EP0714478B1 - Throttle valve device - Google Patents

Throttle valve device Download PDF

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Publication number
EP0714478B1
EP0714478B1 EP95923335A EP95923335A EP0714478B1 EP 0714478 B1 EP0714478 B1 EP 0714478B1 EP 95923335 A EP95923335 A EP 95923335A EP 95923335 A EP95923335 A EP 95923335A EP 0714478 B1 EP0714478 B1 EP 0714478B1
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EP
European Patent Office
Prior art keywords
unit
throttle valve
air
valve
housing 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.)
Expired - Lifetime
Application number
EP95923335A
Other languages
German (de)
French (fr)
Other versions
EP0714478A1 (en
Inventor
Peter Apel
Klaus Wilczek
Dirk WÜSTENBECKER
Georg Habel
Ottmar Paseos de los Jardines 74 KAPPES
Sergio H. R. Calz. del Hueso 713 CRUZ
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.)
AB Elektronik GmbH
Original Assignee
AB Elektronik 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
Priority claimed from DE9409891U external-priority patent/DE9409891U1/en
Application filed by AB Elektronik GmbH filed Critical AB Elektronik GmbH
Publication of EP0714478A1 publication Critical patent/EP0714478A1/en
Application granted granted Critical
Publication of EP0714478B1 publication Critical patent/EP0714478B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F02D11/107—Safety-related aspects
    • 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
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • 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
    • 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
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0269—Throttle closing springs; Acting of throttle closing springs on the throttle shaft
    • 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
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0277—Fail-safe mechanisms, e.g. with limp-home feature, to close throttle if actuator fails, or if control cable sticks or breaks

Definitions

  • the throttle valve adjusted with a servomotor. That kind of Throttle valve adjustment is under the technical term Drive-by-wire known.
  • the servomotor is with a Throttle valve shaft connected, which rotates in the housing is stored.
  • valve unit which in itself is the Task is to release fuel vapors emitted by the tank, is targeted for further use.
  • the valve unit By a targeted control of the valve unit assumes this Failure of the actuator unit the task, the air flow cavity to provide so much air that a sufficient, ignitable mixture is available that enables the driver to specifically target his vehicle from the To move the danger zone or to another location.
  • control unit in the housing cover element or is arranged in the housing element ensures that the corresponding control signals can be transferred immediately.
  • the valve unit can be operated electromagnetically Valve, which is a substantially annular solenoid includes a back and forth in the axial direction movable magnetic armature made of metallic material encloses, the magnet armature on the the valve seat facing end face with a sealing body made of elastomer Material is closed and the magnet armature and the Sealing bodies are positively connected to one another.
  • electromagnetically Valve which is a substantially annular solenoid includes a back and forth in the axial direction movable magnetic armature made of metallic material encloses, the magnet armature on the the valve seat facing end face with a sealing body made of elastomer Material is closed and the magnet armature and the Sealing bodies are positively connected to one another.
  • 1 and 2 is part of a drive-by-wire system shown.
  • the rotating unit 93.2 is connected to the throttle valve shaft element, while the stationary unit in the throttle body element 98 is held.
  • the throttle body member 98 furthermore, as shown in FIG. 2, encloses a valve unit 95.
  • the valve unit 95 has a connecting piece 95.1 for a rubber hose. It is through one Force vapor recess 102 with the interior of the gas mixture cavity 103 connected.
  • the valve unit 95 has itself the task, especially that of the tank or activated carbon filter the gasoline vapors corresponding to the tank ventilation Taxes.
  • an electromagnetically actuated valve comprising a ring-shaped Magnetic coil, one in the axial direction of the magnetic coil back and forth movable magnetic armature made of metallic Material encloses, the magnetic armature on the End face facing the valve seat with a sealing body elastomeric material is provided.
  • the magnet armature and the Sealing bodies are positively connected to one another.
  • valve unit 95 Opposite the valve unit 95 is a central plug unit 96 arranged. There is a duct in the housing element 101 provided. Encloses the housing element 98 in addition, a throttle valve control unit 106.
  • the Servomotor unit 91 with the rotor unit 97 ensures this that the throttle valve angle from the throttle valve closed position up to full throttle accordingly is adjusted. This ensures an air throughput, the one for providing an appropriate Mixture is required. With the help of the angle sensor unit 93 the corresponding throttle valve angle is measured and provided for further processing.
  • the valve unit 95 with an emergency position signal controlled.
  • the emergency position signal leads to a permanent opening of the valve unit 95, namely Opening so wide that an air flow of about 40 kg air / h is guaranteed.
  • This air is released from the tank or via the activated carbon filter of the tank ventilation Air flow cavity 103 supplied.
  • the so fed Air volume is sufficient to get the vehicle out of a danger zone move it out or take it to a workshop to fix the Driving damage.
  • Actuation of the valve unit 95 should be done in such a way that it differs from the usual control signals used is independent. It's closed ensure that even if the control unit or the power supply to the throttle valve unit 90 separate control of the valve unit 95 is given.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)

Description

Die Erfindung betrifft eine Drosselklappenvorrichtung, wie z.B. in der EP-A-525 376 gezeigt, die aufweist

  • ein Gehäuseelement,
  • ein Drosselklappenelement
  • das zwischen einem ersten Luftdurchsatzhohlraum und einem zweiten zu einem Fahrzeug-Motor führenden Luftdurchsatzhohlraum im Gehäuseelement angeordnet und
  • das mit einem Drosselklappenwellenelement zwischen einer Drosselklappenschließ- und einer Vollgasstellung verstellbar ist,
  • eine Verstelleinheit
    mit wenigstens einer Stellmotoreinheit und einem integrierten Rückstellmechanismus, die mit dem Drosselklappenwellenelement verbunden sind, und
  • eine Notlauf-Luftsteuereinrichtung,
    mit deren Hilfe bei Ausfall der Stellmotoreinheit ein Luftdurchsatz für ein Bewegen eines Fahrzeuges zur Verfügung stellbar ist.
The invention relates to a throttle valve device, such as shown in EP-A-525 376, which comprises
  • a housing element,
  • a throttle valve element
  • arranged in the housing element between a first air throughput cavity and a second air throughput cavity leading to a vehicle engine and
  • which is adjustable with a throttle valve shaft element between a throttle valve closing and a full throttle position,
  • an adjustment unit
    with at least one servomotor unit and an integrated reset mechanism which are connected to the throttle valve shaft element, and
  • an emergency air control device,
    with the help of which an air throughput for moving a vehicle can be made available in the event of a failure of the servomotor unit.

In modernen Drosselklappenvorrichtungen wird die Drosselklappe mit einem Stellmotor verstellt. Diese Art der Drosselklappenverstellung ist unter dem Fachbegriff Drive-by-wire bekannt. Der Stellmotor ist mit einer Drosselklappenwelle verbunden, die im Gehäuse drehbar gelagert ist.In modern throttle valve devices, the throttle valve adjusted with a servomotor. That kind of Throttle valve adjustment is under the technical term Drive-by-wire known. The servomotor is with a Throttle valve shaft connected, which rotates in the housing is stored.

Kommt es allerdings zu einem Ausfall des Stellmotors, ist nicht sichergestellt, daß die Drosselklappe eine solche Stellung innehat, die es dem Fahrer ermöglicht, sein Fahrzeug zu einer Werkstatt zu fahren bzw. es aus einer Gefahrenzone zu bewegen. However, if the servomotor fails, not ensured that the throttle valve is such Position that enables the driver to be Drive vehicle to a workshop or take it out of a To move the danger zone.

Eine weitere, ähnliche Vorrichtung ist aus der USA-A-4 947 815 bekannt. Another similar device is out U.S.-A-4,947,815.

Ausgehend von einer Drosselklappenvorrichtung mit einer Notlauf-Luftsteuereinrichtung der eingangs genannten bekannten Art liegt der Erfindung die Aufgabe zugrunde, die Notlauf-Luftsteuereinrichtung einfacher und sicherer zu gestalten.Starting from a throttle valve device with a Emergency running air control device of the known known Art is the object of the invention, the Emergency running air control device easier and safer too shape.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruches 1 gelöst.According to the invention, this object is achieved through the features of Claim 1 solved.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, daß die Ventileinheit, die an sich die Aufgabe hat, vom Tank abgegebene Kraftstoffdämpfe abzugeben, gezielt einer weiteren Verwendung zugeführt wird. Durch eine gezielte Ansteuerung der Ventileinheit übernimmt diese bei Ausfall der Stellmotoreinheit die Aufgabe, dem Luftdurchsatzhohlraum so viel Luft zur Verfügung zu stellen, daß ein ausreichendes, zündfähiges Gemisch zur Verfügung steht, die dem Fahrer es ermöglicht, ganz gezielt sein Fahrzeug aus der Gefahrenzone bzw. an einen anderen Ort zu bewegen.The advantages achieved with the invention are in particular in that the valve unit, which in itself is the Task is to release fuel vapors emitted by the tank, is targeted for further use. By a targeted control of the valve unit assumes this Failure of the actuator unit the task, the air flow cavity to provide so much air that a sufficient, ignitable mixture is available that enables the driver to specifically target his vehicle from the To move the danger zone or to another location.

Vorteilhaft ist es, wenn die Steuereinheit im Gehäusedeckelelement oder im Gehäuseelement angeordnet ist. Hierdurch wird erreicht, daß die entsprechenden Steuersignale unmittelbar übertragen werden können.It is advantageous if the control unit in the housing cover element or is arranged in the housing element. This ensures that the corresponding control signals can be transferred immediately.

Die Ventileinheit kann ein elektromagnetisch betätigbares Ventil sein, das eine im wesentlichen ringförmige Magnetspule umfaßt, die einen in axialer Richtung hin und her bewegbaren Magnetanker aus metallischem Werkstoff umschließt, wobei der Magnetanker auf der dem Ventilsitz zugewandten Stirnseite mit einem Dichtkörper aus elastomerem Werkstoff verschlossen ist und wobei der Magnetanker und der Dichtkörper formschlüssig miteinander verbunden sind. The valve unit can be operated electromagnetically Valve, which is a substantially annular solenoid includes a back and forth in the axial direction movable magnetic armature made of metallic material encloses, the magnet armature on the the valve seat facing end face with a sealing body made of elastomer Material is closed and the magnet armature and the Sealing bodies are positively connected to one another.

Im Ergebnis langwieriger Versuche wurde festgestellt, daß für die Realisierung einer Notlaufstellung der Luftdurchsatz zwischen 20 bis 80 kg Luft/h, vorzugsweise 40 kg Luft/h beträgt.As a result of lengthy trials, it was found that for the realization of an emergency running position the air flow between 20 to 80 kg air / h, preferably 40 kg air / h is.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Hierbei werden die Vorteile der erfindungsgemäßen Lösung durch weitere Ausführungen ergänzt. Es zeigen:

Fig. 1
eine Drosselklappenvorrichtung mit einer weiteren Notlauf-Luftsteuereinrichtung in einer schematischen Schnittdarstellung,
Fig. 2
eine Drosselklappenvorrichtung gemäß Fig. 1 in einer weiteren Darstellung und
Fig. 3a und 3b
eine Unterbringungsvariante einer Steuereinrichtung.
An embodiment of the invention is shown in the drawing and will be described in more detail below. Here, the advantages of the solution according to the invention are supplemented by further designs. Show it:
Fig. 1
a throttle valve device with a further emergency operation air control device in a schematic sectional view,
Fig. 2
a throttle valve device according to FIG. 1 in a further representation and
3a and 3b
an accommodation variant of a control device.

In den Fig. 1 und 2 ist ein Teil eines Drive-by-wire-Systems dargestellt.1 and 2 is part of a drive-by-wire system shown.

Es setzt sich aus

  • einer Drosselklappeneinheit 90 und
  • einer Verstelleinheit 107
zusammen.It exposes itself
  • a throttle valve assembly 90 and
  • an adjustment unit 107
together.

Die Drosselklappeneinheit 90 und die Verstelleinheit 107 befinden sich in einem gemeinsamen Gehäuseelement 98. Im Gehäuseelement 98 ist ein Drosselklappenwellenelement 99 angeordnet. Am Drosselklappenwellenelement 99 befindet sich ein Drosselklappenelement 100, das in einer Drosselklappenschließstellung einen Luftdurchsatzhohlraum 91 von einem Luftdurchsatzhohlraum 103 trennt. Mit dem Drosselklappenwellenelement 99 ist die Verstelleinheit 107 verbunden. Sie besteht aus einer Stellmotoreinheit 91, die über eine Rotoreinheit 97 mit dem Drosselklappenwellenelement 99 verbunden ist. In die Verstelleinheit 107 ist ein Rückstellmechanismus integriert, der dafür sorgt, daß das Drosselklappenelement nach einer Verstellung in einen Drosselklappenwinkel immer in die Drosselklappenschließstellung zurückkehrt. Einsetzbar hierfür wäre zum Beispiel eine Rückstellfeder. An der gegenüberliegenden Seite der Drosselklappenwellenelements 99 ist eine Winkelsensoreinheit 93 befestigt. Sie besteht aus einer stationären Einheit 93.1 und einer rotierenden Einheit 93.2. Die rotierende Einheit 93.2 ist mit dem Drosselklappenwellenelement verbunden, während die stationäre Einheit im Drosselklappengehäuseelement 98 gehalten ist. Das Drosselklappengehäuseelement 98 umschließt darüber hinaus, wie Fig. 2 zeigt, eine Ventileinheit 95. Die Ventileinheit 95 weist einen Anschlußstutzen 95.1 für einen Gummischlauch auf. Sie ist durch eine Kraftdunstausnehmung 102 mit dem Inneren des Gasgemischhohlraums 103 verbunden. Die Ventileinheit 95 hat an sich die Aufgabe, insbesondere die vom Tank bzw. Aktivkohlefilter der Tankentlüftung kommenden Benzindämpfe entsprechend zu steuern. Sie ist ein elektromagnetisch betätigbares Ventil (AKF-Ventil), umfassend eine ringförmig ausgebildete Magnetspule, die einen in axialer Richtung der Magnetspule hin und her bewegbaren Magnetanker aus metallischem Werkstoff umschließt, wobei der Magnetanker auf der dem Ventilsitz zugewandten Stirnseite mit einem Dichtkörper aus elastomerem Werkstoff versehen ist. Der Magnetanker und der Dichtkörper sind formschlüssig miteinander verbunden. Bei dem elektromagnetisch betätigbaren Ventil handelt es sich um ein Komplett-Bauteil, das insbesondere in der EP-A-0 623 772 ausführlich beschrieben ist.The throttle valve unit 90 and the adjustment unit 107 are located in a common housing element 98 Housing member 98 is a throttle valve shaft member 99 arranged. Is located on the throttle valve shaft element 99 a throttle valve element 100 that is in a throttle valve closed position an air flow cavity 91 from one Air flow cavity 103 separates. With the throttle valve shaft element 99, the adjustment unit 107 is connected. she consists of an actuator unit 91, which has a Rotor unit 97 with the throttle valve shaft element 99 connected is. In the adjustment unit 107 is a reset mechanism integrated, which ensures that the throttle valve element after adjustment to a throttle valve angle always in the throttle valve closed position returns. For example, one could be used for this Return spring. On the opposite side of the throttle shaft member 99 is an angle sensor unit 93 attached. It consists of a stationary unit 93.1 and a rotating unit 93.2. The rotating unit 93.2 is connected to the throttle valve shaft element, while the stationary unit in the throttle body element 98 is held. The throttle body member 98 furthermore, as shown in FIG. 2, encloses a valve unit 95. The valve unit 95 has a connecting piece 95.1 for a rubber hose. It is through one Force vapor recess 102 with the interior of the gas mixture cavity 103 connected. The valve unit 95 has itself the task, especially that of the tank or activated carbon filter the gasoline vapors corresponding to the tank ventilation Taxes. It is an electromagnetically actuated valve (AKF valve), comprising a ring-shaped Magnetic coil, one in the axial direction of the magnetic coil back and forth movable magnetic armature made of metallic Material encloses, the magnetic armature on the End face facing the valve seat with a sealing body elastomeric material is provided. The magnet armature and the Sealing bodies are positively connected to one another. At the electromagnetically actuated valve is a complete component, in particular in EP-A-0 623 772 is described in detail.

Der Ventileinheit 95 gegenüberliegend ist eine Zentralsteckereinheit 96 angeordnet. Im Gehäuseelement ist ein Leitungskanal 101 vorgesehen. Das Gehäuseelement 98 umschließt dabei darüber hinaus eine Drosselklappensteuereinheit 106. Opposite the valve unit 95 is a central plug unit 96 arranged. There is a duct in the housing element 101 provided. Encloses the housing element 98 in addition, a throttle valve control unit 106.

Sie ist gemäß Fig. 1 unmittelbar hinter der Stellmotoreinheit 91 positioniert.1, it is immediately behind the servomotor unit 91 positioned.

Eine andere Möglichkeit der Unterbringung einer Steuereinheit ist in den Fig. 3a und 3b gezeigt. Hier wird eine Drosselklappensteuereinheit 66 im Inneren eines Gehäusedeckelelements 65 angeordnet. Wesentlich ist, daß in beiden Fällen die Steuereinheit 66 bzw. 106 vor äußeren Einflüssen geschützt direkter Bestandteil der Drosselklappeneinheit ist. Innerhalb des Gehäuseelements zu verlegende Steuerleitungen können geschützt in dem Leitungskanal 101 geführt und zentral über die Zentralsteckereinheit 96 nach außen geleitet werden. Um eine Temperatursensoreinheit 94 gleichfalls vor äußeren Einflüssen geschützt zu positionieren, ist diese im Inneren der Zentralsteckereinheit 96 angeordnet.Another way of housing a control unit is shown in Figs. 3a and 3b. Here is one Throttle valve control unit 66 inside a housing cover element 65 arranged. It is essential that in In both cases, the control unit 66 or 106 in front of the outside Influences protected direct component of the throttle valve unit is. To be installed within the housing element Control lines can be protected in the line channel 101 guided and centrally via the central connector unit 96 be led outside. A temperature sensor unit 94 also positioned to be protected from external influences, it is inside the central plug unit 96 arranged.

Die Arbeitsweise der Notlauf-Luftsteuereinrichtung, wie sie in den Fig. 1 und 2 dargestellt ist, sei erläutert:The operation of the run-flat air control device as it does 1 and 2, is explained:

Wird das Gaspedal betätigt, wird dessen Stellungssignal auf die Drosselklappensteuereinheit 106 übertragen. Die Stellmotoreinheit 91 mit der Rotoreinheit 97 sorgt dabei dafür, daß der Drosselklappenwinkel von der Drosselklappenschließstellung bis hin zur Vollgasstellung entsprechend verstellt wird. Hierdurch wird ein Luftdurchsatz gewährleistet, der für die Bereitstellung eines entsprechenden Gemisches erforderlich ist. Mit Hilfe der Winkelsensoreinheit 93 wird der entsprechende Drosselklappenwinkel gemessen und für eine weitere Verarbeitung bereitgestellt.If the accelerator pedal is operated, its position signal will open transmit the throttle valve control unit 106. The Servomotor unit 91 with the rotor unit 97 ensures this that the throttle valve angle from the throttle valve closed position up to full throttle accordingly is adjusted. This ensures an air throughput, the one for providing an appropriate Mixture is required. With the help of the angle sensor unit 93 the corresponding throttle valve angle is measured and provided for further processing.

Fällt die Stellmotoreinheit 91 aus, wird durch entsprechende Rückstellelemente das Drosselklappenelement 100 in die Drosselklappenschließstellung zurückgefahren. Danach wird die Ventileinheit 95 mit einem Notlaufstellungssignal angesteuert. Das Notlaufstellungssignal führt zu einem dauerhaften Öffnen der Ventileinheit 95, und zwar wird die Öffnung so weit gestellt, daß ein Luftdurchsatz von etwa 40 kg Luft/h gewährleistet ist. Diese Luft wird aus dem Tank bzw. über den Aktivkohlefilter der Tankentlüftung dem Luftdurchsatzhohlraum 103 zugeführt. Die so zugeführte Luftmenge reicht aus, um das Fahrzeug aus einer Gefahrenzone herauszubewegen bzw. es zu einer Werkstatt zur Behebung des Schadens zu fahren. Die Ansteuerung der Ventileinheit 95 sollte dabei so vorgenommen werden, daß sie von den üblicherweise verwendeten Steuersignalen unabhängig ist. Es ist zu gewährleisten, daß selbst bei Ausfall der Steuereinheit bzw. der Stromversorgung zur Drosselklappeneinheit 90 ein separates Ansteuern der Ventileinheit 95 gegeben ist.If the servomotor unit 91 fails, the corresponding Reset elements, the throttle valve element 100 in the Throttle valve closed position retracted. After that the valve unit 95 with an emergency position signal controlled. The emergency position signal leads to a permanent opening of the valve unit 95, namely Opening so wide that an air flow of about 40 kg air / h is guaranteed. This air is released from the tank or via the activated carbon filter of the tank ventilation Air flow cavity 103 supplied. The so fed Air volume is sufficient to get the vehicle out of a danger zone move it out or take it to a workshop to fix the Driving damage. Actuation of the valve unit 95 should be done in such a way that it differs from the usual control signals used is independent. It's closed ensure that even if the control unit or the power supply to the throttle valve unit 90 separate control of the valve unit 95 is given.

Claims (3)

  1. A throttle valve device comprising:
    a housing element (98),
    a throttle valve element (100),
    which is disposed in the housing element (98) between a first air flowthrough chamber and a second air flowthrough chamber (103) leading to a vehicle engine, and
    which is adjustable by a throttle valve shaft element (99) between a throttle valve closed position and an all-the-way open position,
    a positioning unit (107)
    comprising at least one servomotor unit (91) and an integrated resetting mechanism, which unit and mechanism are connected to the throttle valve shaft element (99), and
    an emergency air control system (95, 102), by means of which in the event of failure of the servomotor unit (91) an air flowthrough can be set to enable the vehicle to be moved,
    characterised in that the emergency air control system is so constructed
    that a valve unit (95) disposed on the housing element (98) is connected to the second air flowthrough chamber that a valve unit (95) disposed on the housing element (98) is connected to the second air flowthrough chamber (103) by a fuel vapour opening (102) leading through the housing element (98) and
    in the event of failure of the servomotor unit (91) the throttle valve element (100) is adapted to be set to the throttle valve closed position by means of the resetting mechanism and the valve unit (95) is adapted to be so controlled that the air flowthrough is guaranteed from a tank or via a tank venting system to enable the vehicle to be moved.
  2. A device according to claim 1, characterised in that the valve unit (95) is an electromagnetically actuatable valve, which comprises a substantially annular solenoid enclosing a magnet armature of metallic material adapted to reciprocate in the axial direction, the magnet armature being sealed, on the end face facing the valve seat, with a sealing member of elastomeric material, and wherein the magnet armature and the sealing member are positively interconnected.
  3. A device according to claim 1 or 2, characterised in that the air flowthrough is 20 to 80 kg of air per hour, preferably 40 kg of air per hour.
EP95923335A 1994-06-18 1995-06-16 Throttle valve device Expired - Lifetime EP0714478B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE9409891U DE9409891U1 (en) 1994-06-18 1994-06-18 Arrangement for the emergency driving position of a throttle valve element
DE9409891U 1994-06-18
DE19512916 1995-04-06
DE19512916A DE19512916C2 (en) 1994-06-18 1995-04-06 Throttle valve device
PCT/EP1995/002334 WO1995035440A2 (en) 1994-06-18 1995-06-16 Throttle valve device

Publications (2)

Publication Number Publication Date
EP0714478A1 EP0714478A1 (en) 1996-06-05
EP0714478B1 true EP0714478B1 (en) 2000-04-26

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EP95923335A Expired - Lifetime EP0714478B1 (en) 1994-06-18 1995-06-16 Throttle valve device

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US (1) US5752484A (en)
EP (1) EP0714478B1 (en)
ES (1) ES2147852T3 (en)
WO (1) WO1995035440A2 (en)

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Also Published As

Publication number Publication date
US5752484A (en) 1998-05-19
ES2147852T3 (en) 2000-10-01
WO1995035440A3 (en) 1996-02-29
EP0714478A1 (en) 1996-06-05
WO1995035440A2 (en) 1995-12-28

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