WO1997004259A1 - Throttle valve - Google Patents

Throttle valve Download PDF

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Publication number
WO1997004259A1
WO1997004259A1 PCT/EP1996/001921 EP9601921W WO9704259A1 WO 1997004259 A1 WO1997004259 A1 WO 1997004259A1 EP 9601921 W EP9601921 W EP 9601921W WO 9704259 A1 WO9704259 A1 WO 9704259A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
throttle valve
degrees
fixed element
valve according
Prior art date
Application number
PCT/EP1996/001921
Other languages
German (de)
French (fr)
Inventor
Helmuth Fischer
Thomas Reinhold
Martin Schetter
Martin Weindorf
Original Assignee
Filterwerk Mann + Hummel 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 Filterwerk Mann + Hummel Gmbh filed Critical Filterwerk Mann + Hummel Gmbh
Publication of WO1997004259A1 publication Critical patent/WO1997004259A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1675—Making multilayered or multicoloured articles using exchangeable mould halves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F02D9/104—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F02D9/104—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing
    • F02D9/1045—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing for sealing of the flow in closed flap position, e.g. the housing forming a valve seat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F02D9/106—Sealing of the valve shaft in the housing, e.g. details of the bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/748—Machines or parts thereof not otherwise provided for
    • B29L2031/7506—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/107—Manufacturing or mounting details

Definitions

  • the invention relates to a valve and a method for producing a valve.
  • valves are known, for example as a throttle valve in the air intake tract of an internal combustion engine. If you want to use such valves, for example, as a throttle valve in an air intake tract of an internal combustion engine, it is disadvantageous that the previously known valves have to be laboriously preassembled from several parts.
  • the manufacturing tolerances in the closing area are very precise so that the amount of leakage air does not exceed a certain order of magnitude. It is also important that the closing area be followed by a subsequent accuracy area in order to ensure that when the throttle valve is operated there are no abrupt changes in flow which subsequently cause the internal combustion engine speed to increase abruptly.
  • the accuracy of the gap width is guaranteed by the use of two-component injection molding technology.
  • the accuracy range has a progression zone and / or a closing range and a passband. This differentiated division of the accuracy range guarantees safe and controlled opening and closing of the valve with defined passage conditions.
  • the movable element is a flap which can be rotated about the bearing areas. By using a flap, it is possible to accommodate the valve mechanism completely in the intake manifold cross section.
  • the accuracy range with respect to the final closed position is between - 20 degrees and + 20 degrees.
  • the flow conditions in the pipe can be suitably, e.g. change very precisely with one stone.
  • the passage area is between 5 degrees and 90 degrees with respect to the final closed position.
  • a minimum range for the closure is required, which is in the range up to about 5 degrees.
  • a flap inclined by up to about 5 degrees to the cross-sectional area represents a flow resistance that suitably supports the closing effect.
  • An advantageous development of the invention provides that the flow area is designed such that the gap between the moving and the fixed element increases with increasing opening angle of the movable element.
  • Another advantageous development of the invention provides that the bearing clearance due to the different shrinkage of the valve axis and the fixed element z. B. is adjustable by means of adjusting screws in the area of the flap axis.
  • a method for producing a valve is shown.
  • the valve is manufactured in the so-called two-component injection molding process, i. H. first a component, i. H. the nozzle, manufactured, then the throttle valve is cast after a tool movement and formation of a cavity.
  • the nozzle is manufactured in a first operation, then at least one slide of the injection molding tool is opened and the throttle valve is cast
  • the slides extending into the connecting piece are designed as partial slides. These slide valves are separated approximately in the middle, two of the four slide valves being removed to produce the cavities for the throttle valve and replaced by further slide valves. The removal and replacement takes place in a particularly advantageous manner on a turntable on which the tool is arranged.
  • the pivots can also be cast simultaneously with the throttle valve. To avoid accumulation of material and for easy attachment of a throttle valve actuator, cavities are formed in the trunnions during manufacture.
  • Figure 1 shows a valve in a sectional view
  • Figure 2 shows a tool for the manufacture of the valve
  • FIG. 3 shows the tool according to FIG. 2 with exchanged slide elements
  • Figure 4 shows a throttle valve in a side view
  • Figure 5 shows an adjusting device of the throttle valve.
  • the valve shown in the figure has the function of a throttle valve and consists of a housing 10 which is formed in one piece and in which a throttle valve 11 is arranged so as to be rotatable about the axis 12.
  • the throttle valve moves within a defined swivel range in a connection piece 13.
  • This connection piece has a spherical zone in the area 14 and a sealing zone at the contact area 15 of the throttle valve.
  • valves All parts of the valve are made of plastic, the throttle valve 11 and the nozzle 13 being produced in the so-called two-component injection molding process.
  • the tool then opens in a sectional plane that corresponds to the position of the throttle valve by the amount of the throttle valve thickness, so that the throttle valve is produced in the subsequent operation. Since the nozzle and the throttle valve are injection molded in one tool, neither is created The center offset still creates tolerances that lead to leaks between the connector and the throttle valve.
  • either the throttle valve 11 or the connecting piece 13 is produced in an injection molding machine and then extrusion-coated with the counterpart in a subsequent operation.
  • the immediately successive injection molding of the nozzle and throttle valve causes the plastic mass of the throttle valve to seal against the plastic of the nozzle. Since the plastic mass of the nozzle has already cooled and the cooling process of the throttle valve only begins later and the shrinkage of the throttle valve also begins later, a precisely defined gap is created between the nozzle and throttle valve, which can be optimized in terms of process technology.
  • the production in the two-component injection molding process has the advantage that a very large angular range of the adjusting angle of the throttle valve can be designed as a so-called accuracy range.
  • This accuracy range alpha is designed as a spherical zone and can either be used as a sealing area or as an area that allows the plastic throttle valve to open progressively. This makes it possible to either perform an idle air control with a plastic throttle valve in internal combustion engines or to map a control characteristic that causes small flow changes near the closing area of the throttle valve with very long travel ranges and only increases the flow gradient from a larger opening angle.
  • Figure 2 shows a section of a tool in which the complete valve, ie. H. Throttle valve 11 and connector 13 are made.
  • the injection mold consists of two mold halves 16, 17. To produce the connector 13, two half cores 18, 19, 20, 21 are moved into the cavity, and then the cavity for the connector 13 is filled with plastic. In a further operation, the half cores 18 and 21 are removed and two modified half cores 22, 23 are used. Its front end edge is set back relative to the half-cores 18, 21, so that a cavity for the throttle valve 11 is formed. This cavity is filled with thermoplastic. After the plastic has cooled, all cores are removed. Depending on the design of the half cores 22, 23, the wall thickness of the Throttle valve can be varied. There is also the possibility of providing ribbing or the like.
  • FIG. 4 shows a throttle valve in a side view.
  • the throttle valve with the pivot pin is produced in one operation.
  • cylindrical pins can be inserted into the interior during manufacture. After removing these pins, the bores 24, 25 form.
  • the pivot pins extend in an advantageous manner only over part of the throttle valve 11. This allows the throttle valve to be particularly advantageous in terms of flow.
  • Metal pins or the like can be introduced into the bores 24, 25 during the final assembly. Above all, it is possible to attach the throttle valve actuator via one of the holes. For example, a metal web can be pressed into one of the bores for transmission of an actuating movement.
  • FIG. 5 shows an exemplary embodiment in which the adjustment of the valve axis 12 of the valve 11 in the socket 13 by means of adjusting screws 26 can be seen.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The proposal is for a throttle valve. It is fitted to rotate in a tube (13). The throttle valve (11) and the tube (13) are produced in the two-component injection moulding process. The tube (13) has a progressive region.

Description

DROSSELKLAPPE THROTTLE
Die Erfindung betrifft ein Ventil sowie ein Verfahren zur Herstellung eines Ventils.The invention relates to a valve and a method for producing a valve.
Derartige Ventile sind bekannt, zum Beispiel als Drosselklappe im Luftansaugtrakt einer Verbrennungskraftmaschine. Will man derartige Ventile zum Beispiel als Drosselklappe in einem Luftansaugtrakt einer Verbrennungskraftmaschine verwenden, so ist daran nachteilig, daß die bisher bekannten Ventile mühsam aus mehreren Teilen von Hand vormontiert werden müssen.Such valves are known, for example as a throttle valve in the air intake tract of an internal combustion engine. If you want to use such valves, for example, as a throttle valve in an air intake tract of an internal combustion engine, it is disadvantageous that the previously known valves have to be laboriously preassembled from several parts.
Weiter ist ein solches Verfahren aus der europäischen Patentanmeldung 0 311 875 bekannt.Such a method is also known from European patent application 0 311 875.
Es ist somit Aufgabe der Erfindung, ein Ventil bzw. ein Verfahren zur Herstellung desselben dahingehend zu verbessern, daß ein solches geschaffen wird, das einfacher, billiger und sicher in der Anwendung ist. Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß ein Ventil geschaffen wird, das die Merkmale des Anspruchs 1 aufweist sowie durch die Fertigung des Ventils in Zwei-Komponenten-Spritzgießverfahren.It is therefore an object of the invention to improve a valve or a method for producing the same in such a way that one is created which is simpler, cheaper and safe to use. According to the invention this object is achieved in that a valve is created which has the features of claim 1 and by the manufacture of the valve in two-component injection molding processes.
Für den sicheren Betrieb des Ventils, zum Beispiel im Einsatz als Drosselklappe in einem Verbrennungskraftfahrzeug, ist es notwendig, daß die Fertigungstoleranzen im Schließbereich sehr exakt ausfallen, damit die Leckluftmenge eine bestimmte Größenordnung nicht überschreitet. Weiter ist es wichtig, daß sich dem Schließbereich ein nachfolgender Genauigkeitsbereich anschließt, um sicherzustellen, daß bei der Bedienung der Drosselklappe keine abrupten Strömungsänderungen, die in der Folge ein abruptes Ansteigen der Verbrennungskraftmaschinendrehzahl bewirken, auftreten. Die Genauigkeit der Spaltbreite wird durch die Anwendung der Zwei-Komponenten-Spritzgießtechnik gewährleistet.For the safe operation of the valve, for example when used as a throttle valve in an internal combustion engine, it is necessary for the manufacturing tolerances in the closing area to be very precise so that the amount of leakage air does not exceed a certain order of magnitude. It is also important that the closing area be followed by a subsequent accuracy area in order to ensure that when the throttle valve is operated there are no abrupt changes in flow which subsequently cause the internal combustion engine speed to increase abruptly. The accuracy of the gap width is guaranteed by the use of two-component injection molding technology.
Eine vorteilhafte Weiterbildung der Erfindung sieht vor, daß der Genauigkeitsbereich eine Progressionszone und/oder einen Schließbereich und einen Durchlaßbereich aufweist. Diese differenzierte Aufteilung des Genauigkeitsbereichs garantiert ein sicheres und kontrolliertes Öffnen und Schließen des Ventils, bei definierten Durchlassverhältnissen. In einer weiteren vorteilhaften Weiterbildung ist vorgesehen, daß das bewegliche Element eine um die Lagerbereiche drehbare Klappe ist. Durch die Verwendung einer Klappe ist es möglich, den Ventilmechanismus komplett im Saugrohrquerschnitt unterzubringen.An advantageous development of the invention provides that the accuracy range has a progression zone and / or a closing range and a passband. This differentiated division of the accuracy range guarantees safe and controlled opening and closing of the valve with defined passage conditions. In a further advantageous development it is provided that the movable element is a flap which can be rotated about the bearing areas. By using a flap, it is possible to accommodate the valve mechanism completely in the intake manifold cross section.
Eine vorteilhafte Weiterbildung der Erfindung sieht vor, daß der Genauigkeitsbereich bezüglich der Endschließlage zwischen - 20 Grad und + 20 Grad liegt. In diesem Bereich lassen sich die Strömungsverhältnisse im Rohr geeigneterweise, z.B. mit einer Klappe sehr genau verändern.An advantageous development of the invention provides that the accuracy range with respect to the final closed position is between - 20 degrees and + 20 degrees. In this area, the flow conditions in the pipe can be suitably, e.g. change very precisely with one stone.
In einer anderen vorteilhaften Weiterbildung ist vorgesehen, daß der Durchlaßbereich bezüglich der Endschließlage zwischen 5 Grad und 90 Grad liegt. Zum einen ist ein Minimalbereich für die Schließung erforderlich, der im Bereich bis ca. 5 Grad liegt, zum anderen stellt z. B. eine um bis zu ca. 5 Grad zur Querschnittsfläche geneigte Klappe einen Strömungswiderstand dar , der geeigneterweise die Schließ Wirkung unterstützt.Another advantageous further development provides that the passage area is between 5 degrees and 90 degrees with respect to the final closed position. On the one hand, a minimum range for the closure is required, which is in the range up to about 5 degrees. B. a flap inclined by up to about 5 degrees to the cross-sectional area represents a flow resistance that suitably supports the closing effect.
Eine vorteilhafte Weiterbildung der Erfindung sieht vor, daß der Durchflußbereich so gestaltet ist, daß mit zunehmendem Öffhungswinkel des beweglichen Elements der Spalt zwischen bewegtem und feststehendem Element zunimmt.An advantageous development of the invention provides that the flow area is designed such that the gap between the moving and the fixed element increases with increasing opening angle of the movable element.
Eine weitere vorteilhafte Weiterbildung der Erfindung sieht vor, daß das Lagerspiel aufgrund der unterschiedlichen Schrumpfung von Klappenachse und feststehendem Element z. B. mittels Justierschrauben im Bereich der Klappenachse einstellbar ist.Another advantageous development of the invention provides that the bearing clearance due to the different shrinkage of the valve axis and the fixed element z. B. is adjustable by means of adjusting screws in the area of the flap axis.
Weiterbildungsgemäß wird ein Verfahren zur Herstellung eines Ventils dargestellt. Insbesondere wird das Ventil im sog. Zweikomponenten-Spritzgießverfahren gefertigt, d. h. zunächst wird eine Komponente, d. h. der Stutzen, hergestellt, anschließend wird nach einer Werkzeugbewegung und Bildung einer Kavität die Drosselklappe gegossen.According to a further development, a method for producing a valve is shown. In particular, the valve is manufactured in the so-called two-component injection molding process, i. H. first a component, i. H. the nozzle, manufactured, then the throttle valve is cast after a tool movement and formation of a cavity.
In einer erfindungsgemäßen Weiterbildung ist vorgesehen, daß in einem ersten Arbeitsgang der Stutzen gefertigt wird, anschließend wenigstens ein Schieber des Spritzgießwerkzeugs geöffnet und die Drosselklappe gegossen wirdIn a further development according to the invention it is provided that the nozzle is manufactured in a first operation, then at least one slide of the injection molding tool is opened and the throttle valve is cast
Eine vorteilhafte Weiterbildung der Erfindung sieht vor, die sich in den Stutzen erstreckenden Schieber als Teilschieber auszugestalten. Diese Teilschieber sind näherungsweise in der Mitte getrennt, wobei zur Erzeugung der Kavitäten für die Drosselklappe zwei der vier Teilschieber herausgenommen und durch weitere Teilschieber ersetzt werden. Das Herausnehmen und Ersetzen erfolgt in einer besonders vorteilhaften Weise auf einem Drehteller, auf welchem das Werkzeug angeordnet ist. Gleichzeitig mit der Drosselklappe können auch die Drehzapfen gegossen werden. Zur Vermeidung von Materialansammlungen und zur einfachen Befestigung eines Drosselklappenstellelements werden bei der Herstellung in den Drehzapfen Kavitäten gebildet.An advantageous development of the invention provides that the slides extending into the connecting piece are designed as partial slides. These slide valves are separated approximately in the middle, two of the four slide valves being removed to produce the cavities for the throttle valve and replaced by further slide valves. The removal and replacement takes place in a particularly advantageous manner on a turntable on which the tool is arranged. The pivots can also be cast simultaneously with the throttle valve. To avoid accumulation of material and for easy attachment of a throttle valve actuator, cavities are formed in the trunnions during manufacture.
Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei der Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird.These and further features of preferred developments of the invention are evident from the claims and also from the description and the drawings, the individual features being implemented individually or in groups in the form of subcombinations in the embodiment of the invention and in other fields, and can represent advantageous and protectable versions for which protection is claimed here.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher erläutert.The invention is explained in more detail below using an exemplary embodiment.
Es zeigt:It shows:
Figur 1 ein Ventil in einer SchnittdarstellungFigure 1 shows a valve in a sectional view
Figur 2 ein Werkzeug für die Herstellung des VentilsFigure 2 shows a tool for the manufacture of the valve
Figur 3 das Werkzeug gemäß Figur 2 mit getauschten Teilschiebern3 shows the tool according to FIG. 2 with exchanged slide elements
Figur 4 eine Drosselklappe in einer SeitenansichtFigure 4 shows a throttle valve in a side view
Figur 5 eine Justiervorrichtung der Drosselklappe.Figure 5 shows an adjusting device of the throttle valve.
Das in der Figur gezeigte Ventil hat die Funktion einer Drosselklappe und besteht aus einem Gehäuse 10, welches einstückig ausgebildet ist und in dem eine Drosselklappe 11 um die Achse 12 drehbar gelagert angeordnet ist. Innerhalb eines definierten Schwenkbereiches bewegt sich die Drosselklappe in einem Stutzen 13. Dieser Stutzen weist im Bereich 14 eine Kugelzone auf und am Anlagebereich 15 der Drosselklappe eine Dichtzone.The valve shown in the figure has the function of a throttle valve and consists of a housing 10 which is formed in one piece and in which a throttle valve 11 is arranged so as to be rotatable about the axis 12. The throttle valve moves within a defined swivel range in a connection piece 13. This connection piece has a spherical zone in the area 14 and a sealing zone at the contact area 15 of the throttle valve.
Sämtliche Teile des Ventils bestehen aus Kunststoff, wobei die Drosselklappe 11 und der Stutzen 13 im sog. Zwei-Komponenten-Spritzgießverfahren hergestellt werden. Dies bedeutet, daß mit einem einzigen Werkzeug Drosselklappe und Stutzen gespritzt werden, wobei das Werkzeug in einer ersten Stellung zunächst die Kavitäten für den Stutzen bildet. Diese Kavitäten werden mit Kunststoff ausgefüllt. Anschließend öffnet das Werkzeug in einer Schnittebene, die der Lage der Drosselklappe entspricht, um den Betrag der Drosselklappendicke, so daß im nachfolgenden Arbeitsgang die Drosselklappe erzeugt wird. Da der Stutzen und die Drosselklappe in einem Werkzeug gespritzt werden, entsteht weder ein Mittenversatz noch entstehen Toleranzen, die zu Undichtigkeiten zwischen Stutzen und Drosselklappe führen.All parts of the valve are made of plastic, the throttle valve 11 and the nozzle 13 being produced in the so-called two-component injection molding process. This means that throttle valve and nozzle are injected with a single tool, the tool initially forming the cavities for the nozzle in a first position. These cavities are filled with plastic. The tool then opens in a sectional plane that corresponds to the position of the throttle valve by the amount of the throttle valve thickness, so that the throttle valve is produced in the subsequent operation. Since the nozzle and the throttle valve are injection molded in one tool, neither is created The center offset still creates tolerances that lead to leaks between the connector and the throttle valve.
Alternativ hierzu besteht auch die Möglichkeit, zum Spritzen der Drosselklappe im zweiten Arbeitsgang die Innenkerne zu wechseln.As an alternative to this, there is also the option of changing the inner cores for spraying the throttle valve in the second step.
Gemäß eines weiteren Fertigungsverfahrens wird entweder die Drosselklappe 11 oder der Stutzen 13 in einer Spritzgießmaschine hergestellt und anschließend in einem nachfolgenden Arbeitsgang mit dem Gegenstück umspritzt.According to a further manufacturing process, either the throttle valve 11 or the connecting piece 13 is produced in an injection molding machine and then extrusion-coated with the counterpart in a subsequent operation.
Durch das unmittelbar nacheinander erfolgende Spritzgießen von Stutzen und Drosselklappe wird bewirkt, daß die Kunststoffmasse der Drosselklappe sich dichtend an den Kunststoff des Stutzens anlegt. Da die Kunststoffmasse des Stutzens bereits abgekühlt ist und der Abkühlprozeß der Drosselklappe erst später beginnt und damit auch die Schrumpfung der Drosselklappe später beginnt, entsteht zwischen Stutzen und Drosselklappe ein genau definierter Spalt, der prozeßtechnisch optimiert werden kann.The immediately successive injection molding of the nozzle and throttle valve causes the plastic mass of the throttle valve to seal against the plastic of the nozzle. Since the plastic mass of the nozzle has already cooled and the cooling process of the throttle valve only begins later and the shrinkage of the throttle valve also begins later, a precisely defined gap is created between the nozzle and throttle valve, which can be optimized in terms of process technology.
Die Herstellung im Zwei-Komponenten-Spritzgießverfahren hat den Vorteil, daß ein sehr großer Winkelbereich des Stellwinkels der Drosselklappe als sog. Genauigkeitsbereich ausgestaltet werden kann. Dieser Genauigkeitsbereich alpha ist als Kugelzone ausgebildet und kann entweder als Dichtbereich genutzt werden oder als ein Bereich, der ein progressives Öffnen der Kunststoffdrosselklappe ermöglicht. Damit besteht die Möglichkeit, entweder eine Leeriaufluftregelung bei einer Kunststoffdrosselklappe in Brennkraftmaschinen durchzuführen oder eine Ansteuerungscharakteristik abzubilden, die nahe des Schließbereichs der Drosselklappe bei sehr großen Stellwegen geringe Durchflußänderungen bewirkt und erst ab einem größeren Öffhungswinkel der Durchflußgradient ansteigt.The production in the two-component injection molding process has the advantage that a very large angular range of the adjusting angle of the throttle valve can be designed as a so-called accuracy range. This accuracy range alpha is designed as a spherical zone and can either be used as a sealing area or as an area that allows the plastic throttle valve to open progressively. This makes it possible to either perform an idle air control with a plastic throttle valve in internal combustion engines or to map a control characteristic that causes small flow changes near the closing area of the throttle valve with very long travel ranges and only increases the flow gradient from a larger opening angle.
Figur 2 zeigt einen Ausschnitt aus einem Werkzeug, in welchem das komplette Ventil, d. h. Drosselklappe 11 und Stutzen 13 hergestellt werden.Figure 2 shows a section of a tool in which the complete valve, ie. H. Throttle valve 11 and connector 13 are made.
Das Spritzgießwerkzeug besteht aus zwei Werkzeughälften 16, 17. Zum Herstellen des Stutzens 13 werden jeweils zwei Halbkerne 18, 19, 20, 21 in den Hohlraum bewegt, anschließend die Kavität für den Stutzen 13 mit Kunststoff aufgefüllt. In einem weiteren Arbeitsgang werden die Halbkerne 18 und 21 entfernt und zwei modifizierte Halbkerne 22, 23 eingesetzt. Deren vordere Stirnkante ist gegenüber den Halbkernen 18, 21 zurückversetzt, so daß eine Kavität für die Drosselklappe 11 gebildet wird. Diese Kavität wird mit thermoplastischem Kunststoff gefüllt. Nach dem Erkalten des Kunststoffs werden sämtliche Kerne entfernt. Je nach Gestaltung der Halbkerne 22, 23 kann die Wandstärke der Drosselklappe variiert werden. Außerdem besteht die Möglichkeit, Verrippungen oder ähnliches vorzusehen.The injection mold consists of two mold halves 16, 17. To produce the connector 13, two half cores 18, 19, 20, 21 are moved into the cavity, and then the cavity for the connector 13 is filled with plastic. In a further operation, the half cores 18 and 21 are removed and two modified half cores 22, 23 are used. Its front end edge is set back relative to the half-cores 18, 21, so that a cavity for the throttle valve 11 is formed. This cavity is filled with thermoplastic. After the plastic has cooled, all cores are removed. Depending on the design of the half cores 22, 23, the wall thickness of the Throttle valve can be varied. There is also the possibility of providing ribbing or the like.
Figur 4 zeigt eine Drosselklappe in einer Seitenansicht. Selbstverständlich wird bei dem Zweikomponenten-Spritzgießverfahren die Drosselklappe mit den Drehzapfen in einem Arbeitsgang hergestellt. Zur Vermeidung von Materialanhäufungen in den Drehzapfen können bei der Herstellung zylinderfόrmige Stifte in den Innenbereich eingefahren werden.Nach dem Entfernen dieser Stifte bilden sich die Bohrungen 24, 25 aus. Die Drehzapfen erstrecken sich in einer vorteilhaften Weise nur über einen Teil der Drosselklappe 11. Damit läßt sich die Drosselklappe strömungsgünstig besonders vorteilhaft ausgestalten.Figure 4 shows a throttle valve in a side view. Of course, with the two-component injection molding process, the throttle valve with the pivot pin is produced in one operation. To avoid material accumulation in the pivot pins, cylindrical pins can be inserted into the interior during manufacture. After removing these pins, the bores 24, 25 form. The pivot pins extend in an advantageous manner only over part of the throttle valve 11. This allows the throttle valve to be particularly advantageous in terms of flow.
In die Bohrungen 24, 25 können bei der Endmontage Metallstifte oder ähnliches eingebracht werden. Vor allem ist es möglich, das Stellglied für die Drosselklappe über eine der Bohrungen zu befestigen. So kann beispielsweise ein Metallsteg zur Übertragung von einer Stellbewegung in eine der Bohrungen eingepreßt werden.Metal pins or the like can be introduced into the bores 24, 25 during the final assembly. Above all, it is possible to attach the throttle valve actuator via one of the holes. For example, a metal web can be pressed into one of the bores for transmission of an actuating movement.
In Figur 5 wird ein Ausführungsbeispiel dargestellt, in dem die Justierung der Klappenachse 12 von Klappe 11 im Stutzen 13 mittels Justierschrauben 26 zu sehen ist. FIG. 5 shows an exemplary embodiment in which the adjustment of the valve axis 12 of the valve 11 in the socket 13 by means of adjusting screws 26 can be seen.

Claims

Patentansprüche claims
1. Ventil, umfassend wenigstens ein bewegliches Element und wenigstens ein feststehendes Element, wobei das bewegliche Element Lagerbereiche aufweist, die relativ zum feststehenden Element beweglich sind und das feststehende Element feststehende Lagerbereiche aufweist, wobei das feststehende Element wenigstens einen Schließbereich und wenigstens einen nachfolgenden Genauigkeitsbereich aufweist.1. A valve comprising at least one movable element and at least one fixed element, the movable element having bearing areas that are movable relative to the fixed element and the fixed element has fixed bearing areas, the fixed element having at least one closing area and at least one subsequent accuracy range .
2. Ventil nach Anspruch 1, dadurch gekennzeichnet, daß der Genauigkeitsbereich eine Progressionszone und/oder einen Schließbereich und einen Durchlaßbereich aufweist.2. Valve according to claim 1, characterized in that the accuracy range has a progression zone and / or a closing range and a pass band.
3. Ventil nach einem oder mehreren der vorgenannten Ansprüche, dadurch gekennzeichnet, daß das bewegliche Element eine um die Lagerbereiche drehbare Klappe ist.3. Valve according to one or more of the preceding claims, characterized in that the movable element is a flap rotatable about the bearing areas.
4. Ventil nach einem oder mehreren der vorgenannten Ansprüche, dadurch gekennzeichnet, daß der Genauigkeitsbereich bezüglich der Endschließlage zwischen - 20 Grad und + 20 Grad liegt.4. Valve according to one or more of the preceding claims, characterized in that the accuracy range with respect to the final closed position is between - 20 degrees and + 20 degrees.
5. Ventil nach einem oder mehreren der vorgenannten Ansprüche, dadurch gekennzeichnet, daß der Durchlaßbereich bezüglich der Endschließlage zwischen 5 Grad und 90 Grad liegt.5. Valve according to one or more of the preceding claims, characterized in that the passage range with respect to the final closed position is between 5 degrees and 90 degrees.
6. Ventil nach einem oder mehreren der vorgenannten Ansprüche, dadurch gekennzeichnet, daß der Durchflußbereich so gestaltet ist, daß mit zunehmendem Öffhungswinkel des beweglichen Elements der Spalt zwischen bewegtem und feststehendem Element zunimmt.6. Valve according to one or more of the preceding claims, characterized in that the flow area is designed such that the gap between the moving and fixed element increases with increasing opening angle of the movable element.
7. Ventil nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß das Lagerspiel aufgrund der unterschiedlichen Schrumpfung von Klappenachse und feststehendem Element einstellbar ist.7. Valve according to one of the preceding claims, characterized in that the bearing play is adjustable due to the different shrinkage of the flap axis and the fixed element.
8. Verfahren zur Herstellung eines Ventils nach einem der Ansprüche 1 bis 9 , wobei das Ventil im Zwei-Komponenten Spritzgießverfahren gefertigt wird.8. A method for producing a valve according to one of claims 1 to 9, wherein the valve is manufactured in a two-component injection molding process.
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß in einem ersten Arbeitsgang der Stutzen (13) gefertigt wird, anschließend wenigstens ein Schieber des Spritzgießwerkzeugs geöffnet und die Drosselklappe (11) geschlossen wird. 9. The method according to claim 8, characterized in that the nozzle (13) is manufactured in a first operation, then at least one slide of the injection mold is opened and the throttle valve (11) is closed.
10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß das Spritzgießwerkzeug (2) jeweils geteilte Schieber aufweist, wobei zum Gießen der Drosselklappe zwei Teilschieber entfernt und durch zwei Teils'chieber, die die Kavitäten der Drosselklappe aufweisen, ersetzt werden.10. The method according to claim 9, characterized in that the injection mold (2) each has split slides, with two part slides removed for casting the throttle valve and replaced by two parts ' slider having the cavities of the throttle valve.
11. Verfahren nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß das Spritzgießwerkzeug auf einem Drehteller angeordnet ist und der Austausch der Teilschieber während bzw. vor und nach der Drehbewegung des Werkzeugs erfolgt.11. The method according to claim 9 or 10, characterized in that the injection mold is arranged on a turntable and the exchange of the slide valve takes place during or before and after the rotary movement of the tool.
12. Verfahren nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß Drehzapfen der Drosselklappe beim Gießen derselben hergestellt werden, wobei in den Kavitäten während des Gießvorgangs zylinderfόrmige Stifte zur Erzeugung eines Hohlraums eingebracht werden. 12. The method according to any one of the preceding claims, characterized in that pivots of the throttle valve are produced during the casting thereof, cylindrical pins being introduced to produce a cavity in the cavities during the casting process.
PCT/EP1996/001921 1995-07-17 1996-05-08 Throttle valve WO1997004259A1 (en)

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DE19525937.8 1995-07-17

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DE19936456A1 (en) * 1999-08-03 2001-02-08 Mann & Hummel Filter Valve
GB2323426B (en) * 1997-03-17 2001-07-18 Ford Motor Co Throttle valve for an internal combustion engine
EP1154138A3 (en) * 2000-05-12 2002-04-17 Siemens Aktiengesellschaft Method of making a throttle valve housing and throttle valve housing obtained thereby
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WO2003019053A1 (en) * 2001-08-23 2003-03-06 Siemens Aktiengesellschaft Butterfly valve connection piece for an internal combustion engine
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WO2004005000A1 (en) * 2002-07-02 2004-01-15 Siemens Aktiengesellschaft Method for producing a throttle valve in a continuous throttle body by plastic injection molding
EP1281847A3 (en) * 2001-08-02 2004-03-03 Robert Bosch Gmbh Throttle valve unit with integrated throttle valve
WO2004033180A1 (en) * 2002-10-07 2004-04-22 Siemens Aktiengesellschaft Method for production of a throttle valve in a continuous throttle valve connector
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GB2323426B (en) * 1997-03-17 2001-07-18 Ford Motor Co Throttle valve for an internal combustion engine
FR2783016A1 (en) * 1998-09-09 2000-03-10 Bosch Gmbh Robert CHOKE SLEEVE FOR CONTROLLING THE POWER OF AN INTERNAL COMBUSTION ENGINE AND METHOD FOR ADJUSTING AN AIR LEAK
DE19936456A1 (en) * 1999-08-03 2001-02-08 Mann & Hummel Filter Valve
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EP1186762A3 (en) * 2000-09-09 2003-03-12 Gustav Wahler GmbH u. Co.KG Control device with a control valve for controlling a medium
EP1262646A2 (en) * 2001-05-31 2002-12-04 Aisan Kogyo Kabushiki Kaisha Valve apparatus
EP1262646A3 (en) * 2001-05-31 2004-04-14 Aisan Kogyo Kabushiki Kaisha Valve apparatus
EP1281847A3 (en) * 2001-08-02 2004-03-03 Robert Bosch Gmbh Throttle valve unit with integrated throttle valve
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WO2003018229A3 (en) * 2001-08-23 2003-05-30 Siemens Ag Method for producing a housing or an insert for a housing of a butterfly valve connection piece and butterfly valve connection piece
WO2003019053A1 (en) * 2001-08-23 2003-03-06 Siemens Aktiengesellschaft Butterfly valve connection piece for an internal combustion engine
US6840260B2 (en) 2001-08-23 2005-01-11 Siemens Ag Method of manufacturing a throttle valve connection piece and a housing therefor
WO2003018229A2 (en) * 2001-08-23 2003-03-06 Siemens Aktiengesellschaft Method for producing a housing or an insert for a housing of a butterfly valve connection piece and butterfly valve connection piece
WO2004005000A1 (en) * 2002-07-02 2004-01-15 Siemens Aktiengesellschaft Method for producing a throttle valve in a continuous throttle body by plastic injection molding
WO2004033180A1 (en) * 2002-10-07 2004-04-22 Siemens Aktiengesellschaft Method for production of a throttle valve in a continuous throttle valve connector
US7418781B2 (en) 2002-10-07 2008-09-02 Siemens Aktiengesellschaft Method for production of a throttle valve in a continuous throttle valve connector
DE202008016216U1 (en) 2008-12-09 2010-04-29 Apel, Helga E-gas throttle
DE202009000835U1 (en) 2009-01-22 2010-07-08 Walter Söhner GmbH & Co. KG E-Gas plates
JP2012524228A (en) * 2009-04-20 2012-10-11 インターナショナル エンジン インテレクチュアル プロパティー カンパニー リミテッド ライアビリティ カンパニー Valve with offset bore

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