EP0576729B1 - Collecteur d'admission pour un moteur à combustion interne avec une culasse - Google Patents

Collecteur d'admission pour un moteur à combustion interne avec une culasse Download PDF

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Publication number
EP0576729B1
EP0576729B1 EP92121543A EP92121543A EP0576729B1 EP 0576729 B1 EP0576729 B1 EP 0576729B1 EP 92121543 A EP92121543 A EP 92121543A EP 92121543 A EP92121543 A EP 92121543A EP 0576729 B1 EP0576729 B1 EP 0576729B1
Authority
EP
European Patent Office
Prior art keywords
intake
intake manifold
connection
cylinder head
manifold according
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.)
Expired - Lifetime
Application number
EP92121543A
Other languages
German (de)
English (en)
Other versions
EP0576729A1 (fr
Inventor
Klaus Döhring
Chris Andrews
Tom Boardman
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.)
DOEHRING, KLAUS
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of EP0576729A1 publication Critical patent/EP0576729A1/fr
Application granted granted Critical
Publication of EP0576729B1 publication Critical patent/EP0576729B1/fr
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
    • F02M35/104—Intake manifolds
    • F02M35/112—Intake manifolds for engines with cylinders all in one line
    • 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
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10078—Connections of intake systems to the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10131—Ducts situated in more than one plane; Ducts of one plane crossing ducts of another plane
    • 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
    • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
    • 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
    • F02M35/10314—Materials for intake systems
    • F02M35/10321—Plastics; Composites; Rubbers
    • 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 an intake manifold is known from GB-A-2 173 857.
  • the intake manifold is made of aluminum and comprises several parts, the bypass line being formed by two suction pipe parts connected to one another.
  • the two intake manifold parts which form the intake manifold and limit the bypass line, are attached to the cylinder head of the internal combustion engine.
  • the manufacture of the intake manifold, consisting of the two intake manifold parts, and their assembly are unsatisfactory.
  • an intake manifold is known, the intake flange of which consists of three separately produced parts which are connected to one another in a sandwich construction and fastened to the cylinder head.
  • the intake opening is formed by a bore in the cylinder head, which connects the inlet channel of the cylinder head to the bypass line, which extends in the middle of the three parts and is delimited by the two adjacent parts.
  • the task to be solved by the previously known component is seen in feeding the secondary gas as close as possible to the inlet valve.
  • an internal combustion engine which is operated with diesel fuel and has a crankcase ventilation.
  • the gas mixture emerging from the crankcase is fed into the intake air stream and thereby fed back to the combustion.
  • the gas mixture withdrawn from the crankcase is fed in by means of a distributor in the area of the intake manifold, the distributor being tubular.
  • the number of outlet openings of the distributor corresponds to the number of cylinders, the paths from the connection to the individual intake openings being of different lengths, which is unsatisfactory in terms of optimal combustion, since different amounts of the secondary gas are supplied to the individual cylinders.
  • the invention has for its object to further develop an intake manifold of the known type such that a bypass line for feeding a secondary gas is integrated into the intake manifold, that the intake manifold is inexpensive to manufacture in terms of production technology and economics and that undesirable material accumulations are avoided.
  • the bypass line is formed by a groove, open in the direction of the cylinder head, of the intake flange formed in one piece with the intake pipe, the bypass line being delimited on the side facing the cylinder head by a seal which is formed from an elastomeric material.
  • the advantage here is that the secondary gas is led to the connection and then into the bypass line, which is limited on the one hand by the intake flange and on the other hand in the direction of the cylinder head.
  • the gas passes through the bypass line directly into the intake opening of the internal combustion engine.
  • the bypass line is preferably arranged between the intake pipe and the openings for fastening the intake manifold.
  • the bypass line is particularly easy to manufacture, since the open groove in the direction of the cylinder head, like the rest of the intake manifold, can be removed from one side. Undesirable material accumulations, which are unsatisfactory from a manufacturing point of view, since they lead to different shrinkage, can be avoided in the construction and manufacture of the intake manifold according to the invention.
  • the groove extends directly to the cylinder head and is sealed thereon by a flat, molded part or a liquid seal.
  • the cross section of the bypass line can be optimally adapted to the particular circumstances of the application by the depth of the groove.
  • the bypass line is delimited on the side facing the cylinder head by a seal which is made of an elastomeric material.
  • the elastomeric material can enclose a seal carrier, which preferably consists of a hard plastic, wherein the connection can be formed in one piece with the seal carrier.
  • the seal can be positioned in the groove by an integrally molded holding device, which facilitates the assembly of the intake manifold.
  • the secondary gas can, for example, be vented from the crankcase of the internal combustion engine, the connection being connected to the crankcase ventilation of the internal combustion engine.
  • Another application of the intake manifold can be that the hose connection is connected to an exhaust gas recirculation device or an idle charge control of the internal combustion engine.
  • the secondary gases generated in these areas can be fed back into the machine and used for the combustion process.
  • connection can be arranged symmetrically between the intake pipes of the intake manifold, so that the bypass line consists of at least two sections of equal length.
  • the advantage here is that equal amounts of the secondary gas are fed into the intake pipes assigned to the individual cylinders and the same mixture is therefore available for all cylinders for optimal combustion.
  • the sections of the bypass line for the two middle intake pipes can be at least partially led around them, the two outer intake pipes being connected to the connection in the relatively more direct way.
  • connection can be designed as a hose connection and be made in one piece with the suction flange. This results in good sealing and good performance properties over a long period of use.
  • connection can be formed by at least one opening in the cylinder head.
  • the holding device can be formed, for example, by a holding section of the seal carrier projecting in the direction of the groove, wherein the holding section can be brought into engagement with the groove.
  • Uniform wall thicknesses of the intake manifold and the cross-section of the bypass line can be precisely maintained by using the seal, since the seal can, for example, close part of the groove open in the direction of the cylinder head with the holding device.
  • the intake manifold consists of a polymeric material.
  • the intake manifold is therefore easy to manufacture and has a significantly reduced weight compared to a metallic intake manifold.
  • the intake flange made of plastic can have openings for fastening to the cylinder head, into which non-creeping material bushings are inserted in a non-positive and / or positive manner, are used for example made of sintered metal.
  • the advantage here is that the intake manifold is permanently attached to the cylinder head and relaxation phenomena of the plastic used do not lead to an impairment of the properties of use.
  • the bushes are supported on the one hand directly on the cylinder head and on the other hand on the fastening element, for example on the screw.
  • the bushings can have a toothing which engages with the plastic of the intake manifold. This ensures power transmission between the bushing and flange.
  • FIG. 1 a view of the intake manifold is shown;
  • FIG. 2 shows a detail from the intake manifold according to FIG. 1.
  • FIG. 1 the view of an intake manifold for an internal combustion engine with 4 cylinders is shown, which comprises four intake pipes 1.1, 1.2, 1.3, 1.4 and an intake flange 2.
  • the bypass line 3 is provided with a connection 4, which is designed as a hose connection, and is used to feed a secondary gas into the internal combustion engine.
  • the connection 4 is connected to the crankcase of the internal combustion engine for ventilation.
  • the bypass line 3 is formed by a groove 5 in the intake flange 2, which is open in the direction of the cylinder head for easier manufacture.
  • the hose connection is formed in one piece with the intake flange 2 and connected to one end of the groove 5.
  • the groove 5 extends from the connection 4 to the intake manifold 1 of the intake manifold.
  • connection 4 is arranged symmetrically between the intake pipes 1.1 to 1.4 and the bypass line 3 is divided into four sections 3.1 to 3.4 of equal length.
  • the two intake pipes 1.2, 1.3 closest to the connection 4 are connected to the crankcase ventilation via the sections 3.2, 3.3, which at least partially extend along the circumference of the intake pipes 1.2, 1.3.
  • the sections 3.1, 3.4 of the bypass line 3, which lead from the connection 4 into the outer intake pipes 1.1, 1.4, have the same length as the adjacent sections 3.2, 3.3.
  • a seal 6 made of elastomeric material is provided to seal the intake flange 2 from the cylinder head.
  • the seal 6 comprises a seal carrier (9) made of a hard plastic, which is partially enclosed by elastomeric material.
  • the seal carrier 9 is positioned with a projection 9.1 in the groove 5.
  • the hose connection can be formed in one piece with the seal carrier 9.
  • Different configurations of the seal 6, for. B. without seal carrier 9.1 when using a connection 4, which is formed by an opening in the cylinder head, are also possible.
  • the groove 5 is arranged between the intake pipe 1 and the opening 7. The wall thicknesses of the intake manifold are essentially the same, so that undesirable material accumulations are avoided.
  • the bushing 8 which is inserted in the opening 7 in a non-positive and / or positive manner, consists in this exemplary embodiment of brass.
  • the bushing 8 has a surface structure in a partial region of its axial extent for secure fixing within the opening 7.

Claims (13)

  1. Collecteur d'admission pour un moteur à combustion interne avec une culasse, comprenant au moins une tubulure d'admission (1) pourvue d'une bride d'aspiration (2) permettant une fixation étanche au gaz sur la culasse, une conduite de dérivation (3) pour l'alimentation d'un gaz secondaire dans une ouverture d'admission du moteur à combustion interne étant prévue, le gaz pouvant être alimenté dans la conduite de dérivation (3) au moyen d'un raccord (4) et le raccord (4) étant relié à l'une des extrémités de la conduite de dérivation (3) tandis que l'ouverture d'admission est reliée à l'autre extrémité, la conduite de dérivation (3) étant formée par une gorge (5) de la bride d'aspiration (2) ouverte en direction de la culasse et la conduite de dérivation (3) étant limitée, sur le côté tourné vers la culasse, par une garniture d'étanchéité (6), caractérisé en ce que la tubulure d'admission (1) est formée d'un seul morceau avec la bride d'aspiration (2) et en ce que la garniture d'étanchéité (6) est positionnée dans la gorge (5) et est formée d'une matière élastomère.
  2. Collecteur d'admission selon la revendication 1, caractérisé en ce que la garniture d'étanchéité (6) est formée d'une matière élastomère entourant un support de garniture (9).
  3. Collecteur d'admission selon la revendication 2, caractérisé en ce que le raccord (4) est formé d'un seul morceau avec le support de garniture (9).
  4. Collecteur d'admission selon la revendication 3, caractérisé en ce que le support de garniture (9) est pourvu, dans la zone de la conduite de dérivation (3), d'au moins un dispositif de maintien.
  5. Collecteur d'admission selon l'une des revendications 1 à 4, caractérisé en ce que le raccord (4) communique avec le reniflard d'aération du carter du moteur à combustion interne.
  6. Collecteur d'admission selon l'une des revendications 1 à 4, caractérisé en ce que le raccord (4) est relié à un dispositif de recirculation des gaz d'échappement.
  7. Collecteur d'admission selon l'une des revendications 1 à 4, caractérisé en ce que le raccord (4) est relié à un dispositif de réglage de mélange de ralenti.
  8. Collecteur d'admission selon l'une des revendications 1 à 7, comprenant au moins deux tubulures d'admission, caractérisé en ce que le raccord (4) est situé de manière symétrique entre les tubulures d'admission (1.1, 1.2) et en ce que la conduite de dérivation (3) est formée d'au moins deux segments (3.1, 3.2) de même longueur.
  9. Collecteur d'admission selon l'une des revendications 1 à 8, caractérisé en ce que le raccord (4) est formé comme un raccord de tuyau et en ce que le raccord de tuyau est exécuté d'un seul morceau avec la bride d'aspiration (2).
  10. Collecteur d'admission selon l'une des revendications 1 à 8, caractérisé en ce que le raccord (4) est formé par au moins une ouverture dans la culasse.
  11. Collecteur d'admission selon l'une des revendications 1 à 10, caractérisé par l'utilisation d'une matière polymère.
  12. Collecteur d'admission selon la revendication 11, caractérisé en ce que la bride d'aspiration (2) est pourvue de découpures (7) pour la fixation sur la culasse et en ce que, dans ces découpures (7), sont insérées, sous l'effet de l'adhérence et/ou par conjugaison de forme, des douilles (8) faites d'un matériau ne subissant pas le fluage.
  13. Collecteur d'admission selon la revendication 12, caractérisé en ce que les douilles (8) sont faites d'un métal fritté.
EP92121543A 1992-07-03 1992-12-18 Collecteur d'admission pour un moteur à combustion interne avec une culasse Expired - Lifetime EP0576729B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4221913A DE4221913C1 (de) 1992-07-03 1992-07-03 Ansaugkrümmer für eine Verbrennungskraftmaschine mit einem Zylinderkopf
DE4221913 1992-07-03

Publications (2)

Publication Number Publication Date
EP0576729A1 EP0576729A1 (fr) 1994-01-05
EP0576729B1 true EP0576729B1 (fr) 1995-11-08

Family

ID=6462430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92121543A Expired - Lifetime EP0576729B1 (fr) 1992-07-03 1992-12-18 Collecteur d'admission pour un moteur à combustion interne avec une culasse

Country Status (4)

Country Link
US (1) US5341772A (fr)
EP (1) EP0576729B1 (fr)
JP (1) JP2643774B2 (fr)
DE (2) DE4221913C1 (fr)

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US5522362A (en) * 1994-05-10 1996-06-04 Sanshin Kogyo Kabushiki Kaisha Idle control arrangement for engine
DE19523870A1 (de) * 1995-06-30 1997-01-02 Mann & Hummel Filter Ansaugeinrichtung aus thermoplastischem Kunststoff
EP0765995B2 (fr) † 1995-07-04 2001-09-19 Benteler Ag Dispositif de connection de gaz d'échappement à un bloc moteur
US5595151A (en) * 1995-12-11 1997-01-21 Siemens Electric Limited Releasable connection for molded parts
DE19546545B4 (de) * 1995-12-13 2006-01-12 Mahle Filtersysteme Gmbh Saugrohrmodul
DE19608066C1 (de) * 1996-03-02 1997-06-05 Daimler Benz Ag Kurbelraumentlüftung für eine Brennkraftmaschine
US5813375A (en) * 1996-03-11 1998-09-29 Siemenselectric Limited Method and system for distributing vapors or gases to each cylinder of a multicylinder engine
DE19652748C1 (de) * 1996-12-18 1997-12-18 Bosch Gmbh Robert Schraubhülse zur Vorzentrierung
DE10045636B4 (de) * 2000-09-15 2012-04-12 Audi Ag Vorrichtung zum Führen eines sekundären Gases
DE10131004A1 (de) * 2001-06-27 2003-01-09 Mann & Hummel Filter Ansaugvorrichtung für eine Brennkraftmaschine mit Kurbelgehäuseentlüftung
US6840204B1 (en) * 2002-11-25 2005-01-11 Hayes Lemmerz International, Inc. Mounting system for an air intake manifold assembly
US7032579B2 (en) * 2003-08-21 2006-04-25 Mazda Motor Corporation Exhaust gas recirculation device of engine
JP4535862B2 (ja) 2004-12-20 2010-09-01 トヨタ自動車株式会社 樹脂成形部品
US8020541B2 (en) 2009-12-15 2011-09-20 GM Global Technology Operations LLC Positive crankcase ventilation system
DE102011111124A1 (de) * 2011-08-20 2013-02-21 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Befestigungseinrichtung zur Befestigung eines Einlasskrümmers an einem Zylinderkopf
CN104074645A (zh) * 2014-07-14 2014-10-01 宁波浙成科技咨询有限公司 一种发动机塑料进气歧管的密封垫
CN107061075B (zh) * 2017-05-09 2019-12-31 安徽江淮汽车集团股份有限公司 一种进气歧管总成

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Also Published As

Publication number Publication date
JP2643774B2 (ja) 1997-08-20
US5341772A (en) 1994-08-30
DE59204268D1 (de) 1995-12-14
JPH0674113A (ja) 1994-03-15
DE4221913C1 (de) 1994-01-27
EP0576729A1 (fr) 1994-01-05

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