JPH06330773A - Stabilizer for operation of gas engine - Google Patents
Stabilizer for operation of gas engineInfo
- Publication number
- JPH06330773A JPH06330773A JP5117334A JP11733493A JPH06330773A JP H06330773 A JPH06330773 A JP H06330773A JP 5117334 A JP5117334 A JP 5117334A JP 11733493 A JP11733493 A JP 11733493A JP H06330773 A JPH06330773 A JP H06330773A
- Authority
- JP
- Japan
- Prior art keywords
- air
- gas engine
- fuel
- fuel mixture
- mixture
- 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
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
(57)【要約】
【目的】 ガスエンジンに於いて、運転を安定化するこ
とを目的とするものである。
【構成】 燃料空気混合装置の下流側で、ガスエンジン
に前置した絞り弁の上流側の混合気供給系統に、前記ガ
スエンジンに於ける急激な負荷変動による混合気空燃比
の変動を避けるために、均一な空燃比の混合気を保有す
る混合気保持室を設置したことを特徴とするものであ
る。ガスエンジンに於いて、急激な負荷変動が生じた場
合、混合気保持室内には均一な空燃比の混合気が保持さ
れているので、かかる混合気保持室からガスエンジンの
要求する混合気量を瞬時に、且つ過不足なく供給するこ
とができる。このことによって、ガスエンジンの正常な
運転を持続することができる。
(57) [Summary] [Purpose] The purpose is to stabilize the operation of a gas engine. [Composition] To prevent the air-fuel ratio of the air-fuel mixture from fluctuating due to a sudden load change in the gas engine in the air-fuel mixture supply system on the downstream side of the fuel-air mixing device and on the upstream side of the throttle valve installed in front of the gas engine. In addition, the air-fuel mixture holding chamber that holds the air-fuel mixture with a uniform air-fuel ratio is installed. When a sudden load change occurs in a gas engine, the air-fuel mixture with a uniform air-fuel ratio is held in the air-fuel mixture holding chamber. It can be supplied instantly and without excess or deficiency. This allows normal operation of the gas engine to be maintained.
Description
【０００１】[0001]
【産業上の利用分野】本発明はガスエンジンの運転安定
化装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas engine operation stabilizing device.
【０００２】[0002]
【従来の技術】ガスエンジンを原動機とする発電装置
（以下ガスエンジン発電装置という）に於いて、負荷・
変化は混合気絞り弁の開度により、ガスエンジン出力を
変化させて対応している。この時、空燃比は、絞り弁の
開度により変化する吸入空気圧力を用いて燃料流量を制
御することにより安定化を図っている。2. Description of the Related Art In a power generator using a gas engine as a prime mover (hereinafter referred to as a gas engine power generator), a load
The change is handled by changing the gas engine output according to the opening of the mixture throttle valve. At this time, the air-fuel ratio is stabilized by controlling the fuel flow rate using the intake air pressure that changes depending on the opening of the throttle valve.
【０００３】[0003]
【発明が解決しようとする課題】前記した通り、空燃比
は常に一定になるように制御されているが、急激な負荷
変動が生じた場合は、その過渡時に於いて空燃比が大き
く変動する。この変動により、負荷追従性が悪化した
り、場合によってはエンジンストールに陥いることがあ
る。また、空燃比が変動した場合、三元触媒を用いて排
気浄化をしているエンジンに於いては、触媒作用が機能
しなくなるだけでなく、触媒劣化の要因にもなる。空燃
比の変動する原因は、吸入系の夫々の制御要素が質量を
持っているために起る追従遅れによるものであり、制御
方式の変更では解決できないものである。As described above, the air-fuel ratio is controlled so that it is always constant. However, when a sudden load change occurs, the air-fuel ratio greatly changes during the transition. Due to this fluctuation, the load following performance may be deteriorated, and in some cases, engine stall may occur. Further, when the air-fuel ratio fluctuates, in an engine that purifies exhaust gas using a three-way catalyst, not only the catalytic action does not work, but it also causes deterioration of the catalyst. The cause of the change in the air-fuel ratio is due to the tracking delay that occurs because each control element of the intake system has a mass, and cannot be solved by changing the control method.
【０００４】[0004]
【課題を解決するための手段】前記した課題を解決する
ために、本発明は、燃料空気混合装置の下流側で、ガス
エンジンに前置した絞り弁の上流側の混合気供給系統
に、前記ガスエンジンに於ける急激な負荷変動による混
合気空燃比の変動を避けるために、均一な空燃比の混合
気を保有する混合気保持室を設置したことを特徴とする
ものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a mixture supply system on the downstream side of a fuel-air mixing device, on the upstream side of a throttle valve installed in front of a gas engine. In order to avoid a change in the air-fuel ratio of the air-fuel mixture due to a sudden load change in the gas engine, the air-fuel mixture holding chamber holding the air-fuel mixture having a uniform air-fuel ratio is installed.
【０００５】[0005]
【作用】ガスエンジンに於いて、急激な負荷変動が生じ
た場合、混合気保持室内には均一な空燃比の混合気が保
持されているので、かかる混合気保持室からガスエンジ
ンの要求する混合気量を瞬時に、且つ過不足なく供給す
ることができる。このことによって、ガスエンジンの正
常な運転を持続することができる。ゆるやかな負荷変動
による空燃比の変化は、従前の如く、絞り弁の開度によ
り変化する吸入空気圧力を用いて燃料流量を制御するこ
とによって安定化する。In the gas engine, when a sudden load change occurs, the air-fuel mixture having a uniform air-fuel ratio is held in the air-fuel mixture holding chamber. It is possible to supply the amount of air instantly and without excess or deficiency. This allows normal operation of the gas engine to be maintained. The change in the air-fuel ratio due to the gradual change in load is stabilized by controlling the fuel flow rate using the intake air pressure that changes depending on the opening of the throttle valve, as in the past.
【０００６】[0006]
【実施例】符号１は混合気供給系統であって、２は該混
合気供給系統１から混合気の供給を受けるガスエンジン
を示す。３は混合気供給系統１に設置した燃料空気混合
装置を示し、４は燃料ガス供給系統であり、５は空気供
給系統である。前記燃料空気混合装置３の下流側で、前
記ガスエンジン２に前置した絞り弁６の上流側の前記混
合気供給系統１に、前記ガスエンジン２に於ける急激な
負荷変動による混合気空燃比の変動を避けるために、均
一な空燃比の混合気を保有する混合気保持室７を設置す
る。８排気系統を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 is a mixture supply system, and 2 is a gas engine which receives supply of the mixture from the mixture supply system 1. Reference numeral 3 denotes a fuel-air mixing device installed in the mixture supply system 1, 4 is a fuel gas supply system, and 5 is an air supply system. The air-fuel ratio of air-fuel mixture due to a sudden load change in the gas engine 2 is added to the air-fuel mixture supply system 1 downstream of the fuel-air mixing device 3 and upstream of the throttle valve 6 placed in front of the gas engine 2. In order to avoid the fluctuation of the air-fuel ratio, the air-fuel mixture holding chamber 7 holding the air-fuel mixture having a uniform air-fuel ratio is installed. 8 shows an exhaust system.
【０００７】ガス供給系統４から燃料ガスが、そして、
空気供給系統５から燃焼用空気が、燃料空気混合装置１
に導入されると、該燃料空気混合装置１に於いてガスと
空気は良好に混合されて絞り弁６を経てガスエンジン２
に供給される。かかる際、ガスエンジン２に於いて、急
激な負荷変動が生じても、混合気保持室７内には、均一
な空燃比の混合気が保持されているので、かかる混合気
保持室７から、ガスエンジン２の要求する混合気量を瞬
時に、且つ過不足なく供給することができる。このこと
によって、ガスエンジンの正常な運転を持続することが
できる。ゆるやかな負荷変動による空燃比の変化は、従
前の如く、絞り弁６の開度調節により変化する吸入空気
圧力を用いて燃料流量を制御することによって安定化す
ることができる。Fuel gas from the gas supply system 4, and
Combustion air is supplied from the air supply system 5 to the fuel-air mixing device 1
When introduced into the fuel-air mixing device 1, the gas and the air are mixed well in the fuel-air mixing device 1 and the gas engine 2 is passed through the throttle valve 6.
Is supplied to. At this time, even if a sudden load change occurs in the gas engine 2, since the air-fuel mixture having a uniform air-fuel ratio is held in the air-fuel mixture holding chamber 7, from the air-fuel mixture holding chamber 7, The air-fuel mixture amount required by the gas engine 2 can be supplied instantaneously and without excess or deficiency. This allows normal operation of the gas engine to be maintained. The change in the air-fuel ratio due to the gradual load change can be stabilized by controlling the fuel flow rate by using the intake air pressure that changes by adjusting the opening degree of the throttle valve 6 as in the past.
【０００８】[0008]
【発明の効果】本発明は以上の通り、急激な負荷変動時
に於いても、常に空燃比の一定した混合気が供給できる
ため、ガスエンジンの負荷追従性が向上し、円滑な運転
が確保できる上に、かかる空燃比の変動がなくなること
により、常に触媒作用を機能させることができ、排気浄
化効率を向上させることができる等の優れた効果があ
る。As described above, according to the present invention, since the air-fuel mixture having a constant air-fuel ratio can be always supplied even when the load fluctuates rapidly, the load followability of the gas engine is improved and smooth operation can be ensured. Further, by eliminating the fluctuation of the air-fuel ratio, there is an excellent effect that the catalytic action can be always functioned and the exhaust gas purification efficiency can be improved.
【図１】全体の系統的説明図である。FIG. 1 is an overall systematic explanatory diagram.
１ 混合気供給系統 ２ ガスエンジン ３ 燃料空気混合装置 ４ 燃料ガス供給系統 ５ 空気供給系統 ６ 絞り弁 ７ 混合気保持室 ８ 排気系統 1 Mixture Supply System 2 Gas Engine 3 Fuel Air Mixer 4 Fuel Gas Supply System 5 Air Supply System 6 Throttle Valve 7 Mixture Holding Chamber 8 Exhaust System
Claims (1)
ジンに前置した絞り弁の上流側の混合気供給系統に、前
記ガスエンジンに於ける急激な負荷変動による混合気空
燃比の変動を避けるために、均一な空燃比の混合気を保
有する混合気保持室を設置したことを特徴とするガスエ
ンジンの運転安定化装置。1. A mixture air-fuel ratio change caused by a sudden load change in the gas engine is provided in a mixture supply system downstream of the fuel-air mixing device and upstream of a throttle valve that is placed in front of the gas engine. In order to avoid this, a gas engine operation stabilizing device is characterized in that a mixture holding chamber that holds a mixture with a uniform air-fuel ratio is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11733493A JP3314889B2 (en) | 1993-05-19 | 1993-05-19 | Gas engine operation stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11733493A JP3314889B2 (en) | 1993-05-19 | 1993-05-19 | Gas engine operation stabilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06330773A true JPH06330773A (en) | 1994-11-29 |
| JP3314889B2 JP3314889B2 (en) | 2002-08-19 |
Family
ID=14709158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11733493A Expired - Fee Related JP3314889B2 (en) | 1993-05-19 | 1993-05-19 | Gas engine operation stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3314889B2 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS592925U (en) * | 1982-06-29 | 1984-01-10 | 小型ガス冷房技術研究組合 | Air supply system for 2-stroke gas engine |
| JPH03160112A (en) * | 1989-11-17 | 1991-07-10 | Yanmar Diesel Engine Co Ltd | Intake manifold of four-cycle two-cylinder gas engine |
| JPH04171258A (en) * | 1990-11-02 | 1992-06-18 | Nippon Carbureter Co Ltd | Fuel supplier for gas engine |
| JPH04284145A (en) * | 1991-03-12 | 1992-10-08 | Yanmar Diesel Engine Co Ltd | Fuel supply device for gas engine |
| JPH06185416A (en) * | 1992-12-17 | 1994-07-05 | Toyota Motor Corp | Pressure governor for vaporizer |
-
1993
- 1993-05-19 JP JP11733493A patent/JP3314889B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS592925U (en) * | 1982-06-29 | 1984-01-10 | 小型ガス冷房技術研究組合 | Air supply system for 2-stroke gas engine |
| JPH03160112A (en) * | 1989-11-17 | 1991-07-10 | Yanmar Diesel Engine Co Ltd | Intake manifold of four-cycle two-cylinder gas engine |
| JPH04171258A (en) * | 1990-11-02 | 1992-06-18 | Nippon Carbureter Co Ltd | Fuel supplier for gas engine |
| JPH04284145A (en) * | 1991-03-12 | 1992-10-08 | Yanmar Diesel Engine Co Ltd | Fuel supply device for gas engine |
| JPH06185416A (en) * | 1992-12-17 | 1994-07-05 | Toyota Motor Corp | Pressure governor for vaporizer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3314889B2 (en) | 2002-08-19 |
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