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DE4311081A1 - Control flap - Google Patents

Control flap

Info

Publication number
DE4311081A1
DE4311081A1 DE4311081A DE4311081A DE4311081A1 DE 4311081 A1 DE4311081 A1 DE 4311081A1 DE 4311081 A DE4311081 A DE 4311081A DE 4311081 A DE4311081 A DE 4311081A DE 4311081 A1 DE4311081 A1 DE 4311081A1
Authority
DE
Germany
Prior art keywords
section
control valve
intake pipe
cross
control flap
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.)
Withdrawn
Application number
DE4311081A
Other languages
German (de)
Inventor
Matthias Zentgraf
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
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 DE4311081A priority Critical patent/DE4311081A1/en
Publication of DE4311081A1 publication Critical patent/DE4311081A1/en
Withdrawn legal-status Critical Current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
    • F02D9/1005—Details of the flap
    • F02D9/101—Special flap shapes, ribs, bores or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F02B27/0226—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the means generating the charging effect
    • F02B27/0268—Valves
    • F02B27/0273—Flap valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F02B27/0205—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the charging effect
    • F02B27/0215—Oscillating pipe charging, i.e. variable intake pipe length charging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

In order to adjust the intake pipe length in internal combustion engines, it being possible to open or close a second inlet cross-section (3), laterally arranged between beginning and end of the intake pipe (2), by swivelling a control flap (1), a control flap (1) is proposed which is characterised in that its external contour and its cross-section for the open and closed position are aerodynamically optimised. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Steuerklappe zur Verän­ derung der Ansaugrohrlänge bei Brennkraftmaschinen, wobei durch Schwenken der Steuerklappe ein zwischen Anfang und Ende des Ansaugrohres seitlich angeordneter zweiter Einlaß­ querschnitt geöffnet bzw. geschlossen wird.The invention relates to a control valve for Verän Change the intake pipe length in internal combustion engines, wherein by swiveling the control flap one between the beginning and End of the intake pipe laterally arranged second inlet cross section is opened or closed.

Der Drehmomentverlauf und die Leistung einer Brennkraftma­ schine sind in gewissem Umfang von der Länge der Ansaugrohre abhängig. Bei niedrigeren Drehzahlen ergeben lange Ansaugrohre optimale Verhältnisse, bei hohen Drehzahlen kurze. Da eine an sich ideale kontinuierliche Anpassung der Ansaugrohrlänge an die Drehzahl mit vertretbarem Aufwand nicht realisierbar ist, hat man Ansauggehäuse mit vergleichweise langen Ansaugrohren entwickelt, bei denen auf etwa halber Länge zwischen Einlaß- und Auslaßende ein seitlich angeordneter zweiter Einlaßquerschnitt vorgesehen ist, der mittels einer schwenkbaren Steuerklappe wie der Ansaugstutzen einer Brennkraftmaschine durch eine Drosselklappe wahlweise ge­ schlossen oder geöffnet werden kann.The torque curve and the performance of an internal combustion engine are to some extent the length of the machine Intake pipes dependent. Result at lower speeds long intake pipes optimal conditions, at high Speeds short. Because an ideal continuous in itself Adjustment of the intake pipe length to the speed with reasonable effort is not feasible, one has Intake housing with comparatively long intake pipes developed in which about half the length between Inlet and outlet ends of a laterally arranged second Inlet cross section is provided by means of a swiveling control flap like the intake manifold Internal combustion engine optionally by a throttle valve can be closed or opened.

Derartige Steuerklappen werden bisher wie Drosselklappen als flächiges Bauteil aus einem gestanzten Blechabschnitt hergestellt und es wird der zweite Einlaßquerschnitt so ge­ formt, daß er mit einer derartigen Steuerklappe gut ver­ schließbar ist. Das geht nicht ohne strömungstechnische Nachteile für den Betriebszustand "Steuerklappe geschlos­ sen".Such control flaps have so far been used as throttle valves as a flat component from a stamped sheet metal section manufactured and it is the second inlet cross-section so ge  forms that he ver ver well with such a control valve is closable. This is not possible without fluidic technology Disadvantages for the operating state "control flap closed sen ".

Derartige Bauformen sind aber auch für den Betriebszustand "Steuerklappe offen" mit erheblichen Strömungsverlusten in­ folge Turbulenzen und unstetigen Änderungen der Strömungs­ richtung verbunden.Such designs are also for the operating state "Control flap open" with considerable flow losses in follow turbulence and inconsistent changes in flow connected direction.

Der Erfindung liegt die Aufgabe zugrunde, die vorgenannten Nachteile zu vermeiden und für den eingangs genannten Zweck eine Steuerklappe vorzuschlagen, mit der eine Umstellung der Ansaugrohrlänge möglich ist, ohne daß die damit er­ reichbare Leistungssteigerung der Brennkraftmaschine durch Strömungsverluste im Ansaugsystem nennenswert beeinträch­ tigt wird.The invention has for its object the aforementioned To avoid disadvantages and for the purpose mentioned propose a control flap with which a changeover the intake pipe length is possible without the he achievable increase in performance of the internal combustion engine Flow losses in the intake system significantly impaired is done.

Diese Aufgabe wird dadurch gelöst, daß die äußere Kontur und der Querschnitt der Steuerklappe strömungstechnisch sowohl für die öffnungs- wie für die Schließstellung opti­ miert sind. Dazu wird die Steuerklappe zweckmäßigerweise so geformt, daß sie in geschlossenem Zustand im wesentlichen den im Bereich des zweiten Einlaßquerschnitts fehlenden Wandabschnitt des Ansaugrohres ersetzt.This object is achieved in that the outer contour and the cross-section of the control valve in terms of flow both for the open and the closed position opti are lubricated. For this purpose, the control flap is expediently so shaped to be essentially closed those missing in the area of the second inlet cross-section Wall section of the intake pipe replaced.

Die Steuerklappe ist außerdem so zu formen, daß ihr Strö­ mungswiderstand in geöffnetem Zustand minimal ist und daß sie als Strömungsleiteinrichtung wirkt. Andere vorteilhafte Ausgestaltungen des Erfindungsgedankens sind in den Un­ teransprüchen 4 und 5 beschrieben.The control flap must also be shaped so that its flow resistance in the open state is minimal and that it acts as a flow guide. Other beneficial Embodiments of the inventive concept are in the Un claims 4 and 5 described.

Weitere Einzelheiten werden anhand des in Fig. 1 darge­ stellten Ausführungsbeispiels näher erläutert. Further details will be explained with reference to the embodiment shown in FIG. 1 Darge.

Fig. 1 zeigt einen Teil eines Ansaugrohres 2 im Schnitt zwischen dem eintrittsseitigen Querschnitt 6 und dem aus­ trittsseitigen Querschnitt 7 des Ansaugrohres 2 ist seit­ lich ein zweiter Einlaßquerschnitt 3 ausgebildet, der durch eine schwenkbare Steuerklappe 1 verschließbar ist, die je drehfest mit einer sich senkrecht zur Zeichenebene erstrec­ kenden Stellwelle 4 verbunden ist. An den Einlaßquerschnitt 3 schließt sich ein Einlaßstutzen 5 an, der im wesentlichen den gleichen Querschnitt wie das Ansaugrohr 2 hat und zu einer Vorkammer im Ansauggehäuse hin geöffnet ist. Fig. 1 shows a part of an intake pipe 2 in section between the inlet-side cross-section 6 and from the outlet-side cross-section 7 of the intake pipe 2 a second inlet cross-section 3 is formed since Lich, which can be closed by a pivotable control flap 1 , each rotatably with a vertical to the drawing level erstrec kenden control shaft 4 is connected. At the inlet cross section 3 there is an inlet connection 5 , which has essentially the same cross section as the intake pipe 2 and is open to a prechamber in the intake housing.

Die Steuerklappe 1 ist im wesentlichen dem im Einlaßquer­ schnitt 3 fehlenden Wandabschnitt des Ansaugrohres 2 nach­ gebildet, so daß die Rohrinnenwand bei geschlossener Steuerklappe 1 keine nennenswerten Unstetigkeiten aufweist.The control valve 1 is essentially the inlet cross section 3 in the absence of wall portion of the intake pipe 2 after formed, so that the tube inner wall has no significant discontinuities in the closed control valve. 1

Die Steuerklappe 1 selbst hat einen Querschnitt ähnlich ei­ nem Trägflügelprofil, womit in geöffnetem Zustand der Strö­ mungswiderstand auf ein Minimum reduziert und gleichzeitig eine Strömungsleitwirkung erreicht wird.The control flap 1 itself has a cross section similar to a wing profile, so that in the open state the flow resistance is reduced to a minimum and at the same time a flow guiding effect is achieved.

Claims (5)

1. Steuerklappe zur Veränderung der Ansaugrohrlänge bei Brennkraftmaschinen, wobei durch Schwenken der Steuerklappe (1) ein zwischen Anfang und Ende des Ansaugrohres (2) seit­ lich angeordneter zweiter Einlaßquerschnitt (3) geöffnet bzw. geschlossen wird, dadurch gekennzeichnet, daß die äu­ ßere Kontur und der Querschnitt der Steuerklappe (1) für die Öffnungs- und Schließstellung strömungstechnisch opti­ miert sind.1. Control flap for changing the intake pipe length in internal combustion engines, wherein by pivoting the control flap ( 1 ) between the beginning and end of the intake pipe ( 2 ) since Lich arranged second inlet cross-section ( 3 ) is opened or closed, characterized in that the outer contour and the cross section of the control flap ( 1 ) for the opening and closing position are optimized in terms of flow. 2. Steuerklappe nach Anspruch 1, dadurch gekennzeichnet, daß sie rohrinnenseitig in geschlossenem Zustand im wesent­ lichen den im Bereich des zweiten Einlaßquerschnitts (3) fehlenden Wandabschnitt des Ansaugrohres (2) ersetzt.2. Control valve according to claim 1, characterized in that it replaces the inside of the pipe in the closed state in the union union in the region of the second inlet cross-section ( 3 ) missing wall section of the intake pipe ( 2 ). 3. Steuerklappe nach Anspruch 2, dadurch gekennzeichnet, daß sie so geformt ist, daß ihr Strömungswiderstand in ge­ öffnetem Zustand minimal ist und daß sie als Strömungsleit­ einrichtung wirkt. 3. Control valve according to claim 2, characterized in that it is shaped so that its flow resistance in ge opened state is minimal and that it acts as a flow guide furnishing works.   4. Steuerklappe nach Anspruch 3, dadurch gekennzeichnet, daß sie drehfest derart mit einer Stellwelle (4) verbunden ist, daß die Stellwelle, die Befestigungsbereiche und die Befestigungsmittel im wesentlichen innerhalb des strömungstechnisch ausgelegten Querschnitts der Steuer­ klappe (1) liegen.4. Control valve according to claim 3, characterized in that it is rotatably connected to an actuating shaft ( 4 ) in such a way that the actuating shaft, the fastening areas and the fastening means are essentially within the fluidically designed cross section of the control valve ( 1 ). 5. Steuerklappe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sie aus einem Gußteil hergestellt ist.5. Control valve according to one of claims 1 to 4, characterized characterized in that it is made from a cast part.
DE4311081A 1993-04-03 1993-04-03 Control flap Withdrawn DE4311081A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4311081A DE4311081A1 (en) 1993-04-03 1993-04-03 Control flap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4311081A DE4311081A1 (en) 1993-04-03 1993-04-03 Control flap

Publications (1)

Publication Number Publication Date
DE4311081A1 true DE4311081A1 (en) 1994-10-06

Family

ID=6484730

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4311081A Withdrawn DE4311081A1 (en) 1993-04-03 1993-04-03 Control flap

Country Status (1)

Country Link
DE (1) DE4311081A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0942862A1 (en) * 1996-12-04 1999-09-22 Diesel Engine Retarders, Inc. Low restriction exhaust brake
EP1764493A2 (en) * 2005-09-20 2007-03-21 Mahle International GmbH Fresh air supply system for an internal combustion engine
DE10140778B4 (en) * 2001-08-20 2014-08-28 Mahle Filtersysteme Gmbh Intake system of an internal combustion engine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0942862A1 (en) * 1996-12-04 1999-09-22 Diesel Engine Retarders, Inc. Low restriction exhaust brake
EP0942862A4 (en) * 1996-12-04 2000-11-15 Diesel Engine Retarders Inc Low restriction exhaust brake
DE10140778B4 (en) * 2001-08-20 2014-08-28 Mahle Filtersysteme Gmbh Intake system of an internal combustion engine
EP1764493A2 (en) * 2005-09-20 2007-03-21 Mahle International GmbH Fresh air supply system for an internal combustion engine
EP1764492A2 (en) * 2005-09-20 2007-03-21 Mahle International GmbH Fresh air supply system for an internal combustion engine
EP1764492A3 (en) * 2005-09-20 2010-06-16 Mahle International GmbH Fresh air supply system for an internal combustion engine
EP1764493A3 (en) * 2005-09-20 2010-07-07 Mahle International GmbH Fresh air supply system for an internal combustion engine
EP1764492B2 (en) † 2005-09-20 2016-01-27 Mahle International GmbH Fresh air supply system for an internal combustion engine

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8127 New person/name/address of the applicant

Owner name: MANNESMANN VDO AG, 60326 FRANKFURT, DE

8127 New person/name/address of the applicant

Owner name: SIEMENS AG, 80333 MUENCHEN, DE

8139 Disposal/non-payment of the annual fee