WO2017028537A1 - Injecteur de carburant pour moteur diesel marin - Google Patents

Injecteur de carburant pour moteur diesel marin Download PDF

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Publication number
WO2017028537A1
WO2017028537A1 PCT/CN2016/077377 CN2016077377W WO2017028537A1 WO 2017028537 A1 WO2017028537 A1 WO 2017028537A1 CN 2016077377 W CN2016077377 W CN 2016077377W WO 2017028537 A1 WO2017028537 A1 WO 2017028537A1
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WO
WIPO (PCT)
Prior art keywords
piston
oil
opening
pressure
closing
Prior art date
Application number
PCT/CN2016/077377
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English (en)
Chinese (zh)
Inventor
唐文献
章金鑫
张建
刘博�
李大保
王筱蓉
刘辰朋
晏飞
Original Assignee
江苏科技大学
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 江苏科技大学 filed Critical 江苏科技大学
Priority to DE212016000002.0U priority Critical patent/DE212016000002U1/de
Publication of WO2017028537A1 publication Critical patent/WO2017028537A1/fr

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    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • 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

Definitions

  • the invention belongs to the field of engine design and relates to an injector, in particular to an external solenoid valve piston opening and closing injector for use on a marine diesel engine.
  • the injector of the fuel injection device which is a key component of the diesel engine, has been developed into the current electronically controlled injector, which has higher requirements on the control accuracy of injection timing, fuel injection law and fuel injection quantity, and the manufacturing precision requirements of the components. And the injector has higher requirements for the suitability of different oils.
  • the common electromagnet and the needle valve coupler are commonly used, and the common rail injector structure for injecting and discharging through the needle valve is difficult to manufacture, sensitive to oil, and the injector is low in modularity and difficult to maintain. Poor interchangeability.
  • the present invention provides a marine diesel injector that effectively achieves rapid response and stable performance, while the electronic control and fuel injection portions are independent of each other, and the entire injector is realized. Modular, so maintenance and repair is convenient.
  • a marine diesel injector of the present invention comprises a body, a piston assembly and a solenoid valve control module;
  • the upper part of the body is provided with a solenoid valve control module, and the upper part is further provided with a high-pressure oil pipe interface for receiving high-pressure fuel.
  • the high-pressure oil pipe connection communicates with the inner hole of the mounting body located in the body, and the inner hole of the mounting seat is connected with the first oil passage.
  • a groove is arranged in a lower part of the inner body, and a piston assembly is installed in the groove;
  • the piston assembly includes an opening and closing piston, an opening and closing piston rod and a fuel injector, wherein the opening and closing piston has a piston body on the upper and lower sides and a cylindrical structure in the middle portion, and the opening and closing piston rod is thin at the upper end and thick at the lower end, and is opened and closed.
  • the piston and the inner wall of the groove of the body form an outer piston cavity
  • the opening and closing piston and the opening and closing piston rod form an inner piston cavity
  • the outer piston cavity communicates with the high pressure oil pipe through the first oil passage, and is provided on the cylindrical structure of the opening and closing piston
  • the oil hole of the oil inlet, the inner piston cavity communicates with the outer piston cavity through the oil hole
  • the fuel injection nozzle is located at the lower end of the opening and closing piston, and the fuel injection nozzle is provided with an oil injection hole;
  • the solenoid valve control module includes an external solenoid valve, a mounting base and a control piston.
  • the external solenoid valve is connected to the body through a mounting base, the control piston is located in the mounting base, and an oil storage chamber is arranged at an upper portion of the body.
  • the piston rod of the control piston is inserted into the oil storage chamber, and the liquid in the oil storage chamber flows into the top end of the opening and closing piston through the third oil passage.
  • the body is provided with a fuel leakage hole, and the fuel leakage hole communicates with the second oil passage communicating with the outside, the first oil passage intersects with the second oil passage, and the inner hole of the mounting seat is tapered.
  • the fuel leakage hole communicates with the outside world. After the fuel enters through the horizontal hole, it will only flow downward due to the pressure, and its liquid level will not exceed the height of the horizontal hole. (Connector principle: the liquid level of the pipe connected to the air Not higher than the level of the horizontal pipe); but in the case of oil return, The opposite is true. When the fuel returns to the intersection of the horizontal hole and the vertical hole, it can flow out from the hole that is in contact with the air to complete the leak.
  • the body is provided with an upper oil passage communicating with the oil storage chamber, and the top end of the upper oil passage is provided with an external servo hydraulic system.
  • the installation base is provided with a leakage oil return port communicating with the control piston.
  • an adjustment pad for adjusting the volume of the reservoir chamber is mounted between the mounting base and the body.
  • the body of the invention receives the high-pressure fuel through the high-pressure oil pipe and reaches the opening and closing piston cavity through the internal oil passage, and the high-pressure servo hydraulic oil reaches the control piston cavity through the internal oil passage, the high-pressure fuel pressure is slightly larger than the high-pressure servo hydraulic oil pressure, and the high-pressure fuel oil
  • the combination of pressure and hydraulic servo hydraulic oil pressure, the opening and closing piston stops at the top dead center, and the control port of the external solenoid valve changes the oil circuit of the high pressure or low pressure to change the oil pressure of the control room. And controlling the downward stroke of the piston, thereby compressing the servo hydraulic oil of the control piston chamber, pushing the opening and closing piston to travel downward, thereby realizing the opening and closing of the lower end oil passage of the opening and closing piston to achieve the fuel injection control.
  • the invention adopts the opening and closing piston assembly instead of the needle valve coupling member, realizes the hydraulic opening and closing of the injector, and combines with the external electromagnetic control to realize the modular structure and the multiple injection, and has the performance stability and the processing precision requirement. Low, easy maintenance and adaptability to fuel quality changes, especially suitable for medium and low speed marine high power diesel engines.
  • the marine diesel injector of the present invention combines the high flow rate and high response speed controlled by an external solenoid valve with the high suitability and low manufacturing difficulty of the heavy duty oil of the piston open/close injector, and effectively realizes rapid response.
  • the work performance is stable, and the electronic control and fuel injection parts are independent of each other, and the entire injector is modularized, so that maintenance and repair are convenient.
  • Figure 1 is a schematic view of the structure of the present invention
  • Fig. 2 is a schematic view showing the state after the downward movement of the present invention.
  • the marine diesel injector of the present invention includes a body 1, a piston assembly and a solenoid valve control module.
  • the upper portion of the body 1 is provided with a high pressure oil pipe connection 13 and a mounting seat 11, and the high pressure oil pipe connection 11 is connected to an external high pressure oil pipe to receive high pressure fuel from a high pressure oil pump or a high pressure fuel common rail system.
  • the mounting seat 11 is connected to the high-pressure oil pipe port 13 and has an oil hole, that is, an inner hole of the mounting seat.
  • the oil hole is tapered, and is in contact with the interface of the high-pressure oil pipe and is sealed, and the oil hole is connected with the first oil passage.
  • the body 1 is provided with a fuel leakage hole 12, the fuel leakage hole is connected with the second oil passage communicating with the outside, the first oil passage intersects with the second oil passage, and the fuel leakage hole 12 is connected with the high pressure common rail system or the high pressure oil pump.
  • the injector 4 has oil returning, the fuel can be leaked to avoid fuel leakage to the injector 4 elsewhere, which affects the working efficiency of the injector 4.
  • the piston assembly is disposed at a lower portion of the body 1 and includes an opening and closing piston 2, an opening and closing piston rod 3, and a fuel injector 4.
  • the opening and closing piston 2 is provided with an upper and lower piston body, and the intermediate portion has a cylindrical structure for connection.
  • the opening and closing piston 2 and the lower portion of the body 1 form an outer piston chamber 6, and the high pressure fuel enters the outer piston chamber 6 through the first oil passage of the body; the inner piston chamber 5 is formed between the opening and closing piston 2 and the piston rod 3, and the piston 2 is opened and closed.
  • the middle cylinder is provided with oil holes for oil supply.
  • the injector 4 is connected to a lower end of the opening and closing piston 2.
  • the opening and closing piston 2 slides downward along the opening and closing piston rod 3, and the outer piston chamber 6 communicates with the oil hole of the fuel injector 4.
  • the fuel in the outer piston chamber 6 enters the nozzle 4 to effect fuel injection.
  • the oil hole on the middle cylinder of the opening and closing piston 2 is closed by the lower end of the opening and closing piston rod 3.
  • the inner piston chamber 5 is disconnected from the outer piston chamber 6 to form a closed space. .
  • the opening and closing piston 2 moves downward, the oil pressure of the inner piston chamber 5 continues to increase, forming a certain level of high-pressure fuel, and the opening and closing piston 2 has an upward movement tendency under the action of its oil pressure.
  • the oil pressure in the inner piston chamber 5 is sufficient to overcome the pressure applied to the upper end of the opening and closing piston 2, the opening and closing piston 2 moves up until the outer piston chamber 6 is disconnected from the injector oil hole, and the fuel injection is stopped.
  • the inner piston chamber 5 communicates with the outer piston chamber 6, and the opening and closing piston 2 is reset by the action of pressure.
  • the solenoid valve control module is mounted on the top of the body 1, and includes an external solenoid valve 8, a mounting base 10, an adjustment washer 7, an external servo hydraulic system 15, and a control piston 9, the external solenoid valve 8 Mounted on the body 1 by a mounting base 10, the mounting base 10 is fixed to the body 1 by screws, the control piston 9 is placed in the inner cavity of the mounting base 10, and the bottom of the control piston 9
  • An oil storage chamber is formed between the end and the body 1, and the external servo hydraulic system 15 controls the pressure of the servo hydraulic oil entering the oil storage chamber through the upper oil passage of the body 1, the adjusting gasket 7 clamp It is placed between the mounting base 10 and the body 1, and the volume of the oil storage chamber is adjusted by changing the thickness.
  • the left side of the mounting base 10 is provided with a leaking oil return port 14 for discharging the leaked control oil to prevent the oil from entering the lower oil storage chamber.
  • the servo hydraulic oil pressure in the oil storage chamber is equal to the fuel pressure in the outer piston chamber 6, so that the opening and closing piston 2 is maintained in an equilibrium state.
  • the external solenoid valve 8 receives the external control signal, changes the stroke of the control piston 9, controls the servo hydraulic oil entering the oil storage chamber to flow to the upper end chamber of the opening and closing piston 2, and pushes the opening and closing piston 2 to move downward.
  • the specific working process of the present invention is as follows: when the external solenoid valve 8 is not energized, its internal control port is connected to the low pressure servo oil, and the control piston 9 is subjected to an upward servo oil pressure greater than that from the control chamber of the external solenoid valve 8 Under the servo oil pressure, the control piston 9 is kept in a stationary state, and the injector 4 is not sprayed.
  • the external solenoid valve 8 receives the control signal of the electronic control unit and is energized, its internal control port is quickly switched to the high-pressure servo oil, and the servo oil in the control chamber pushes the control piston 9 downward to push the servo oil in the oil storage chamber into the opening and closing.
  • the upper end chamber of the piston 2 pushes the opening and closing piston 2 downward, so that the outer piston chamber 6 is connected to the fuel injector 4, and the fuel injector 4 realizes fuel injection.
  • the oil pressure of the inner piston chamber 5 continues to increase, forming a certain level of high-pressure fuel, and the opening and closing piston 2 has an upward movement tendency under the action of its oil pressure.
  • the oil pressure in the inner piston chamber 5 is sufficient to overcome the pressure applied to the upper end of the opening and closing piston 2, the opening and closing piston 2 moves up until the outer piston chamber 6 is disconnected from the injector oil hole, and the fuel injection is stopped.
  • the inner piston chamber 5 and outside The piston chamber 6 is connected, and the opening and closing piston 2 is reset by the action of pressure.
  • the injector can be realized under the rapid switching of the electromagnetic valve 8.
  • the rapid movement of the opening and closing piston 2 enables a flexible injection mode and real-time adjustment.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un injecteur de carburant, pour un moteur diesel marin, qui comprend un corps principal (1), un ensemble de plongeur et un module de commande d'électrovanne. Le corps principal (1) reçoit du carburant à haute pression par l'intermédiaire d'un tube de carburant à haute pression, le carburant à haute pression atteint une cavité de plongeur d'ouverture/de fermeture par l'intermédiaire d'un canal de carburant interne, et, en même temps, une huile servo-hydraulique à haute pression atteint une cavité de plongeur de commande par l'intermédiaire d'un canal d'huile interne. Sous l'action de la pression du carburant haute pression et de l'huile servo-hydraulique, le plongeur d'ouverture/de fermeture (2) s'arrête à un point mort haut. Une ouverture de commande d'une électrovanne externe (8) est reliée de manière commutable à un canal d'huile à haute pression ou à un canal d'huile à basse pression par l'utilisation d'un signal de commande pour effectuer une commutation rapide, de façon à changer une pression de liquide dans une chambre de commande et une course vers le bas d'un plongeur de commande (9), et à mettre à son tour sous pression l'huile de commande servo-hydraulique dans la cavité de plongeur de commande et à pousser le plongeur d'ouverture/de fermeture (2) à se déplacer vers le bas, de telle sorte que l'ouverture ou la fermeture d'un canal d'huile d'extrémité inférieure du plongeur d'ouverture/de fermeture (2) est obtenue pour commander l'injection de carburant. L'injecteur de carburant permet d'obtenir efficacement une réponse rapide et stable de fonctionnement, et, en même temps, les parties pour la commande électronique et l'injection de carburant sont disposées indépendamment les unes des autres afin d'obtenir une modularisation pour la totalité de l'injecteur de carburant, facilitant ainsi l'entretien et la réparation.
PCT/CN2016/077377 2015-08-14 2016-03-25 Injecteur de carburant pour moteur diesel marin WO2017028537A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE212016000002.0U DE212016000002U1 (de) 2015-08-14 2016-03-25 Injektor für einen Dieselmotor für Schiffe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510501465.XA CN105134439B (zh) 2015-08-14 2015-08-14 一种船用柴油机喷油器
CN201510501465X 2015-08-14

Publications (1)

Publication Number Publication Date
WO2017028537A1 true WO2017028537A1 (fr) 2017-02-23

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PCT/CN2016/077377 WO2017028537A1 (fr) 2015-08-14 2016-03-25 Injecteur de carburant pour moteur diesel marin

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CN (1) CN105134439B (fr)
WO (1) WO2017028537A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108412653A (zh) * 2018-03-30 2018-08-17 中国重汽集团重庆燃油喷射系统有限公司 一种共轨喷油器
CN109736988A (zh) * 2018-12-31 2019-05-10 南岳电控（衡阳）工业技术股份有限公司 一种单缸柴油机用的电控单体喷油泵
CN111102112A (zh) * 2019-12-31 2020-05-05 南岳电控（衡阳）工业技术股份有限公司 一种船用单体泵泵腔内部压力调节结构
CN111412094A (zh) * 2020-03-17 2020-07-14 成都威特电喷有限责任公司 具有动态泄流控制的电控高压燃油喷射装置
CN111946510A (zh) * 2020-09-09 2020-11-17 中船动力研究院有限公司 一种喷射阀及发动机
CN112360656A (zh) * 2020-11-27 2021-02-12 中船动力研究院有限公司 一种高压式流体喷射装置及内燃机
CN112555474A (zh) * 2020-12-03 2021-03-26 重庆红江机械有限责任公司 一种机械式滑油控制安全阀组件
CN112761841A (zh) * 2020-12-23 2021-05-07 南岳电控（衡阳）工业技术股份有限公司 一种防止柴油机启动困难的喷油泵
CN114017221A (zh) * 2021-11-25 2022-02-08 重庆红江机械有限责任公司 一种电控喷油器
CN115387943A (zh) * 2022-09-01 2022-11-25 哈尔滨工程大学 一种适用于大功率柴油机的多喷射模式电控喷油器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134439B (zh) * 2015-08-14 2017-07-14 江苏科技大学 一种船用柴油机喷油器
CN106499547B (zh) * 2016-11-28 2019-04-12 哈尔滨工程大学 一种大流量船用气体/双燃料发动机气体燃料引流喷射及切断装置
CN110594029B (zh) * 2019-10-23 2023-08-15 重庆潍柴发动机有限公司 一种大功率柴油机燃油控制装置及其控制方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070075160A1 (en) * 2005-06-06 2007-04-05 Denso Corporation Fluid injection valve
CN1945003A (zh) * 2005-10-06 2007-04-11 株式会社日立制作所 燃料喷射阀
JP2011099358A (ja) * 2009-11-04 2011-05-19 Nippon Soken Inc 燃料噴射弁
DE102010030385A1 (de) * 2010-06-23 2011-12-29 Robert Bosch Gmbh Einspritzventil
CN102705120A (zh) * 2012-06-19 2012-10-03 哈尔滨工程大学 双燃料电控单体喷射器
CN103807067A (zh) * 2013-12-30 2014-05-21 沪东重机有限公司 一种外置电磁阀式电控喷油器
CN105134439A (zh) * 2015-08-14 2015-12-09 江苏科技大学 一种船用柴油机喷油器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2200058Y (zh) * 1994-01-26 1995-06-07 天津大学 柴油机电控高压喷油器
JP2000161175A (ja) * 1998-11-26 2000-06-13 Hitachi Ltd インジェクタおよび燃料噴射システム
JP2004251160A (ja) * 2003-02-19 2004-09-09 National Institute Of Advanced Industrial & Technology パルス式流量制御バルブ

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070075160A1 (en) * 2005-06-06 2007-04-05 Denso Corporation Fluid injection valve
CN1945003A (zh) * 2005-10-06 2007-04-11 株式会社日立制作所 燃料喷射阀
JP2011099358A (ja) * 2009-11-04 2011-05-19 Nippon Soken Inc 燃料噴射弁
DE102010030385A1 (de) * 2010-06-23 2011-12-29 Robert Bosch Gmbh Einspritzventil
CN102705120A (zh) * 2012-06-19 2012-10-03 哈尔滨工程大学 双燃料电控单体喷射器
CN103807067A (zh) * 2013-12-30 2014-05-21 沪东重机有限公司 一种外置电磁阀式电控喷油器
CN105134439A (zh) * 2015-08-14 2015-12-09 江苏科技大学 一种船用柴油机喷油器

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108412653A (zh) * 2018-03-30 2018-08-17 中国重汽集团重庆燃油喷射系统有限公司 一种共轨喷油器
CN108412653B (zh) * 2018-03-30 2023-11-03 重油高科电控燃油喷射系统(重庆)有限公司 一种共轨喷油器
CN109736988B (zh) * 2018-12-31 2023-08-29 南岳电控（衡阳）工业技术股份有限公司 一种单缸柴油机用的电控单体喷油泵
CN109736988A (zh) * 2018-12-31 2019-05-10 南岳电控（衡阳）工业技术股份有限公司 一种单缸柴油机用的电控单体喷油泵
CN111102112A (zh) * 2019-12-31 2020-05-05 南岳电控（衡阳）工业技术股份有限公司 一种船用单体泵泵腔内部压力调节结构
CN111412094A (zh) * 2020-03-17 2020-07-14 成都威特电喷有限责任公司 具有动态泄流控制的电控高压燃油喷射装置
CN111946510A (zh) * 2020-09-09 2020-11-17 中船动力研究院有限公司 一种喷射阀及发动机
CN112360656A (zh) * 2020-11-27 2021-02-12 中船动力研究院有限公司 一种高压式流体喷射装置及内燃机
CN112555474A (zh) * 2020-12-03 2021-03-26 重庆红江机械有限责任公司 一种机械式滑油控制安全阀组件
CN112555474B (zh) * 2020-12-03 2023-05-16 重庆红江机械有限责任公司 一种机械式滑油控制安全阀组件
CN112761841A (zh) * 2020-12-23 2021-05-07 南岳电控（衡阳）工业技术股份有限公司 一种防止柴油机启动困难的喷油泵
CN114017221A (zh) * 2021-11-25 2022-02-08 重庆红江机械有限责任公司 一种电控喷油器
CN114017221B (zh) * 2021-11-25 2024-02-06 重庆红江机械有限责任公司 一种电控喷油器
CN115387943A (zh) * 2022-09-01 2022-11-25 哈尔滨工程大学 一种适用于大功率柴油机的多喷射模式电控喷油器
CN115387943B (zh) * 2022-09-01 2024-02-06 哈尔滨工程大学 一种适用于大功率柴油机的多喷射模式电控喷油器

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