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EP1266135A1 - Electrovanne destinee a commander la soupape d'injection d'un moteur a combustion interne - Google Patents

Electrovanne destinee a commander la soupape d'injection d'un moteur a combustion interne

Info

Publication number
EP1266135A1
EP1266135A1 EP01995615A EP01995615A EP1266135A1 EP 1266135 A1 EP1266135 A1 EP 1266135A1 EP 01995615 A EP01995615 A EP 01995615A EP 01995615 A EP01995615 A EP 01995615A EP 1266135 A1 EP1266135 A1 EP 1266135A1
Authority
EP
European Patent Office
Prior art keywords
armature
actuator
plate
solenoid valve
anchor plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01995615A
Other languages
German (de)
English (en)
Other versions
EP1266135B1 (fr
Inventor
Uwe Grytz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1266135A1 publication Critical patent/EP1266135A1/fr
Application granted granted Critical
Publication of EP1266135B1 publication Critical patent/EP1266135B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • F02M63/0019—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of electromagnets or fixed armatures
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
    • F02M63/0022—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures the armature and the valve being allowed to move relatively to each other
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8092—Fuel injection apparatus manufacture, repair or assembly adjusting or calibration
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston

Definitions

  • Solenoid valve for controlling an injection valve of an internal combustion engine
  • the invention relates to a solenoid valve for controlling an injection valve of an internal combustion engine according to the preamble of claim 1.
  • Such a solenoid valve is used to control the fuel pressure in the control pressure chamber of an injection valve, for example in the injector of a common rail injection system.
  • the known solenoid valve has an electromagnet arranged in a housing part, a movable armature and a
  • the armature is therefore made in two parts with an armature bolt and an armature plate slidably mounted on the armature bolt, so that the armature plate moves further against the tension force of a return spring when the control valve member impacts the valve seat.
  • the return spring then conveys the anchor plate back to its starting position on a stop part of the anchor bolt.
  • the two-part design of the armature reduces the effectively braked mass and thus the kinetic energy of the armature impinging on the valve seat, but the armature plate can oscillate disadvantageously after the solenoid valve closes on the armature bolt.
  • the prior art uses a damping device which comprises a stationary part and a part moved with the anchor plate.
  • the stationary part is formed by an overstroke stop, which limits the maximum path by which the anchor plate can move on the anchor bolt.
  • the movable part is formed by a projection of the anchor plate facing the stationary part.
  • the overstroke stop can be formed by the end face of a slide piece guiding the anchor bolt and fixedly clamped in the housing of the solenoid valve or by a part upstream of the slide piece, for example an annular disk.
  • the problem with the known solenoid valves is the exact setting of the maximum glide path which the anchor plate on the anchor bolt should be available.
  • the maximum glide path also called overstroke, is set by replacing the overstroke disc, additional spacers or grinding the overstroke stop. Since they require a step-by-step setting, these solutions are complex and difficult to automate and extend the cycle times in production.
  • the solenoid valve according to the invention with the characterizing features of claim 1 avoids the disadvantages occurring in the prior art.
  • the proposed solution can be used inexpensively, in particular in automated line production.
  • the damping device can advantageously be formed by a hydraulic damping space between an end face of the actuator and a face of the part of the damping device that is fixed in the housing of the solenoid valve and that faces the end face of the actuator.
  • the actuator can have an axial passage opening for the passage of the anchor bolt on its end face facing the stationary part.
  • the actuator adjustable on the anchor plate via a thread.
  • the actuator is preferably designed as a screw member provided with an internal thread, which is screwed onto a section of the anchor plate which is penetrated by the anchor bolt and provided with an external thread.
  • the accuracy of the setting results from the thread pitch.
  • the axial adjustment path of the actuator is advantageously less than half a millimeter with respect to the end face of the armature plate facing the electromagnet with a full revolution of the actuator.
  • the very flat thread pitch advantageously causes the thread to self-lock so that the actuator is fixed in its end position.
  • the actuator can be locked in the set position on the anchor plate.
  • the return spring is in contact with a End in the housing of the solenoid valve and with its other end on the actuator.
  • FIG. 1 shows a cross section through the upper part of a from the
  • FIG. 2 shows a section from a cross section through the solenoid valve according to the invention with the actuator
  • FIG. 3 shows a section from a cross section through the
  • FIG. 1 shows the upper part of a fuel injection valve 1 known from the prior art, which is intended for use in a fuel injection system which is equipped with a high-pressure fuel reservoir which is continuously supplied with high-pressure fuel by a high-pressure feed pump
  • the fuel injector 1 shown has a valve housing 4 with a longitudinal bore 5, in which a valve piston 6 is arranged, which acts with its one end on a valve needle arranged in a nozzle body, not shown.
  • the valve needle is in a pressure chamber
  • valve needle 10 arranged, which is supplied via a pressure bore 8 with fuel under high pressure.
  • the valve needle is counteracted by the high fuel pressure in the pressure chamber, which constantly acts on a pressure shoulder of the valve needle, counter to the closing force
  • valve piston 6 is guided at its end facing away from the valve needle in a cylinder bore 11 which is introduced into a valve piece 12 which is inserted into the valve housing 4.
  • Valve piston 6 a control pressure chamber 14, which is connected via an inlet channel to a high-pressure fuel connection.
  • the inlet channel is essentially made up of three parts. A radially through the wall of the valve piece 12
  • »0 is the high-pressure fuel connection of a connecting piece 9 which can be screwed into the valve housing 4.
  • the annular space 16 is sealed off from the longitudinal bore 5 by a sealing ring 39.
  • the control pressure chamber 14 is connected to the high fuel prevailing in the high-pressure fuel reservoir via the inlet throttle 15.
  • valve piston 6 Coaxial to the valve piston 6 branches off from the control pressure chamber 14 a bore running in the valve piece 12, which forms a fuel outlet channel 17 provided with an outlet throttle 18, which opens into a relief chamber 19 which is connected to a low-pressure fuel
  • valve piece 12 is firmly clamped to the valve housing 4 in a flange region 22 via a screw member 23.
  • a valve seat 24 is formed in the conical part 21.
  • control valve member 25 of a solenoid valve 30 which controls the injection valve interacts.
  • the control valve member 25 is coupled to a two-part armature in the form of an armature bolt 27 and an armature plate 28, which armature is connected to an electromagnet 29 of the solenoid valve
  • the solenoid valve 30 comprises a housing part 60 surrounding the electromagnet, which is firmly connected to the valve housing 4 via screwable connecting means 7.
  • the anchor plate 28 is under the action of its inert mass against the biasing force
  • a return spring 35 is mounted dynamically displaceably on the anchor bolt 27 and is pressed by this return spring in the idle state against a stop part 26 fixed to the anchor bolt in an annular groove 49. With its other end, the return spring 35 is supported on the housing
  • Impact part 26 also moves the armature bolt 27 towards the electromagnet, as a result of which the drain channel 17 is opened towards the relief chamber 19.
  • annular shoulder 33 on the armature bolt 27, which on the flange 32 when the electromagnet is excited
  • the opening and closing of the injection valve is carried out as
  • the anchor bolt 27 is constantly acted upon by the closing spring 31 in the closing direction, so that the control valve member 25 rests on the valve seat 24 in the closed position when the electromagnet is not energized, and the control pressure chamber 14 is released.
  • Reverberation of the control valve member arises in that the impact of the anchor bolt on the valve seat causes an elastic deformation thereof, which acts as an energy store, part of the energy in turn being transferred to the control valve member, which is then together with the anchor bolt.
  • the known solenoid valve shown in FIG. 1 therefore uses a two-part armature with an armature plate 28 decoupled from the armature bolt 27. In this way, the total mass impinging on the valve seat can be reduced, but the armature
  • an overstroke stop arranged between the anchor plate 28 and the sliding sleeve 34 is used, which can be designed, for example, in the form of a disc part provided with a recess.
  • the overstroke can also by the
  • the solenoid valve according to the invention uses an armature plate 28 on whose side facing away from the electromagnet 29 an axially adjustable actuator 50 is arranged.
  • the actuator 50 can be relative the end face 41 of the armature plate 28 facing the electromagnet can be adjusted in the sliding direction of the armature plate 28.
  • the actuator 50 can be a sliding bushing, for example.
  • the actuator 50 is arranged on the anchor plate 28 so as to be adjustable by means of a thread and has an axial through opening 53 on its end face 51 facing the sliding sleeve 34 for the passage of the anchor bolt 27.
  • .0 member 50 is provided with an internal thread 46
  • Screw member is formed, which is screwed onto a section 42 of the anchor plate 28 which is penetrated by the anchor bolt 27 and provided with an external thread 45, which section 42 is a connecting piece projecting towards the sliding sleeve 34
  • .5 forms the anchor plate 28.
  • the actuator In the left part of Fig. 2, the actuator is shown in an initial position in which it is screwed onto the nozzle 42 until it stops. To set the maximum sliding path of the armature plate 28, the actuator is moved into the position shown in the right part of FIG.
  • Actuator 50 is initially unscrewed from the socket 42 of the anchor plate 28 until its end face 51 abuts the end face 52 of the slider 34. Then it is again a defined distance on the nozzle 42
  • the desired overtravel between the end face 51 of the actuator 50 and the end face 52 of the slider 34 being set precisely as a function of the thread pitch.
  • the actuator 50 can also be fixed and the anchor plate 28 rotated until the
  • the screw thread of the actuator preferably has a small thread pitch.
  • the axial adjustment path of the actuator 50 with respect to the end face 41 of the anchor plate 28 is 0.25 millimeter with a full rotation i5.
  • M7 x 0.25 according to DIN 134 Part 11 (12.86)
  • an overtravel distance can be achieved of approx. 15 ⁇ m can be set by rotating the actuator by approx. 21 °. Due to the flat pitch of the thread, self-locking of the thread can be assumed, so that the actuator 50 does not change over time. If necessary, additional locking means can be provided.
  • UV-curable locking agents can be used, for example, which are cured by means of a UV lamp after the overtravel distance has been set.
  • the end face 51 of the actuator 50 and the end face 52 of the stationary sliding sleeve 34 facing the end face 51 of the actuator form a hydraulic damping space between them, by means of which a reverberation of the anchor plate 28 is damped.
  • the return spring 35 is supported at one end on the flange 32 of the slider 34 and at the other end on the side 43 of the anchor plate 28 facing away from the end face 41 and surrounds the actuator 50, which is therefore difficult to access.
  • FIG. 3 A particularly advantageous embodiment in which the actuator 50 is more accessible is shown in FIG. 3.
  • the actuator 50 has, in the lateral extension of its end face 51 facing the sliding piece 34, a circumferential collar 55 on which the return spring 35 is supported with its end facing away from the sliding piece 34.
  • the left side in Fig. 3 shows the start position, the right side the set end position.
  • the actuator 50 in FIG. 3 is not surrounded by the return spring 35 and is therefore more accessible for the adjustment process.
  • the maximum sliding path of the anchor plate 28 on the anchor bolt 27 can optionally be set precisely by rotating the anchor plate with the actuator held or by rotating the actuator with the anchor plate held.

Landscapes

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

Abstract

Electrovanne destinée à commander la soupape d'injection d'un moteur à combustion interne, qui possède un électroaimant (29), un induit mobile doté d'une plaque (28) et d'un axe (27) et un obturateur (25) de vanne pilote se déplaçant avec l'induit et coopérant avec un siège (24) de soupape pour l'ouverture et la fermeture d'un canal d'écoulement (17) de carburant d'une chambre de pression pilote (14) de la soupape d'injection (1). La plaque (28) d'induit est montée coulissante sur l'axe (27) d'induit sous l'effet de sa masse inerte dans la direction de fermeture de l'obturateur (25) de vanne pilote contre la force élastique d'un ressort de rappel (35) agissant sur la plaque (28) d'induit. Selon la présente invention, la plaque d'induit est pourvue d'un élément de réglage qui est placé sur une partie (42) de ladite plaque (28) opposée à l'électroaimant (29) et qui peut être ajusté par rapport à une face (41) de la plaque d'induit orientée vers l'électroaimant, dans la direction de coulissement de la plaque (28) d'induit, ce qui permet de pouvoir ajuster de manière simple la trajectoire de coulissement maximale de la plaque (28) d'induit.
EP01995615A 2001-01-08 2001-12-15 Electrovanne destinee a commander la soupape d'injection d'un moteur a combustion interne Expired - Lifetime EP1266135B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10100422A DE10100422A1 (de) 2001-01-08 2001-01-08 Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine
DE10100422 2001-01-08
PCT/DE2001/004752 WO2002053905A1 (fr) 2001-01-08 2001-12-15 Electrovanne destinee a commander la soupape d'injection d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1266135A1 true EP1266135A1 (fr) 2002-12-18
EP1266135B1 EP1266135B1 (fr) 2004-08-04

Family

ID=7669901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01995615A Expired - Lifetime EP1266135B1 (fr) 2001-01-08 2001-12-15 Electrovanne destinee a commander la soupape d'injection d'un moteur a combustion interne

Country Status (5)

Country Link
US (1) US6688579B2 (fr)
EP (1) EP1266135B1 (fr)
JP (1) JP4083014B2 (fr)
DE (2) DE10100422A1 (fr)
WO (1) WO2002053905A1 (fr)

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DE102005020360A1 (de) * 2005-05-02 2006-11-09 Robert Bosch Gmbh Ventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine
DE102005053115A1 (de) * 2005-11-08 2007-05-10 Robert Bosch Gmbh Optimierte Ankergruppenführung für Magnetventile
US7819335B2 (en) * 2006-01-23 2010-10-26 Kimberly-Clark Worldwide, Inc. Control system and method for operating an ultrasonic liquid delivery device
US7735751B2 (en) * 2006-01-23 2010-06-15 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US7424883B2 (en) * 2006-01-23 2008-09-16 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US8028930B2 (en) * 2006-01-23 2011-10-04 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US7744015B2 (en) * 2006-01-23 2010-06-29 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US7963458B2 (en) 2006-01-23 2011-06-21 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US8191732B2 (en) 2006-01-23 2012-06-05 Kimberly-Clark Worldwide, Inc. Ultrasonic waveguide pump and method of pumping liquid
US7810743B2 (en) 2006-01-23 2010-10-12 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
DE102006045357A1 (de) * 2006-09-26 2008-04-03 Robert Bosch Gmbh Sicherungsscheibe für ein Magnetventil
DE602006005377D1 (de) * 2006-10-24 2009-04-09 Fiat Ricerche Magnetdosierventil für ein Brennstoffeinspritzventil
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DE602009001184D1 (de) * 2009-02-16 2011-06-09 Fiat Ricerche Verfahren zur Herstellung eines Kraftstoffeinspritzservoventils
EP2218903B1 (fr) * 2009-02-16 2011-04-27 C.R.F. Società Consortile per Azioni Procédé de fabrication d'une servovalve d'injecteur de carburant
DE102009051677B4 (de) * 2009-11-03 2020-03-26 Continental Automotive Gmbh Einspritzventil
EP2333297B1 (fr) * 2009-12-11 2013-03-20 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
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US9206921B1 (en) * 2013-01-02 2015-12-08 Jansen's Aircraft Systems Controls, Inc. Sealed solenoid and solenoid valve
CN103437928B (zh) * 2013-09-06 2016-05-04 中国第一汽车股份有限公司无锡油泵油嘴研究所 电磁阀式喷油器用控制阀组件
DE102013220877A1 (de) * 2013-10-15 2015-04-16 Continental Automotive Gmbh Ventil
US9644589B2 (en) * 2013-11-20 2017-05-09 Stanadyne Llc Debris diverter shield for fuel injector
FR3014994B1 (fr) * 2013-12-18 2016-08-05 Commissariat Energie Atomique Vanne pour circulation de fluide
EP3117091A4 (fr) 2014-03-10 2017-03-29 G.W. Lisk Company, Inc. Soupape d'injecteur
US9359985B2 (en) 2014-09-04 2016-06-07 Caterpillar Inc. Fluid injector actuator with resilient armature overtravel feature
CN104533679B (zh) * 2014-12-30 2016-09-07 南岳电控（衡阳）工业技术股份有限公司 一种喷油控制阀及使用此喷油控制阀的高压共轨燃油喷射系统
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Also Published As

Publication number Publication date
DE10100422A1 (de) 2002-07-11
US6688579B2 (en) 2004-02-10
JP2004516425A (ja) 2004-06-03
WO2002053905A1 (fr) 2002-07-11
DE50103110D1 (de) 2004-09-09
EP1266135B1 (fr) 2004-08-04
US20030178593A1 (en) 2003-09-25
JP4083014B2 (ja) 2008-04-30

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