EP1404958B1 - Throttle valve housing - Google Patents

Throttle valve housing Download PDF

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Publication number
EP1404958B1
EP1404958B1 EP02752977A EP02752977A EP1404958B1 EP 1404958 B1 EP1404958 B1 EP 1404958B1 EP 02752977 A EP02752977 A EP 02752977A EP 02752977 A EP02752977 A EP 02752977A EP 1404958 B1 EP1404958 B1 EP 1404958B1
Authority
EP
European Patent Office
Prior art keywords
throttle
throttle valve
housing
electronics
gaseous medium
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 - Fee Related
Application number
EP02752977A
Other languages
German (de)
French (fr)
Other versions
EP1404958A1 (en
Inventor
Günther BENDER
Jörg Krüger
Axel Gössling
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.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
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Publication of EP1404958A1 publication Critical patent/EP1404958A1/en
Application granted granted Critical
Publication of EP1404958B1 publication Critical patent/EP1404958B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0406—Intake manifold pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0414—Air temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium

Definitions

  • the invention relates to a throttle body with a housing containing one of a gaseous medium in a main flow direction permeable through Has throttle opening, wherein in the throttle opening on a throttle valve shaft pivotally mounted throttle is arranged, wherein the throttle shaft of an actuator is pivotable, the throttle opening on the input side to an input line and the output side to a Output line is connected and being upstream in front of the throttle valve, a first temperature T sensor of the gaseous medium and downstream of the throttle a second sensor for the pressure T of the gaseous medium is arranged.
  • Throttle body For controlling the internal combustion engine of a motor vehicle supplied fresh gas amount are usually throttle body used.
  • Throttle body include Housing with a through throttle opening and a in the Throttle opening arranged throttle body.
  • the throttle body is often designed as a throttle and takes for the Passing a certain amount of fresh gas a certain position in the throttle opening. This is the throttle mechanically or electronically controllable.
  • the throttle of a throttle body can in a Partial area, for example the idle area, of one Actuator movable and in the remaining area with the help of a to the gas pedal of the motor vehicle coupled wire rope be movable.
  • the throttle may, however also in their entire adjustment of an actuator be movable.
  • throttle body in which the control unit for the actuator in the housing of the Throttle body is integrated.
  • the control unit can In this case integrated in an arranged in the housing electronics be.
  • the electronics are there for more functions provided the throttle body, for example for the Control of a position control of the throttle shaft as well as the collection and storage of data of the throttle body.
  • An integration of the electronics in the housing of the throttle body is often with one extra connected large manufacturing and assembly costs because the housing additionally have a receptacle for the electronics got to.
  • an additional assembly step is required in which the electronics integrated into the throttle body housing becomes.
  • a throttle body of the type mentioned is out JP-A-4066736.
  • the pressure sensor protrudes directly into the throttle opening. By contamination of the pressure sensor can it to distortions of the measurement result of the Pressure sensor come, so that based on this measurement result Values of the determined air mass are falsified.
  • a throttle device for a Internal combustion engine which has a pivotally drivable Throttle in the permeable by a gaseous medium Has throttle opening.
  • the throttle is through bypassing a bypass for idle control, in which a Pressure sensor is arranged.
  • the bypass is for idle control by an idle valve more or less lockable.
  • the invention is therefore based on the object, a throttle body of the type mentioned above, with especially simple means even over particularly long periods A particularly reliable determination of the by the throttle opening passing air mass reliable guaranteed.
  • This object is achieved in that the second provided for the pressure P of the gaseous medium Sensor disposed in the housing and via a in the housing arranged channel is connected to the throttle opening.
  • An arrangement of the pressure sensor in the housing protects the Pressure sensor particularly reliable against contamination.
  • the invention is based on the consideration that a Air mass sensor for a throttle body - the same Particularly reliable over long periods of time Measurement results ensured - protected against contamination should be. However, this can be done especially in an intake air duct of a passenger car only with particularly high Effort through the installation of a complex filter system guarantee.
  • Alternative to direct air mass measurement the throttle body passing air mass determine.
  • a temperature and a pressure sensor are available at. From the temperature of the air and the pressure of the air can reliably be passed through the throttle opening Determine air mass.
  • Airflow are also suitable for standard sensors that even in mass production no significant contribution to the Deliver costs. To reliably measure the pressure of the to ensure air flow passing through the throttle opening, this is the pressure sensor in the flow direction behind the throttle and the temperature sensor in the flow direction arranged in front of the throttle.
  • the first for the temperature T of gaseous medium sensor provided on the housing of the Throttle body arranged and protrudes at least partially into the throttle opening.
  • An integration of the temperature sensor in the housing of the throttle body allows a preassembly of the temperature sensor in the housing the throttle body, so that the temperature sensor then together with the housing of the throttle body between the input line and the output line is to be arranged. This is the throttle for the throttle body and the assembly the temperature sensor required effort especially low.
  • the housing is of a housing cover closed, wherein in the housing cover electronics for the first provided for the temperature T of the gaseous medium Sensors and the second for the pressure P of the gaseous Mediums provided sensor is arranged.
  • the housing cover electronics for the two sensors on so are the signals of the sensors are particularly reliable due to the short path between the sensors and the electronics to the Electronics transferable, eliminating errors due to signal transmissions or disturbances in the transmission lines are avoided particularly reliable.
  • the electronics also include the controller of the actuator. Furthermore, advantageously, the throttle valve shaft connected to a position detection device, which is readable via the electronics. In electronics So are all recorded data of the throttle body readable and for further purposes in the motor vehicle reprocessed.
  • the electronics are on a printed circuit board arranged. If the electronics in the housing before installation arranged on a printed circuit board, in particular with the aid of integrated circuits, so can the electronics in integrate into the housing in a single assembly step. The Electronics is then connected to both with suitable connections Units outside the housing as well as with in or on the throttle body arranged sensors connectable.
  • the electronics via a plug connection with the position detection device and connected to the actuator.
  • Due to the spatial Near position detection device and actuator can be by means of a single component, a connection between the electronics and the Position detection device on the one hand and the electronics and the actuator on the other hand.
  • the advantages achieved by the invention are in particular that by the indirect measurement of passing through the throttle opening Air mass with sensors that are particularly resistant to contamination are. particularly reliable over long periods of time Measurement of passing through the throttle opening air mass during operation the throttle body is reliably guaranteed.
  • the throttle body 10 of FIG. 1 serves to a not shown Consumers, such as an injector one also not shown motor vehicle, an air or a fuel-air mixture supply, by means of the throttle body 10, the consumer supplied fresh gas quantity is controllable.
  • the throttle body 10 a housing 12, which is made predominantly of aluminum 14 is. Alternatively, however, the housing may also be made of plastic.
  • the Housing 12 includes a through throttle opening 16, over which not represented consumer air or a fuel-air mixture can be fed.
  • a throttle valve 22 arranged to adjust the supplied volume of fresh gas is on a Throttle valve shaft 18 by means of fastening means 20, a throttle valve 22 arranged.
  • the throttle shaft 18, the fastening means 20 and the throttle valve 22 are shown in Fig. 1 in an exploded view.
  • Ein Pivoting the throttle 22 causes an increase or decrease the opening of the throttle opening 16. This is the amount of through the throttle opening 16 passing through the flow medium adjustable. through a movement of the throttle valve 22 is thus a regulation of the Throughput of the air or fuel-air mixture through the throttle opening 16 of the throttle body 10.
  • the throttle shaft 18 may be connected to a pulley, not shown be connected, in turn, via a Bowden cable with an adjustment for a performance request.
  • the adjustment device can be designed as an accelerator pedal of a motor vehicle, so that a Actuation of this adjustment by the driver of the motor vehicle Throttle valve 22 from a position of minimum opening, in particular one Closed position, to a position of maximum opening, in particular a Open position can be brought to thereby the output of the To control motor vehicle.
  • the throttle shaft 18 of the throttle body 10 shown in FIG. 1 in contrast, is either in a partial area of an actuator and otherwise via the accelerator pedal adjustable or the throttle valve 22nd is adjustable over the entire adjustment range of an actuator.
  • the mechanical Power control such as depressing an accelerator pedal, in a implemented electrical signal. This signal in turn becomes a control unit supplied, which generates a drive signal for the actuator.
  • the throttle body 10 has a drive housing 24.
  • the drive housing 24 is integral with the housing 12 of the throttle body 10th executed.
  • the housing 12 of the throttle body 10 and the drive housing 24 may alternatively be designed in two pieces.
  • Drive housing 24 is designed as an electric motor electric actuator 26 arranged.
  • the trained as an electric motor electric actuator 26 is connected via a gear 28 to the throttle shaft 18.
  • the Throttle valve shaft 18 is thus formed by the electric motor Actuator 26 pivotable.
  • the throttle valve 22 is via the throttle shaft 18 of a return spring 28 acted upon Heidelbergschwenkbar in a basic position.
  • An emergency stop spring 30 ensures that even in case of failure of the electric motor trained electric actuator 26, the throttle valve is not complete is closed, so that despite the failure of trained as an electric motor Actuator 26 a albeit low driving performance of the motor vehicle is reliably guaranteed.
  • the return spring 28 and the emergency spring 30 are disposed at a first end 32 of the throttle shaft 18.
  • the housing 12 is closable at this end by a first cover 24.
  • At the second end 36 of the throttle shaft 18 is a as Potentiometer trained position detection device 38 for detection the current position of the throttle shaft 18 and thus indirectly the Throttle valve 22 is arranged.
  • the trained as a potentiometer position detection device 38 and the trained as an electric motor actuator 26 are using a connector 40 connected to a circuit board 42.
  • the circuit board 42 is here separated by a cover plate 44 of the housing portion in which the Potentiometer 38 and designed as an electric motor actuator 26 is arranged are.
  • the cover plate 44 reliably protects the circuit board 42 from contamination, due to the operation of the mechanical elements in the throttle body 10 are inevitable.
  • On the circuit board 42 is the electronics 46 for the trained as an electric motor actuator 26 and as a potentiometer trained position detection device 38 is arranged.
  • the circuit board 42 is in the assembly of the throttle body 10 in a lid 48 to be arranged, wherein by means of the lid 48, the housing 12 of the throttle body 10 closed from the spring system facing away from side is.
  • a temperature sensor 50 and a pressure sensor 52 are arranged as shown in FIG.
  • the temperature sensor is downstream of the throttle 22 and the pressure sensor 52 is downstream of the throttle 22 at arranged the housing 12 of the throttle body 10.
  • the temperature sensor 50 is via an electrical connector 54 with the on the circuit board 42 arranged electronics 46 connected, which can not be seen in Fig. 2 is, since it is arranged in the cover 46 of the housing 12.
  • the temperature sensor 50 projects into the throttle opening 16. This is a common component for measuring temperature.
  • the pressure sensor 52 is in the housing 12 of the throttle body 10th downstream of the throttle valve 22 is arranged.
  • the pressure sensor 52 is also by means of an electrical connector 56 with the on the circuit board 42 arranged electronics 48 connected, which is also not in Fig. 2 is shown in more detail.
  • the pressure sensor 52 is arranged via a in the housing 12 Channel 58 connected to the throttle opening.
  • the temperature sensor 50 and the pressure sensor 52 3 may be arranged in lines to which the throttle body 10 is connected.
  • Fig. 3 shows an input line 60, to which the Throttle body 10 is connected on the input side and an output line 62, to which the throttle body 10 is connected on the output side is. Schematically, the throttle body 10 is shown here.
  • the throttle body is thus according to FIG. 3 on the input side to an air supply line as input line 60 and the output side to an output line 62, which is designed as a pressure line connected.
  • Fig. 3 is the temperature sensor 50 in the input line 60 and the pressure sensor 52 arranged in the output line 62.
  • the throttle opening 16 of the Throttle valve 10 gaseous medium 66 supplied in this Embodiment is designed as air.
  • the gaseous medium 66 has in front of the throttle valve 22 of the throttle body 10, a certain temperature T, which can be detected by means of the temperature sensor 50. downstream after the throttle 22 of the throttle body 10, the air a certain pressure which can be detected by means of the pressure sensor 52.
  • the detected at certain intervals pressure and / or temperature values in a manner not shown arranged on the circuit board 42 electronics 46 of the throttle body 10 can be fed.
  • the electronics 46 of the Printed circuit board 42 has suitable evaluation electronics, by means of which of the detected pressure and / or temperature data passing through the throttle opening 16 in permeating air mass can be determined.
  • the electronics have more Modules, by means of which the currently determined air mass with others Information of the motor vehicle can be connected and evaluated.

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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)
  • Lift Valve (AREA)

Abstract

The invention relates to a throttle valve housing (10) comprising a housing (12) having a continuous throttle hole (16) that can be cross flown by a gaseous medium (66) in a main flow direction (64), wherein a throttle valve (22) pivotally fixed to a throttle valve shaft (18) is arranged in the throttle hole (16), wherein said throttle valve shaft (18) can be pivoted by an actuating drive (26) and wherein the throttle hole (16) is connected to an inlet line (60) on the inlet side and to an outlet line (62) on the outlet side. The invention aims at ensuring particularly reliable detection of the mass of gaseous medium (66) coming in through the throttle hole (16), using particularly simple means. This is achieved in that a first temperature sensor (50) for temperature T of the gaseous medium is arranged upstream of the throttle valve (22) and in that a second pressure sensor (52) for pressure P of the gaseous medium (66) is arranged downstream of the throttle valve (22).

Description

Die Erfindung bezieht sich auf einen Drosselklappenstutzen mit einem Gehäuse, das eine von einem gasförmigen Medium in einer Hauptströmungsrichtung durchströmbare durchgehende Drosselöffnung aufweist, wobei in der Drosselöffnung eine auf einer Drosselklappenwelle schwenkbar befestigte Drosselklappe angeordnet ist, wobei die Drosselklappenwelle von einem Stellantrieb verschwenkbar ist, wobei die Drosselöffnung eingangsseitig an eine Eingangsleitung und ausgangsseitig an eine Ausgangsleitung angeschlossen ist und wobei stromaufwärts vor der Drosselklappe ein erster Sensor für die Temperatur T des gasförmigen Mediums und stromabwärts nach der Drosselklappe ein zweiter Sensor für den Druck T des gasförmigen Mediums angeordnet ist.The invention relates to a throttle body with a housing containing one of a gaseous medium in a main flow direction permeable through Has throttle opening, wherein in the throttle opening on a throttle valve shaft pivotally mounted throttle is arranged, wherein the throttle shaft of an actuator is pivotable, the throttle opening on the input side to an input line and the output side to a Output line is connected and being upstream in front of the throttle valve, a first temperature T sensor of the gaseous medium and downstream of the throttle a second sensor for the pressure T of the gaseous medium is arranged.

Zur Steuerung der dem Verbrennungsmotor eines Kraftfahrzeugs zuzuführenden Frischgasmenge werden üblicherweise Drosselklappenstutzen eingesetzt. Drosselklappenstutzen umfassen ein Gehäuse mit einer durchgehenden Drosselöffnung und ein in der Drosselöffnung angeordnetes Drosselorgan. Das Drosselorgan ist häufig als Drosselklappe ausgebildet und nimmt für den Durchlaß einer bestimmten Frischgasmenge eine bestimmte Stellung in der Drosselöffnung ein. Hierzu ist die Drosselklappe mechanisch oder elektronisch ansteuerbar.For controlling the internal combustion engine of a motor vehicle supplied fresh gas amount are usually throttle body used. Throttle body include Housing with a through throttle opening and a in the Throttle opening arranged throttle body. The throttle body is often designed as a throttle and takes for the Passing a certain amount of fresh gas a certain position in the throttle opening. This is the throttle mechanically or electronically controllable.

Die Drosselklappe eines Drosselklappenstutzens kann in einem Teilbereich, zum Beispiel dem Leerlaufbereich, von einem Stellantrieb bewegbar und im restlichen Bereich mit Hilfe eines an das Gaspedal des Kraftfahrzeugs gekoppelten Drahtseiles bewegbar sein. Alternativ kann die Drosselklappe jedoch auch in ihrem gesamten Verstellbereich von einem Stellantrieb bewegbar sein. The throttle of a throttle body can in a Partial area, for example the idle area, of one Actuator movable and in the remaining area with the help of a to the gas pedal of the motor vehicle coupled wire rope be movable. Alternatively, the throttle may, however also in their entire adjustment of an actuator be movable.

Bei diesen letztgenannten Systemen gibt es keine mechanische Verbindung zwischen der Sollwertvorgabe, insbesondere dem Gaspedal, und der Drosselklappe. Ausgelöst durch das Niederdrücken des Gaspedals wird bei diesen sogenannten E-Gas- oder Drive-by-wire-Systemen die Leistungsanforderung in ein elektrisches Signal umgesetzt. Das elektrische Signal wird einer Steuereinheit zugeführt, die wiederum aus dem elektrischen Signal ein Ansteuersignal für den Stellantrieb erzeugt.In these latter systems, there is no mechanical Connection between the setpoint specification, in particular the Accelerator, and the throttle. Triggered by the depression the accelerator pedal is at these so-called E-gas or Drive-by-wire systems turn the power requirement into an electrical one Signal implemented. The electrical signal becomes one Control unit supplied, in turn, from the electrical Signal generates a drive signal for the actuator.

Um Fehler bei E-Gas-Systemen bei der Übermittlung des Ansteuersignals von der Steuereinheit zum Antrieb der Drosselklappenwelle zu vermeiden, gibt es Drosselklappenstutzen, bei denen die Steuereinheit für den Stellantrieb in das Gehäuse des Drosselklappenstutzens integriert ist. Die Steuereinheit kann dabei in eine in dem Gehäuse angeordnete Elektronik integriert sein. Die Elektronik ist dabei für weitere Funktionen des Drosselklappenstutzens vorgesehen, beispielsweise für die Ansteuerung einer Positionskontrolle der Drosselklappenwelle sowie die Erfassung und Speicherung von Daten des Drosselklappenstutzens. Eine Integration der Elektronik in das Gehause des Drosselklappenstutzens ist häufig mit einem besonders großen Herstellungs- und Montageaufwand verbunden, da das Gehause zusatzlich eine Aufnahme für die Elektronik aufweisen muß. Außerdem ist zur Montage des Drosselklappenstutzens ein zusatzlicher Montageschritt erforderlich, bei dem die Elektronik in das Gehäuse des Drosselklappenstutzens integriert wird.To errors in e-gas systems in the transmission of the drive signal from the control unit for driving the throttle shaft To avoid, there are throttle body, in which the control unit for the actuator in the housing of the Throttle body is integrated. The control unit can In this case integrated in an arranged in the housing electronics be. The electronics are there for more functions provided the throttle body, for example for the Control of a position control of the throttle shaft as well as the collection and storage of data of the throttle body. An integration of the electronics in the housing of the throttle body is often with one extra connected large manufacturing and assembly costs because the housing additionally have a receptacle for the electronics got to. In addition, for mounting the throttle body an additional assembly step is required in which the electronics integrated into the throttle body housing becomes.

Zur Lastermittlung eines Verbrennungsmotors, insbesondere eines Otto-Motors eines Personenkraftwagens, wird üblicherweise mittels eines Luftmassensensors die durch die Drosselöffnung des Drosselklappenstutzens hindurchtretende Luftmasse gemessen. Der hierzu erforderliche Luftmassensensor, HFH, ist jedoch technisch aufwendig und insbesondere bei einer Massenproduktion von Drosselklappenstutzen ein nicht unerheblicher Kostenfaktor. Zudem wird bei einer Verschmutzung des Luftmassensensors das Meßergebnis verfälscht. Daher ist es erforderlich, den Luftmassensensor in regelmäßigen Zeitabständen oder bei Bedarf auszuwechseln. For determining the load of an internal combustion engine, in particular one Otto motor of a passenger car, usually becomes by means of an air mass sensor through the throttle opening measured the throttle body passing air mass. However, the required air mass sensor, HFH, is technically complex and especially in a mass production of throttle body a not insignificant Cost factor. In addition, in case of contamination of the air mass sensor falsifies the measurement result. Therefore, it is necessary the air mass sensor at regular intervals or replace if necessary.

Ein Drosselklappenstutzen der eingangs genannten Art ist aus der JP-A-4066736 bekannt. Dabei ragt der Drucksensor direkt in die Drosselöffnung hinein. Durch Verunreinigung des Drucksensors kann es zu Verfälschungen des Meßergebnisses des Drucksensors kommen, so daß die auf diesem Meßergebnis beruhenden Werte der ermittelten Luftmasse verfälscht sind.A throttle body of the type mentioned is out JP-A-4066736. The pressure sensor protrudes directly into the throttle opening. By contamination of the pressure sensor can it to distortions of the measurement result of the Pressure sensor come, so that based on this measurement result Values of the determined air mass are falsified.

Aus der US-A-5711271 ist eine Drosselvorrichtung für eine Brennkraftmaschine bekannt, die eine schwenkbar antreibbare Drosselklappe in der von einem gasförmigen Medium durchströmbaren Drosselöffnung aufweist. Die Drosselklappe ist durch einen Bypass für eine Leerlaufregelung umgehbar, in dem ein Drucksensor angeordnet ist. Der Bypass ist zur Leerlaufregelung durch ein Leerlaufventil mehr oder weniger absperrbar.From US-A-5711271 is a throttle device for a Internal combustion engine, which has a pivotally drivable Throttle in the permeable by a gaseous medium Has throttle opening. The throttle is through bypassing a bypass for idle control, in which a Pressure sensor is arranged. The bypass is for idle control by an idle valve more or less lockable.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Drosselklappenstutzen der oben genannten Art anzugeben, der mit besonders einfachen Mitteln auch über besonders lange Zeiträume hinweg eine besonders zuverlässige Ermittlung der durch die Drosselöffnung hindurchtretenden Luftmasse zuverlässig gewährleistet.The invention is therefore based on the object, a throttle body of the type mentioned above, with especially simple means even over particularly long periods A particularly reliable determination of the by the throttle opening passing air mass reliable guaranteed.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der zweite für den Druck P des gasförmigen Mediums vorgesehene Sensor in dem Gehäuse angeordnet und über einen in dem Gehäuse angeordneten Kanal mit der Drosselöffnung verbunden ist. Eine Anordnung des Drucksensors in dem Gehäuse schützt den Drucksensor besonders zuverlässig vor Verschmutzungen.This object is achieved in that the second provided for the pressure P of the gaseous medium Sensor disposed in the housing and via a in the housing arranged channel is connected to the throttle opening. An arrangement of the pressure sensor in the housing protects the Pressure sensor particularly reliable against contamination.

Die Erfindung geht dabei von der Überlegung aus, daß ein Luftmassensensor für einen Drosselklappenstutzen - der auch über besonders lange Zeiträume hinweg besonders zuverlässige Meßergebnisse gewährleistet - vor Verunreinigungen geschützt sein sollte. Dies läßt sich jedoch insbesondere in einem Ansaugluftkanal eines Personenkraftwagens nur mit besonders hohem Aufwand durch den Einbau eines aufwendigen Filtersystems gewährleisten. Alternativ zur direkten Luftmassenmessung gibt es jedoch die Möglichkeit, indirekt die durch die Drosselöffnung des Drosselklappenstutzens hindurchtretende Luftmasse zu bestimmen. Hierzu bieten sich ein Temperatur- und ein Drucksensor an. Aus der Temperatur der Luft und dem Druck der Luft läßt sich zuverlässig die durch die Drosselöffnung hindurchtretende Luftmasse ermitteln. Für die Messung von Druck und Temperatur des durch die Drosselöffnung hindurchtretenden Luftstromes sind außerdem Standardsensoren verwendbar, die auch bei Massenproduktionen keinen erheblichen Beitrag zu den Kosten liefern. Um zuverlässig eine Messung des Drucks des durch die Drosselöffnung hindurchtretenden Luftstromes zu gewährleisten, ist hierzu der Drucksensor in Strömungsrichtung hinter der Drosselklappe und der Temperatursensor in Strömungsrichtung vor der Drosselklappe angeordnet.The invention is based on the consideration that a Air mass sensor for a throttle body - the same Particularly reliable over long periods of time Measurement results ensured - protected against contamination should be. However, this can be done especially in an intake air duct of a passenger car only with particularly high Effort through the installation of a complex filter system guarantee. Alternative to direct air mass measurement However, it is possible indirectly through the throttle opening the throttle body passing air mass determine. For this purpose, a temperature and a pressure sensor are available at. From the temperature of the air and the pressure of the air can reliably be passed through the throttle opening Determine air mass. For the measurement of pressure and Temperature of passing through the throttle opening Airflow are also suitable for standard sensors that even in mass production no significant contribution to the Deliver costs. To reliably measure the pressure of the to ensure air flow passing through the throttle opening, this is the pressure sensor in the flow direction behind the throttle and the temperature sensor in the flow direction arranged in front of the throttle.

Vorteilhafterweise ist der erste für die Temperatur T des gasförmigen Mediums vorgesehene Sensor an dem Gehäuse des Drosselklappenstutzens angeordnet und ragt zumindest teilweise in die Drosselöffnung hinein. Eine Integration des Temperatursensors in das Gehäuse des Drosselklappenstutzens ermöglicht eine vormontage des Temperatursensors in dem Gehäuse des Drosselklappenstutzens, so daß der Temperatursensor dann gemeinsam mit dem Gehäuse des Drosselklappenstutzens zwischen der Eingangsleitung und der Ausgangsleitung anzuordnen ist. Hierdurch ist der für den Drosselklappenstutzen und die Montage des Temperatursensors erforderliche Aufwand besonders gering.Advantageously, the first for the temperature T of gaseous medium sensor provided on the housing of the Throttle body arranged and protrudes at least partially into the throttle opening. An integration of the temperature sensor in the housing of the throttle body allows a preassembly of the temperature sensor in the housing the throttle body, so that the temperature sensor then together with the housing of the throttle body between the input line and the output line is to be arranged. This is the throttle for the throttle body and the assembly the temperature sensor required effort especially low.

Vorteilhafterweise ist das Gehäuse von einem Gehäusedeckel verschließbar, wobei in dem Gehäusedeckel eine Elektronik für den ersten für die Temperatur T des gasförmigen Mediums vorgesehenen Sensors und den zweiten für den Druck P des gasförmigen Mediums vorgesehenen Sensors angeordnet ist. Weist das Gehäuse eine Elektronik für die beiden Sensoren auf, so sind die Signale der Sensoren besonders zuverlässig aufgrund des kurzen Weges zwischen den Sensoren und der Elektronik an die Elektronik übertragbar, wodurch Fehler aufgrund von Signal-übermittlungen oder Störungen in den Übertragungsleitungen besonders zuverlässig vermieden sind.Advantageously, the housing is of a housing cover closed, wherein in the housing cover electronics for the first provided for the temperature T of the gaseous medium Sensors and the second for the pressure P of the gaseous Mediums provided sensor is arranged. Does that know Housing electronics for the two sensors on, so are the signals of the sensors are particularly reliable due to the short path between the sensors and the electronics to the Electronics transferable, eliminating errors due to signal transmissions or disturbances in the transmission lines are avoided particularly reliable.

Vorteilhafterweise umfaßt die Elektronik auch die Steuerung des Stellantriebs. Weiterhin ist vorteilhafterweise die Drosselklappenwelle mit einer Positionserfassungseinrichtung verbunden, die über die Elektronik auslesbar ist. In der Elektronik sind also alle erfaßten Daten des Drosselklappenstutzens auslesbar und für weitere Zwecke in dem Kraftfahrzeug aufbereitbar.Advantageously, the electronics also include the controller of the actuator. Furthermore, advantageously, the throttle valve shaft connected to a position detection device, which is readable via the electronics. In electronics So are all recorded data of the throttle body readable and for further purposes in the motor vehicle reprocessed.

Vorteilhafterweise ist die Elektronik auf einer Leiterplatte angeordnet. Wird die Elektronik vor dem Einbau in das Gehäuse auf einer Leiterplatte angeordnet, insbesondere mit Hilfe von integrierten Schaltkreisen, so läßt sich die Elektronik in einem einzigen Montageschritt in das Gehäuse integrieren. Die Elektronik ist dann mit geeigneten Verbindungen sowohl an Einheiten außerhalb des Gehäuses als auch mit in oder an dem Drosselklappenstutzen angeordneten Sensoren verbindbar.Advantageously, the electronics are on a printed circuit board arranged. If the electronics in the housing before installation arranged on a printed circuit board, in particular with the aid of integrated circuits, so can the electronics in integrate into the housing in a single assembly step. The Electronics is then connected to both with suitable connections Units outside the housing as well as with in or on the throttle body arranged sensors connectable.

Vorteilhafterweise ist die Elektronik über eine Steckverbindung mit der Positionserfassungseinrichtung und dem Stellantrieb verbunden. Aufgrund der räumlichen Nähe von Positionserfassungseinrichtung und Stellantrieb läßt sich mittels eines einzelnen Bauteils eine Verbindung zwischen der Elektronik und der Positionserfassungseinrichtung einerseits und der Elektronik und dem Stellantrieb andererseits herstellen.Advantageously, the electronics via a plug connection with the position detection device and connected to the actuator. Due to the spatial Near position detection device and actuator can be by means of a single component, a connection between the electronics and the Position detection device on the one hand and the electronics and the actuator on the other hand.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, daß durch die indirekte Messung der durch den Drosselöffnung hindurchtretenden Luftmasse mit Sensoren, die besonders unanfällig gegen Verschmutzungen sind. auch über besonders lange Zeiträume hinweg besonders zuverlässig eine Messung der durch die Drosselöffnung hindurchtretenden Luftmasse beim Betrieb des Drosselklappenstutzens zuverlässig gewährleistet ist.The advantages achieved by the invention are in particular that by the indirect measurement of passing through the throttle opening Air mass with sensors that are particularly resistant to contamination are. particularly reliable over long periods of time Measurement of passing through the throttle opening air mass during operation the throttle body is reliably guaranteed.

Ein Ausführungsbeispiel der Erfindung wird anhand einer Zeichnung näher erläutert. Darin zeigen die Figuren:

Fig. 1:
schematisch einen Drosselklappenstutzen in Explosivdarstellung,
Fig. 2:
schematisch die Anordnung der Sensoren in dem Gehäuse des Drosselklappenstutzen gemäß Fig. 1 und
Fig. 3:
schematisch eine Anordnung vor Sensoren stromabwärts und stromaufwärts des Drosselklappenstutzens.
An embodiment of the invention will be explained in more detail with reference to a drawing. The figures show:
Fig. 1:
schematically a throttle body in exploded view,
Fig. 2:
schematically the arrangement of the sensors in the housing of the throttle body according to FIG. 1 and
3:
schematically an arrangement in front of sensors downstream and upstream of the throttle body.

Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Corresponding parts are in all figures with the same reference numerals Mistake.

Der Drosselklappenstutzen 10 gemäß Fig. 1 dient dazu, einem nicht dargestellten Verbraucher, beispielsweise einer Einspritzeinrichtung eines ebenfalls nicht dargestellten Kraftfahrzeugs, ein Luft- oder ein Kraftstoff-Luft-Gemisch zuzuführen, wobei mittels des Drosselklappenstutzens 10 die dem Verbraucher zuzuführende Frischgasmenge steuerbar ist. Hierzu weist der Drosselklappenstutzen 10 ein Gehäuse 12 auf, das überwiegend aus Aluminium 14 gefertigt ist. Alternativ kann das Gehäuse jedoch auch aus Kunststoff gefertigt sein. Das Gehäuse 12 umfaßt eine durchgehende Drosselöffnung 16, über die dem nicht dargestellten Verbraucher Luft- bzw. ein Kraftstoff-Luft-Gemisch zuführbar ist. Zur Einstellung des zuzuführenden Volumens des Frischgases ist auf einer Drosselklappenwelle 18 mit Hilfe von Befestigungsmitteln 20 eine Drosselklappe 22 angeordnet. Die Drosselklappenwelle 18, die Befestigungsmittel 20 sowie die Drosselklappe 22 sind in Fig. 1 in einer Explosionsdarstellung gezeigt.The throttle body 10 of FIG. 1 serves to a not shown Consumers, such as an injector one also not shown motor vehicle, an air or a fuel-air mixture supply, by means of the throttle body 10, the consumer supplied fresh gas quantity is controllable. For this purpose, the throttle body 10, a housing 12, which is made predominantly of aluminum 14 is. Alternatively, however, the housing may also be made of plastic. The Housing 12 includes a through throttle opening 16, over which not represented consumer air or a fuel-air mixture can be fed. To adjust the supplied volume of fresh gas is on a Throttle valve shaft 18 by means of fastening means 20, a throttle valve 22 arranged. The throttle shaft 18, the fastening means 20 and the throttle valve 22 are shown in Fig. 1 in an exploded view.

Eine Drehung der Drosselklappenwelle 18 bewirkt gleichzeitig eine Verschwenkung der auf der Drosselklappenwelle 18 angeordneten Drosselklappe 22. Ein Verschwenken der Drosselklappe 22 bewirkt eine Vergrößerung oder Verkleinerung der Öffnung der Drosselöffnung 16. Hierdurch ist die Menge des durch die Drosselöffnung 16 hindurchtretenden Strömungsmediums einstellbar. Mittels einer Bewegung der Drosselklappe 22 erfolgt somit eine Regulierung des Durchsatzes des Luft- bzw. Kraftstoff-Luft-Gemischs durch die Drosselöffnung 16 des Drosselklappenstutzens 10.A rotation of the throttle shaft 18 simultaneously causes a pivoting the arranged on the throttle shaft 18 throttle 22. Ein Pivoting the throttle 22 causes an increase or decrease the opening of the throttle opening 16. This is the amount of through the throttle opening 16 passing through the flow medium adjustable. through a movement of the throttle valve 22 is thus a regulation of the Throughput of the air or fuel-air mixture through the throttle opening 16 of the throttle body 10.

Die Drosselklappenwelle 18 kann mit einer nicht näher dargestellten Seilscheibe verbunden sein, die wiederum über einen Bowdenzug mit einer Einstellvorrichtung für eine Leistungsanforderung verbunden ist. Die Einstellvorrichtung kann hierbei als Gaspedal eines Kraftfahrzeugs ausgebildet sein, so daß eine Betätigung dieser Einstellvorrichtung durch den Fahrer des Kraftfahrzeugs die Drosselklappe 22 von einer Stellung minimaler Öffnung, insbesondere einer Schließstellung, bis in eine Stellung maximaler Öffnung, insbesondere eine Offenstellung gebracht werden kann, um hierdurch die Leistungsabgabe des Kraftfahrzeugs zu steuern.The throttle shaft 18 may be connected to a pulley, not shown be connected, in turn, via a Bowden cable with an adjustment for a performance request. The adjustment device can be designed as an accelerator pedal of a motor vehicle, so that a Actuation of this adjustment by the driver of the motor vehicle Throttle valve 22 from a position of minimum opening, in particular one Closed position, to a position of maximum opening, in particular a Open position can be brought to thereby the output of the To control motor vehicle.

Die in Fig. 1 gezeigte Drosselklappenwelle 18 des Drosselklappenstutzens 10 ist im Gegensatz dazu entweder in einem Teilbereich von einem Stellantrieb und ansonsten über das Gaspedal einstellbar oder aber die Drosselklappe 22 ist über den gesamten Verstellbereich von einem Stellantrieb einstellbar. Bei diesen sogenannten E-Gas oder Drive-by-wire-Systemen wird die mechanische Leistungssteuerung, beispielsweise Niederdrücken eines Gaspedals, in ein elektrisches Signal umgesetzt. Dieses Signal wird wiederum einer Steuereinheit zugeführt, die ein Ansteuersignal für den Stellantrieb erzeugt. Es gibt bei diesen Systemen im Normalbetrieb keine mechanische Kopplung zwischen dem Gaspedal und der Drosselklappe 22.The throttle shaft 18 of the throttle body 10 shown in FIG. 1 in contrast, is either in a partial area of an actuator and otherwise via the accelerator pedal adjustable or the throttle valve 22nd is adjustable over the entire adjustment range of an actuator. at These so-called E-gas or drive-by-wire systems, the mechanical Power control, such as depressing an accelerator pedal, in a implemented electrical signal. This signal in turn becomes a control unit supplied, which generates a drive signal for the actuator. There are these Systems in normal operation no mechanical coupling between the Accelerator pedal and the throttle valve 22.

Zur Verstellung der Drosselklappenwelle 18 und damit der Drosselklappe 22 weist der Drosselklappenstutzen 10 ein Antriebsgehäuse 24 auf. Das Antriebsgehäuse 24 ist einstückig mit dem Gehäuse 12 des Drosselklappenstutzens 10 ausgeführt. Das Gehäuse 12 des Drosselklappenstutzens 10 und das Antriebsgehäuse 24 können alternativ auch zweistückig ausgeführt sein. In dem Antriebsgehäuse 24 ist ein als Elektromotor ausgebildeter elektrischer Stellantrieb 26 angeordnet. Der als Elektromotor ausgebildete elektrische Stellantrieb 26 ist über ein Getriebe 28 mit der Drosselklappenwelle 18 verbunden. Die Drosselklappenwelle 18 ist also von dem als Elektromotor ausgebildeten Stellantrieb 26 verschwenkbar.For adjusting the throttle shaft 18 and thus the throttle valve 22nd the throttle body 10 has a drive housing 24. The drive housing 24 is integral with the housing 12 of the throttle body 10th executed. The housing 12 of the throttle body 10 and the drive housing 24 may alternatively be designed in two pieces. By doing Drive housing 24 is designed as an electric motor electric actuator 26 arranged. The trained as an electric motor electric actuator 26 is connected via a gear 28 to the throttle shaft 18. The Throttle valve shaft 18 is thus formed by the electric motor Actuator 26 pivotable.

Die Drosselklappe 22 ist über die Drosselklappenwelle 18 von einer Rückstellfeder 28 in eine Grundstellung zurückschwenkbar beaufschlagt. Eine Notlauffeder 30 gewährleistet weiterhin, daß auch bei einem Ausfall des als Elektromotor ausgebildeten elektrischen Stellantriebs 26 die Drosselklappe nicht vollständig geschlossen ist, so daß trotz des Ausfalls des als Elektromotor ausgebildeten Stellantriebs 26 eine wenn auch nur geringe Fahrleistung des Kraftfahrzeugs zuverlässig gewährleistet ist. Die Rückstellfeder 28 und die Notlauffeder 30 sind an einem ersten Ende 32 der Drosselklappenwelle 18 angeordnet. Das Gehäuse 12 ist an diesem Ende von einem ersten Deckel 24 verschließbar. An dem zweiten Ende 36 der Drosselklappenwelle 18 ist eine als Potentiometer ausgebildete Positionserfassungseinrichtung 38 zur Erfassung der jeweils aktuellen Position der Drosselklappenwelle 18 und damit indirekt der Drosselklappe 22 angeordnet. The throttle valve 22 is via the throttle shaft 18 of a return spring 28 acted upon zurückschwenkbar in a basic position. An emergency stop spring 30 ensures that even in case of failure of the electric motor trained electric actuator 26, the throttle valve is not complete is closed, so that despite the failure of trained as an electric motor Actuator 26 a albeit low driving performance of the motor vehicle is reliably guaranteed. The return spring 28 and the emergency spring 30 are disposed at a first end 32 of the throttle shaft 18. The housing 12 is closable at this end by a first cover 24. At the second end 36 of the throttle shaft 18 is a as Potentiometer trained position detection device 38 for detection the current position of the throttle shaft 18 and thus indirectly the Throttle valve 22 is arranged.

Die als Potentiometer ausgebildete Positionserfassungseinrichtung 38 und der als Elektromotor ausgebildete Stellantrieb 26 sind mit Hilfe einer Steckverbindung 40 an eine Leiterplatte 42 angeschlossen. Die Leiterplatte 42 ist dabei mittels einer Deckplatte 44 von dem Gehäusebereich abgetrennt, in dem das Potentiometer 38 und der als Elektromotor ausgebildete Stellantrieb 26 angeordnet sind. Die Deckplatte 44 schützt die Leiterplatte 42 zuverlässig vor Verunreinigungen, die durch den Betrieb der mechanischen Elemente in dem Drosselklappenstutzen 10 unvermeidlich sind. Auf der Leiterplatte 42 ist die Elektronik 46 für den als Elektromotor ausgebildeten Stellantrieb 26 und die als Potentiometer ausgebildete Positionserfassungseinrichtung 38 angeordnet. Die Leiterplatte 42 ist bei der Montage des Drosselklappenstutzens 10 in einem Deckel 48 anzuordnen, wobei mittels des Deckels 48 das Gehäuse 12 des Drosselklappenstutzens 10 von der dem Federsystem abgewandten Seite her verschließbar ist.The trained as a potentiometer position detection device 38 and the trained as an electric motor actuator 26 are using a connector 40 connected to a circuit board 42. The circuit board 42 is here separated by a cover plate 44 of the housing portion in which the Potentiometer 38 and designed as an electric motor actuator 26 is arranged are. The cover plate 44 reliably protects the circuit board 42 from contamination, due to the operation of the mechanical elements in the throttle body 10 are inevitable. On the circuit board 42 is the electronics 46 for the trained as an electric motor actuator 26 and as a potentiometer trained position detection device 38 is arranged. The circuit board 42 is in the assembly of the throttle body 10 in a lid 48 to be arranged, wherein by means of the lid 48, the housing 12 of the throttle body 10 closed from the spring system facing away from side is.

Um beim Betrieb des Drosselklappenstutzens 10 die durch die Drosselöffnung 16 hindurchtretende Luftmasse zu bestimmten, sind in dem Drosselklappenstutzen 10 gemäß Fig. 2 ein Temperatursensor 50 und ein Drucksensor 52 angeordnet. Der Temperatursensor ist dabei stromabwärts vor der Drosselklappe 22 und der Drucksensor 52 ist stromabwärts nach der Drosselklappe 22 an dem Gehäuse 12 des Drosselklappenstutzens 10 angeordnet. Der Temperatursensor 50 ist über eine elektrische Steckverbindung 54 mit der auf der Leiterplatte 42 angeordneten Elektronik 46 verbunden, die in Fig. 2 nicht zu sehen ist, da sie in dem Deckel 46 des Gehäuses 12 angeordnet ist. Der Temperatursensor 50 ragt in die Drosselöffnung 16 hinein. Es handelt sich hierbei um ein übliches Bauteil zur Messung von Temperatur.To the operation of the throttle body 10 through the throttle opening 16 to determine passing air mass, are in the throttle body 10, a temperature sensor 50 and a pressure sensor 52 are arranged as shown in FIG. The temperature sensor is downstream of the throttle 22 and the pressure sensor 52 is downstream of the throttle 22 at arranged the housing 12 of the throttle body 10. The temperature sensor 50 is via an electrical connector 54 with the on the circuit board 42 arranged electronics 46 connected, which can not be seen in Fig. 2 is, since it is arranged in the cover 46 of the housing 12. The temperature sensor 50 projects into the throttle opening 16. This is a common component for measuring temperature.

Der Drucksensor 52 ist in dem Gehäuse 12 des Drosselklappenstutzens 10 stromabwärts nach der Drosselklappe 22 angeordnet. Der Drucksensor 52 ist ebenfalls mittels einer elektrischen Steckverbindung 56 mit der auf der Leiterplatte 42 angeordneten Elektronik 48 verbunden, was ebenfalls in Fig. 2 nicht näher dargestellt ist. Der Drucksensor 52 ist über einen in den Gehäuse 12 angeordneten Kanal 58 mit der Drosselöffnung verbunden. The pressure sensor 52 is in the housing 12 of the throttle body 10th downstream of the throttle valve 22 is arranged. The pressure sensor 52 is also by means of an electrical connector 56 with the on the circuit board 42 arranged electronics 48 connected, which is also not in Fig. 2 is shown in more detail. The pressure sensor 52 is arranged via a in the housing 12 Channel 58 connected to the throttle opening.

Bei einer nicht zur Erfindung gehörende Ausführung können der Temperatursensor 50 und der Drucksensor 52 gemäß Fig. 3 in Leitungen angeordnet sein, an die der Drosselklappenstutzen 10 angeschlossen ist. Fig. 3 zeigt eine Eingangsleitung 60, an die der Drosselklappenstutzen 10 eingangsseitig angeschlossen ist und eine Ausgangsleitung 62, an die der Drosselklappenstutzen 10 ausgangsseitig angeschlossen ist. Schematisch ist hierbei der Drosselklappenstutzen 10 dargestellt. Der Drosselklappenstutzen ist also gemäß Fig. 3 eingangsseitig an eine Luftzuführungsleitung als Eingangsleitung 60 und ausgangsseitig an eine Ausgangsleitung 62, die als Druckleitung ausgebildet ist, angeschlossen. Gemäß Fig. 3 ist der Temperatursensor 50 in der Eingangsleitung 60 und der Drucksensor 52 in der Ausgangsleitung 62 angeordnet.In an embodiment not belonging to the invention, the temperature sensor 50 and the pressure sensor 52 3 may be arranged in lines to which the throttle body 10 is connected. Fig. 3 shows an input line 60, to which the Throttle body 10 is connected on the input side and an output line 62, to which the throttle body 10 is connected on the output side is. Schematically, the throttle body 10 is shown here. The throttle body is thus according to FIG. 3 on the input side to an air supply line as input line 60 and the output side to an output line 62, which is designed as a pressure line connected. According to Fig. 3 is the temperature sensor 50 in the input line 60 and the pressure sensor 52 arranged in the output line 62.

Beim Betrieb des Drosselklappenstutzens 10 wird der Drosselöffnung 16 des Drosselklappenstutzens 10 gasförmiges Medium 66 zugeführt, das in diesem Ausführungsbeispiel als Luft ausgebildet ist. Das gasförmige Medium 66 weist vor der Drosselklappe 22 des Drosselklappenstutzens 10 eine bestimmte Temperatur T auf, die mittels des Temperatursensors 50 erfaßbar ist. Stromabwärts nach dem der Drosselklappe 22 des Drosselklappenstutzens 10 weist die Luft einen bestimmten Druck auf, der mittels des Drucksensors 52 erfaßbar ist. Die in bestimmten Zeitabständen erfaßten Druck- und/oder Temperaturwerte sind in nicht näher dargestellter Weise der auf der Leiterplatte 42 angeordneten Elektronik 46 des Drosselklappenstutzens 10 zuführbar. Die Elektronik 46 der Leiterplatte 42 weist geeignete Auswerteelektronik auf, mittels derer aus den erfaßten Druck- und/oder Temperaturdaten, die durch die Drosselöffnung 16 in durchtretende Luftmasse bestimmbar ist. Zusätzlich weist die Elektronik weitere Module auf, mittels derer die jeweils aktuell ermittelte Luftmasse mit anderen Informationen des Kraftfahrzeugs verbindbar und auswertbar ist.During operation of the throttle body 10, the throttle opening 16 of the Throttle valve 10 gaseous medium 66 supplied in this Embodiment is designed as air. The gaseous medium 66 has in front of the throttle valve 22 of the throttle body 10, a certain temperature T, which can be detected by means of the temperature sensor 50. downstream after the throttle 22 of the throttle body 10, the air a certain pressure which can be detected by means of the pressure sensor 52. The detected at certain intervals pressure and / or temperature values in a manner not shown arranged on the circuit board 42 electronics 46 of the throttle body 10 can be fed. The electronics 46 of the Printed circuit board 42 has suitable evaluation electronics, by means of which of the detected pressure and / or temperature data passing through the throttle opening 16 in permeating air mass can be determined. In addition, the electronics have more Modules, by means of which the currently determined air mass with others Information of the motor vehicle can be connected and evaluated.

Durch die indirekte Messung von Temperatur und Druck des durch die Drosselöffnung 16 des Drosselklappenstutzens 10 hindurchtretende Luftmasse ist besonders zuverlässig gewährleistet, daß auch in besonders großen Zeitintervallen zuverlässig die durch die Drosselöffnung 16 hindurchtretende Luftmasse ermittelbar ist.By indirectly measuring the temperature and pressure of the throttle opening 16 of the throttle body 10 is passing air mass Ensures particularly reliable that even in very large time intervals reliably the air mass passing through the throttle opening 16 can be determined.

Claims (7)

  1. Throttle valve assembly (10) with a housing (12) which has a throttle orifice (16) through which a gaseous medium (66) is capable of flowing in a main flow direction (64), a throttle valve (22) fastened pivotably on a throttle valve shaft (18) being arranged in a throttle orifice (16), the throttle valve shaft (18) being pivotable by an actuating drive (26), the throttle orifice (16) being connected on the inlet side to an inlet line (60) and on the outlet side to an outlet line (62), and a first temperature sensor (50) for the temperature T of the gaseous medium (66) being arranged upstream of the throttle valve (22) and a second pressure sensor (52) for the pressure P of the gaseous medium (66) being arranged downstream of the throttle valve (22), characterized in that the second pressure sensor (54) provided for the pressure P of the gaseous medium (66) is arranged in the housing (12) and is connected to the throttle orifice (16) via a duct (58) arranged in the housing (12).
  2. Throttle valve assembly (10) according to Claim 1, characterized in that the first temperature sensor (50) provided for the temperature T of the gaseous medium (66) is arranged on the housing (12) and projects at least partially into the throttle orifice (16).
  3. Throttle valve assembly (10) according to one of Claims 1 and 2, characterized in that the housing (12) can be closed by a housing cover (48), electronics (46) for the first temperature sensor (50) and for the second pressure sensor (52) being arranged in the housing cover (48).
  4. Throttle valve assembly (10) according to Claim 3, characterized in that the electronics (46) also comprise the control of the actuating drive (26).
  5. Throttle valve assembly (10) according to one of Claims 1 to 4, characterized in that the throttle valve shaft (18) is connected to a position detection device (38) which can be read out via the electronics (46).
  6. Throttle valve assembly (10) according to one of Claims 4 and 5, characterized in that the electronics (46) are arranged on a circuit board (42).
  7. Throttle valve assembly (10) according to one of Claims 4 to 6, characterized in that the electronics (10) are connected to the position detection device (38) and to the actuating drive (26) via a plug connection.
EP02752977A 2001-07-12 2002-06-21 Throttle valve housing Expired - Fee Related EP1404958B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10133294 2001-07-12
DE10133294A DE10133294A1 (en) 2001-07-12 2001-07-12 Choke flap port for internal combustion engine has temperature sensor for gaseous medium and pressure sensor for gaseous medium upstream and downstream of choke flap respectively
PCT/DE2002/002282 WO2003006806A1 (en) 2001-07-12 2002-06-21 Throttle valve housing

Publications (2)

Publication Number Publication Date
EP1404958A1 EP1404958A1 (en) 2004-04-07
EP1404958B1 true EP1404958B1 (en) 2005-01-19

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EP02752977A Expired - Fee Related EP1404958B1 (en) 2001-07-12 2002-06-21 Throttle valve housing

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US (1) US20040149946A1 (en)
EP (1) EP1404958B1 (en)
BR (1) BR0210957A (en)
CA (1) CA2453426A1 (en)
DE (2) DE10133294A1 (en)
WO (1) WO2003006806A1 (en)

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DE50202057D1 (en) 2005-02-24
DE10133294A1 (en) 2003-01-23
CA2453426A1 (en) 2003-01-23
EP1404958A1 (en) 2004-04-07
BR0210957A (en) 2004-06-08
WO2003006806A1 (en) 2003-01-23
US20040149946A1 (en) 2004-08-05

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