WO2012011650A1 - Soupape d'injection pour deux fluides - Google Patents

Soupape d'injection pour deux fluides Download PDF

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Publication number
WO2012011650A1
WO2012011650A1 PCT/KR2011/001886 KR2011001886W WO2012011650A1 WO 2012011650 A1 WO2012011650 A1 WO 2012011650A1 KR 2011001886 W KR2011001886 W KR 2011001886W WO 2012011650 A1 WO2012011650 A1 WO 2012011650A1
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WO
WIPO (PCT)
Prior art keywords
fuel
chamber
injection
needle valve
injection valve
Prior art date
Application number
PCT/KR2011/001886
Other languages
English (en)
Korean (ko)
Inventor
정강윤
김응성
김주태
박득진
허광철
김종석
하은
노범용
Original Assignee
현대중공업 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Publication of WO2012011650A1 publication Critical patent/WO2012011650A1/fr

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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
    • F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • F02M43/04—Injectors peculiar thereto
    • 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
    • F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0686—Injectors
    • F02D19/0694—Injectors operating with a plurality of fuels
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/086—Having more than one injection-valve controlling discharge orifices
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • 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
    • F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0639—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
    • F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
    • F02D19/0657—Heavy or light fuel oils; Fuels characterised by their impurities such as sulfur content or differences in grade, e.g. for ships
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies
    • 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

Definitions

  • the present invention relates to a double fuel injection valve, and more compact than a conventional fuel injection valve, and to a double fuel injection valve capable of injection control of each fuel even when using a double fuel oil.
  • each fuel pump When the high-pressure fuel formed in each fuel pump enters the fuel injection valve, if a pressure higher than the opening pressure is formed in the needle lower nozzle pocket of the fuel injection valve, it overcomes the spring force that presses the needle valve and lifts the needle valve to the nozzle end. Fuel is injected into the cylinder through several nozzle holes located.
  • Such a method consists of a mechanism in which the nozzle hole is opened in accordance with a predetermined opening pressure, and injection is always performed at the same time (at a time when the pressure in the injection valve becomes higher than the opening pressure) according to a predetermined timing when assembling the engine. Will be done.
  • a spark plug or a micro pilot used for fuel injection valves for heavy oil when an operation (FO) requiring heavy oil in one cylinder is required, and for gas ignition for an operation requiring gas. At least two fuel injection valves are required to be installed.
  • the fuel injection valve may be expensive.
  • An object of the present invention for solving the above problems is to install a double fuel injection valve to enable a double fuel injection to the piston of the diesel engine that requires a double fuel injection, each fuel according to the required operation of the engine By enabling the injection, the required load of the engine and the performance of the engine are improved, and the fuel supplied according to the operation of the injection fuel pump required in the engine operation can be mechanically injected within a certain pressure range when the required pressure is reached. To provide a dual fuel injection valve.
  • the injection valve body is formed with a fuel inlet for FO and the fuel inlet for DO, and coupled to the injection valve body to the fuel oil
  • the fuel injection valve comprising a nozzle portion is formed by the opening pressure is formed by the chamber to raise the needle to inject the fuel oil, the nozzle portion,
  • a first chamber connected to the fuel inlet for the FO through a flow path to form an open pressure by filling the FO and injecting an FO injection nozzle therein to allow fuel oil to be injected;
  • the second chamber is formed in a concave shape in the lower portion of the first chamber and is connected to the DO fuel inlet through a flow path to fill the DO so that an open pressure is formed and a DO injection nozzle port is formed so that fuel oil can be injected.
  • a FO needle valve for opening and closing the FO injection nozzle port according to a mutual pressure difference between fuel oils filled in the first chamber;
  • the DO is installed inside the needle valve for FO to partition the first chamber and the second chamber and operate up and down according to the mutual pressure difference of the fuel oil filled in the second chamber to open and close the DO injection nozzle port. It is characterized by including a needle valve.
  • the first chamber, the support jaw is formed in the lower portion to support the FO needle valve, the flow path is formed so that the fuel oil can move when the FO needle valve is raised to the lower side of the support jaw, FO injection nozzle port is formed to be connected, the FO needle valve is caught on the supporting jaw to seal the inside of the first chamber to form an opening pressure and the FO needle valve is raised by the opening pressure
  • the fuel oil is characterized in that the injection through the injection nozzle for FO.
  • the flow path is formed inside the DO needle valve to enable the supply of DO to the second chamber.
  • the FO spindle is installed in the injection valve body to pressurize the FO needle valve; FO spring for providing an elastic force to the FO spindle; A DO spindle installed inside the FO spindle to pressurize the DO needle valve; And a spring for providing the elastic force to the spindle for the DO.
  • the FO spring adjustment screw is fastened to the injection valve body through a fixing nut to adjust the tension of the FO spring;
  • a spring adjustment screw for DO positioned in the spring adjustment screw for the FO and fixed to the injection valve body through a fixing nut to adjust the tension of the spring for DO.
  • FIG. 1 is a cross-sectional view showing a double fuel injection valve according to the present invention
  • FIG. 2 is a cross-sectional view showing in detail the spool portion of the double fuel injection valve according to the present invention
  • FIG. 3 is an exemplary view showing a FO fuel injection state of the double fuel injection valve according to the present invention
  • FIG. 4 is an exemplary view showing a DO fuel injection state of the double fuel injection valve according to the present invention.
  • first chamber 211 second chamber
  • FIG. 1 is a cross-sectional view showing a double fuel injection valve according to the present invention
  • Figure 2 is a cross-sectional view showing in detail the nozzle portion of the double fuel injection valve according to the present invention
  • a fuel inlet 110 for FO Injection valve body having a fuel injection port 121 for injection of fuel oil at a constant pressure through the FO fuel injection port 120 and the DO fuel injection port 111 through which the fuel oil is injected through a predetermined pressure
  • a nozzle unit 200 coupled to the injection valve body 100 and configured to separately inject the FO fuel and the DO fuel.
  • the nozzle unit 200 is connected to the FO fuel inlet 110 is filled with the FO fuel injected through the FO fuel inlet 110 to form an open pressure and the injection nozzle for FO so that the fuel oil can be injected ( 220 is formed in the first chamber 210, and formed in a concave shape in the lower portion of the first chamber 210 and connected to the DO fuel inlet 111 is injected through the DO fuel inlet 111
  • the opening pressure is formed by filling the DO fuel oil, and the second chamber 211 having the DO injection nozzle port 221 is formed so that the fuel oil can be injected therebetween, and the fuel oil filled in the first chamber 210.
  • the FO needle valve 230 for opening and closing the FO injection nozzle port 220 and the FO needle valve 230 according to the pressure difference are installed in the first chamber 210 and the second chamber. Partition 211 and operate up and down according to the mutual pressure difference of the fuel oil filled in the second chamber (211). It is configured to include a needle valve 231 for DO that by opening and closing the opening (221) for the injection nozzle DO.
  • the first chamber 210 has a concave support jaw 213 formed at a lower portion thereof to support the FO needle valve 230, and has a needle valve for the FO below the support jaw 213.
  • a flow path 212 is formed to allow fuel oil to move when the 230 is raised, and an FO injection nozzle port 220 is formed to be connected to the flow path 212.
  • the first chamber 210 is sealed by the FO needle valve 230 by the support jaw 213 to seal the inside of the first chamber 210 by the fuel oil filled in the first chamber 210.
  • An opening pressure for raising the FO needle valve 230 is formed, and the flow path 212 is opened by raising the FO needle valve 230 so that the FO fuel oil is injected through the FO injection nozzle port 220. .
  • a flow path communicating with the second chamber 211 is formed at an inner center of the DO needle valve 231 to allow fuel oil to be supplied into the second chamber 211 and to the second chamber 211.
  • the opening pressure is formed by the fuel oil to be filled to raise the DO needle valve 231, so that the DO injection nozzle port 221 is opened to inject fuel oil.
  • the injection valve body 100 is provided with an FO spindle 130 for pressurizing the FO needle valve 230 and an FO spring 140 for providing an elastic force to the FO spindle 130.
  • the FO spindle 130 pressurizes the FO needle valve 230 by the elastic force of the FO spring 140 so that the FO needle valve 230 can seal the FO injection nozzle port 220.
  • DO is configured to include a spring 141.
  • the DO spindle 131 presses the DO needle valve 231 by the elastic force of the DO spring 141 so that the DO needle valve 231 can seal the DO injection nozzle 220. Will be.
  • the present invention is fastened to the injection valve body 100 through the first fixing nut 160 to adjust the tension of the FO spring 140, FO spring adjustment screw 150, the FO spring adjustment screw Located in the interior of the 150 is fixed to the injection valve body 100 through the second fixing nut 161 is configured to further include a DO adjustment screw 151 for adjusting the tension of the spring for the DO 141. .
  • the spring adjustment screw 150 for the FO and the spring adjustment screw 151 for the DO correspond to the pressure for opening the FO needle valve 230 and DO needle valve 231 to facilitate the injection of fuel oil Adjust appropriately.
  • the FO injection nozzle hole 220 is larger in diameter than the DO nozzle nozzle 221, and can be configured in a different quantity. That is, the FO injection nozzle hole 220 does not use GAS for main injection. Or it needs to be loaded when it needs high load, it has to be injected with a lot of fuel.
  • DO injection nozzle 221 is for ignition of the GAS takes about 1-2% of the FO fuel (DO), the nozzle diameter and number is smaller than the FO injection nozzle (220).
  • the FO fuel oil is not supplied to the inside of the first chamber 210 so that the opening pressure is removed, thereby maintaining the pressurized state by the FO spring 140.
  • a process of injecting DO fuel oil is performed.
  • DO fuel oil is injected into the injection valve body 100 through the DO fuel inlet 111
  • the FO fuel oil is a DO fuel feed port 121. It is supplied to the second chamber 211 through.
  • DO needle valve 231 When the DO needle valve 231 is raised in this way, the DO injection nozzle opening 221 is opened and DO fuel oil is injected into the piston through the open DO injection nozzle opening 221.
  • DO fuel oil is not supplied to the inside of the second chamber 211 so that the opening pressure is removed, thereby lowering and lowering the DO spindle 131 pressurized by the DO spring 141.
  • the DO needle valve 231 is lowered by the DO spindle 131 to seal the DO injection nozzle port 221.
  • the present invention configured as described above allows the FO pump to operate when the FO fuel is used, so that the FO injection can be performed, and the DO pump operates when the engine is required for gas. In order to be able to make the injection, it is possible to control the injection of each fuel even in a compact and double fuel oil than the conventional fuel injection valve.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention porte sur une soupape d'injection pour deux fluides et en particulier sur une telle soupape permettant l'injection de deux types de carburants requis par un moteur diesel, l'installation de cette soupape dans le moteur: permettant l'injection de deux carburants dans un cylindre du moteur; améliorant la charge demandée au moteur et les performances du moteur; et pouvant assurer l'injection mécanique à l'intérieur d'une certaine plage de pressions lorsque le carburant fourni par la pompe d'injection nécessaire au fonctionnement du moteur atteint la pression requise. Pour atteindre les objectifs ci-dessus la soupape de l'invention comporte: un corps présentant une entrée de carburant FO et une entrée de carburant DO; et une unité de buse présentant une chambre reliée au corps de la soupape où s'établit la pression du carburant nécessaire à l'ouverture de la buse, à la levée de l'aiguille et à l'injection du carburant. L'unité de buse comprend: une première chambre présentant une ouverture pour l'injection du carburant FO, reliée à l'entrée de carburant FO via un passage et se remplissant de carburant FO pour établir la pression d'ouverture en vue de l'injection du carburant FO; une deuxième chambre présentant une ouverture pour l'injection du carburant DO, de forme concave, située à la base de la première chambre, reliée à l'entrée de carburant DO via un passage, et se remplissant de carburant DO pour établir la pression d'ouverture en vue de l'injection du carburant DO, une soupape à aiguille FO ouvrant et refermant l'ouverture d'injection du FO en fonction du différentiel de pression entre les carburants remplissant la première chambre; et une soupape à aiguille DO installée dans la soupape à aiguille FO pour partager la première et la deuxième chambre et fonctionnant verticalement en fonction du différentiel de pression entre les carburants remplissant la deuxième chambre et ouvrant et fermant ainsi l'ouverture de la buse d'injection du DO.
PCT/KR2011/001886 2010-07-23 2011-03-18 Soupape d'injection pour deux fluides WO2012011650A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100071496A KR101158631B1 (ko) 2010-07-23 2010-07-23 ２중 연료분사밸브
KR10-2010-0071496 2010-07-23

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WO2012011650A1 true WO2012011650A1 (fr) 2012-01-26

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PCT/KR2011/001886 WO2012011650A1 (fr) 2010-07-23 2011-03-18 Soupape d'injection pour deux fluides

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KR (1) KR101158631B1 (fr)
WO (1) WO2012011650A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103821649A (zh) * 2014-02-18 2014-05-28 刘学文 柴油机喷嘴喷双燃料，高压脉冲点火，节能尾气清洁排放装置及方法
CN104675592A (zh) * 2015-02-13 2015-06-03 江苏大学 一种带有自润滑功能的天然气/柴油双燃料喷射器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013188247A1 (fr) * 2012-06-10 2013-12-19 Quantlogic Corporation Procédé, système et injecteur de carburant pour une injection polycarburant dotée d'une intensification de pression et d'un orifice variable
DK178149B1 (en) * 2013-10-30 2015-06-29 Man Diesel & Turbo Deutschland A Fuel Valve for Pilot Oil Injection and for Injecting Gaseous Fuel into the Combustion Chamber of a Self-Igniting Internal Combustion Engine
CN106677945B (zh) * 2016-07-12 2019-07-05 江西汇尔油泵油嘴有限公司 分阶段喷油的喷油嘴以及分阶段喷油方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07150965A (ja) * 1993-11-26 1995-06-13 Mitsubishi Heavy Ind Ltd 二種流体噴射装置
JPH1026058A (ja) * 1996-07-09 1998-01-27 Mitsubishi Heavy Ind Ltd 内燃機関の二流体噴射弁
KR100299288B1 (ko) * 1991-12-10 2002-06-20 브룬너 하인리히 페터 울리히 왕복연소기관용연료분사밸브
JP2006183468A (ja) * 2004-12-24 2006-07-13 Denso Corp 燃料噴射装置
JP2009275646A (ja) * 2008-05-16 2009-11-26 Denso Corp 燃料噴射ノズル

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100299288B1 (ko) * 1991-12-10 2002-06-20 브룬너 하인리히 페터 울리히 왕복연소기관용연료분사밸브
JPH07150965A (ja) * 1993-11-26 1995-06-13 Mitsubishi Heavy Ind Ltd 二種流体噴射装置
JPH1026058A (ja) * 1996-07-09 1998-01-27 Mitsubishi Heavy Ind Ltd 内燃機関の二流体噴射弁
JP2006183468A (ja) * 2004-12-24 2006-07-13 Denso Corp 燃料噴射装置
JP2009275646A (ja) * 2008-05-16 2009-11-26 Denso Corp 燃料噴射ノズル

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103821649A (zh) * 2014-02-18 2014-05-28 刘学文 柴油机喷嘴喷双燃料，高压脉冲点火，节能尾气清洁排放装置及方法
CN103821649B (zh) * 2014-02-18 2015-11-18 刘学文 柴油机喷嘴喷双燃料，高压脉冲点火，节能尾气清洁排放装置及方法
CN104675592A (zh) * 2015-02-13 2015-06-03 江苏大学 一种带有自润滑功能的天然气/柴油双燃料喷射器
CN104675592B (zh) * 2015-02-13 2018-01-16 江苏大学 一种带有自润滑功能的天然气/柴油双燃料喷射器

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Publication number Publication date
KR101158631B1 (ko) 2012-06-26
KR20120009317A (ko) 2012-02-01

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