JP3272622B2 - Gas / water mixed injection valve - Google Patents
Gas / water mixed injection valveInfo
- Publication number
- JP3272622B2 JP3272622B2 JP33634896A JP33634896A JP3272622B2 JP 3272622 B2 JP3272622 B2 JP 3272622B2 JP 33634896 A JP33634896 A JP 33634896A JP 33634896 A JP33634896 A JP 33634896A JP 3272622 B2 JP3272622 B2 JP 3272622B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- water
- injection valve
- injection
- valve
- 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.)
- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 title claims description 47
- 239000007924 injection Substances 0.000 title claims description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 35
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000010720 hydraulic oil Substances 0.000 description 21
- 239000003921 oil Substances 0.000 description 7
- 239000000446 fuel Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は内燃式ガスエンジン
に適用されるガス噴射弁に係り、特に水粒子を噴孔より
噴出されたガス中に分布させるガス・水混合噴射弁に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas injection valve applied to an internal combustion type gas engine, and more particularly to a gas / water mixture injection valve for distributing water particles in gas ejected from an injection hole.
【０００２】[0002]
【従来の技術】従来用いられている内燃式ガスエンジン
に適用されるガス噴射弁の概略構成は、図２に示すよう
に、ガス噴射弁本体１の中央軸線上に針弁２が進退自在
に挿設され、背面側より付勢されたコイルバネ４で噴孔
６基端側に設けた針弁シートに押し付けられている。尚
図中３はガス供給継手、５はガス供給継手３より噴孔６
へガスを導くガス通路、７は作動油供給継手、８は作動
油排出継手、９は作動油通路、１０はコイルバネ４のバ
ネ圧調整ねじである。針弁２の開閉は作動油供給継手７
から作動油通路９を通って針弁中間部の受油部９ａに供
給され、該受油部９ａの油圧力が針弁２の中間に設けら
れた面積差の部分に作用して針弁２を押し上げ、これに
よりガスはガス供給継手３からガス通路５を通り、針弁
２の開弁時に噴孔６を通じて噴出口６ａから噴射され
る。一方針弁２の閉弁は作動油排出継手８より作動油を
逃し外部に放出されることにより、コイルバネ４のバネ
力が打ち勝って行なわれる。2. Description of the Related Art As shown in FIG. 2, a schematic configuration of a conventional gas injection valve applied to an internal combustion type gas engine is such that a needle valve 2 can be freely advanced and retracted on a central axis of a gas injection valve body 1. It is inserted and is pressed against a needle valve seat provided on the base end side of the injection hole 6 by a coil spring 4 urged from the back side. In the drawing, reference numeral 3 denotes a gas supply joint, and reference numeral 5 denotes an injection hole 6 from the gas supply joint 3.
7 is a hydraulic oil supply joint, 8 is a hydraulic oil discharge joint, 9 is a hydraulic oil passage, and 10 is a spring pressure adjusting screw of the coil spring 4. Opening and closing of needle valve 2 is performed by hydraulic oil supply joint 7
Is supplied to the oil receiving portion 9a at the intermediate portion of the needle valve through the hydraulic oil passage 9, and the oil pressure of the oil receiving portion 9a acts on a portion having an area difference provided in the middle of the needle valve 2 so that the needle valve 2 This causes the gas to flow from the gas supply joint 3 through the gas passage 5, and is injected from the injection port 6 a through the injection hole 6 when the needle valve 2 is opened. On the other hand, the closing of the needle valve 2 is performed by releasing the hydraulic oil from the hydraulic oil discharge joint 8 and discharging the hydraulic oil to the outside, whereby the spring force of the coil spring 4 overcomes.
【０００３】[0003]
【発明が解決しようとする課題】かかるガス噴射弁を用
いた内燃式ガスエンジンに使用されるガスは自己着火性
の悪い燃料なため、グロープラグやスパークプラグ等の
強制着火装置を必要とし、小型のガスエンジンの場合は
前記グロープラグやスパークプラグとガス噴射弁の距離
も短く、簡単に装着が可能である。しかし、大型の直噴
式のガスエンジンの場合はガス噴流の都合の良い着火ポ
イントには、シリンダカバーやシリンダヘッドからの距
離が長過ぎ、従来のグロープラグやスパークプラグの装
着が困難であり、何れか別の手段が必要になる。その手
段の１つが、パルスレーザによる着火である。しかし、
このパルスレーザもガス燃料単体に照射しても着火はで
きず、プラズマの発生を促進する液滴の存在が必須条件
であり、プラズマ発生を助ける別の液滴、具体的には水
滴をガス中に存在させる必要がある。Since the gas used in an internal combustion type gas engine using such a gas injection valve is a fuel having poor self-ignitability, a forced ignition device such as a glow plug or a spark plug is required. In the case of the gas engine described above, the distance between the glow plug or spark plug and the gas injection valve is short, and the gas engine can be easily mounted. However, in the case of a large direct-injection gas engine, the distance from the cylinder cover or cylinder head is too long at a convenient ignition point of the gas jet, and it is difficult to attach a conventional glow plug or spark plug. Or another means is needed. One of the means is ignition by a pulse laser. But,
This pulsed laser cannot ignite even when irradiating a gaseous fuel alone, and the presence of a droplet that promotes plasma generation is an essential condition. Must be present.
【０００４】本発明はかかる従来技術の課題に鑑み、プ
ラズマ発生を助ける別の水滴を簡単な構成でガス噴流中
にほぼ均一に混合、分散させる事ができ、パルスレーザ
を使用した着火が可能となるガス・水混合噴射弁を提供
する事にある。In view of the problems of the prior art, the present invention makes it possible to mix and disperse another water droplet for assisting plasma generation almost uniformly in a gas jet with a simple structure, and to enable ignition using a pulse laser. To provide a mixed gas / water injection valve.
【０００５】[0005]
【課題を解決するための手段】内燃式ガスエンジンのガ
ス噴射弁、特にパルスレーザを使用してプラズマ発生に
より着火を行うエンジン等に適用されるガス・水混合噴
射弁において、水を貯溜する蓄水部、好ましくはガス噴
射弁本体側に設けた蓄水部と、該蓄水部から噴孔へ開口
する水路とを具え、前記針弁の開弁によりガス噴出時に
生じるガス流のエジェクター効果により、前記水路を介
して吸引された水粒子を噴孔より噴出されるガス中に分
布可能に構成した事を特徴とする。SUMMARY OF THE INVENTION In a gas injection valve of an internal combustion type gas engine, in particular, a gas / water mixture injection valve applied to an engine or the like which ignites by generation of plasma using a pulse laser, storage water is stored. A water portion, preferably a water storage portion provided on the gas injection valve main body side, and a water passage opening from the water storage portion to the injection hole, and an ejector effect of gas flow generated at the time of gas ejection by opening the needle valve is provided. The water particles sucked through the water channel can be distributed in the gas ejected from the injection hole.
【０００６】[0006]
【作用】本発明を図１に基づいて説明する。例えば作動
油供給継手７から作動油通路９を通って針弁中間部の受
油部９ａに作動油が供給されると、作動油の圧力が針弁
に作用し、針弁が開くとガスはガス供給継手３からガス
通路５を通り、噴孔６から不図示の燃焼室内に噴出す
る。前記ガス噴出によりガス噴孔６の孔路側部に開口し
ている水路１１（水噴出孔）開口が負圧になり、これに
より前記ガス噴出によるエジェクター効果により、蓄水
部内の水が水路１１を介して噴孔６内に吸い出されて小
さい水滴となり、ガスと一緒にガス噴流中でほぼ均一に
混合／分散されながら、燃焼室内へ拡散していく。これ
により、ガス中に水滴が微粒子状に均一に分布されるこ
とになるので、パルスレーザの照射により水滴がプラズ
マ化して、ガスへの着火が容易になる。The present invention will be described with reference to FIG. For example, when hydraulic oil is supplied from the hydraulic oil supply joint 7 to the oil receiving portion 9a at the intermediate portion of the needle valve through the hydraulic oil passage 9, the pressure of the hydraulic oil acts on the needle valve. The gas is injected from the gas supply joint 3 through the gas passage 5 into the combustion chamber (not shown) from the injection hole 6. Due to the gas ejection, the water channel 11 (water ejection hole) opening on the channel side of the gas injection hole 6 has a negative pressure, whereby the water in the water storage unit is moved through the water channel 11 by the ejector effect of the gas ejection. The water droplets are sucked into the injection holes 6 to become small water droplets, and diffuse into the combustion chamber while being mixed / dispersed almost uniformly in the gas jet together with the gas. As a result, the water droplets are uniformly distributed in the form of fine particles in the gas, so that the water droplets are turned into plasma by irradiation with the pulse laser, and the gas is easily ignited.
【０００７】[0007]
【発明の実施の形態】以下、図面を参照して本発明の好
適な実施例を例示的に詳しく説明する。但し、この実施
例に記載されている構成部品の寸法、材質、形状、その
相対的配置等は特に特定的な記載がないかぎりは、この
発明の範囲をそれに限定する趣旨ではなく、単なる説明
例にすぎない。図１に本発明の実施形態に係わるガス噴
射弁の概略断面図を示す。図中１はガス噴射弁本体、２
は針弁、４はコイルバネ、１０はバネ圧調整ねじ、３は
ガス供給継手、５はガス通路、７は作動油供給継手、８
は作動油排出継手、９は作動油通路で、かかる構成は既
に図２で説明してある。そして本実施形態は、前記図２
の従来のガス噴射弁のガス噴射弁本体１側部を削成しそ
の部分に蓄水部１０を設け、蓄水部１０からガス噴孔６
側部へ開口する水路１１を設けたものである。前記水路
１１はガス噴孔６より細径に形成するのがよく、具体的
にはエジェクター効果により吸引される水量に対応して
前記水路１１径を設定する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be illustratively described in detail below with reference to the drawings. However, unless otherwise specified, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. It's just FIG. 1 shows a schematic sectional view of a gas injection valve according to an embodiment of the present invention. In the figure, 1 is a gas injection valve main body, 2
Is a needle valve, 4 is a coil spring, 10 is a spring pressure adjusting screw, 3 is a gas supply joint, 5 is a gas passage, 7 is a hydraulic oil supply joint, 8
Is a hydraulic oil discharge joint, and 9 is a hydraulic oil passage. Such a structure has already been described with reference to FIG. In the present embodiment, FIG.
Of the gas injection valve body 1 of the conventional gas injection valve, a water storage section 10 is provided in that portion, and the water injection section 6
A water channel 11 opening to the side is provided. The water channel 11 is preferably formed to have a smaller diameter than the gas injection hole 6, and specifically, the diameter of the water channel 11 is set in accordance with the amount of water sucked by the ejector effect.
【０００８】次にかかる構成の作用を説明する。作動油
供給継手７から作動油通路９を通って針弁中間部の受油
部９ａに作動油が供給されると、該受油部９ａの油圧力
が針弁２の中間に設けられた面積差の部分に作用してバ
ネ力に打ち勝って針弁２を押し上げ、これによりガスは
ガス供給継手３からガス通路５を通り、針弁２の開弁時
に噴孔６を通じて噴出口６ａから噴射される。ガスがガ
ス噴孔６から噴出すると、ガス噴孔６の孔路側部に開口
している水路１１（水噴出孔）開口が負圧になり、これ
により前記ガス噴出によるエジェクター効果により、蓄
水部１０内の水が水路１１を介して噴孔６内に吸い出さ
れて、ガス中に水粒子となって均一にガス噴流中でほぼ
均一に混合／分散されながら燃焼室内へ拡散していく。
これに例えばパルスレーザを照射すると水粒子がプラズ
マ化して、ガス燃料への着火源となる。Next, the operation of the above configuration will be described. When hydraulic oil is supplied from the hydraulic oil supply joint 7 to the oil receiving portion 9a at the intermediate portion of the needle valve through the hydraulic oil passage 9, the oil pressure of the oil receiving portion 9a increases the area provided in the middle of the needle valve 2. Acting on the difference portion, it overcomes the spring force and pushes up the needle valve 2, whereby the gas passes from the gas supply joint 3 through the gas passage 5, and is injected from the injection port 6 a through the injection hole 6 when the needle valve 2 is opened. You. When the gas is ejected from the gas injection hole 6, the opening of the water channel 11 (water injection hole) opened to the side of the channel of the gas injection hole 6 becomes a negative pressure. The water in 10 is sucked into the injection hole 6 through the water channel 11, becomes water particles in the gas, and is uniformly mixed / dispersed in the gas jet while diffusing into the combustion chamber.
When this is irradiated with, for example, a pulse laser, the water particles are turned into plasma and serve as an ignition source for gaseous fuel.
【０００９】[0009]
【発明の効果】以上記載のごとく本発明によれば、プラ
ズマ発生を助ける別の水滴を簡単な構成でガス噴流中に
ほぼ均一に混合、分散させる事ができ、パルスレーザを
使用した着火が可能となる。As described above, according to the present invention, another water droplet for assisting plasma generation can be mixed and dispersed almost uniformly in a gas jet with a simple structure, and ignition using a pulse laser can be performed. Becomes
【図１】本発明の実施形態に係るガス噴射弁の概略断面
図である。FIG. 1 is a schematic sectional view of a gas injection valve according to an embodiment of the present invention.
【図２】従来技術に係るガス噴射弁の概略断面図であ
る。FIG. 2 is a schematic sectional view of a gas injection valve according to the related art.
１ ガス噴射弁本体 ２ 針弁 ３ ガス供給継手 ４ コイルバネ ５ ガス通路 ６ ガス噴孔 ７ 作動油供給継手 ８ 作動油排出継手 ９ 作動油通路 １０ 蓄水部 １１ 水路 DESCRIPTION OF SYMBOLS 1 Gas injection valve main body 2 Needle valve 3 Gas supply joint 4 Coil spring 5 Gas passage 6 Gas injection hole 7 Hydraulic oil supply joint 8 Hydraulic oil discharge joint 9 Hydraulic oil passage 10 Water storage unit 11 Water passage
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｆ０２Ｍ 25/02 Ｔ (58)調査した分野(Int.Cl.7，ＤＢ名) F02M 21/02 F02M 25/022 F02M 61/04 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 identification code FI F02M 25/02 T (58) Investigated field (Int.Cl. 7 , DB name) F02M 21/02 F02M 25/022 F02M 61 / 04
Claims (1)
作により噴孔の開弁制御を行いながら該噴孔よりガス噴
射を行う内燃式ガスエンジンのガス噴射弁において、 水を貯溜する蓄水部、好ましくは前記ガス噴射弁本体側
に設けた蓄水部と、該蓄水部から噴孔へ開口する水路と
を具え、前記針弁の開弁によりガス噴出時に生じるガス
流のエジェクター効果により、前記水路を介して吸引さ
れた水粒子を噴孔より噴出されるガス中に分布可能に構
成した事を特徴とするガス・水混合噴射弁。1. A gas injection valve for an internal combustion type gas engine that performs gas injection from an injection hole while controlling valve opening of the injection hole by advancing and retreating a needle valve provided in the gas injection valve body. A water storage unit, preferably a water storage unit provided on the gas injection valve main body side, and a water passage opening from the water storage unit to the injection hole, and an ejector for a gas flow generated at the time of gas ejection by opening the needle valve A gas / water mixing injection valve, characterized in that water particles sucked through the water channel can be distributed in gas ejected from an injection hole by an effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33634896A JP3272622B2 (en) | 1996-12-02 | 1996-12-02 | Gas / water mixed injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33634896A JP3272622B2 (en) | 1996-12-02 | 1996-12-02 | Gas / water mixed injection valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10159658A JPH10159658A (en) | 1998-06-16 |
| JP3272622B2 true JP3272622B2 (en) | 2002-04-08 |
Family
ID=18298204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33634896A Expired - Fee Related JP3272622B2 (en) | 1996-12-02 | 1996-12-02 | Gas / water mixed injection valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3272622B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7695275B2 (en) | 2004-06-02 | 2010-04-13 | Fuel Management, Inc. | Air:fluid distribution system and method |
| CN109555620B (en) * | 2018-10-22 | 2023-09-22 | 中船动力研究院有限公司 | Gas injection valve with automatic protection device and working method thereof |
| JP7399490B2 (en) * | 2020-09-07 | 2023-12-18 | 株式会社アネブル | fuel injector |
| GB2616906B (en) * | 2022-03-25 | 2024-07-17 | Phinia Delphi Luxembourg Sarl | Injection device |
-
1996
- 1996-12-02 JP JP33634896A patent/JP3272622B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10159658A (en) | 1998-06-16 |
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