EP0527683B1 - Einlasssystem für Brennkraftmaschinen - Google Patents

Einlasssystem für Brennkraftmaschinen Download PDF

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Publication number
EP0527683B1
EP0527683B1 EP19920402271 EP92402271A EP0527683B1 EP 0527683 B1 EP0527683 B1 EP 0527683B1 EP 19920402271 EP19920402271 EP 19920402271 EP 92402271 A EP92402271 A EP 92402271A EP 0527683 B1 EP0527683 B1 EP 0527683B1
Authority
EP
European Patent Office
Prior art keywords
fixed
duct elements
induction circuit
engine
assembly
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
EP19920402271
Other languages
English (en)
French (fr)
Other versions
EP0527683A1 (de
Inventor
Robert Pillon
Pierre-Alain Weite
Laurent Polac
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of EP0527683A1 publication Critical patent/EP0527683A1/de
Application granted granted Critical
Publication of EP0527683B1 publication Critical patent/EP0527683B1/de
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
    • F02M35/10144—Connections of intake ducts to each other or to another device
    • 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
    • F02M35/10111—Substantially V-, C- or U-shaped ducts in direction of the flow path
    • 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
    • F02M35/10124—Ducts with special cross-sections, e.g. non-circular cross-section
    • 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
    • F02M35/10137—Flexible ducts, e.g. bellows or hoses
    • 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
    • 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

Definitions

  • the present invention relates to an air intake or gas mixture circuit for internal combustion engines, in particular for motor vehicles.
  • an internal combustion engine comprises several combustion chambers each provided with at least one inlet orifice periodically closed by a valve.
  • the combustion air intake circuit supplying the combustion chambers mainly comprises a conduit connecting an inlet mouth to an intake manifold which comprises a distributor or plenum and several arms which respectively conduct part of the gas mass towards said orifice of each of the combustion chambers.
  • the dimensions of the collector, length of the conduits and volume of the plenum, are directly related to the performance of the engine. This results in a part of large size and / or mass, placed in overhang and rigidly connected to the cylinder head for sealing reasons.
  • the intake circuit Due to its function and its location, the intake circuit is the seat of important vibrations. In fact, the excitations of the engine block, combustion noises or distribution shocks, have a direct impact on the intake circuit. Furthermore the circuit is subjected to pulsations of air flow to the valves which propagate along the intake manifold at the speed of sound, to reach the air intake and thus create "mouth noise”. Finally inside the intake circuit, the air stream is the seat of pressure pulsations which vibrate at their frequencies the walls of the ducts.
  • a first solution consists in reinforcing the rigidity of the intake circuit and of the manifold in particular, by ribbing or bending, so as to push the resonant frequencies beyond the operating range of the engine. If it is then possible to get rid of low frequency modes, it is however not possible to have an intake circuit of sufficient rigidity to avoid high frequency vibrations, generating audible noise.
  • a second solution consists in inserting a flexible connection in the intake circuit so as to effect decoupling.
  • the publication Fr 2.315.012 describes in particular a device for flexible mounting of the intake manifold on an internal combustion engine, characterized in that the manifold is sandwiched between at least two thicknesses of elastomer, one between the manifold and the cylinder head, the other between the manifold and each fixing screw, so as to avoid any direct metallic contact between the intake manifold and the cylinder head.
  • Another possibility of decoupling consists in dividing the collector into two parts at the level of the conduits, the first part is rigidly fixed on the cylinder head and the connection with the second part is made for each conduit thanks to a cylindrical sleeve made of deformable material. The decoupling generated by this device turns out to be more or less good depending on the direction of the stresses, the stiffness of the sleeves being very different in shear, bending or even traction.
  • the object of the present invention is to produce an intake circuit which avoids the aforementioned drawbacks, and provides the engine with quieter operation.
  • the intake circuit for an internal combustion engine comprises a manifold formed by a distributor and a plurality of arms each intended to supply one of the engine cylinders, each arm being formed by two elements of ducts respectively fixed to the plenum and to the cylinder head of the engine.
  • the intake circuit is characterized in that the opposite ends of the duct elements of each of the arms are integral with lateral assembly flanges and in that a flexible seal is interposed between said flanges, said seal acting as a filter to prevent the propagation of vibrations from the engine to the manifold.
  • said flexible seal is formed of a body, made of flexible materials capable of damping vibrations such as elastomer, said body having a passage in accordance with the orifices of the duct elements including it ensures the junction.
  • said body is provided with fixing screws projecting from each of the bearing faces, each of these screws being able to be inserted in a bore carried by the opposite assembly flange.
  • said body comprising, in the vicinity of its bearing faces, metal reinforcements.
  • said screws are fixed to said reinforcements.
  • said reinforcements have at the level of the screws bosses which are flush with the bearing faces of said body.
  • said body has at the outlet of the passage) extra thicknesses or lips intended to ensure sealing when the said body is clamped between the flanges.
  • the section of said passages evolves along the thickness of said body.
  • a single seal is interposed between the duct elements of the set of arms, said seal then being formed by a single-piece body having as many passages as there are arms.
  • all of the various duct elements fixed to the plenum are integral with the same lateral assembly flange.
  • all of the various duct elements fixed to the cylinder head of the engine are integral with the same lateral assembly flange.
  • FIG. 1 the intake circuit of an internal combustion engine 1, consisting of a four-cylinder engine, diesel or spark ignition.
  • Each of the four combustion chambers has an inlet adapted to be closed by a valve.
  • the intake circuit connects an air inlet mouth, not shown, to the intake orifice of each of the chambers, and is made up for this purpose in particular of a manifold comprising a distributor or plenum 2 extended by four separate arms. 3 each supplying one of the cylinders.
  • Each arm 3 is formed by two conduit elements 3a and 3b respectively fixed to the plenum 2 and to the cylinder head of the engine block 1.
  • the opposite ends of the conduit elements 3a and 3b are assembled with the interposition of a flexible joint 4 acting as a filter to prevent the propagation of vibrations from the motor to the collector.
  • the opposite ends of the conduit elements 3a and 3b are integral with lateral flat assembly flanges 31a and 31b respectively. Between the two substantially rectangular flat flanges 31a and 31b is interposed the flexible seal 4.
  • the flexible seal mainly consists of a one-piece plate or body 41 of shape substantially identical to the flat flanges 31a and 31b.
  • the body 41 has four passages 42 aligned along the longitudinal axis, these passages 42 being arranged in accordance with the orifices 32a and 32b of the duct elements 3a and 3b forming the arms 3 of the manifold.
  • the body 41 is provided with fixing screws 45 projecting from the two bearing faces 4a and 4b.
  • the assembly flanges 31a and 31b have holes, respectively 35a and 35b, for the passage of the screws 45. The clamping of the flanges is then carried out by means of the nuts 25.
  • Figure 3 specifies the embodiment of the seal 4.
  • the body 41 is made of molded elastomer, or bonded, on two separate plates of stamped sheet steel, 43a and 43b, each extending in the vicinity of a side face support, respectively 4a and 4b.
  • the plates 43a, 43b also ensure the anchoring of the fixing screws 45, to do this each screw is inserted into a calibrated orifice carried by the receiving plate, the threaded end projecting outwards, until the screw heads be in contact with the plates, the screw heads are then welded to the latter.
  • the air passages 42 formed through the body 41, have an inlet and outlet section perfectly suited to the upstream 3a and downstream 3b conduits, of which they provide the junction.
  • the rectangular section shown can thus also be circular or elliptical, it is also possible to vary the section in the very thickness of the plate 41, for example to form a convergent.
  • the body 41 has, at the outlet of each orifice 42, an additional thickness or lip 44 intended to ensure sealing during tightening. These sealing lips 44 make it possible to reduce the requirements of flatness and surface condition of the flat flanges 31a and 31b integral with the duct elements.
  • the presence of the reinforcements 43 inside the plate 41 reinforces the rigidity and the flatness of the bearing surfaces, which makes it possible to use only a limited number of fixing screws.
  • the plates have bosses 47, obtained by stamping, which are flush with the bearing faces. The function of these bosses 47 is to control the tightening torque and to prevent any risk of loosening by creep of the elastomer; moreover thanks to these bosses, only the sealing lips 44 are crushed during the assembly of the flanges, the body 41 of the seal not being deformed.
  • the flexible joint integral with one of the two flat flanges of the manifold, on which it is glued or molded.
  • the flexible plate then comprises only a single sheet metal frame embedded in the elastomer in the vicinity of the only free surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Gasket Seals (AREA)
  • Characterised By The Charging Evacuation (AREA)

Claims (6)

  1. Einlaßleitung für einen Verbrennungsmotor 1, mit einem Krümmer bestehend aus einem Plenum 2 und einer Vielzahl von Armen 3 zur Versorgung eines jeden Zylinders des Motors, wobei jeder Arm 3 aus zwei Leitungsabschnitten 3a, 3b besteht, die am Plenum 2 bzw. am Zylinderkopf des Motors 1 befestigt sind, wobei die sich gegenüberliegenden Enden der Leitungsabschnitte 3a, 3b eines jeden Armes 3 mit seitlichen Verbindungsflanschen 31a, 31b fest verbunden sind und mit einer weichen Dichtung 4, die einen Durchlaß 42 entsprechend den Öffnungen 32a, 32b in den Leitungsabschnitten 3a, 3b aufweist, deren Verbindung sie gewährleistet und die zwischen den Flanschen 31a, 31b angeordnet ist, wobei die Dichtung 4 aus einem Körper 41 aus weichem Material besteht, das schwingungsdämpfend ist und in der Nähe seiner Auflageflächen 4a, 4b metallische Beschläge 43a, 43b enthält, die mit Befestigungsschrauben 45 verbunden sind, die sich in hervorspringender Weise bis in die Auflageflächen 4a, 4b erstrecken, wobei jede Schraube 45 in eine Bohrung 35a, 35b im gegenüberliegenden Verbindungsflansch 31a, 31b einsetzbar ist.
  2. Einlaßleitung nach Anspruch 1, dadurch gekennzeichnet, daß die Beschläge 43a, 43b auf Höhe der Schrauben 45 Erhöhungen 47 aufweisen, welche mit den Auflageflächen 4a, 4b des Körpers fluchten.
  3. Einlaßleitung nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, daß der Körper 41 am Ausgang des Durchlasses 42 Verdickungen oder Lippen 44 aufweist, welche die Abdichtung beim Einklemmen des Körpers 41 zwischen den Flanschen 31a, 31b gewährleisten.
  4. Einlaßleitung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Querschnitt der Durchlässe 42 in Richtung der Dicke des Körpers 41 sich verändert.
  5. Einlaßleitung nach einem der Ansprüche 1 bis 4, dädurch gekennzeichnet, daß eine einzige Dichtung 4 zwischen den Leitungsabschnitten 3a, 3b der Gesamtheit der Arme 3 angeordnet ist, wobei diese Dichtung aus einem einstückigem Körper 41 besteht, der ebenso viele Durchlässe aufweist, wie Arme vorhanden sind.
  6. Einlaßleitung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Gesamtheit der verschiedenen Leitungsabschnitte 3a, die am Plenum 2 befestigt sind und/oder die Gesamtheit der verschiedenen Leitungsabschnitte 3b, die am Zylinderkopf des Motors 1 befestigt sind, mit demselben seitlichen Verbindungsflansch 31a, 31b verbunden sind.
EP19920402271 1991-08-13 1992-08-12 Einlasssystem für Brennkraftmaschinen Expired - Lifetime EP0527683B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9110267 1991-08-13
FR9110267A FR2680388B1 (fr) 1991-08-13 1991-08-13 Circuit d'admission pour moteur a combustion interne.

Publications (2)

Publication Number Publication Date
EP0527683A1 EP0527683A1 (de) 1993-02-17
EP0527683B1 true EP0527683B1 (de) 1996-01-10

Family

ID=9416162

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920402271 Expired - Lifetime EP0527683B1 (de) 1991-08-13 1992-08-12 Einlasssystem für Brennkraftmaschinen

Country Status (3)

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EP (1) EP0527683B1 (de)
DE (1) DE69207508T2 (de)
FR (1) FR2680388B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1195513A3 (de) * 1998-06-24 2002-05-15 Siemens Canada Limited Gehäusesystem für eine Saugrohranlage
DE10346005B4 (de) 2003-10-02 2006-04-13 Siemens Ag Luftansaugmodul für eine Brennkraftmaschine mit Impulsaufladung
EP3353406B1 (de) * 2015-09-22 2022-07-27 Cummins, Inc. Segmentierte verteilerkopfverbinder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372120A (en) * 1979-10-26 1983-02-08 General Motors Corporation V-Type engine intake with vibration isolated manifold connector
US4901681A (en) * 1988-08-26 1990-02-20 General Motors Corporation Motion isolated engine manifold
JPH02125955A (ja) * 1988-11-04 1990-05-14 Texas Instr Japan Ltd 流体供給装置及び熱的絶縁装置

Also Published As

Publication number Publication date
FR2680388A1 (fr) 1993-02-19
FR2680388B1 (fr) 1995-03-24
EP0527683A1 (de) 1993-02-17
DE69207508T2 (de) 1996-08-22
DE69207508D1 (de) 1996-02-22

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