JPH07127453A - Auxiliary chamber type gas engine - Google Patents
Auxiliary chamber type gas engineInfo
- Publication number
- JPH07127453A JPH07127453A JP5292523A JP29252393A JPH07127453A JP H07127453 A JPH07127453 A JP H07127453A JP 5292523 A JP5292523 A JP 5292523A JP 29252393 A JP29252393 A JP 29252393A JP H07127453 A JPH07127453 A JP H07127453A
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- sub
- communication hole
- gas
- gas fuel
- 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
Classifications
-
- 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
-
- 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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、天然ガスを副室に供
給すると共に、副室内に水噴射して副室での燃焼温度を
低下させてＮＯX の発生を抑制する副室式ガスエンジン
に関する。BACKGROUND OF THE INVENTION This invention supplies the natural gas to the auxiliary combustion chamber, the secondary chamber and the water injection to lower the combustion temperature in the secondary chamber to be suppress the occurrence of the NO X pre-combustion chamber gas engine Regarding
【０００２】[0002]
【従来の技術】従来、天然ガスを主燃料とするエンジン
は、コジェネレーション型エンジンとして、政府、官公
庁研究機関或いは民間会社で開発が進められている。こ
のコジェネレーション型エンジンは、動力を発電機で電
気エネルギーとして取り出し、排気ガスエネルギーが有
する熱を熱交換器で水を加熱して温水にして給湯用とし
て利用している。そして、このコジェネレーション型エ
ンジンは、ホテル、病院、事務所等での電気供給システ
ムとして利用されることが期待されている。天然ガスを
燃料とするガスエンジンとして、例えば、特開昭５４−
１５６９１１号公報、特開昭６３−６３５８号公報、特
開平１−２３２１１９号公報、実公平３−４１０６８号
公報に開示されたものがある。2. Description of the Related Art Conventionally, an engine using natural gas as a main fuel has been developed as a cogeneration engine by a government, a government research agency or a private company. In this cogeneration engine, power is taken out as electric energy by a generator, and heat of exhaust gas energy is heated by a heat exchanger to make hot water, which is used for hot water supply. The cogeneration engine is expected to be used as an electricity supply system in hotels, hospitals, offices and the like. As a gas engine using natural gas as a fuel, for example, JP-A-54-
156911, JP-A-63-6358, JP-A-1-232119, and JP-B-3-41068.
【０００３】また、特開平３−１１５７２５号公報に開
示された副室式断熱エンジンの燃料噴射装置は、断熱構
造の副室に圧縮行程前半に燃料を噴射する燃料噴射手
段、前記副室に圧縮行程後半に水を噴射する水噴射手
段、及び圧縮行程上死点付近で混合気に火花着火するも
のである。Further, a fuel injection device for a sub-chamber type adiabatic engine disclosed in Japanese Patent Laid-Open No. 3-115725 discloses fuel injection means for injecting fuel into a sub chamber of a heat insulating structure in the first half of a compression stroke, and compression in the sub chamber. Water injection means for injecting water in the latter half of the stroke, and spark ignition of the mixture near the top dead center of the compression stroke.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、ナチュ
ラルガスを燃料とするガスエンジンは、燃料がガス体で
あるので、ガソリンと同じように燃料ガスを吸気バルブ
から吸入し、圧縮、着火されているので、圧縮比を大き
くすることができず、理論熱効率は必ずしも高くない。
通常使用されているガスエンジンは、圧縮比が１２〜１
３程度であり、理論熱効率は４８％に過ぎないものであ
り、ガスエンジンの動力を電気エネルギーにした場合に
は、熱効率は３４〜３５％で、場合によっては３０％を
割るような効率である。そこで、ガスエンジンから電気
エネルギーとして取り出す場合に、熱効率を向上させる
ことが望まれているのが現状である。ガスエンジンは、
ナチュラルガス即ち天然ガスを燃料とするものであり、
燃料が気体である。そこで、吸入行程でガスを吸入し、
次いで圧縮すると、高圧縮となり温度が高くなり、自己
着火の現象即ちノッキングが発生する。しかるに、天然
ガスのガス燃料は圧縮比が１２以下でないと、自己着火
するものである。また、エンジンの熱効率については、
圧縮比が小さいと熱効率が小さくなるという現象があ
る。従って、ガスエンジンでは、ガス燃料の自己着火を
避けて、圧縮比を如何に高くするかの課題があると共
に、ＮＯX の発生を抑制するという課題がある。However, in a gas engine that uses natural gas as fuel, since the fuel is a gas body, the fuel gas is sucked from the intake valve, compressed, and ignited like gasoline. However, the compression ratio cannot be increased and the theoretical thermal efficiency is not necessarily high.
A gas engine that is normally used has a compression ratio of 12 to 1
It is about 3 and the theoretical thermal efficiency is only 48%, and when the power of the gas engine is electric energy, the thermal efficiency is 34 to 35%, and in some cases, it is less than 30%. . Therefore, at present, it is desired to improve the thermal efficiency when the electric energy is taken out from the gas engine. Gas engine
It uses natural gas, that is, natural gas as a fuel,
The fuel is gas. Therefore, inhale the gas in the inhalation stroke,
When it is then compressed, it becomes highly compressed and the temperature rises, causing the phenomenon of self-ignition, that is, knocking. However, the gas fuel of natural gas will self-ignite unless the compression ratio is 12 or less. Also, regarding the thermal efficiency of the engine,
When the compression ratio is small, there is a phenomenon that the thermal efficiency becomes small. Thus, the gas engine, avoiding self-ignition of the gaseous fuel, the compression ratio with is one of the challenges to how high, there is a problem of suppressing occurrence of NO X.
【０００５】そこで、この発明の目的は、上記の課題を
解決することであり、副室に天然ガスを導入し、主室で
吸入空気のみを圧縮して圧縮比を高め、主室内の空気を
高温に上昇させた状態で連絡孔弁で連絡孔を開放して主
室の高圧縮空気を副室に流入させ、副室内の天然ガスと
高圧縮空気とを一気に混合させることで短期間に着火燃
焼させ、特に、副室での着火燃焼時に副室内に水を噴射
して燃焼温度を低下させると共に、気化した水蒸気の膨
張によって火炎、未燃混合気等のガスを副室から主室へ
噴出させ、二次燃焼をできるだけ均一な混合気で短時間
で燃焼を完結させ、ＮＯX 、ＨＣ等の発生を低減し、熱
効率を高め、ガス燃料の自己着火を防止してノッキング
の発生を防止する副室式ガスエンジンを提供することで
ある。Therefore, an object of the present invention is to solve the above-mentioned problems, and to introduce the natural gas into the sub chamber, compress only the intake air in the main chamber to increase the compression ratio, and to increase the air in the main chamber. Ignite in a short time by opening the communication hole with the communication hole valve while raising the temperature to a high temperature to allow the highly compressed air in the main chamber to flow into the sub chamber and to mix the natural gas and highly compressed air in the sub chamber all at once. Combustion, especially when igniting and burning in the sub-chamber, water is injected into the sub-chamber to lower the combustion temperature, and gas such as flame and unburned mixture is ejected from the sub-chamber to the main chamber due to expansion of vaporized water vapor. is, to complete the short time combustion with as uniform mixture of secondary combustion, NO X, and reduce the occurrence of HC and the like, enhance the thermal efficiency, preventing the occurrence of knocking by preventing self-ignition of gas fuel It is to provide a sub-chamber gas engine.
【０００６】また、この発明の別の目的は、上記の課題
を解決することであり、副室に天然ガスを導入し、主室
で吸入空気のみを圧縮して圧縮比を高め、主室内の空気
を高温に上昇させた状態で連絡孔弁で連絡孔を開放して
主室の高圧縮空気を副室に流入させ、副室内の天然ガス
と高圧縮空気とを一気に混合させることで短期間に着火
燃焼させ、特に、副室に水を噴射して副室内の燃焼温度
を低下させ、スパークプラグの補助で圧縮行程上死点近
傍で着火燃焼させ、火炎、未燃混合気等のガスを副室か
ら主室へ一気に噴出させて二次燃焼をできるだけ短時間
で燃焼を完結させ、ＮＯX 、ＨＣ等の発生を低減し、ガ
ス燃料の自己着火を防止してノッキングの発生を防止
し、熱効率を向上させると共に排気エネルギーの回収量
を増大させて低燃費を実現する副室式ガスエンジンを提
供することである。Another object of the present invention is to solve the above-mentioned problems. In the main chamber, natural gas is introduced and only the intake air is compressed in the main chamber to increase the compression ratio. Open the communication hole with the communication hole valve while the air is heated to a high temperature to allow the highly compressed air in the main chamber to flow into the sub chamber, and mix the natural gas and highly compressed air in the sub chamber all at once. Ignition and combustion, especially by injecting water into the sub-chamber to lower the combustion temperature in the sub-chamber, and igniting and burning near the top dead center of the compression stroke with the aid of a spark plug to burn gases such as flame and unburned mixture. once jetted from the sub chamber to the main chamber to complete the shortest possible time in the combustion of secondary combustion, NO X and reduce the occurrence of HC and the like, to prevent the occurrence of knocking by preventing self-ignition of the gaseous fuel, Improve fuel efficiency by improving thermal efficiency and increasing exhaust energy recovery To provide a pre-combustion chamber gas engine to achieve.
【０００７】[0007]
【課題を解決するための手段】この発明は、上記の目的
を達成するため、次のように構成されている。即ち、こ
の発明は、シリンダヘッドに形成した副室と吸排気ポー
ト、シリンダ側に形成した主室、前記吸排気ポートに配
置した吸排気弁、前記副室と前記主室とを連通する連絡
孔、吸気行程中頃で前記連絡孔を閉鎖し且つ圧縮行程上
死点付近で開放する連絡孔弁、前記連絡孔を前記連絡孔
弁が閉鎖した状態で前記副室にガス燃料を供給するガス
燃料供給手段、及び前記副室での着火燃焼時に前記連絡
孔の反対側の前記副室の内壁に向けて水を噴射する水噴
射ノズル、から構成したことを特徴とする副室式ガスエ
ンジンに関する。In order to achieve the above object, the present invention is constructed as follows. That is, according to the present invention, a sub chamber formed in the cylinder head and an intake / exhaust port, a main chamber formed on the cylinder side, an intake / exhaust valve arranged in the intake / exhaust port, and a communication hole communicating the sub chamber with the main chamber. , A communication hole valve that closes the communication hole in the middle of the intake stroke and opens near the top dead center of the compression stroke, and a gas fuel supply that supplies gas fuel to the sub chamber with the communication hole valve closed And a water injection nozzle for injecting water toward the inner wall of the sub chamber on the opposite side of the communication hole at the time of ignition and combustion in the sub chamber.
【０００８】又は、この発明は、シリンダヘッドに形成
した副室と吸排気ポート、シリンダ側に形成した主室、
前記吸排気ポートに配置した吸排気弁、前記副室と前記
主室とを連通する連絡孔、吸気行程中頃で前記連絡孔を
閉鎖し且つ圧縮行程中頃に僅かに前記連絡孔を開放して
圧縮行程上死点付近で全開する連絡孔弁、前記連絡孔が
閉鎖した状態で前記副室にガス燃料を供給するガス燃料
供給手段、前記副室内温度を着火温度以下に保持するた
め圧縮行程中頃から前記副室内に水を噴射する水噴射ノ
ズル、及び圧縮行程上死点近くで混合気を着火させるた
め前記副室に設けられたスパークプラグ、から構成した
ことを特徴とする副室式ガスエンジンに関する。Alternatively, according to the present invention, a sub chamber and an intake / exhaust port formed in the cylinder head, a main chamber formed on the cylinder side,
An intake / exhaust valve arranged in the intake / exhaust port, a communication hole that communicates the sub-chamber with the main chamber, the communication hole is closed in the middle of the intake stroke, and the communication hole is slightly opened in the middle of the compression stroke for compression. Communication hole valve that fully opens near the top dead center of the stroke, gas fuel supply means that supplies gas fuel to the sub chamber with the communication hole closed, from the middle of the compression stroke to keep the temperature of the sub chamber below the ignition temperature A sub-chamber gas engine comprising a water injection nozzle for injecting water into the sub-chamber, and a spark plug provided in the sub-chamber for igniting an air-fuel mixture near the top dead center of a compression stroke. .
【０００９】また、この副室式ガスエンジンにおいて、
前記ガス燃料供給手段は前記副室にガス燃料供給口を開
口するガス燃料供給路、及び該ガス燃料供給口に配置さ
れたガス燃料弁から構成されているものである。In this sub-chamber gas engine,
The gas fuel supply means comprises a gas fuel supply passage that opens a gas fuel supply port in the sub chamber, and a gas fuel valve arranged at the gas fuel supply port.
【００１０】[0010]
【作用】この発明による副室式ガスエンジンは、上記の
ように構成されており、次のように作用する。即ち、こ
の副室式ガスエンジンは、シリンダヘッドに形成した副
室とシリンダ側に形成した主室とを連絡孔で連通し、連
絡孔を開閉する連絡孔弁を吸気行程中頃で閉鎖し且つ圧
縮行程上死点付近で開放し、前記連絡孔を前記連絡孔弁
が閉鎖した状態でガス燃料供給手段で前記副室にガス燃
料を供給し、前記副室での着火燃焼時に水噴射ノズルか
ら前記連絡孔の反対側の前記副室の内壁に向けて水を噴
射するように構成したので、副室に噴射された水は副室
壁面及び空気から受熱して気化して水蒸気を発生させて
膨脹する。そこで、水蒸気は火炎、未燃混合気等のガス
を後押しする状態でガスを主室へ押し出し、火炎、未燃
混合気等のガスが副室から連絡孔を通じて主室へ一気に
噴出し、副室内にガスの残留が無くなり、火炎、未燃混
合気等のガスの噴出エネルギーで主室の新気との混合気
が促進され、主室での燃焼ガスが短縮されて性能が向上
し、しかも水噴射によって燃焼ガス温度が低下してＮＯ
X の発生が抑制される。The sub-chamber type gas engine according to the present invention is constructed as described above and operates as follows. That is, in this sub chamber type gas engine, the sub chamber formed in the cylinder head and the main chamber formed in the cylinder side are communicated with each other by a communication hole, and a communication hole valve for opening and closing the communication hole is closed and compressed in the middle of the intake stroke. The gas fuel is supplied to the sub chamber by the gas fuel supply means in the state where the communication hole is opened in the vicinity of the top dead center and the communication hole valve is closed, and when the ignition combustion in the sub chamber is performed, the water injection nozzle is used to Since the water is jetted toward the inner wall of the sub chamber on the opposite side of the communication hole, the water jetted into the sub chamber receives the heat from the sub chamber wall and the air to be vaporized to generate water vapor and expand. To do. Therefore, the water vapor pushes the gas such as flame and unburned gas mixture into the main chamber while pushing the gas into the main chamber, and the gas such as flame and unburned gas mixture blows from the sub chamber to the main chamber all at once through the communication hole. The residual gas is eliminated, and the mixture of air with the fresh air in the main chamber is promoted by the ejection energy of gas such as flame and unburned mixture, and the combustion gas in the main chamber is shortened to improve performance and The injection reduces the temperature of the combustion gas and NO
The generation of X is suppressed.
【００１１】又は、この副室式ガスエンジンは、シリン
ダヘッドに形成した副室とシリンダ側に形成した主室と
を連絡孔で連通し、連絡孔に配置した連絡孔弁が吸気行
程中頃で前記連絡孔を閉鎖し且つ圧縮行程中頃に僅かに
前記連絡孔を開放して圧縮行程上死点付近で全開し、前
記連絡孔が閉鎖した状態で前記副室にガス燃料供給手段
でガス燃料を供給し、圧縮行程中頃から水噴射ノズルで
前記副室内に水を噴射して前記副室内温度を着火温度以
下に保持し、前記副室に設けられたスパークプラグで圧
縮行程上死点近くで混合気を着火させたので、圧縮比を
高めることができると共にリーン燃焼が可能となり、熱
効率を向上できる。副室に水を噴射することによって燃
焼温度を低下させることができ、ＮＯX の発生を抑制で
き、熱効率を向上できる。前記副室にガス燃料を供給し
た後の圧縮行程中頃で前記連絡孔を僅かに開口すること
によって、前記主室から前記副室へガス燃料が着火しな
い程度の空気を供給して予混合気を生成でき、圧縮行程
上死点近傍で全開することによって前記主室から前記副
室へ高温空気を供給して着火燃焼させることができる。Alternatively, in this sub-chamber type gas engine, the sub-chamber formed in the cylinder head and the main chamber formed in the cylinder are communicated with each other through a communication hole, and the communication hole valve disposed in the communication hole is used in the middle of the intake stroke. The communication hole is closed and the communication hole is slightly opened in the middle of the compression stroke to be fully opened near the top dead center of the compression stroke. With the communication hole closed, gas fuel is supplied to the sub chamber by the gas fuel supply means. Then, from the middle of the compression stroke, water is injected into the sub-chamber by a water injection nozzle to maintain the sub-chamber temperature below the ignition temperature, and a spark plug provided in the sub-chamber provides a mixture near the top dead center of the compression stroke. Since the ignition is performed, the compression ratio can be increased, lean combustion can be performed, and the thermal efficiency can be improved. By injecting water into the sub chamber, the combustion temperature can be lowered, NO X generation can be suppressed, and thermal efficiency can be improved. By slightly opening the communication hole in the middle of the compression stroke after supplying the gas fuel to the sub-chamber, air is supplied from the main chamber to the sub-chamber so that the gas fuel is not ignited to generate a premixture. It can be generated, and by fully opening in the vicinity of the top dead center of the compression stroke, high temperature air can be supplied from the main chamber to the sub chamber for ignition and combustion.
【００１２】また、この副室式ガスエンジンは、吸入空
気が主室内で高圧縮比になっても、前記主室内にはガス
燃料が自己着火する程には存在しないので、ガス燃料が
自己着火することなく、ノッキングが発生することがな
く、燃焼ガス温度を低下させて燃焼させることによって
ＮＯX の発生を低減できる。Further, in this sub-chamber type gas engine, even if the intake air has a high compression ratio in the main chamber, the gas fuel does not exist in the main chamber to the extent that it self-ignites, so the gas fuel self-ignites. Without this, knocking does not occur, and the generation of NO x can be reduced by lowering the combustion gas temperature and performing combustion.
【００１３】[0013]
【実施例】以下、図面を参照して、この発明による副室
式ガスエンジンの実施例を説明する。図１はこの発明に
よる副室式ガスエンジンの一実施例を示す断面図、及び
図２は図１の副室式ガスエンジンにおける吸排気弁、連
絡孔弁、水噴射ノズル及びガス燃料の供給の各タイミン
グを示す説明図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sub-chamber gas engine according to the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing an embodiment of a sub-chamber gas engine according to the present invention, and FIG. 2 is a view showing an intake / exhaust valve, a communication hole valve, a water injection nozzle and a gas fuel supply in the sub-chamber gas engine of FIG. It is explanatory drawing which shows each timing.
【００１４】この副室式ガスエンジンは、シリンダブロ
ック１４、シリンダブロック１４にガスケット２１を介
在させて固定されたシリンダヘッド７、シリンダヘッド
７に形成された吸気ポート１５、吸気ポート１５に配置
された吸気弁８、シリンダヘッド７に形成された排気ポ
ート１６、排気ポート１６に配置された排気弁９、シリ
ンダヘッド７に形成されたキャビティ１８に配置した副
室壁体３で形成した副室２、シリンダブロック１４に形
成した孔部１９に嵌合したシリンダライナ１３、該シリ
ンダライナ１３に形成したシリンダ２０内を往復運動す
るピストン４、シリンダ２０側に形成された主室１、及
び主室１と副室２とを連通する副室壁体３に形成した連
絡孔１２を有している。This subchamber gas engine is arranged in a cylinder block 14, a cylinder head 7 fixed to the cylinder block 14 with a gasket 21 interposed therebetween, an intake port 15 formed in the cylinder head 7, and an intake port 15. An intake valve 8, an exhaust port 16 formed in the cylinder head 7, an exhaust valve 9 arranged in the exhaust port 16, an auxiliary chamber 2 formed by an auxiliary chamber wall 3 arranged in a cavity 18 formed in the cylinder head 7, A cylinder liner 13 fitted into a hole 19 formed in the cylinder block 14, a piston 4 reciprocating in a cylinder 20 formed in the cylinder liner 13, a main chamber 1 formed on the cylinder 20 side, and a main chamber 1. It has a communication hole 12 formed in the sub chamber wall body 3 communicating with the sub chamber 2.
【００１５】この副室式ガスエンジンは、特に、連絡孔
１２を開閉するための連絡孔１２に配置された連絡孔弁
５、副室２に水を噴射できる水噴射ノズル６及び副室２
にガス燃料を供給できるガス燃料供給手段を有している
ことである。水噴射ノズル６は、副室２での着火燃焼時
に、連絡孔１２の反対側の副室２の内壁に向けて水を噴
射する多噴孔１７を有している。また、ガス燃料供給手
段は、副室２にガス燃料供給口２２を開口するガス燃料
供給路１０、及び該ガス燃料供給口２２に配置されたガ
ス燃料弁２３から構成されている。ガス燃料供給手段
は、例えば、燃料タンクからの天然ガスが蓄圧室で蓄圧
され、該蓄圧室の天然ガスをガス燃料供給路１０を通じ
てガス燃料供給口２２から副室２に供給するものであ
る。This sub-chamber gas engine has a communication hole valve 5 arranged in the communication hole 12 for opening and closing the communication hole 12, a water injection nozzle 6 capable of injecting water into the sub chamber 2, and a sub chamber 2 in particular.
It has a gas fuel supply means capable of supplying a gas fuel to. The water injection nozzle 6 has multiple injection holes 17 for injecting water toward the inner wall of the sub chamber 2 on the opposite side of the communication hole 12 at the time of ignition and combustion in the sub chamber 2. The gas fuel supply means is composed of a gas fuel supply passage 10 that opens a gas fuel supply port 22 in the sub chamber 2, and a gas fuel valve 23 arranged in the gas fuel supply port 22. The gas fuel supply means stores, for example, natural gas from a fuel tank in a pressure accumulating chamber and supplies the natural gas in the pressure accumulating chamber to the sub chamber 2 from the gas fuel supply port 22 through the gas fuel supply passage 10.
【００１６】連絡孔弁５は、図２に示すように、連絡孔
１２を吸気行程中頃に閉鎖し、副室２にガス燃料を供給
した後の圧縮行程上死点近傍で開放するようにバルブタ
イミングが設定されている。また、シリンダヘッド７に
は、副室２にガス燃料を供給するガス燃料供給手段が設
けられている。ガス燃料供給手段は、副室２にガス燃料
供給口２２を開口するガス燃料供給路１０、及び該ガス
燃料供給口２２に配置されたガス燃料弁２３から構成さ
れており、該ガス燃料弁２３は連絡孔弁５が連絡孔１２
を閉鎖した後で圧縮行程で副室２へのガス燃料を供給
し、圧縮行程上死点前にガス燃料の副室２への供給が完
了するようにガス燃料の供給タイミングが設定されてい
る。また、圧縮行程上死点近傍で連絡孔１２が開放する
ことによって主室１から連絡孔１２を通って噴射２に高
温空気が流入し、副室２内で着火燃焼が起こるが、この
時、水噴射ノズル６からの副室２の連絡孔１２から離れ
た反対側の壁面或いは混合気に向けて水を噴射するよう
に水噴射タイミングが設定されている。As shown in FIG. 2, the communication hole valve 5 is a valve that closes the communication hole 12 in the middle of the intake stroke and opens it near the top dead center of the compression stroke after the gas fuel is supplied to the sub chamber 2. Timing is set. Further, the cylinder head 7 is provided with gas fuel supply means for supplying gas fuel to the sub chamber 2. The gas fuel supply means is composed of a gas fuel supply passage 10 that opens a gas fuel supply port 22 in the sub chamber 2 and a gas fuel valve 23 arranged at the gas fuel supply port 22. Is the communication hole valve 5 is the communication hole 12
The gas fuel supply timing is set so that the gas fuel is supplied to the sub chamber 2 in the compression stroke after closing the valve and the supply of the gas fuel to the sub chamber 2 is completed before the top dead center of the compression stroke. . Further, when the communication hole 12 is opened near the top dead center of the compression stroke, high temperature air flows from the main chamber 1 through the communication hole 12 into the injection 2 and ignition combustion occurs in the sub chamber 2. At this time, The water injection timing is set so as to inject water from the water injection nozzle 6 toward the wall surface or the air-fuel mixture on the opposite side away from the communication hole 12 of the sub chamber 2.
【００１７】この副室式ガスエンジンは、連絡孔弁５の
リフトタイミング、水噴射ノズル６からの副室２への水
噴射タイミング、及びガス燃料の供給タイミングが上記
のように設定される。従って、水噴射ノズル６から副室
２の上部の壁面１１及び混合気に向けて水が噴射される
と、噴射水は壁面等から熱を受けて直ちに気化して水蒸
気になって膨脹する。副室２の上部で水が水蒸気になっ
て膨脹することによって、副室２の下部で着火燃焼して
いる火炎、未燃混合気等のガスは水蒸気によって連絡孔
１２を通じて一気に押し出され、混合気の主室１への噴
出速度が速くなり、しかも副室２内の未燃混合気は噴き
出されて副室２に残留することがなく、主室１での燃焼
が速くなり、性能が向上する。また、副室２内に水を噴
射するため、燃焼ガスの温度が低下し、ＮＯX の発生を
抑制できる。In this sub-chamber gas engine, the lift timing of the communication hole valve 5, the water injection timing from the water injection nozzle 6 to the sub chamber 2, and the gas fuel supply timing are set as described above. Therefore, when water is jetted from the water jet nozzle 6 toward the upper wall surface 11 of the sub chamber 2 and the air-fuel mixture, the jet water receives heat from the wall surface and the like and immediately vaporizes to become water vapor and expand. When water becomes steam in the upper part of the sub-chamber 2 and expands, gases such as flame and unburned mixture that are ignited and burned in the lower part of the sub-chamber 2 are pushed out at once through the communication holes 12 by the steam, and the mixture The injection speed of the air into the main chamber 1 becomes faster, and the unburnt air-fuel mixture in the sub chamber 2 is not ejected and remains in the sub chamber 2, so that the combustion in the main chamber 1 becomes faster and the performance is improved. To do. Moreover, since water is injected into the sub chamber 2, the temperature of the combustion gas is lowered, and the generation of NO X can be suppressed.
【００１８】また、連絡孔１２の領域では、燃焼ガスで
高温になるため、連絡孔１２に配置した連絡孔弁５は高
温強度を有する耐熱性に優れた窒化ケイ素、炭化ケイ素
等のセラミックスから製作することが好ましいものであ
る。また、ピストン４は、例えば、耐熱性に優れた窒化
ケイ素等のセラミックスから成るピストンヘッドと、ピ
ストンヘッドにメタルフローによって固定したピストン
スカートから構成することができるものである。Further, in the region of the communication hole 12, since the combustion gas causes a high temperature, the communication hole valve 5 arranged in the communication hole 12 is made of ceramics such as silicon nitride and silicon carbide having high temperature strength and excellent heat resistance. Is preferable. The piston 4 can be composed of, for example, a piston head made of ceramics such as silicon nitride having excellent heat resistance and a piston skirt fixed to the piston head by a metal flow.
【００１９】この副室式ガスエンジンは、上記のように
構成されており、次のように作動する。この副室式ガス
エンジンは、吸入行程、圧縮行程、膨張行程及び排気行
程の４つの行程を順次繰り返すことによって作動される
ものである。この副室式ガスエンジンでは、通常どおり
に吸気行程で吸気弁８が開放し、排気行程で排気弁９が
開放するものである。まず、吸気行程で吸気弁８が開放
すると、吸気ポート１５から吸入空気が主室１内の導入
される。吸気行程中頃に連絡孔弁５が連絡孔１２を閉鎖
する。主室１と副室２とが遮断された状態で、吸気行程
終盤においてガス燃料弁２３を開放して副室２に天然ガ
スのガス燃料を供給し、圧縮行程中間では副室２へのガ
ス燃料の供給を完了する。次いで、圧縮行程で副室２へ
のガス燃料の噴射を完了して圧縮行程上死点付近で連絡
孔弁５が連絡孔１２を開放し、連絡孔１２を通じて高圧
縮で高温化した圧縮空気が主室１から副室２へ流入し、
該吸入空気はガス燃料と混合を促進して着火燃焼する。
この時、水噴射ノズル６から副室２の上部に水を噴射す
る。噴射された水は副室壁面及び高温空気から熱を受け
て直ちに気化して水蒸気になる。水が水蒸気になること
によって膨脹し、副室２内の火炎、未燃混合気等のガス
を後押しする状態で副室２から連絡孔１２を通じて主室
１へ噴き出すことになり、膨脹行程に移行する。The sub-chamber type gas engine is constructed as described above and operates as follows. This sub-chamber gas engine is operated by sequentially repeating four strokes of a suction stroke, a compression stroke, an expansion stroke and an exhaust stroke. In this sub-chamber gas engine, the intake valve 8 opens in the intake stroke and the exhaust valve 9 opens in the exhaust stroke as usual. First, when the intake valve 8 is opened in the intake stroke, intake air is introduced from the intake port 15 into the main chamber 1. The communication hole valve 5 closes the communication hole 12 in the middle of the intake stroke. With the main chamber 1 and the sub-chamber 2 disconnected, the gas fuel valve 23 is opened at the end of the intake stroke to supply natural gas gas fuel to the sub-chamber 2, and the gas to the sub-chamber 2 in the middle of the compression stroke. Complete the fuel supply. Next, in the compression stroke, the injection of the gas fuel into the sub-chamber 2 is completed, and the communication hole valve 5 opens the communication hole 12 near the top dead center of the compression stroke. From main chamber 1 to sub chamber 2,
The intake air promotes mixing with the gas fuel and is ignited and burned.
At this time, water is jetted from the water jet nozzle 6 to the upper portion of the sub chamber 2. The injected water receives heat from the wall surface of the sub chamber and the high temperature air, and immediately vaporizes into water vapor. When water becomes water vapor, it expands and blows out gas such as flame and unburned air-fuel mixture in the sub-chamber 2 from the sub-chamber 2 through the communication hole 12 to the main chamber 1 and shifts to the expansion stroke. To do.
【００２０】副室２の火炎、未燃混合気等のガスは、主
室１へ噴出し、主室１に存在する新気と混合を促進して
短期間に二次燃焼を完結する。この膨張行程では、連絡
孔１２の開放状態を維持して副室２から主室１へ火炎を
噴出させて仕事をさせ、吸気行程中盤付近で連絡孔１２
を連絡孔弁５で閉鎖する。従って、副室２内の火炎、未
燃混合気等のガスは水蒸気によって押し出され、副室２
内には未燃混合気は残存しない状態になり、主室１での
燃焼スピードがアップされ燃焼期間を短縮して熱効率が
向上し、しかも副室２に水を噴射して気化熱が奪われる
ので、燃焼ガス温度は低下し、ＮＯX の発生は抑制され
る。Gases such as flame and unburned air-fuel mixture in the sub-chamber 2 are ejected to the main chamber 1 to promote mixing with the fresh air existing in the main chamber 1 to complete the secondary combustion in a short period of time. In this expansion stroke, the communication hole 12 is maintained in an open state and a flame is ejected from the sub-chamber 2 to the main chamber 1 to perform work, and the communication hole 12 near the middle of the intake stroke.
Is closed by the communication hole valve 5. Therefore, gases such as flames and unburned air-fuel mixture in the sub chamber 2 are pushed out by the water vapor,
The unburned air-fuel mixture does not remain inside, the combustion speed in the main chamber 1 is increased, the combustion period is shortened to improve the thermal efficiency, and moreover, water is injected into the sub-chamber 2 to remove the heat of vaporization. Therefore, the combustion gas temperature is lowered, and the generation of NO X is suppressed.
【００２１】次に、この発明による副室式ガスエンジン
の別の実施例を、図３及び図４を参照して説明する。図
３はこの発明による副室式ガスエンジンの別の実施例を
示す断面図、及び図４は図３の副室式ガスエンジンにお
ける吸排気弁、連絡孔弁、水噴射ノズル、及びガス燃料
の供給のタイミングを示す説明図である。この実施例
は、上記実施例と比較して、連絡孔弁のバルブタイミン
グ及び水噴射のタイミングが異なると共に着火補助のた
めのスパークプラグを設けていること以外は、同一の構
成を有しているので、同一の部品には同一の符号を付
し、重複する説明は省略する。Next, another embodiment of the sub-chamber type gas engine according to the present invention will be described with reference to FIGS. FIG. 3 is a cross-sectional view showing another embodiment of the sub-chamber gas engine according to the present invention, and FIG. 4 is a sectional view showing an intake / exhaust valve, a communication hole valve, a water injection nozzle, and a gas fuel in the sub-chamber gas engine of FIG. It is explanatory drawing which shows the timing of supply. This embodiment has the same configuration as that of the above embodiment except that the valve timing of the communication hole valve and the timing of water injection are different and a spark plug for assisting ignition is provided. Therefore, the same reference numerals are given to the same components, and duplicated description will be omitted.
【００２２】この実施例では、特に、連絡孔弁５が圧縮
行程中頃でカム２４及びロッカアーム２７によってリタ
ーンスプリング２６に抗して押し下げられて連絡孔１２
が開放され、ガス燃料が自己着火しない程度の空気を主
室１から連絡孔１２を通じて副室２に導入される。主室
１から連絡孔１２を通じて副室２に空気が導入される
と、副室２内でガス燃料と空気との予混合気が生成され
ることになり、しかも副室２への空気の導入に伴って圧
縮行程中頃において水噴射ノズル６から水を副室２に噴
射し、予混合気の温度を低下させて予混合気の自己着火
以下の温度に維持し、圧縮行程上死点前に水噴射を止
め、均一な予混合気を副室２内に生成させる。次いで、
圧縮行程上死点近傍で、スパークプラグ２５を点火して
予混合気を着火燃焼させ、着火ミスを防止する。In this embodiment, in particular, the communication hole valve 5 is pushed down against the return spring 26 by the cam 24 and the rocker arm 27 in the middle of the compression stroke, and the communication hole 12 is formed.
Is opened, and air to the extent that gas fuel does not self-ignite is introduced from the main chamber 1 into the sub chamber 2 through the communication hole 12. When air is introduced from the main chamber 1 into the sub chamber 2 through the communication hole 12, a premixed gas fuel and air is generated in the sub chamber 2, and the air is introduced into the sub chamber 2. Accordingly, in the middle of the compression stroke, water is injected from the water injection nozzle 6 into the sub-chamber 2 to lower the temperature of the premixed air to maintain the temperature below the autoignition of the premixed air, before the top dead center of the compression stroke. The water injection is stopped and a uniform premixed gas is generated in the sub chamber 2. Then
In the vicinity of the top dead center of the compression stroke, the spark plug 25 is ignited to ignite and burn the premixed gas to prevent ignition mistakes.
【００２３】この実施例は、上記のように構成すること
によって、圧縮比を大きくすることができ、熱効率を向
上させることができ、スパークプラグ２５の着火補助に
よって混合気のリーン燃焼を可能にし、熱効率を向上さ
せることができる。また、水噴射ノズル６による副室２
への水噴射によって気化熱が奪われ、燃焼温度が低下す
るため、ＮＯX の発生を抑制すると共に熱効率を向上さ
せることができる。また、副室２への水噴射によって熱
エネルギーは水を気化させて水蒸気として膨脹させるの
で、膨脹行程において仕事をさせることができ、しかも
排気ガスエネルギーとして放出すれば、エネルギー回収
装置等で排気エネルギーを回収でき、燃費を低減でき
る。By configuring the embodiment as described above, the compression ratio can be increased, the thermal efficiency can be improved, and lean ignition of the air-fuel mixture can be made possible by the ignition assistance of the spark plug 25. The thermal efficiency can be improved. In addition, the sub chamber 2 by the water injection nozzle 6
Heat of vaporization is deprived by the water injection into, because the combustion temperature drops, it is possible to improve the thermal efficiency while suppressing the generation of NO X. In addition, since the heat energy vaporizes the water by the water injection into the sub chamber 2 and expands it as water vapor, it can perform work in the expansion stroke, and if it is released as exhaust gas energy, it can be exhausted by an energy recovery device or the like. Can be collected and fuel consumption can be reduced.
【００２４】[0024]
【発明の効果】この発明による副室式ガスエンジンは、
上記のように構成されており、次のような効果を有す
る。即ち、この副室式ガスエンジンは、副室と主室とを
連絡孔で連通し、連絡孔に連絡孔弁を配置すると共に、
副室にガス燃料供給手段と水噴射ノズルを設け、連絡孔
弁を吸気行程中頃で閉鎖し且つ圧縮行程上死点付近で開
放し、前記連絡孔を前記連絡孔弁が閉鎖した状態でガス
燃料供給手段で前記副室にガス燃料を供給し、前記副室
での着火燃焼時に水噴射ノズルから前記連絡孔の反対側
の前記副室の内壁に向けて水を噴射するように構成した
ので、副室に噴射された水は副室から受熱して気化して
水蒸気になる。水が水蒸気になることによって膨脹し、
水蒸気が火炎、未燃混合気等のガスを後押しする状態で
そのガスを押し出し、副室から連絡孔を通じて主室へ一
気に短時間に噴出し、副室内に未燃混合気が残留しなく
なり、噴出エネルギーで主室に存在する新気との混合が
促進され、主室での燃焼スピードが速くなり、燃焼期間
が短縮されて熱効率が上がり性能が向上する。しかも、
副室への水噴射によって燃焼ガス温度が低下してＮＯX
の発生が抑制される。The sub-chamber gas engine according to the present invention is
It is configured as described above and has the following effects. That is, in this sub-chamber gas engine, the sub-chamber and the main chamber are communicated with each other by a communication hole, and a communication hole valve is arranged in the communication hole.
A gas fuel supply means and a water injection nozzle are provided in the sub chamber, the communication hole valve is closed in the middle of the intake stroke and opened near the top dead center of the compression stroke, and the communication hole is closed with the communication hole valve. Since the gas fuel is supplied to the sub chamber by the supply means, and water is injected from the water injection nozzle toward the inner wall of the sub chamber on the opposite side of the communication hole at the time of ignition and combustion in the sub chamber, The water sprayed into the sub chamber receives heat from the sub chamber and is vaporized into water vapor. When water becomes steam, it expands,
The steam pushes out the gas such as flame and unburned air mixture, and then ejects it from the sub chamber through the communication hole to the main chamber in a short time. The energy promotes mixing with the fresh air existing in the main chamber, speeds up the combustion speed in the main chamber, shortens the combustion period, improves thermal efficiency, and improves performance. Moreover,
Combustion gas temperature by injecting water into the secondary chamber is reduced NO X
Is suppressed.
【００２５】又は、この副室式ガスエンジンは、副室と
主室とを連絡孔で連通し、連絡孔に連絡孔弁を配置する
と共に、副室にガス燃料供給手段、水噴射ノズル及びス
パークプラグを設け、連絡孔弁が吸気行程中頃で前記連
絡孔を閉鎖し、前記連絡孔が閉鎖した状態で前記副室に
ガス燃料供給手段でガス燃料を供給し、ガス燃料の副室
への供給が完了した後に圧縮行程中頃に僅かに前記連絡
孔を開放して副室内にガス燃料と空気との予混合気を生
成する。この時、ガス燃料の自己着火以下の温度に保持
するため水噴射ノズルから副室内に水を噴射して温度を
低下させ、圧縮行程上死点付近で連絡孔弁を全開し、連
絡孔を通じて主室から副室へ高温空気を導入すると共
に、スパークプラグを点火して混合気を着火燃焼させ
る。従って、この副室式ガスエンジンは、圧縮比を高め
ることができると共に自己着火がなく、ノッキングの発
生はなく、リーン燃焼が可能となり、熱効率を向上させ
ることができる。しかも、副室で予め均一な予混合気を
生成させておき、水噴射で自己着火以下の温度に保持
し、予混合気の着火をスパークプラグで補助するので、
着火ミスがなく、副室に水を噴射することによって燃焼
温度を低下させることができ、ＮＯX の発生を抑制で
き、熱効率を向上できる。また、この副室式ガスエンジ
ンは、吸入空気が主室内で高圧縮比になっても、前記主
室内にはガス燃料が自己着火する程には存在せず、しか
も水噴射で副室内の温度が低く保持されているので、予
混合気が自己着火することなく、ノッキングが発生する
ことがない。Alternatively, in this sub-chamber type gas engine, the sub-chamber and the main chamber are communicated with each other by a communication hole, a communication hole valve is arranged in the communication hole, and a gas fuel supply means, a water injection nozzle and a spark are provided in the sub-chamber. A plug is provided, and the communication hole valve closes the communication hole in the middle of the intake stroke, and in the state where the communication hole is closed, gas fuel is supplied to the sub chamber by the gas fuel supply means, and gas fuel is supplied to the sub chamber. After completion of the above, the communication hole is slightly opened in the middle of the compression stroke to generate a premixed gas of gas fuel and air in the sub chamber. At this time, in order to maintain the temperature below the gas fuel self-ignition, water is injected from the water injection nozzle into the sub chamber to lower the temperature, and the communication hole valve is fully opened near the top dead center of the compression stroke, and the main hole is opened through the communication hole. Hot air is introduced from the chamber to the sub chamber, and the spark plug is ignited to ignite and burn the air-fuel mixture. Therefore, in this sub-chamber gas engine, the compression ratio can be increased, self-ignition does not occur, knocking does not occur, lean combustion is possible, and thermal efficiency can be improved. Moreover, since a uniform premixed gas is generated in advance in the sub-chamber, the temperature is maintained below the self-ignition by water injection, and the ignition of the premixed gas is assisted by the spark plug.
Ignition miss no, the auxiliary chamber can lower the combustion temperature by injecting water, it is possible to suppress the generation of NO X, thereby improving the thermal efficiency. Further, in this sub-chamber type gas engine, even if the intake air has a high compression ratio in the main chamber, the gas fuel does not exist in the main chamber to the extent that it self-ignites, and the temperature in the sub-chamber is generated by water injection. Is kept low, the premixture does not self-ignite and knocking does not occur.
【図１】この発明による副室式ガスエンジンの一実施例
を示す断面図である。FIG. 1 is a sectional view showing an embodiment of a sub-chamber gas engine according to the present invention.
【図２】図１の副室式ガスエンジンにおける吸排気弁、
連絡孔弁、水噴射ノズル及びガス燃料の供給の各タイミ
ングを示す説明図である。2 is an intake / exhaust valve in the subchamber gas engine of FIG. 1,
It is explanatory drawing which shows each timing of a connection hole valve, a water injection nozzle, and supply of gas fuel.
【図３】この発明による副室式ガスエンジンの別の実施
例を示す断面図である。FIG. 3 is a sectional view showing another embodiment of the sub-chamber gas engine according to the present invention.
【図４】図３の副室式ガスエンジンにおける吸排気弁、
連絡孔弁、水噴射ノズル、スパークプラグ及び燃料噴射
の各タイミングを示す説明図である。4 is an intake / exhaust valve in the subchamber gas engine of FIG. 3;
It is explanatory drawing which shows each timing of a connection hole valve, a water injection nozzle, a spark plug, and fuel injection.
１ 主室 ２ 副室 ４ ピストン ５ 連絡孔弁 ６ 水噴射ノズル ７ シリンダヘッド ８ 吸気弁 ９ 排気弁 １０ ガス燃料供給路（ガス燃料供給手段） １２ 連絡孔 １５ 吸気ポート １６ 排気ポート １７ 多噴孔 ２０ シリンダ ２２ ガス燃料供給口（ガス燃料供給手段） ２３ ガス燃料弁（ガス燃料供給手段） ２５ スパークプラグ 1 Main Chamber 2 Sub Chamber 4 Piston 5 Communication Hole Valve 6 Water Injection Nozzle 7 Cylinder Head 8 Intake Valve 9 Exhaust Valve 10 Gas Fuel Supply Channel (Gas Fuel Supply Means) 12 Communication Hole 15 Intake Port 16 Exhaust Port 17 Multiple Injection Hole 20 Cylinder 22 Gas fuel supply port (gas fuel supply means) 23 Gas fuel valve (gas fuel supply means) 25 Spark plug
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ０２Ｂ 43/00 Ａ 47/02 Ｆ０２Ｍ 21/02 Ｌ 25/022 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location F02B 43/00 A 47/02 F02M 21/02 L 25/022
Claims (3)
ポート、シリンダ側に形成した主室、前記吸排気ポート
に配置した吸排気弁、前記副室と前記主室とを連通する
連絡孔、吸気行程中頃で前記連絡孔を閉鎖し且つ圧縮行
程上死点付近で開放する連絡孔弁、前記連絡孔を前記連
絡孔弁が閉鎖した状態で前記副室にガス燃料を供給する
ガス燃料供給手段、及び前記副室での着火燃焼時に前記
連絡孔の反対側の前記副室の内壁に向けて水を噴射する
水噴射ノズル、から構成したことを特徴とする副室式ガ
スエンジン。1. A sub chamber formed in a cylinder head and an intake / exhaust port, a main chamber formed on a cylinder side, an intake / exhaust valve arranged in the intake / exhaust port, a communication hole communicating the sub chamber with the main chamber, A communication hole valve that closes the communication hole in the middle of the intake stroke and opens near the top dead center of the compression stroke, and a gas fuel supply means that supplies gas fuel to the sub-chamber with the communication hole valve closed. And a water injection nozzle for injecting water toward the inner wall of the sub chamber on the side opposite to the communication hole at the time of ignition and combustion in the sub chamber.
ポート、シリンダ側に形成した主室、前記吸排気ポート
に配置した吸排気弁、前記副室と前記主室とを連通する
連絡孔、吸気行程中頃で前記連絡孔を閉鎖し且つ圧縮行
程中頃に僅かに前記連絡孔を開放して圧縮行程上死点付
近で全開する連絡孔弁、前記連絡孔が閉鎖した状態で前
記副室にガス燃料を供給するガス燃料供給手段、前記副
室内温度を着火温度以下に保持するため圧縮行程中頃か
ら前記副室内に水を噴射する水噴射ノズル、及び圧縮行
程上死点近くで混合気を着火させるため前記副室に設け
られたスパークプラグ、から構成したことを特徴とする
副室式ガスエンジン。2. A sub chamber formed in the cylinder head and an intake / exhaust port, a main chamber formed on the cylinder side, an intake / exhaust valve arranged in the intake / exhaust port, a communication hole communicating the sub chamber with the main chamber, A communication hole valve that closes the communication hole in the middle of the intake stroke and slightly opens the communication hole in the middle of the compression stroke to fully open near the top dead center of the compression stroke, and a gas in the sub chamber with the communication hole closed. Gas fuel supply means for supplying fuel, a water injection nozzle for injecting water into the sub chamber from the middle of the compression stroke to keep the temperature in the sub chamber below the ignition temperature, and ignite the air-fuel mixture near the top dead center of the compression stroke. Therefore, the sub-chamber gas engine is configured by a spark plug provided in the sub-chamber.
燃料供給口を開口するガス燃料供給路、及び該ガス燃料
供給口に配置されたガス燃料弁から構成されていること
を特徴とする請求項１又は２に記載の副室式ガスエンジ
ン。3. The gas fuel supply means comprises a gas fuel supply passage that opens a gas fuel supply port in the sub chamber, and a gas fuel valve disposed in the gas fuel supply port. The sub-chamber gas engine according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29252393A JP3379176B2 (en) | 1993-10-29 | 1993-10-29 | Subchamber gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29252393A JP3379176B2 (en) | 1993-10-29 | 1993-10-29 | Subchamber gas engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07127453A true JPH07127453A (en) | 1995-05-16 |
| JP3379176B2 JP3379176B2 (en) | 2003-02-17 |
Family
ID=17782914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29252393A Expired - Fee Related JP3379176B2 (en) | 1993-10-29 | 1993-10-29 | Subchamber gas engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3379176B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002088529A1 (en) * | 2001-04-25 | 2002-11-07 | Syouen Nakano | Engine |
| US7421982B2 (en) | 2004-06-10 | 2008-09-09 | Ichiro Kamimura | Independent combustion chamber-type internal combustion engine |
| AT511821B1 (en) * | 2012-02-21 | 2013-03-15 | Ge Jenbacher Gmbh & Co Ohg | Method for operating an internal combustion engine provided with at least one purged prechamber |
| JP2017089556A (en) * | 2015-11-12 | 2017-05-25 | マツダ株式会社 | Controller of engine |
| CN108757255A (en) * | 2018-05-29 | 2018-11-06 | 重庆隆鑫发动机有限公司 | Heavy fuel burning engine fuel injection equipment (FIE) and aero-engine |
| CN110145395A (en) * | 2019-05-28 | 2019-08-20 | 江苏大学 | A kind of jet vectoring igniter plug of rotary engine |
| WO2020102010A1 (en) * | 2018-11-13 | 2020-05-22 | Caterpillar Inc. | Prechamber fluid injection |
| CN112879145A (en) * | 2021-01-15 | 2021-06-01 | 湖南大兹动力科技有限公司 | Jet valve controlled precombustion chamber ignition internal combustion engine |
| CN114542315A (en) * | 2022-01-18 | 2022-05-27 | 北京理工大学 | Turbulent jet flow spontaneous combustion ignition engine |
-
1993
- 1993-10-29 JP JP29252393A patent/JP3379176B2/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002088529A1 (en) * | 2001-04-25 | 2002-11-07 | Syouen Nakano | Engine |
| US7421982B2 (en) | 2004-06-10 | 2008-09-09 | Ichiro Kamimura | Independent combustion chamber-type internal combustion engine |
| AT511821B1 (en) * | 2012-02-21 | 2013-03-15 | Ge Jenbacher Gmbh & Co Ohg | Method for operating an internal combustion engine provided with at least one purged prechamber |
| AT511821A4 (en) * | 2012-02-21 | 2013-03-15 | Ge Jenbacher Gmbh & Co Ohg | Method for operating an internal combustion engine provided with at least one purged prechamber |
| EP2631448A1 (en) | 2012-02-21 | 2013-08-28 | GE Jenbacher GmbH & Co OHG | Method for operating a combustion engine with at least one scoured pre-chamber |
| JP2017089556A (en) * | 2015-11-12 | 2017-05-25 | マツダ株式会社 | Controller of engine |
| CN108757255A (en) * | 2018-05-29 | 2018-11-06 | 重庆隆鑫发动机有限公司 | Heavy fuel burning engine fuel injection equipment (FIE) and aero-engine |
| WO2020102010A1 (en) * | 2018-11-13 | 2020-05-22 | Caterpillar Inc. | Prechamber fluid injection |
| US11047341B2 (en) | 2018-11-13 | 2021-06-29 | Caterpillar Inc. | Prechamber fluid injection |
| GB2594165A (en) * | 2018-11-13 | 2021-10-20 | Caterpillar Inc | Prechamber fluid injection |
| GB2594165B (en) * | 2018-11-13 | 2022-12-28 | Caterpillar Inc | Prechamber fluid injection |
| CN110145395A (en) * | 2019-05-28 | 2019-08-20 | 江苏大学 | A kind of jet vectoring igniter plug of rotary engine |
| CN110145395B (en) * | 2019-05-28 | 2021-02-12 | 江苏大学 | Jet control ignition plug of rotary engine |
| CN112879145A (en) * | 2021-01-15 | 2021-06-01 | 湖南大兹动力科技有限公司 | Jet valve controlled precombustion chamber ignition internal combustion engine |
| CN114542315A (en) * | 2022-01-18 | 2022-05-27 | 北京理工大学 | Turbulent jet flow spontaneous combustion ignition engine |
| CN114542315B (en) * | 2022-01-18 | 2023-02-21 | 北京理工大学 | Turbulent jet flow spontaneous combustion ignition engine |
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|---|---|
| JP3379176B2 (en) | 2003-02-17 |
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