DE19622378A1 - Throttle valve connection for vehicle engine with throttle valve adjustable in duct - Google Patents

Throttle valve connection for vehicle engine with throttle valve adjustable in duct

Info

Publication number
DE19622378A1
DE19622378A1 DE1996122378 DE19622378A DE19622378A1 DE 19622378 A1 DE19622378 A1 DE 19622378A1 DE 1996122378 DE1996122378 DE 1996122378 DE 19622378 A DE19622378 A DE 19622378A DE 19622378 A1 DE19622378 A1 DE 19622378A1
Authority
DE
Germany
Prior art keywords
throttle valve
valve
duct
throttle
venturi tube
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.)
Ceased
Application number
DE1996122378
Other languages
German (de)
Inventor
Michael Haede
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
Priority to DE1996122378 priority Critical patent/DE19622378A1/en
Publication of DE19622378A1 publication Critical patent/DE19622378A1/en
Ceased legal-status Critical Current

Links

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
    • F02D9/1035—Details of the valve housing
    • F02D9/1055—Details of the valve housing having a fluid by-pass
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10118—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements with variable cross-sections of intake ducts along their length; Venturis; Diffusers
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10229—Fluid connections to the air intake system; their arrangement of pipes, valves or the like the intake system acting as a vacuum or overpressure source for auxiliary devices, e.g. brake systems; Vacuum chambers
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10255—Arrangements of valves; Multi-way valves
    • 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
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics

Landscapes

  • 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)

Abstract

The throttle valve connection has a throttle valve (2) adjustable in a duct (3), and a connection for a vacuum unit (7), esp. for a brake intensifier or a steering aid. The duct (3) has a bypass duct (5) having a venturi tube (6), bridging the throttle valve (2). The vacuum unit (7) is connected at the input section of the venturi tube (6), for producing a suction. The bypass duct (5) in the idling operation mode of the IC engine seen by a valve (8) arranged in the flow direction before the venturi tube (6) is blockable. The control of the valve (8) is coupled with the movement of the throttle valve.

Description

Die Erfindung betrifft einen Drosselklappenstutzen für eine Brennkraftmaschine eines Kraftfahrzeugs mit einer in einem Kanal verstellbaren Drosselklappe und einem An­ schluß für eine Unterdruckeinrichtung, insbesondere für einen Bremskraftverstärker oder eine Lenkhilfe.The invention relates to a throttle valve assembly for an internal combustion engine of a motor vehicle with a a channel adjustable throttle valve and an conclusion for a vacuum device, in particular for a brake booster or steering aid.

Solche Drosselklappenstutzen werden in Brennkraftmaschi­ nen heutiger Kraftfahrzeuge vielfach eingesetzt und sind damit bekannt. Der Drosselklappenstutzen ist zur Dosie­ rung der der Brennkraftmaschine zuzuführenden Verbren­ nungsluft mittels der Drosselklappe zwischen einem Luft­ filter und der Brennkraftmaschine angeordnet. Der An­ schluß der Unterdruckeinrichtung an den Kanal befindet sich zwischen der Drosselklappe und der Brennkraftma­ schine. Hierdurch wird in der Unterdruckeinrichtung ein statischer Unterdruck erzeugt.Such throttle body are in internal combustion engines of today's motor vehicles and are widely used known with it. The throttle valve neck is for Dosie tion of the combustion to be supplied to the internal combustion engine air between the air by means of the throttle valve filter and the internal combustion engine. The An conclusion of the vacuum device is located on the channel between the throttle valve and the internal combustion engine seem. As a result, a vacuum device static negative pressure is generated.

Nachteilig bei dem bekannten Drosselklappenstutzen ist, daß der Unterdruck an der Unterdruckeinrichtung sehr stark mit der Stellung der Drosselklappe schwankt. Bei­ spielsweise ist bei vollständig geöffneter Drosselklappe an dem Anschluß für die Unterdruckeinrichtung nur ein sehr geringer Unterdruck vorhanden. Wenn die geöffnete Drosselklappe anschließend schlagartig geschlossen wird, steigt der Unterdruck an dem Anschluß der Unterdruckein­ richtung sprunghaft an.A disadvantage of the known throttle body is that the vacuum on the vacuum device very much  fluctuates greatly with the position of the throttle valve. At example is with the throttle fully open only one at the connection for the vacuum device very low vacuum present. If the open Throttle valve is then closed suddenly, the negative pressure increases at the connection of the negative pressure direction in leaps and bounds.

Der Erfindung liegt das Problem zugrunde, einen Drossel­ klappenstutzen der eingangs genannten Art so zu gestal­ ten, daß ein nahezu konstanter Unterdruck an der Unter­ druckeinrichtung erzeugt wird.The invention is based on the problem of a choke flap sockets of the type mentioned in this way that an almost constant vacuum at the vacuum printing device is generated.

Dieses Problem wird erfindungsgemäß dadurch gelöst, daß der Kanal einen die Drosselklappe überbrückenden, ein Venturirohr aufweisenden Bypasskanal hat und die Unter­ druckeinrichtung zur Erzeugung eines Unterdrucks an dem Eingangsbereich des Venturirohrs angeschlossen ist.This problem is solved according to the invention in that the channel a one bridging the throttle valve Venturi tube having bypass channel and the sub printing device for generating a vacuum on the Entrance area of the Venturi tube is connected.

Durch diese Gestaltung strömt eine geringe Menge Verbren­ nungsluft durch den Bypasskanal und erzeugt im Eingangs­ bereich des Venturirohrs einen nahezu konstanten Unter­ druck. Hierdurch wird die an dieser Stelle angeschlossene Unterdruckeinrichtung in nahezu jedem Lastbereich mit ei­ nem konstanten Unterdruck versorgt. Da die Drosselklappe auch in einer vollständig geöffneten Stellung der Ver­ brennungsluft in dem Kanal einen Widerstand entgegen­ setzt, gelangt in den Bypasskanal eine geringe Menge Ver­ brennungsluft, die ausreicht, um einen Unterdruck an der Unterdruckeinrichtung zu erzeugen. Hierbei ist der Unter­ druck bei vollständig geöffneter Drosselklappe stärker als der mit dem bekannten Drosselklappenstutzen erzeugte Unterdruck.With this design, a small amount of burning flows air through the bypass duct and generated in the entrance area of the venturi tube has an almost constant sub pressure. This will connect the one connected at this point Vacuum device in almost every load range with egg supplied with a constant negative pressure. Because the throttle also in a fully open position of the ver resistance to combustion air in the duct a small amount of Ver gets into the bypass channel combustion air that is sufficient to create a vacuum at the Generate vacuum device. Here is the sub pressure stronger when the throttle valve is fully open than that generated with the known throttle body Vacuum.

Bei Drosselklappen für Brennkraftmaschinen besteht häufig das Problem, den Kanal mittels der Drosselklappe im Leer­ laufbetrieb möglichst dicht zu schließen und aus der Schließstellung leicht zu öffnen. Hierzu muß die Drossel­ klappe eine exakte Lagerung und in dem Kanal eine hohe Paßgenauigkeit aufweisen. Dies führt zu einem komplizier­ ten Aufbau des Drosselklappenstutzens und einer hohen An­ zahl von Bauteilen. Im Leerlaufbetrieb der Brennkraftma­ schine durch den Bypasskanal strömende Verbrennungsluft würde dazu führen, daß sich die Probleme der Abdichtung der Drosselklappe zusätzlich erhöhen. Im Leerlaufbetrieb der Brennkraftmaschine gelangt gemäß einer vorteilhaften Weiterbildung der Erfindung keine Verbrennungsluft durch den Bypasskanal, wenn der Bypasskanal im Leerlaufbetrieb der Brennkraftmaschine von einem in Strömungsrichtung ge­ sehen vor dem Venturirohr angeordneten Ventil absperrbar ist. Im Leerlaufbetrieb der Brennkraftmaschine wird der Unterdruck an der Unterdruckeinrichtung bei geschlossenem Ventil wie bei dem bekannten Drosselklappenstutzen er­ zeugt.Throttle valves for internal combustion engines often exist the problem of the channel using the throttle valve in the empty  running operation as close as possible and from the Easy to open closed position. To do this, the throttle fold an exact storage and high in the channel Have a perfect fit. This leads to a complicated structure of the throttle valve body and a high load number of components. When the internal combustion engine is idling combustion air flowing through the bypass duct would cause the problems of sealing increase the throttle valve. In idle mode the internal combustion engine arrives according to an advantageous Development of the invention through no combustion air the bypass channel when the bypass channel is in idle mode the internal combustion engine from a ge in the direction of flow see valve located in front of the Venturi tube can be shut off is. When the internal combustion engine is idling, the Vacuum on the vacuum device when closed Valve as in the known throttle body testifies.

Das Ventil wird gemäß einer anderen vorteilhaften Weiter­ bildung der Erfindung ohne großen baulichen Aufwand ge­ steuert, wenn die Steuerung des Ventils mit der Bewegung der Drosselklappe gekoppelt ist. Durch diese Gestaltung öffnet und schließt das Ventil automatisch, wenn die Drosselklappe öffnet und schließt.The valve is according to another advantageous further education of the invention ge without great construction controls when controlling the valve with the movement the throttle valve is coupled. Through this design opens and closes the valve automatically when the Throttle valve opens and closes.

Bei einem schnellen Schließen der Drosselklappe aus ihrer vollständig geöffneten Stellung heraus könnte an der Drosselklappe ein sprunghafter Anstieg des Unterdrucks entstehen. Eine solche sprunghafte Druckschwankung läßt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung vermeiden, wenn das Ventil elektrisch schaltbar ist.With a quick closing of the throttle valve from her could be fully open at the Throttle valve a sudden increase in negative pressure arise. Such a sudden pressure fluctuation leaves according to another advantageous development of the Avoid invention if the valve is electrically switchable is.

Die Drosselklappe gestaltet sich gemäß einer anderen vor­ teilhaften Weiterbildung der Erfindung besonders kosten­ günstig, wenn die Drosselklappe aus Kunststoff gefertigt ist.The throttle valve is designed according to another partial further development of the invention particularly cost  cheap if the throttle valve is made of plastic is.

Die Erfindung läßt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips ist eine da­ von in der Zeichnung dargestellt und wird nachfolgend be­ schrieben. Diese zeigt in einer einzigen Figur eine sche­ matische Darstellung eines erfindungsgemäßen Drosselklap­ penstutzens.The invention permits numerous embodiments. For there is a further clarification of their basic principle of shown in the drawing and will be below wrote. This shows a single figure Matic representation of a throttle valve according to the invention pen sockets.

Die Zeichnung zeigt einen Drosselklappenstutzen 1 mit ei­ nem von einer Drosselklappe 2 absperrbaren Kanal 3, durch welchen Verbrennungsluft zu einer nicht dargestellten Brennkraftmaschine strömt. Die Richtung der Strömung der Verbrennungsluft ist in der Zeichnung mit Pfeilen gekenn­ zeichnet. Die Drosselklappe 2 ist auf einer von einer nicht dargestellten Stellvorrichtung, beispielsweise ei­ nem Elektromotor, schwenkbaren Welle 4 befestigt. Dieser Bereich des Kanals 3 wird von einem Bypasskanal 5 über­ brückt. In dem Bypasskanal 5 ist ein Venturirohr 6 ange­ ordnet, in dessen Eingangsbereich eine als Unterdruckdose ausgebildete Unterdruckeinrichtung 7 mündet. Der Bypass­ kanal 5 läßt sich von einem in Strömungsrichtung gesehen vor dem Venturirohr 6 angeordneten Ventil 8 schließen. Das Ventil 8 wird durch ein elektrisches Betätigungsglied 9 im Leerlaufbetrieb der Brennkraftmaschine geschlossen.The drawing shows a throttle body 1 with egg nem by a throttle valve 2 channel 3 , through which combustion air flows to an internal combustion engine, not shown. The direction of the flow of the combustion air is marked with arrows in the drawing. The throttle valve 2 is fastened on a shaft 4 which can be pivoted by an adjusting device (not shown), for example an electric motor. This area of the channel 3 is bridged by a bypass channel 5 . In the bypass duct 5 , a Venturi tube 6 is arranged, in the entrance area of which a vacuum device 7 designed as a vacuum box opens. The bypass channel 5 can be closed by a valve 8 arranged in front of the Venturi tube 6 , as seen in the flow direction. The valve 8 is closed by an electrical actuator 9 in idle mode of the internal combustion engine.

Claims (5)

1. Drosselklappenstutzen für eine Brennkraftmaschine ei­ nes Kraftfahrzeugs mit einer in einem Kanal verstellbaren Drosselklappe und einem Anschluß für eine Unterdruckein­ richtung, insbesondere für einen Bremskraftverstärker oder eine Lenkhilfe, dadurch gekennzeichnet, daß der Ka­ nal (3) einen die Drosselklappe (2) überbrückenden, ein Venturirohr (6) aufweisenden Bypasskanal (5) hat und die Unterdruckeinrichtung (7) zur Erzeugung eines Unterdrucks an dem Eingangsbereich des Venturirohrs (6) angeschlossen ist.1. throttle valve assembly for an internal combustion engine egg nes motor vehicle with an adjustable throttle valve in a channel and a connection for a Unterdruckein direction, in particular for a brake booster or steering aid, characterized in that the Ka channel ( 3 ) bridging the throttle valve ( 2 ), has a bypass channel ( 5 ) with a venturi tube ( 6 ) and the vacuum device ( 7 ) is connected to the inlet area of the venturi tube ( 6 ) for generating a vacuum. 2. Drosselklappenstutzen nach Anspruch 1, dadurch gekenn­ zeichnet, daß der Bypasskanal (5) im Leerlaufbetrieb der Brennkraftmaschine von einem in Strömungsrichtung gesehen vor dem Venturirohr (6) angeordneten Ventil (8) absperr­ bar ist.2. Throttle valve assembly according to claim 1, characterized in that the bypass channel ( 5 ) in the idle mode of the internal combustion engine from a valve in the flow direction ( 6 ) arranged valve ( 8 ) is shut-off bar. 3. Drosselklappenstutzen nach Anspruch 2, dadurch gekenn­ zeichnet, daß die Steuerung des Ventils (8) mit der Bewe­ gung der Drosselklappe (2) gekoppelt ist.3. Throttle valve assembly according to claim 2, characterized in that the control of the valve ( 8 ) with the movement of the throttle valve ( 2 ) is coupled. 4. Drosselklappenstutzen nach Anspruch 2, dadurch gekenn­ zeichnet, daß das Ventil (8) elektrisch schaltbar ist. 4. Throttle valve assembly according to claim 2, characterized in that the valve ( 8 ) is electrically switchable. 5. Drosselklappenstutzen nach zumindest einem der vorher­ gehenden Ansprüche, dadurch gekennzeichnet, daß die Dros­ selklappe (2) aus Kunststoff gefertigt ist.5. Throttle body according to at least one of the preceding claims, characterized in that the throttle valve ( 2 ) is made of plastic.
DE1996122378 1996-06-04 1996-06-04 Throttle valve connection for vehicle engine with throttle valve adjustable in duct Ceased DE19622378A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996122378 DE19622378A1 (en) 1996-06-04 1996-06-04 Throttle valve connection for vehicle engine with throttle valve adjustable in duct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996122378 DE19622378A1 (en) 1996-06-04 1996-06-04 Throttle valve connection for vehicle engine with throttle valve adjustable in duct

Publications (1)

Publication Number Publication Date
DE19622378A1 true DE19622378A1 (en) 1997-12-11

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ID=7796100

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996122378 Ceased DE19622378A1 (en) 1996-06-04 1996-06-04 Throttle valve connection for vehicle engine with throttle valve adjustable in duct

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DE (1) DE19622378A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10321090A1 (en) * 2003-05-09 2004-12-16 Alfmeier Präzision AG Vacuum system for motor vehicles, comprises component which is connected to a venturi nozzle which is arranged inside the suction pipe
DE102004021387A1 (en) * 2004-04-30 2005-11-17 Daimlerchrysler Ag Combustion engine e.g. for vehicle, has mechanical loader propelled from internal-combustion engine with intake line after loader is arranged near throttle valve and intake face of loader connects to circulating air line
DE102005031744A1 (en) * 2005-07-07 2007-01-11 GM Global Technology Operations, Inc., Detroit Device for generating negative pressure in a motor vehicle
DE102014215004A1 (en) 2014-07-30 2016-02-04 Volkswagen Aktiengesellschaft Internal combustion engine with bypass channel for boosting the negative pressure in a brake booster

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10321090A1 (en) * 2003-05-09 2004-12-16 Alfmeier Präzision AG Vacuum system for motor vehicles, comprises component which is connected to a venturi nozzle which is arranged inside the suction pipe
DE102004021387A1 (en) * 2004-04-30 2005-11-17 Daimlerchrysler Ag Combustion engine e.g. for vehicle, has mechanical loader propelled from internal-combustion engine with intake line after loader is arranged near throttle valve and intake face of loader connects to circulating air line
DE102005031744A1 (en) * 2005-07-07 2007-01-11 GM Global Technology Operations, Inc., Detroit Device for generating negative pressure in a motor vehicle
WO2007006441A1 (en) 2005-07-07 2007-01-18 Gm Global Technology Operations, Inc. Device for generating a vacuum in a motor vehicle
US8261716B2 (en) 2005-07-07 2012-09-11 GM Global Technology Operations LLC Device for generating a vacuum in a motor vehicle
DE102014215004A1 (en) 2014-07-30 2016-02-04 Volkswagen Aktiengesellschaft Internal combustion engine with bypass channel for boosting the negative pressure in a brake booster
DE102014215004B4 (en) 2014-07-30 2022-01-27 Volkswagen Aktiengesellschaft Internal combustion engine with a bypass channel for boosting the vacuum in a brake booster

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