WO2014202473A1 - Soupape de régulation de pression - Google Patents

Soupape de régulation de pression Download PDF

Info

Publication number
WO2014202473A1
WO2014202473A1 PCT/EP2014/062328 EP2014062328W WO2014202473A1 WO 2014202473 A1 WO2014202473 A1 WO 2014202473A1 EP 2014062328 W EP2014062328 W EP 2014062328W WO 2014202473 A1 WO2014202473 A1 WO 2014202473A1
Authority
WO
WIPO (PCT)
Prior art keywords
medium
pressure control
control valve
valve
pressure
Prior art date
Application number
PCT/EP2014/062328
Other languages
German (de)
English (en)
Inventor
Bernd Stuke
Alexander Wernau
Martin Katz
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 WO2014202473A1 publication Critical patent/WO2014202473A1/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
    • F02M63/0057—Means for avoiding fuel contact with valve actuator, e.g. isolating actuators by using bellows or diaphragms
    • 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
    • F02M63/005—Pressure relief valves
    • F02M63/0052—Pressure relief valves with means for adjusting the opening pressure, e.g. electrically controlled
    • 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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/023—Means for varying pressure in common rails
    • F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure

Definitions

  • the present invention relates to a pressure regulating valve having the features of
  • Pressure control valves are used for example in fuel injection systems
  • pressure control valves are used in common rail injection systems for diesel engines.
  • a high-pressure pump delivers the fuel to be injected to high pressure and feeds it to a high-pressure accumulator, the so-called common rail.
  • a pressure control valve may be provided to adjust and maintain the pressure in the rail depending on a predetermined target pressure.
  • Pressure control valves are often designed as solenoid valves.
  • Fig. 1 shows a conventional pressure control valve.
  • the pressure regulating valve 2 of FIG. 1 has a medium inlet opening 4a and a medium outlet opening 4b.
  • the medium outlet opening 4b is schematically divided in FIG. 1 into a total of four indicated medium outlet openings 4b.
  • Valve element 6 formed from a valve ball 6a, which is pressed by a rod member 6c in the valve seat 6b, is further provided.
  • the drive unit 8 which acts on rod element 6 c, opening and closing of the valve element 6 can be achieved by releasing or pressing the valve ball 6 a from / to the valve seat 6 b.
  • the pressure control valve 2 is characterized in that the valve ball 6a is held in the control position by means of the rod element 6c, the stroke of the ball valve or valve element 6 is thus adjusted in such a way that via the valve seat
  • the counterforce to the hydraulic load through the pressure control valve to be transported medium is provided via the drive unit 8, exemplified by a magnetic actuator provided.
  • the hydraulic forces near the operating point must not vary significantly.
  • Pressure control valve after the medium has passed the narrowest cross section in the valve seat, axially guided along the rod member radially outward.
  • a flow path runs along the spherical surface, following the rod element up to the medium outlet openings 4b, another along the conical valve seat up to the medium outlet openings 4b.
  • the conventional pressure control valve has a long guide for the
  • the object of the present invention is to provide an improved
  • the pressure regulating valve is constructed in such a way that, on the one hand, a medium-loaded first region and a second region which is not medium-stressed are formed. This is achieved in that the pressure regulating valve has a medium-tight sealing element, which is the range of
  • the medium through the pressure regulating valve is thus substantially exclusively in the range of
  • Inlet opening arranged over the valve element to the outlet opening.
  • Medium connection in this context means that a medium entering through the inlet opening in the
  • Pressure control valve flow and exit via the outlet may like.
  • the medium-tight sealing element is realized, for example, by providing the sealing element directly above the valve ball, for example in the form of an elastic membrane. This is the actuator part of the sealing element
  • the drive unit which may be of conventional construction, acts on one side of the sealing element, while the valve element, in particular with its constituent valve ball and valve seat, is arranged on the other, opposite side of the membrane.
  • a holder of the valve ball for example, by a suitable
  • Receiving element for example, a dome element, be realized, which on the one hand provides a certain guidance of the valve ball, on the other hand can also be designed such that the valve ball mounted in the holding element or
  • valve element in a rest state without external power supply, in particular without power supply by the drive unit, be designed such that it remains in an open state.
  • the application of force by the drive unit can thus be used essentially exclusively for closing the valve element.
  • the drive unit itself need not be frictionally connected to the sealing element, but can only apply a force on the sealing element, which deforms this due to its flexibility and thereby the
  • Valve element and in particular the valve ball moves, for example, presses on the valve seat, thereby closing the valve element and thus the pressure control valve. Due to the medium separation and in particular the non-admission of the
  • Drive side with medium can thus no medium to drive, for example, trained as a magnetic drive, even reach, it can thus include no air or other gases, and also the formation or deposition of viscous medium at low temperatures to the drive unit and
  • Decomposition products can not settle in the guide of the rod and there is no temperature input from the medium to the drive unit. This results in that cheaper materials can be used on the drive side, which in particular need not be media-resistant.
  • the surrounding medium may be air, alternatively, due to the encapsulation of the pressure control valve, a (different) suitable medium, such as a suitable silicone oil, are filled.
  • a (different) suitable medium such as a suitable silicone oil
  • the sealing effect of the membrane can be supplemented by further sealing elements, such as an O-ring.
  • a diaphragm must not be made too thick in order to be able to transmit elastically the power of the drive unit.
  • the membrane requires a sufficiently high compressive strength against occurring pressure surges and can additionally take over the function of a spring to open the valve in a defined manner or to keep it open without power.
  • the holding element or dome element can be suitably connected to the membrane, in particular by a magnetic
  • Drive units designed as a plunger armature or flat armature, feasible, with a particular design is particularly dependent on an operating characteristic of the drive unit, which should be designed such that, together with the
  • a conventionally provided rod element may be much shorter or in the
  • a stable medium flow may be realized.
  • the flow around the valve ball can be stabilized. This may be achieved particularly preferably by the
  • the sealing element in particular a membrane, has means for pressure measurement, with which a Deformation of the sealing element can be detected and wherein on the deformation of the sealing element, a pressure can be determined.
  • a pressure measurement provides information about the pressure in the rail, wherein the pressure measurement on the
  • Sealing element is more accurate than a model-based pressure determination via the actuator flow of the pressure control valve. It is particularly advantageous if the means for
  • Pressure measurement include strain gauges.
  • About strain gauges can be easily, inexpensively and with high accuracy detect a deformation of the sealing element, in particular a sealing membrane, whereby a relatively accurate
  • Membrane are arranged. By arranging on the "dry" side, i.e. not in contact with the medium, a simple contacting of the
  • Pressure control valve in a high-pressure accumulator for a fuel injection system come to fruition, a high pressure accumulator is further indicated with a pressure control valve according to the invention.
  • FIG. 1 shows an exemplary embodiment of a pressure regulating valve
  • FIG. 2a, b show exemplary embodiments of pressure control valves according to the present invention.
  • Fig. 4 is a sealing element of a pressure control valve according to the invention
  • FIGS. 2a, b exemplary embodiments of pressure control valves according to the present invention are illustrated.
  • FIGS. 2 a, b are schematic representations of different embodiments of the pressure control valve 2.
  • the pressure control valves according to FIGS. 2 a and 2 b differ by their drive unit 8, which in FIG. 2 a functions as a magnetic drive unit with plunger armature and in FIG magnetic drive unit is formed with flat armature.
  • a medium for example diesel fuel, enters the pressure regulating valve 2 via the medium inlet opening 4a.
  • the pressure control valve 2 is shown in the closed state, thus the valve element 6 is closed by the valve ball 6a rests on the valve seat 6b.
  • Valve ball 6a is suitably formed
  • the holding element 14 is attached to the medium-tight sealing element 12, which has a certain flexibility on the one hand and a certain bias on the other hand, so that in
  • valve element 6 would be in the open state.
  • the rod member 10 of the drive unit 8 engages the valve element 6 opposite side of the medium-tight sealing element and this by suitable force, in Fig. 2a directed downwards, also to move down and so put valve ball 6a towards the valve seat 6b or on press this.
  • the pressure control valve 2 forms due to the medium-tight
  • Sealing element 12 a first region 18 a, which is mediumbeetzschlagt, as well as a second region 18b which is substantially non-medium-pressurized.
  • the drive unit 8 is medium-freed. This may be e.g. not necessarily be a suitably trained
  • rod element 10 can be made comparatively short and essentially immediately following the drive unit 8 on the
  • medium-density sealing element 12 act. Due to the design, at least a slight guidance of the rod element 10 of the drive unit 8 may or may not be necessary.
  • FIG. 3 a detail of one exemplary embodiment of the medium-pressurized portion of the pressure control valve of the present invention is shown in juxtaposition with prior-art pressure control valves.
  • FIG. 3 shows a detailed illustration of the valve element 6 or of the first area 8a of the pressure regulating valve 2.
  • the left side of Fig. 3 illustrates the arrangement in a known pressure control valve, while the right side, to the right of the dashed center axis, represents a structure according to the present invention.
  • known pressure control valves it is shown that the medium has two possible flow paths 1 and 2 and in particular can switch between them. Flow course 1 takes place essentially along the surface of the
  • Valve seat while flow path 2 is formed substantially following the surface of the ball. Due to these two possible flow patterns, the exact course is unpredictable, thus difficult to control and unstable.
  • the flow of the flow in the pressure control valve 2 according to the invention is shown on the right side.
  • the ball valve 6a is enclosed over a large area by the holding element 14 or the Kalottenelement 14, the second flow path of the medium is prevented, since this can no longer flow over the spherical surface, but after a short distance already on
  • Retaining element 14 arrives and is diverted from this or.
  • the space next to the holding element 14 may be designed to be favorable in terms of flow, in particular cavities may be cut off, as indicated in FIG. 3 by the reference numeral 20. This makes it possible to provide a particularly stable medium flow.
  • a sealing element 12 of a pressure control valve 2 according to the invention is shown.
  • the sealing element 12 is designed as a sealing membrane and contributes to his
  • Sealing membrane is designed so that on one side the dome element 14 is attached together with valve ball 6a, on the other side a rod member 10 presses by means of a controllable magnetic force on the sealing membrane. If the magnetic force is reduced, the valve ball 6a rises from the valve seat 6b and the diaphragm deforms due to this load. The load is directly dependent on the pressure in the high-pressure accumulator. Thus, it is possible, the pressure in the high pressure accumulator in addition to a rail pressure sensor with high accuracy and independent of this rail pressure sensor to monitor. As actuators both plunger armature and flat armature according to the embodiments in Fig. 2a and Fig. 2b are conceivable.

Landscapes

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

Abstract

L'invention concerne une soupape de régulation de pression (2) comprenant au moins une ouverture d'entrée de milieu (4a), au moins une ouverture de sortie de milieu (4b), un élément de soupape (6) disposé entre l'ouverture d'entrée de milieu (4a) et l'ouverture de sortie de milieu (4b) et mis au point pour occuper un état ouvert et un état fermé, une liaison de milieu entre l'ouverture d'entrée de milieu et l'ouverture de sortie de milieu étant établie dans l'état ouvert, et une liaison de milieu entre l'ouverture d'entrée de milieu et l'ouverture de sortie de milieu étant interrompue dans l'état fermé, et une unité d'entraînement (8), mise au point pour amener l'élément de soupape (6) d'un état ouvert à un état fermé ou entre ces états. L'invention est caractérisée par un élément d'étanchéité (12) étanche au milieu, disposé entre l'élément de soupape (6) et l'unité d'entraînement (8), de telle manière que la soupape de régulation de pression (2) comprend une première zone (18a) exposée à un milieu et pourvue d'une ouverture d'entrée de milieu, d'un élément de soupape et d'une ouverture de sortie de milieu, ainsi qu'une deuxième zone (18b) pourvue d'une unité d'entraînement, le milieu de la première zone ne pouvant pas passer dans la deuxième zone.
PCT/EP2014/062328 2013-06-21 2014-06-13 Soupape de régulation de pression WO2014202473A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102013211792 2013-06-21
DE102013211792.2 2013-06-21
DE201310219418 DE102013219418A1 (de) 2013-06-21 2013-09-26 Druckregelventil
DE102013219418.8 2013-09-26

Publications (1)

Publication Number Publication Date
WO2014202473A1 true WO2014202473A1 (fr) 2014-12-24

Family

ID=52010484

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/062328 WO2014202473A1 (fr) 2013-06-21 2014-06-13 Soupape de régulation de pression

Country Status (2)

Country Link
DE (1) DE102013219418A1 (fr)
WO (1) WO2014202473A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014226637A1 (de) 2014-12-19 2016-06-23 Robert Bosch Gmbh Druckregelventil mit integriertem Drucksensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083695A1 (fr) * 2003-03-19 2004-09-30 Robert Bosch Gmbh Soupape de limitation de pression
US7624720B1 (en) * 2008-08-01 2009-12-01 Ford Global Technologies, Llc Variable set point fuel pressure regulator
DE102010043097A1 (de) * 2010-10-29 2012-05-03 Robert Bosch Gmbh Druckregelventil
DE102010043092A1 (de) * 2010-10-29 2012-05-03 Robert Bosch Gmbh Druckregelventil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083695A1 (fr) * 2003-03-19 2004-09-30 Robert Bosch Gmbh Soupape de limitation de pression
US7624720B1 (en) * 2008-08-01 2009-12-01 Ford Global Technologies, Llc Variable set point fuel pressure regulator
DE102010043097A1 (de) * 2010-10-29 2012-05-03 Robert Bosch Gmbh Druckregelventil
DE102010043092A1 (de) * 2010-10-29 2012-05-03 Robert Bosch Gmbh Druckregelventil

Also Published As

Publication number Publication date
DE102013219418A1 (de) 2014-12-24

Similar Documents

Publication Publication Date Title
EP2394049B1 (fr) Injecteur de carburant pour moteurs à combustion interne
EP3338014B1 (fr) Système de circuit d'huile d'un moteur à combustion interne avec une soupape commandée en pression et en température
DE102005059169A1 (de) Kraftstoffinjektor mit direkt betätigbarem Einspritzventilglied
EP3478957B1 (fr) Soupape d'injection d'un carburant gazeux
DE102013106214A1 (de) Kolbenschieberventil
DE102008032133B4 (de) Kraftstoffeinspritzvorrichtung
AT519932B1 (de) Ablassventil für hohe Drücke
DE102007047425A1 (de) Steuerventil für einen Kraftstoffinjektor
WO2008061844A1 (fr) Injecteur de carburant
EP3280904B1 (fr) Vanne de gaz
EP1319127B1 (fr) Configuration de soupapes de distribution
EP2833042B1 (fr) Agencement de soupape destiné à commuter et/ou régler un flux de milieu d'un propulseur spatial et propulseur spatial
DE102014220877B3 (de) Kraftstoffeinspritzventil
EP2813728B1 (fr) Soupape de robinet à piston
WO2014202473A1 (fr) Soupape de régulation de pression
WO2011042296A1 (fr) Soupape d'injection de carburant et sa fabrication
DE102009027103A1 (de) Ventilmodul mit fest eingestelltem Ankerhub
AT512296B1 (de) Ventilplatte/ventilkörper mit eingepresster kegelhülse aus hartmetall
DE102010030429A1 (de) Injektor, insbesondere Common-Rail-Injektor
DE102013221532A1 (de) Kraftstoffinjektor
WO2001096732A1 (fr) Vanne de commande de liquides
DE102010019327B4 (de) Ventileinrichtung
DE102012211233A1 (de) Brennstoffeinspritzventil
WO2016134930A1 (fr) Soupape de régulation de pression compensé par pression partielle pour un accumulateur haute pression
WO2005031152A1 (fr) Soupape d'injection avec element de compensation hydraulique

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: 14729672

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14729672

Country of ref document: EP

Kind code of ref document: A1