JPH06257539A - Large-size gas engine - Google Patents
Large-size gas engineInfo
- Publication number
- JPH06257539A JPH06257539A JP4523193A JP4523193A JPH06257539A JP H06257539 A JPH06257539 A JP H06257539A JP 4523193 A JP4523193 A JP 4523193A JP 4523193 A JP4523193 A JP 4523193A JP H06257539 A JPH06257539 A JP H06257539A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder group
- gas
- valve
- engine
- pressure air
- 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
-
- 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
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は圧縮空気をシリンダ内に
投入して始動する大型ガスエンジンに係わり、特に起動
時における未燃焼ガスの吹抜け量を減少させるための改
良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-sized gas engine which is started by injecting compressed air into a cylinder, and more particularly to an improvement for reducing the amount of unburned gas blown out at the time of starting.
【０００２】[0002]
【従来の技術】中、小型のガスエンジンにおいては、セ
ルモータやエアタービンによりフライホイールを直接回
転させて始動することが可能である。しかしながら、大
型のガスエンジンにおいては、その始動トルクの大きさ
から適切で安価な始動装置がなかった。このため、例え
ばＶ型機関の場合であれば、従来は片列のシリンダ群に
タイミングをとって圧縮空気を投入し、起動させてい
た。2. Description of the Related Art In a medium- or small-sized gas engine, a flywheel can be directly rotated and started by a cell motor or an air turbine. However, in a large-sized gas engine, there is no suitable and inexpensive starting device because of the magnitude of the starting torque. For this reason, for example, in the case of a V-type engine, conventionally, compressed air is introduced into the cylinder group in one row at a timing to start it.
【０００３】[0003]
【発明が解決しようとする課題】前述のように圧縮空気
の投入により起動する従来の大型ガスエンジンによれ
ば、空気投入側のシリンダ群では投入される空気量が吸
入される燃料ガスの量に比して大きく、空気過剰となり
着火することができない。このため、吸入された燃料ガ
スが未然のまま排出されるという問題があった。また、
再始動時に未燃焼ガスが煙道中爆発（バックファイア
ー）を起こす恐れがあるという問題もあった。As described above, according to the conventional large-sized gas engine that is started by the injection of compressed air, the amount of air injected in the cylinder group on the air injection side is the same as the amount of fuel gas taken in. In comparison, it is too large for air to ignite. Therefore, there is a problem that the inhaled fuel gas is discharged as it is. Also,
There was also the problem that unburned gas could cause an explosion (backfire) in the flue when restarting.
【０００４】本発明は、始動時に排出される未燃焼ガス
の量が少なく、再始動時に未燃焼ガスによる煙道中爆発
の恐れがない大型ガスエンジンを提供することを目的と
している。An object of the present invention is to provide a large-sized gas engine in which the amount of unburned gas discharged at the time of starting is small and there is no risk of explosion in the flue due to unburned gas at the time of restarting.
【０００５】[0005]
【課題を解決するための手段】本発明の大型ガスエンジ
ンは、一部のシリンダ群に圧縮空気を投入して始動する
大型ガスエンジンにおいて、前記一部のシリンダ群に燃
料ガスを供給するための配管に設けられた遮断弁と、前
記一部のシリンダ群に圧縮空気が投入されている際に前
記遮断弁を遮断する制御手段とを具備している。A large-sized gas engine of the present invention is a large-sized gas engine which starts by injecting compressed air into a part of a cylinder group and supplies fuel gas to the part of the cylinder group. A shutoff valve provided in the pipe and a control means for shutting off the shutoff valve when compressed air is being supplied to the partial cylinder group are provided.
【０００６】[0006]
【作用】一部のシリンダ群に始動用の圧縮空気が投入さ
れている間、制御手段は遮断弁を遮断して前記一部のシ
リンダ群に燃料ガスが供給されないようにする。The control means shuts off the shutoff valve so that the fuel gas is not supplied to the partial cylinder group while the starting compressed air is being supplied to the partial cylinder group.
【０００７】[0007]
【実施例】本発明の一実施例を図１を参照して説明す
る。この大型ガスエンジン１は、Ｖ型に配置されたＡ列
シリンダ群とＢ列シリンダ群を有している。Ｂ列シリン
ダ群には始動弁ＶＢを介して始動用高圧空気の配管２が
接続連通されている。そして機関始動時には始動弁ＶＢ
を開いてＢ列シリンダ群の各シリンダに始動用高圧空気
を供給するように構成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. This large-sized gas engine 1 has a group A cylinder group and a group B cylinder group arranged in a V shape. A piping 2 for starting high-pressure air is connected and communicated with the B-row cylinder group via a starting valve VB. When the engine is started, the start valve VB
Is opened to supply high-pressure starting air to each cylinder of the B-row cylinder group.
【０００８】燃料ガスの配管３は、直列に接続された２
個の安全弁Ｖ１，Ｖ２を経て二本の支管４，５に分岐
し、それぞれＡ列シリンダ群及びＢ列シリンダ群の各シ
リンダに接続されている。Ｂ列シリンダ群に接続されて
いる一方の支管４には、Ｂ列シリンダ群に接続される手
前の位置にガス遮断弁ＶＳが配置・接続されている。そ
して機関始動時にはガス遮断弁ＶＳを閉じて、始動用高
圧空気が投入されているＢ列シリンダ群には燃焼ガスが
供給されないように構成されている。The fuel gas pipe 3 is connected in series with 2
It branches into two branch pipes 4 and 5 via the individual safety valves V1 and V2, and is connected to each cylinder of the A-row cylinder group and the B-row cylinder group, respectively. A gas cutoff valve VS is arranged and connected to one branch pipe 4 connected to the B-row cylinder group at a position before being connected to the B-row cylinder group. When the engine is started, the gas shutoff valve VS is closed so that the combustion gas is not supplied to the B-row cylinder group into which the high-pressure starting air is introduced.
【０００９】前述した始動弁ＶＢ、安全弁Ｖ１，Ｖ２及
びガス遮断弁ＶＳには、それぞれ開閉操作用の弁駆動部
５が設けられている。各弁駆動部５は操作用空気系６に
それぞれ接続されており、該操作用空気系６は制御手段
７からの指令に応じて各弁の各弁駆動部５に低圧空気を
供給するように構成されている。The start valve VB, the safety valves V1 and V2, and the gas shutoff valve VS described above are each provided with a valve drive section 5 for opening and closing. Each valve drive unit 5 is connected to an operation air system 6, and the operation air system 6 supplies low pressure air to each valve drive unit 5 of each valve in response to a command from the control means 7. It is configured.
【００１０】即ち機関の始動時において、この制御手段
７は始動信号を出力することにより始動弁ＶＢを開いて
Ｂ列シリンダ群に高圧空気を送り、続けて安全弁Ｖ１，
Ｖ２を開いて燃料ガスの供給を行なう。そして少なくと
も始動弁ＶＢが開いている間はガス遮断弁ＶＳを閉止
し、始動弁ＶＢが閉止された時にはガス遮断弁ＶＳが開
かれるように制御を行なう。また、制御手段７による各
弁の開閉等のタイミングは、始動後の時間か、又は機関
の回転数によって適宜に定められ、機関の運転状態がク
ランキング、アイドリングから起動へと円滑に移行でき
るように構成されている。That is, when the engine is started, the control means 7 outputs a start signal to open the start valve VB to send high-pressure air to the group B cylinders, and then the safety valve V1 ,.
V2 is opened to supply the fuel gas. The gas shutoff valve VS is closed at least while the start valve VB is open, and the gas shutoff valve VS is opened when the start valve VB is closed. Further, the timing of opening and closing each valve by the control means 7 is appropriately determined depending on the time after the start or the engine speed, so that the operating state of the engine can be smoothly shifted from cranking and idling to starting. Is configured.
【００１１】次に、以上の構成になる大型ガスエンジン
の始動時の作用について説明する。制御手段７からの始
動信号により、操作用空気系６は始動弁ＶＢの弁駆動部
５に低圧空気を送り、該始動弁ＶＢを開く。これにより
始動用高圧空気がＢ列シリンダ群に所定のタイミングで
供給され、クランキングが始まる。また、前記制御手段
７の始動信号により、ガス遮断弁ＶＳが閉止される。Next, the operation at the time of starting the large-sized gas engine having the above structure will be described. In response to a start signal from the control means 7, the operating air system 6 sends low-pressure air to the valve drive section 5 of the start valve VB to open the start valve VB. As a result, high-pressure starting air is supplied to the group B cylinders at a predetermined timing, and cranking starts. Further, the gas shutoff valve VS is closed by the start signal of the control means 7.
【００１２】次に、制御手段７が安全弁Ｖ１，Ｖ２を開
き、機関に燃料ガスを供給する。燃料ガスはＡ列シリン
ダ群のみに送られ、始動用高圧空気が供給されているＢ
列シリンダ群には供給されない。従って、始動用高圧空
気で希薄化された燃料が未燃のまま機関外に排出される
という不都合は生じない。Next, the control means 7 opens the safety valves V1 and V2 to supply the fuel gas to the engine. Fuel gas is sent only to the A group of cylinders, and high pressure air for starting is supplied to B
It is not supplied to the row cylinder group. Therefore, there is no inconvenience that the fuel diluted with the high-pressure starting air is discharged to the outside of the engine without being burned.
【００１３】Ａ列シリンダ群で着火し、機関が自立運転
可能な回転に達すると、制御手段はＡ列側の図示しない
始動弁ＶＡを閉止し、始動用高圧空気の供給を遮断す
る。前記始動弁ＶＢの閉止後、ガス遮断弁ＶＳが開かれ
る。これによってＢ列シリンダ群にも燃料ガスが供給さ
れ、着火し始める。When the group A cylinders are ignited and the engine reaches a rotation speed capable of self-sustaining operation, the control means closes the unillustrated starting valve VA on the side A to shut off the supply of the starting high pressure air. After closing the start valve VB, the gas cutoff valve VS is opened. As a result, fuel gas is also supplied to the group B cylinders, and ignition is started.
【００１４】このように、制御手段７は始動弁ＶＢを開
いている間はガス遮断弁ＶＳを閉止し、始動弁ＶＢを閉
じた後にガス遮断弁ＶＳを開いている。このような始動
弁ＶＢの制御状態に応じたガス遮断弁ＶＳの制御は、制
御手段７の出力する始動信号と、該始動信号出力後にタ
イマーによって計測する時間又は機関回転数を利用して
行なう。As described above, the control means 7 closes the gas cutoff valve VS while opening the start valve VB, and opens the gas cutoff valve VS after closing the start valve VB. The control of the gas cutoff valve VS according to the control state of the start valve VB is performed by using the start signal output by the control means 7 and the time measured by the timer after the start signal is output or the engine speed.
【００１５】即ち、Ａ列シリンダ群が着火し、機関があ
る回転数まで加速した場合には、始動弁ＶＢを閉じると
ともにガス遮断弁ＶＳを開く。これによってＢ列シリン
ダ群にも燃料ガスが供給されて着火し始め、機関が起動
する。That is, when the group A cylinders are ignited and the engine accelerates to a certain rotational speed, the start valve VB is closed and the gas cutoff valve VS is opened. As a result, the fuel gas is also supplied to the B-row cylinder group to start ignition and the engine is started.
【００１６】[0016]
【発明の効果】本発明の大型ガスエンジンによれば、始
動時には着火し得ない高圧空気投入側シリンダ群へのガ
ス供給を完全に遮断するので、未燃焼ガスの放出を大幅
に減少させることができる。また、再始動時に未燃焼ガ
スによる煙道中爆発（バックファイヤー）の恐れがなく
なる。According to the large-sized gas engine of the present invention, the gas supply to the high pressure air charging side cylinder group which cannot be ignited at the time of starting is completely cut off, so that the release of unburned gas can be greatly reduced. it can. Also, there is no fear of explosion in the flue (backfire) due to unburned gas when restarting.
【図１】本発明の一実施例の基本的構成を示す斜視図で
ある。FIG. 1 is a perspective view showing a basic configuration of an embodiment of the present invention.
１ 大型ガスエンジン ３ 燃料ガスの配管 ４ 燃料ガスの配管の支管 ７ 制御手段 ＶＳ ガス遮断弁 1 Large Gas Engine 3 Fuel Gas Pipe 4 Fuel Gas Pipe Branch 7 Control Means VS Gas Cutoff Valve
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 長幸 東京都大田区蒲田本町１−３−20 株式会 社新潟鉄工所原動機事業部ガス原動機技術 部内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nagayuki Sato 1-3-20 Kamatahonmachi, Ota-ku, Tokyo Niigata Iron Works Engine Division Gas Engine Engineering Department
Claims (1)
始動する大型ガスエンジンにおいて、前記一部のシリン
ダ群に燃料ガスを供給するための配管に設けられた遮断
弁と、前記一部のシリンダ群に圧縮空気が投入されてい
る際に前記遮断弁を遮断する制御手段とを具備する大型
ガスエンジン。1. A large-scale gas engine that starts by injecting compressed air into a part of a group of cylinders, and a cutoff valve provided in a pipe for supplying a fuel gas to the part of the group of cylinders, and the part. Large gas engine, comprising: a control unit that shuts off the shutoff valve when compressed air is being introduced into the cylinder group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5045231A JP2576753B2 (en) | 1993-03-05 | 1993-03-05 | Large gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5045231A JP2576753B2 (en) | 1993-03-05 | 1993-03-05 | Large gas engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06257539A true JPH06257539A (en) | 1994-09-13 |
| JP2576753B2 JP2576753B2 (en) | 1997-01-29 |
Family
ID=12713491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5045231A Expired - Lifetime JP2576753B2 (en) | 1993-03-05 | 1993-03-05 | Large gas engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2576753B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010128127A2 (en) | 2009-05-07 | 2010-11-11 | Avl List Gmbh | Method for starting an internal combustion engine operating with combustible gas |
| WO2010128125A1 (en) | 2009-05-07 | 2010-11-11 | Avl List Gmbh | Method for starting an internal combustion engine operating with combustible gas |
| WO2014156278A1 (en) * | 2013-03-29 | 2014-10-02 | 三菱重工業株式会社 | Starting device for gas internal combustion engine |
| CN105569858A (en) * | 2014-11-05 | 2016-05-11 | 曼柴油机和涡轮机欧洲股份公司 | Method for starting a gas engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62291467A (en) * | 1986-06-11 | 1987-12-18 | Yanmar Diesel Engine Co Ltd | Starting device for gas valve type large gas engine |
-
1993
- 1993-03-05 JP JP5045231A patent/JP2576753B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62291467A (en) * | 1986-06-11 | 1987-12-18 | Yanmar Diesel Engine Co Ltd | Starting device for gas valve type large gas engine |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010128125A1 (en) | 2009-05-07 | 2010-11-11 | Avl List Gmbh | Method for starting an internal combustion engine operating with combustible gas |
| WO2010128127A3 (en) * | 2009-05-07 | 2011-01-13 | Avl List Gmbh | Method for starting an internal combustion engine operating with combustible gas |
| WO2010128127A2 (en) | 2009-05-07 | 2010-11-11 | Avl List Gmbh | Method for starting an internal combustion engine operating with combustible gas |
| CN105190022B (en) * | 2013-03-29 | 2017-06-23 | 三菱重工业株式会社 | The starting device of gas internal-combustion engine |
| WO2014156278A1 (en) * | 2013-03-29 | 2014-10-02 | 三菱重工業株式会社 | Starting device for gas internal combustion engine |
| JP2014199005A (en) * | 2013-03-29 | 2014-10-23 | 三菱重工業株式会社 | Gas internal combustion engine starter |
| CN105190022A (en) * | 2013-03-29 | 2015-12-23 | 三菱重工业株式会社 | Starting device for gas internal combustion engine |
| US9920729B2 (en) | 2013-03-29 | 2018-03-20 | Mitsubishi Heavy Industries, Ltd. | Starting device for gas internal combustion engine |
| CN105569858A (en) * | 2014-11-05 | 2016-05-11 | 曼柴油机和涡轮机欧洲股份公司 | Method for starting a gas engine |
| JP2016089841A (en) * | 2014-11-05 | 2016-05-23 | マン・ディーゼル・アンド・ターボ・エスイー | Method for activating gas engine |
| KR20160053802A (en) * | 2014-11-05 | 2016-05-13 | 만 디젤 앤 터보 에스이 | Method for starting a gas engine |
| DE102014016418A1 (en) * | 2014-11-05 | 2016-05-12 | Man Diesel & Turbo Se | Method for starting a gas engine |
| CN105569858B (en) * | 2014-11-05 | 2020-12-08 | 曼恩能源方案有限公司 | Method for starting gas engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2576753B2 (en) | 1997-01-29 |
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