EP0816668A2 - Thin-walled suction tube for an internal combustion engine - Google Patents

Thin-walled suction tube for an internal combustion engine Download PDF

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Publication number
EP0816668A2
EP0816668A2 EP97106127A EP97106127A EP0816668A2 EP 0816668 A2 EP0816668 A2 EP 0816668A2 EP 97106127 A EP97106127 A EP 97106127A EP 97106127 A EP97106127 A EP 97106127A EP 0816668 A2 EP0816668 A2 EP 0816668A2
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
opening
valve
ribs
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.)
Granted
Application number
EP97106127A
Other languages
German (de)
French (fr)
Other versions
EP0816668B1 (en
EP0816668A3 (en
Inventor
Hans-Ulrich Kühnel
Franz Dellen
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Priority to EP02004931A priority Critical patent/EP1211409A1/en
Publication of EP0816668A2 publication Critical patent/EP0816668A2/en
Publication of EP0816668A3 publication Critical patent/EP0816668A3/en
Application granted granted Critical
Publication of EP0816668B1 publication Critical patent/EP0816668B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • 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
    • 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
    • F02M35/10236—Overpressure or vacuum relief means; Burst protection
    • 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
    • F02M35/10301—Flexible, resilient, pivotally or movable parts; Membranes
    • 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

Definitions

  • the invention relates to a thin-walled intake manifold for an internal combustion engine according to the preamble of claim 1.
  • suction pipes are increasingly used because they are considerably lighter are as thin-walled suction pipes and in terms of their surface and shape can be designed more freely. They are made of metal or plastic, both of which lack strength
  • the invention is therefore based on the object of a generic To design the intake manifold so that the lack of strength compensates and the bursting of the thin-walled suction pipe is excluded.
  • the drawing shows a section through a section 1 of a downstream Throttle valve seat, not shown, lying plastic / metal suction pipe, that leads to one of the cylinders of the internal combustion engine.
  • this intake manifold is provided downstream of the throttle valve connector to arrange an opening 2 leading into the atmosphere, which through a valve 3 responsive to the pressure in the intake manifold 1 is controlled.
  • This valve 3 is a so-called elastomer umbrella valve 4, which projects into a central opening 6 with a stem 5 and is held by a stud 7 of a screw bushing 8.
  • the screw bushing 8 has a collar ring 10 spaced apart by ribs 9 on which a cover cap 11 is pushed and clipped to it, the ribs 9 of the screw bushing 8 form a tool attachment 12, so that the screw bushing 8 can be screwed into the opening 2.
  • the invention is based on the knowledge that the bursting of the suction pipes 1 due to an explosion-like occurrence that occurs occasionally after the engine is started Ignition of stored / condensed and in the intake manifold 1 mixed with the air contained in the intake manifold 1 fuel / fuel vapor residues is caused.
  • this pressure increase is caused by opening of the valve 3 limited.
  • the air / fuel gas can be released into the free atmosphere emerge.
  • the burning one cools in the opening 2 divided by ribs 13 Gas from and also in the outlet opening covered by the cap 11 13 between screw bushing 8 and collar ring 10. Then closes valve 3 again, the internal combustion engine remains ready for operation.
  • the cover cap 11 prevents dirt and water from entering the opening 2.

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)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Catching Or Destruction (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

The manifold has branch pipes leading to the cylinders and a housing for a throttle butterfly. The valve (3) can be umbrella-shaped and of elastomer material (4), having a stem (5) protruding into a central opening (6), and is held in place by a boss (7) on a screwed bush (8). The latter can have an annular collar (10) held clear by ribs (9), and onto which a covering cap (11) clips. The ribs can accommodate a tool by which the bush is screwed into place in the opening (2).

Description

Die Erfindung betrifft ein dünnwandiges Saugrohr für eine Brennkraftmaschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a thin-walled intake manifold for an internal combustion engine according to the preamble of claim 1.

Derartige Saugrohre finden zunehmend Verwendung, da sie erheblich leichter sind als dünnwandige Saugrohre und bezüglich ihrer Oberfläche und Formgebung freier gestaltet werden können. Sie werden aus Metall oder Kunststoff hergestellt, denen beiden Festigkeit fehltSuch suction pipes are increasingly used because they are considerably lighter are as thin-walled suction pipes and in terms of their surface and shape can be designed more freely. They are made of metal or plastic, both of which lack strength

Es sind daher Maßnahmen zu treffen, mit denen diese fehlende Festigkeit kompensiert werden kann.Measures must therefore be taken to compensate for this lack of strength can be.

Aus dem Automobilbereich sind Fälle bekannt, bei denen ein derartiges Saugrohr nach dem Anlassen der Brennkraftmaschine geborsten ist.Cases are known from the automotive sector in which such a suction pipe is broken after the engine is started.

Hiervon ausgehend liegt der Erfindung daher die Aufgabe zugrunde, ein gattungsgemäßes Saugrohr derart zu gestalten, daß die fehlende Festigkeit kompensiert und das Bersten des dünnwandigen Saugrohrs ausgeschlossen ist.Proceeding from this, the invention is therefore based on the object of a generic To design the intake manifold so that the lack of strength compensates and the bursting of the thin-walled suction pipe is excluded.

Diese Aufgabe ist durch die im Kennzeichen des Patentanspruchs 1 angegebenen Merkmale gelöst worden. Vorteilhafte Weiterbildungen sind in den Unteransprüchen angegeben.This object is indicated by the characterizing part of claim 1 Features have been resolved. Advantageous further developments are in the subclaims specified.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben.An embodiment of the invention is shown in the drawing and will described below.

Die Zeichnung zeigt einen Schnitt durch einen Abschnitt 1 eines stromab eines nicht dargestellten Drosselklappenstuzens liegenden Kunststoff-/Metallsaugrohres, das zu einem der Zylinder der Brennkraftmaschine führt. The drawing shows a section through a section 1 of a downstream Throttle valve seat, not shown, lying plastic / metal suction pipe, that leads to one of the cylinders of the internal combustion engine.

Erfindungsgemäß ist bei diesem Saugrohr vorgesehen, stromab des Drosselklappenstutzens eine in die Atmosphäre führende Öffnung 2 anzuordnen, die durch ein auf den Druck im Saugrohr 1 ansprechendes Ventil 3 gesteuert wird.According to the invention, this intake manifold is provided downstream of the throttle valve connector to arrange an opening 2 leading into the atmosphere, which through a valve 3 responsive to the pressure in the intake manifold 1 is controlled.

Bei diesem Ventil 3 handelt es sich hier um ein sogenanntes Elastomer-Regenschirmventil 4, das mit einem Stiel 5 in eine zentrale Öffnung 6 hineinragt und durch einen Stiftansatz 7 einer Schraubbuchse 8 gehalten ist.This valve 3 is a so-called elastomer umbrella valve 4, which projects into a central opening 6 with a stem 5 and is held by a stud 7 of a screw bushing 8.

Die Schraubbuchse 8 weist einen durch Rippen 9 beabstandeten Kragenring 10 auf, auf den eine Abdeckkappe 11 aufgeschoben und mit diesem verklippst ist, wobei die Rippen 9 der Schraubbuchse 8 einen Werkzeugansatz 12 bilden, so daß die Schraubbuchse 8 in die Öffnung 2 eingeschraubt werden kann.The screw bushing 8 has a collar ring 10 spaced apart by ribs 9 on which a cover cap 11 is pushed and clipped to it, the ribs 9 of the screw bushing 8 form a tool attachment 12, so that the screw bushing 8 can be screwed into the opening 2.

Die Erfindung basiert auf der Erkenntnis, daß das Bersten der Saugrohre 1 durch nach dem Anlassen der Brennkraftmaschine gelegentlich auftretendes explosionsartiges Entzünden von im Saugrohr 1 gespeicherte/kondensierten und mit der im Saugrohr 1 enthaltenen Luft gemischten Brennstoff-/Brennstoffdampfrückständen verursacht wird.The invention is based on the knowledge that the bursting of the suction pipes 1 due to an explosion-like occurrence that occurs occasionally after the engine is started Ignition of stored / condensed and in the intake manifold 1 mixed with the air contained in the intake manifold 1 fuel / fuel vapor residues is caused.

Hierdurch entsteht im Saugrohr 1 eine Flamm-Druckwelle, die durch die im Leerlaufbetrieb nach dem Starten geschlossene Drosselklappe nicht nach außen gelangen kann und dadurch einen hohen Druckanstieg bewirkt, der eine Zerstörung des Saugrohres verursachen kann.This creates a flame pressure wave in the intake manifold 1, which in the Idle operation after starting closed throttle valve not to the outside can reach and thereby causes a high pressure rise, which leads to destruction of the suction pipe.

Durch die erfindungsgemäßen Maßnahmen wird dieser Druckanstieg durch Öffnen des Ventils 3 begrenzt. Die Luft/das Brenngas kann in die freie Atmosphäre austreten. In der durch Rippen 13 aufgeteilten Öffnung 2 kühlt sich das brennende Gas ab und ebenso in der durch die Abdeckkappe 11 abgedeckten Auslaßöffnung 13 zwischen Schraubbuchse 8 und Kragenring 10. Danach schließt das Ventil 3 wieder, die Brennkraftmaschine bleibt betriebsbereit. Die Abdeckkappe 11 verhindert den Eintritt von Schmutz und Wasser in die Öffnung 2.By means of the measures according to the invention, this pressure increase is caused by opening of the valve 3 limited. The air / fuel gas can be released into the free atmosphere emerge. The burning one cools in the opening 2 divided by ribs 13 Gas from and also in the outlet opening covered by the cap 11 13 between screw bushing 8 and collar ring 10. Then closes valve 3 again, the internal combustion engine remains ready for operation. The cover cap 11 prevents dirt and water from entering the opening 2.

Claims (4)

Dünnwandiges Saugrohr für eine Brennkraftmaschine mit Anschlußkanälen, die zu den Zylindern der Brennkraftmaschine führen, und wenigstens einem Drosselklappenstutzen, mit dem die von der Brennkraftmaschine angesaugte Brennluft gesteuert wird, dadurch gekennzeichnet, daß in dem Saugrohr (1) stromab des Drosselklappenstutzens eine in die Atmosphäre führende Öffnung (2) angeordnet ist, die durch ein auf den Druck im Saugrohr (1) ansprechendes Ventil (3) gesteuert wird.Thin-walled intake manifold for an internal combustion engine with connection channels that lead to the cylinders of the internal combustion engine, and at least one throttle valve connector with which the combustion air sucked in by the internal combustion engine is controlled, characterized in that one leading into the atmosphere downstream of the throttle valve connector in the intake manifold (1) Opening (2) is arranged, which is controlled by a valve (3) responsive to the pressure in the intake manifold (1). Saugrohr nach Anspruch 1, dadurch gekennzeichnet, daß das Ventil (3) von einem Elastomer-Regenschirmventil (4) gebildet ist, das mit einem Stiel (5) in eine zentrale Öffnung (6) hineinragt und durch einen Stiftansatz (7) einer Schraubbuchse (8) gehalten ist.Intake pipe according to claim 1, characterized in that the valve (3) is formed by an elastomer umbrella valve (4) which projects with a stem (5) into a central opening (6) and through a pin extension (7) of a screw bushing ( 8) is held. Saugrohr nach Anspruch 2, dadurch gekennzeichnet, daß die Schraubbuchse (8) einen durch Rippen (9) beabstandeten Kragenring (10) aufweist, auf den eine Abdeckkappe (11) aufgeschoben und mit diesem verklippst ist.Intake pipe according to claim 2, characterized in that the screw bushing (8) has a collar ring (10) spaced apart by ribs (9), onto which a cover cap (11) is pushed and clipped to it. Saugrohr nach Anspruch 3, dadurch gekennzeichnet, daß die Rippen (9) der Schraubbuchse (8) einen Werkzeugansatz (12) bilden, so daß die Schraubbuchse (9) in die Öffnung (2) eingeschraubt werden kann.Intake pipe according to claim 3, characterized in that the ribs (9) of the screw bush (8) form a tool attachment (12) so that the screw bush (9) can be screwed into the opening (2).
EP97106127A 1996-06-27 1997-04-15 Thin-walled suction tube for an internal combustion engine Expired - Lifetime EP0816668B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02004931A EP1211409A1 (en) 1996-06-27 1997-04-15 Thin-walled suction tube for an internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19625768A DE19625768B4 (en) 1996-06-27 1996-06-27 Thin-walled intake manifold for an internal combustion engine
DE19625768 1996-06-27

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP02004931A Division EP1211409A1 (en) 1996-06-27 1997-04-15 Thin-walled suction tube for an internal combustion engine

Publications (3)

Publication Number Publication Date
EP0816668A2 true EP0816668A2 (en) 1998-01-07
EP0816668A3 EP0816668A3 (en) 1998-04-22
EP0816668B1 EP0816668B1 (en) 2002-09-18

Family

ID=7798193

Family Applications (2)

Application Number Title Priority Date Filing Date
EP97106127A Expired - Lifetime EP0816668B1 (en) 1996-06-27 1997-04-15 Thin-walled suction tube for an internal combustion engine
EP02004931A Withdrawn EP1211409A1 (en) 1996-06-27 1997-04-15 Thin-walled suction tube for an internal combustion engine

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP02004931A Withdrawn EP1211409A1 (en) 1996-06-27 1997-04-15 Thin-walled suction tube for an internal combustion engine

Country Status (8)

Country Link
US (1) US5826554A (en)
EP (2) EP0816668B1 (en)
JP (1) JP3893192B2 (en)
KR (1) KR100472870B1 (en)
BR (1) BR9703747A (en)
DE (2) DE19625768B4 (en)
ES (1) ES2179236T3 (en)
MX (1) MX9704054A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131110A1 (en) * 2001-06-27 2003-01-09 Mann & Hummel Filter Intermediate flange system for a direct injection internal combustion engine

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10047197A1 (en) 2000-09-23 2002-04-25 Bosch Gmbh Robert Intake pipe for an internal combustion engine
EP2656868B1 (en) * 2002-02-04 2020-08-05 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US6571753B1 (en) 2002-03-20 2003-06-03 Brunswick Corporation Passive air vent for a marine engine
ATE350572T1 (en) * 2004-09-28 2007-01-15 Magneti Marelli Powertrain Spa INLET MANIFOLD WITH AIR RESERVOIR FOR AN INTERNAL COMBUSTION ENGINE
DE102009048209A1 (en) * 2009-10-05 2011-04-07 Mann + Hummel Gmbh Air filter for an internal combustion engine
JP5959156B2 (en) * 2011-04-11 2016-08-02 株式会社セキソー Manufacturing method of duct connecting part
US9873325B1 (en) 2014-10-22 2018-01-23 Hydro-Gear Limited Partnership Drive apparatus

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US4499916A (en) * 1983-01-31 1985-02-19 Allied Corporation Vacuum check valve
EP0280122A2 (en) * 1987-02-24 1988-08-31 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Suction device for an internal-combustion engine
US5129426A (en) * 1991-05-13 1992-07-14 Vernay Laboratories, Inc. Tube mounted check valve
US5507256A (en) * 1995-06-14 1996-04-16 Ford Motor Company Intake manifold positive pressure relief disk

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US4986225A (en) * 1990-06-08 1991-01-22 General Motors Corporation Intake reservoir system for an engine having a check valve
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JPH08100722A (en) * 1994-09-29 1996-04-16 Toyota Motor Corp Air intake pipe structure for internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2526550A1 (en) * 1975-06-13 1976-12-23 Porsche Ag Induction pipe for internal combustion engines - has auxiliary outlet as safety precaution against blow back
US4499916A (en) * 1983-01-31 1985-02-19 Allied Corporation Vacuum check valve
EP0280122A2 (en) * 1987-02-24 1988-08-31 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Suction device for an internal-combustion engine
US5129426A (en) * 1991-05-13 1992-07-14 Vernay Laboratories, Inc. Tube mounted check valve
US5507256A (en) * 1995-06-14 1996-04-16 Ford Motor Company Intake manifold positive pressure relief disk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131110A1 (en) * 2001-06-27 2003-01-09 Mann & Hummel Filter Intermediate flange system for a direct injection internal combustion engine

Also Published As

Publication number Publication date
EP1211409A1 (en) 2002-06-05
BR9703747A (en) 1998-08-11
DE19625768A1 (en) 1998-01-02
DE19625768B4 (en) 2009-04-16
JP3893192B2 (en) 2007-03-14
EP0816668B1 (en) 2002-09-18
JPH1054314A (en) 1998-02-24
DE59708238D1 (en) 2002-10-24
KR100472870B1 (en) 2005-05-20
MX9704054A (en) 1997-12-31
EP0816668A3 (en) 1998-04-22
US5826554A (en) 1998-10-27
KR980002784A (en) 1998-03-30
ES2179236T3 (en) 2003-01-16

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