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EP0133445A2 - Valve arrangement - Google Patents

Valve arrangement Download PDF

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Publication number
EP0133445A2
EP0133445A2 EP19840103882 EP84103882A EP0133445A2 EP 0133445 A2 EP0133445 A2 EP 0133445A2 EP 19840103882 EP19840103882 EP 19840103882 EP 84103882 A EP84103882 A EP 84103882A EP 0133445 A2 EP0133445 A2 EP 0133445A2
Authority
EP
European Patent Office
Prior art keywords
closing member
chamber
valve arrangement
arrangement according
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.)
Granted
Application number
EP19840103882
Other languages
German (de)
French (fr)
Other versions
EP0133445B1 (en
EP0133445A3 (en
Inventor
Stephan Wietschorke
Gerhard Ruschek
Andreas Sausner
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO 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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0133445A2 publication Critical patent/EP0133445A2/en
Publication of EP0133445A3 publication Critical patent/EP0133445A3/en
Application granted granted Critical
Publication of EP0133445B1 publication Critical patent/EP0133445B1/en
Expired legal-status Critical Current

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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
    • F02M3/00—Idling devices for carburettors
    • F02M3/06—Increasing idling speed
    • F02M3/07—Increasing idling speed by positioning the throttle flap stop, or by changing the fuel flow cross-sectional area, by electrical, electromechanical or electropneumatic means, according to engine speed
    • F02M3/075—Increasing idling speed by positioning the throttle flap stop, or by changing the fuel flow cross-sectional area, by electrical, electromechanical or electropneumatic means, according to engine speed the valve altering the fuel conduit cross-section being a slidable 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
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining
    • Y10T137/87523—Rotary valve
    • Y10T137/87531—Butterfly 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
    • Y10T137/8593—Systems
    • Y10T137/87265—Dividing into parallel flow paths with recombining
    • Y10T137/87539—Having guide or restrictor

Definitions

  • the invention relates to a valve arrangement for regulating the idle speed of internal combustion engines by controlling the amount of air on the intake side of an intake line leading to the internal combustion engine, with an electromechanical actuator which has a solenoid by means of which a closing element can be moved in the opening direction against the force of a return spring via an adjusting element , wherein the closing member is acted upon in the opening direction by the pressure of the inlet side and the inlet side is connected to a chamber which has a movable wall which can be connected to the rear side of the closing member.
  • Such valve arrangements serve to keep the idling speed of the engine as low as possible, but at the same time to regulate it in such a way that with additional loads, such as idle speed does not decrease with auxiliary units until the engine stalls.
  • a linear current is applied to the solenoid, which among other things. is formed as a function of the actual speed and which causes such an adjustment of the closing element that the actual speed reaches a predetermined target speed largely independently of disturbance variables.
  • the actuator When the solenoid is de-energized, the actuator, and with it the closing element, is moved by the return spring either to the fully open or to the fully closed position. This is the case if no current is applied to the solenoid outside of the driving mode. This can also occur due to a defect in which the power supply to the solenoid is interrupted.
  • the object of the invention is therefore to provide a valve arrangement according to the preamble, which ensures the lowest possible idling speed with a simple structure in the event of failure of the lifting magnet, but always sufficiently high against the engine stopping.
  • the chamber can be connected to the suction side via a valve which can be closed during a control process.
  • a pressure equalization takes place in the chamber in accordance with the pressure on the inlet side during a control process, so that the degree of opening of the closing member is determined only by the actuating current of the lifting magnet and the spring force of the return spring counteracting it.
  • the chamber is connected to the suction side having a lower pressure than the inlet side. This leads to a cancellation of the pressure compensation on the closing element in the sense that the higher pressure on the inlet side counteracts the closing element against the force the return spring is moved so far in the opening direction until the forces acting on the closing member are balanced.
  • the cross section of this open position is so large that a sufficiently high idling speed is ensured that the engine will not die.
  • the valve is preferably a solenoid valve, it being particularly favorable if the solenoid valve can be energized by the actuating current of the lifting magnet. This automatically closes the solenoid valve when the solenoid is energized during a control process.
  • actuating element is a lifting rod connected to the movable core of the lifting magnet.
  • the inlet-side and chamber-side active surfaces: of the closing member are advantageously approximately the same size.
  • the movable wall can be formed by the closing member.
  • the movable wall is a membrane arranged between the closing member and the wall of the chamber.
  • Difficult to manufacture in the valve assembly housing Channels can be omitted if the connection of the inlet side to the chamber consists of a channel formed axially in the closing member.
  • a throttle valve 2 is rotatably arranged in an intake line 1 leading to an internal combustion engine (not shown).
  • the area in front of throttle valve 2 can be connected to the area behind throttle valve 2 via a bypass 3.
  • the passage of the by-pass 3 can be more or less blocked by a valve arrangement in that a closing member 4 can be moved towards a valve seat 5.
  • the closing member 4 is axially displaceable between a rest position and a working position and is connected to the lifting rod 6 which carries a core 9 of a lifting magnet 7 and which is loaded in the closing direction by a return spring 8. When energized, the lifting rod 6 is moved more or less against the force of the return spring 8 in the opening direction.
  • a chamber 10 On the side of the closing member 4 facing away from the valve seat 5, a chamber 10 is arranged, the wall of which facing the valve seat 5 is a movable wall designed as a membrane 11. This membrane 11 is connected with its central region to the closing member 4, so that the pressure prevailing in the chamber 10 also acts on the closing member 4.
  • the active side of the closing element 4 on the inlet side and the active surface of the membrane 11 are approximately the same size.
  • the inlet side of the closing element 4 is connected to the chamber 10 via channels 12 formed in the closing element 4.
  • the mouths of the channels 12 on the inlet side are protected by a mushroom-like cover 13 against direct axial inflow of air into the channels 12. As a result, these openings of the channels 12 are only radial. ' Direction open.
  • the chamber 10 is connected via a connection 14 to the suction side of the suction line 1, which connection 14 can be shut off by a solenoid valve 15.
  • the solenoid valve 15 is open when de-energized the actuating current for energizing the solenoid 7 is energized such that the solenoid valve 15 is basically closed when the solenoid 7 is energized.
  • the cross sections of the channels 12 are in such a size ratio to the cross section of the connection 14 that the force counteracting the inlet pressure causes the closing member 4 to open with a defined air flow rate.
  • the degree of opening thus changes in accordance with the respective inlet pressure.
  • the air flow remains constant.
  • the solenoid 7 When idling, the solenoid 7 is acted upon by a control current generated by a controller, so that the core 9 and with it the lifting rod 6 and the closing member 4 are moved away from the valve seat 5 counter to the force of the return spring 8.
  • the solenoid valve 15 Since the solenoid valve 15 is also energized and closes when the solenoid 7 is energized, the magnetic force of the solenoid 7 is also counteracted by the pressure building up in the chamber 10. This pressure corresponds to the inlet-side pressure on the closing member 4, .so that the closing member 4 can be moved independently of pressurization by the equally large opposite active surfaces of the closing member 4 and membrane 11.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

Die Erfindung betrifft eine Venti lanordnung zur Regelung der Leerlaufdrehzahl von Verbrennungsmotoren durch Steuerung der Luftmenge auf der Ansaugseite einer zum Verbrennungs-motor führenden Ansaugleitung 1. Sie besitzt ein elektromagnetisches Stellglied, das einen Hubmagneten 7 aufweist, durch den ein Schiießgiied 4 über eine Stellelement entgegen der Kraft einer Rücksteilfeder 8 bewegbar ist. Das Schließglied 4 ist in Öffnungsrichtung vom Druck der Einlaßseite beaufschlagt und die Einlaßseite mit einer Kammer 10 verbunden, die eine mit der Rückseite des Schließglieds 4 verbindbare bewegliche Wand aufweist. Die Kammer 10 ist über ein Ventil mit der Ansaugseite verbindbar, das während eines Regelvorgangs schließbar ist.The invention relates to a Venti lanordnung for controlling the idle speed of internal combustion engines by controlling the amount of air on the intake side of an intake line leading to the internal combustion engine Force of a return spring 8 is movable. The closing member 4 is acted upon in the opening direction by the pressure of the inlet side and the inlet side is connected to a chamber 10 which has a movable wall which can be connected to the rear side of the closing member 4. The chamber 10 can be connected to the suction side via a valve, which can be closed during a control process.

Description

Die Erfindung betrifft eine Ventilanordnung zur Regelung der Leerlaufdrehzahl von Verbrennungsmotoren durch Steuerung der Luftmenge auf der Ansaugseite einer zum Verbrennungsmotor führenden Ansaugleitung, mit einem elektromechanischen Stellglied, das einen Hubmagneten aufweist, durch den ein Schließglied über ein Stellelement entgegen der Kraft einer Rückstellfeder in öffnungsrichtung bewegbar ist, wobei das Schließglied in Öffnungsrichtung vom Druck der Einlaßseite beaufschlagt ist und die Einlaßseite mit einer Kammer verbunden ist, die eine mit der Rückseite des Schließglieds verbindbare bewegliche Wand aufweist.The invention relates to a valve arrangement for regulating the idle speed of internal combustion engines by controlling the amount of air on the intake side of an intake line leading to the internal combustion engine, with an electromechanical actuator which has a solenoid by means of which a closing element can be moved in the opening direction against the force of a return spring via an adjusting element , wherein the closing member is acted upon in the opening direction by the pressure of the inlet side and the inlet side is connected to a chamber which has a movable wall which can be connected to the rear side of the closing member.

Derartige Ventilanordnungen dienen dazu, die Leerlaufdrehzahl des Motors möglichst niedrig zu halten, gleichzeitig aber so zu regeln, daß bei zusätzlichen Belastungen, wie z.B. durch Hilfsaggregate die Leerlaufdrehzahl.nicht bis zum Absterben des Motors sinkt. Dazu wird der Hubmagnet mit einem Stellstrom beaufschlagt, der u.a. in Abhängigkeit von der Istdrehzahl gebildet wird und der eine solche Verstellung des Schließglieds bewirkt, daß die Istdrehzahl eine vorgegebene Solldrehzahl weitgehend unabhängig von Störgrößen erreicht.Such valve arrangements serve to keep the idling speed of the engine as low as possible, but at the same time to regulate it in such a way that with additional loads, such as idle speed does not decrease with auxiliary units until the engine stalls. For this purpose, a linear current is applied to the solenoid, which among other things. is formed as a function of the actual speed and which causes such an adjustment of the closing element that the actual speed reaches a predetermined target speed largely independently of disturbance variables.

Bei stromlosem Hubmagnet wird das Stellglied und mit ihm das Schließglied durch die Rückstellfeder entweder in die völlig offene oder in die völlig geschlossene Stellung bewegt. Dies ist der Fall, wenn außerhalb des Fahrbetriebs keine Strombeaufschlagung des Hubmagneten erfolgt. Dies kann aber auch durch einen Defekt eintreten, bei dem die Stromversorgung des Hubmagneten unterbrochen wird.When the solenoid is de-energized, the actuator, and with it the closing element, is moved by the return spring either to the fully open or to the fully closed position. This is the case if no current is applied to the solenoid outside of the driving mode. This can also occur due to a defect in which the power supply to the solenoid is interrupted.

Bei den herkömmlichen Ventilanordnungen führt dies dazu, daß der Motor entweder mit einer maximalen Leerlaufdrehzahl oder aber mit einer minimalen Leerlaufdrehzahl mit der Gefahr des Absterbens läuft.In the conventional valve arrangements, this leads to the engine running either at a maximum idling speed or at a minimum idling speed with the risk of stalling.

Aufgabe der Erfindung ist es daher, eine.Ventilanordnung nach dem Oberbegriff zu schaffen, die mit einfachem Aufbau bei Ausfall des Hubmagneten eine möglichst niedrige, aber gegen ein Absterben des Motors immer ausreichend hohe Leerlaufdrehzahl sicherstellt.The object of the invention is therefore to provide a valve arrangement according to the preamble, which ensures the lowest possible idling speed with a simple structure in the event of failure of the lifting magnet, but always sufficiently high against the engine stopping.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Kammer über ein Ventil mit der Ansaugseite verbindbar ist, das während eines Regelvorgangs schließbar ist. Durch diese Ausgestaltung erfolgt während eines Regelvorganges ein Druckausgleich in der Kammer entsprechend dem Druck auf der Einlaßseite, so daß das Maß der öffnung des Schließglieds nur durch den Ansteuerstrom des Hubmagneten und die ihm entgegenwirkende Federkraft der Rückstellfeder bestimmt ist. Erfolgt kein Regelvorgang, so ist die Kammer mit der einen niedrigeren Druck als die Einlaßseite aufweisenden Ansaugseite verbunden. Dies führt zu einer Aufhebung des Druckausgleichs am Schließglied in dem Sinn, daß der höhere Druck der Einlaßseite das Schließglied entgegen der Kraft der Rückstellfeder so weit in öffnungsrichtung bewegt, bis die an dem Schließglied angreifenden Kräfte.im Gleichgewicht sind. Der Querschnitt dieser öffnungsstellung ist so groß, daß eine derart ausreichend hohe Leerlaufdrehzahl sichergestellt ist, daß ein Absterben des Motors vermieden wird.This object is achieved in that the chamber can be connected to the suction side via a valve which can be closed during a control process. By means of this configuration, a pressure equalization takes place in the chamber in accordance with the pressure on the inlet side during a control process, so that the degree of opening of the closing member is determined only by the actuating current of the lifting magnet and the spring force of the return spring counteracting it. If there is no control process, the chamber is connected to the suction side having a lower pressure than the inlet side. This leads to a cancellation of the pressure compensation on the closing element in the sense that the higher pressure on the inlet side counteracts the closing element against the force the return spring is moved so far in the opening direction until the forces acting on the closing member are balanced. The cross section of this open position is so large that a sufficiently high idling speed is ensured that the engine will not die.

Dabei ist es unerheblich aus welchem Grund kein Regelvorgang erfolgt. Dies kann z.B. durch Abschalten des Ansteuerstromes aber auch durch einen Defekt des Steuerkreises für den Ansteuerstrom erfolgen.It is irrelevant why there is no control process. This can e.g. by switching off the control current but also by a defect in the control circuit for the control current.

Vorzugsweise ist das Ventil ein Magnetventil, wobei es besonders günstig ist, wenn das Magnetventil vom Stellstrom des Hubmagneten bestrombarist. Dadurch.wird automatisch mit der Bestromung des Hubmagneten während eines Regelvorganges auch das Magnetventil geschlossen.The valve is preferably a solenoid valve, it being particularly favorable if the solenoid valve can be energized by the actuating current of the lifting magnet. This automatically closes the solenoid valve when the solenoid is energized during a control process.

Eine einfache Ausbildung wird erreichte wenn das Stellelement eine mit dem bewegbaren Kern des Hubmagneten verbundene Hubstange ist.A simple design is achieved when the actuating element is a lifting rod connected to the movable core of the lifting magnet.

Zum einfachen Erreichen eines Druckausgleichs sind vorteilhafterweise die einlaßseitige und die kammerseitige Wirkfläche:des Schließglieds etwa gleich groß.To achieve pressure equalization in a simple manner, the inlet-side and chamber-side active surfaces: of the closing member are advantageously approximately the same size.

Die bewegliche Wand kann vom Schließglied gebildet sein.The movable wall can be formed by the closing member.

Eine andere Ausbildung besteht darin, daß die bewegliche Wand eine zwischen dem Schließglied und der Wand der Kammer angeordnete.Membran ist.Another embodiment is that the movable wall is a membrane arranged between the closing member and the wall of the chamber.

Auf im Gehäuse der Ventilanordnung schwierig herstellbare Kanäle kann verzichtet werden, wenn die Verbindung der Einlaßseite mit der Kammer aus einem axial im Schließglied ausgebildeten Kanal besteht.Difficult to manufacture in the valve assembly housing Channels can be omitted if the connection of the inlet side to the chamber consists of a channel formed axially in the closing member.

Dabei werden durch die Luftströmung hervorgerufene Verfälschungen der Druckverhältnisse auf beiden Seiten des Schließglieds vermieden, wenn die einlaßseitige Mündung des Kanals radial gerichtet ist.Falsifications of the pressure conditions on both sides of the closing element caused by the air flow are avoided if the inlet-side mouth of the channel is directed radially.

Besitzen die Querschnitte der Verbindung der Einlaßseite mit der Kammer und der Verbindung der Kammer mit der Ansaugseite.eine solche aufeinander bezogene Größe, daß die dem Einlaßdruck entgegenwirkende Kraft eine öffnung des Schließgliedes mit einem definierten Luftdurchsatz durch die Venti lanordnung bewirkt, so kann ein dynamisches Gleichgewicht an dem Schließglied erreicht werden.If the cross-sections of the connection of the inlet side to the chamber and the connection of the chamber to the suction side have such a related size that the force counteracting the inlet pressure causes the closing member to open with a defined air flow rate through the valve arrangement, then a dynamic balance can be achieved can be reached on the locking member.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Die einzige Figur der Zeichnung zeigt eine erfindungsgemäße Ventilanordnung im Querschnitt.An embodiment of the invention is shown in the drawing and will be described in more detail below. The single figure of the drawing shows a valve arrangement according to the invention in cross section.

In einer zu einem nicht dargestellten Verbrennungsmotor führenden Ansaugleitung 1 ist eine Drosselklappe 2 drehbar angeordnet. über einen By-pass 3 ist der Bereich vor der Drosselklappe.2 mit dem.Bereich hinter der Drosselklappe 2 verbindbar.A throttle valve 2 is rotatably arranged in an intake line 1 leading to an internal combustion engine (not shown). The area in front of throttle valve 2 can be connected to the area behind throttle valve 2 via a bypass 3.

Der Durchgang des By-passes 3 ist durch eine Ventilanordnung mehr oder weniger dadurch absperrbar, daß ein Schließglied 4 auf einen Ventilsitz 5 zu bewegbar ist.The passage of the by-pass 3 can be more or less blocked by a valve arrangement in that a closing member 4 can be moved towards a valve seat 5.

Beim Aufsitzen des Schließgliedes 4.kann keine Luft über den By-pass 3 direkt von der Atmosphärenseite zur Ansaugseite der Ansaugleitung 1 strömen.When the closing element 4 is seated, no air can escape Flow the by-pass 3 directly from the atmosphere side to the suction side of the suction line 1.

Das Schließglied 4 ist zwischen einer Ruhestellung und einer Arbeitsstellung axial verschiebbar und mit der einen Kern 9 eines Hubmagneten 7 tragenden Hubstange 6 verbunden, die durch eine Rückstellfeder 8 in Schließrichtung belastet ist. Bei Bestromung wird die Hubstange 6 mehr oder weniger entgegen der Kraft der Rückstellfeder 8 in öffnungsrichtung bewegt.The closing member 4 is axially displaceable between a rest position and a working position and is connected to the lifting rod 6 which carries a core 9 of a lifting magnet 7 and which is loaded in the closing direction by a return spring 8. When energized, the lifting rod 6 is moved more or less against the force of the return spring 8 in the opening direction.

Auf der dem Ventilsitz 5 abgewandten Seite des Schließgliedes 4 ist eine Kammer 10 angeordnet, deren dem Ventilsitz 5 zugewandte Wand eine als Membran 11 ausgebildete bewegliche Wand ist. Diese Membran 11 ist mit ihrem zentrischen Bereich mit dem Schließglied 4 verbunden, so daß der in der Kammer 10 herrschende Druck auch auf das Schließglied 4 wirkt. Die einlaßseitige Wirkfläche des Schließgliedes 4 und die Wirkfläche der Membran 11 sind dabei etwa gleichgroß.On the side of the closing member 4 facing away from the valve seat 5, a chamber 10 is arranged, the wall of which facing the valve seat 5 is a movable wall designed as a membrane 11. This membrane 11 is connected with its central region to the closing member 4, so that the pressure prevailing in the chamber 10 also acts on the closing member 4. The active side of the closing element 4 on the inlet side and the active surface of the membrane 11 are approximately the same size.

über im Schließglied 4 ausgebildete Kanäle 12 ist die Einlaßseite des Schließgliedes 4 mit der Kammer.10 verbunden. Dabei sind die einlaßseitigen Mündungen der Kanäle 12 durch eine pilzartige Abdeckung 13 gegen direktes axiales Einströmen von Luft in die Kanäle 12 geschützt. Dadurch sind diese Mündungen der Kanäle 12 nur nach radialer.'Richtung offen.The inlet side of the closing element 4 is connected to the chamber 10 via channels 12 formed in the closing element 4. The mouths of the channels 12 on the inlet side are protected by a mushroom-like cover 13 against direct axial inflow of air into the channels 12. As a result, these openings of the channels 12 are only radial. ' Direction open.

Die Kammer 10 ist über eine Verbindung 14 mit der Ansaugseite der Ansaugleitung 1 verbunden, wobei diese Verbindung 14 durch ein Magnetventil 15 absperrbar ist.The chamber 10 is connected via a connection 14 to the suction side of the suction line 1, which connection 14 can be shut off by a solenoid valve 15.

Das in unbestromten Zustand offene Magnetventil.15 ist durch den Stellstrom zur Bestromung des Hubmagneten 7 derart bestromt, daß grundsätzlich bei Bestromung des Hubmagneten 7 das Magnetventil 15 geschlossen ist.The solenoid valve 15 is open when de-energized the actuating current for energizing the solenoid 7 is energized such that the solenoid valve 15 is basically closed when the solenoid 7 is energized.

Die Querschnitte der Kanäle 12 stehen in einem solchen Größenverhältnis zum Querschnitt der Verbindung 14, daß die dem Einlaßdruck entgegenwirkende Kraft eine öffnung des Schließgliedes 4 mit einem fest definierten Luftdurchsatz bewirkt. Entsprechend dem jeweiligen Einlaßdruck ändert sich somit zwar der öffnungsgrad. Der Luftdurchsatz bleibt aber konstant.The cross sections of the channels 12 are in such a size ratio to the cross section of the connection 14 that the force counteracting the inlet pressure causes the closing member 4 to open with a defined air flow rate. The degree of opening thus changes in accordance with the respective inlet pressure. The air flow remains constant.

Bei Leerlaufbetrieb wird der Hubmagnet 7 mit einem von einem Regler erzeugten Stellstrom beaufschlagt, so daß der Kern 9 und mit ihm die Hubstange 6 und das Schließglied 4 entgegen der kraft.der Rückstellfeder 8 vom Ventilsitz 5 wegbewegt werden.When idling, the solenoid 7 is acted upon by a control current generated by a controller, so that the core 9 and with it the lifting rod 6 and the closing member 4 are moved away from the valve seat 5 counter to the force of the return spring 8.

Da gleichzeitig mit der Bestromung des Hubmagneten 7 auch das Magnetventil 15 bestromt wird und schließt, wirkt der Magnetkraft des Hubmagneten 7 auch der in der Kammer 10 sich aufbauende Druck entgegen. Dieser Druck entspricht dem einlaßseitigen Druck am Schließglied 4,.so daß durch die gleichgroßen entgegengesetzten Wirkflächen von Schließglied 4 und Membrane 11 das Schließglied 4 von Druckbeaufschlagungen unabhängig bewegbar ist.Since the solenoid valve 15 is also energized and closes when the solenoid 7 is energized, the magnetic force of the solenoid 7 is also counteracted by the pressure building up in the chamber 10. This pressure corresponds to the inlet-side pressure on the closing member 4, .so that the closing member 4 can be moved independently of pressurization by the equally large opposite active surfaces of the closing member 4 and membrane 11.

Claims (10)

1. Ventilanordnung zur Regelung der Leerlaufdrehzahl von Verbrennungsmotoren durch Steuerung der Luftmenge auf der Ansaugseite einer zum Verbrennungsmotor führenden Ansaugleitung, mit einem elektromechanischen Stellglied, das einen Hubmagneten aufweist, durch den ein Schließglied über ein Stellelement entgegen der Kraft einer Rückstellfeder in öffnungsrichtung bewegbar ist, wobei das Schließglied in öffnungsrichtung vom Druck der Einlaßseite beaufschlagt ist,und die Einlaßseite mit einer Kammer verbunden ist, die eine mit der Rückseite des Schließglieds verbindbare bewegliche Wand aufweist, dadurch gekennzeichnet, daß die Kammer (10) über ein Ventil mit der Ansaugseite verbindbar ist, das während eines Regelvorgangs schließbar ist.1.Valve arrangement for regulating the idling speed of internal combustion engines by controlling the amount of air on the intake side of an intake line leading to the internal combustion engine, with an electromechanical actuator which has a solenoid by means of which a closing element can be moved in the opening direction counter to the force of a return spring, against the force of a return spring, wherein the closing member is acted upon in the opening direction by the pressure of the inlet side, and the inlet side is connected to a chamber which has a movable wall which can be connected to the rear side of the closing member, characterized in that the chamber (10) can be connected to the suction side via a valve, that can be closed during a control process. 2. Ventilanordnung nach Anspruch 1, dadurch gekennzeichnet, daß das Ventil ein Magnetventil (15) ist.2. Valve arrangement according to claim 1, characterized in that the valve is a solenoid valve (15). 3. Ventilanordnung nach Anspruch 2, dadurch gekennzeichnet, daß das Magnetventil (15) vom Stellstrom des Hubmagneten (7) bestrombar ist.3. Valve arrangement according to claim 2, characterized in that the solenoid valve (15) from the actuating current of the solenoid (7) can be energized. 4. Ventilanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Stellelement eine mit dem bewegbaren Kern (9) des Hubmagneten (7) verbundene Hubstange (6) ist.4. Valve arrangement according to one of the preceding claims, characterized in that the adjusting element is a lifting rod (6) connected to the movable core (9) of the lifting magnet (7). 5. Ventilanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die einlaßseitige und die kammerseitige Wirkfläche des Schließglieds etwa gleichgroß ist.5. Valve arrangement according to one of the preceding claims, characterized in that the inlet-side and the chamber-side active surface of the closing member is approximately the same size. 6. Ventilanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die bewegliche Wand vom Schließglied gebildet ist.6. Valve arrangement according to one of the preceding claims, characterized in that the movable wall is formed by the closing member. 7. Ventilanordnung nach einem der Ansprüche 1 bis 5, dadurch.gekennzeichnet, daß die bewegliche Wand eine zwischen dem Schließglied und der Wand.der.Kammer (10) angeordnete Membran (11) ist.7. Valve arrangement according to one of claims 1 to 5, characterized in that the movable wall is a membrane (11) arranged between the closing member and the wall. The chamber (10). 8. Ventilanordnung nach einem der vorhergehenden Ansprüche, dadurch.gekennzeichnet, daß die Verbindung der Einlaßseite mit der Kammer (10) aus einem axial im Schließglied (4) ausgebildeten Kanal (12) besteht.8. Valve arrangement according to one of the preceding claims, characterized. Characterized in that the connection of the inlet side to the chamber (10) consists of an axially formed in the closing member (4) channel (12). 9. Ventilanordnung nach Anspruch 8, dadurch gekennzeichnet, daß die einlaßseitige Mündung des Kanals (12) radial gerichtet ist.9. Valve arrangement according to claim 8, characterized in that the inlet-side mouth of the channel (12) is directed radially. 10. Ventilanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Querschnitte der Verbindung der Einlaßseite mit der Kammer (10) und der Verbindung (14) der Kammer (10) mit der Ansaugseite eine solche aufeinander bezogene Größe besitzen, daß die dem Einlaßdruck entgegenwirkende Kraft eine öffnung des Schließglieds (4) mit einem definierten Luftdurchsatz durch die Ventialanordnung bewirkt.10. Valve arrangement according to one of the preceding claims, characterized in that the cross sections of the connection of the inlet side with the chamber (10) and the connection (14) of the chamber (10) with the suction side have such a related size that the inlet pressure counteracting force causes an opening of the closing member (4) with a defined air flow through the Ventialanordnung.
EP19840103882 1983-08-11 1984-04-07 Valve arrangement Expired EP0133445B1 (en)

Applications Claiming Priority (2)

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DE19833328950 DE3328950A1 (en) 1983-08-11 1983-08-11 VALVE ARRANGEMENT
DE3328950 1983-08-11

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EP0133445A2 true EP0133445A2 (en) 1985-02-27
EP0133445A3 EP0133445A3 (en) 1985-09-18
EP0133445B1 EP0133445B1 (en) 1987-10-14

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EP (1) EP0133445B1 (en)
DE (2) DE3328950A1 (en)

Cited By (3)

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EP0229315A2 (en) * 1985-12-10 1987-07-22 Hitachi, Ltd. Automotive engine idle speed control device
EP0361846A2 (en) * 1988-09-26 1990-04-04 Hitachi, Ltd. An idling engine speed control valve and a method of improving charateristics thereof
US7778088B2 (en) 2006-12-19 2010-08-17 Spansion Llc Erasing flash memory using adaptive drain and/or gate bias

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US4873954A (en) * 1988-07-27 1989-10-17 Colt Industries Inc. Fail-safe idle bypass system
US4873955A (en) * 1988-09-19 1989-10-17 Colt Industries Inc. Idle air flow shutoff valve
JPH0389959U (en) * 1989-12-29 1991-09-12
US5042448A (en) * 1990-01-10 1991-08-27 Siemens Automotive Limited Idle air bypass
US7967509B2 (en) 2007-06-15 2011-06-28 S.C. Johnson & Son, Inc. Pouch with a valve

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US4355606A (en) * 1978-10-02 1982-10-26 The Bendix Corporation Idle speed control valve
GB2066930A (en) * 1979-12-12 1981-07-15 Vdo Schindling Apparatus for controlling the idling speed of an internal combustion engine
US4366835A (en) * 1980-02-29 1983-01-04 Aisin Seiki Kabushiki Kaisha Electromagnetic flow control valve
DE3028898A1 (en) * 1980-07-30 1982-03-04 Robert Bosch Gmbh, 7000 Stuttgart DEVICE FOR CONTROLLING THE IDLE SPEED OF AN INTERNAL COMBUSTION ENGINE
GB2096239A (en) * 1981-04-07 1982-10-13 Bosch Gmbh Robert Regulation of i c engine idling speed by throttle bypass valve control
FR2510191A1 (en) * 1981-07-25 1983-01-28 Bosch Pierburg System Ohg INSTALLATION FOR ADJUSTING THE ROTATION SPEED OF AN INTERNAL COMBUSTION ENGINE AT IDLE

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0229315A2 (en) * 1985-12-10 1987-07-22 Hitachi, Ltd. Automotive engine idle speed control device
EP0229315A3 (en) * 1985-12-10 1988-10-05 Hitachi, Ltd. Automotive engine idle speed control device
US4823750A (en) * 1985-12-10 1989-04-25 Hitachi, Ltd. Automotive engine idle speed control device
EP0361846A2 (en) * 1988-09-26 1990-04-04 Hitachi, Ltd. An idling engine speed control valve and a method of improving charateristics thereof
EP0361846A3 (en) * 1988-09-26 1990-06-13 Hitachi, Ltd. An idling engine speed control valve and a method of improving charateristics thereof
US7778088B2 (en) 2006-12-19 2010-08-17 Spansion Llc Erasing flash memory using adaptive drain and/or gate bias

Also Published As

Publication number Publication date
DE3466793D1 (en) 1987-11-19
EP0133445B1 (en) 1987-10-14
US4573441A (en) 1986-03-04
EP0133445A3 (en) 1985-09-18
DE3328950A1 (en) 1985-02-28

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