JPS5963345A - Internal-combustion stering engine - Google Patents
Internal-combustion stering engineInfo
- Publication number
- JPS5963345A JPS5963345A JP17425082A JP17425082A JPS5963345A JP S5963345 A JPS5963345 A JP S5963345A JP 17425082 A JP17425082 A JP 17425082A JP 17425082 A JP17425082 A JP 17425082A JP S5963345 A JPS5963345 A JP S5963345A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- dead center
- combustion
- heat exchanger
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 43
- 230000001172 regenerating effect Effects 0.000 claims description 26
- 239000000446 fuel Substances 0.000 abstract description 10
- 239000000567 combustion gas Substances 0.000 abstract description 9
- 238000005338 heat storage Methods 0.000 abstract description 7
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/053—Component parts or details
- F02G1/057—Regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2270/00—Constructional features
- F02G2270/85—Crankshafts
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】 本発明は内燃スターリング機関に閂するちのζある。[Detailed description of the invention] The present invention is applicable to internal combustion Stirling engines.
内燃スターりング１ず１間は蓄熱体が燃焼前に吸気を熱
再生し、燃焼ｉ所（二燃焼カスの熱を蓄熱体に蓄える円
生四閂である。従来の例えば特開昭５７−２８８４８月
公報などに示されるスターリング間開では、燃焼ガスの
熱を再生するためにピストンと燃焼室との間に蓄熱体と
してのディスプレーリを配置しているが、これを駆動す
るＩ８１構が？！雄で機械損失が避１）られないため、
高い効率を１ｑることができない嬬いがｄ５る。The internal combustion engine is a four-barrel system in which the heat storage body regenerates the heat of the intake air before combustion, and the heat of the combustion residue is stored in the heat storage body. In the Stirling spacing shown in the August 2884 bulletin, etc., a disprayer as a heat storage body is placed between the piston and the combustion chamber in order to regenerate the heat of the combustion gas, but what about the I81 structure that drives this? !Because mechanical loss is unavoidable in males,
There is a d5 inability to achieve 1q of high efficiency.
これに対して、特開昭５６−５２５４７Ｑ公報などにお
いて、シリンダ本体の周壁部に蓄熱体を配置し、かつデ
ィスプレーｔｆを（）を用するものもあるが、従来のも
のは吸気の充填効率が低く、かつ良い燃焼が１９られす
、十分な熱効率を１りることができなかった。充填効率
が低い主な理由は、ディスプレーりを用いるため吸気行
程の前半“Ｃシリンタｆ＼入った吸気が、吸気行程の１
す」′で再生されて熱膨張し、続く吸気をＩＪｊ′Ｊ害
していることによる。On the other hand, in Japanese Patent Application Laid-open No. 56-52547Q, etc., there is a system in which a heat storage body is arranged on the peripheral wall of the cylinder body and the display tf is displayed in parentheses, but the conventional system has a low intake air filling efficiency. Although low and good combustion was achieved, sufficient thermal efficiency could not be achieved. The main reason for the low charging efficiency is that because the display is used, the intake air entering the C cylinder f\ during the first half of the intake stroke is
This is because the air is regenerated and thermally expands, damaging the subsequent intake air.
本発明の目的は、ディスプレー（）を１駆動するための
４ｉ１械損失をなく丈とともに、燃焼ガスの熱を有効に
蓄積し、再生するようにした内燃スターリング機関を提
供づることにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an internal combustion Stirling engine that eliminates 4i1 mechanical loss for driving a display (1), and that effectively stores and regenerates the heat of combustion gas.
このｉ４ ｉＪ）、本発明の椙成はシリンクｌ＼ツド【
ご燃焼室を形成し、シリンダ本体と前記シリング“ｌ＼
ツ１〜との間に蓄熱式熱交１角器のフランジ部をｊ宍ん
て結合し、前記蓄熱式熱交換器は前記シリンタｌ＼ツド
の燃焼室の内部に配置され、かつ前記燃焼室と前記シリ
ツタ本体の内部とを連通ずる？！ｉｉ数周の通路を備え
たものであり、これによっ゛Ｃビス１−ンの上死点前で
燃す８１が噴射されるまでに吸気が蓄熱式熱交換器を通
過して十分加熱され、熱効率を向上させることができる
。This i4 iJ), the composition of the present invention is Sylink l\tsud [
The combustion chamber is formed by the cylinder body and the cylinder "l\
A flange portion of a regenerative heat exchanger 1 is connected between the cylinders 1 and 1, and the regenerative heat exchanger is disposed inside the combustion chamber of the cylinder 1 and the combustion chamber and communicate with the inside of the shiritsuter body? ! ii) It is equipped with several passages, so that the intake air passes through the regenerative heat exchanger and is sufficiently heated before the combustion engine 81 is injected before the top dead center of the cylinder. Thermal efficiency can be improved.
本発明を実施例に基づい−Ｃ説明すると、第１図に示す
よう゛に、内燃スターリング店開はシリツタ本体２の上
部に、シリンダ本体２の内部を閉鎖するシリンタｌ＼ツ
ド８が結合され、シリンダ本体２の内部にピストン゛１
７を気密かっ摺動可能に嵌装してシリンダヘッド８の内
側に燃焼室９を形成する。To explain the present invention based on an embodiment, as shown in FIG. A piston 1 is installed inside the cylinder body 2.
7 is hermetically and slidably fitted to form a combustion chamber 9 inside the cylinder head 8.
シリンダ本体２の下端部にはクランクケースが結合され
、これに回転可能に支持したクランク軸２１にクランク
アーム２０が一体に結合され、この先端にビン１９をも
ってコネクティングロッド１８の基端部が連結される。A crankcase is connected to the lower end of the cylinder body 2, and a crank arm 20 is integrally connected to a crankshaft 21 rotatably supported by the crankcase, and the base end of a connecting rod 18 is connected to the tip of the crankcase with a pin 19. Ru.
コネクティングロッド１８め先端部はビス１−ン１７に
ビン１６をちって連結される。シリンダヘッド８に燃料
噴射ノズル７が支持されるとともに、始動を容易にづる
グロープラグ６が配設される。このような構成は従来の
一般的な内燃機関とほぼ同様である。The tip end of the connecting rod 18 is connected to the screw 17 through the pin 16. A fuel injection nozzle 7 is supported by the cylinder head 8, and a glow plug 6 is provided to facilitate starting. Such a configuration is almost similar to a conventional general internal combustion engine.
本発明によれば、ノリツタ・１（休２の上端部に吸気ボ
ー１−４が設けられ、吸気弁３によって開閉されるよう
になっている。同様に、排気弁′１４によつで開閉され
る排気ボー１〜１３が設けられる。ぞし−（、シリツタ
本体２の上端壁に蓄熱式熱交換器１５のフランジ部″１
５ａが重ね合され、がっカスケラ１〜１Ｑをヂｔし’、
Ｕシリングヘッド８とともにシリツタ本体２（ご結合さ
れる。According to the present invention, an intake bow 1-4 is provided at the upper end of the Noritsuta 1 (rest 2) and is opened and closed by the intake valve 3.Similarly, the exhaust valve '14 is opened and closed by the exhaust valve '14. Exhaust bows 1 to 13 are provided on the upper end wall of the cylinder main body 2 and the flange portion ``1'' of the regenerative heat exchanger 15 is provided.
5a are superimposed, and Gakka Skela 1 to 1Q are combined.
The sillage head 8 and the sillage head 8 are combined together.
蓄熱式熱交換器１５は燃焼±９の内部に配設されるもの
（°、ビス１−ン゛１７の上死点においてピストン１７
に最接近するようＩＪ促回置６る。そしＣ１熱容貧の人
さな金属から構成され、燃焼室９とシリンダ本体２の内
部とを連通ずる多数の通路５が設けられる。しかし、第
２図に示ｊように、例えばセラミックスなどの耐熱材料
をもってフランジ１５ａと一体的にシース２３を構成し
、この上下端壁に多数の通路５を設Ｕかっ内部に金属ボ
ールなどの蓄熱体２２を収容するようにしてもよい。The regenerative heat exchanger 15 is disposed inside the combustion chamber (°, when the piston 17 is at the top dead center of the screw 1-17).
IJ is urged to move as close as possible to 6. The cylinder C1 is made of a thin metal with low thermal capacity, and is provided with a large number of passages 5 that communicate the combustion chamber 9 with the inside of the cylinder body 2. However, as shown in FIG. 2, a sheath 23 is formed integrally with the flange 15a using a heat-resistant material such as ceramics, and a large number of passages 5 are provided in the upper and lower end walls of the sheath 23. The body 22 may be housed therein.
本発明は上述のように構成することによって、ビス）・
ン頭部の断面積の２．１（８以上の表面積をもつ蓄熱式
熱交換器をシリンダヘッド部に設け、これによって吸気
に対して再生するものである。By configuring the present invention as described above,
A regenerative heat exchanger with a surface area of 2.1 (8 or more) of the cross-sectional area of the cylinder head is installed in the cylinder head, thereby regenerating the intake air.
また、蓄熱式熱交換器の上側の燃焼室の容積が、ビス１
〜ンか上死点にある時の蓄熱式熱交８器との間の体積に
比べ、３．５器以上となるように、蓄熱式熱交換器が配
置される。In addition, the volume of the upper combustion chamber of the regenerative heat exchanger is
The regenerative heat exchanger is arranged so that the volume between the regenerative heat exchanger and the eight regenerative heat exchangers is 3.5 or more when the engine is at top dead center.
第１図にホラのは４サイクル機関であり、ビス１〜ン１
７が図示の上死点から下降づるとき、吸気弁３が開いて
新鮮空気がシリンダ本体２の内部へ吸い込まれる。ビス
１−ン１７の下死点付近で吸気弁３が閉じられ、ピスト
ン１７の上行に伴つ−Ｃシリンダ本体２の内部の空気は
蓄熱式熱交換器１５０通路５を経て燃焼室９へ送り込Ｊ
、れる。吸気が蓄熱体１５を通過する内に熱再生される
。そして、ピストン１７が上死点で蓄熱式熱交換器１５
に最接近づるのて、吸気の殆どが高温とされて燃焼室９
へ押し込まれる。The one shown in Figure 1 is a 4-cycle engine, with screws 1 to 1.
7 descends from the top dead center shown, the intake valve 3 opens and fresh air is sucked into the cylinder body 2. The intake valve 3 is closed near the bottom dead center of the screw 1-17, and as the piston 17 moves upward, the air inside the C cylinder body 2 is sent to the combustion chamber 9 via the regenerative heat exchanger 150 passage 5. Including J
, will be. Heat is regenerated while the intake air passes through the heat storage body 15. Then, the piston 17 is at the top dead center of the regenerative heat exchanger 15.
Most of the intake air is at high temperature and flows into the combustion chamber 9.
pushed into.
ビス１−ン１７の上死点前で燃料噴射ノズル７から燃料
が噴射され、燃焼・膨張行程に入る。燃焼室９の燃焼カ
スは蓄熱式熱交換器１５の通路５を通ってシリンダ本体
２の内部へ入る。この際に燃焼ガスは蓄熱式熱交換器１
５に熱を蓄えながらビスＩ−ン１７を押し下げる。この
ビス１−ン′１７の下降運動はクランクアーム２０を介
してクランク軸２１に回転力を与える。Fuel is injected from the fuel injection nozzle 7 before the top dead center of the engine 17, and the combustion/expansion stroke begins. The combustion residue in the combustion chamber 9 enters the inside of the cylinder body 2 through the passage 5 of the regenerative heat exchanger 15. At this time, the combustion gas is transferred to the regenerative heat exchanger 1.
While accumulating heat in 5, press screw I-17 down. This downward movement of the screw 1-'17 applies rotational force to the crankshaft 21 via the crank arm 20.
ピストン１７が下死点に至ったところで排気弁１４が開
き、ピストン１７の上昇に伴って燃焼ガスが排気ボー１
〜１３から外部へ排出される。When the piston 17 reaches the bottom dead center, the exhaust valve 14 opens, and as the piston 17 rises, combustion gas flows into the exhaust bow 1.
~13 is discharged to the outside.
ヒスＩ・ン１７が上死点に至ったところで排気弁１４が
閉じ、かつ吸気弁３が聞ぎ、吸気行程が始まり、以下前
述と同様の行程を繰り返す。When the histogram 17 reaches the top dead center, the exhaust valve 14 closes and the intake valve 3 is turned on, the intake stroke begins, and the same stroke as described above is repeated.
本発明によれば、燃焼ガスの熱を蓄熱する蓄熱式熱交換
器１５が燃焼室９の内部に臨むように、シリンダヘッド
とシリツタ本体との間に介駅されているので、その取付
（づが簡単である、またピストン１７が上死点で蓄熱式
熱交換器１５に最接近するので吸気の殆どが燃焼室９へ
送り込まれる。According to the present invention, since the regenerative heat exchanger 15 for storing heat of combustion gas is interposed between the cylinder head and the cylinder body so as to face the inside of the combustion chamber 9, its installation ( is simple, and since the piston 17 is closest to the regenerative heat exchanger 15 at the top dead center, most of the intake air is sent into the combustion chamber 9.
ぞして、燃料噴射ノズルから燃１’ｌが噴射されるまて
の間に蓄熱式熱交換器１５て十分に熱再生されるので、
熱効率を向上させることができる。Therefore, sufficient heat is regenerated in the regenerative heat exchanger 15 until 1'l of fuel is injected from the fuel injection nozzle.
Thermal efficiency can be improved.
燃焼室９におＬＪる燃焼ガスはその殆どが蓄熱式熱交換
器１５を通過し、同峙にビス１〜ン゛１７に圧力を及ぼ
１ので、燃焼ガスの熱を有効に利用づることがてき、Ｐ
ｉ Ｉｌ＋としての正味熱効率を大幅に向上することが
できる、
上死点で燃焼期間の中心を迎えることができる。Most of the combustion gas in LJ in the combustion chamber 9 passes through the regenerative heat exchanger 15, which applies pressure to the screws 1 to 17 at the same time, so that the heat of the combustion gas can be used effectively. Come on, P
It is possible to reach the center of the combustion period at top dead center, which can significantly improve the net thermal efficiency as i Il+.
すなわち、上死点前１０６ｆＪ近までは燃焼室に多嬶の
吸気は必要でなく、燃焼の最盛期を迎える上死点で蓄熱
式熱交換器はビス！−ンに接するぐらいの位置にある。In other words, there is no need for much intake air into the combustion chamber until approximately 106 fJ before top dead center, and at top dead center, when combustion is at its peak, the regenerative heat exchanger is activated. - It is located at a position that is almost touching the ring.
すなわち、全ての吸気が再生後に燃焼に使用される。That is, all intake air is used for combustion after regeneration.
本発明ではディスプレーりを用いないので、普通の内燃
機関と同様の充填効率を得ることができ、従来の内燃ス
ターリング機関に比べて圧縮比を大幅に高めることがで
きる。すなわら、ディスプレーサを用いたものに比べて
デッドスペースが小さいため、圧縮比を高くし、掃気効
率を高めることができる。Since the present invention does not use a display, it is possible to obtain charging efficiency similar to that of an ordinary internal combustion engine, and the compression ratio can be significantly increased compared to a conventional internal combustion Stirling engine. In other words, since the dead space is smaller than that using a displacer, the compression ratio can be increased and the scavenging efficiency can be increased.
また、吸気行稈で最初の空気が後続する吸気の邪麿をし
ないので充填効率が高くなり、燃焼空ｌ＼噴射された燃
料を完全に燃焼させることができ、従来と同様の燃ｔｅ
ｌ消′Ｐ！率でも蓄熱式熱交換器ににる熱再生によって
熱効率を向上させることができる。In addition, since the first air in the intake culm does not interfere with the following intake air, the charging efficiency is increased, and the combustion air can completely burn the injected fuel, making it possible to achieve the same combustion efficiency as before.
l extinguish 'P! Even at low heat exchange rates, thermal efficiency can be improved by regenerating heat in a regenerative heat exchanger.
なお、燃焼室の形状は上述の実施例に限定されるもので
なくどのような形状でもよい。また、使用する燃料とし
′Ｃは種々のガスまたは液体群１′１１を用いることが
できる。Note that the shape of the combustion chamber is not limited to the above-mentioned embodiments, and may have any shape. Moreover, various gases or liquids 1'11 can be used as the fuel 'C'.
第３図は２ザイクル機関の例を示すもので、吸気ボー１
〜４および排気ボート１３がビス１〜ン゛１７の下死点
付近に配設され、カｆましくは過給機３０によって新鮮
空気がシリンダ本体２の内部へ供給される。図示の実施
例では、過給機３０は駆動軸３１によって回転される楕
円形のロータ３２が円筒状のハウジング３３の内部に収
容され、取入口３４から吸気ボー１〜４へ新鮮空気を送
り込むように構成される。Figure 3 shows an example of a two-cycle engine, where the intake bow is
-4 and an exhaust boat 13 are arranged near the bottom dead center of the screws 1-17, and fresh air is supplied into the cylinder body 2, preferably by a supercharger 30. In the illustrated embodiment, the supercharger 30 has an elliptical rotor 32 rotated by a drive shaft 31 housed inside a cylindrical housing 33 and configured to feed fresh air from an intake port 34 to the intake bows 1-4. It is composed of
第１図は本発明に係る内燃スターリング別間の正面断面
図、第２図は同機閘に用いらｉする蓄熱式熱交換器につ
いての正面断面図、第３図は２４ノイクルＩ幾関の場合
の正面断面図である。
２ニジリンダ本体 ３：吸気弁 ４：吸気ボー１−５：
通路 ７：燃料噴剖ノズル ８ニジリンダｌ＼ツド ９
：燃焼室 １３：排気ポー＋−’＋４二排気弁 １５：
蓄熱式熱交換器 １７：ビス１〜ン２１：クランク軸
２２：蓄熱体
特許出願人 デーピル数器株式会社
代理人 弁理士 山本俊夫Figure 1 is a front cross-sectional view of an internal combustion Stirling engine according to the present invention, Figure 2 is a front cross-sectional view of a regenerative heat exchanger used in the same lock, and Figure 3 is a case of a 24 Neukle I engine. FIG. 2 Niji cylinder body 3: Intake valve 4: Intake bow 1-5:
Passage 7: Fuel injection nozzle 8
: Combustion chamber 13: Exhaust port +-'+4 2nd exhaust valve 15:
Regenerative heat exchanger 17: Screws 1 to 21: Crankshaft
22: Heat storage body patent applicant: Representative of Dapil Kakki Co., Ltd. Patent attorney: Toshio Yamamoto
Claims (1)
シリングヘッドとの間に蓄熱式熱交換器のフランジ部を
挾んで結合し、前記蓄熱式熱交換器は前記シリングヘッ
トの燃焼室の内部に配置され、かつ前記燃焼室と前記シ
リング本体の内部とを連通する？！数個の通路を備えて
いることを特徴とづる内燃スターリング内凹７A combustion chamber is formed in the shilling head, a flange portion of a regenerative heat exchanger is sandwiched and coupled between the shilling main body and the shilling head, and the regenerative heat exchanger is disposed inside the combustion chamber of the shilling head. and communicates the combustion chamber with the inside of the shilling body? ! Internal combustion Stirling inner recess 7 characterized by having several passages
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17425082A JPS5963345A (en) | 1982-10-04 | 1982-10-04 | Internal-combustion stering engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17425082A JPS5963345A (en) | 1982-10-04 | 1982-10-04 | Internal-combustion stering engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5963345A true JPS5963345A (en) | 1984-04-11 |
Family
ID=15975338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17425082A Pending JPS5963345A (en) | 1982-10-04 | 1982-10-04 | Internal-combustion stering engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5963345A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19904269A1 (en) * | 1999-02-03 | 2000-11-09 | Michael Ruppel | Heat engine has a simplified design with combined piston and valve and with alternate sides of the piston vented in either limits of the piston movement |
| GR20010100412A (en) * | 2001-08-31 | 2003-04-24 | Κυριακος Δημητριου Παπαηλιου | Closed cycle regenerator |
| CN105370435A (en) * | 2014-08-29 | 2016-03-02 | 田家铭 | External combustion engine of bundling pipe |
-
1982
- 1982-10-04 JP JP17425082A patent/JPS5963345A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19904269A1 (en) * | 1999-02-03 | 2000-11-09 | Michael Ruppel | Heat engine has a simplified design with combined piston and valve and with alternate sides of the piston vented in either limits of the piston movement |
| DE19904269C2 (en) * | 1999-02-03 | 2001-07-05 | Michael Ruppel | Hot air engine |
| GR20010100412A (en) * | 2001-08-31 | 2003-04-24 | Κυριακος Δημητριου Παπαηλιου | Closed cycle regenerator |
| CN105370435A (en) * | 2014-08-29 | 2016-03-02 | 田家铭 | External combustion engine of bundling pipe |
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