WO2008037523A1 - Bague d'arrêt pour électrovanne - Google Patents

Bague d'arrêt pour électrovanne Download PDF

Info

Publication number
WO2008037523A1
WO2008037523A1 PCT/EP2007/057786 EP2007057786W WO2008037523A1 WO 2008037523 A1 WO2008037523 A1 WO 2008037523A1 EP 2007057786 W EP2007057786 W EP 2007057786W WO 2008037523 A1 WO2008037523 A1 WO 2008037523A1
Authority
WO
WIPO (PCT)
Prior art keywords
anchor bolt
armature
fuel injector
lock washer
valve
Prior art date
Application number
PCT/EP2007/057786
Other languages
German (de)
English (en)
Inventor
Juergen Hanneke
Reinhard Tampe
Friedrich Howey
Willibald Ziegmann
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 WO2008037523A1 publication Critical patent/WO2008037523A1/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
    • 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
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • 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
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • 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

  • DE 196 50 865 Al relates to a solenoid valve for controlling the fuel pressure in a control chamber of an injection valve, such as a common rail injection system. Via the fuel pressure in the control chamber, a stroke movement of a valve piston is controlled, with which an injection opening of the injection valve is opened or closed.
  • the solenoid valve comprises an electromagnet, a movable armature and a valve member which is moved with the armature and acted upon by a valve closing spring in the closing direction and which cooperates with the valve seat of the magnet valve and thus controls the fuel flow out of the control chamber.
  • the anchor plate has a defined overtravel stop on the armature guide, which removes the kinetic energy of the movement of the armature after the electromagnet is switched off the system.
  • the anchor bolt is stopped in its movement.
  • the anchor plate can still fly to the overstroke (ballistic operating phase) before it hits the overstroke stop.
  • the part of the kinetic energy resulting from the movement of the anchor plate is dissipated in the injector body.
  • valve spring exerting a closing force on the anchor bolt introduces lateral force components into the assembly of a two-part armature with an anchor plate and an anchor bolt. Due to the guiding play between the armature guide and the anchor bolt, this leads to a tilting of the anchor bolt in the armature guide. In the case of a strong lateral force, this tilting can also be present in the upper position of the anchor bolt when the electromagnet is energized, since an anchor bolt stop can rest on one side. Thus, part of the set armature stroke, i. the movement of the anchor bolt in operation, not fully utilized. This leads to a lower injection quantity of fuel into the combustion chamber of an internal combustion engine.
  • the magnet assembly comprises a ball designed as a closing element, a ball-shaped ball guide, which is attached to the lower end of an anchor bolt, an anchor spring, a movable anchor bolt on the anchor plate and a shim for the armature stroke. Furthermore, a locking washer is provided at the upper end of the anchor bolt, which in turn is enclosed by a securing sleeve. Over the course of the operation of the solenoid valve, the securing sleeve enclosing the securing sleeve tends to suffer from wear such as, for example, flaring at the lower end, which is not acted upon by the valve spring, against which the anchor plate strikes and for burr formation.
  • micro-cracks arise in the material of the securing sleeve, which entail the risk of tearing open of the securing sleeve, so that the securing sleeve securing the securing disk can become ineffective.
  • the solution proposed according to the invention is based on the object of achieving a reduction in the number of parts installed in a solenoid valve as well as a simplification of the assembly outlay and, in particular, of reducing dynamic mass forces. Furthermore, wear phenomena that can be seen within the solenoid valve over its operating time to be minimized.
  • the invention proposed to be applied to the anchor bolt washer is designed so that it is self-locking executed by the inherent spring action.
  • the lock washer proposed according to the invention is one which is designed as an interrupted disk, the interruption of which is designed such that it has an undersize in relation to the groove on the anchor bolt, in which the lock washer is latched.
  • the securing disk is preferably designed with respect to its opening in such a way that the end surfaces delimiting the opening in the periphery of the securing disk are planed in order to insert the securing disk during lateral sliding onto the groove formed on the upper end of the anchor bolt of a two-part armature.
  • the maximum expansion of the anchor bolt to be mounted, according to the invention proposed locking washer is defined by the difference of groove diameter on the anchor bolt and width of the two the opening on the locking disk limiting plan sides.
  • the anchor bolt is preferably accommodated in a counter support that supports it. This counteracts distortion of the armature assembly.
  • the lock washer proposed according to the invention can also be used by retrofitting by means of retrofitting to existing fuel injectors which are actuated by means of a solenoid valve and which have a two-part armature.
  • Decisive for the security function of the fiction, proposed according to the backup disk is the state of the two preferably plan trained open sides that limit the opening in the periphery of the lock washer. This distance is to be designed so that a captive recording of the lock washer in the groove in the upper part of the anchor bolt is possible.
  • FIG. 1 shows a fuel injector with a two-part armature assembly, which is actuated by a solenoid valve
  • Figure 2 is a plan view of the invention erf ⁇ ndungshiel proposed lock washer and
  • Figure 3 shows a section through the lock washer according to Figure 2 along the section III - III.
  • Figure 1 is a section through a fuel injector to remove, which is actuated by means of a solenoid valve.
  • FIG. 1 shows an anchor bolt 10, which is enclosed by an armature guide 12.
  • a solenoid valve which comprises an electromagnet 32.
  • Below the electromagnet 32 is a two-piece anchor assembly comprising an anchor bolt 10 and an anchor plate 70.
  • the anchor bolt 10 is guided in an armature guide 12.
  • Reference numeral 14 denotes an injector longitudinal axis.
  • the anchor bolt 10 is enclosed by an elongated armature guide 28.
  • the anchor plate 70 is guided on the outer circumferential surface of a neck 29, the elongated armature guide 28.
  • the anchor bolt 10 is acted upon by a valve spring 24.
  • a groove 22 is formed in the upper region, in which a lock washer 34 is inserted.
  • the lock washer 34 in turn is enclosed by a securing sleeve 26.
  • the anchor plate 70 as shown in Figure 1 is biased by an armature spring 36, which in turn is supported on a disc-shaped projection of the elongated armature guide 28.
  • the extended armature guide 28 is fastened in the injector body 30 by means of a clamping screw 52.
  • Below the elongated armature guide 28 is a classified shim 56 which rests on an end face 58 of a valve piece. About the classified shim 56 of the stroke of the bipartite armature 10, 70 is defined.
  • the movement of the anchor plate 70 upwards is limited by the lock washer 34.
  • a disc-shaped stop 38 of the anchor bolt 10 At the opposite end of the locking washer 34 of the anchor bolt 10 is a disc-shaped stop 38 of the anchor bolt 10, which abuts against the lower end face of the elongated armature guide 28.
  • the disk-shaped stop 38 at the lower end of the anchor bolt 10 is enclosed by the classified adjustment ring 56.
  • the classified adjusting ring 56 in turn rests on the end face 58 of the valve piece 59, which merges into an injection valve member guide on.
  • a control chamber 48 Within the valve piece 59, a control chamber 48 is formed, which is pressurized with fuel under high pressure via an inlet throttle 50 and via a discharge throttle 46 is depressurized.
  • the outlet throttle 46 can be released or closed by a closing element 42, which is of spherical design in the embodiment shown in FIG.
  • a seat 44 is formed in the region of the outlet throttle 46 for the closing element 42 of spherical design in this embodiment.
  • the ball-shaped closing element 42 is enclosed by a guide body 40, which is subjected to force by the lower end of the anchor bolt 10.
  • Reference numeral 62 designates the seat of the valve piece 59 with injection valve member guide in the injector body 30.
  • the illustration according to FIG. 2 shows a plan view of the securing element proposed according to the invention for securing the armature plate of a multi-part armature assembly.
  • FIG. 2 shows that a lock washer 80 has an opening 82.
  • the opening 82 is formed in a width 84 which is smaller than the diameter of the receiving groove 22 formed in the upper region of the anchor bolt 10 in FIG.
  • the securing washer 34 which is inserted into the receiving groove 22, is secured by the securing sleeve 26.
  • the securing sleeve 26 causes the locking washer 34 remains compressed in the circumferential direction according to the illustration in Figure 1 in the mounted state and thus is taken captive on the anchor bolt 10 by the securing sleeve 26.
  • the lock washer 80 In contrast to the lock washer 34 shown in FIG. 1, the lock washer 80 according to the plan view in FIG. 2 has a width 84 which is smaller than the diameter of the receiving groove 22 measured at the groove bottom of the receiving groove 22 on the anchor bolt 10.
  • the opening is preferred 82 limited in the present invention proposed locking washer 80 by a first plan side 86 and a second plan side 88 of the lock washer 80.
  • a bearing On the inner peripheral surface of Figure 2 in plan view illustrated according to the invention proposed backup washer, a bearing at least a semicircular extension bearing surface 90 is formed.
  • the contact surface 90 has an inner diameter 92 which exceeds the width 84 of the opening 82 in the lock washer 80 proposed according to the invention.
  • FIG. 3 shows the cutting profile IH-III entered in the lock washer according to the illustration in FIG.
  • the contact surface 90 formed on the inner circumference of the locking washer 80 proposed according to the invention is designed in the inner diameter 92.
  • a thickness of the lock washer 80 is identified by the reference numeral 94 in the illustration according to FIG.

Landscapes

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

Abstract

La présente invention concerne un injecteur de carburant comprenant une électrovanne qui comprend un module d'induit en plusieurs parties. Le module d'induit en plusieurs parties comprend un boulon d'induit (10) sollicité par un ressort de vanne (24) et une plaque d'induit (70), et est actionné par l'électrovanne. Un mouvement alternatif du boulon d'induit (10) ouvre et referme un élément de fermeture (42) afin de décharger la pression d'une chambre de commande (48), ce qui permet l'actionnement d'un élément de soupape d'injection (60). La plaque d'induit (70) est fixée au boulon d'induit (10) au moyen d'une bague d'arrêt (80) et ne comprend aucun autre élément de fixation.
PCT/EP2007/057786 2006-09-26 2007-07-27 Bague d'arrêt pour électrovanne WO2008037523A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006045357.3 2006-09-26
DE200610045357 DE102006045357A1 (de) 2006-09-26 2006-09-26 Sicherungsscheibe für ein Magnetventil

Publications (1)

Publication Number Publication Date
WO2008037523A1 true WO2008037523A1 (fr) 2008-04-03

Family

ID=38543595

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/057786 WO2008037523A1 (fr) 2006-09-26 2007-07-27 Bague d'arrêt pour électrovanne

Country Status (2)

Country Link
DE (1) DE102006045357A1 (fr)
WO (1) WO2008037523A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013098231A1 (fr) * 2011-12-27 2013-07-04 Robert Bosch Gmbh Injecteur de carburant pour moteurs à combustion interne

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010040368A1 (de) 2010-09-08 2012-03-08 Robert Bosch Gmbh Magnetventil

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998025025A1 (fr) * 1996-12-07 1998-06-11 Robert Bosch Gmbh Electrovanne
WO2002042632A2 (fr) * 2000-11-23 2002-05-30 Robert Bosch Gmbh Electrovanne destinee a la commande d'une soupape d'injection d'un moteur a combustion interne
WO2002050424A2 (fr) * 2000-12-19 2002-06-27 Robert Bosch Gmbh Electrovanne pour piloter une soupape d'injection de moteur a combustion interne
WO2002052145A1 (fr) * 2000-12-23 2002-07-04 Robert Bosch Gmbh Electrovalve pour la commande d'une soupape d'injection d'un moteur a combustion interne
WO2002053905A1 (fr) * 2001-01-08 2002-07-11 Robert Bosch Gmbh Electrovanne destinee a commander la soupape d'injection d'un moteur a combustion interne
WO2003006817A2 (fr) * 2001-07-10 2003-01-23 Robert Bosch Gmbh Electrovanne a raccord tournant a douille
WO2006042798A1 (fr) * 2004-10-20 2006-04-27 Robert Bosch Gmbh Injecteur de carburant actionne par vanne magnetique, comprenant une butee hydraulique de depassement de course

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998025025A1 (fr) * 1996-12-07 1998-06-11 Robert Bosch Gmbh Electrovanne
WO2002042632A2 (fr) * 2000-11-23 2002-05-30 Robert Bosch Gmbh Electrovanne destinee a la commande d'une soupape d'injection d'un moteur a combustion interne
WO2002050424A2 (fr) * 2000-12-19 2002-06-27 Robert Bosch Gmbh Electrovanne pour piloter une soupape d'injection de moteur a combustion interne
WO2002052145A1 (fr) * 2000-12-23 2002-07-04 Robert Bosch Gmbh Electrovalve pour la commande d'une soupape d'injection d'un moteur a combustion interne
WO2002053905A1 (fr) * 2001-01-08 2002-07-11 Robert Bosch Gmbh Electrovanne destinee a commander la soupape d'injection d'un moteur a combustion interne
WO2003006817A2 (fr) * 2001-07-10 2003-01-23 Robert Bosch Gmbh Electrovanne a raccord tournant a douille
WO2006042798A1 (fr) * 2004-10-20 2006-04-27 Robert Bosch Gmbh Injecteur de carburant actionne par vanne magnetique, comprenant une butee hydraulique de depassement de course

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013098231A1 (fr) * 2011-12-27 2013-07-04 Robert Bosch Gmbh Injecteur de carburant pour moteurs à combustion interne
CN104081039A (zh) * 2011-12-27 2014-10-01 罗伯特·博世有限公司 用于内燃机的燃料喷射阀

Also Published As

Publication number Publication date
DE102006045357A1 (de) 2008-04-03

Similar Documents

Publication Publication Date Title
EP2235354B1 (fr) Injecteur de carburant dont l'élément soupape de commande présente une zone d'appui
DE60023824T2 (de) Elektromagnetisches Dosierventil für ein Kraftstoffeinspritzventil
EP1259729B1 (fr) Electrovanne destinee a la commande d'une soupape d'injection d'un moteur a combustion interne
WO2007054401A1 (fr) Guidage optimise de groupes d'induits pour soupapes magnetiques
EP2100026B1 (fr) Injecteur de carburant avec électrovanne à siège sphérique
WO2007128604A1 (fr) Électrovanne avec goujon d'induit À auto-centrage
DE102006020689A1 (de) Magnetventil mit stoffschlüssiger Ankerverbindung
DE102006050032A1 (de) Injektor mit einem eine konische Hubanschlagfläche aufweisenden Steuerventil
EP1967726B1 (fr) Injecteur à soupape magnétique
WO2017055104A1 (fr) Actionneur électromagnétique, vanne électromagnétique et pompe à carburant haute pression
EP2021616B1 (fr) Électrovanne à espace d'induit noyé
WO2008037523A1 (fr) Bague d'arrêt pour électrovanne
EP2276922B1 (fr) Injecteur de carburant avec electrovanne
EP1960657A1 (fr) Guide a deformation optimisee de l'induit de soupapes magnetiques
EP2499352B1 (fr) Injecteur de carburant
DE102006021740B4 (de) Ankerbaugruppe mit Sicherungseinrichtung für Magnetventile
DE19936943A1 (de) Brennstoffeinspritzventil
EP2156044B1 (fr) Injecteur comprenant une soupape de commande à compensation de pression
EP1208297B1 (fr) Soupape d'injection pour moteur a combustion
DE102013225376A1 (de) Magnetventil für einen Kraftstoffinjektor
EP2185808B1 (fr) Soupape d'injection de carburant pour moteurs à combustion interne
WO2008046677A2 (fr) Injecteur de carburant doté d'un élément d'étanchéité
DE102010040368A1 (de) Magnetventil
EP2016276B1 (fr) Injecteur de carburant avec un circuit de reflux optimise
DE102009026522A1 (de) Magnetventil ohne Ankerrückstellzeit

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07788000

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 07788000

Country of ref document: EP

Kind code of ref document: A1