EP3844374A1 - Soupape - Google Patents

Soupape

Info

Publication number
EP3844374A1
EP3844374A1 EP19725707.4A EP19725707A EP3844374A1 EP 3844374 A1 EP3844374 A1 EP 3844374A1 EP 19725707 A EP19725707 A EP 19725707A EP 3844374 A1 EP3844374 A1 EP 3844374A1
Authority
EP
European Patent Office
Prior art keywords
spring
valve
closure body
spring rate
armature
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Withdrawn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
EP19725707.4A
Other languages
German (de)
English (en)
Inventor
Stefan Oskar Grueneis
Rosario Bonanno
Joachim Von Willich
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.)
Vitesco Technologies GmbH
Original Assignee
Vitesco Technologies 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 Vitesco Technologies GmbH filed Critical Vitesco Technologies GmbH
Publication of EP3844374A1 publication Critical patent/EP3844374A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • F02B37/183—Arrangements of bypass valves or actuators therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • F02B37/183—Arrangements of bypass valves or actuators therefor
    • F02B37/186—Arrangements of actuators or linkage for bypass valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/60—Fluid transfer
    • F05D2260/606—Bypassing the fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/60—Control system actuates means
    • F05D2270/62—Electrical actuators
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a valve for blocking and releasing a flow path, which can be actuated by means of an electromagnetic actuator unit.
  • valves are used, for example, as Schubumluftventi le on the turbocharger in motor vehicles in order to release a bypass to the intake side in overrun operation.
  • Schubumluftventi le on the turbocharger in motor vehicles in order to release a bypass to the intake side in overrun operation.
  • rapid opening and closing operations of the valve are sought.
  • valves on the turbocharger are designed either as flap valves actuated by a drive motor with a gear or as slide or piston valves.
  • Membrane valves are also common. Flap valves have the advantage that they allow intermediate positions of the flap, which can be set with the help of a corresponding sensor system and allow partial openings of the bypass line. However, this requires considerable technical effort.
  • Slider or piston valves have the advantage that they have a particularly simple structure and are therefore inexpensive and also have good response behavior. However, they conventionally only allow a completely closed or a fully open position.
  • the invention is therefore based on the object of specifying a valve for blocking and releasing a flow path, which is suitable for use as a recirculation valve on a turbocharger egg nes motor vehicle and which is also simply built up, works reliably and reliable control of the mass flow in a bypass line allowed.
  • This object is achieved with the subject of the independent claim.
  • Advantageous further developments result from the dependent claims.
  • a valve for blocking and releasing a flow path which has an electromagnetic actuator unit and an armature which can be moved axially in the direction of a longitudinal axis of the valve by means of the electromagnetic actuator unit and a closure body connected to the armature, the Closure body for blocking and releasing a flow path is trained. Furthermore, the valve has at least the armature and a connected to the armature first axial end of the closure body Ver housing and a Ven tilsitz forming housing part against which a second axial end of the closure body in a closed position of the Ven valve is pressed by means of a spring device .
  • the spring device has at least one spring compressible with a first spring rate starting from a completely closed position of the valve to a partially open intermediate position of the valve and a second spring rate starting from a partially open intermediate position of the valve to a fully open position of the valve compressible spring.
  • the first spring rate is different from the second spring rate.
  • the spring rate of a spring also called spring stiffness, spring hardness or spring constant, indicates the ratio of the force acting on a spring to the deflection of the spring caused thereby. It depends on various factors, in particular on the material and the type of spring used.
  • the valve has the advantage that, in a technically particularly simple manner, it is possible to assume intermediate positions of the closure body, in which the flow path is partially blocked, so that a completely open reduced mass flow through the bypass line.
  • the intermediate position is achieved in that the spring device can be compressed with two different spring rates, the second spring rate in particular being greater than the first spring rate, i.e. the spring, starting from a completely closed position of the valve, can first be compressed to a partially open intermediate position by means of a relatively small first force and the fully open position of the valve can only be achieved when a second force acts on the spring which is greater than the first force.
  • the electromagnetic actuator unit can then be controlled such that it first provides a relatively small first force Fl on the armature and thus on the spring compressed by the closure body.
  • the first force Fl is dimensioned such that it is sufficient to overcome the counterforce exerted by the spring with the first spring rate, but not the counterforce exerted by the spring with the second spring rate.
  • Dl and D2 mean the first and second spring rate and ALI and AL2 a deflection of the spring device under the influence of the magnetic force, in particular ALI meaning the deflection of the spring device until the desired intermediate position is reached .
  • the closure body Only when a sufficiently high second force F2 is applied, in particular by applying a higher voltage or a corresponding pulse width modulation of the voltage. the closure body can be moved from the intermediate position into the fully open position.
  • the higher second force is dimensioned such that it is sufficient to overcome the force exerted by the spring at the second spring rate.
  • the valve thus has the advantage that it enables the closure body to take intermediate positions in a particularly simple manner.
  • Technically manoeuvrable devices such as sensors can be dispensed with.
  • the intermediate positions are predefined by the selection of appropriate spring rates and the electromagnetic actuator unit is controlled accordingly.
  • the different spring rates result in a particularly clear predefinition of the intermediate positions and a particularly precise positioning of the closure body.
  • the spring device has at least one first spring compressible with the first spring rate and a second spring compressible with the second spring rate.
  • first spring there is a jump in the force required for the displacement of the closure body in that, in a first step, the first spring must first be compressed until the intermediate position is reached, in which the second spring is not yet compressed, but is straight begins to exert a counterforce on the closure body.
  • a higher force In order to open the valve further, a higher force must be applied by the electromagnetic actuator unit, since a higher counterforce of the spring device must now be overcome.
  • first spring and the second spring can be arranged coaxially and, in particular, can be formed as spiral springs arranged symmetrically about a longitudinal axis of the valve.
  • the two Springs between the intermediate position and the fully open position be connected in parallel and the restoring forces exerted by them on the closure body add up.
  • Such an arrangement has the advantage that it takes up little installation space.
  • the two springs or several springs can also be connected in series.
  • the second spring in particular can have a smaller diameter than the first spring, i.e. be arranged within the first spring.
  • an inverted arrangement is also conceivable, in which the first spring has a smaller diameter than the second spring.
  • the first spring is supported on a bottom of the closure body and the second spring is supported on an inside of the first spring and concentrically to the collar, the collar being axially displaceable.
  • a stop angeord net for example in the form of a circumferential or partially circumferential web, which is in contact with the collar during the compression of the second spring.
  • the first spring is compressed when the electromagnetic actuator unit provides a first magnetic force.
  • An intermediate position is reached when the closure body has moved axially so far that the stop comes into contact with the collar.
  • the second spring begins to exert a counterforce on the collar and the stop on the closure body, which can only be overcome by a correspondingly increased magnetic force.
  • the spring device can also have a single spring which is designed such that it can be compressed with different spring rates. For example, a spring with a progressive winding can be used.
  • the spring device thus has a single spring which can be compressed with a first spring rate up to an intermediate position and then with a second spring rate, in particular the first spring rate being smaller than the second spring rate.
  • the actuator unit can be actuated in order to exert either a first force Fl or a second force F2 on the armature, where Fl is not equal to F2.
  • a motor vehicle with a turbocharger device comprising an intake side with a compressor and a turbine side with a turbine, a bypass line to the compressor being provided on the intake side, the valve to be released or being described in the bypass line Blocking the bypass line is arranged.
  • Figure 1 shows schematically a valve in a closed
  • Figure 2 shows schematically the valve of Figure 1 in a partially open intermediate position
  • Figure 3 shows schematically the valve of Figure 1 in a fully open position.
  • FIG. 1 schematically shows a valve 1 designed as a diverter air valve for a turbocharger (not shown) of a vehicle in a closed position according to an embodiment of the invention.
  • the valve 1 is shown in Figure 1 as in all figures in longitudinal section, i.e. cut parallel to a longitudinal axis of the valve.
  • the valve 1 comprises a housing 2 with an integrally formed flange, which has bores through which the housing 2 is flanged to the turbocharger (not shown) in the region of a bypass line 4. In the installation position shown, a second housing part 13 of the valve 1 connects to the housing 2.
  • housing part 13 and the further Ge housing part 18 can also be formed in one piece with the housing 2.
  • An electromagnetic actuator unit 5 with a coil 6 and a metallic pin 7 connected to an armature 8 is arranged in the housing 2.
  • the pin 7 is by means of egg nes upper bearing 24 and a lower bearing 26 in the Ge housing 2 axially displaceably and firmly connected to a topfförmi gene closure body 10.
  • the cup-shaped closure body 10 serving as a piston interacts with a valve seat 12 in order to block or release the bypass line 4.
  • the closure body 10 has an annular sealing surface 14 which cooperates with a valve seat 16 in order to seal the cross section of the bypass line 4.
  • a spring device 17 presses the closure body 10 in the direction of the valve seat 16. Against the force generated by the spring device 17 acts when not actuated Valve 1 only the force acting on the bottom 12 of the closure body 10 due to the pressure in the line 4.
  • the closure body 10 is sealed against the housing part 42 by means of an annular seal 38 with a V-shaped profile.
  • the spring device 17 has a first spring 32 and a second spring 34.
  • the first spring 32 and the second spring 34 are coaxial with the first spring 32 and the second spring 34.
  • the longitudinal axis L of the valve 1 is arranged and designed as spiral springs, the second spring 34 being less
  • the first spring 32 Has a diameter than the first spring 32 and is arranged within the first spring 32.
  • the first spring 32 and the second spring 34 have spring rates D1 and D2, respectively.
  • the second spring 34 is shorter than the first spring 32.
  • the first spring 32 is supported at one end on the bottom 12 of the closure body 10 and at the other end on an annular disk 40 which is coaxial with the longitudinal axis L in the housing 2 is arranged.
  • the second spring 34 is also supported at one end on the washer 40, but with its other end on a collar 30 which is held by a guide sleeve 28.
  • the guide sleeve 28 is arranged concentrically to the pin 7 and the armature 8 in the housing 2 axially displaceable.
  • the guide sleeve 28 is also relative to the pin 7 and the ker 8 axially displaceable. It has the task of holding the lower bearing 26 and also wearing the collar 30.
  • a stop 36 in the form of a partially interrupted, radially circumferential web is arranged coaxially to the longitudinal axis L.
  • the distance of the stop 36 from the longitudinal axis L corresponds essentially to the distance of the collar 30 from the longitudinal axis L, so that the stop 36 by moving the closure body 10 can be brought into contact with the collar 30 in the axial direction.
  • the two springs 32, 34 together form the spring device 17.
  • the spring device 17 has approximately two different spring rates in the embodiment shown. In a compression of the spring device 17 coming from the closed position of the valve 1 shown in Figure 1, the Federra te Dl of the first spring 32 is effective because initially only this spring 32 is compressed. If the valve 1 is opened further, however, the second spring 34 is simultaneously compressed from a defined intermediate position, so that the spring constant D1 + D2 becomes effective overall. This process is described in more detail with reference to FIGS. 2 and 3.
  • Figure 2 shows the valve 1 according to Figure 1 in a partially opened position in which the bypass line 4 is partially released, i.e. a reduced mass flow through this is possible.
  • a voltage was applied to the magnetic coil 6, which resulted in a magnetic force that was sufficient to compress the first spring 32.
  • the valve 1 then opened until the stop 36 came to rest on the underside of the collar 30. This position is shown in Figure 2.
  • bypass line 4 is only to be partially released, a voltage is therefore applied to the coil 6 which is sufficient to overcome the counterforce of the first spring 32 and to achieve the intermediate position shown in FIG. 2, which is too low to overcome the additional counterforce of the second spring 34 and the position shown in FIG. 3, fully open to reach.
  • the valve 1 thus enables not only a fully closed and a fully open position, but also an intermediate position. If the spring device 17 is designed such that it has more than two different spring constants, further intermediate positions are also conceivable, between which the spring constant typically increases gradually.
  • the electromagnetic actuator unit 5 is controlled accordingly in order to overcome the respective counterforce of the spring device 17. In this way it is possible, by means of an electromagnetic valve and dispensing with position sensors, to provide a diverter valve which has one or more defined and selectively controllable intermediate positions of the closure body 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Magnetically Actuated Valves (AREA)
  • Supercharger (AREA)

Abstract

L'invention concerne une soupape (1) servant à bloquer et libérer un trajet d'écoulement, comprenant : un ensemble actionneur (5) électromagnétique, une armature (8) déplaçable axialement au moyen de cet ensemble actionneur (5) électromagnétique et un corps de fermeture (10) relié à cette armature (8), ce corps de fermeture (10) étant conçu pour bloquer et libérer un trajet d'écoulement ; un carter (2) renfermant au moins l'armature (8) et une première extrémité (20) axiale du corps de fermeture (10) reliée à cette armature (8), une partie de carter (18) formant un siège de soupape (16) contre laquelle une deuxième extrémité (22) axiale du corps de fermeture (10) est serrée dans une position de fermeture de la soupape (1) au moyen d'un dispositif élastique (17), ce dispositif élastique (17) comportant au moins un ressort (32, 34) pouvant être comprimé, selon une première constante de rappel, d'une position complètement fermée de la soupape (1) à une position intermédiaire partiellement ouverte de la soupape (1) ainsi qu'un ressort (32, 34) pouvant être comprimé, selon une deuxième constante de rappel, d'une position intermédiaire partiellement ouverte de la soupape (1) à une position complètement ouverte de la soupape (1), la première constante de rappel étant différente de la deuxième constante de rappel.
EP19725707.4A 2018-08-27 2019-05-20 Soupape Withdrawn EP3844374A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018214460.5A DE102018214460A1 (de) 2018-08-27 2018-08-27 Ventil
PCT/EP2019/062932 WO2020043329A1 (fr) 2018-08-27 2019-05-20 Soupape

Publications (1)

Publication Number Publication Date
EP3844374A1 true EP3844374A1 (fr) 2021-07-07

Family

ID=66625973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19725707.4A Withdrawn EP3844374A1 (fr) 2018-08-27 2019-05-20 Soupape

Country Status (7)

Country Link
US (1) US20210317778A1 (fr)
EP (1) EP3844374A1 (fr)
JP (1) JP2021535984A (fr)
KR (1) KR20210045481A (fr)
CN (1) CN112567122A (fr)
DE (1) DE102018214460A1 (fr)
WO (1) WO2020043329A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110741146B (zh) * 2018-05-19 2022-03-22 帕德米尼Vna机电私人有限公司 具有改善的空气辅助的双弹簧排气阀
US20230204129A1 (en) * 2020-04-24 2023-06-29 Pierburg Gmbh Blow-off valve

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3422214C2 (de) * 1983-06-16 1994-12-01 Volkswagenwerk Ag Elektromagnetisches Steuerventil
DE20016214U1 (de) * 2000-09-18 2002-02-07 Hengst Walter Gmbh & Co Kg Drosselventil zur selbsttätigen Regelung des Drucks im Kurbelgehäuse einer Brennkraftmaschine
US6737766B1 (en) * 2003-03-14 2004-05-18 Delphi Technologies, Inc. Magnetic actuator and method
US7775240B2 (en) * 2006-02-07 2010-08-17 Sturman Digital Systems, Llc Spool valve
DE102009046822A1 (de) * 2009-11-18 2011-05-19 Robert Bosch Gmbh Schaltventil mit einem in einem Gehäuse bewegbaren Ventilelement
DE102010024297B4 (de) * 2010-06-18 2016-06-16 Pierburg Gmbh Regelvorrichtung für Verbrennungskraftmaschinen
JP5437186B2 (ja) * 2010-07-13 2014-03-12 株式会社ケーヒン 電磁弁
DE102010038520A1 (de) * 2010-07-28 2012-02-02 Robert Bosch Gmbh Magnetventil zum Steuern von Flüssigkeiten
DE102014226844A1 (de) * 2014-12-22 2016-06-23 Continental Automotive Gmbh Ventil
DE102017202511A1 (de) * 2016-12-22 2018-06-28 Continental Automotive Gmbh Ventil

Also Published As

Publication number Publication date
JP2021535984A (ja) 2021-12-23
KR20210045481A (ko) 2021-04-26
WO2020043329A1 (fr) 2020-03-05
CN112567122A (zh) 2021-03-26
US20210317778A1 (en) 2021-10-14
DE102018214460A1 (de) 2020-02-27

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