JPS63167031A - Internal combustion engine - Google Patents
Internal combustion engineInfo
- Publication number
- JPS63167031A JPS63167031A JP31482386A JP31482386A JPS63167031A JP S63167031 A JPS63167031 A JP S63167031A JP 31482386 A JP31482386 A JP 31482386A JP 31482386 A JP31482386 A JP 31482386A JP S63167031 A JPS63167031 A JP S63167031A
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- combustion engine
- annular
- rotating body
- disc
- 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 15
- 238000005096 rolling process Methods 0.000 claims abstract description 19
- 239000000446 fuel Substances 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
- F02B75/246—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type with only one crankshaft of the "pancake" type, e.g. pairs of connecting rods attached to common crankshaft bearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
- F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
- F01B9/026—Rigid connections between piston and rod; Oscillating pistons
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は水平対向するピストンを一体往復動するように
した内燃機関に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an internal combustion engine in which horizontally opposed pistons integrally reciprocate.
（従来の技術）
水平対向型コネクティングロッドレスの内燃機関であっ
て、内Ｎ４ｍ巾と転動歯車とを用いる形式の内燃機関と
して、特開昭４９−６３８０６号公報に開示されたもの
は内歯歯巾と、この内歯歯車に対して２分の１径を有す
るビニオンギＡ７の噛合内転と直線運動とによって、前
記ピニオンギヤのピッチ円上の定点位置に設けたシャフ
トが回転するようにした変換伝動装置と、前記内歯歯車
と同径の嵌合孔に嵌装した案内体を設け、この案内体の
２分の１半径の位置で前記ピニオンギヤの軸杆が挿通し
ている補助装置とをＷｌ動自在に内装してなるものであ
る。(Prior Art) A horizontally opposed connecting rodless internal combustion engine that uses an internal width of N4m and a rolling gear is disclosed in Japanese Patent Application Laid-Open No. 49-63806. A transformation in which a shaft provided at a fixed point position on the pitch circle of the pinion gear is rotated by the meshing internal rotation and linear motion of the pinion gear A7, which has a diameter of 1/2 with respect to the tooth width and this internal gear. A transmission device, and an auxiliary device including a guide body fitted into a fitting hole having the same diameter as the internal gear, and a shaft rod of the pinion gear inserted through the guide body at a position of a half radius of the guide body. Wl is designed so that it can be moved freely.
（ｊ１！明が解決しようとする問題点）変換伝動装置と
補助装置とをシリンダ内に店動自在としたので摺動抵抗
が大となり、冷却機構を複雑とし、しかも燃料消費量が
大であって、高出力を有する内燃機関となし侍ないとい
う問題点があった。(Problems that J1! Ming is trying to solve) Since the conversion transmission device and the auxiliary device were made to be movable within the cylinder, the sliding resistance was large, the cooling mechanism was complicated, and the fuel consumption was large. However, there was a problem in that it was incompatible with internal combustion engines that had high output.
（問題点を解決するための手段）
本発明は高出力が得られ、燃費も良く、機関の気密性と
放熱性に優れる内燃機関を提供するものであって、筐体
の両側にシリンダブロックを固設し、このシリンダブロ
ックの内部に形成したシリンダ室内にそれぞれ訳装した
ピストンを対側に取付ける環状作動体を設け、回転体の
円盤状部を前記環状作動体内に回動自在に取付けるとと
もに回転体の転動歯車部を筐体に固設した環状内ｔＩ！
ｒｉに転動自在とし、前記回転体の取付軸、この取付軸
の両端に達成した円板部、この円板部の中心に連設した
出力軸を設けてなることを特撮とした内燃機関である。(Means for Solving the Problems) The present invention provides an internal combustion engine that provides high output, good fuel efficiency, and excellent engine airtightness and heat dissipation. An annular actuating body is fixedly installed in the cylinder chamber formed inside the cylinder block, and a piston mounted on the opposite side is attached to the cylinder chamber. An annular inner tI with the rolling gear part of the body fixed to the casing!
An internal combustion engine that is specially designed to be able to roll freely on the ri, and is equipped with a mounting shaft of the rotating body, a disc part formed at both ends of this mounting shaft, and an output shaft connected to the center of this disc part. be.
（作用）
シリンダ室の吸入、圧縮、ｍ＊、排気行程によってピス
トンを経て、環状作動体を直線往復動させ、回転体を環
状内歯車と噛合う転ｖＪ歯車部を介して自転、公転させ
、取付軸、円板体からなり、クランク状部材を回転させ
、出力軸が回転する。(Function) The annular actuating body is linearly reciprocated through the piston through the suction, compression, m*, and exhaust strokes of the cylinder chamber, and the rotating body is rotated and revolved via the rotational VJ gear part that meshes with the annular internal gear. It consists of a mounting shaft and a disc body, and the output shaft rotates by rotating a crank-shaped member.
（実施例） 本発明内燃機関の実施例を図面について説明する。(Example) Embodiments of the internal combustion engine of the present invention will be described with reference to the drawings.
内燃機関１は第１図乃至第４図に示すように、筐体２０
両側にシリンダブロック３，４を固定してあり、これら
シリンダブロック３，４の内部にシリンダ室５ａ、５ｂ
、６ａ、６ｂを形成し、これらシリンダ室５ａ、５ｂ、
６ａ、６ｂに、それぞれピストンリング７．７．７・・
・を装着し周動自在に嵌装してピストン８，９．１０゜
１１を設け、筐体２の両側に対向してピストン８．９、
ピストン１０．１１を配設しである。As shown in FIGS. 1 to 4, the internal combustion engine 1 has a housing 20.
Cylinder blocks 3 and 4 are fixed on both sides, and cylinder chambers 5a and 5b are provided inside these cylinder blocks 3 and 4.
, 6a, 6b, and these cylinder chambers 5a, 5b,
Piston rings 7.7.7 to 6a and 6b, respectively.
The pistons 8, 9, and 10° 11 are installed by attaching the pistons 8, 9, and 10° 11 so that they can rotate freely, and the pistons 8, 9, and 10 are mounted on opposite sides of the housing 2.
A piston 10.11 is provided.
次いで、転動歯車部１２ａを有する回転体１２の円盤状
部１２ｂ外周に軸受１３を介して取付けた環状作動体１
４の外周鍔部１４ａを前記ピストン８，９のロッド部９
ａ 、９ａに嵌挿固定し、かつ回転体１２は軸受１５を
介し取付軸１６の回りに回転自在としである。Next, the annular operating body 1 is attached via a bearing 13 to the outer periphery of the disc-shaped portion 12b of the rotating body 12 having the rolling gear portion 12a.
The outer periphery flange 14a of 4 is attached to the rod part 9 of the piston 8, 9
a, 9a, and the rotating body 12 is rotatable around a mounting shaft 16 via a bearing 15.
同様にして、転動歯車部１７ａを有する回転体１７の円
盤状部１７ｂ外周に軸受１８を介して取付けた環状作動
体１９の外周鍔部１９ａを前記ピストン１０．１１のロ
ッド部１０ａ。Similarly, an outer periphery flange 19a of an annular operating body 19 attached via a bearing 18 to the outer periphery of a disc-shaped portion 17b of a rotating body 17 having a rolling gear portion 17a is attached to the rod portion 10a of the piston 10.11.
１１ａに嵌挿固定し、かつ回転体１７は軸受２０を介し
取付軸２１の回りに回転自在としである。11a, and the rotating body 17 is rotatable around a mounting shaft 21 via a bearing 20.
次に筐体２内の両端部にそれぞれ環状内歯車２２．２３
を固定してあり、環状内歯ｉｔ！２２の南部２２ａと前
記転動歯車部１２ａとを噛合させ、環状内歯車２３の歯
部２３ａと前記転動歯車部１７ａとを噛合させてあり、
また筐体２中間部に設けた軸受２４内に回動自在に嵌装
した円板体２５の一側に前記取付軸１６端を取付け、他
側に前記取付軸２１端を取付けである。Next, annular internal gears 22 and 23 are installed at both ends of the housing 2, respectively.
It is fixed and has an annular internal tooth! 22 and the rolling gear part 12a are engaged with each other, and the tooth part 23a of the annular internal gear 23 and the rolling gear part 17a are engaged with each other,
Further, the end of the mounting shaft 16 is attached to one side of a disc body 25 which is rotatably fitted in a bearing 24 provided in the middle portion of the housing 2, and the end of the mounting shaft 21 is attached to the other side.
さらに、筐体２の両端に、それぞれ軸受２６゜２７を介
して回動自在に支持した出力軸２８゜２９を設け、出力
軸２Ｂ内端に中心部を固定し、同心とした円板体３０の
偏心位置に前記取付軸１６の他端を取付け、出力軸２９
内端に中心部を固定し同心として円板体３１の偏心位置
に前記取付軸２１の他端を取付けである。Furthermore, output shafts 28° 29 are rotatably supported via bearings 26° 27 at both ends of the casing 2, respectively, and the center portion is fixed to the inner end of the output shaft 2B. Attach the other end of the mounting shaft 16 to the eccentric position of the output shaft 29.
The center portion is fixed to the inner end, and the other end of the mounting shaft 21 is mounted at an eccentric position of the disc body 31 so as to be concentric.
従って、出力軸２８、円板体３０、取付軸１６、円板体
２５、取付軸２１、円板体３１、出力軸２９によってク
ランク軸状部材３２を形成しである。Therefore, the output shaft 28, the disc body 30, the mounting shaft 16, the disc body 25, the mounting shaft 21, the disc body 31, and the output shaft 29 form a crankshaft-like member 32.
前記環状作動体１４．１９の横振れを防止するようこれ
ら環状作動体１４．１９の上部および下部に突部’１４
ｂ、１９ｂを設け、筐体２に設けた摺動溝３３．３４に
前記突部１４ｂ。Projections '14 are provided at the upper and lower parts of the annular actuating bodies 14.19 to prevent the annular actuating bodies 14.19 from swinging laterally.
b, 19b are provided, and the protrusion 14b is provided in the sliding groove 33, 34 provided in the housing 2.
１９ｂを運動自在にＦＭ装しである。19b is equipped with FM so that it can be moved freely.
前記シリンダブロック３，４にはウォータジトケット３
５を形成してあり、筐体２の下部にはＡイル抜孔３６を
穿設し、オイルパン３７を設けである。A water jet socket 3 is installed in the cylinder blocks 3 and 4.
5, an A-il extraction hole 36 is bored in the lower part of the housing 2, and an oil pan 37 is provided.
第５図を参照して、本発明内燃機関の各部、各部材は次
のように関連設計しである。Referring to FIG. 5, the various parts and members of the internal combustion engine of the present invention are designed in relation to each other as follows.
即も、環状内歯車２２．２３の歯部２２ａ。Specifically, the tooth portion 22a of the annular internal gear 22.23.
２３ａと回転体１２．１７の転ｖＪｆｉＩ串部１２ａ。23a and the rotation of the rotating body 12.17.
１７ａの歯部が噛合し、環状作動体１４．１９のｖＸ線
方向往復動を回転体１２．１７の自転と、環状内歯車２
２．２３に沿っての公転とに置換するとともにクランク
軸状部材３２を回動させるように形成しである。The teeth of 17a mesh, and the reciprocating motion of the annular actuating body 14.19 in the vX-ray direction is caused by the rotation of the rotating body 12.17 and the annular internal gear 2.
2.23, and the crankshaft-like member 32 is rotated.
この場合、回転体１２．１７の中心を＜Ａ）トシ、回転
体１２．１７の転動ＷＪｉ部１２ａ。In this case, the center of the rotating body 12.17 is <A) Toshi, the rolling WJi portion 12a of the rotating body 12.17.
１７ａの中心を（Ｂ）とし、転動歯車部１２ａ。The center of 17a is (B), and the rolling gear part 12a.
１７ａが環状内歯ヰ）２２．２３の南部２２８゜２３ａ
に沿って転動する軌跡を（Ｃ）とし、転動歯車部１２ａ
、ｉ７ａが環状内歯車２２゜２３の歯部２２ａ、２３ａ
に交わる点を（Ｄ）とし、転動歯車部１２８．１７ａを
有する回転体１２．１７の２回転に対してクランク軸状
部材３２は１回転するものとしてあり、（Ａ＞から（Ｄ
）は（Ａ−８） ＋ （Ｂ−Ｄ）であり、（Ａ−Ｂ）＋
（Ｂ〜Ｄ）に対しくＢ−Ｄ）は２分の１としてあり、回
転体１２．１７の転動歯車部１２ａ、１７ａは中心（Ｂ
）が環状内ｍ車２２．２３内を転動する転動歯車部１２
ａ。17a is the annular internal tooth 22.23 southern part 228° 23a
The locus of rolling along the rolling gear portion 12a is defined as (C), and the rolling gear portion 12a
, i7a is the tooth portion 22a, 23a of the annular internal gear 22゜23.
The intersection point is (D), and it is assumed that the crankshaft member 32 rotates once for every two rotations of the rotating body 12.17 having the rolling gear portion 128.17a, and from (A> to (D)
) is (A-8) + (B-D), and (A-B) +
(B-D) is one half of (B-D), and the rolling gear portions 12a and 17a of the rotating body 12.17 are located at the center (B-D).
) rolls inside the annular inner m wheel 22, 23.
a.
１７ａの作動によって自転し公転する。このようにして
直線往復動を回転動に変″換する。It rotates and revolves by the operation of 17a. In this way, linear reciprocating motion is converted into rotational motion.
本発明は、２サイクルエンジン、４サイクルエンジン、
ディーゼルエンジン等に適用し得、これらエンジンの必
要部材、例えば点火栓、吸入弁、排気弁等はシリンダブ
ロック内に配設し、あるいは燃料哨用弁等を設ける。The present invention provides a two-stroke engine, a four-stroke engine,
It can be applied to diesel engines, etc., and the necessary parts of these engines, such as spark plugs, intake valves, exhaust valves, etc., are disposed within the cylinder block, or a fuel diverter valve, etc. is provided.
本発明は前記のように構成し、次のように作動する。The present invention is constructed as described above and operates as follows.
即チ、シ！Ｊンダ室５ａ 、５ｂ １６ａ 、６ｂにお
けるピストン８．９，１０．１１の吸入行程、圧縮行程
、爆発行程、排気行程作動によってクランク軸状部材３
２を回動させ、出力軸２８゜２９を回転させる。Immediately, shi! The crankshaft member 3 is activated by the suction stroke, compression stroke, explosion stroke, and exhaust stroke of the pistons 8.9, 10.11 in the cylinder chambers 5a, 5b, 16a, and 6b.
2 to rotate the output shaft 28°29.
即ち、ピストン８．９．１０．１１の往復動は環状作動
体１４．１９を直線往復ｖＪさせ、転動歯車部１２ａ、
１７ａが環状内歯車２２゜２３に沿って回動するよう回
転体１２．１７は回転し、自転、公転する回転体１２．
１７によってクランク軸状部材３２が回転し、出力軸２
８．２９を回転させる。That is, the reciprocating motion of the piston 8.9.10.11 causes the annular actuating body 14.19 to reciprocate in a straight line vJ, and the rolling gear portion 12a,
The rotating body 12.17 rotates so that the rotating body 12.17a rotates along the annular internal gear 22 and 23, causing the rotating body 12.17 to rotate and revolve.
17 rotates the crankshaft member 32, and the output shaft 2
8. Rotate 29.
転動歯車部が環状内歯車内を転動して回転体が回動する
ことにより、クランク軸状部材を回動し出力軸に高出力
が得られる。The rolling gear portion rolls within the annular internal gear and the rotating body rotates, thereby rotating the crankshaft-like member and providing high output to the output shaft.
４サイクルエンジンの場合について説明すれば、ピスト
ン上死点で吸入弁（図示せず）が開き、吸入が行われて
下死点で吸入弁が閉じ、吸入終了後、下死点より圧縮が
行われ上死点で圧縮行程を終了し、上死点付近で混合気
に点火し爆発行程に移り、下死点において排気弁（図示
せず）が開き排気が行われ、上死点で排気弁が開じ０［
気行程を終了し、これらの行程により連続運転する。In the case of a 4-stroke engine, an intake valve (not shown) opens at the top dead center of the piston, suction occurs, the intake valve closes at the bottom dead center, and after suction ends, compression begins from the bottom dead center. The compression stroke ends at top dead center, the air-fuel mixture is ignited near top dead center and the explosion stroke begins, the exhaust valve (not shown) opens at bottom dead center to perform exhaust, and the exhaust valve closes at top dead center. opens and 0 [
The air stroke is completed and continuous operation is performed using these strokes.
（発明の効果）
本発明内燃機関はレシプロエンジンに比較して同一シリ
ンダ容積、同−熱料のもとにおいて、出力を倍増させる
ことできる。(Effects of the Invention) Compared to a reciprocating engine, the internal combustion engine of the present invention can double the output with the same cylinder volume and the same amount of heat.
換言すれば、同一出力を得るのに１／２の熱料で足り、
かつエンジン部分の大きさを１／２とすることができ、
省エネルギーと省資源化の両効果を有するものである。In other words, 1/2 the heating charge is sufficient to obtain the same output,
And the size of the engine part can be reduced to 1/2,
This has the effect of both energy saving and resource saving.
第１図は本発明内燃機関の横断平面図、第２図は同・縦
断正面図、第３図は回転体の転動歯車部と環状内歯車の
関連構造を示す要部正面図、第４図は同・一部切欠側面
図、第５図は本発明内燃機関の作動説明図である。
１・・・内燃機関、２・・・筐体、３．４・・・シリン
ダブロック、８，９．１０．１１・・・ビスＩヘン、１
２．１７・・・回転体、１２ａ、１７ａ・・・転動歯巾
部、１２ｂ、１７ｂ・・・円盤状部、Ｉｌ、 １９・・
・環状作動体、１６．２１・・・取付軸、２２゜２３・
・・環状内歯車、２５，３０．３１・・・円板体。
特 許 出 願 人 辻 岡 年
明第 ２ 図
＄３８ 第４臼
、！ｊｌ、５？；１Fig. 1 is a cross-sectional plan view of the internal combustion engine of the present invention, Fig. 2 is a longitudinal sectional front view thereof, Fig. 3 is a front view of main parts showing the related structure of the rolling gear portion of the rotating body and the annular internal gear, and Fig. 4 The figure is a partially cutaway side view of the same, and FIG. 5 is an explanatory diagram of the operation of the internal combustion engine of the present invention. DESCRIPTION OF SYMBOLS 1... Internal combustion engine, 2... Housing, 3.4... Cylinder block, 8,9.10.11... Bis I Hen, 1
2.17...Rotating body, 12a, 17a...Rolling tooth width part, 12b, 17b...Disc-shaped part, Il, 19...
・Annular operating body, 16.21...Mounting shaft, 22゜23・
... Annular internal gear, 25, 30. 31 ... Disc body. Patent applicant: Tsujioka
Ming 2nd figure $38 4th mortar,! jl, 5? ;1
Claims (1)
ブロックの内部に形成したシリンダ室内にそれぞれ嵌装
したピストンを対側に取付ける環状作動体を設け、回転
体の円盤状部を前記環状作動体内に回動自在に取付ける
とともに回転体の転動歯車部を筐体に固設した環状内歯
車に転動自在とし、前記回転体の取付軸、この取付軸の
両端に達成した円板体、この円板体の中心に連設した出
力軸を設けてなることを特徴とした内燃機関。Cylinder blocks are fixedly installed on both sides of the housing, and an annular actuating body is provided on the opposite side to which pistons fitted in cylinder chambers formed inside the cylinder block are attached, and the disc-shaped portion of the rotating body is inserted into the annular actuating body. At the same time, the rolling gear part of the rotating body is rotatably attached to an annular internal gear fixed to the housing, and the mounting shaft of the rotating body, the disc body formed at both ends of this mounting shaft, and this An internal combustion engine characterized by having an output shaft connected to the center of a disc body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31482386A JPS63167031A (en) | 1986-12-26 | 1986-12-26 | Internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31482386A JPS63167031A (en) | 1986-12-26 | 1986-12-26 | Internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63167031A true JPS63167031A (en) | 1988-07-11 |
Family
ID=18058028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31482386A Pending JPS63167031A (en) | 1986-12-26 | 1986-12-26 | Internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63167031A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0454627A2 (en) * | 1990-02-26 | 1991-10-30 | Paolo Lombardi | Engine with double-acting pistons and without connecting rods |
| WO2008010490A1 (en) * | 2006-07-18 | 2008-01-24 | Univ Shizuoka Nat Univ Corp | Cycloid reciprocating engine and pump employing this crank mechanism |
| WO2010000891A1 (en) * | 2008-07-03 | 2010-01-07 | Gomez Celada Jose Carlos | Engine with double piston inside horizontal facing cylinders |
| JP2018119498A (en) * | 2017-01-26 | 2018-08-02 | 株式会社石川エナジーリサーチ | Opposite piston type engine |
| JP2019090424A (en) * | 2019-03-19 | 2019-06-13 | 株式会社石川エナジーリサーチ | Opposite piston type engine |
| WO2023163085A1 (en) * | 2022-02-25 | 2023-08-31 | 株式会社日本ビデオセンター | Engine |
-
1986
- 1986-12-26 JP JP31482386A patent/JPS63167031A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0454627A2 (en) * | 1990-02-26 | 1991-10-30 | Paolo Lombardi | Engine with double-acting pistons and without connecting rods |
| EP0454627A3 (en) * | 1990-02-26 | 1992-12-16 | Paolo Lombardi | Engine with double-acting pistons and without connecting rods |
| WO2008010490A1 (en) * | 2006-07-18 | 2008-01-24 | Univ Shizuoka Nat Univ Corp | Cycloid reciprocating engine and pump employing this crank mechanism |
| WO2010000891A1 (en) * | 2008-07-03 | 2010-01-07 | Gomez Celada Jose Carlos | Engine with double piston inside horizontal facing cylinders |
| ES2359196A1 (en) * | 2008-07-03 | 2011-05-19 | Jose Carlos Gomez Celada | Engine with double piston inside horizontal facing cylinders |
| JP2018119498A (en) * | 2017-01-26 | 2018-08-02 | 株式会社石川エナジーリサーチ | Opposite piston type engine |
| WO2018138947A1 (en) * | 2017-01-26 | 2018-08-02 | 株式会社石川エナジーリサーチ | Opposed piston type engine |
| CN108361108A (en) * | 2017-01-26 | 2018-08-03 | 株式会社石川能源研究 | Opposed piston engine |
| CN108361108B (en) * | 2017-01-26 | 2020-09-01 | 株式会社石川能源研究 | Opposed piston engine |
| US10837322B2 (en) | 2017-01-26 | 2020-11-17 | Ishikawa Energy Research Co., Ltd. | Opposed piston type engine |
| JP2019090424A (en) * | 2019-03-19 | 2019-06-13 | 株式会社石川エナジーリサーチ | Opposite piston type engine |
| WO2023163085A1 (en) * | 2022-02-25 | 2023-08-31 | 株式会社日本ビデオセンター | Engine |
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