EP1241346A2 - Soupape destinée à la commande de fluides - Google Patents

Soupape destinée à la commande de fluides Download PDF

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Publication number
EP1241346A2
EP1241346A2 EP02003421A EP02003421A EP1241346A2 EP 1241346 A2 EP1241346 A2 EP 1241346A2 EP 02003421 A EP02003421 A EP 02003421A EP 02003421 A EP02003421 A EP 02003421A EP 1241346 A2 EP1241346 A2 EP 1241346A2
Authority
EP
European Patent Office
Prior art keywords
piston
valve
filling
fluid
chamber
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.)
Withdrawn
Application number
EP02003421A
Other languages
German (de)
English (en)
Other versions
EP1241346A3 (fr
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 EP1241346A2 publication Critical patent/EP1241346A2/fr
Publication of EP1241346A3 publication Critical patent/EP1241346A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • F02M63/0035—Poppet valves, i.e. having a mushroom-shaped valve member that moves perpendicularly to the plane of the valve seat
    • 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
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with spherical or partly spherical shaped valve member ends
    • 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
    • F02M2200/705—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with means for filling or emptying hydraulic chamber, e.g. for compensating clearance or thermal expansion

Definitions

  • the invention relates to a valve for controlling Liquids with a hydraulic translator and one Filling device to replace the leakage Fluid loss on the hydraulic translator.
  • the present invention relates to an injector with a Piezo actuator for a pressure controlled common rail system.
  • This Refilling can be implemented in this way, for example be that through an appropriate arrangement of chokes the rail pressure of the system is throttled and for one Filling the hydraulic translator is tapped.
  • the filling pressure can either depend on the rail pressure be or by a corresponding check valve be kept at a constant pressure.
  • the valve according to the invention for controlling liquids with the features of claim 1 has the opposite the advantage that the filling of a pressure chamber of the hydraulic translator simultaneously with the reset of the hydraulic translator in its initial position he follows.
  • a first piston generates the hydraulic Translator directly or indirectly Displacement in a filling chamber Filling.
  • By resetting the first piston fluid is displaced from the filling chamber and the pressure chamber of the hydraulic translator fed to the there compensate for any leakage losses.
  • a particularly compact filling device To be provided is the filling area of the filling device advantageously directly on the piezo actuator Side of the first piston arranged. This allows the first Piston when it returns to its original position immediately displace fluid from the filling chamber and thus compensate for the leakage losses in the pressure chamber.
  • it is preferably annular.
  • the present invention is the filling space of one Surround the filler housing.
  • The is particularly preferred Filling space through a formed in the filler housing Recess formed.
  • the first piston in one arranged cylindrical sleeve.
  • the hydraulic is preferably reset Translator by means of a between the piezo actuator and the hydraulic translator arranged spring element.
  • the spring element is particularly preferably supported on Filler housing. As a result, the spring element at the same time a seal between the Filler housing and the cylindrical sleeve of the first Piston ready.
  • the piezo actuator and the first one Piston arranged an intermediate piston, on which a disc-shaped element is arranged.
  • the disc-shaped Element is a spring seat for the spring element educated. This will reset the hydraulic translator over the disc-shaped element and the intermediate piston, which is fixed to the first piston connected is.
  • the disk-shaped element is particularly preferred as Snap ring formed in one in the intermediate piston formed groove is arranged. This can make a special simple structure can be achieved.
  • leakage fluid line in the area of the first Piston provided to drain the leakage fluid from the hydraulic To pay translators.
  • the valve according to the invention can particularly preferably be in a memory injection system such as a common rail system be used.
  • Fig. 1 shows a valve for controlling liquids according to an embodiment of the present invention in section.
  • the valve 1 comprises a housing 10 in which a piezo actuator 2, a hydraulic booster 3 and a control valve 15 are arranged.
  • the hydraulic translator 3 consists of a first piston 4, a second piston 5 and one between the two pistons 4, 5 arranged pressure chamber 6.
  • the first piston 4 protrudes an intermediate piston 7 in connection with the piezo actuator 2.
  • the second piston 5 is connected to an actuating element 23 Valve member 16 of the control valve 15 in connection.
  • the first Piston 4 is arranged in a cylindrical sleeve 13 and is firmly connected to the intermediate piston 7.
  • the filling device consists of a Filling chamber 11 and a filler housing 12.
  • the filler housing 12 is sleeve-shaped and is around the intermediate piston 7 arranged around.
  • the filling chamber 11 is on the first piston 4 directed end of the filler housing 12 arranged (see. Fig. 1).
  • a spring element 9 is provided, which is located on the one hand on the filler housing 12 supports and on the other hand on a disc-shaped element 8 supported.
  • the disc-shaped element 8, e.g. a snap ring is arranged in a groove 22 of the intermediate piston 7 and serves as a spring seat for the spring element 9.
  • a leakage fluid line 14 arranged to leak fluid of the hydraulic translator 3, which exits in this area, record and discharge.
  • the leakage fluid line 14 is also connected to the control valve 15 connected.
  • Nozzle needle 18 arranged to a in a known manner Allow fuel to be injected into a combustion chamber.
  • the control chamber 17 is one between the control chamber 17 and the control valve Throttle 20 arranged.
  • Throttle 20 is one between the control chamber 17 and a high pressure inlet 21.
  • another throttle 19 (Z throttle) arranged to the pressure in Reduce control room 17.
  • valve 1 If valve 1 is to be used for fuel injection, the piezo actuator 2 is activated so that a change in length of the Piezo actuator 2 occurs. This is on the intermediate piston 7 transfer the first piston 4 of the hydraulic translator 3. According to the ratio of the piston diameter of the first Piston 4 and the second piston 5 of the hydraulic Translator 3 is the stroke of the piezo actuator 2 by hydraulic translator 3 translates. About the Actuator 23, the stroke of the second piston 5 on the Transfer control valve 15 so that the valve member 16 of the Control valve 15 lifts off its seat. This gives it Control valve 15 a connection between the control chamber 17 of the Leakage fluid line 14 free, so that the pressure in the control chamber 17th sinks. As a result, the nozzle needle 18 moves in the direction of Control valve 15 so that the nozzle needle 18 from its valve seat (not shown) takes off and thus a fuel injection is possible in a known manner.
  • the piezo actuator 2 deactivated and a reset of the components of valve 1 takes place by means of the spring element 9.
  • the piezo actuator 2 by the restoring force of the spring element 9 via the disc-shaped element 8 and the intermediate piston 7 under Preload set.
  • the hydraulic translator 3 via the intermediate piston 7 back to its starting position withdrawn. This closes the valve member 16 of the Control valve 15 and in the control room 17 builds again Output pressure on, so that the nozzle needle 18 back on their Valve seat is pressed and fuel injection is completed.
  • Filling (filling) of the filling space 11 can for example, however, also take place during the injection, if between a reservoir for filling the filling space and a check valve is arranged in the filling chamber 11, which by the generated due to the movement of the first piston 4 Vacuum in the filling chamber 11 opens.
  • the present invention is particularly preferred for Common rail diesel injectors used. Of course you can however, the present invention also applies to other valves hydraulic translator can be used.
  • the filling space 11 can not only directly through the first piston 4 are actuated, but also indirectly, for example by providing several intermediate pistons or the like, be operated.
  • the present invention relates to a valve 1 for Control of liquids with one piezo actuator 2 and one hydraulic translator 3.
  • hydraulic translator 3 consists of a first piston 4, a second piston 5 and one between the two pistons, with fluid filled pressure chamber 6.
  • a control valve 15 and a filling device 11, 12 to replace the leakage conditional fluid loss in the pressure chamber 6 provided.
  • the Filling device has a filling space filled with fluid 11 on and leakage losses in the pressure chamber 6 at one Reset movement of the hydraulic translator 3 due one directly or indirectly by the first piston 4 generated displacement effect in the filling chamber 11 by fluid replaced from the filling chamber 11.

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)
EP02003421A 2001-03-14 2002-02-14 Soupape destinée à la commande de fluides Withdrawn EP1241346A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10112147 2001-03-14
DE10112147A DE10112147A1 (de) 2001-03-14 2001-03-14 Ventil zum Steuern von Flüssigkeiten

Publications (2)

Publication Number Publication Date
EP1241346A2 true EP1241346A2 (fr) 2002-09-18
EP1241346A3 EP1241346A3 (fr) 2004-02-04

Family

ID=7677355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02003421A Withdrawn EP1241346A3 (fr) 2001-03-14 2002-02-14 Soupape destinée à la commande de fluides

Country Status (4)

Country Link
US (1) US6805302B2 (fr)
EP (1) EP1241346A3 (fr)
JP (1) JP2002322959A (fr)
DE (1) DE10112147A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1614893A1 (fr) * 2004-07-06 2006-01-11 Denso Corporation Injecteur du type Common-Rail

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322672A1 (de) * 2003-05-20 2004-12-09 Robert Bosch Gmbh Ventil zum Steuern von Flüssigkeiten
DE102004027824A1 (de) * 2004-06-08 2006-01-05 Robert Bosch Gmbh Kraftstoffinjektor mit variabler Aktorübersetzung
DE602004002686T8 (de) * 2004-06-30 2008-01-03 C.R.F. Società Consortile per Azioni, Orbassano Kraftstoffinjektor mit kraftausgeglichenem Steuerventil
DE102005015997A1 (de) * 2004-12-23 2006-07-13 Robert Bosch Gmbh Kraftstoffinjektor mit direkter Steuerung des Einspritzventilgliedes
DE102005024710A1 (de) * 2005-05-30 2006-12-07 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102005059169A1 (de) * 2005-12-12 2007-06-14 Robert Bosch Gmbh Kraftstoffinjektor mit direkt betätigbarem Einspritzventilglied
US8074625B2 (en) * 2008-01-07 2011-12-13 Mcalister Technologies, Llc Fuel injector actuator assemblies and associated methods of use and manufacture
US7658179B2 (en) * 2008-05-28 2010-02-09 Caterpillar Inc. Fluid leak limiter
US7661410B1 (en) 2008-08-18 2010-02-16 Caterpillar Inc. Fluid leak limiter
US8528519B2 (en) 2010-10-27 2013-09-10 Mcalister Technologies, Llc Integrated fuel injector igniters suitable for large engine applications and associated methods of use and manufacture
US20140131466A1 (en) 2012-11-12 2014-05-15 Advanced Green Innovations, LLC Hydraulic displacement amplifiers for fuel injectors
US9309846B2 (en) 2012-11-12 2016-04-12 Mcalister Technologies, Llc Motion modifiers for fuel injection systems
US9803555B2 (en) * 2014-04-23 2017-10-31 General Electric Company Fuel delivery system with moveably attached fuel tube
DE102014220883B4 (de) * 2014-10-15 2016-09-22 Continental Automotive Gmbh Piezo-Common Rail Injektor mit ins Servoventil integriertem hydraulischem Spielausgleich

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477400A1 (fr) * 1990-09-25 1992-04-01 Siemens Aktiengesellschaft Dispositif compensateur de tolérance dans la direction de mouvement du transformateur de déplacement d'un dispositif d'actionnement piézoélectrique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19817320C1 (de) * 1998-04-18 1999-11-11 Daimler Chrysler Ag Einspritzventil für Kraftstoffeinspritzsysteme
DE19946831C1 (de) * 1999-09-30 2001-07-12 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE10002270C1 (de) * 2000-01-20 2001-06-28 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE10019764B4 (de) * 2000-04-20 2004-09-23 Robert Bosch Gmbh Ventil zum Steuern von Flüssigkeiten

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477400A1 (fr) * 1990-09-25 1992-04-01 Siemens Aktiengesellschaft Dispositif compensateur de tolérance dans la direction de mouvement du transformateur de déplacement d'un dispositif d'actionnement piézoélectrique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1614893A1 (fr) * 2004-07-06 2006-01-11 Denso Corporation Injecteur du type Common-Rail
US7458525B2 (en) 2004-07-06 2008-12-02 Denso Corporation Common-rail injector

Also Published As

Publication number Publication date
JP2002322959A (ja) 2002-11-08
DE10112147A1 (de) 2002-09-19
US20020162900A1 (en) 2002-11-07
EP1241346A3 (fr) 2004-02-04
US6805302B2 (en) 2004-10-19

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