JPH065056B2 - Gas injection device - Google Patents
Gas injection deviceInfo
- Publication number
- JPH065056B2 JPH065056B2 JP61198203A JP19820386A JPH065056B2 JP H065056 B2 JPH065056 B2 JP H065056B2 JP 61198203 A JP61198203 A JP 61198203A JP 19820386 A JP19820386 A JP 19820386A JP H065056 B2 JPH065056 B2 JP H065056B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- gas injection
- gas
- oil
- pressure
- 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 - Lifetime
Links
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
- F02M21/0245—High pressure fuel supply systems; Rails; Pumps; Arrangement of valves
-
- 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
- F02M21/0251—Details of actuators therefor
-
- 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
- F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
- F02M21/026—Lift valves, i.e. stem operated valves
- F02M21/0263—Inwardly opening single or multi nozzle valves, e.g. needle valves
-
- 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
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Fuel-Injection Apparatus (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はガス燃料ディーゼル機関又はガス及び油の混焼
ディーゼル機関に適用されるガス燃料の緊急遮断装置を
具えたガス噴射装置に関する。Description: TECHNICAL FIELD The present invention relates to a gas injection device equipped with a gas fuel emergency cutoff device applied to a gas fuel diesel engine or a gas and oil mixed combustion diesel engine.
第４図は従来形ガス噴射装置の全体構成図、第５図はガ
ス噴射弁の断面図を示す。FIG. 4 is an overall configuration diagram of a conventional gas injection device, and FIG. 5 is a sectional view of a gas injection valve.
ガス蓄圧容器１には一定圧力の高圧ガスが蓄圧され、ガ
ス供給管２を通り緊急遮断弁１０、バッファタンク１１
をへてシリンダカバー３に取り付けられたガス噴射弁４
に供給される。ディーゼル機関５の回転軸により駆動さ
れるアクチュエータポンプ６で発生した作動油圧は、作
動油供給管７を介してガス噴射弁４のニードル弁１３に
供給され、燃焼室にガス噴射を行なっている。高圧ガス
は第５図に示すとおり、ニードル弁１３の摺動部１３ａ
より洩れ易いため、常時ガス圧力とほぼ同程度の圧力シ
ール油を作用させるシール油容器８、及びシール油供給
管９をそなえ、ガス噴射弁シール油入口部４ａに接続し
摺動部１３ａに通油している。又ガス供給管２の途中に
はガス供給を停止するための緊急遮断弁１０をそなえ、
緊急時には外部操作によりガスの供給を遮断するように
している。High pressure gas having a constant pressure is accumulated in the gas accumulator container 1, passes through the gas supply pipe 2, and the emergency shutoff valve 10 and the buffer tank 11 are provided.
Gas injection valve 4 attached to cylinder cover 3
Is supplied to. The hydraulic pressure generated by the actuator pump 6 driven by the rotary shaft of the diesel engine 5 is supplied to the needle valve 13 of the gas injection valve 4 via the hydraulic oil supply pipe 7 to inject gas into the combustion chamber. As shown in FIG. 5, the high-pressure gas has a sliding portion 13a of the needle valve 13.
Since it is more likely to leak, it is equipped with a seal oil container 8 and a seal oil supply pipe 9 that constantly actuate pressure seal oil at about the same pressure as the gas pressure, and is connected to the gas injection valve seal oil inlet portion 4a and connected to the sliding portion 13a. It's oiling. An emergency shutoff valve 10 for stopping the gas supply is provided in the middle of the gas supply pipe 2,
In an emergency, the gas supply is shut off by an external operation.
ところが従来形のガス噴射装置においては、緊急遮断弁
１０は配置の関係上ガス噴射弁となる程度分離して設置
することが避けられないため、緊急時に緊急遮断弁を閉
止してもガス供給管の一部及びガス噴射弁内に残留ガス
が残存し、弁閉止後なお数回の噴射が確実に行われるた
め緊急時の安全上問題があった。However, in the conventional gas injection device, it is inevitable that the emergency shutoff valve 10 is installed separately to the extent that it becomes a gas injection valve due to the arrangement, and therefore the gas supply pipe is closed even if the emergency shutoff valve is closed in an emergency. There was a problem in safety in an emergency because residual gas remained in part of the gas injection valve and in the gas injection valve, and injection was reliably performed several times after the valve was closed.
本発明の目的は前記従来装置の問題点を解消し、緊急時
にガス燃料を最短時間で遮断でき安全上極めて有効な二
元燃料機関のガス噴射装置を提供するにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the conventional device and to provide a gas injection device for a dual fuel engine which can shut off gas fuel in the shortest time in an emergency and is extremely effective for safety.
本発明のガス噴射装置は、緊急時にガス燃料を瞬時に完
全に遮断し安全を確保するためのもので、燃料ガス洩れ
防止用シール油供給装置の油圧管を分岐してガス噴射弁
上部のばね室にそのシール油圧を導入し、緊急時には分
岐点に設けられた油路切替え弁を切替え、該シール油圧
をニードル弁押棒頂部に作用させてニードル弁の弁部を
閉止し、ガス噴射を確実に瞬時に停止させるように構成
したものである。The gas injection device of the present invention is for instantaneously completely shutting off the gas fuel in an emergency to ensure safety, and branches the hydraulic pipe of the seal oil supply device for the fuel gas leakage prevention into the spring above the gas injection valve. Introduce the seal oil pressure into the chamber, switch the oil passage switching valve provided at the branch point in case of emergency, and apply the seal oil pressure to the needle valve push rod top to close the valve portion of the needle valve to ensure gas injection. It is configured to stop instantly.
シール油供給管の分岐点に設置された切替弁を緊急時に
外部電気信号等により切り替え、シール油の油圧をガス
噴射弁のばね室へ導入し、ばね室下部の押棒頂部を押圧
し、押棒を介してその下端がニードル弁を弁座方向に押
し付けるので、弁部は瞬時に閉止することができる。In an emergency, the switching valve installed at the branch point of the seal oil supply pipe is switched by an external electric signal, etc., the oil pressure of the seal oil is introduced into the spring chamber of the gas injection valve, and the top of the push rod under the spring chamber is pressed to push the push rod. Since the lower end presses the needle valve toward the valve seat via the valve, the valve portion can be instantly closed.
以下第１〜３図を参照し本発明の一実施例について説明
する。An embodiment of the present invention will be described below with reference to FIGS.
第１図は本発明に係る実施例の全体構成図、第３図はガ
ス噴射弁の上面図、第２図は第３図のII−II断面図であ
る。1 is an overall configuration diagram of an embodiment according to the present invention, FIG. 3 is a top view of a gas injection valve, and FIG. 2 is a sectional view taken along line II-II of FIG.
第１〜３図に示すとおりガス燃料供給ラインは従来技術
とほぼ同様で、ガス蓄圧容器１に蓄圧された一定圧力の
高圧ガスはガス燃料供給管２を通りバッファタンク１１
をへてガス噴射弁４へ導入される。機関５の回転軸より
駆動されるアクチュエータポンプ６で発生した油圧は、
作動油供給管７をへてガス噴射弁４の作動油入口４ｆよ
りニードル弁１３の作動油溜部１２ａに導入され、（油
路は図示せず）ニードル弁１３のつば部に作用し上方へ
押上げる力を発生する。As shown in FIGS. 1 to 3, the gas fuel supply line is almost the same as in the prior art, and the high pressure gas of a constant pressure accumulated in the gas accumulator container 1 passes through the gas fuel supply pipe 2 and the buffer tank 11
And is introduced into the gas injection valve 4. The hydraulic pressure generated by the actuator pump 6 driven by the rotary shaft of the engine 5 is
The oil is introduced into the hydraulic oil reservoir 12a of the needle valve 13 from the hydraulic oil inlet 4f of the gas injection valve 4 through the hydraulic oil supply pipe 7, and acts on the flange of the needle valve 13 (the oil passage is not shown) to move upward. Generates a pushing force.
ニードル弁１３の上端は押棒１４と接触し、さらに押棒
１４の上端部はばね１５のばね力により弁棒１３を介し
て弁座方向に押圧され、開弁圧力がばね押え１６により
調整可能に形成されている。なおばね１５が収容されて
いるばね室１５ａには押棒１４の上端部及びばね押え１
６の下端部にそれぞれシール材１７，１８を取り付けら
れると共に、外部よりシール油を導入する給油口４ｂが
設けられている。The upper end of the needle valve 13 contacts the push rod 14, and the upper end of the push rod 14 is pressed toward the valve seat via the valve rod 13 by the spring force of the spring 15, and the valve opening pressure is adjustable by the spring retainer 16. Has been done. The spring chamber 15a in which the spring 15 is housed has an upper end portion of the push rod 14 and the spring retainer 1.
Sealing materials 17 and 18 are attached to the lower end portions of 6 and an oil supply port 4b for introducing sealing oil from the outside is provided.
一方ニードル弁１３の摺動部１３ａよりのガス洩れを防
止するためのシール油が、シール油蓄圧容器８よりシー
ル供給管９ａと通路切替弁１９を通り、さらにシール油
供給管９ａをへてガス噴射弁４のシール油入口部４ａに
送入されニードル弁摺動部１３ａのシール油として作用
している。On the other hand, the seal oil for preventing gas leakage from the sliding portion 13a of the needle valve 13 passes from the seal oil accumulator container 8 through the seal supply pipe 9a and the passage switching valve 19, and further through the seal oil supply pipe 9a. It is fed into the seal oil inlet portion 4a of the injection valve 4 and acts as seal oil for the needle valve sliding portion 13a.
次に前記実施例の作用について説明する。Next, the operation of the above embodiment will be described.
安全上緊急にガスを遮断する必要が生じた場合には、通
路切替弁１９の油通路を電気信号等により切り替え、緊
急操作油管９ｂをへてガス噴射弁４のばね室供給油口４
ｂよりばね室１５ａに導入し、押棒１４の上端にシール
油圧を作用させ、ニードル弁１３を下方へ押し下げ弁部
を閉止する。この際アクチュエータ６に発生した作動油
圧がニードル弁を上方へ押し上げようとするが、このニ
ードル弁１３を押し上げる力に対して前記押棒を介して
ニードル弁１３を押し下げる力は押棒頂部の受圧面積を
十分大きくとっているためニードル弁を完全かつ瞬時に
噴射最末端部で遮断が可能となる。When it is necessary to shut off the gas urgently for safety, the oil passage of the passage switching valve 19 is switched by an electric signal or the like, and the emergency operation oil pipe 9b is moved to the spring chamber supply oil port 4 of the gas injection valve 4.
It is introduced into the spring chamber 15a from b, and the seal oil pressure is applied to the upper end of the push rod 14 to push the needle valve 13 downward and close the valve portion. At this time, the operating oil pressure generated in the actuator 6 tries to push the needle valve upward, but the force pushing the needle valve 13 downward against the force pushing the needle valve 13 through the push rod has a sufficient pressure receiving area at the top of the push rod. Since it is large, the needle valve can be completely and instantaneously shut off at the most distal end of injection.
本発明は前記のとおり構成したので、緊急時ガス燃料を
瞬間的に噴射最末端部で遮断が可能となり、安全上極め
て有効な二元燃料機関を提供することができる。Since the present invention is configured as described above, it is possible to instantaneously shut off the gas fuel in an emergency at the most distal end portion of injection, and it is possible to provide a dual fuel engine that is extremely effective in terms of safety.
第１〜３図は本発明の実施例で第１図は全体構成図、第
３図はガス噴射弁の上面図、第２図は第３図のII−II断
面図、第４〜５図は従来例で第４図は従来例の第１図応
当図、第５図は従来例の第２図応当図である。 １…ガス蓄圧容器、４…ガス噴射弁、４ｂ…ばね室給油
口、６…アクチュエータポンプ、９ａ…シール油供給
管、９ｂ…スール油分岐管、１２…ノズル、１２ｂ…弁
座部、１３…ニードル弁、１４…押棒、１５ａ…ばね
室、１９…通路切替弁。1 to 3 are embodiments of the present invention, FIG. 1 is an overall configuration diagram, FIG. 3 is a top view of a gas injection valve, FIG. 2 is a sectional view taken along line II-II of FIG. 3, and FIGS. FIG. 4 is a conventional example of FIG. 1 and FIG. 5 is a conventional example of FIG. 2. DESCRIPTION OF SYMBOLS 1 ... Gas accumulator, 4 ... Gas injection valve, 4b ... Spring chamber oil supply port, 6 ... Actuator pump, 9a ... Seal oil supply pipe, 9b ... Sur oil branch pipe, 12 ... Nozzle, 12b ... Valve seat part, 13 ... Needle valve, 14 ... push rod, 15a ... spring chamber, 19 ... passage switching valve.
Claims (1)
ス噴射弁に導入し他のアクチュエータポンプを介して発
生した作動油圧力によりガス噴射弁のニードル弁の弁部
を開閉してガス噴射を行なうとともに高圧ガスの洩れを
防止するためのシーツ油供給装置を備えたガス噴射装置
において、ガス噴射弁の弁部を開閉するニードル弁の上
部に設けらればね及びばね押えが収容されると同時に油
密に保持されたばね室と、シール油供給管より分岐した
ばね室給油口に接続されたシール油分岐管と、分岐部に
取付けられた通路切替え弁と、該通路切替弁を切替える
電気又は油圧等の駆動源とを有して成り、緊急時に前記
切替弁を切替えシール油圧力をばね室の押棒頂部に作用
させニードル弁の弁部を閉止し、ガス噴射の停止を可能
としたことを特徴としたガス噴射装置。1. Gas injection by introducing high-pressure gas accumulated in a gas accumulator or the like into a gas injection valve and opening / closing a valve portion of a needle valve of the gas injection valve by hydraulic oil pressure generated via another actuator pump. In a gas injection device equipped with a sheet oil supply device for preventing leakage of high-pressure gas, a spring and a spring retainer provided at the top of a needle valve for opening and closing the valve portion of the gas injection valve are accommodated at the same time. A spring chamber kept oil-tight, a seal oil branch pipe connected to a spring chamber oil supply port branched from a seal oil supply pipe, a passage switching valve attached to the branch portion, and an electric or hydraulic pressure for switching the passage switching valve. It has a drive source such as, and switches the switching valve in an emergency to cause the seal oil pressure to act on the top of the push rod of the spring chamber to close the valve portion of the needle valve and stop the gas injection. The gas injection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61198203A JPH065056B2 (en) | 1986-08-26 | 1986-08-26 | Gas injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61198203A JPH065056B2 (en) | 1986-08-26 | 1986-08-26 | Gas injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6355352A JPS6355352A (en) | 1988-03-09 |
| JPH065056B2 true JPH065056B2 (en) | 1994-01-19 |
Family
ID=16387196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61198203A Expired - Lifetime JPH065056B2 (en) | 1986-08-26 | 1986-08-26 | Gas injection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH065056B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59209671D1 (en) * | 1991-12-10 | 1999-05-06 | New Sulzer Diesel France Sa | Fuel injection valve for a reciprocating piston internal combustion engine for optional operation with diesel oil or with a gaseous fuel |
| CN105756826B (en) * | 2016-04-21 | 2018-01-19 | 哈尔滨工程大学 | Combined electromagnetic oil spout is pressurized electromagnetism jet hybrid fuel jet device |
-
1986
- 1986-08-26 JP JP61198203A patent/JPH065056B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6355352A (en) | 1988-03-09 |
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