WO2012017590A1 - Reciprocating engine - Google Patents
Reciprocating engine Download PDFInfo
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- WO2012017590A1 WO2012017590A1 PCT/JP2011/003346 JP2011003346W WO2012017590A1 WO 2012017590 A1 WO2012017590 A1 WO 2012017590A1 JP 2011003346 W JP2011003346 W JP 2011003346W WO 2012017590 A1 WO2012017590 A1 WO 2012017590A1
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- piston
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- gas chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
- F16J10/02—Cylinders designed to receive moving pistons or plungers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/12—Details
- F16J9/20—Rings with special cross-section; Oil-scraping rings
Definitions
- the present invention improves the reciprocating engine in which the piston is supported by high-temperature and high-pressure combustion gas (gas pressure float) against the side pressure acting on the piston in the explosion and expansion stroke, and the frictional resistance between the piston and the cylinder is reduced. About.
- the half ring may be formed of a metal plate having a low thermal conductivity (poor thermal conductivity), such as a stainless steel plate or a stainless steel plate.
- the half ring 13 has a vertical width 14 shorter than the vertical width 9 of the gas chamber 4 as a whole. This is because the gap 17 is formed in the vertical direction in a state where the half ring 13 is inserted into the gas chamber 4. The half ring 13 moves up and down in the gas chamber 4 by the distance of the gap 17.
- the half ring 13 is inserted into the gas chamber 4 with the front center portion 15 aligned with the thrust side 10.
- the top ring 5 that forms the gas chamber 4 of the piston 2 of the reciprocating engine 1 of this embodiment is provided in parallel with the piston top surface 18.
- the ring 6 is provided so as to be inclined downward toward the thrust side 10. That is, the second ring 6 is provided farther away from the top ring 5 on the thrust side 10 and closer to the anti-thrust side.
- a plurality of gas passage holes 23 are provided in the upper portion 22 of the thrust side 10 of the cylinder inner surface 8.
- the combustion chamber 25 above the piston 2 and the gas chamber 4 of the piston 2 pass through the recess 24 of the gas passage hole 23. And the high-temperature and high-pressure combustion gas 12 in the combustion chamber 25 is introduced and held in the gas chamber 4.
- the piston 2 tends to be pressed against the cylinder inner surface 8 against the thrust side 10 by the action of the side pressure, but is supported from the thrust side 10 by the high-temperature and high-pressure combustion gas 12 introduced and held in the gas chamber 4 (to the piston 2).
- the lowering stroke is lowered in a state of being opposed to the acting side pressure.
- the introduction (inflow), holding, and discharging of the high-temperature and high-pressure combustion gas 12 are repeatedly performed in the gas chamber 4 of the piston 2.
- the half ring 13 continues to move up and down in the gas chamber 4 and always cleans the gas chamber 4.
- the gas chamber 4 is repeatedly subjected to the introduction and maintenance of the high-temperature and high-pressure combustion gas 12, but due to the cleaning action of the half ring 13, carbon adheres to the inside of the gas chamber 4, particularly the surface 19 of the second land 7. Occurrence of deposition is prevented.
- the half ring 13 is formed of a metal plate having low thermal conductivity, the half ring 13 is exposed to the high-temperature and high-pressure combustion gas 12 introduced into the gas chamber 4 and is in a high heat state. Thereafter, the high-temperature and high-pressure combustion gas 12 introduced into the gas chamber 4 comes into contact with the hot half ring 13 and is exposed to the surface of the gas, so that the temperature drop in the gas chamber 4 is suppressed.
- the piston 2 is sufficiently supported from the thrust side (gas pressure float) and the frictional resistance between the piston 2 and the inner surface of the cylinder 3 is sufficiently reduced.
- the high-temperature and high-pressure combustion gas 12 introduced into the gas chamber 4 can be kept at a high temperature by being exposed to the half-ring that is in a high-temperature state. Can be more preferably prevented.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
This reciprocating engine (1) is such that high-temperature high-pressure combustion gas (12) above a piston (2) is introduced during the initial period of an expansion step from a gas path hole (23) provided at the upper portion (22) on the thrust side (10) of a cylinder inner surface (8) to a gas chamber (4) formed by being enclosed by the cylinder inner surface (8) and the second land (7), second ring (6), and top ring (5) of the piston (2), and the piston (2) is supported from the thrust side (10) by means of the introduced high-temperature high-pressure combustion gas (12). In the gas chamber (4), a half ring (13) comprising a heat resistant metal plate having low thermal conductivity is inserted in a vertically mobile manner with a gap (20) in the vertical direction and in a state of capping the second land (7) from the thrust side (10), and moves vertically by means of the reciprocating motion of the piston (2).
Description
本発明は、爆発膨張行程において、ピストンに作用する側圧に対抗して、ピストンを高温高圧燃焼ガスによって支持（ガス圧フロート）し、ピストンとシリンダとの摩擦抵抗を減少させた往復動エンジンの改良に関する。
The present invention improves the reciprocating engine in which the piston is supported by high-temperature and high-pressure combustion gas (gas pressure float) against the side pressure acting on the piston in the explosion and expansion stroke, and the frictional resistance between the piston and the cylinder is reduced. About.
特許文献１から４に記載の技術は、ピストンのセカンドランド部にガス室を形成し、爆発膨張行程初期に、このガス室に、シリンダ内面に設けたガス通路穴から、ピストン上方の高温高圧燃焼ガスを導入、保持させ、この導入した高温高圧燃焼ガスによりピストンをスラスト側から支持し、ピストンとシリンダ内面との摩擦抵抗を減少する技術である。
In the techniques described in Patent Documents 1 to 4, a gas chamber is formed in the second land portion of the piston, and at the initial stage of the explosion / expansion stroke, the gas chamber is provided with a high-temperature and high-pressure combustion above the piston from a gas passage hole provided in the cylinder inner surface. This is a technique that introduces and holds gas, supports the piston from the thrust side by the introduced high-temperature and high-pressure combustion gas, and reduces the frictional resistance between the piston and the inner surface of the cylinder.
しかし、エンジン運転中、上記ガス室には、ピストン上方の高温高圧燃焼ガスの導入、保持、排出が繰り返される。すると、ガス室の表面には次第にカーボンの付着堆積が発生してくる。また、ガス室は容積が小さい割にガス圧を囲む表面積が大きいため高温高圧燃焼ガスは、ガス室に導入されると温度が下がり、ガス圧が下がる。
However, during operation of the engine, introduction, retention and discharge of the high-temperature and high-pressure combustion gas above the piston are repeated in the gas chamber. Then, carbon deposits gradually accumulate on the surface of the gas chamber. In addition, since the gas chamber has a large surface area surrounding the gas pressure for a small volume, the temperature of the high-temperature high-pressure combustion gas decreases when it is introduced into the gas chamber, and the gas pressure decreases.
そこで、本発明は、エンジン運転が長期に渡り、上記ガス室に高温高圧燃焼ガスの導入、保持、排出が繰り返されても、ガス室にはカーボンの付着、堆積が発生しない往復動エンジンを提供するものであり、ガス室に導入された高温高圧燃焼ガスの温度低下延いてははガス圧の低下を抑制し、高圧ガスによりピストンを支持（ガス圧フロート）し、ピストンとシリンダとの摩擦抵抗を減少させた往復動エンジンを提供するものである。
Therefore, the present invention provides a reciprocating engine that does not cause carbon adhesion or accumulation in the gas chamber even when the engine operation is performed for a long period of time and the introduction, maintenance, and discharge of the high-temperature and high-pressure combustion gas are repeated in the gas chamber. The temperature of the high-temperature and high-pressure combustion gas introduced into the gas chamber is reduced, and thus the reduction of the gas pressure is suppressed. The piston is supported by the high-pressure gas (gas pressure float), and the friction resistance between the piston and cylinder It is intended to provide a reciprocating engine in which
本発明は、ピストンのトップリングとセカンドリングとセカンドランド、及びシリンダ内面とにより囲まれて形成されたガス室に、膨張行程の初期においてシリンダ内面のスラスト側の上部位に設けたガス通路穴からピストン上方の高温高圧燃焼ガスを導入し、この導入高温高圧燃焼ガスによってピストンをスラスト側から支持するようにした往復動エンジンにおいて、上記ガス室内に耐熱性を有し、熱伝導率の低い金属板からなる半割リングがスラスト側からセカンドランドに被せた状態で、かつ上下方向に隙間をもって上下動自在に挿入され、ピストンの往復運動によって上下運動するようにした往復動エンジンである。
The present invention provides a gas chamber surrounded by a piston top ring, a second ring, a second land, and a cylinder inner surface, and a gas passage hole provided in an upper portion on the thrust side of the cylinder inner surface in the initial stage of the expansion stroke. In a reciprocating engine in which a high-temperature high-pressure combustion gas above the piston is introduced and the piston is supported from the thrust side by this introduced high-temperature high-pressure combustion gas, the metal plate having heat resistance and low thermal conductivity in the gas chamber A reciprocating engine in which a half ring made of is placed on a second land from the thrust side and is vertically movable with a gap in the vertical direction so as to move up and down by a reciprocating motion of a piston.
上記半割リングは、熱伝導率の低い（熱伝導性の悪い）金属板、例えばステンレス板、ステンレス鋼板等から形成されてよい。
The half ring may be formed of a metal plate having a low thermal conductivity (poor thermal conductivity), such as a stainless steel plate or a stainless steel plate.
尚、本発明の往復動エンジンにおいて、上記「上下方向」及び「上下動」はピストンの往復運動方向に沿った方向の動きを意味する。
In the reciprocating engine of the present invention, the above “vertical direction” and “vertical movement” mean movement in the direction along the reciprocating direction of the piston.
本発明の往復動エンジンでは、ガス室が高温高圧燃焼ガスの導入、保持、排出の繰り返しにさらされていても、ガス室内は半割リングが常に上下動を続け、掃除行為を行っているため、ガス室内はカーボンの付着、堆積が発生しない。
In the reciprocating engine of the present invention, even if the gas chamber is exposed to repeated introduction, maintenance, and discharge of high-temperature and high-pressure combustion gas, the halved ring constantly moves up and down in the gas chamber and performs a cleaning action. In the gas chamber, carbon adhesion and deposition do not occur.
更に、上記半割リングは、熱伝導率の低い金属板により形成されているため、ガス室に導入された高温高圧燃焼ガスにさらされて高熱状態となっている。以後、ガス室に導入された高温高圧燃焼ガスはこの高熱状態の半割リングに接し、その表面にさらされるためガス室内での温度低下が抑制され、従って、高圧ガスを保ち、ピストンをスラスト側から十分に支持（ガス圧フロート）を続け、ピストンとシリンダ内面との摩擦抵抗を十分に減少させる。
Furthermore, since the half ring is formed of a metal plate having low thermal conductivity, it is exposed to the high-temperature and high-pressure combustion gas introduced into the gas chamber and is in a high heat state. Thereafter, the high-temperature and high-pressure combustion gas introduced into the gas chamber is in contact with this high-temperature half ring and is exposed to the surface of the gas chamber, so the temperature drop in the gas chamber is suppressed. Sufficient support (gas pressure float) is continued from this, and the frictional resistance between the piston and the cylinder inner surface is sufficiently reduced.
更に本発明においては、ガス室に導入された高温高圧燃焼ガスは高熱状態となっている半割リングにさらされて高温を保ち得る結果、ガス室内でのカーボンの付着、堆積の発生を更に好ましく防ぎ得る。
Furthermore, in the present invention, the high-temperature and high-pressure combustion gas introduced into the gas chamber can be kept at a high temperature by being exposed to the half-ring that is in a high-temperature state, and therefore, it is more preferable that carbon adhere to and deposit in the gas chamber. Can prevent.
以下、本発明の実施形態を図面に示した実施例に基づいて説明する。
Hereinafter, embodiments of the present invention will be described based on examples shown in the drawings.
図１及び図２は、爆発膨張行程におけるピストン２の降下工程初期の様子を示す。
1 and 2 show the initial state of the lowering process of the piston 2 in the explosion / expansion stroke.
図１及び図２には、爆発膨張行程初期にある本実施例の往復動エンジン１が示されている。２はピストン、３はシリンダである。そして、４はガス室である。ガス室４は、ピストン２のトップリング５とセカンドリング６と、セカンドランド７とシリンダ内面８とにより囲まれて形成されている。ガス室４は上下方向巾９がスラスト側１０で広く、反スラスト側１１で狭くなっている。
1 and 2 show the reciprocating engine 1 of this embodiment in the early stage of the explosion and expansion stroke. 2 is a piston, 3 is a cylinder. Reference numeral 4 denotes a gas chamber. The gas chamber 4 is formed by being surrounded by a top ring 5, a second ring 6, a second land 7, and a cylinder inner surface 8 of the piston 2. The gas chamber 4 has a vertical width 9 wide on the thrust side 10 and narrow on the anti-thrust side 11.
これは、ガス圧を受ける面積をスラスト側１０において広くし、反スラスト側１１で小さくし、導入、保持した高温高圧燃焼ガス１２によってピストン２をスラスト側１０から支持（ピストン側圧に対抗して）し、反スラスト側１１からの押し返しをわずかにするためにある。
This is because the piston 2 is supported from the thrust side 10 by the high-temperature and high-pressure combustion gas 12 that is introduced and held by increasing the area that receives the gas pressure on the thrust side 10 and decreasing it on the anti-thrust side 11 (in opposition to the piston side pressure). In order to minimize the push-back from the anti-thrust side 11.
さて、ガス室４には、円弧形状の半割リング１３がスラスト側１０からセカンドランド７に被せた状態で挿入されている。かつ、半割リング１３はガス室４内において、上下方向（ピストン２の往復動方向）に隙間１７をもって上下動自在に挿入されている。
Now, an arc-shaped half ring 13 is inserted into the gas chamber 4 so as to cover the second land 7 from the thrust side 10. The half ring 13 is inserted in the gas chamber 4 so as to be vertically movable with a gap 17 in the vertical direction (reciprocating direction of the piston 2).
以下、図３に示すように、半割リング１３は、セカンドランド７の円周面に合わせた円弧形状に形成されている。
Hereinafter, as shown in FIG. 3, the half ring 13 is formed in an arc shape matching the circumferential surface of the second land 7.
また、半割リング１３は、正面、側面をガス室４の形状に合わせ、上下方向巾１４が正面中央部１５において、広く、両側端１６、１６で狭く形成されている。
Further, the half ring 13 is formed such that the front and side surfaces thereof match the shape of the gas chamber 4, and the vertical width 14 is wide at the front central portion 15 and narrow at both side ends 16 and 16.
さらに半割リング１３は上下方向巾１４が全体として、ガス室４の上下方向巾９より短くしてある。これは、この半割リング１３がガス室４に挿入された状態で、上下方向に隙間１７を作るためである。この隙間１７の距離分、半割リング１３はガス室４内で上下動する。
Further, the half ring 13 has a vertical width 14 shorter than the vertical width 9 of the gas chamber 4 as a whole. This is because the gap 17 is formed in the vertical direction in a state where the half ring 13 is inserted into the gas chamber 4. The half ring 13 moves up and down in the gas chamber 4 by the distance of the gap 17.
図１及び図２に示すように、半割リング１３はその正面中央部１５をスラスト側１０に合わせてガス室４に挿入されている。
As shown in FIGS. 1 and 2, the half ring 13 is inserted into the gas chamber 4 with the front center portion 15 aligned with the thrust side 10.
特に、半割リング１３はエンジン運転中、ピストン２の往復運動によって、ガス室４を形成するセカンドランド７の表面を上下に掃くように上下動する。
Particularly, the half ring 13 moves up and down so as to sweep up and down the surface of the second land 7 forming the gas chamber 4 by reciprocating movement of the piston 2 during engine operation.
また、もちろん、半割リング１３の厚みｔは、シリンダ内面８とセカンドランド７の表面１９との隙間２０内において、エンジン運転中、自由に上下（ピストン２の往復動方向に沿って）移動できる厚さである。
Of course, the thickness t of the half ring 13 can freely move up and down (along the reciprocating direction of the piston 2) during engine operation within the gap 20 between the cylinder inner surface 8 and the surface 19 of the second land 7. Is the thickness.
また、半割リング１３は、高温燃焼ガスにさらされて耐え得る耐熱性を有すると共に、熱伝導率の低い（熱伝導性の悪い）金属板より形成されている。例えば、ステンレス板、ステンレス鋼板等から形成されている。このため、上記半割リング１３は、高温の燃焼ガスにさらされると熱せられるが熱移動が小さいため高熱状態となっている。尚、熱伝導率の低いは、断熱性が高いともいえる。
The half ring 13 is formed of a metal plate having heat resistance that can withstand exposure to high-temperature combustion gas and low thermal conductivity (poor thermal conductivity). For example, it is formed from a stainless steel plate, a stainless steel plate or the like. For this reason, the half ring 13 is heated when exposed to high-temperature combustion gas, but has a high heat state because heat transfer is small. In addition, it can be said that low heat conductivity has high heat insulation.
図１、図２に示されるように、本実施例往復動エンジン１のピストン２について、ガス室４を形成するところのトップリング５は、ピストン頂面１８と平行に設けられており、他方セカンドリング６はスラスト側１０に向かって下り傾斜して設けられている。即ち、セカンドリング６はスラスト側１０においてトップリング５から遠く離れ、反スラスト側に近づくにつれて接近して設けられている。
As shown in FIGS. 1 and 2, the top ring 5 that forms the gas chamber 4 of the piston 2 of the reciprocating engine 1 of this embodiment is provided in parallel with the piston top surface 18. The ring 6 is provided so as to be inclined downward toward the thrust side 10. That is, the second ring 6 is provided farther away from the top ring 5 on the thrust side 10 and closer to the anti-thrust side.
よって、トップリング５とセカンドリング６との間（距離）、即ちガス室４の上下方向巾９はスラスト側１０において幅広く、反スラスト側１１に近づくにつれて次第に幅狭になっている。
Therefore, the top ring 5 and the second ring 6 (distance), that is, the vertical width 9 of the gas chamber 4 is wide on the thrust side 10 and gradually becomes narrower as it approaches the anti-thrust side 11.
また、シリンダ内面８のスラスト側１０の上部位２２には、複数のガス通路穴２３が設けられている。ピストン２の降下行程において、ピストン２のトップリング５がガス通路穴２３上を通過するとき、このガス通路穴２３の凹み２４を介して、ピストン２上方の燃焼室２５とピストン２のガス室４とが連通し、燃焼室２５の高温高圧燃焼ガス１２がガス室４に導入され保持される。
A plurality of gas passage holes 23 are provided in the upper portion 22 of the thrust side 10 of the cylinder inner surface 8. In the downward stroke of the piston 2, when the top ring 5 of the piston 2 passes over the gas passage hole 23, the combustion chamber 25 above the piston 2 and the gas chamber 4 of the piston 2 pass through the recess 24 of the gas passage hole 23. And the high-temperature and high-pressure combustion gas 12 in the combustion chamber 25 is introduced and held in the gas chamber 4.
即ち、爆発膨張行程の初期において、ピストン２のトップリング５がシリンダ内面８の上部位のガス通路穴２３を通過するとき、ピストン２の上方の燃焼室２５とピストン２のガス室４とが通じ合い、高温高圧燃焼ガス１２がガス室４に導入、保持される。
That is, at the initial stage of the explosion / expansion stroke, when the top ring 5 of the piston 2 passes through the gas passage hole 23 in the upper part of the cylinder inner surface 8, the combustion chamber 25 above the piston 2 and the gas chamber 4 of the piston 2 communicate with each other. At the same time, the high-temperature and high-pressure combustion gas 12 is introduced and held in the gas chamber 4.
このとき、ピストン２は側圧の作用を受けスラスト側１０にシリンダ内面８に押し付けられようとするが、ガス室４に導入、保持された高温高圧燃焼ガス１２によってスラスト側１０から支持（ピストン２に作用する側圧に対抗して）された状態で降下行程を降下する。
At this time, the piston 2 tends to be pressed against the cylinder inner surface 8 against the thrust side 10 by the action of the side pressure, but is supported from the thrust side 10 by the high-temperature and high-pressure combustion gas 12 introduced and held in the gas chamber 4 (to the piston 2). The lowering stroke is lowered in a state of being opposed to the acting side pressure.
本実施例往復動エンジン１によれば、エンジン運転中、即ち、ピストン２が往復運動中、ピストン２のガス室４には、高温高圧燃焼ガス１２の導入（流入）、保持、排出が繰り返し行われていると共に、このガス室４内は半割リング１３が上下動を続け、そのガス室４内の掃除行為を常に行っている。このため、ガス室４は繰り返して高温高圧燃焼ガス１２の導入、保持を受けるが、半割リング１３の掃除行為によって、ガス室４内、特に、セカンドランド７の表面１９等にカーボンの付着、堆積の発生が防止される。
According to the reciprocating engine 1 of this embodiment, during the engine operation, that is, when the piston 2 is reciprocating, the introduction (inflow), holding, and discharging of the high-temperature and high-pressure combustion gas 12 are repeatedly performed in the gas chamber 4 of the piston 2. In addition, the half ring 13 continues to move up and down in the gas chamber 4 and always cleans the gas chamber 4. For this reason, the gas chamber 4 is repeatedly subjected to the introduction and maintenance of the high-temperature and high-pressure combustion gas 12, but due to the cleaning action of the half ring 13, carbon adheres to the inside of the gas chamber 4, particularly the surface 19 of the second land 7. Occurrence of deposition is prevented.
また、上記半割リング１３は、熱伝導率の低い金属板により形成されているため、ガス室４内に導入された高温高圧燃焼ガス１２にさらされて高熱状態となっている。以後、ガス室４に導入された高温高圧燃焼ガス１２はこの高熱状態の半割リング１３に接し、その表面にさらされるためガス室４内での温度低下が抑制され、従って、高圧を保ち、ピストン２をスラスト側から十分に支持（ガス圧フロート）を続け、ピストン２とシリンダ３内面との摩擦抵抗を十分に減少させる。
Further, since the half ring 13 is formed of a metal plate having low thermal conductivity, the half ring 13 is exposed to the high-temperature and high-pressure combustion gas 12 introduced into the gas chamber 4 and is in a high heat state. Thereafter, the high-temperature and high-pressure combustion gas 12 introduced into the gas chamber 4 comes into contact with the hot half ring 13 and is exposed to the surface of the gas, so that the temperature drop in the gas chamber 4 is suppressed. The piston 2 is sufficiently supported from the thrust side (gas pressure float) and the frictional resistance between the piston 2 and the inner surface of the cylinder 3 is sufficiently reduced.
更に、本発明においては、ガス室４に導入された高温高圧燃焼ガス１２は高熱状態となっている半割リングにさらされて高温を保ち得る結果、ガス室４内でのカーボンの付着、堆積の発生を更に好ましく防ぎうる。
Furthermore, in the present invention, the high-temperature and high-pressure combustion gas 12 introduced into the gas chamber 4 can be kept at a high temperature by being exposed to the half-ring that is in a high-temperature state. Can be more preferably prevented.
１ 往復動エンジン
２ ピストン
３ シリンダ
４ ガス室
５ トップリング
６ セカンドリング
７ セカンドランド
８ シリンダ内面
９ 上下方向巾
１０ スラスト側
１１ 反スラスト側 DESCRIPTION OFSYMBOLS 1 Reciprocating engine 2 Piston 3 Cylinder 4 Gas chamber 5 Top ring 6 Second ring 7 Second land 8 Cylinder inner surface 9 Vertical width 10 Thrust side 11 Anti-thrust side
２ ピストン
３ シリンダ
４ ガス室
５ トップリング
６ セカンドリング
７ セカンドランド
８ シリンダ内面
９ 上下方向巾
１０ スラスト側
１１ 反スラスト側 DESCRIPTION OF
Claims (3)
- ピストンのトップリングとセカンドリングとセカンドランド、及びシリンダ内面とにより囲まれて形成されたガス室に、膨張行程の初期において、シリンダ内面のスラスト側の上部位に設けたガス通路穴からピストン上方の高温高圧燃焼ガスを導入し、この導入した高温高圧燃焼ガスによってピストンをスラスト側から支持するようにした往復動エンジンにおいて、上記ガス室内に、耐熱性を有し熱伝導率の低い金属板から形成された半割リングがスラスト側からセカンドランドに被せた状態で上下動自在に挿入され、かつガス室に導入された高温高圧燃焼ガスは上記半割リングにさらされ、さらにこの半割リングはピストンの往復運動によって、上下運動するようにした往復動エンジン。 In the gas chamber formed by the piston's top ring, second ring, second land, and cylinder inner surface, in the initial stage of the expansion stroke, the gas passage hole provided in the upper part on the thrust side of the cylinder inner surface is located above the piston. In a reciprocating engine in which high-temperature high-pressure combustion gas is introduced and the piston is supported from the thrust side by the introduced high-temperature high-pressure combustion gas, the gas chamber is formed from a metal plate having heat resistance and low thermal conductivity. The high-temperature and high-pressure combustion gas introduced into the gas chamber is exposed to the above-described half-ring, and the half-ring is a piston. A reciprocating engine that moves up and down by reciprocating motion.
- 上記半割リングはステンレス鋼等のように熱伝導率の低い金属板からなる請求項１に記載の往復動エンジン。 The reciprocating engine according to claim 1, wherein the half ring is made of a metal plate having a low thermal conductivity such as stainless steel.
- 上記半割リングはステンレス板からなる請求項１に記載の往復動エンジン。 The reciprocating engine according to claim 1, wherein the half ring is made of a stainless steel plate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012527569A JP5806216B2 (en) | 2010-08-04 | 2011-06-13 | Reciprocating engine |
| JP2011185353A JP5630404B2 (en) | 2011-06-13 | 2011-08-26 | Reciprocating engine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-175804 | 2010-08-04 | ||
| JP2010175804 | 2010-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012017590A1 true WO2012017590A1 (en) | 2012-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/003346 WO2012017590A1 (en) | 2010-08-04 | 2011-06-13 | Reciprocating engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5806216B2 (en) |
| WO (1) | WO2012017590A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004132322A (en) * | 2002-10-11 | 2004-04-30 | Bando Kiko Co Ltd | Reciprocating engine |
| EP1878901A1 (en) * | 2005-04-27 | 2008-01-16 | Bando Kiko Co., Ltd | Reciprocating engine |
| WO2008047453A1 (en) * | 2006-10-20 | 2008-04-24 | Bando Kiko Co., Ltd. | Reciprocating engine |
-
2011
- 2011-06-13 WO PCT/JP2011/003346 patent/WO2012017590A1/en active Application Filing
- 2011-06-13 JP JP2012527569A patent/JP5806216B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004132322A (en) * | 2002-10-11 | 2004-04-30 | Bando Kiko Co Ltd | Reciprocating engine |
| EP1878901A1 (en) * | 2005-04-27 | 2008-01-16 | Bando Kiko Co., Ltd | Reciprocating engine |
| WO2008047453A1 (en) * | 2006-10-20 | 2008-04-24 | Bando Kiko Co., Ltd. | Reciprocating engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2012017590A1 (en) | 2013-09-19 |
| JP5806216B2 (en) | 2015-11-10 |
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