EP1135595B1 - Ventil zum steuern von flüssigkeiten - Google Patents

Ventil zum steuern von flüssigkeiten Download PDF

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Publication number
EP1135595B1
EP1135595B1 EP00975772A EP00975772A EP1135595B1 EP 1135595 B1 EP1135595 B1 EP 1135595B1 EP 00975772 A EP00975772 A EP 00975772A EP 00975772 A EP00975772 A EP 00975772A EP 1135595 B1 EP1135595 B1 EP 1135595B1
Authority
EP
European Patent Office
Prior art keywords
valve
piezoelectric unit
valve according
tolerance
compensating
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.)
Expired - Lifetime
Application number
EP00975772A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1135595A1 (de
Inventor
Friedrich Boecking
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 EP1135595A1 publication Critical patent/EP1135595A1/de
Application granted granted Critical
Publication of EP1135595B1 publication Critical patent/EP1135595B1/de
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
    • 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
    • F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic

Definitions

  • the invention relates to a valve for controlling Liquids according to the preamble of claim 1.
  • a valve for controlling Liquids according to the preamble of claim 1.
  • Such a valve is known from EP 0 477 400 A1 can be actuated via a piezoelectric actuator, already known.
  • This known valve has an arrangement for an adaptive, mechanical acting in the stroke direction Tolerance compensation for a path transformer of the piezoelectric Actuator on which the deflection of the piezoelectric Actuator is transmitted via a hydraulic chamber.
  • the hydraulic chamber which is called a hydraulic Translation works, closes them between two delimiting pistons, one of which has a piston is formed smaller and with a is to be controlled valve member and the other Piston is formed with a larger diameter and is connected to the piezoelectric actuator, a common Compensation volume.
  • the hydraulic chamber is between the two pistons clamped that the actuating piston of the valve member, in its rest position using one or more springs is held relative to a predetermined position, a around the ratio of the piston diameter makes increased stroke when the larger piston through the piezoelectric actuator moved by a certain distance becomes.
  • the valve member, the pistons and the piezoelectric Actuators lie one behind the other on a common axis.
  • the invention has for its object a valve for Control of liquids with a piezoelectric To create unit in which a tolerance compensation element to compensate for elongation tolerances of the piezoelectric unit and / or other valve components with little space requirement with a simple construction is realized.
  • valve according to the invention for controlling liquids with the characterizing features of claim 1 the advantage that it works with a high natural frequency, because a direct power transmission via the deflection element without a translation with which the natural frequency is quadratic decreases, is provided.
  • valve with the arrangement according to the invention of piezoelectric unit, deflection element and tolerance compensation element has a compact structure.
  • the tolerance compensation element for in particular Elongation tolerances due to temperature changes are included inexpensive according to the invention with simple mechanical means realized.
  • the embodiment shown in the figure shows a preferred use of the valve according to the invention in a fuel injection valve 1 for internal combustion engines of motor vehicles.
  • the fuel injector 1 is present as a common rail injector Injection of diesel fuel trained.
  • an injection duration and an injection quantity over force relationships in the Fuel injection valve 1 becomes a valve member 2 a piezoelectric unit 3 with a piezoelectric Actuator 4, which is on a remote from the combustion chamber Side of the valve member 2 arranged in a piezo chamber 5 which is in turn in a valve body or valve housing 6 is formed.
  • the piston-shaped valve member 2 is axially displaceable in a bore 7 of the valve body designed as a longitudinal bore 6 arranged and has on its combustion chamber side End of a valve head 8 forming a valve closing member on.
  • the valve member 2 is in the present case as a 2/2 valve formed, the valve head 8 with one on the Valve body 6 formed first seat 9 and second seat 10 cooperates. Doing so will take off State of the valve head 8 connects to a Spring chamber 11 with a restoring force on the externally opening valve head 8 exerting spring device 12 manufactured.
  • valve member as a 2/3 valve works with a middle position.
  • the spring chamber 11 is connected to the combustion chamber Flow restrictor 13, which leads to a valve control chamber 14 leads in which one only symbolically indicated in the figure Injection line 15 opens, which in turn from one common high pressure storage space for all fuel injection valves (Common Rail) 16 leads away.
  • the high pressure storage room 16 is in a known manner from one High pressure fuel delivery pump with high pressure fuel filled from a storage tank.
  • the piezoelectric actuator 4 for actuating the valve member 2 is made up of several thin layers and has a piezo head on the side facing the combustion chamber 17 and one on its side facing away from the combustion chamber Piezo foot with an electrical contact 19.
  • the Piezo head 17 is provided with a deflection element 20, by means of which a deflection of the piezoelectric actuator 4 on the Valve member 2 is transferable, connected, the piezoelectric unit 3 in the direction of movement Valve member 2 with its piezo head 17 facing it within a longitudinal extent of the deflecting element 20 is arranged.
  • the deflecting element 20 represents a essentially closed and an interior 21 delimiting Deflection sleeve.
  • the piezoelectric actuator 4 is with the deflection sleeve 20 via a tolerance compensation element 22 to compensate for Elongation tolerances of the piezoelectric unit 3 or other valve components such as of the valve member 2 or of the valve body 6 connected.
  • the tolerance compensation element 22 is parallel to the piezoelectric unit 3 arranged, on the one hand with the piezo head 17 and on the other hand with a support 23 on the deflection sleeve 20 in an area connected to the piezo foot 18 is.
  • the tolerance compensation element with a different number of compensating bolts or is designed, for example, like a sleeve.
  • the tolerance compensation element 22 has one in comparison the piezoelectric unit 3 similar tolerance-related Elongation behavior on without one on the Position of the valve member 2 acting movement of the To cause deflecting elements 20.
  • the tolerance compensation element 20 approximately a length and one Coefficient of thermal expansion of the piezoelectric Actuator 4 on.
  • the piezoelectric unit 3 is opposite to that Valve member 2 receiving bore 7 and located therein Fuel sealed, for which a sealing element 25 is provided is, which is designed here as a sealing plate, which in the two-part valve body at this point 6 is stored.
  • the sealing plate 25 has for contacting of the deflecting element 20 with the valve member 2 in each case with a sealing device 26, which is an O-ring or Membrane is provided through openings 27. By the passage openings 27 extend on the deflection element 20 provided through bolts 28 into the bore 7.
  • valve member 2 For contacting the passage bolts 28 of the deflecting element 20 is the valve member 2 with a plate 29 formed, the diameter of which is essentially that of Deflection elements 20 corresponds.
  • the valve member 2 or its plate 29 is not in the activated state of the piezoelectric actuator 4 by an air gap 30 separated from the deflecting element 20.
  • This air gap 30 is dimensioned such that at one possible temperature compensation movements of the deflecting element can be compensated by a few micrometers.
  • the fuel injection valve 1 according to the figure operates in described below.
  • the balance bolts 24 of the Tolerance compensation element 22 in the same way as that piezoelectric actuator 4 so that the deflecting element 20 is not is moved or experiences only a minimal deflection, which is less than the width of the air gap 30. In in any case, this has no effect on the closing and Open position of the valve member 2 and the fuel valve 1 in total.
  • valve member 2 has in the force balanced designed fuel injector 1 result in that a valve control piston 33 in the valve control chamber 14 after is moved up and fuel is released by a now Injection nozzle in the combustion chamber, not shown is injected.

Landscapes

  • 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)
  • Electrically Driven Valve-Operating Means (AREA)
  • Control Of Non-Electrical Variables (AREA)
EP00975772A 1999-09-30 2000-09-16 Ventil zum steuern von flüssigkeiten Expired - Lifetime EP1135595B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19946841 1999-09-30
DE19946841A DE19946841A1 (de) 1999-09-30 1999-09-30 Ventil zum Steuern von Flüssigkeiten
PCT/DE2000/003226 WO2001023745A1 (de) 1999-09-30 2000-09-16 Ventil zum steuern von flüssigkeiten

Publications (2)

Publication Number Publication Date
EP1135595A1 EP1135595A1 (de) 2001-09-26
EP1135595B1 true EP1135595B1 (de) 2004-12-15

Family

ID=7923822

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00975772A Expired - Lifetime EP1135595B1 (de) 1999-09-30 2000-09-16 Ventil zum steuern von flüssigkeiten

Country Status (8)

Country Link
US (1) US6454239B1 (cs)
EP (1) EP1135595B1 (cs)
JP (1) JP2003510508A (cs)
KR (1) KR100806058B1 (cs)
AT (1) ATE285034T1 (cs)
CZ (1) CZ295448B6 (cs)
DE (2) DE19946841A1 (cs)
WO (1) WO2001023745A1 (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102979941A (zh) * 2012-12-13 2013-03-20 浙江师范大学 一种自带传感器的大流量压电叠堆阀

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001014731A1 (de) * 1999-08-20 2001-03-01 Robert Bosch Gmbh Ventil zum steuern von flüssigkeiten
DE19939520C2 (de) * 1999-08-20 2001-06-07 Bosch Gmbh Robert Einspritzsystem und Verfahren zum Betreiben eines Einspritzsystems
DE10003863B4 (de) * 2000-01-28 2004-11-18 Robert Bosch Gmbh Einspritzdüse
US20030062026A1 (en) * 2000-09-07 2003-04-03 Friedrich Boecking Common rail system
DE10141136A1 (de) * 2001-04-07 2002-10-10 Continental Teves Ag & Co Ohg Ventil.insbesondere für hydraulische Kraftfahrzeugbremsen
DE10122245A1 (de) * 2001-05-08 2002-12-12 Bosch Gmbh Robert Leckagereduzierter druckgesteuerter Kraftstoffinjektor
DE10132249A1 (de) * 2001-07-04 2003-01-23 Bosch Gmbh Robert Kraftstoffinjektor mit kraftausgeglichenem Steuerventil
DE10136186A1 (de) * 2001-07-25 2003-02-06 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE10147483B4 (de) * 2001-09-26 2005-05-19 Robert Bosch Gmbh Ventil zum Steuern von Flüssigkeiten
DE10163731A1 (de) * 2001-12-21 2003-07-10 Biochip Technologies Gmbh Piezoaktor
DE10213858A1 (de) * 2002-03-27 2003-10-30 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10233906A1 (de) * 2002-07-25 2004-02-19 Siemens Ag Einspritzmodul
DE10345203A1 (de) * 2003-09-29 2005-05-04 Bosch Gmbh Robert Brennstoffeinspritzventil
EP1584815A1 (en) * 2004-04-05 2005-10-12 Tiby M. Martin Common rail fuel injector
DE602005005242T2 (de) 2004-04-26 2009-04-02 Isuzu Motors Ltd. Längen-Ausgleichselement und dieses enthaltendes Kraftstoff-Einspritzventil
DE102004026171B4 (de) * 2004-05-28 2010-05-20 Continental Automotive Gmbh Einspritzventil
DE102005025953A1 (de) * 2005-06-06 2006-12-07 Siemens Ag Einspritzventil und Ausgleichselement für ein Einspritzventil
DE102006026381A1 (de) * 2006-06-07 2007-12-13 Robert Bosch Gmbh Kraftstoffinjektor mit Druckübersetzer und niederdruckseitig angeordnetem Piezosteller
US7717132B2 (en) * 2006-07-17 2010-05-18 Ford Global Technologies, Llc Hydraulic valve actuated by piezoelectric effect
US9142751B2 (en) * 2012-10-10 2015-09-22 Industrial Sonomechanics, Llc Efficient cooling of piezoelectric transducers
CN104806403B (zh) * 2015-04-30 2017-05-24 哈尔滨工程大学 多模式压电式常闭电控单体泵
CN104806404B (zh) * 2015-04-30 2017-12-12 哈尔滨工程大学 双作用压电式常闭电控单体泵
FR3151068A1 (fr) * 2023-07-13 2025-01-17 Arianegroup Sas vanne automatique ajustable

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102979941A (zh) * 2012-12-13 2013-03-20 浙江师范大学 一种自带传感器的大流量压电叠堆阀
CN102979941B (zh) * 2012-12-13 2014-06-04 浙江师范大学 一种自带传感器的大流量压电叠堆阀

Also Published As

Publication number Publication date
CZ295448B6 (cs) 2005-08-17
DE19946841A1 (de) 2001-05-03
KR20010101058A (ko) 2001-11-14
JP2003510508A (ja) 2003-03-18
WO2001023745A1 (de) 2001-04-05
DE50008956D1 (de) 2005-01-20
ATE285034T1 (de) 2005-01-15
US6454239B1 (en) 2002-09-24
EP1135595A1 (de) 2001-09-26
CZ20011878A3 (cs) 2002-03-13
KR100806058B1 (ko) 2008-02-21

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