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WO2014107978A1 - 电控喷油器的控制喷射平阀机构 - Google Patents

电控喷油器的控制喷射平阀机构 Download PDF

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Publication number
WO2014107978A1
WO2014107978A1 PCT/CN2013/085523 CN2013085523W WO2014107978A1 WO 2014107978 A1 WO2014107978 A1 WO 2014107978A1 CN 2013085523 W CN2013085523 W CN 2013085523W WO 2014107978 A1 WO2014107978 A1 WO 2014107978A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring groove
orifice plate
oil
control
hole
Prior art date
Application number
PCT/CN2013/085523
Other languages
English (en)
French (fr)
Inventor
肖亨琳
王永东
Original Assignee
无锡开普机械有限公司
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
Priority claimed from CN2013100086281A external-priority patent/CN103047061A/zh
Priority claimed from CN 201320011583 external-priority patent/CN203175733U/zh
Application filed by 无锡开普机械有限公司 filed Critical 无锡开普机械有限公司
Publication of WO2014107978A1 publication Critical patent/WO2014107978A1/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002Arrangement of leakage or drain conduits in or from injectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027Electrically actuated valves draining the chamber to release the closing pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16Sealing of fuel injection apparatus not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/28Details of throttles in fuel-injection apparatus

Definitions

  • the present invention relates to an electronically controlled injector component, and more particularly to an electrically controlled injector having a controlled injection manifold.
  • the electronically controlled high-pressure common rail fuel injection system has significant advantages in reducing engine noise, reducing emissions, and improving economy compared with the conventional mechanical fuel system, it has been widely used abroad. In China, the high-pressure common rail system has become an inevitable choice due to the increasing requirements of emission regulations.
  • the electronically controlled fuel injector is a key component of this system. It can realize the ideal control of the fuel injection law and can realize multiple injections.
  • the pressure difference between the two ends of the control piston is utilized.
  • this principle fully meets the requirements for the rapid response of the electronically controlled injector, in order to ensure that the control chamber at both ends of the control piston can be sealed under higher pressure, the relevant machining parts The requirements are very high. Because many parts are assembled together, the relative position is difficult to guarantee. In order to meet the requirements, the processing cost is high and the cutting rate is high.
  • An object of the present invention is to overcome the deficiencies in the prior art and to provide a control injection flat mechanism for an electronically controlled fuel injector which can reduce the difficulty of processing, improve sealing performance and productivity.
  • the electronically controlled injector has a control injection flat mechanism, which comprises a control flat and an orifice plate, the control lower flat end surface has a sealing surface; and an orifice plate
  • the upper opening is provided with a control room, an oil-saving oil-saving hole, an orifice plate oil inlet hole, and an oil connection.
  • the hole, the oil return orifice and the oil hole of the orifice plate, the hole diameter of the oil inlet hole is smaller than the hole diameter of the oil inlet hole of the orifice plate, and the hole diameter of the oil inlet hole is smaller than the hole diameter of the connecting oil hole, and the oil is returned.
  • the aperture of the orifice is smaller than the aperture of the oil hole under the orifice plate, the oil inlet hole of the orifice plate is connected with the oil inlet and the oil inlet hole, and the oil inlet and the oil hole are connected with the connection oil hole, and the oil hole is connected with the control chamber.
  • the control chamber communicates with the oil hole of the orifice plate, and the oil hole of the orifice plate communicates with the oil return orifice;
  • the inner ring groove and the outer ring are opened on the upper end surface of the control lower flat end or the orifice plate a groove and a guide groove, the outer ring groove is disposed outside the inner ring groove, the outer ring groove and the inner ring groove are communicated through the flow guiding groove, and the inner ring groove and the oil return orifice are controlled by the flat sealing surface Selectively connected.
  • the lower end surface of the control flat valve is a flat surface and is a sealing surface.
  • the inner ring groove, the outer ring groove and the guide groove are opened on the upper end surface of the orifice plate, and the outer ring groove is sleeved outside the inner ring groove, and the outer ring groove
  • the inner ring groove communicates with the inner flow groove, and the inner ring groove and the oil return throttle hole are selectively communicated under the control of the flat sealing surface.
  • the lower end surface of the control flat valve has a sealing surface
  • the upper end surface of the orifice plate is a flat surface
  • an inner ring groove, an outer ring groove and a guide groove are opened on the control lower flat end surface
  • the outer ring groove is sleeved in the inner ring groove
  • the outer ring groove and the inner ring groove communicate with each other through the guide groove, and the inner ring groove and the oil return orifice are selectively connected under the control of the flat sealing surface, and the inner ring groove is within the inner circle
  • the flat lower end surface is matched with the upper end surface of the orifice plate, and the control lower flat end surface between the outer ring of the inner ring groove and the inner circle of the outer ring groove is fitted to the upper end surface of the orifice plate,
  • the control lower flat end surface within the inner circle of the ring groove is fitted to the upper end surface of the orifice plate outside the oil return outlet end of the oil return orifice to form a seal ring band.
  • the inner diameter of the inner diameter of the sealing ring is ⁇ 0. 3mm.
  • the depth of the inner ring groove is smaller than the depth of the outer ring groove.
  • the plane between the outer circle of the inner ring groove and the inner circle of the outer ring groove is divided into 3-8 by the flow guiding groove.
  • the control sealing surface has a larger sealing surface size than the oil return outlet end of the oil return orifice.
  • Figure 1 is a schematic view of the installation and use of the present invention.
  • Fig. 2 is an enlarged schematic view showing the orifice plate of the first embodiment.
  • Figure 3 is a plan view of the orifice plate of Figure 2.
  • Fig. 4 is a schematic view showing the structure of the control unit in the first embodiment.
  • Fig. 5 is a partial structural view showing a second embodiment of the present invention.
  • Figure 6 is a plan view of the orifice plate of Figure 5.
  • Fig. 7 is a bottom plan view showing the control in the second embodiment.
  • Figure 8 is a cross-sectional view taken along line A_A of Figure 7.
  • the control injection flat mechanism of the electronic fuel injector includes a control flat 8 and an orifice plate 9, and the lower end surface of the control flat 8 has a sealing surface; a control chamber 28, an oil inlet and oil saving hole 27, an orifice plate oil inlet hole 29, a connecting oil hole 30, an oil returning orifice 24 and an orifice plate are opened on the orifice plate 9
  • the oil hole 25, the oil inlet throttle hole 27 has a smaller hole diameter than the orifice plate oil inlet hole 29, the oil inlet throttle hole 27 has a smaller hole diameter than the connecting oil hole 30, and the oil return orifice 24 has a smaller diameter than the section.
  • the hole 25 is connected, and the orifice hole lower oil hole 25 communicates with the oil return orifice 24; the inner ring groove 23 and the outer ring groove 22 are opened on the lower end surface of the control flat 8 or the upper end surface of the orifice plate 9
  • the guide groove 21, the outer ring groove 22 is sleeved outside the inner ring groove 23, the outer ring groove 22 and the inner ring groove 23 are communicated by the flow guiding groove 21, and the inner ring groove 23 and the oil returning orifice 24 are controlled Selectively connected under the action of a flat 8 sealing surface.
  • the lower end surface of the control flat 8 is generally flat and is a sealing surface.
  • the inner ring groove 23, the outer ring groove 22 and the guide groove 21 are opened on the upper end surface of the orifice plate 9, and the outer ring groove 22 is sleeved in the inner ring groove.
  • the outer ring groove 22 and the inner ring groove 23 communicate with each other through the guide groove 21, and the inner ring groove 23 and the oil return orifice 24 are selectively in communication under the control of the sealing surface of the flat 8.
  • the depth of the inner ring groove 23 is smaller than the depth of the outer ring groove 22.
  • the plane between the outer circle of the inner ring groove 23 and the inner circle of the outer ring groove 22 is divided into 3-8 by the flow guiding groove 21.
  • the size of the sealing surface of the control flat 8 is larger than the diameter of the oil return outlet end of the oil return orifice 24.
  • the lower end surface of the control flat 8 has a sealing surface
  • the upper end surface of the orifice plate 9 is a flat surface.
  • the control chamber 28 is opened on the orifice plate 9.
  • the aperture of the oil inlet hole 29 of the plate, the diameter of the oil inlet throttle hole 27 is smaller than the diameter of the connection oil hole 30, and the diameter of the oil return orifice 24 is small.
  • the groove 22 and the guide groove 21, the outer ring groove 22 is sleeved outside the inner ring groove 23, the outer ring groove 22 and the inner ring groove 23 are communicated by the flow guiding groove 21, the inner ring groove 23 and the oil return orifice 24 is selectively connected under the action of controlling the sealing surface of the flat 8, and the control flat 8 inner end of the inner ring groove 23 is fitted to the upper end surface of the orifice plate 9, and the inner ring groove 23 is outside.
  • the lower end surface of the control flat 8 between the circle and the inner circle of the outer ring groove 22 is fitted to the upper end surface of the orifice plate 9, and the lower end surface of the inner ring groove 23 is controlled to be flat 8 and back.
  • the oil orifice 22 is brought back to the upper end surface of the orifice plate 9 on the outer side of the oil outlet end to form a seal ring.
  • the inner diameter of the seal ring is ⁇ 0. 3mm.
  • the depth of the inner ring groove 23 is smaller than the depth of the outer ring groove 22.
  • the plane between the outer circle of the inner ring groove 23 and the inner circle of the outer ring groove 22 is divided into 3-8 by the flow guiding groove 21.
  • the size of the sealing surface of the control flat 8 is larger than the diameter of the oil return outlet end of the oil return orifice 24.
  • the injector of the electronically controlled injector of the present invention is installed in the injector body when in use, and the injector body is: an injector housing oil hole is opened in the injector housing 11 1. 1, fuel injection The housing oil hole 11.1 is in communication with the oil inlet interface on the injector housing 11, and a gasket ring 5 and a control wide member 6 are disposed in the injector housing 11, and the control coupling member 6 is located below the gasket ring 5.
  • the control wide-mouth member 6 is provided with a control opening member oil hole 6.1, and is disposed below the orifice plate 9
  • the control piston sleeve 10, the control piston sleeve 10 is provided with a control piston sleeve oil hole 26, the control piston sleeve oil hole 26 is connected with the orifice plate oil inlet hole 29, the injector housing oil hole 11.1 and the control piston sleeve
  • the oil hole 26 is in communication, and a control piston 34 is slidably inserted into the control piston sleeve 10.
  • the upper end surface of the control piston 34 selectively blocks the lower end portion of the orifice hole lower oil hole 25, and passes through the upper end of the injector housing 11
  • the electromagnet tight cap 3 is fixed with an electromagnet 1 , the electromagnet 1 has an electromagnetic wide spring 4 , an armature 7 is connected to the lower end of the electromagnetic wide spring 4 , and an armature flow path is provided on the armature 7 .
  • An armature rod is welded thereon, and an adjustment ball 20 is fixed at a lower end portion of the armature rod, and a control flat 8 is provided in the control width member 6 below the armature rod, and a spherical recess 33 is provided on the upper end surface of the control flat 8
  • a fuel injector tight cap 18 is fixed to the lower end of the injector housing 11, a fuel injector sleeve 17 is mounted in the fuel injector tight cap 18, and a fuel injection nozzle is disposed in the fuel injector sleeve 17, in the fuel injector sleeve 17.
  • the fuel nozzle sleeve oil hole is opened 17. 1.
  • the injector nozzle tight cap 18 above the injector nozzle sleeve 17 is installed with the middle.
  • the oil hole of the injector housing is 11.1 connected with the intermediate oil hole 15.1, the intermediate oil hole 15.1 and the nozzle cover
  • the oil hole 17.1 is connected, and the positioning pin 16 is fixed on the intermediate body 15;
  • the top end 14 is disposed in the lower end of the injector housing 11, and the lower end portion of the plunger 14 is opposite to the upper end portion of the injector, the ejector
  • the upper end portion of the 14 is opposite to the lower end portion of the control piston 34.
  • the top end of the top rod 14 is sleeved with a jack guide block 19, and the top rod 14 below the jack guide block 19 is provided with a pressure regulating spring 13 for regulating pressure.
  • the lower end portion of the spring 13 abuts against the lower end of the ejector pin 14.
  • a spring adjusting spacer 2 is provided in the electromagnet 1, and the upper end portion of the electromagnetic wide spring 4 is opposed to the spring adjusting spacer 2.
  • a pressure regulating pad 12 is sleeved on the jack 14 below the jack guide block 19, and the upper end of the pressure regulating spring 13 abuts against the pressure regulating pad 12.
  • the high-pressure fuel enters the orifice plate oil inlet hole 29 of the orifice plate 9 through the control piston sleeve oil hole 26 on the control piston sleeve 10, the oil inlet oil-saving hole 27, and the connection oil hole 30 enter the control chamber 28, and the control chamber 28 It is synthesized by the gap between the orifice plate 9 and the control piston sleeve 10, and its function is to store a certain pressure of fuel, so that the pressure acts on the control piston 34 to reciprocate in the axial direction, when the control is flat 8 lifted, The fuel in the control chamber 28 flows through the orifice lower oil hole 25 and the oil return orifice 24 on the orifice plate 9 into the inner ring groove 23, and then flows through the guide groove 21 to the larger outer ring.
  • the tank 22 is then uniformly discharged around the fuel; when the fuel in the control chamber 28 passes through the orifice plate lowering hole 25 on the orifice plate 9, the fuel pressure of the control chamber 28 is lowered, and the orifice plate 9 is connected.
  • the amount of oil entering the control chamber 28 of the oil hole 30 is smaller than the amount of oil flowing out through the oil hole 25 of the orifice plate on the orifice plate 9.
  • control piston 34 moves in the direction of the orifice plate 9, when the control is flat
  • the lower end surface of the control flat 8 is fitted to the upper end surface of the orifice plate 9, and the fuel outflow passage in the control chamber 28 is cut off, and enters the control chamber 28 through the connecting oil hole 30 of the orifice plate 9.
  • the control piston 34 is pushed in a direction away from the orifice plate 9, and the entire control is completed to complete a movement. Repeat this cycle during its work.

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

Abstract

一种电控喷油器的控制喷射平阀机构,控制平阀(8)的下端面具有密封面;在节流孔板(9)上开设有控制室(28)、进油节油孔(27)、节流孔板进油孔(29)、连接油孔(30)、回油节流孔(24)与节流孔板下油孔(25),进油节油孔(27)的孔径小于节流孔板进油孔(29)的孔径,进油节油孔(27)的孔径小于连接油孔(30)的孔径,回油节流孔(24)的孔径小于节流孔板下油孔(25)的孔径,节流孔板进油孔(29)与进油节油孔连通,进油节油孔(27)与连接油孔(30)连通,连接油孔(30)与控制室(28)连通,控制室(28)与节流孔板下油孔(25)连通,节流孔板下油孔(25)与回油节流孔(24)连通;在控制平阀(8)的下端面或者节流孔板(9)的上端面开设有内环槽(23)、外环槽(22)与导流槽(21),外环槽(22)套在内环槽(23)的外部,外环槽(22)与内环槽(23)通过导流槽(21)连通,内环槽(23)与所述的回油节流孔(24)在控制平阀(8)的密封面作用下选择性连通。该机构降低了加工难度,提高了密封性和生产率。

Description

电控喷油器的控制喷射平闽机构
技术领域
本发明涉及一种电控喷油器部件,尤其是一种电控喷油器的控制喷 射平阔机构。
背景技术
由于电控高压共轨燃油喷射系统与传统机械式燃油系统相比, 具有降低发动机噪音、 降低排放、 提高经济性等显著优势, 因此在国外 得到了广泛应用。 在国内, 由于排放法规的要求不断提升, 高压共轨系 统已成为必然的选择。
电控喷油器是此系统的关键部件,它能实现对喷油规律的理想化控 制, 能够实现多次喷射, 为了实现电控喷油器的快速开启和关闭, 利用 控制活塞两端的压力差来控制开启和关闭, 根据液体的特性, 利用这一 原理完全满足对电控喷油器的快速反映要求,为了保证控制活塞两端的 控制室在更高的压力下能够密封, 对相关的加工件要求很高, 由于有很 多零件组装在一起, 相对位置度很难保证, 为了达到要求, 加工成本很 高, 切废品率很高。
发明内容
本发明的目的是克服现有技术中存在的不足,提供一种可以降低加 工难度、 提高密封性和生产率的电控喷油器的控制喷射平阔机构。
按照本发明提供的技术方案, 所述电控喷油器的控制喷射平阔机 构, 它包括控制平阔与节流孔板, 所述控制平阔的下端面具有密封面; 在节流孔板的上开设有控制室、 进油节油孔、 节流孔板进油孔、 连接油 孔、 回油节流孔与节流孔板下油孔, 进油节油孔的孔径小于节流孔板进 油孔的孔径, 进油节油孔的孔径小于连接油孔的孔径, 回油节流孔的孔 径小于节流孔板下油孔的孔径, 节流孔板进油孔与进油节油孔连通, 进 油节油孔与连接油孔连通, 连接油孔与控制室连通, 控制室与节流孔板 下油孔连通, 节流孔板下油孔与回油节流孔连通; 在控制平阔的下端面 或者节流孔板的上端面开设有内环槽、外环槽与导流槽, 外环槽套在内 环槽的外部, 外环槽与内环槽通过导流槽连通, 内环槽与所述的回油节 流孔在控制平阔的密封面作用下选择性连通。
控制平阀的下端面整体为平面且为密封面,在节流孔板的上端面开 设有内环槽、 外环槽与导流槽, 外环槽套在内环槽的外部, 外环槽与内 环槽通过导流槽连通, 内环槽与所述的回油节流孔在控制平阔的密封面 作用下选择性连通。
控制平阀的下端面具有密封面,节流孔板的上端面为平面,在控制 平阔的下端面开设有内环槽、外环槽与导流槽, 外环槽套在内环槽的外 部, 外环槽与内环槽通过导流槽连通, 内环槽与所述的回油节流孔在控 制平阔的密封面作用下选择性连通,且内环槽的内圆之内的控制平阔下 端面与节流孔板的上端面贴合, 内环槽的外圆与外环槽的内圆之间的控 制平阔的下端面与节流孔板的上端面贴合, 内环槽的内圆之内的控制平 阔的下端面与回油节流孔回油出口端外侧的节流孔板的上端面贴合形 成密封环带。
所述密封环带的外圆直径 0. 8<mm,且密封环带的内圆直径≥0. 3mm。 所述内环槽的深度小于外环槽的深度。 所述内环槽的外圆与外环槽的内圆之间的平面被导流槽分成 3-8 等分。
所述控制平阔的密封面尺寸大于回油节流孔的回油出口端直径。 本发明降低了加工难度, 提高了密封性和生产率。
附图说明
图 1是本发明的安装使用示意图。
图 2是实施例 1中节流孔板的放大示意图。
图 3是图 2中节流孔板的俯视图。
图 4是实施例 1中控制平阔的结构示意图。
图 5是本发明实施例 2的局部结构示意图。
图 6是图 5中节流孔板的俯视图。
图 7是实施例 2中控制平阔的仰视图。
图 8是图 7的 A_A剖视图。
具体实施方式
下面结合具体实施例对本发明作进一歩说明。
实施例 1
如图 1、 图 2、 图 3和图 4所示, 电控喷油器的控制喷射平阔机构, 它包括控制平阔 8与节流孔板 9,所述控制平阔 8的下端面具有密封面; 在节流孔板 9的上开设有控制室 28、 进油节油孔 27、 节流孔板进油孔 29、连接油孔 30、回油节流孔 24与节流孔板下油孔 25,进油节油孔 27 的孔径小于节流孔板进油孔 29的孔径,进油节油孔 27的孔径小于连接 油孔 30的孔径,回油节流孔 24的孔径小于节流孔板下油孔 25的孔径, 节流孔板进油孔 29与进油节油孔 27连通, 进油节油孔 27与连接油孔 30连通, 连接油孔 30与控制室 28连通, 控制室 28与节流孔板下油孔 25连通,节流孔板下油孔 25与回油节流孔 24连通;在控制平阔 8的下 端面或者节流孔板 9的上端面开设有内环槽 23、外环槽 22与导流槽 21, 外环槽 22套在内环槽 23的外部,外环槽 22与内环槽 23通过导流槽 21 连通, 内环槽 23与所述的回油节流孔 24在控制平阔 8的密封面作用下 选择性连通。
控制平阔 8的下端面整体为平面且为密封面,在节流孔板 9的上端 面开设有内环槽 23、 外环槽 22与导流槽 21, 外环槽 22套在内环槽 23 的外部, 外环槽 22与内环槽 23通过导流槽 21连通, 内环槽 23与所述 的回油节流孔 24在控制平阔 8的密封面作用下选择性连通。
所述内环槽 23的深度小于外环槽 22的深度。
所述内环槽 23的外圆与外环槽 22的内圆之间的平面被导流槽 21 分成 3-8等分。
所述控制平阔 8的密封面尺寸大于回油节流孔 24的回油出口端直 径。
实施例 2
如图 5、 图 6、 图 7和图 8所示, 控制平阔 8的下端面具有密封面, 节流孔板 9的上端面为平面,在节流孔板 9的上开设有控制室 28、进油 节油孔 27、节流孔板进油孔 29、连接油孔 30、回油节流孔 24与节流孔 板下油孔 25,进油节油孔 27的孔径小于节流孔板进油孔 29的孔径,进 油节油孔 27的孔径小于连接油孔 30的孔径, 回油节流孔 24的孔径小 于节流孔板下油孔 25的孔径, 节流孔板进油孔 29与进油节油孔 27连 通,进油节油孔 27与连接油孔 30连通,连接油孔 30与控制室 28连通, 控制室 28与节流孔板下油孔 25连通, 节流孔板下油孔 25与回油节流 孔 24连通;在控制平阔 8的下端面开设有内环槽 23、外环槽 22与导流 槽 21,外环槽 22套在内环槽 23的外部,外环槽 22与内环槽 23通过导 流槽 21连通, 内环槽 23与所述的回油节流孔 24在控制平阔 8的密封 面作用下选择性连通, 且内环槽 23的内圆之内的控制平阔 8下端面与 节流孔板 9的上端面贴合, 内环槽 23的外圆与外环槽 22的内圆之间的 控制平阔 8的下端面与节流孔板 9的上端面贴合, 内环槽 23的内圆之 内的控制平阔 8的下端面与回油节流孔 24回油出口端外侧的节流孔板 9 的上端面贴合形成密封环带。
所述密封环带的外圆直径≤0. 8mm, 且密封环带的内圆直径≥0. 3mm。 所述内环槽 23的深度小于外环槽 22的深度。
所述内环槽 23的外圆与外环槽 22的内圆之间的平面被导流槽 21 分成 3-8等分。
所述控制平阔 8的密封面尺寸大于回油节流孔 24的回油出口端直 径。
本发明的电控喷油器的控制喷射平阔机构使用时安装在喷油器体 内, 喷油器体为: 在喷油器外壳 11内开设有喷油器外壳油孔 11. 1, 喷 油器外壳油孔 11. 1与喷油器外壳 11上的进油接口连通,在喷油器外壳 11内设有衬环 5与控制阔偶件 6, 控制阔偶件 6位于衬环 5的下方, 在 控制阔偶件 6上开设有控制阔偶件油孔 6. 1, 在节流孔板 9的下方设有 控制活塞套 10, 在控制活塞套 10上开设有控制活塞套油孔 26, 控制活 塞套油孔 26与节流孔板进油孔 29连通, 喷油器外壳油孔 11. 1与控制 活塞套油孔 26连通,在控制活塞套 10内滑动插接有控制活塞 34,控制 活塞 34的上端面选择性封堵节流孔板下油孔 25的下端部,在喷油器外 壳 11的上端通过电磁铁紧帽 3固定有电磁铁 1,电磁铁 1内具有电磁阔 弹簧 4, 在电磁阔弹簧 4的下端部连接有衔铁 7, 在衔铁 7上开设有衔 铁流道 7. 1, 在衔铁 7上焊接有衔铁杆, 在衔铁杆的下端部固定有调整 球 20, 在衔铁杆下方的控制阔偶件 6内设有控制平阔 8, 控制平阔 8的 上端面设有球面凹陷 33,在喷油器外壳 11的下端固定有喷油嘴紧帽 18, 在喷油嘴紧帽 18内安装有喷油嘴套 17, 在喷油嘴套 17内设有喷油嘴, 在喷油嘴套 17内开设有喷油嘴套油孔 17. 1,在喷油嘴套 17上方的喷油 嘴紧帽 18内安装有中间体 15,在中间体 15内开设有中间体油孔 15. 1, 所述喷油器外壳油孔 11. 1与中间体油孔 15. 1连通, 中间体油孔 15. 1 与喷油嘴套油孔 17. 1连通,在中间体 15上固定有定位销 16;在喷油器 外壳 11的下端内设有顶杆 14,顶杆 14的下端部与喷油嘴的上端部相抵, 顶杆 14的上端部与控制活塞 34的下端部相抵, 在顶杆 14的上端外部 套接有顶杆导向块 19,在顶杆导向块 19下方的顶杆 14上设有调压弹簧 13, 调压弹簧 13的下端部与顶杆 14下端凸环相抵。
在电磁铁 1内设有弹簧调整垫片 2, 所述电磁阔弹簧 4的上端部与 弹簧调整垫片 2相抵。
在顶杆导向块 19下方的顶杆 14上套接有调压垫片 12,所述调压弹 簧 13的上端部与调压垫片 12相抵。 高压燃油通过控制活塞套 10上的控制活塞套油孔 26进入节流孔板 9的节流孔板进油孔 29、 进油节油孔 27、 连接油孔 30进入控制室 28, 控制室 28是由节流孔板 9和控制活塞套 10之间的间隙合成,其作用是 其内存一定压力的燃油,使压力作用在控制活塞 34轴向方向往复运动, 当控制平阔 8抬起时, 控制室 28内的燃油通过节流孔板 9上的节流孔 板下油孔 25、 回油节流孔 24流到内环槽 23内, 再经导流槽 21流到更 大的外环槽 22, 然后燃油周围均匀流出; 当控制室 28内的燃油通过节 流孔板 9上的节流孔板下油孔 25处, 控制室 28的燃油压力下降, 而节 流孔板 9的连接油孔 30进入控制室 28燃油量小于通过节流孔板 9上的 节流孔板下油孔 25流出的油量, 在控制平阔 8抬起时, 控制室 28内油 压无法建立, 这样在控制活塞 34另一端力的作用下, 控制活塞 34向节 流孔板 9的方向运动, 当控制平阔 8落下, 控制平阔 8的下端面与节流 孔板 9的上端面贴合, 控制室 28内的燃油流出通道被截断, 通过节流 孔板 9的连接油孔 30进入控制室 28燃油不断增多, 当控制室 28燃油 压力达到一定值时, 控制活塞 34被推着远离节流孔板 9的方向运动, 此时整个控制阔完成一个运动。 在其工作过程中, 重复这样的循环。

Claims

权 利 要 求
1. 一种电控喷油器的控制喷射平阔机构, 其特征是: 它包括控制平阔 (8) 与节流孔板 (9), 所述控制平阔 (8 ) 的下端面具有密封面; 在节流孔板 (9) 的上开设有控制室 (28)、 进油节油孔(27)、 节流 孔板进油孔 (29)、 连接油孔 (30)、 回油节流孔 (24) 与节流孔板 下油孔 (25), 进油节油孔 (27) 的孔径小于节流孔板进油孔 (29) 的孔径, 进油节油孔 (27) 的孔径小于连接油孔 (30) 的孔径, 回 油节流孔 (24) 的孔径小于节流孔板下油孔 (25) 的孔径, 节流孔 板进油孔 (29 ) 与进油节油孔 (27) 连通, 进油节油孔 (27) 与连 接油孔 (30) 连通, 连接油孔 (30) 与控制室 (28) 连通, 控制室 (28) 与节流孔板下油孔 (25) 连通, 节流孔板下油孔 (25) 与回 油节流孔 (24) 连通; 在控制平阔 (8 ) 的下端面或者节流孔板 (9) 的上端面开设有内环槽 (23)、 外环槽 (22 ) 与导流槽 (21 ), 外环 槽 (22 ) 套在内环槽 (23) 的外部, 外环槽 (22 ) 与内环槽 (23 ) 通过导流槽 (21 ) 连通, 内环槽 (23) 与所述的回油节流孔 (24) 在控制平阔 (8) 的密封面作用下选择性连通。
2. 如权利要求 1所述的电控喷油器的控制喷射平阔机构, 其特征是: 控制平阔 (8 ) 的下端面整体为平面且为密封面, 在节流孔板 (9) 的上端面开设有内环槽 (23)、 外环槽 (22 ) 与导流槽 (21 ), 外环 槽 (22 ) 套在内环槽 (23) 的外部, 外环槽 (22 ) 与内环槽 (23 ) 通过导流槽 (21 ) 连通, 内环槽 (23) 与所述的回油节流孔 (24) 在控制平阔 (8) 的密封面作用下选择性连通。
3. 如权利要求 1所述的电控喷油器的控制喷射平阔机构, 其特征是: 控制平阔 (8) 的下端面具有密封面, 节流孔板 (9) 的上端面为平 面, 在控制平阔 (8) 的下端面开设有内环槽 (23)、 外环槽 (22) 与导流槽(21),外环槽 (22)套在内环槽 (23)的外部,外环槽 (22) 与内环槽 (23) 通过导流槽 (21) 连通, 内环槽 (23) 与所述的回 油节流孔(24) 在控制平阔 (8) 的密封面作用下选择性连通, 且内 环槽 (23) 的内圆之内的控制平阔 (8) 下端面与节流孔板 (9) 的 上端面贴合, 内环槽 (23) 的外圆与外环槽 (22) 的内圆之间的控 制平阔 (8) 的下端面与节流孔板 (9) 的上端面贴合, 内环槽 (23) 的内圆之内的控制平阔 (8) 的下端面与回油节流孔(24) 回油出口 端外侧的节流孔板 (9) 的上端面贴合形成密封环带。
4. 如权利要求 3所述的电控喷油器的控制喷射平阔机构, 其特征是: 所述密封环带的外圆直径≤0.8mm, 且密封环带的内圆直径≥0.3mm。
5. 如权利要求 1所述的电控喷油器的控制喷射平阔机构, 其特征是: 所述内环槽 (23) 的深度小于外环槽 (22) 的深度。
6. 如权利要求 1所述的电控喷油器的控制喷射平阔机构, 其特征是: 所述内环槽 (23) 的外圆与外环槽 (22) 的内圆之间的平面被导流 槽 (21) 分成 3-8等分。
7. 如权利要求 1所述的电控喷油器的控制喷射平阔机构, 其特征是: 所述控制平阔 (8) 的密封面尺寸大于回油节流孔(24) 的回油出口 端直径。
PCT/CN2013/085523 2013-01-10 2013-10-18 电控喷油器的控制喷射平阀机构 WO2014107978A1 (zh)

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030111558A1 (en) * 2001-10-12 2003-06-19 Mario Ricco Internal combustion engine fuel injector having an electromagnetic metering valve
JP2010174849A (ja) * 2009-02-02 2010-08-12 Denso Corp 電磁弁および燃料噴射弁
CN101818711A (zh) * 2010-06-03 2010-09-01 无锡开普动力有限公司 电控喷油器的喷射阀
CN101907050A (zh) * 2009-06-02 2010-12-08 株式会社电装 燃料喷射设备
CN102230435A (zh) * 2011-06-14 2011-11-02 常州博瑞油泵油嘴有限公司 平面启闭型柴油机高压共轨喷油器
CN103047061A (zh) * 2013-01-10 2013-04-17 无锡开普机械有限公司 电控喷油器的控制喷射平阀机构
CN103047062A (zh) * 2013-01-10 2013-04-17 无锡开普机械有限公司 喷射阀的电控喷油器
CN103047060A (zh) * 2013-01-10 2013-04-17 无锡开普机械有限公司 电控喷油器的控制喷射阀
CN203098110U (zh) * 2013-01-10 2013-07-31 无锡开普机械有限公司 喷射阀的电控喷油器
CN203098111U (zh) * 2013-01-10 2013-07-31 无锡开普机械有限公司 电控喷油器的控制喷射阀
CN203175733U (zh) * 2013-01-10 2013-09-04 无锡开普机械有限公司 电控喷油器的控制喷射平阀机构

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030111558A1 (en) * 2001-10-12 2003-06-19 Mario Ricco Internal combustion engine fuel injector having an electromagnetic metering valve
JP2010174849A (ja) * 2009-02-02 2010-08-12 Denso Corp 電磁弁および燃料噴射弁
CN101907050A (zh) * 2009-06-02 2010-12-08 株式会社电装 燃料喷射设备
CN101818711A (zh) * 2010-06-03 2010-09-01 无锡开普动力有限公司 电控喷油器的喷射阀
CN102230435A (zh) * 2011-06-14 2011-11-02 常州博瑞油泵油嘴有限公司 平面启闭型柴油机高压共轨喷油器
CN103047061A (zh) * 2013-01-10 2013-04-17 无锡开普机械有限公司 电控喷油器的控制喷射平阀机构
CN103047062A (zh) * 2013-01-10 2013-04-17 无锡开普机械有限公司 喷射阀的电控喷油器
CN103047060A (zh) * 2013-01-10 2013-04-17 无锡开普机械有限公司 电控喷油器的控制喷射阀
CN203098110U (zh) * 2013-01-10 2013-07-31 无锡开普机械有限公司 喷射阀的电控喷油器
CN203098111U (zh) * 2013-01-10 2013-07-31 无锡开普机械有限公司 电控喷油器的控制喷射阀
CN203175733U (zh) * 2013-01-10 2013-09-04 无锡开普机械有限公司 电控喷油器的控制喷射平阀机构

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