JPS63277847A - Spark ignition cylinder injection gas engine - Google Patents
Spark ignition cylinder injection gas engineInfo
- Publication number
- JPS63277847A JPS63277847A JP62108939A JP10893987A JPS63277847A JP S63277847 A JPS63277847 A JP S63277847A JP 62108939 A JP62108939 A JP 62108939A JP 10893987 A JP10893987 A JP 10893987A JP S63277847 A JPS63277847 A JP S63277847A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- pilot
- injection valve
- ignition plug
- small pocket
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 34
- 239000007924 injection Substances 0.000 title claims abstract description 34
- 238000002485 combustion reaction Methods 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims description 53
- 239000002737 fuel gas Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0275—Injectors for in-cylinder direct injection, e.g. injector combined with spark plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
- F02D19/021—Control of components of the fuel supply system
- F02D19/023—Control of components of the fuel supply system to adjust the fuel mass or volume flow
- F02D19/024—Control of components of the fuel supply system to adjust the fuel mass or volume flow by controlling fuel injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0284—Arrangement of multiple injectors or fuel-air mixers per combustion chamber
-
- 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
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はシリンダ内噴射ガスエンジンに関する。[Detailed description of the invention] [Industrial application field] The present invention relates to an in-cylinder injection gas engine.
低速大形エンジンでは従来火花点火のシリンダ内噴射式
ガソリンエンジンはつくられていないが、中速エンジン
では第３〜４図に示すように火花点火シリンダ内噴射ガ
スエンジンがつくられている。Conventionally, spark ignition in-cylinder injection gasoline engines have not been made for low-speed large engines, but spark-ignition in-cylinder injection gas engines have been made for medium-speed engines, as shown in Figures 3 and 4.
このエンジンでは圧縮路りの上死点付近で、シリンダヘ
ッド１０１、シリンダライナ１０２、ピストン１０３に
より形成される燃焼室内に、ガス噴射弁１０６から噴射
されたガスジェット１０７に直接点火栓１０８で点火せ
しめて、燃焼を開始させ軸出力を得ている。なお、１０
４は排気管、１０５は排気弁、１０９は吸気弁である。In this engine, a gas jet 107 injected from a gas injection valve 106 is directly ignited by an ignition plug 108 into a combustion chamber formed by a cylinder head 101, a cylinder liner 102, and a piston 103 near the top dead center of the compression path. Then, combustion is started and shaft output is obtained. In addition, 10
4 is an exhaust pipe, 105 is an exhaust valve, and 109 is an intake valve.
シリンダ内ガス噴射エンジンでは比較的高圧縮比に構成
でき、良好な熱効率と高出力を維持することができる。In-cylinder gas injection engines can be configured with relatively high compression ratios and can maintain good thermal efficiency and high output.
しかし点火栓は直接エネルギの高いガスジェットの火炎
にさらされておシ、さらに確実な着火を確保するため、
点火栓が燃焼室内に突出しているので、熱負荷が大きく
、早期に点火栓が損耗するという不具合があり、性能低
下を引き起すのみでなく、ミスファイヤやバツクファイ
ヤなどの危険性がある。However, the ignition plug is directly exposed to the flame of a high-energy gas jet, and in order to ensure more reliable ignition,
Since the ignition plug protrudes into the combustion chamber, there is a problem that the heat load is large and the ignition plug wears out prematurely, which not only causes a drop in performance but also poses a risk of misfire or backfire.
本発明の目的は前記従来装置の問題点を解消し、ガス燃
料への着火が確実に行われ、しかも点火栓に対する熱負
荷が低くて電極の損耗が少ない火花点火シリンダ内噴射
ガスエンジンを提供するにある。An object of the present invention is to solve the problems of the conventional device and provide a spark ignition in-cylinder injection gas engine in which gas fuel is reliably ignited, the heat load on the ignition plug is low, and the electrodes are less worn out. It is in.
本発明はシリンダ内に燃料ガスを直接噴射するガスエン
ジンにおいて、シリンダカバーの燃焼室面に凹設された
小ポケットと、該小ポケット内に配設された小パイロッ
ト噴射弁と、該小パイロット噴射弁より噴出するノやイ
ロットガスに着火させる点火栓とを有してなり、前記小
ポケット内で少量のノセイロットガスに点火して、該点
火パイロットガスの燃焼火炎を燃焼室内へ噴出させて該
・ぐイロットガス火炎により主ガスジェットに点火させ
ることを特徴としている。The present invention relates to a gas engine that directly injects fuel gas into a cylinder, and includes a small pocket recessed in the combustion chamber surface of a cylinder cover, a small pilot injection valve disposed in the small pocket, and a small pilot injection valve disposed in the small pocket. It has an ignition plug for igniting pilot gas ejected from the valve, ignites a small amount of pilot gas in the small pocket, and blows out the combustion flame of the ignition pilot gas into the combustion chamber.・It is characterized by igniting the main gas jet with a pilot gas flame.
小ポケット内の点火栓でパイロットガスジにットに点火
するさせることにより、点火栓は主ガスジェット火炎に
さらされることがなくなシ、また直接点火栓は主燃焼室
内に突出していないので、点火燃焼後の燃焼室内の高温
ガスの流れにも直接さらされることがなくなシ点火栓の
損耗や性能低下を防止することができる。By igniting the pilot gas directly with the ignition plug in the small pocket, the ignition plug is not exposed to the main gas jet flame, and since the ignition plug does not directly protrude into the main combustion chamber, Since the ignition plug is not directly exposed to the flow of high-temperature gas in the combustion chamber after ignition combustion, it is possible to prevent the ignition plug from being worn out or from deteriorating in performance.
以下第１〜２図を参照し本発明の一実施例について説明
する。第１図は大型低速火花点火シリンダ内噴射ガスエ
ンジンの燃焼室廻シの縦断面図、第２図は第１図の下面
図である。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a longitudinal sectional view of a combustion chamber of a large, low-speed spark ignition cylinder injection gas engine, and FIG. 2 is a bottom view of FIG. 1.
０１はピストン、０２はシリンダカバー、ｏ３はシリン
ダヘッド、０４は排気ポート、ｏ５は排気弁、０６は主
ガスジェット噴射弁、ｏ７は主ガスジェットを示す。１
０は本発明にょシリンダカバー０３に凹設した小ポケッ
トで、この小ポケット内にはパイロットガス噴射弁ｏ９
と着火に最適位置に点火栓０８が設けられ、１１はパイ
ロットガスジェットを示している。本実施例のガスエン
ジンは、いわゆるサイドインジェクション燃焼方式の場
合を示しておシ、第１〜２図は主ガスジェット噴射弁０
６、パイロットガス噴射弁ｏ９、点火栓０８がそれぞれ
２本ずつの場合を示している。しかし図示はしないが主
ガスジェット噴射弁０６、パイロット噴射弁０９、点火
栓０８、それぞれがｎ本の場合、あるいはパイロットガ
ス噴射弁０９と点火栓０８が主ガスジェット噴射弁０６
よりも数が少ない場合も含んでいる。さらに従来の中央
噴射のガスエンジンの場合において、点火栓位置に小ポ
ケット１０を凹設し、その中にパイロットガス噴射弁０
９と点火栓０８を設けたものも含んでいる。01 is a piston, 02 is a cylinder cover, o3 is a cylinder head, 04 is an exhaust port, o5 is an exhaust valve, 06 is a main gas jet injection valve, and o7 is a main gas jet. 1
0 is a small pocket recessed in the cylinder cover 03 according to the present invention, and inside this small pocket is a pilot gas injection valve 09.
An ignition plug 08 is provided at the optimum position for ignition, and 11 indicates a pilot gas jet. The gas engine of this embodiment shows the case of the so-called side injection combustion method, and Figs. 1 and 2 show the main gas jet injection valve 0.
6. The case where there are two pilot gas injection valves o9 and two spark plugs 08 is shown. However, although not shown, in the case where there are n pieces each of the main gas jet injection valve 06, the pilot injection valve 09, and the spark plug 08, or when the pilot gas injection valve 09 and the spark plug 08 are the main gas jet injection valve 06,
This also includes cases where the number is smaller than . Furthermore, in the case of a conventional central injection gas engine, a small pocket 10 is recessed at the ignition plug position, and a pilot gas injection valve 0 is inserted into the small pocket 10.
9 and a spark plug 08 are also included.
次に前記実施例の作用について説明する。シリンダヘッ
ド０３の燃焼室面に凹設された小ポケット１０内のパイ
ロットガス噴射弁０９より、少量のガス燃料に対し着火
に最適位置に設けられた点火栓により着火すると、その
燃焼火炎が小ポケット１０よシ噴出し、主ガス噴射弁０
９より噴出する主ガスジェット０７に容易に確実に着火
させることができる。なお点火栓０８は小ポケット１０
内に凹設されているので、高温の燃焼ガスの流れに直接
さらされることがなくなシ熱負荷が減少し。Next, the operation of the above embodiment will be explained. When the pilot gas injection valve 09 in the small pocket 10 recessed in the combustion chamber surface of the cylinder head 03 ignites a small amount of gas fuel with the ignition plug located at the optimum position for ignition, the combustion flame spreads into the small pocket. 10 yoshi spout, main gas injection valve 0
The main gas jet 07 ejected from the gas jet 9 can be easily and reliably ignited. In addition, the spark plug 08 has a small pocket 10.
Since it is recessed inside, it is not directly exposed to the flow of high-temperature combustion gas, reducing the heat load.
早期に点火栓が損耗することはなくその寿命の延長をは
かることができる。The spark plug will not wear out prematurely, and its lifespan can be extended.
本発明の火花点火シリンダ噴射式ガスエンジンは、シリ
ンダカバーに凹設した小ポケット内にパイロットガス噴
射弁と点火栓を配設し、この点火栓で噴射したパイロッ
トガスに小ポケット内で点火し、その・臂イロットガス
ジェット火炎を燃焼室内へ噴出させ、主ガスジェットに
点火させる。従って点火栓の電極は直接燃焼室内に突設
されて居らず、点火燃焼した高温ガスの流れに電極部が
直接さらされることがないので、点火栓への熱負荷が低
下し、点火栓寿命の延長をはかることができる。The spark ignition cylinder injection type gas engine of the present invention has a pilot gas injection valve and a spark plug arranged in a small pocket recessed in a cylinder cover, and pilot gas injected by the spark plug is ignited in the small pocket. The gas jet flame is ejected into the combustion chamber and the main gas jet is ignited. Therefore, the electrode of the ignition plug does not protrude directly into the combustion chamber, and the electrode part is not directly exposed to the flow of ignited and combusted high-temperature gas, reducing the thermal load on the ignition plug and extending the life of the ignition plug. It can be extended.
第１図は本発明に係る大形低速火花点火シリンダ噴射ガ
スエンジンの要部断面図、第２図は第１図の下面図、第
３図及び第４図は従来例の第１図及び第２図応当図であ
る。
０６・・・主ガス噴射弁、ｏ７・・・主ガスジェット、
０８・・・点火栓、０９・・・パイロットガス噴射弁、
１０・・・小ポケット、１１・・・パイロットガスジェ
ット。
第３図
＋Ｌ＋１FIG. 1 is a cross-sectional view of a main part of a large-sized low-speed spark ignition cylinder injection gas engine according to the present invention, FIG. 2 is a bottom view of FIG. 1, and FIGS. Figure 2 is a corresponding diagram. 06... Main gas injection valve, o7... Main gas jet,
08... Spark plug, 09... Pilot gas injection valve,
10...Small pocket, 11...Pilot gas jet. Figure 3 +L+1
Claims (1)
いて、シリンダカバーの燃焼室面に設けられた小ポケッ
トと、該小ポケット内に配設された小パイロット噴射弁
と、該小パイロット噴射弁より噴出するパイロットガス
に着火させる点火栓とを有してなり、前記小ポケット内
で少量のパイロットガスに点火し、このパイロットガス
の燃焼火炎を燃焼室内へ噴出させてそのパイロットガス
により主ガスジェットに点火させることを特徴とする火
花点火シリンダ噴射ガスエンジン。In a gas engine that directly injects fuel gas into the cylinder, there is a small pocket provided on the combustion chamber surface of the cylinder cover, a small pilot injection valve arranged in the small pocket, and fuel gas is injected from the small pilot injection valve. and a spark plug for igniting pilot gas, igniting a small amount of pilot gas in the small pocket, ejecting the combustion flame of this pilot gas into the combustion chamber, and igniting the main gas jet with the pilot gas. A spark ignition cylinder injection gas engine characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62108939A JPH076456B2 (en) | 1987-05-06 | 1987-05-06 | Spark ignition cylinder injection gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62108939A JPH076456B2 (en) | 1987-05-06 | 1987-05-06 | Spark ignition cylinder injection gas engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63277847A true JPS63277847A (en) | 1988-11-15 |
| JPH076456B2 JPH076456B2 (en) | 1995-01-30 |
Family
ID=14497481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62108939A Expired - Fee Related JPH076456B2 (en) | 1987-05-06 | 1987-05-06 | Spark ignition cylinder injection gas engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH076456B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0760424A2 (en) * | 1995-08-18 | 1997-03-05 | Orbital Engine Company Proprietary Limited | Gaseous fuel direct injection system for internal combustion engines |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61140123U (en) * | 1985-02-22 | 1986-08-30 |
-
1987
- 1987-05-06 JP JP62108939A patent/JPH076456B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61140123U (en) * | 1985-02-22 | 1986-08-30 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0760424A2 (en) * | 1995-08-18 | 1997-03-05 | Orbital Engine Company Proprietary Limited | Gaseous fuel direct injection system for internal combustion engines |
| EP0760424A3 (en) * | 1995-08-18 | 1997-11-05 | Orbital Engine Company Proprietary Limited | Gaseous fuel direct injection system for internal combustion engines |
| US5941210A (en) * | 1995-08-18 | 1999-08-24 | Orbital Engine Company (Australia) Pty Limited | Gaseous fuel direct injection system for internal combustion engines |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH076456B2 (en) | 1995-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |