DE4137704A1 - Air aspiration device for IC engine with length-alterable suction lines - comprises sections fixed to engine and upstream of their mouths pivotably arranged pipe curves - Google Patents

Air aspiration device for IC engine with length-alterable suction lines - comprises sections fixed to engine and upstream of their mouths pivotably arranged pipe curves

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Publication number
DE4137704A1
DE4137704A1 DE4137704A DE4137704A DE4137704A1 DE 4137704 A1 DE4137704 A1 DE 4137704A1 DE 4137704 A DE4137704 A DE 4137704A DE 4137704 A DE4137704 A DE 4137704A DE 4137704 A1 DE4137704 A1 DE 4137704A1
Authority
DE
Germany
Prior art keywords
pipe
engine
suction
elbows
curves
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Withdrawn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
DE4137704A
Other languages
German (de)
Inventor
Juergen Stoffregen
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE4137704A priority Critical patent/DE4137704A1/en
Publication of DE4137704A1 publication Critical patent/DE4137704A1/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F02B27/0231—Movable ducts, walls 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
    • F02B27/0294—Actuators or controllers therefor; Diagnosis; Calibration
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
    • 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)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

The pipe curves (6,6') are connected to a drive device. Of the curves of two adjacent suction line sections (5, 5') fixed to the engine, a first pipe curve (6) is driven by a drive shaft (9) and a second pipe curve (6) is driven by the first pipe curve. Both pipe curves (6, 6') are equipped with toothing (10, 10') for drive coupling. The pipe curves and the toothing are of one-piece construction comprising plastic injection moulding parts. The pipe curves (6, 6') between suction line sections (5, 5') fixed to the engine have pivot axes (8, 8') the pipe curves are arranged in an air intake manifold (11). USE/ADVANTAGE - For the air intake arrangement of an IC engine, involving an individual drive device for two groups of coupled pipe curves for trouble-free length alteration of the actual suction lines.

Description

Die Erfindung bezieht sich auf eine Luftansauganlage für Brennkraftmaschinen, gemäß der im Oberbegriff des Patentanspruches 1 beschriebenen Bauart.The invention relates to an air intake system for Internal combustion engines, according to the in the preamble of Claim 1 type described.

Eine derartige Luftansauganlage zeigt und beschreibt zum Beispiel die DE-A-38 20 674 für eine kombinierte Schwing- und Resonanz-Aufladung einer mehrzylindrigen Brennkraftmaschine mit gegenüberliegenden Zylindern bzw. Zylinderreihen. Hierbei sind der Längenänderung der Saugleitungen dienende Rohrkrümmer in entsprechend gekrümmt gestalteten maschinenfesten Abschnitten teleskopartig geführt, wobei für die beweglichen Rohrkrümmer bzw. Gruppen von Rohrkrümmern gesonderte Antriebseinrichtungen vorgesehen sind.Such an air intake system shows and describes Example DE-A-38 20 674 for a combined Vibration and resonance charging of a multi-cylinder Internal combustion engine with opposing cylinders or Rows of cylinders. Here are the changes in length Suction pipe serving pipe elbows in accordingly curved machine-fixed sections guided telescopically, being for the movable Pipe elbows or groups of elbows separately Drive devices are provided.

Weiter wurde in der P 41 02 453.2 eine Luftansauganlage vorgeschlagen, bei der ein im wesentlichen kreisbogenförmig gestalteter Rohrkrümmer von einem maschinenfesten Abschnitt gesondert stromauf der Mündung dieses maschinenfesten Abschnittes zur Längenänderung der Saugleitung über eine Betätigungswelle schwenkbar angeordnet ist.An air intake system was also installed in the P 41 02 453.2 suggested one at essentially pipe elbow of one shaped like a circular arc machine-fixed section separately upstream of the mouth this machine-fixed section for changing the length of the Suction line can be swiveled via an actuating shaft is arranged.

Aufgabe der Erfindung ist es, für die Rohrkrümmer zweier benachbarter maschinenfester Saugleitungs-Abschnitte zur einwandfreien Längenänderung der Saugleitungen eine im Aufbau einfache Antriebs-Anordnung aufzuzeigen. The object of the invention is two for the elbow Adjacent machine-fixed suction line sections for flawless change in length of the suction lines in Structure to show simple drive arrangement.  

Gelöst wird diese Aufgabe nach dem Kennzeichen des Patentanspruches 1 dadurch, daß von den Rohrkrümmern zweier benachbarter Saugleitungs-Abschnitte ein erster Rohrkrümmer über die Antriebseinrichtung und ein zweiter Rohrkrümmer über den ersten Rohrkrümmer angetrieben angeordnet ist.This problem is solved according to the indicator of the Claim 1 characterized in that of the elbows two adjacent suction line sections, a first one Pipe elbow over the drive device and a second Pipe elbow driven by the first elbow is arranged.

Der Vorteil der Erfindung liegt in einer einzigen Antriebseinrichtung für zwei Gruppen von zwangsgekoppelten Rohrkrümmern zur einwandfreien Längenänderung der jeweiligen Saugleitungen.The advantage of the invention lies in one Drive device for two groups of positively coupled pipe elbows for perfect Change in length of the respective suction lines.

Eine vorteilhafte Ausgestaltung der Erfindung beschreiben die Ansprüche 2 und 3 hinsichtlich einer kostengünstigen Ausbildung der Rohrkrümmer als Gleichteile für sämtliche Saugleitungen einer Brennkraftmaschine.Describe an advantageous embodiment of the invention claims 2 and 3 with regard to an inexpensive Training the pipe elbows as identical parts for everyone Suction lines of an internal combustion engine.

Die Ansprüche 4 und 5 beschreiben relative Zuordnungen von maschinenfesten Saugleitungs-Abschnitten und Rohrkrümmern im Hinblick auf gewünschte Rohrkrümmer-Längen.Claims 4 and 5 describe relative assignments of machine-fixed suction line sections and Pipe bends with regard to desired Pipe elbow lengths.

Schließlich beschreibt Anspruch 6 eine vorteilhafte Kapselung der Antriebs-Anordnung in einem Sammler der Luftansauganlage.Finally, claim 6 describes an advantageous one Encapsulation of the drive assembly in a collector's Air intake system.

Die Erfindung ist anhand zweier in der Zeichnung dargestellter Prinzipskizzen veranschaulicht. Es zeigtThe invention is based on two in the drawing illustrated sketches illustrated. It shows

Fig. 1 eine erfindungsgemäße Luftansauganlage mit relativ entfernt benachbarten maschinenfesten Saugleitungs-Abschnitten und Fig. 1 shows an air intake system according to the invention with relatively distant adjacent machine-fixed suction line sections and

Fig. 2 eine weitere Luftansauganlage mit eng benachbart angeordneten, maschinenfesten Saugleitungs-Ab­ schnitten. Fig. 2 cut another air intake system with closely spaced, machine-fixed suction line from.

Eine Brennkraftmaschine 1 mit einander gegenüberliegend angeordneten Zylindern bzw. Zylinderreihen 2, 2′ ist mit einer Luftansauganlage 3 ausgerüstet, die längenänderbare Saugleitungen 4, 4′ umfaßt. Die Saugleitungen 4, 4′ sind unterteilt in maschinenfeste Abschnitte 5, 5′ und in als bewegbar angeordnete Rohrkrümmer 6, 6′ gestaltete Abschnitte 7, 7′. Zur Längenänderung der Saugleitungen 4, 4′ sind die Rohrkrümmer 6, 6′ um Schwenkachsen 8, 8′ drehbeweglich angeordnet.An internal combustion engine 1 with oppositely arranged cylinders or cylinder banks 2 , 2 'is equipped with an air intake system 3 , the length-adjustable suction lines 4 , 4 '. The suction lines 4 , 4 'are divided into machine-fixed sections 5 , 5 ' and in the form of movably arranged pipe elbows 6 , 6 'sections 7 , 7 '. To change the length of the suction lines 4 , 4 ', the pipe elbows 6 , 6 ' about pivot axes 8 , 8 'are rotatably arranged.

Die erfindungsgemäße Antriebs-Anordnung sieht vor, daß von den Rohrkrümmern 6, 6′ zweier benachbarter maschinenfester Saugleitungs-Abschnitte 5, 5′ ein erster Rohrkrümmer 6 über eine Welle 9 einer nicht dargestellten Antriebseinrichtung - zum Beispiel ein elektrischer Stellmotor - und der zweite Rohrkrümmer 6′ über den ersten Rohrkrümmer 6 angetrieben angeordnet ist.The drive arrangement according to the invention provides that of the pipe elbows 6 , 6 'of two adjacent machine-fixed suction line sections 5 , 5 ' a first pipe elbow 6 via a shaft 9 of a drive device, not shown - for example an electric servomotor - and the second pipe elbow 6 'Is arranged driven over the first elbow 6 .

In baulich vorteilhafter Weise sind die Rohrkrümmer 6, 6′ zur Antriebskoppelung mit formschlüssig zusammenwirkenden Elementen ausgerüstet, wobei als Formschluß-Elemente Verzahnungen 10, 10′ bevorzugt sind. Vorzugsweise sind die Rohrkrümmer 6, 6′ mit den Verzahnungen 10, 10′ einstückig als Kunststoff-Spritzgußteile gestaltet.In a structurally advantageous manner, the elbows 6 , 6 'for driving coupling are equipped with form-fitting interacting elements, toothings 10 , 10 ' being preferred as form-fitting elements. Preferably, the elbows 6 , 6 'with the teeth 10 , 10 ' are integrally designed as plastic injection molded parts.

Wie aus Fig. 1 ersichtlich, weisen die Rohrkrümmer 6, 6′ zwischen entfernt benachbarten maschinenfesten Saugleitungs-Abschnitten 5, 5′ angeordnete Schwenkachsen 8, 8′ auf. Bevorzugt ist diese Anordnung bei relativ kurzen maschinenfesten Saugleitungs-Abschnitten 5, 5′ und diesen gegenüber relativ langen Rohrkrümmern 6, 6′ für hohe Leistung im oberen Drehzahlbereich und günstigem Drehmomentverlauf in den niederen Drehzahlen.As can be seen from Fig. 1, the elbows 6 , 6 'between distant adjacent machine-fixed suction line sections 5 , 5 ' arranged pivot axes 8 , 8 '. This arrangement is preferred for relatively short machine-fixed suction line sections 5 , 5 'and these over relatively long pipe elbows 6 , 6 ' for high performance in the upper speed range and favorable torque curve in the low speeds.

Fig. 2 zeigt eine Luftansauganlage 30, bei der eng benachbart angeordnete Saugleitungs-Abschnitte 50, 50′ zwischen Schwenkachsen 80, 80′ von Rohrkrümmern 60, 60′ angeordnet sind. Bevorzugt ist diese Ausgestaltung bei sehr kurzen Saugleitungs-Abschnitten 50, 50′ und relativ kurzen Rohrkrümmern 60, 60′. Fig. 2 shows an air intake system 30 , are arranged in the closely adjacent suction line sections 50 , 50 'between pivot axes 80 , 80 ' of elbows 60 , 60 '. This configuration is preferred for very short suction line sections 50 , 50 'and relatively short elbows 60 , 60 '.

Die vorbeschriebenen Antriebs-Anordnungen können freisaugend vorgesehen sein, für Brennkraftmaschinen in Straßenfahrzeugen sind diese Anordnungen vorzugsweise jeweils in einem Sammler 11, 110 gekapselt angeordnet.The above-described drive arrangements can be provided with suction, for arrangements for internal combustion engines in road vehicles, these arrangements are preferably each encapsulated in a collector 11 , 110 .

Claims (6)

1. Luftansauganlage für Brennkraftmaschinen mit län­ genänderbaren Saugleitungen,
  • - die jeweils einen maschinenfesten Abschnitt (5, 5′; 50, 50′) und einen als bewegbar angeordneten Rohr­ krümmer (6, 6′; 60, 60′) gestalteten Abschnitt (7, 7′; 70, 70′) umfassen, und
  • - wobei die Rohrkrümmer mit einer Antriebseinrich­ tung in Antriebsverbindung stehen, dadurch gekennzeichnet,
  • - daß von den Rohrkrümmern (6, 6′; 60, 60′) zweier be­ nachbarter maschinenfester Saugleitungs-Abschnitte (5, 5′; 50, 50′) ein erster Rohrkrümmer (6, 60) über die Antriebseinrichtung (Welle 9, 90) und ein zweiter Rohrkrümmer (6, 60′) über den ersten Rohrkrümmer (6, 60) angetrieben angeordnet ist.
1. Air intake system for internal combustion engines with length-adjustable suction lines,
  • - which each comprise a machine-fixed section ( 5 , 5 '; 50 , 50 ') and a section ( 7 , 7 '; 70 , 70 ') designed as a movable pipe elbow ( 6 , 6 '; 60 , 60 '), and
  • - The pipe elbows are in drive connection with a Antriebseinrich device, characterized in that
  • - That of the pipe elbows ( 6 , 6 '; 60 , 60 ') two adjacent machine-fixed suction line sections ( 5 , 5 '; 50 , 50 ') a first pipe elbow ( 6 , 60 ) via the drive device (shaft 9, 90 ) and a second pipe bend ( 6 , 60 ') via the first pipe bend ( 6 , 60 ) is arranged to be driven.
2. Sauganlage nach Anspruch 1, dadurch gekennzeichnet, daß beide Rohrkrümmer (6, 6′; 60, 60′) mit formschlüs­ sig zusammenwirkenden Elementen (Verzahnungen 10, 10′; 100, 100′) zur Antriebskoppelung ausgerüstet sind.2. Suction system according to claim 1, characterized in that both elbows ( 6 , 6 '; 60 , 60 ') are equipped with form-fitting sig interacting elements (teeth 10, 10 '; 100, 100 ') for coupling the drive. 3. Sauganlage nach Anspruch 1 und 2, dadurch gekenn­ zeichnet, daß Rohrkrümmer (6, 6′; 60, 60′) und Form­ schluß-Elemente (Verzahnungen 10, 10′; 100, 100′) als einstückige Bauteile (Kunststoff-Spritzgußteile) aus­ gebildet sind.3. Suction system according to claim 1 and 2, characterized in that pipe elbow ( 6 , 6 '; 60 , 60 ') and form-locking elements (teeth 10, 10 '; 100, 100 ') as one-piece components (plastic injection molded parts ) are formed from. 4. Sauganlage nach den Ansprüchen 1 bis 3, dadurch ge­ kennzeichnet, daß die Rohrkrümmer (6, 6′) zwischen entfernt benachbarten maschinenfesten Saugleitungs-Ab­ schnitten (5, 5′) angeordnete Schwenkachsen (8, 8′) aufweisen. 4. Suction system according to claims 1 to 3, characterized in that the pipe elbows ( 6 , 6 ') between distant adjacent machine-fixed suction pipe sections ( 5 , 5 ') arranged pivot axes ( 8 , 8 '). 5. Sauganlage nach den Ansprüchen 1 bis 3, dadurch ge­ kennzeichnet, daß zwischen den Schwenkachsen (80, 80′) der Rohrkrümmer (60, 60′) maschinenfeste Saugleitungs-Ab­ schnitte (50, 50′) eng benachbart angeordnet sind.5. Suction system according to claims 1 to 3, characterized in that between the swivel axes ( 80 , 80 ') of the pipe elbow ( 60 , 60 ') machine-fixed suction line sections ( 50 , 50 ') are arranged closely adjacent. 6. Sauganlage nach den Ansprüchen 1 bis 5, dadurch ge­ kennzeichnet, daß die Rohrkrümmer (6, 6′; 60, 60′) in einem Sammler (11, 110) der Luftansauganlage (3, 30) angeordnet sind.6. Suction system according to claims 1 to 5, characterized in that the pipe elbows ( 6 , 6 '; 60 , 60 ') in a collector ( 11 , 110 ) of the air intake system ( 3 , 30 ) are arranged.
DE4137704A 1991-11-15 1991-11-15 Air aspiration device for IC engine with length-alterable suction lines - comprises sections fixed to engine and upstream of their mouths pivotably arranged pipe curves Withdrawn DE4137704A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4137704A DE4137704A1 (en) 1991-11-15 1991-11-15 Air aspiration device for IC engine with length-alterable suction lines - comprises sections fixed to engine and upstream of their mouths pivotably arranged pipe curves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4137704A DE4137704A1 (en) 1991-11-15 1991-11-15 Air aspiration device for IC engine with length-alterable suction lines - comprises sections fixed to engine and upstream of their mouths pivotably arranged pipe curves

Publications (1)

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DE4137704A1 true DE4137704A1 (en) 1993-05-19

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DE4137704A Withdrawn DE4137704A1 (en) 1991-11-15 1991-11-15 Air aspiration device for IC engine with length-alterable suction lines - comprises sections fixed to engine and upstream of their mouths pivotably arranged pipe curves

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0747584A1 (en) * 1995-06-09 1996-12-11 FIAT AUTO S.p.A. An inlet manifold with variable length ducts
US5740770A (en) * 1996-02-16 1998-04-21 Toyota Jidosha Kabushiki Kaisha Variable intake air apparatus
DE19701118A1 (en) * 1997-01-15 1998-07-16 Mann & Hummel Filter Suction device made of thermoplastic
DE19737729A1 (en) * 1997-08-29 1999-03-04 Knecht Filterwerke Gmbh Inlet manifold for internal combustion engine
EP1024258A2 (en) * 1999-01-27 2000-08-02 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Air intake systems
EP1674691A2 (en) 2004-12-22 2006-06-28 MAHLE Filtersysteme GmbH Air intake device of internal combustion engine
US7334663B2 (en) * 2005-07-27 2008-02-26 Mitsubishi Denki Kabushiki Kaisha Variable resonator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3820674A1 (en) * 1988-06-18 1989-12-21 Porsche Ag Air intake system for a multi-cylinder internal combustion engine
EP0355960A2 (en) * 1988-08-16 1990-02-28 Rover Group Limited An internal combustion engine inlet manifold

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3820674A1 (en) * 1988-06-18 1989-12-21 Porsche Ag Air intake system for a multi-cylinder internal combustion engine
EP0355960A2 (en) * 1988-08-16 1990-02-28 Rover Group Limited An internal combustion engine inlet manifold

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP 63-117120 A. In: Patents Abstracts of Japan. M-746,Sept.27,1988,Vol.12/No.360 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0747584A1 (en) * 1995-06-09 1996-12-11 FIAT AUTO S.p.A. An inlet manifold with variable length ducts
US5740770A (en) * 1996-02-16 1998-04-21 Toyota Jidosha Kabushiki Kaisha Variable intake air apparatus
DE19701118A1 (en) * 1997-01-15 1998-07-16 Mann & Hummel Filter Suction device made of thermoplastic
KR100520803B1 (en) * 1997-01-15 2005-10-12 필터벨크 만 운트 훔멜 게엠베하 Intake system of thermoplastic plastics
DE19737729A1 (en) * 1997-08-29 1999-03-04 Knecht Filterwerke Gmbh Inlet manifold for internal combustion engine
EP1024258A2 (en) * 1999-01-27 2000-08-02 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Air intake systems
EP1024258A3 (en) * 1999-01-27 2000-11-22 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Air intake systems
EP1674691A2 (en) 2004-12-22 2006-06-28 MAHLE Filtersysteme GmbH Air intake device of internal combustion engine
US7334663B2 (en) * 2005-07-27 2008-02-26 Mitsubishi Denki Kabushiki Kaisha Variable resonator

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