EP1211409A1 - Thin-walled suction tube for an internal combustion engine - Google Patents

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

Info

Publication number
EP1211409A1
EP1211409A1 EP02004931A EP02004931A EP1211409A1 EP 1211409 A1 EP1211409 A1 EP 1211409A1 EP 02004931 A EP02004931 A EP 02004931A EP 02004931 A EP02004931 A EP 02004931A EP 1211409 A1 EP1211409 A1 EP 1211409A1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
intake manifold
opening
thin
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Withdrawn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
EP02004931A
Other languages
German (de)
French (fr)
Inventor
Hans-Ulrich Kühnel
Franz Delle
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
Publication of EP1211409A1 publication Critical patent/EP1211409A1/en
Withdrawn legal-status Critical Current

Links

Images

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 an intake manifold for an internal combustion engine according to the preamble of claim 1.
  • Such a suction pipe is known from DE 25 26 550 A.
  • suction pipes made of correspondingly lighter materials (especially plastic or aluminum).
  • Made of die-cast aluminum or plastic injection Series-made suction pipes have a wall thickness of about 2 millimeters.
  • DE 25 26 550 A is to avoid damage to the intake manifold and a secondary outlet (opening) is provided to discharge the disproportionate pressure, when a predetermined pressure is exceeded within the suction tube is opened.
  • the secondary outlet is initially a cup-shaped one Cover closed, on a nozzle on the outside of the intake manifold wall is attachable.
  • this pot-shaped lid has the decisive disadvantage that it releases the secondary outlet when intake manifold explosions occur and thus creates a pressure balance in the atmosphere; after the suction pipe explosion has subsided and release of the secondary outlet is the continued operation of the internal combustion engine however, in no case possible, since after opening the secondary outlet the circuit of the fuel pump or the ignition current of the internal combustion engine is interrupted.
  • the cover To put the engine back into operation, the cover must first be put back on, for example, the circuit for the fuel pump to close again and start the internal combustion engine. This means that the vehicle stops in the event of an intake manifold explosion, which means that safety-critical situations occur especially while driving can. In addition, it is not guaranteed that the driver of the vehicle in the If the internal combustion engine fails, the opening with the cover is closed again lock so that the vehicle may have to be towed to the workshop.
  • the object of the invention is to create a generic one To design the intake manifold so that the disadvantages described are avoided.
  • the drawing shows a section through a section 1 of a downstream one shown throttle valve connector lying plastic / metal intake manifold, that too 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 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 with a stem 5 into a central opening 6 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, is pushed onto a cover flap 11 and clipped with 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 by Explosive occurrences that occasionally occur after starting the internal combustion engine Ignition of stored / condensed in the intake manifold 1 and with the in Intake pipe 1 contained air mixed fuel / fuel vapor residues is caused.
  • this pressure increase is caused by opening of the valve 3 limited.
  • the air / fuel gas can escape into the free atmosphere.
  • the burning gas cools down in the opening 2 divided by ribs 13 and also in the outlet opening 13 covered by the cap 11 between Screw bushing 8 and collar ring 10.
  • valve 3 closes again Internal combustion engine remains ready for operation.
  • the cap 11 prevents entry of dirt and water into 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 Saugrohr für eine Brennkraftmaschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an intake manifold for an internal combustion engine according to the preamble of claim 1.

Ein solches Saugrohr ist aus der DE 25 26 550 A bekannt.Such a suction pipe is known from DE 25 26 550 A.

In dieser Entgegenhaltung ist beschrieben, daß die Ursachen von Saugrohrexplosionen, die zur teilweisen oder ganzen Zerstörung von Gemischaufbereitungsanlagen bei Brennkraftmaschinen durch Bruch oder Brand führen, auf Zündungen des bei offenem Einlaßventil vorgelagerten oder während des Saughubes angesaugten Luft-Kraftstoff-Gemisches zurückzuführen sind. Aufgrund dieser Zündungen kommt es zu einem überproportionalen Anstieg des Druckes in dem Saugrohr, wodurch das Saugrohr beschädigt oder sogar zerstört wird. Bei "dickwandigen" Saugrohren konnte es zu einer solchen Zerstörung nicht kommen, da die Materialstärke des Saugrohres ausreichte, um dem überproportionalen Druck standzuhalten. Solche "dickwandigen" Saugrohre waren beispielsweise aus Sandguß mit Wandungen, die eine Dicke von etwa 4 Millimetern hergestellt und wiesen keine Trenn-Nähte auf. Diese Saugrohre waren schwer und stabil.This document describes that the causes of intake manifold explosions, for the partial or total destruction of mixture processing plants in internal combustion engines due to breakage or fire, on ignition of the Air-fuel mixture upstream of the open intake valve or sucked in during the suction stroke are due. Because of these ignitions it happens a disproportionate increase in pressure in the intake manifold, causing the intake manifold is damaged or even destroyed. With "thick-walled" intake manifolds, it could such a destruction does not occur because of the material thickness of the suction pipe sufficient to withstand the disproportionate pressure. Such "thick-walled" Suction pipes were, for example, made of sand cast with walls that have a thickness of made about 4 millimeters and had no seams. These suction pipes were heavy and stable.

Bei modernen Brennkraftmaschinen steht die Gewichtsersparnis im Vordergrund, so daß Saugrohre aus entsprechend leichteren Materialien (insbesondere Kunststoff oder Aluminium) gefertigt werden. Aus Aluminium-Druckguß oder Kunststoff-Spritzguß in Serie hergestellte Saugrohre haben eine Wandstärke von etwa 2 Millimetern. In modern internal combustion engines, the focus is on saving weight, so that suction pipes made of correspondingly lighter materials (especially plastic or aluminum). Made of die-cast aluminum or plastic injection Series-made suction pipes have a wall thickness of about 2 millimeters.

Bei der DE 25 26 550 A ist zur Vermeidung von Beschädigungen des Saugrohres und zum Abführen des überproportionalen Druckes ein Nebenauslaß (Öffnung) vorgesehen, der bei Übersteigen eines vorbestimmten Druckes innerhalb des Saugohres geöffnet wird. Dabei ist der Nebenauslaß zunächst durch einen topfförmigen Deckel geschlossen, der auf einem Stutzen an der Außenseite der Saugrohrwand aufsetzbar ist. Dieser topfförmige Deckel hat jedoch den entscheidenden Nachteil, daß er zwar beim Auftreten von Saugrohrexplosionen den Nebenauslaß freigibt und somit einen Druckausgleich in die Atmosphäre herstellt; nach Abklingen der Saugrohrexplosion und Freigabe des Nebenauslasses ist der weitere Betrieb der Brennkraftmaschine jedoch auf keinen Fall möglich, da nach dem Öffnen des Nebenauslasses der Stromkreis der Kraftstoffpumpe oder der Zündstrom der Brennkraftmaschine unterbrochen wird. Um die Brennkraftmaschine wieder in Betrieb zu setzen, muß der Deckel erst wieder aufgesetzt werden, um beispielsweise den Stromkreis für die Kraftstoffpumpe wieder zu schließen und die Brennkraftmaschine anzulassen. Das bedeutet, daß das Fahrzeug im Falle einer Saugrohrexplosion stehen bleibt, wodurch besonders während der Fahrt sicherheitskritische Situationen auftreten können. Außerdem ist nicht gewährleistet, daß der Fahrer des Fahrzeuges in der Lage ist, beim Ausfall der Brennkraftmaschine die Öffnung mit dem Deckel wieder zu verschließen, so daß ggf. das Fahrzeug in die Werkstatt abgeschleppt werden muß.DE 25 26 550 A is to avoid damage to the intake manifold and a secondary outlet (opening) is provided to discharge the disproportionate pressure, when a predetermined pressure is exceeded within the suction tube is opened. The secondary outlet is initially a cup-shaped one Cover closed, on a nozzle on the outside of the intake manifold wall is attachable. However, this pot-shaped lid has the decisive disadvantage that it releases the secondary outlet when intake manifold explosions occur and thus creates a pressure balance in the atmosphere; after the suction pipe explosion has subsided and release of the secondary outlet is the continued operation of the internal combustion engine however, in no case possible, since after opening the secondary outlet the circuit of the fuel pump or the ignition current of the internal combustion engine is interrupted. To put the engine back into operation, the cover must first be put back on, for example, the circuit for the fuel pump to close again and start the internal combustion engine. This means that the vehicle stops in the event of an intake manifold explosion, which means that safety-critical situations occur especially while driving can. In addition, it is not guaranteed that the driver of the vehicle in the If the internal combustion engine fails, the opening with the cover is closed again lock so that the vehicle may have to be towed to the workshop.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, ein gattungsgemäßes Saugrohr derart zu gestalten, daß die geschilderten Nachteile vermieden werden.Proceeding from this, the object of the invention is to create a generic one To design the intake manifold so that the disadvantages described are avoided.

Diese Aufgabe ist durch die im Kennzeichen des Patenanspruchs 1 angegebenen Merkmale gelöst worden.This task is by the specified in the characterizing part of patent claim 1 Features have been resolved.

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 Drosselklappenstutzens liegenden Kunststoff-/Metallsaugrohres, das zu einem der Zylinder der Brennkraftmaschine führt. The drawing shows a section through a section 1 of a downstream one shown throttle valve connector lying plastic / metal intake manifold, that too 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 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 with a stem 5 into a central opening 6 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 Abdeckklappe 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, is pushed onto a cover flap 11 and clipped with 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 gespeicherten/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 by Explosive occurrences that occasionally occur after starting the internal combustion engine Ignition of stored / condensed in the intake manifold 1 and with the in Intake pipe 1 contained air mixed 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 by the idle operation after starting the throttle valve do not get out can and thereby causes a high pressure rise, which will destroy the intake manifold can cause.

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 escape into the free atmosphere. The burning gas cools down in the opening 2 divided by ribs 13 and also in the outlet opening 13 covered by the cap 11 between Screw bushing 8 and collar ring 10. Then valve 3 closes again Internal combustion engine remains ready for operation. The cap 11 prevents entry of dirt and water into the opening 2.

Claims (1)

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, wobei das Saugrohr eine stromab des Drosselklappenstutzens angeordnete und in die Atmosphäre führende Öffnung aufweist, die bei Übersteigen eines vorbestimmten Druckes innerhalb des Saugrohres geöffnet wird, damit die Wandung des Saugrohres nicht durch Übersteigen des vorbestimmten Druckes beschädigt wird und wobei die Öffnung in der Wandung des Saugrohres angeordnet ist, dadurch gekennzeichnet, dass in der Öffnung (2) ein Ventil (3) angeordnet ist, das auf einen Überdruck im Saugrohr anspricht, wobei das Ventil (3) nach Wegfall des Überdruckes wieder selbsttätig schließt.Intake pipe for an internal combustion engine with connection channels that lead to the cylinders of the internal combustion engine, and at least one throttle valve assembly, with which the combustion air drawn in by the internal combustion engine is controlled, the intake pipe having a downstream opening of the throttle valve assembly and leading into the atmosphere, which when exceeded a predetermined pressure is opened within the intake manifold so that the wall of the intake manifold is not damaged by exceeding the predetermined pressure and the opening is arranged in the wall of the intake manifold, characterized in that a valve (3) is arranged in the opening (2) which responds to excess pressure in the intake manifold, the valve (3) automatically closing again after the excess pressure has been removed.
EP02004931A 1996-06-27 1997-04-15 Thin-walled suction tube for an internal combustion engine Withdrawn EP1211409A1 (en)

Applications Claiming Priority (3)

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
EP97106127A EP0816668B1 (en) 1996-06-27 1997-04-15 Thin-walled suction tube for an internal combustion engine

Related Parent Applications (1)

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

Publications (1)

Publication Number Publication Date
EP1211409A1 true EP1211409A1 (en) 2002-06-05

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 Before (1)

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

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)

Families Citing this family (8)

* 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
DE10131110A1 (en) * 2001-06-27 2003-01-09 Mann & Hummel Filter Intermediate flange system for a direct injection 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

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
EP0280122A2 (en) * 1987-02-24 1988-08-31 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Suction device for an internal-combustion engine
US5150669A (en) * 1989-11-06 1992-09-29 General Motors Corporation Pressure relief means for integrated induction system
US5186198A (en) * 1991-12-12 1993-02-16 Penn Troy Maching Company, Inc. Intake manifold relief valve
US5280769A (en) * 1993-05-04 1994-01-25 General Motors Corporation Pressure relief means for induction system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1677019A (en) * 1926-01-14 1928-07-10 Casati Pietro Arrangement for eliminating the dangers due to back fires in carburetors
DE1918382A1 (en) * 1969-04-11 1970-10-22 Porsche Kg Device on internal combustion engines to prevent fuel from flowing out of the mixture formation system into the atmosphere
US4499916A (en) * 1983-01-31 1985-02-19 Allied Corporation Vacuum check valve
US4538555A (en) * 1984-05-07 1985-09-03 John Kite Power plate
DE3536522A1 (en) * 1985-10-12 1987-04-16 Audi Ag Intake pipe for an internal combustion engine
US4986225A (en) * 1990-06-08 1991-01-22 General Motors Corporation Intake reservoir system for an engine having a check valve
US5018486A (en) * 1990-06-08 1991-05-28 General Motors Corporation Pressure relief system for a check valve
US4991547A (en) * 1990-06-08 1991-02-12 General Motors Corporation Intake port pressure control system for engine induction system
US5129426A (en) * 1991-05-13 1992-07-14 Vernay Laboratories, Inc. Tube mounted check valve
US5375565A (en) * 1993-12-16 1994-12-27 Caterpillar Inc. Flame arrestor and method of manufacture
JPH08100722A (en) * 1994-09-29 1996-04-16 Toyota Motor Corp Air intake pipe structure for internal combustion engine
US5507256A (en) * 1995-06-14 1996-04-16 Ford Motor Company Intake manifold positive pressure relief disk

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
EP0280122A2 (en) * 1987-02-24 1988-08-31 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Suction device for an internal-combustion engine
US5150669A (en) * 1989-11-06 1992-09-29 General Motors Corporation Pressure relief means for integrated induction system
US5186198A (en) * 1991-12-12 1993-02-16 Penn Troy Maching Company, Inc. Intake manifold relief valve
US5280769A (en) * 1993-05-04 1994-01-25 General Motors Corporation Pressure relief means for induction system

Also Published As

Publication number Publication date
BR9703747A (en) 1998-08-11
DE19625768A1 (en) 1998-01-02
DE19625768B4 (en) 2009-04-16
EP0816668A2 (en) 1998-01-07
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

Similar Documents

Publication Publication Date Title
EP1065350B1 (en) Combustion engine with a breather device
DE102006054117B4 (en) Crankcase ventilation of an internal combustion engine controlled in partial and full load operation
EP0459031A1 (en) Pressure control valve for the carter ventilation of an internal combustion engine
DE19700733A1 (en) Cylinder head cover for internal combustion engine of motor vehicle
US5201301A (en) Adjustable ambient air filtering system and pollution control device
DE2258551A1 (en) CONTROL DEVICE FOR A CARBURETOR
DE3427273C2 (en)
DE3823525A1 (en) CARBURETTOR FOR COMBUSTION ENGINES
EP0816668B1 (en) Thin-walled suction tube for an internal combustion engine
DE10154666A1 (en) Crankcase ventilation for an internal combustion engine with exhaust gas turbocharging
DE3305286A1 (en) IMPROVEMENTS IN LAYERED COMBUSTION ENGINES
DE2702621A1 (en) OIL FILLER CAP
US4291660A (en) Recycling exhaust fumes valve
DE10252474B4 (en) Internal combustion engine with turbocharger
EP0280122B1 (en) Suction device for an internal-combustion engine
DE2258550A1 (en) DEVICE FOR THE IDLE SYSTEM OF A CARBURETOR
DE102021201825B3 (en) Tank filler neck with liquid separator (II)
DE4002081C2 (en) Method for controlling a bypass of a turbocharger and diesel internal combustion engine for carrying out this method
DE102021201826A1 (en) Tank filler neck with liquid separator
DE2526550A1 (en) Induction pipe for internal combustion engines - has auxiliary outlet as safety precaution against blow back
EP0314878A2 (en) Method for adjusting the loaded length of the spring of an exhaust gas recirculation valve for an internal combustion engine
DE2946483A1 (en) IC engine recycling unburnt fuel in exhaust - has cyclone separator in exhaust pipe extracting heavy particles
DE102023000108B3 (en) Secondary air valve for a secondary air system of an internal combustion engine, internal combustion engine and motor vehicle
DE3721522A1 (en) Boost pressure control device
EP0106950B1 (en) Internal-combustion piston engine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020305

AC Divisional application: reference to earlier application

Ref document number: 816668

Country of ref document: EP

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PIERBURG GMBH

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DELLEN, FRANZ

Inventor name: KUEHNEL, HANS-ULRICH

17Q First examination report despatched

Effective date: 20020725

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 20021129