EP1505295A1 - Methode de positionner d'un actionneur d'un injecteur de carburant et dispositif pour effecteur de la methode - Google Patents

Methode de positionner d'un actionneur d'un injecteur de carburant et dispositif pour effecteur de la methode Download PDF

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Publication number
EP1505295A1
EP1505295A1 EP20040026927 EP04026927A EP1505295A1 EP 1505295 A1 EP1505295 A1 EP 1505295A1 EP 20040026927 EP20040026927 EP 20040026927 EP 04026927 A EP04026927 A EP 04026927A EP 1505295 A1 EP1505295 A1 EP 1505295A1
Authority
EP
European Patent Office
Prior art keywords
housing
actuator
piezoelectric actuator
fuel injector
bottom 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
EP20040026927
Other languages
German (de)
English (en)
Other versions
EP1505295B1 (fr
Inventor
Wilhelm Frank
Wendelin KLÜGL
Stefan Lehmann
Günter LEWENTZ
Martin Dr. Neumaier
Reda Rizk
Gerd Dr. Schmutzler
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.)
Aumovio Germany GmbH
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1505295A1 publication Critical patent/EP1505295A1/fr
Application granted granted Critical
Publication of EP1505295B1 publication Critical patent/EP1505295B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • 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
    • F02M61/167—Means for compensating clearance or thermal expansion
    • 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
    • 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
    • F02M2200/701—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical
    • 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
    • F02M2200/8053—Fuel injection apparatus manufacture, repair or assembly involving mechanical deformation of the apparatus or parts thereof
    • 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
    • F02M2200/8069—Fuel injection apparatus manufacture, repair or assembly involving removal of material from the fuel apparatus, e.g. by punching, hydro-erosion or mechanical operation
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/598—With repair, tapping, assembly, or disassembly means
    • Y10T137/5987—Solenoid or electromagnetically operated valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making
    • Y10T29/49416—Valve or choke making with assembly, disassembly or composite article making with material shaping or cutting
    • Y10T29/49423—Valve or choke making with assembly, disassembly or composite article making with material shaping or cutting including metal deforming

Definitions

  • the invention relates to a method for positioning the Actuator in a fuel injector according to the preamble of claims 1; a device for carrying out the method according to the preamble of claim 2 and a fuel injector according to the preamble of the claim 6th
  • the fuel injector generally comprises an injection valve, the hydraulically opened by a servo valve and is closed to the timing of the injection process to specify exactly in the combustion chamber.
  • the servo valve is thereby controlled by an electrically Actuator actuated, in particular, the use of piezoelectric Actuators to achieve sufficiently short switching times has proved favorable.
  • a piezoelectric Actuator becomes a longitudinal strain by applying voltage caused to be transmitted to the servo valve, which in turn opens or closes the injection valve.
  • the lying in the micron range longitudinal expansion of the piezoelectric Actuator can operate the servo valve, this is Elongation generally either mechanically by a lever levers mounted in fuel or hydraulically reinforced by a pressure chamber.
  • a fuel injector with a piezo actuator and hydraulic Reinforcement is described, for example, in U.S. Patent No. 5,779,149.
  • the idle stroke should on the one hand be as small as possible, always with defined conditions and to minimize the dynamic loads hold. On the other hand, there must always be a minimum clearance between the actor and actuator can be guaranteed to malfunction in the To avoid operation.
  • the setting of the idle stroke in the fuel injector is so far so made that the exact arrangement of each Components of the fuel injector and in particular their Distances to each other mathematically from the dimensions of this Components are determined.
  • each component must be individually measured consuming. After measuring the idle stroke is then through between the Injector housing and the actuator or the servo valve arranged Shims set, the minimum tolerance and therefore very much in production are expensive.
  • the object of the present invention is to provide a method for Positioning the actuator in a fuel injector and an apparatus for carrying out such a method to create, in which or at a low cost Reliable positioning of the actuator in the Fuel injector is possible and the one or more suitable for serial production Function test of the fuel injector allowed.
  • the above object is therefore solved by the setting the idle stroke is made so that the piezoelectric actuator before its installation in the fuel injector a defined Voltage is applied to a longitudinal expansion of the piezo elements cause exactly the desired idle stroke equivalent.
  • a defined Voltage is applied to a longitudinal expansion of the piezo elements cause exactly the desired idle stroke equivalent.
  • the bottom plate of the piezoelectric actuator with the housing the actuator ground flat In the current or voltage-free Condition is the bottom plate relative to the actuator housing then to return to the idle stroke.
  • a compensation ring between the piezoelectric actuator and the housing of the fuel injector intended.
  • the compensation ring is in the down to the piezoelectric actuator completely assembled fuel injector inserted and by a pretensioner with a plane effective area so long deformed, until the servo valve lifts from its valve seat. Then screw in place of the biasing device the piezo actuator until it stops at the balancing ring in the Injector housing, so inevitably arises before as specified above Leerhub between the bottom plate the piezoelectric actuator and the actuator of the fuel injector servo-valve one.
  • This is an active connection between the piezoelectric actuator and the actuator for the servo valve formed with fixed positions such that the Leerhub between piezoelectric actuator and actuator despite the inevitable Manufacturing tolerances of the individual components always corresponds to the predetermined value.
  • the balancing ring is preferably made of soft iron or soft copper.
  • the piezoelectric actuator before its installation without voltage applied plan be ground, the intended Idle stroke during the deformation of the compensation ring via a survey is set on the pretensioner.
  • the Biasing device not from a flat stamp, but from a stamp with embossed front.
  • the drawing shows schematically a sectional view of a fuel injector in the area the connection between a piezoelectric actuator and a Actuator for a servo valve.
  • the figure of the drawing shows in section a part of an injector for fuel injection into the combustion chamber of a Internal combustion engine in a common rail system.
  • a piezoelectric actuator 2 with a Housing 3 and a bottom plate 4 screwed.
  • a piezoelectric element array (not shown in detail), with the bottom plate 4 communicates. If to the piezoelectric element via (Also not shown) supply lines applied a voltage is changed, this changes their length, and the bottom plate 4 changed thereby their position relative to the actuator housing. 3
  • the piezoelectric actuator 2 acts when it is electrically driven, to a transmission element 5 in the fuel injector housing. 1 one. This means that when applying a voltage to the said piezoelectric element arrangement, the bottom plate 4 of the piezoelectric actuator 2 due to the voltage applied by the applied voltage Longitudinal expansion of the piezoelectric elements from the actuator housing outside, in the drawing down, shifts, and also the transmission element 5 is moved accordingly.
  • the transmission element 5 in the fuel injector housing 1 in turn acts on a valve stem 6, which at a Valve element 7 of a servo valve is applied.
  • the transmission element 5 shown can also be a provided hydraulic translation of the stroke of the piezoelectric actuator 2 become.
  • the bottom plate 4 of the piezoelectric actuator acts 2 on an actuator for the servo valve of Fuel injector. Piezoelectric actuator 2 and actuator form the actuator for the servo valve.
  • the piezoelectric actuator 2 before installation in the injector 1 edited so that the bottom plate 4 to exactly the predetermined Leerhub .DELTA.h relative to the housing 3 of the piezoelectric actuator back is.
  • the piezoelectric actuator 2 before installation exactly the voltage U is applied in the injector housing 1, which corresponds to a longitudinal expansion of the piezoelectric element arrangement the predetermined idle stroke .DELTA.h causes, and it will be the case 3 and the bottom plate 4 of the piezoelectric actuator 2 when applied Tension U flat ground.
  • the piezoelectric actuator 2 can do this, for example, in a grinding machine be clamped, the voltage U via slip rings is supplied.
  • the balancing ring 9 made of a soft, deformable material how soft iron or soft copper is made in the completely assembled except for the piezoelectric actuator 2 Fuel injector inserted. Then, instead of the piezoelectric actuator 2, a biasing device in the fuel injector screwed in, whose front, the side of the piezoelectric actuator 2 corresponds to the bottom plate 4, completely flat is. The pretensioner is screwed in until due to the actuation of the transmission element 5 by the plane front of the biasing device, the valve element. 7 of the servo valve begins to lift off its valve seat. There becomes the balancing ring made of a soft material 9, on the also the flat front of the Pretensioner acts permanently by material flow deformed. The balance ring 9 then retains when removing the Biasing means the thickness that he had as the biasing means just screwed in that far the servo valve began to open.
  • the piezoelectric actuator 2 instead of the biasing device, the piezoelectric actuator 2, the bottom plate 4 as described above to the given idle stroke .DELTA.h lags, until it stops in the Screwed housing 1 of the fuel injector, that is until the piezoelectric actuator housing 3 abuts against the compensation ring 9, so the leading edge of the Piezoaktorgepuruses 3 is exactly at the height, the front of the pretensioner had when the servo valve began to open.
  • the bottom plate 4 of the piezoelectric actuator 2 is set back by the given idle stroke ⁇ h the idle stroke of the actuator in the fuel injector, that is the game between the bottom plate 4 of the piezoelectric actuator. 2 and servo valve, exactly the predetermined value ⁇ h.
  • the piezoelectric actuator 2 before installation in the Injektorgepuruse 1 edited so that the bottom plate 4 and the housing 3 of the piezoelectric actuator 2 in the ready to install Condition, but ground without applied voltage become.
  • the bottom plate 4 of the piezoelectric actuator 2 is located thus at night the grinding process on exactly the same Height as the housing 3 of the piezoelectric actuator 2 Biasing device for deformation of the compensation ring 9 no plane front but a front on that on the one or more locations at which or the biasing device acting on the transmission element 5, a survey the height ⁇ h has.
  • the central effective surface on the pretensioner, with the transmission element 5 engages stands with others Words in installation direction by the predetermined value .DELTA.h for the idle stroke with respect to the circumferential effect on the edge, which engages with the balancing ring 9.
  • the pretensioner is the same as in the former embodiment instead of the piezoelectric actuator 2 so far in the Fuel injector screwed in until actuated of the transmission element 5 through the raised portion the front of the biasing device, the valve element. 7 of the servo valve begins to open.
  • the balancing ring 9 is while remaining deformed as above. Subsequently, instead of the Biasing device of the piezoelectric actuator 2, in the housing 3 and Bottom plate 4 were ground without voltage applied, until it stops at the compensation ring 9 in the housing. 1 screwed the fuel injector.
  • the idle stroke between Piezo actuator 2 and servo valve exactly the predetermined value .DELTA.h on, since the thickness of the balancing ring 9 with the biasing means is adjusted so that during operation of the Fuel injector begins to open the servo valve after the bottom plate 4 of the piezoelectric actuator 2 in its control has covered the free travel ⁇ h.

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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)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)
EP20040026927 1999-05-07 2000-05-04 Méthode de positionnement d'un actionneur d'un injecteur de carburant et dispositif pour effectuer la méthode Expired - Lifetime EP1505295B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19921242 1999-05-07
DE1999121242 DE19921242C1 (de) 1999-05-07 1999-05-07 Verfahren zum Positionieren des Stellantriebs in einem Kraftstoffinjektor und Vorrichtung zur Durchführung des Verfahrens
EP20000943547 EP1144841B1 (fr) 1999-05-07 2000-05-04 Procede pour positionner l'entrainement de reglage dans un injecteur de carburant, et dispositif pour la mise en oeuvre de ce procede

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP00943547.0 Division 2000-05-04
EP20000943547 Division EP1144841B1 (fr) 1999-05-07 2000-05-04 Procede pour positionner l'entrainement de reglage dans un injecteur de carburant, et dispositif pour la mise en oeuvre de ce procede

Publications (2)

Publication Number Publication Date
EP1505295A1 true EP1505295A1 (fr) 2005-02-09
EP1505295B1 EP1505295B1 (fr) 2010-09-08

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP20040026927 Expired - Lifetime EP1505295B1 (fr) 1999-05-07 2000-05-04 Méthode de positionnement d'un actionneur d'un injecteur de carburant et dispositif pour effectuer la méthode
EP20000943547 Expired - Lifetime EP1144841B1 (fr) 1999-05-07 2000-05-04 Procede pour positionner l'entrainement de reglage dans un injecteur de carburant, et dispositif pour la mise en oeuvre de ce procede

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20000943547 Expired - Lifetime EP1144841B1 (fr) 1999-05-07 2000-05-04 Procede pour positionner l'entrainement de reglage dans un injecteur de carburant, et dispositif pour la mise en oeuvre de ce procede

Country Status (4)

Country Link
US (3) US6705587B1 (fr)
EP (2) EP1505295B1 (fr)
DE (3) DE19921242C1 (fr)
WO (1) WO2000068563A2 (fr)

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US20060138374A1 (en) * 2004-04-14 2006-06-29 Lucas Michael A Solenoid actuated flow control valve including adjustable spacer
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DE102005013911B4 (de) * 2005-03-24 2019-10-02 Continental Automotive Gmbh Stellantrieb zur Betätigung eines Kraftstoffeinspritzventils
DE102005015409B4 (de) 2005-04-04 2019-01-03 Continental Automotive Gmbh Verfahren und Vorrichtung zur Vorgabe eines Abstands zwischen einem vorgegebenen ersten Bezugspunkt auf einem ersten Körper und einem vorgegebenen zweiten Bezugspunkt auf einem zweiten Körper und Körpervorrichtung
EP1918575B1 (fr) * 2006-11-02 2009-10-14 Continental Automotive GmbH Injecteur pour le dosage de fluide et procédé de montage de l'injecteur
ATE503106T1 (de) * 2008-06-27 2011-04-15 Fiat Ricerche Brennstoffeinspritzvorrichtung mit balanciertem mess-servoventil für einen verbrennungsmotor
DE102010044285B4 (de) * 2010-09-03 2014-02-27 Continental Automotive Gmbh Verfahren und Vorrichtung zum Einstellen eines Leerhubs eines Stellantriebs eines Einspritzventils und Injektorbaugruppe
DE102011090196A1 (de) 2011-12-30 2013-07-04 Continental Automotive Gmbh Hebelvorrichtung und Einspritzventil
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DE102012205044A1 (de) * 2012-03-29 2013-10-02 Continental Automotive Gmbh Verfahren zum Verbessern einer Maßhaltigkeit einer Kraftstoffinjektor-Komponente sowie Kraftstoffinjektor-Komponente
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US20080011972A1 (en) 2008-01-17
US7310986B2 (en) 2007-12-25
US6705587B1 (en) 2004-03-16
EP1505295B1 (fr) 2010-09-08
EP1144841A2 (fr) 2001-10-17
DE50015988D1 (de) 2010-10-21
US20040256499A1 (en) 2004-12-23
WO2000068563A2 (fr) 2000-11-16
EP1144841B1 (fr) 2005-07-20
WO2000068563A3 (fr) 2001-07-19
DE50010750D1 (de) 2005-08-25
DE19921242C1 (de) 2000-10-26
US8720852B2 (en) 2014-05-13

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