EP2137400B1 - Pressure control valve - Google Patents
Pressure control valve Download PDFInfo
- Publication number
- EP2137400B1 EP2137400B1 EP08717877.8A EP08717877A EP2137400B1 EP 2137400 B1 EP2137400 B1 EP 2137400B1 EP 08717877 A EP08717877 A EP 08717877A EP 2137400 B1 EP2137400 B1 EP 2137400B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- volume
- housing
- regulating valve
- control valve
- 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.)
- Active
Links
- 230000001105 regulatory effect Effects 0.000 claims description 26
- 239000000446 fuel Substances 0.000 claims description 23
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000000696 magnetic material Substances 0.000 claims description 7
- 239000011888 foil Substances 0.000 claims 3
- 230000000694 effects Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
- F02M63/0019—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of electromagnets or fixed armatures
-
- 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
- F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
- F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
-
- 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
-
- 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
- F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail
Definitions
- DE 102 14 084 A1 refers to an adjustable pressure control valve for fuel injection systems.
- the fuel injection system comprises a high-pressure storage space, which is acted upon by a high-pressure delivery unit with high-pressure fuel and which supplies fuel injectors with fuel.
- the high pressure pumping unit is associated with a pressure control valve which is arranged between a high pressure side and a low pressure side and comprises a valve element which can be controlled via an electric actuator.
- the pressure regulating valve comprises a housing component which contains a deformable region, by means of which a gap L between surfaces of an electrically controllable actuator arrangement can be set when the pressure regulating valve is mounted in a receiving body.
- DE 102 22 895 A1 refers to a high-pressure accumulator for fuel injection systems with integrated pressure control valve.
- the high-pressure storage space is acted upon by a high-pressure delivery unit with fuel under high pressure and in turn supplies fuel injectors with fuel.
- the fuel injection system comprises a pressure regulating valve, which is arranged between a high-pressure side and a low-pressure side and via which a valve element can be actuated.
- the pressure control valve is actuated by an electric actuator.
- the pressure regulating valve defines with one end face the low-pressure region at the high-pressure reservoir and is sealed by a low-pressure seal.
- Pressure regulators are used in a variety of applications and are, as above DE 102 14 084 A1 and DE 102 22 895 A1 described, used on fuel injection systems (common rail). These pressure control valves have points of discontinuity and instabilities in the pressure flow characteristic field or in its control range. In particular, the return pressure also has a strong influence on the controllability or the achievable control quality of the pressure regulating valves known from the prior art.
- the present invention has for its object to provide an improved pressure control valve, which has a greater robustness to the occurrence of instability, in particular by the influence of constant or varying pressures on the low pressure side (return pressure, back pressure).
- the stability of the pressure control valve is improved, especially at elevated back pressure, since due to the smaller volume effective hydraulic forces are reduced, which cause the instabilities in hitherto known from the prior art pressure control valves.
- the volume between the armature and the above-mentioned housing plan area filled with a non-magnetic material is thereby further increased.
- the filling of the residual air gap between the armature and the above-mentioned housing plan surface of the pressure control valve, in particular of the magnetic coil receiving magnetic core for example, by applying or inserting a film.
- a coating can also be applied both to the end face of the armature that points to the housing plan surface and to the housing plan surface itself.
- the inventively proposed pressure control valve is distinguished from known from the prior art pressure control valves, as briefly outlined above, characterized in that on the one hand, the volume between the armature and housing plan surface is reduced, in which the discharged from the high pressure side medium drains and / or on the other hand this already reduced volume between magnet armature and housing plan surface is filled with a non-magnetic material.
- FIG. 1 shows a pressure / flow characteristics for a pressure control valve according to the prior art.
- FIG. 1 shows a pressure / flow characteristic field 10, in which the pressure, ie the system pressure, which is applied to a high-pressure accumulator (common rail) of a high-pressure accumulator injection system, is plotted against the flow of the pressure control valve in l / h.
- the pressure ie the system pressure
- a high-pressure accumulator common rail
- a high-pressure accumulator injection system for constant pressure control valve currents are different characteristic curves (pressure over flow) 12, each characterized by an area in which there is an instability 14.
- the instability 14 is characterized in that, for a first operating point A and a second operating point B, a flow value is assigned a plurality of system pressure values, ie an undefined state of the pressure control valve is present.
- the representation according to FIG. 2 is a pressure / flow chart 10 can be seen, which is included for a proposed invention pressure control valve.
- characteristic curves are also shown here 12, however, in contrast to the instabilities 14 in the characteristic curves 12 according to FIG. 1 characterized by continuous gradients 16.
- FIG. 3 shows a section through the inventively proposed pressure control valve.
- FIG. 3 shown in section pressure control valve 20 comprises a secured to a housing 22, for example via a support ring 68 mounting member 74 with external thread.
- this mounting element 74 which is fixed on the circumference of the housing 22 of the inventive proposed pressure control valve 20 via the support ring 68 in the axial direction, the pressure control valve 20 in a high-pressure accumulator body 72, which in the illustration FIG. 3 only partially shown attached. Due to the screw connection between an internal thread in the high-pressure reservoir body 72 at the mounting location, a pressure-tight connection between the pressure regulating valve 20 proposed according to the invention and the interior of the high-pressure reservoir body 72 (common rail) takes place. In this system pressures of up to 2000 bar and more prevail.
- the system pressure p is in the high-pressure accumulator body 72 by a in FIG. 3 not shown high-pressure pumping unit, such as maintained via a high-pressure pump, regardless of the speed of a fuel to be supplied to internal combustion engine.
- FIG. 3 shows that the housing 22 of the present invention proposed pressure control valve 20, an electrical connection 24 is formed for electrical contacting of the present invention proposed pressure control valve 20.
- This insert limits the stroke of an anchor plate 34 of an armature assembly 32, which further comprises an anchor bolt 50 extending through an anchor bolt bore 52 of the housing 22 of the present invention proposed pressure control valve 20.
- the insert 26 is sealed by a first seal 28 against the housing 22 of the present invention proposed pressure control valve 20.
- the armature plate 34 accommodated on the anchor bolt 50 of the armature assembly 32 has a plan side 36 which assigns an end face 38 of the housing 22 of the pressure control valve 20.
- the plan side 36 of the armature plate 34 of the armature assembly 32 is acted upon by a compression spring 30 which is received in a bore of the end face 38 of the housing 22 of the pressure control valve 20.
- a magnetic coil 46 In the housing 22 of the pressure control valve 20 is further a magnetic coil 46, the of an embedding 44 enclosed in the housing 22 of the pressure control valve 20 is embedded. This in FIG.
- This reduced volume 40 represents a Abgresraum in which the volume discharged from the high-pressure region of the high-pressure accumulator body 72 when opening a valve element 54 occurs and this reduced volume 40 accordingly fills.
- a reduction of this volume between the armature assembly 32 and the end face 38 of the housing 22 and its filling with the high-pressure side controlled medium medium is possible to enter this volume, but due to the reduced volume 40 and due to the thereby reduced hydraulic Forces to a better stability of the pressure control valve 20, especially at elevated counter pressures leads.
- the filling of the previously existing air gap between the plane side 36 of the anchor plate 34 and the end face 38 of the housing 22 by an amagnetic material, ie the filling volume 42, can be achieved by either the plan side 36 of the anchor plate 34 or the end face 38th of the housing 22, a film or a coating is applied.
- This coating or film can be applied on the flat side 36 of the anchor plate 34 and / or on the end face 38 of the housing 22.
- the remaining residual air gap on the closed pressure control valve 20 can thereby assume an extremely low value.
- the anchor bolt 50 of the armature assembly 32 extends through the anchor bolt bore 52 in the housing 22 of the present invention proposed pressure control valve 20.
- the high pressure storage body 72 zu flode tip of the anchor bolt 52 is conical and actuates a valve member 54, which in the in FIG. 3 illustrated embodiment of the invention proposed pressure control valve 20 is designed as a ball.
- the valve element 54 is placed in its seat 56, which is formed in a seat ring 58.
- the seat ring 58 is embodied at the end of the housing 22 of the pressure regulating valve 20 proposed according to the invention, which lies opposite the cavity, ie the area of the high-pressure accumulator 52 acted upon by system pressure p.
- a channel 60 extends, via which flows from the cavity of the high-pressure accumulator body (common rail) fuel via a filter 62.
- the pressure accumulator body 72 relieves pressure.
- the valve element 74 is open via the channel 60, the seat 56, the volume of fuel diverted in the discharge lines 70 is returned to the tank of the high-pressure accumulator injection system via a low-pressure return.
- the return can not be returned directly into the tank, but are fed back to a possibly provided in fuel injection systems prefeed pump, which generates higher back pressures.
- a disk 64 may be connected upstream to compensate for manufacturing tolerances. Furthermore, located on the peripheral surface of the housing 22 of the pressure regulating valve 20 between the Abêttechnisch 70 and the support ring 68 for fixing the mounting member 74, a second seal further.
- the greater robustness and the avoidance of points of discontinuity and instabilities 14 in the characteristic curve 12 are achieved by the volume previously present at pressure regulating valves 20 between the plane side 36 of the anchor plate 34 of the end face 38 of the housing 22 through the filling volume 42, which is preferably represented by an amagnetic material, is reduced. Due to the reduced volume 40, which is then still filled by the discarded medium, a significant reduction of the hydraulic forces, which otherwise in volume between the armature plate 34 of the end face 38 of the housing 22 is effective would be achievable, which in turn favors the precision of actuation of the armature assembly 32.
- the remaining reduced volume 40 between the flat side 36 of the armature plate 34 and the end face 38 of the housing 22 of Pressure control valve 20 filled with the filling volume 42 of non-magnetic material.
- This filling volume 42 can be realized either in the form of a coating or in the form of the introduction of a film or the like.
- the measure of the formation of a reduced volume 40 can be taken together with the introduction of a filling volume 42 between the planar side 36 of the anchor plate and the end face 38 of the housing 22, or it can only a reduction of the volume 40 are performed, as well as an introduction of the Filling volume 42 between the flat side 36 of the anchor plate and the end face 38 of the housing 22.
- the compression spring 30 and the spring which acts on the anchor plate 34
- only one of these two springs may be present, ie either only the compression spring 30 or only the anchor plate 34 acting on its back, inserted into the insert 26 spring. In the Fig. 3 both possible installation positions are reproduced.
- the reduction of the volume 40 as well as the introduction of the filling volume 42 of non-magnetic material can also be realized on solenoid valves which are used to actuate fuel injectors on fuel injection systems, such as high-pressure accumulator injection systems (common rail).
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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)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Druckregelventile kommen in den verschiedensten Anwendungen zum Einsatz und werden, wie oben aus
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein verbessertes Druckregelventil bereitzustellen, welches eine größere Robustheit gegenüber dem Auftreten von Instabilität insbesondere durch den Einfluss konstanter oder variierender Drücke auf der Niederdruckseite (Rücklaufdruck, Gegendruck) aufweist.The present invention has for its object to provide an improved pressure control valve, which has a greater robustness to the occurrence of instability, in particular by the influence of constant or varying pressures on the low pressure side (return pressure, back pressure).
Erfindungsgemäß wird vorgeschlagen, ein Volumen zwischen einem Magnetanker und einer Gehäuseplanfläche, welche sich mit dem von der Hochdruckseite abgesteuerten Medium, wie zum Beispiel Kraftstoff, füllt, zu verkleinern. Dadurch wird die Stabilität des Druckregelventiles insbesondere bei erhöhtem Gegendruck verbessert, da aufgrund des geringeren Volumens wirksame hydraulische Kräfte reduziert sind, die bei bisher eingesetzten aus dem Stand der Technik bekannten Druckregelventilen die Instabilitäten verursachen. Um das Volumen, welches die Druck-Stromkennlinie eines Druckregelventiles beeinflusst und in das abgesteuerte Menge eintritt und in welchem hydraulische Kräfte auftreten, zu verringern und trotz geringem Restluftspalt so wie bisher gestalten zu können, wird das Volumen zwischen dem Magnetanker und der oben stehend erwähnten Gehäuseplanfläche mit einem nicht-magnetischen Material aufgefüllt. Die Robustheit gegen das Auftreten von Instabilitäten wird dadurch weiter erhöht.According to the invention, it is proposed to reduce a volume between a magnet armature and a housing plan surface which fills with the medium which has been diverted from the high-pressure side, for example fuel. As a result, the stability of the pressure control valve is improved, especially at elevated back pressure, since due to the smaller volume effective hydraulic forces are reduced, which cause the instabilities in hitherto known from the prior art pressure control valves. In order to reduce the volume, which affects the pressure-flow characteristic of a pressure control valve and enters the diverted amount and in which hydraulic forces occur and to be able to design as in the past despite a small residual air gap, the volume between the armature and the above-mentioned housing plan area filled with a non-magnetic material. The robustness against the occurrence of instabilities is thereby further increased.
Das Ausfüllen des Restluftspaltes zwischen dem Magnetanker und der oben stehend bereits erwähnten Gehäuseplanfläche des Druckregelventiles, insbesondere des die Magnetspule aufnehmenden Magnetkernes erfolgt zum Beispiel durch Aufbringen oder Einlegen einer Folie. Daneben kann auch eine Beschichtung sowohl auf der der Gehäuseplanfläche zuweisenden Stirnseite des Ankers als auch auf der Gehäuseplanfläche selbst aufgebracht werden. Der erfindungsgemäß vorgeschlagenen Lösung folgend wird eine Entkopplung zwischen dem Volumen um die Ankerplatte der Ankerbaugruppe des Druckregelventiles und dem Volumen, in dem das Medium, wie zum Beispiel unter Systemdruck stehender Kraftstoff, aus dem Hochdruckbereich abgesteuert wird, hergestellt.The filling of the residual air gap between the armature and the above-mentioned housing plan surface of the pressure control valve, in particular of the magnetic coil receiving magnetic core, for example, by applying or inserting a film. In addition, a coating can also be applied both to the end face of the armature that points to the housing plan surface and to the housing plan surface itself. Following the solution proposed according to the invention, a decoupling between the volume around the armature plate of the armature assembly of the pressure regulating valve and the volume in which the medium, for example fuel under system pressure, is removed from the high-pressure region, is produced.
Das erfindungsgemäß vorgeschlagene Druckregelventil zeichnet sich gegenüber aus dem Stand der Technik bekannten Druckregelventilen, wie oben stehend kurz skizziert, dadurch aus, dass einerseits das Volumen zwischen Magnetanker und Gehäuseplanfläche verkleinert ist, in das das von der Hochdruckseite her abgesteuerte Medium abströmt und/oder andererseits dieses bereits verkleinerte Volumen zwischen Magnetanker und Gehäuseplanfläche mit einem nicht-magnetischen Material verfüllt ist. Dies bedeutet, dass im Idealfall das verkleinerte Volumen zwischen Gehäuseplanfläche und Planseite des Magnetankers bei geschlossenem Ventil zu Null wird, so dass Instabilitäten erheblich reduziert werden können.The inventively proposed pressure control valve is distinguished from known from the prior art pressure control valves, as briefly outlined above, characterized in that on the one hand, the volume between the armature and housing plan surface is reduced, in which the discharged from the high pressure side medium drains and / or on the other hand this already reduced volume between magnet armature and housing plan surface is filled with a non-magnetic material. This means that, ideally, the scaled down When the valve is closed, the volume between the housing plan face and the face side of the magnet armature becomes zero, so that instabilities can be considerably reduced.
Anhand der Zeichnungen wird die Erfindung nachstehend eingehender beschrieben.With reference to the drawings, the invention will be described in more detail below.
Es zeigt:
Figur 1- ein Druck-/Durchflusskennfeld eines Druckregelventils gemäß dem Stand der Technik bei einem anliegenden Gegendruck von etwa 5 bar,
- Figur 2
- das Druck-/Durchflusskennfeld eines erfindungsgemäß vorgeschlagenen Druckregelventils bei einem anliegenden Gegendruck zwischen 5 und 6 bar und
- Figur 3
- einen Schnitt durch das erfindungsgemäß vorgeschlagene Druckregelventil.
- FIG. 1
- a pressure / flow chart of a pressure control valve according to the prior art with an applied back pressure of about 5 bar,
- FIG. 2
- the pressure / flow characteristics of a proposed pressure control valve according to the invention at an applied back pressure between 5 and 6 bar and
- FIG. 3
- a section through the inventively proposed pressure control valve.
Aus der Darstellung gemäß
Der Darstellung gemäß
Ein in
Aus
Der Einsatz 26 ist über eine erste Dichtung 28 gegen das Gehäuse 22 des erfindungsgemäß vorgeschlagenen Druckregelventiles 20 abgedichtet. Die am Ankerbolzen 50 der Ankerbaugruppe 32 aufgenommene Ankerplatte 34 weist eine Planseite 36 auf, die einer Stirnseite 38 des Gehäuses 22 des Druckregelventiles 20 zuweist. Die Planseite 36 der Ankerplatte 34 der Ankerbaugruppe 32 ist durch eine Druckfeder 30 beaufschlagt, die in einer Bohrung der in der Stirnseite 38 des Gehäuses 22 des Druckregelventiles 20 aufgenommen ist. Im Gehäuse 22 des Druckregelventiles 20 befindet sich des weiteren eine Magnetspule 46, die von einer Einbettung 44 umschlossen, in das Gehäuse 22 des Druckregelventiles 20 eingebettet ist. Das in
Wie in
Wie aus der Darstellung gemäß
Aus der Darstellung gemäß
Bei dem erfindungsgemäß vorgeschlagenen Druckregelventil 20 wird die größere Robustheit und das Vermeiden von Unstetigkeitsstellen und Instabilitäten 14 im Kennlinienverlauf 12 dadurch erreicht, dass das bisher an Druckregelventilen 20 vorhandene Volumen zwischen der Planseite 36 der Ankerplatte 34 der Stirnseite 38 des Gehäuses 22 durch das Füllvolumen 42, welches bevorzugt durch ein amagnetisches Material dargestellt wird, reduziert wird. Aufgrund des verringerten Volumens 40, welches dann noch durch das abgesteuerte Medium ausgefüllt wird, ist eine erhebliche Verringerung der hydraulischen Kräfte, die andernfalls im Volumen zwischen der Ankerplatte 34 der Stirnseite 38 des Gehäuses 22 wirksam werden würden erzielbar, was wiederum die Präzision der Betätigung der Ankerbaugruppe 32 begünstigt. Um den nicht-magnetischen Spalt 48, welcher die Druck-Stromkennlinie des erfindungsgemäß vorgeschlagenen Druckregelventiles 20 bestimmt, trotz kleinem Luftspalt hinreichend groß gestalten zu können, wird das verbliebene verringerte Volumen 40 zwischen der Planseite 36 der Ankerplatte 34 und der Stirnseite 38 des Gehäuses 22 des Druckregelventiles 20 mit dem Füllvolumen 42 aus amagnetischem Material aufgefüllt. Dieses Füllvolumen 42 kann entweder in Form einer Beschichtung oder in Form des Einbringens einer Folie oder dergleichen realisiert sein. Wenn das erfindungsgemäß vorgeschlagene Druckregelventil 20 geschlossen ist, besteht zwischen der Stirnseite 38 des Gehäuses 22 und der Planseite 36 der Ankerplatte 34 ein verbleibender nicht-magnetischer Spalt, der durch das Füllvolumen 42 so reduziert ist; dass hydraulische Kräfte nicht zu den in Zusammenhang mit
Die Verringerung des Volumens 40 sowie das Einbringen des Füllvolumens 42 aus nicht-magnetischem Material können auch an Magnetventilen verwirklicht werden, die zur Betätigung von Kraftstoffinjektoren an Kraftstoffeinspritzsystemen, wie zum Beispiel Hochdruckspeichereinspritzsystemen (Common-Rail) eingesetzt werden.The reduction of the
Claims (9)
- Pressure regulating valve (20) for a high-pressure accumulator body (72) or a high-pressure delivery pump of a fuel injection system, having a housing (22), having an armature assembly (32), having an armature plate (34) and having an armature pin (50), wherein a system pressure p of at least > 1500 bar prevails in the high-pressure accumulator body (72) whereas, in the housing (22) of the pressure regulating valve (20), the pressure is determined by the pressure prevailing in a discharge line (70), wherein the armature plate (34) and a face side (38) of the housing (22) form a volume (40) that can be filled with medium discharged from the high-pressure accumulator body (72), characterized in that the volume (40) is reduced by a filled volume (42), and the pressure regulating valve (20) is designed to effect a release of pressure from the high-pressure accumulator body (72) if the system pressure p exceeds a certain maximum pressure.
- Pressure regulating valve (20) according to Claim 1, characterized in that the filled volume (42) is a non-magnetic material.
- Pressure regulating valve (20) according to Claim 1, characterized in that the filled volume (42) is inserted between a planar side (36) of the armature plate (34) and a face side (38) of the housing (22).
- Pressure regulating valve (20) according to Claim 2, characterized in that the filled volume (42) is in the form of a foil or a coating.
- Pressure regulating valve (20) according to Claim 3, characterized in that the filled volume (42) in the form of a foil or a coating is applied to a planar side (36) of the armature plate (34) or is inlaid between the planar side (36) and the face side (38) of the housing (22).
- Pressure regulating valve (20) according to Claim 3, characterized in that the filled volume (42) in the form of a foil or a coating is applied to the face side (38) of the housing (22).
- Pressure regulating valve (20) according to Claim 3, characterized in that a non-magnetic gap (48) remains between the filled volume (42) and the planar side (36) of the armature plate (34) or the face side (38) of the housing (22).
- Pressure regulating valve (20) according to Claim 1, characterized in that a volume in an insert (26) of the housing (22), in which volume the armature plate (34) of the armature assembly (32) is accommodated, is decoupled from the reduced volume (40) into which medium from the high-pressure accumulator (42) is discharged.
- Pressure regulating valve (20) according to one or more of the preceding claims, characterized in that said pressure regulating valve is arranged in a fuel injection system, in particular in a high-pressure accumulator-type injection system.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007013525A DE102007013525A1 (en) | 2007-03-21 | 2007-03-21 | Pressure control valve |
PCT/EP2008/053140 WO2008113776A1 (en) | 2007-03-21 | 2008-03-17 | Pressure control valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2137400A1 EP2137400A1 (en) | 2009-12-30 |
EP2137400B1 true EP2137400B1 (en) | 2013-05-29 |
Family
ID=39590403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08717877.8A Active EP2137400B1 (en) | 2007-03-21 | 2008-03-17 | Pressure control valve |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110220740A1 (en) |
EP (1) | EP2137400B1 (en) |
JP (1) | JP2010521621A (en) |
CN (1) | CN101641514A (en) |
DE (1) | DE102007013525A1 (en) |
ES (1) | ES2412232T3 (en) |
WO (1) | WO2008113776A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009026477A1 (en) | 2009-05-26 | 2010-12-02 | Robert Bosch Gmbh | Pressure control valve, in particular for a high-pressure accumulator body of a fuel injection system |
DE102010026501A1 (en) | 2010-07-07 | 2012-01-12 | Kendrion Binder Magnete Gmbh | Pressure control valve |
DE102011013702B4 (en) * | 2011-03-11 | 2016-02-04 | Kendrion (Villingen) Gmbh | Electromagnetic actuator |
FR2973076A1 (en) * | 2011-03-25 | 2012-09-28 | Bosch Gmbh Robert | PRESSURE REGULATOR, DIESEL INJECTION DEVICE COMPRISING SUCH A REGULATOR, DIESEL ENGINE COMPRISING SUCH AN INJECTION DEVICE AND VEHICLE COMPRISING SUCH AN ENGINE |
RU2513051C2 (en) * | 2012-06-26 | 2014-04-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский автомобильно-дорожный государственный технический университет (МАДИ)" | Diesel fuel pump (versions) |
DE102012214920A1 (en) * | 2012-08-22 | 2014-02-27 | Continental Automotive Gmbh | Damping surface on valve components |
DE102012216534A1 (en) * | 2012-09-17 | 2014-03-20 | Robert Bosch Gmbh | Pressure control valve for a fuel injection system |
JP6076718B2 (en) * | 2012-12-05 | 2017-02-08 | ボッシュ株式会社 | Pressure control valve |
CN103277548B (en) * | 2013-05-31 | 2015-09-02 | 龙口龙泵燃油喷射有限公司 | A kind of common rail pipe protection valve |
FR3009344B1 (en) * | 2013-07-31 | 2015-08-07 | Delphi Technologies Holding | INTEGRATED ARRANGEMENT OF A HIGH PRESSURE VALVE AND AN INJECTION RAMP |
JP6201504B2 (en) * | 2013-08-09 | 2017-09-27 | 株式会社デンソー | Fuel injection device |
FR3061935A1 (en) | 2017-01-18 | 2018-07-20 | Robert Bosch Gmbh | PRESSURE REGULATOR FOR A COMMON RAIL OF A HIGH PRESSURE INJECTION FACILITY |
MX2021002863A (en) * | 2018-09-12 | 2021-05-28 | Smc Corp | Compressed-fluid discharge control device. |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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GB1293492A (en) * | 1971-05-28 | 1972-10-18 | Pierburg Autogeraetebau K G A | Electromagnetic fuel valves for internal combustion engines and method of adjusting the valve stroke |
JPS60153466A (en) * | 1984-01-23 | 1985-08-12 | Nippon Denso Co Ltd | Electromagnetic fuel injection valve |
US4883252A (en) * | 1989-01-23 | 1989-11-28 | Colt Industries Inc. | Electromagnet and valve assembly |
IT1257958B (en) * | 1992-12-29 | 1996-02-19 | Mario Ricco | ELECTROMAGNETIC CONTROL DOSING VALVE REGISTRATION DEVICE, FOR A FUEL INJECTOR |
JPH07279792A (en) * | 1994-04-01 | 1995-10-27 | Toyota Motor Corp | Solenoid valve device |
JP4277158B2 (en) * | 2000-04-11 | 2009-06-10 | 株式会社デンソー | Solenoid valve and fuel injection device using the same |
US6499668B2 (en) * | 2000-12-29 | 2002-12-31 | Siemens Automotive Corporation | Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal |
DE10131199A1 (en) * | 2001-06-28 | 2003-01-16 | Bosch Gmbh Robert | Solenoid valve for controlling an injection valve of an internal combustion engine |
DE10131201A1 (en) * | 2001-06-28 | 2003-01-16 | Bosch Gmbh Robert | Solenoid valve for controlling an injection valve of an internal combustion engine |
US20030178509A1 (en) * | 2002-03-19 | 2003-09-25 | Visteon Global Technologies, Inc. | Fuel injector with flux washer |
DE10214084A1 (en) * | 2002-03-28 | 2003-10-30 | Bosch Gmbh Robert | Adjustable pressure control valve for fuel injection systems |
DE10222895A1 (en) | 2002-05-23 | 2003-12-11 | Bosch Gmbh Robert | High pressure accumulator for fuel injection systems with integrated pressure control valve |
US6606977B1 (en) * | 2002-09-17 | 2003-08-19 | Stanadyne Corporation | Fluid delivery line geometry optimization |
US7028928B2 (en) * | 2002-12-02 | 2006-04-18 | Caterpillar Inc. | Hard coating of an impact surface of a solenoid actuator and fuel injector using same |
-
2007
- 2007-03-21 DE DE102007013525A patent/DE102007013525A1/en not_active Withdrawn
-
2008
- 2008-03-17 CN CN200880009116.4A patent/CN101641514A/en active Pending
- 2008-03-17 US US12/532,325 patent/US20110220740A1/en not_active Abandoned
- 2008-03-17 EP EP08717877.8A patent/EP2137400B1/en active Active
- 2008-03-17 ES ES08717877T patent/ES2412232T3/en active Active
- 2008-03-17 WO PCT/EP2008/053140 patent/WO2008113776A1/en active Application Filing
- 2008-03-17 JP JP2009554013A patent/JP2010521621A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CN101641514A (en) | 2010-02-03 |
ES2412232T3 (en) | 2013-07-10 |
WO2008113776A1 (en) | 2008-09-25 |
EP2137400A1 (en) | 2009-12-30 |
JP2010521621A (en) | 2010-06-24 |
DE102007013525A1 (en) | 2008-09-25 |
US20110220740A1 (en) | 2011-09-15 |
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