EP1794443A1 - Pressure regulator for a fuel supply unit and method for production of a pressure regulator - Google Patents

Pressure regulator for a fuel supply unit and method for production of a pressure regulator

Info

Publication number
EP1794443A1
EP1794443A1 EP05787163A EP05787163A EP1794443A1 EP 1794443 A1 EP1794443 A1 EP 1794443A1 EP 05787163 A EP05787163 A EP 05787163A EP 05787163 A EP05787163 A EP 05787163A EP 1794443 A1 EP1794443 A1 EP 1794443A1
Authority
EP
European Patent Office
Prior art keywords
pressure regulator
membrane
piston
regulator according
ring element
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.)
Granted
Application number
EP05787163A
Other languages
German (de)
French (fr)
Other versions
EP1794443B1 (en
Inventor
René Schmid
Karl Eck
Detlev Diesing
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.)
Continental Automotive GmbH
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1794443A1 publication Critical patent/EP1794443A1/en
Application granted granted Critical
Publication of EP1794443B1 publication Critical patent/EP1794443B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/54—Arrangement of fuel pressure regulators
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7834—Valve seat or external sleeve moves to open valve
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7835—Valve seating in direction of flow
    • Y10T137/7836—Flexible diaphragm or bellows reactor
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/494—Fluidic or fluid actuated device making

Definitions

  • Pressure regulator for a fuel delivery unit and method for producing a pressure regulator
  • the invention relates to a pressure regulator for a fuel supply unit of a motor vehicle, with a valve for He ⁇ generation of a connection of a port to an outlet above a designated pressure in the connection, with ei ⁇ nem movable piston and with a held on a fixed ring element membrane Sealing the piston in relation to the ring element. Furthermore, the invention relates to a method for producing a pressure regulator for a fuel ⁇ conveying unit of a motor vehicle, in which a piston of a valve is connected via a membrane sealingly connected to a festste ⁇ ing ring element.
  • Such pressure regulators are frequently used in modern motor vehicles for controlling a pressure in a ne a Brennkraftmaschi ⁇ leading feed line and are known from Pra ⁇ tice.
  • the membrane is clamped between two Ringelemen ⁇ th of the housing and separates the area above the piston from the area below the piston. At the ⁇ circuit opens into the area below the piston.
  • the required clamping force of the membrane is usually generated by crimping around an edge of the ring element.
  • the invention is based on the problem, a pressure regulator of the type mentioned in such a way that a zu ⁇ reliable tightness between the membrane and the ring member is ensured. Furthermore, the invention is based on the problem ⁇ lem to make a method for producing the pressure regulator so that it ensures a particularly reliable waterproofing ⁇ tion of the membrane relative to the ring member.
  • the former problem is inventively achieved in that the membrane is welded to the ring member.
  • the membrane is materially connected to the ring element.
  • This will ratur Scheme below 0 ° C ensure reliable tightness guaranteed ⁇ ⁇ especially in Tempe.
  • Settling joints between the membrane and the ring element, which can lead to leaks after some operating time of the pressure regulator according to the invention, are likewise reliably avoided. This ensures a reliable sealing ⁇ unit between the membrane and the ring element.
  • the tightness between the area below the piston and the region can further increase above the piston when the diaphragm is welded to the piston.
  • a flow through the piston above the intended pressure can be easily ensured according to another advantageous development of the invention if the membrane has a recess for a valve seat arranged in the piston.
  • a permanent tightness of the weld joint is si ⁇ cherosse according to another advantageous embodiment of the invention, when the plastic of the membrane, the piston and the ring member is polyphenylene sulfide.
  • the membrane, the ring element and the piston have according to ei ⁇ ner another advantageous embodiment of the invention, a particularly high stability, when the plastic has inserts made of glass fibers.
  • the welded connection of the membrane can be in accordance with an an ⁇ their advantageous development of the invention produce a particularly cost when the membrane or impermeable that the membrane to be welded component from a ⁇ ray transmissive for a laser material and the other component consists of a for the laser beam Material gefer ⁇ is tiger.
  • the membrane can be welded by means of the laser beam. This leads in particular in a mass production of the pressure regulator according to the invention to very low production costs.
  • the production can also be automated.
  • the ring element could, for example, be an edge of a housing guiding the piston .
  • the housing of the invention shown SEN pressure regulator but is preferably for the Vorspann ⁇ setting force of the spring element against the piston is made from an easily plastically deformable material.
  • the housing can be made according to another advantageousmann ⁇ education of the invention of easily deformable sheet steel and the membrane of plastic, when the ring member is sealingly clamped in a housing.
  • the second-mentioned problem namely the creation of a method for producing the pressure regulator with a particularly reliable sealing of the membrane relative to the ring element, is achieved according to the invention in that the membrane is welded to the ring element.
  • the membrane is materially connected to the ring element. This leads, in particular in the range below 0 ° C, to a particularly reliable sealing of the membrane with respect to the ring element.
  • the piston can be welded to the membrane in an analogous manner.
  • the method according to the invention is particularly cost-effective if the welding takes place in the laser welding process.
  • FIG. 1 shows a longitudinal section through an inventive, designed as a flow valve pressure regulator
  • Figure 2 shows a longitudinal section through a pressure regulator designed as Abregelventil.
  • Figure 1 shows an inventive, designed as a flow control valve pressure regulator with a housing 1 and a displaceably arranged in the housing 1 piston 2.
  • the Druck ⁇ regulator serves to limit a maximum pressure in one not shown supply line of a fuel tank of a motor vehicle.
  • the housing 1 has two of a ring member 3 at a distance held housing parts 4, 5.
  • the pressure regulator has a connection 6 for a pressure line and an outlet 7.
  • the piston 2 is pretensioned against a valve body 10 by means of a spring 8 designed as a spring, with a valve seat 9.
  • This will provides relievege ⁇ that is charged at a pressure in the terminal 6 of the plunger 2 against the force of the spring 8 and is moved above a designated pressure, the piston 2, so that the valve seat 9 lifts off from the valve body 10 degrees.
  • fuel can escape from the connection 6 through the outlet 7 above the intended pressure.
  • the housing parts 4, 5 are made of sheet steel and connected by a bead 12 mit ⁇ each other. By beading 12 a sealing ring 13 between the ring member 3 and the lower housing ⁇ part 5 is biased.
  • a spring 8-retaining edge 14 of the upper housing part 4 is plastically deformable designed and used to calibrate the pressure regulator and thus a ⁇ of the designated pressure, wherein the connection rule zwi ⁇ position the port 6 and the outlet 7 is generated.
  • the ring element 3, the piston 2 and the diaphragm 11 are made of the plastic polyphenylene sulfide.
  • the membrane 11 is connected to the ring element 3 and the piston 2 in Lasersch spaverfah ⁇ ren.
  • Figure 2 shows a formed as a regulating valve Druckreg ⁇ ler. This differs from that of FIG. 1 primarily in that, viewed from a piston 17, an outlet 15 is arranged on the same side as a connection 16. A membrane 18 is exclusively in the radially outer region with Further, the membrane 18 forms a voltage applied to a valve seat 20 of the outlet 15 valve body 21. At a scheduled pressure in the connection 16 of the piston 17 and the diaphragm 18 of the Ven ⁇ tilsitz 20 of the outlet 15 pushed away so that fuel from the port 16 to the outlet 15 can flow over.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Driven Valves (AREA)
  • Control Of Fluid Pressure (AREA)
  • Safety Valves (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

The invention relates to a pressure regulator for a fuel supply unit on a motor vehicle, whereby a membrane (11) is connected to an annular element (3) of the housing (1) and a moving piston (2) by a laser welding technique. A reliable sealing of the membrane (11) is thus guaranteed even at temperatures below 0° C. The region above the piston (2) is thus reliably separated from the region below the piston (2).

Description

Beschreibungdescription
Druckregler für eine Kraftstoff-Fördereinheit und Verfahren zur Herstellung eines DruckreglersPressure regulator for a fuel delivery unit and method for producing a pressure regulator
Die Erfindung betrifft einen Druckregler für eine Kraftstoff- Fördereinheit eines Kraftfahrzeuges mit einem Ventil zur Er¬ zeugung einer Verbindung eines Anschlusses mit einem Auslass oberhalb eines vorgesehenen Drucks in dem Anschluss, mit ei¬ nem beweglichen Kolben und mit einer an einem feststehenden Ringelement gehaltenen Membran zur Abdichtung des Kolbens ge¬ genüber dem Ringelement. Weiterhin betrifft die Erfindung ein Verfahren zur Herstellung eines Druckreglers für eine Kraft¬ stoff-Fördereinheit eines Kraftfahrzeuges, bei dem ein Kolben eines Ventils über eine Membran dichtend mit einem festste¬ henden Ringelement verbunden wird.The invention relates to a pressure regulator for a fuel supply unit of a motor vehicle, with a valve for He ¬ generation of a connection of a port to an outlet above a designated pressure in the connection, with ei ¬ nem movable piston and with a held on a fixed ring element membrane Sealing the piston in relation to the ring element. Furthermore, the invention relates to a method for producing a pressure regulator for a fuel ¬ conveying unit of a motor vehicle, in which a piston of a valve is connected via a membrane sealingly connected to a festste ¬ ing ring element.
Solche Druckregler werden in heutigen Kraftfahrzeugen häufig zur Regelung eines Drucks in einer zu einer Brennkraftmaschi¬ ne führenden Vorlaufleitung eingesetzt und sind aus der Pra¬ xis bekannt. Die Membran ist dabei zwischen zwei Ringelemen¬ ten des Gehäuses eingespannt und trennt den Bereich oberhalb des Kolbens von dem Bereich unterhalb des Kolbens. Der An¬ schluss mündet dabei in den Bereich unterhalb des Kolbens. Die erforderliche Spannkraft der Membran wird meist durch Um- bördelung eines Randes des Ringelementes erzeugt.Such pressure regulators are frequently used in modern motor vehicles for controlling a pressure in a ne a Brennkraftmaschi¬ leading feed line and are known from Pra ¬ tice. The membrane is clamped between two Ringelemen ¬ th of the housing and separates the area above the piston from the area below the piston. At the ¬ circuit opens into the area below the piston. The required clamping force of the membrane is usually generated by crimping around an edge of the ring element.
Nachteilig bei dem bekannten Druckregler ist, dass die Ab¬ dichtung der Membran insbesondere im Temperaturbereich unter¬ halb 0° C nicht ausreichend ist, um den vorgesehenen Druck, bei dem der Druckregler öffnen soll, in einem engen Toleranz¬ bereich zu halten. Häufig kann der Druckregler durch Undich¬ tigkeiten am Außenrand vollständig ausfallen. Der Erfindung liegt das Problem zugrunde, einen Druckregler der eingangs genannten Art so weiterzubilden, dass eine zu¬ verlässige Dichtheit zwischen der Membran und dem Ringelement sichergestellt wird. Weiterhin liegt der Erfindung das Prob¬ lem zugrunde, ein Verfahren zur Herstellung des Druckreglers so zu gestalten, dass es eine besonders zuverlässige Abdich¬ tung der Membran gegenüber dem Ringelement gewährleistet.A disadvantage of the known pressure regulators that the Ab ¬ seal the membrane in particular in the temperature range unter¬ semi 0 ° C is not sufficient to maintain the intended pressure at which the pressure regulator is intended to open, area in a narrow Toleranz¬. Often the pressure regulator can fail completely due to leakages on the outer edge. The invention is based on the problem, a pressure regulator of the type mentioned in such a way that a zu¬ reliable tightness between the membrane and the ring member is ensured. Furthermore, the invention is based on the problem ¬ lem to make a method for producing the pressure regulator so that it ensures a particularly reliable waterproofing ¬ tion of the membrane relative to the ring member.
Das erstgenannte Problem wird erfindungsgemäß dadurch gelöst, dass die Membran mit dem Ringelement verschweißt ist.The former problem is inventively achieved in that the membrane is welded to the ring member.
Durch diese Gestaltung ist die Membran Stoffschlüssig mit dem Ringelement verbunden. Hierdurch wird insbesondere im Tempe¬ raturbereich unter 0° C eine zuverlässige Dichtheit gewähr¬ leistet. Setzfugen zwischen der Membran und dem Ringelement, die nach einiger Betriebszeit des erfindungsgemäßen Druckreg¬ lers zu Undichtigkeiten führen können, werden ebenfalls zu¬ verlässig vermieden. Hierdurch wird eine zuverlässige Dicht¬ heit zwischen der Membran und dem Ringelement gewährleistet.By this design, the membrane is materially connected to the ring element. This will raturbereich below 0 ° C ensure reliable tightness guaranteed ¬ ¬ especially in Tempe. Settling joints between the membrane and the ring element, which can lead to leaks after some operating time of the pressure regulator according to the invention, are likewise reliably avoided. This ensures a reliable sealing ¬ unit between the membrane and the ring element.
Bei einem erfindungsgemäßen, als Durchflussventil ausgebilde¬ ten Druckregler lässt sich die Dichtheit zwischen dem Bereich unterhalb des Kolbens und dem Bereich oberhalb des Kolbens weiter erhöhen, wenn die Membran mit dem Kolben verschweißt ist.In an inventive, having formed as a flow valve ¬ th pressure regulator, the tightness between the area below the piston and the region can further increase above the piston when the diaphragm is welded to the piston.
Ein Durchfluss durch den Kolben oberhalb des vorgesehenen Drucks lässt sich gemäß einer anderen vorteilhaften Weiter¬ bildung der Erfindung einfach sicherstellen, wenn die Membran eine Ausnehmung für einen im Kolben angeordneten Ventilsitz hat.A flow through the piston above the intended pressure can be easily ensured according to another advantageous development of the invention if the membrane has a recess for a valve seat arranged in the piston.
Eine Verschweißung der Membran mit dem Kolben und dem Ring¬ element gestaltet sich gemäß einer anderen vorteilhaften Wei- terbildung der Erfindung besonders kostengünstig, wenn das Ringelement und der Kolben aus Kunststoff gefertigt sind.Welding of the membrane with the piston and the annular element takes place according to another advantageous method. Training the invention particularly cost, if the ring member and the piston are made of plastic.
Eine dauerhafte Dichtheit der Schweißverbindung wird gemäß einer anderen vorteilhaften Weiterbildung der Erfindung si¬ chergestellt, wenn der Kunststoff der Membran, des Kolbens und des Ringelements Polyphenylensulfid ist.A permanent tightness of the weld joint is si¬ chergestellt according to another advantageous embodiment of the invention, when the plastic of the membrane, the piston and the ring member is polyphenylene sulfide.
Die Membran, das Ringelement und der Kolben weisen gemäß ei¬ ner anderen vorteilhaften Weiterbildung der Erfindung eine besonders hohe Stabilität auf, wenn der Kunststoff Einlagen aus Glasfasern hat.The membrane, the ring element and the piston have according to ei ¬ ner another advantageous embodiment of the invention, a particularly high stability, when the plastic has inserts made of glass fibers.
Die Schweißverbindung der Membran lässt sich gemäß einer an¬ deren vorteilhaften Weiterbildung der Erfindung besonders kostengünstig erzeugen, wenn die Membran oder das mit der Membran zu verschweißende Bauteil aus einem für einen Laser¬ strahl durchlässigen Material und das jeweils andere Bauteil aus einem für den Laserstrahl undurchlässigen Material gefer¬ tigt ist. Durch diese Gestaltung lässt sich die Membran mit¬ tels des Laserstrahls schweißen. Dies führt insbesondere bei einer Serienfertigung des erfindungsgemäßen Druckreglers zu besonders geringen Fertigungskosten. Die Fertigung lässt sich zudem automatisieren.The welded connection of the membrane can be in accordance with an an¬ their advantageous development of the invention produce a particularly cost when the membrane or impermeable that the membrane to be welded component from a ¬ ray transmissive for a laser material and the other component consists of a for the laser beam Material gefer¬ is tiger. With this configuration, the membrane can be welded by means of the laser beam. This leads in particular in a mass production of the pressure regulator according to the invention to very low production costs. The production can also be automated.
Das Ringelement könnte beispielsweise ein Rand eines den Kol¬ ben führenden Gehäuses sein. Das Gehäuse des erfindungsgemä¬ ßen Druckreglers wird jedoch zur Einstellung der Vorspann¬ kraft des Federelementes gegen den Kolben vorzugsweise aus einem einfach plastisch verformbaren Material gefertigt. Das Gehäuse lässt sich gemäß einer anderen vorteilhaften Weiter¬ bildung der Erfindung aus leicht verformbarem Stahlblech und die Membran aus Kunststoff fertigen, wenn das Ringelement in einem Gehäuse abdichtend eingespannt ist. Das zweitgenannte Problem, nämlich die Schaffung eines Ver¬ fahrens zur Herstellung des Druckreglers mit einer besonders zuverlässigen Abdichtung der Membran gegenüber dem Ringele¬ ment, wird erfindungsgemäß dadurch gelöst, dass die Membran mit dem Ringelement verschweißt wird.The ring element could, for example, be an edge of a housing guiding the piston . The housing of the invention shown SEN pressure regulator but is preferably for the Vorspann¬ setting force of the spring element against the piston is made from an easily plastically deformable material. The housing can be made according to another advantageous Weiter¬ education of the invention of easily deformable sheet steel and the membrane of plastic, when the ring member is sealingly clamped in a housing. The second-mentioned problem, namely the creation of a method for producing the pressure regulator with a particularly reliable sealing of the membrane relative to the ring element, is achieved according to the invention in that the membrane is welded to the ring element.
Hierdurch werden beim Umbördeln entstehende Setzfugen wie bei dem bekannten Ringelement zuverlässig vermieden. Die Membran ist dank der Erfindung Stoffschlüssig mit dem Ringelement verbunden. Dies führt insbesondere im Bereich unterhalb von 0° C zu einer besonders zuverlässigen Abdichtung der Membran gegenüber dem Ringelement. Bei einem als Durchgangsventil ausgebildeten Druckregler kann in analoger Weise der Kolben mit der Membran verschweißt werden.As a result, settling joints arising during crimping are reliably avoided as in the known ring element. Thanks to the invention, the membrane is materially connected to the ring element. This leads, in particular in the range below 0 ° C, to a particularly reliable sealing of the membrane with respect to the ring element. When designed as a passage valve pressure regulator, the piston can be welded to the membrane in an analogous manner.
Das erfindungsgemäße Verfahren gestaltet sich gemäß einer vorteilhaften Weiterbildung der Erfindung besonders kosten¬ günstig, wenn die Verschweißung im Laserschweißverfahren er¬ folgt.According to an advantageous development of the invention, the method according to the invention is particularly cost-effective if the welding takes place in the laser welding process.
Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur wei¬ teren Verdeutlichung ihres Grundprinzips sind zwei davon in der Zeichnung dargestellt und werden nachfolgend beschrieben. Diese zeigt inThe invention allows numerous embodiments. To further clarify their basic principle, two of them are shown in the drawing and will be described below. This shows in
Figur 1 einen Längsschnitt durch einen erfindungsgemäßen, als Durchflussventil ausgebildeten Druckregler,1 shows a longitudinal section through an inventive, designed as a flow valve pressure regulator,
Figur 2 einen Längsschnitt durch einen als Abregelventil ausgebildeten Druckregler.Figure 2 shows a longitudinal section through a pressure regulator designed as Abregelventil.
Figur 1 zeigt einen erfindungsgemäßen, als Durchflussventil ausgebildeten Druckregler mit einem Gehäuse 1 und einem in dem Gehäuse 1 verschieblich angeordneten Kolben 2. Der Druck¬ regler dient zur Begrenzung eines Maximaldrucks in einer nicht dargestellten Vorlaufleitung eines Kraftstoffbehälters eines Kraftfahrzeuges. Das Gehäuse 1 weist zwei von einem Ringelement 3 auf Abstand gehaltene Gehäuseteile 4, 5 auf. Der Druckregler hat einen Anschluss 6 für eine Druckleitung und einen Auslass 7. Der Kolben 2 ist mittels einer als Wen¬ delfeder ausgebildeten Feder 8 mit einem Ventilsitz 9 gegen einen Ventilkörper 10 vorgespannt.Figure 1 shows an inventive, designed as a flow control valve pressure regulator with a housing 1 and a displaceably arranged in the housing 1 piston 2. The Druck¬ regulator serves to limit a maximum pressure in one not shown supply line of a fuel tank of a motor vehicle. The housing 1 has two of a ring member 3 at a distance held housing parts 4, 5. The pressure regulator has a connection 6 for a pressure line and an outlet 7. The piston 2 is pretensioned against a valve body 10 by means of a spring 8 designed as a spring, with a valve seat 9.
Eine mit dem Ringelement 3 und dem Kolben 2 verbundene Memb¬ ran 11 dichtet den Bereich unterhalb des Kolbens 2 von dem Bereich oberhalb des Kolbens 2 ab. Hierdurch wird sicherge¬ stellt, dass bei einem Druck in dem Anschluss 6 der Kolben 2 gegen die Kraft der Feder 8 belastet wird und oberhalb eines vorgesehenen Drucks der Kolben 2 bewegt wird, so dass der Ventilsitz 9 von dem Ventilkörper 10 abhebt. Damit kann ober¬ halb des vorgesehenen Drucks Kraftstoff von dem Anschluss 6 durch den Auslass 7 entweichen. Die Gehäuseteile 4, 5 sind aus Stahlblech gefertigt und durch eine Umbördelung 12 mit¬ einander verbunden. Durch die Umbördelung 12 wird ein Dicht¬ ring 13 zwischen dem Ringelement 3 und dem unteren Gehäuse¬ teil 5 vorgespannt. Ein die Feder 8 haltender Rand 14 des oberen Gehäuseteils 4 ist plastisch verformbar gestaltet und dient zur Kalibrierung des Druckreglers und damit zur Ein¬ stellung des vorgesehenen Drucks, bei dem die Verbindung zwi¬ schen dem Anschluss 6 und dem Auslass 7 erzeugt wird. Das Ringelement 3, der Kolben 2 und die Membran 11 sind aus dem Kunststoff Polyphenylensulfid gefertigt. Die Membran 11 ist mit dem Ringelement 3 und dem Kolben 2 im Laserschweißverfah¬ ren verbunden.A connected to the ring member 3 and the piston 2 Memb ¬ ran 11 seals the area below the piston 2 from the area above the piston 2 from. This will provides sicherge ¬ that is charged at a pressure in the terminal 6 of the plunger 2 against the force of the spring 8 and is moved above a designated pressure, the piston 2, so that the valve seat 9 lifts off from the valve body 10 degrees. Thus, fuel can escape from the connection 6 through the outlet 7 above the intended pressure. The housing parts 4, 5 are made of sheet steel and connected by a bead 12 mit¬ each other. By beading 12 a sealing ring 13 between the ring member 3 and the lower housing ¬ part 5 is biased. A spring 8-retaining edge 14 of the upper housing part 4 is plastically deformable designed and used to calibrate the pressure regulator and thus a ¬ of the designated pressure, wherein the connection rule zwi¬ position the port 6 and the outlet 7 is generated. The ring element 3, the piston 2 and the diaphragm 11 are made of the plastic polyphenylene sulfide. The membrane 11 is connected to the ring element 3 and the piston 2 in Laserschweißverfah¬ ren.
Figur 2 zeigt einen als Abregelventil ausgebildeten Druckreg¬ ler. Dieser unterscheidet sich von dem aus Figur 1 vor allem dadurch, dass von einem Kolben 17 aus gesehen ein Auslass 15 auf derselben Seite wie ein Anschluss 16 angeordnet ist. Eine Membran 18 ist ausschließlich im radial äußeren Bereich mit einem Ringelement 19 verschweißt und überdeckt den gesamten Querschnitt des Kolbens 17. Weiterhin bildet die Membran 18 einen an einem Ventilsitz 20 des Auslasses 15 anliegenden Ventilkörper 21. Bei einem vorgesehenen Druck in dem An- schluss 16 wird der Kolben 17 und die Membran 18 von dem Ven¬ tilsitz 20 des Auslasses 15 weggedrückt, so dass Kraftstoff von dem Anschluss 16 zu dem Auslass 15 überströmen kann. Figure 2 shows a formed as a regulating valve Druckreg ¬ ler. This differs from that of FIG. 1 primarily in that, viewed from a piston 17, an outlet 15 is arranged on the same side as a connection 16. A membrane 18 is exclusively in the radially outer region with Further, the membrane 18 forms a voltage applied to a valve seat 20 of the outlet 15 valve body 21. At a scheduled pressure in the connection 16 of the piston 17 and the diaphragm 18 of the Ven¬ tilsitz 20 of the outlet 15 pushed away so that fuel from the port 16 to the outlet 15 can flow over.

Claims

Patentansprüche claims
1. Druckregler für eine Kraftstoff-Fördereinheit eines Kraftfahrzeuges mit einem Ventil zur Erzeugung einer Verbindung eines Anschlusses mit einem Auslass oberhalb eines vorgesehenen Drucks in dem Anschluss, mit einem beweglichen Kolben und mit einer an einem feststehenden Ringelement gehaltenen Membran zur Abdichtung des Kol¬ bens gegenüber dem Ringelement, d a d u r c h g e ¬ k e n n z e i c h n e t , dass die Membran mit dem Ring¬ element verschweißt ist.1. Pressure regulator for a fuel delivery unit of a motor vehicle with a valve for generating a connection of a terminal with an outlet above a designated pressure in the terminal, with a movable piston and with a held on a fixed ring member membrane for sealing the Kol¬ bens the ring element, dadurchge ¬ indicates that the membrane with the ring ¬ element is welded.
2. Druckregler nach Anspruch 1, d a d u r c h g e ¬ k e n n z e i c h n e t , dass die Membran mit dem Kolben verschweißt ist.2. The pressure regulator according to claim 1, characterized in that the membrane is welded to the piston.
3. Druckregler nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , dass die Membran eine Aus¬ nehmung für einen im Kolben angeordneten Ventilsitz hat.3. Pressure regulator according to claim 1 or 2, characterized in that the membrane has a recess from ¬ for a valve seat arranged in the piston.
4. Druckregler nach zumindest einem der vorhergehenden An¬ sprüche, d a d u r c h g e k e n n z e i c h n e t , dass das Ringelement und der Kolben aus Kunststoff ge¬ fertigt sind.4. Pressure regulator according to at least one of the preceding An¬ claims, characterized in that the ring element and the piston are made of plastic GE ¬ .
5. Druckregler nach zumindest einem der vorhergehenden An¬ sprüche, d a d u r c h g e k e n n z e i c h n e t , dass der Kunststoff der Membran, des Kolbens und des Ringelements Polyphenylensulfid ist.5. The pressure regulator according to claim 1, wherein the plastic of the membrane, of the piston and of the ring element is polyphenylene sulfide.
6. Druckregler nach zumindest einem der vorhergehenden An¬ sprüche, d a d u r c h g e k e n n z e i c h n e t , dass der Kunststoff Einlagen aus Glasfasern hat. 6. Pressure regulator according to at least one of the preceding An¬ claims, characterized in that the plastic has inserts of glass fibers.
7. Druckregler nach zumindest einem der vorhergehenden An¬ sprüche, d a d u r c h g e k e n n z e i c h n e t , dass die Membran oder das mit der Membran zu verschwei¬ ßende Bauteil aus einem für einen Laserstrahl durchläs¬ sigen Material und das jeweils andere Bauteil aus einem für den Laserstrahl undurchlässigen Material gefertigt ist.7. Pressure regulator according to at least claims one of the preceding An¬, characterized in that the membrane or is made with the membrane to verschwei ¬ sequent component consists of a a laser beam durchläs ¬ sigen material and the other component made of a material impermeable to the laser beam Material ,
8. Druckregler nach zumindest einem der vorhergehenden An¬ sprüche, d a d u r c h g e k e n n z e i c h n e t , dass das Ringelement in einem Gehäuse abdichtend einge¬ spannt ist.8. Pressure regulator according to at least one of the preceding An¬ claims, characterized in that the ring element is sealingly ¬ clamped in a housing.
9. Verfahren zur Herstellung eines Druckreglers für eine Kraftstoff-Fördereinheit eines Kraftfahrzeuges, bei dem ein Kolben eines Ventils über eine Membran dichtend mit einem feststehenden Ringelement verbunden wird, d a ¬ d u r c h g e k e n n z e i c h n e t , dass die Membran mit dem Ringelement verschweißt wird.9. A method for producing a pressure regulator for a fuel delivery unit of a motor vehicle, in which a piston of a valve is connected via a membrane sealingly connected to a stationary ring member, d a ¬ d u r c h e c e n e c e s in that the membrane is welded to the ring member.
10. Verfahren nach Anspruch 9, d a d u r c h g e k e n n ¬ z e i c h n e t , dass die Verschweißung im Laser¬ schweißverfahren erfolgt. 10. The method according to claim 9, characterized in that the welding takes place in the laser welding process.
EP20050787163 2004-10-01 2005-09-14 Pressure regulator for a fuel supply unit and method for production of a pressure regulator Active EP1794443B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410048392 DE102004048392B4 (en) 2004-10-01 2004-10-01 Pressure regulator for a fuel delivery unit and method for producing a pressure regulator
PCT/EP2005/054560 WO2006037712A1 (en) 2004-10-01 2005-09-14 Pressure regulator for a fuel supply unit and method for production of a pressure regulator

Publications (2)

Publication Number Publication Date
EP1794443A1 true EP1794443A1 (en) 2007-06-13
EP1794443B1 EP1794443B1 (en) 2011-05-18

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US (2) US7828010B2 (en)
EP (1) EP1794443B1 (en)
JP (1) JP4691106B2 (en)
KR (1) KR20070059142A (en)
CN (1) CN101031718B (en)
DE (1) DE102004048392B4 (en)
ES (1) ES2366703T3 (en)
WO (1) WO2006037712A1 (en)

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Also Published As

Publication number Publication date
CN101031718B (en) 2011-08-03
DE102004048392B4 (en) 2012-10-31
US20110290347A1 (en) 2011-12-01
US7828010B2 (en) 2010-11-09
DE102004048392A1 (en) 2006-04-06
WO2006037712A1 (en) 2006-04-13
ES2366703T3 (en) 2011-10-24
CN101031718A (en) 2007-09-05
KR20070059142A (en) 2007-06-11
JP2008514886A (en) 2008-05-08
JP4691106B2 (en) 2011-06-01
US20080053534A1 (en) 2008-03-06
EP1794443B1 (en) 2011-05-18

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