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WO2014107978A1 - Mécanisme de soupape plate de commande d'injection d'injecteur de carburant à commande électronique - Google Patents

Mécanisme de soupape plate de commande d'injection d'injecteur de carburant à commande électronique 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)
Chinese (zh)
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 CN 201320011583 external-priority patent/CN203175733U/zh
Priority claimed from CN2013100086281A external-priority patent/CN103047061A/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/fr

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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from injectors
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-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
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • 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
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • F02M2200/28—Details 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

L'invention concerne un mécanisme de soupape plate de commande d'injection d'un injecteur de carburant à commande électronique. Une surface étanche est prévue au niveau de la surface d'extrémité inférieure d'une soupape plate de commande (8). Une chambre de commande (28), une ouverture d'étranglement (27) de carburant d'entrée de carburant, une ouverture d'entrée (29) de carburant de plaque à orifice, une ouverture de carburant de liaison (30), un orifice de retour (24) de carburant, et une ouverture de carburant inférieure (25) de plaque à orifice sont prévues sur une plaque à orifice (9). L'ouverture de l'ouverture d'étranglement (27) de carburant d'entrée de carburant est plus petite que l'ouverture de l'ouverture d'entrée (29) de carburant de plaque à orifice. L'ouverture de l'ouverture d'étranglement (27) de carburant d'entrée de carburant est plus petite que l'ouverture de l'ouverture de carburant de liaison (30). L'ouverture de l'orifice de retour (24) de carburant est plus petite que l'ouverture de l'ouverture de carburant inférieure (25) de plaque à orifice. L'ouverture d'entrée (29) de carburant de plaque à orifice est en communication avec l'ouverture d'étranglement (27) de carburant d'entrée de carburant. L'ouverture d'étranglement (27) de carburant d'entrée de carburant est en communication avec l'ouverture de carburant de liaison (30). L'ouverture de carburant de liaison (30) est en communication avec la chambre de commande (28). La chambre de commande (28) est en communication avec l'ouverture de carburant inférieure (25) de plaque à orifice. L'ouverture de carburant inférieure (25) de plaque à orifice est en communication avec l'orifice de retour (24) de carburant. Une rainure annulaire interne (23), une rainure annulaire externe (22) et une rainure de déviation d'écoulement (21) sont prévues soit sur la surface d'extrémité inférieure de la soupape plate de commande (8), soit sur la surface d'extrémité supérieure de la plaque à orifice (9). La rainure annulaire externe (22) est emmanchée sur l'extérieur de la rainure annulaire interne (23). La rainure annulaire externe (22) est en communication avec la rainure annulaire interne (23) par l'intermédiaire de la rainure de déviaiton d'écoulement (21). La rainure annulaire interne (23) est sélectivement en communication avec l'orifice de carburant de retour (24) sous un effet de surface d'étanchéité de la soupape plate de commande (8). Le mécanisme réduit la difficulté de traitement et augmente l'étanchéité et la productivité.
PCT/CN2013/085523 2013-01-10 2013-10-18 Mécanisme de soupape plate de commande d'injection d'injecteur de carburant à commande électronique WO2014107978A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN 201320011583 CN203175733U (zh) 2013-01-10 2013-01-10 电控喷油器的控制喷射平阀机构
CN201320011583.9 2013-01-10
CN201310008628.1 2013-01-10
CN2013100086281A CN103047061A (zh) 2013-01-10 2013-01-10 电控喷油器的控制喷射平阀机构

Publications (1)

Publication Number Publication Date
WO2014107978A1 true WO2014107978A1 (fr) 2014-07-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/085523 WO2014107978A1 (fr) 2013-01-10 2013-10-18 Mécanisme de soupape plate de commande d'injection d'injecteur de carburant à commande électronique

Country Status (1)

Country Link
WO (1) WO2014107978A1 (fr)

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
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
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
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
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
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
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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