエンジン。A substantially triangular rotor arranged to define three working chambers in a space consisting of a rotor housing and a side housing, an eccentric shaft having an eccentric portion that supports the rotor, a fixed gear, and a rotor gear that meshes with the rotor. , comprising an intake port and an exhaust port connected to the working chamber, and a spark plug facing the working chamber, the spark plug and the exhaust port being arranged at two opposing positions, and the intake port facing the side housing. A rotary engine characterized in that three communicating passages are formed in two positions and in the rotor, the exhaust port and the working chamber can communicate with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2268685A JP2920563B2 (en) | 1990-10-06 | 1990-10-06 | Rotary engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2268685A JP2920563B2 (en) | 1990-10-06 | 1990-10-06 | Rotary engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04148033A true JPH04148033A (en) | 1992-05-21 |
| JP2920563B2 JP2920563B2 (en) | 1999-07-19 |
Family
ID=17461971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2268685A Expired - Lifetime JP2920563B2 (en) | 1990-10-06 | 1990-10-06 | Rotary engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2920563B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018203498A1 (en) * | 2017-05-03 | 2018-11-08 | 東洋治 向山 | Implosion-type engine |
| CN112761731A (en) * | 2021-01-27 | 2021-05-07 | 贵州航天天马机电科技有限公司 | Triangular rotor pneumatic generator for pressure reduction of high-pressure natural gas wellhead |
-
1990
- 1990-10-06 JP JP2268685A patent/JP2920563B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018203498A1 (en) * | 2017-05-03 | 2018-11-08 | 東洋治 向山 | Implosion-type engine |
| CN112761731A (en) * | 2021-01-27 | 2021-05-07 | 贵州航天天马机电科技有限公司 | Triangular rotor pneumatic generator for pressure reduction of high-pressure natural gas wellhead |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2920563B2 (en) | 1999-07-19 |
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