EP0827567B1 - Saugrohranlage mit geringelten luftrohren für brennkraftmaschinen - Google Patents

Saugrohranlage mit geringelten luftrohren für brennkraftmaschinen Download PDF

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Publication number
EP0827567B1
EP0827567B1 EP96917521A EP96917521A EP0827567B1 EP 0827567 B1 EP0827567 B1 EP 0827567B1 EP 96917521 A EP96917521 A EP 96917521A EP 96917521 A EP96917521 A EP 96917521A EP 0827567 B1 EP0827567 B1 EP 0827567B1
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EP
European Patent Office
Prior art keywords
tube
sleeve
outlet
envelope
cradle
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
EP96917521A
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English (en)
French (fr)
Other versions
EP0827567A1 (de
Inventor
Micha[L Pontopiddan
Michele Sonori
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.)
Marelli France SAS
Original Assignee
Magneti Marelli France SAS
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Publication date
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Publication of EP0827567A1 publication Critical patent/EP0827567A1/de
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Anticipated expiration legal-status Critical
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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
    • F02M35/10026—Plenum chambers
    • F02M35/10039—Intake ducts situated partly within or on the plenum chamber housing
    • 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
    • F02M35/10314—Materials for intake systems
    • F02M35/10321—Plastics; Composites; Rubbers
    • 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
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10347—Moulding, casting or the like
    • 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
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10354—Joining multiple sections together
    • F02M35/1036—Joining multiple sections together by welding, bonding or the like
    • 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
    • F02M35/10085—Connections of intake systems to the engine having a connecting piece, e.g. a flange, between the engine and the air intake being foreseen with a throttle valve, fuel injector, mixture ducts or the like
    • 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
    • F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
    • 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 internal combustion engine fitted with an installation fuel supply preferably by injection, particular of the type called "multipoint", comprising, for each engine cylinder, at least one injector which injects fuel in a manifold suction line air intake to the engine, directly upstream of the engine cylinder head and intake valve (s) corresponding cylinder.
  • the outer part, relative to the center of curvature of the bent tubes, of all the air tubes is formed by the hollow molded impression bottoms in each of the two half-shells, and which extend when the half-shells are closed against each other the other.
  • the inner part of all the air tubes are formed by the impression bottoms molded into at least two molded inserts, generally in the same material as the half-shells, for example in moldable synthesis, preferably thermoplastic, such as polyamide, and which can be loaded with reinforcing fibers, and each reported in one half-shells respectively, so that the footprints inserts also extend during the joining half shells against each other.
  • a collector thus produced is suitable for the equipment of a diesel engine, due to the low pressure gradient between the atmosphere and the plenum of the collector, in operation of the motor.
  • a seal must be made between the inserts and the half-shells by fitting cords of suitable polymerizable material, which is a long and delicate operation, adding to the difficulty of realization with low tolerances of the parts to assemble to precisely define the air tubes.
  • the problem underlying the invention is to propose a collector of an economic achievement, essentially in thermomouldable and semi-modular synthesis, because acoustically adaptable to a whole family of engines of different displacements by dimensional adjustment, in particular of the diameter and the length of the air tubes.
  • each tube is an external face tube corrugated, preferably with parallel rings, and internal face smooth delimiting a central passage of cross section constant in shape and in surface, so that the tube has great flexibility or transverse flexibility, but low flexibility or axial flexibility.
  • Such monoblock air tubes being by nature waterproof, the need to make joint cords sealing along the generators disappears.
  • the rings of the corrugated external face of such tubes keep the shape and surface constant the cross section of the central passage, participating maintaining the acoustic impedance of the tubes, while providing good flexibility or suppleness in direction radial or transverse, allowing bending of the tubes as desired, while their smooth internal surface limits pressure losses and gives the tubes a low flexibility or axial flexibility, necessary to maintain their acoustic impedance.
  • each tube is made of synthesis, preferably moldable, such as thermoplastic, and cut, perpendicular to its longitudinal axis, at the desired length, to give the collector an impedance acoustic tuned to the engine, in an element tubular supplied in great length, and preferably of circular section, so that the tubular element is obtained at a very favorable cost, compared to others possible solutions for making waterproof tubes.
  • the annular conformation of the external face of the tube can be defined by one or more ribs helical wound in the outer face of the tube, its inlet to outlet, the corrugated outer face of each tube is advantageously a surface of cylindrical revolution at corrugated generator before the tube is bent at the desired shape, to simultaneously benefit from a large transverse flexibility but very low flexibility axial.
  • the collector envelope may consist of, known manner, of two half-shells of complementary shapes corresponding to the shape of the envelope and molded, preferably in moldable synthetic material, preferably thermoplastic, with fixing flanges on their peripheral edges in a joint plane, the half-shells being closed and fixed against each other at level of their fastening flanges, for example by welding, preferably by vibration, in which case it is advantageous that each tube is fixed only by its ends with half shells.
  • each tube is advantageously fixed to a half-shell using of a sleeve which is partly force-fitted into the corresponding end of the tube and retained on said half-shell by a part of sleeve external to the tube.
  • the sleeve has, on the external face of its part which is fitted at one end corresponding tube, at least one peripheral redent anchor, which is formed at the axial end, facing the said end of the tube, of a surface substantially frustoconical with small base facing the central part of the tube, several axially offset redents preferably being formed in this way on the sleeve.
  • the latter advantageously comprises at least one projecting stop substantially radial towards the outside to limit its fitting into a corresponding end of the tube.
  • the sleeve or each of the two connecting sleeves of a tube is molded from a material of synthesis, which is preferably a thermosetting material.
  • an air inlet sleeve fitted into an inlet end of a tube, is shaped, in its external part at said inlet end of the tube, in a tulip converging towards the inside of the tube and provided with minus one fixing lug to that of the two half-shells which is not provided with the mounting flange having the feed opening at which said tube is connected by its output, the fixing being for example provided by heat sealing or by rolling at the fixing lug (s).
  • each tube is advantageously connected by an air outlet sleeve, fitted into the end of outlet of the tube, to that of the half-shells which is provided with said fixing flange having said opening to which said tube is so connected waterproof by its outlet, said connection means watertight including a tubular manifold tip, in projection on said flange on the side opposite to the cylinder head, in the extension of said corresponding feed opening, and in which tip part of said sleeve outlet, which is external to the tube, is retained with interposition at least one flexible seal between said external part of the outlet sleeve and said end piece collector.
  • a good seal can be ensured using a single flexible gasket for each tube, if gasket, mounted around the part of the outlet sleeve corresponding which is external to the tube and retained in the nozzle corresponding collector, is molded in shape, preferably made of elastomer, with a cross section corresponding to that of the space available between, on the one hand, said outlet sleeve, and, on the other hand, said cradle and said cover, and so that the seal is compressed radially between these three elements.
  • the corresponding manifold tip advantageously has a substantially cross section of the same shape as that of said feed opening, and the corresponding outlet sleeve has a central passage having a cross section of form evolutionary, varying gradually from the section shape of the manifold tip, in the part of the outlet sleeve which is external to the tube, to the cross-sectional shape of the tube, in the part of the outlet sleeve which is fitted into the outlet end of this tube, so that the sleeve of outlet constitutes an adapter sleeve ensuring the transition between the shapes of the tip sections manifold and air tube.
  • the tubes can be grouped at least in pairs of tubes joined on at least part of their length, and, in order to limit the transverse displacements of tubes or groups of tubes attached to the envelope, housing can be delimited by recesses in the internal face of the envelope, and parts of tubes or joined parts of tubes can be accommodated in these recesses, possibly bordered by protruding ribs on the inner face of at least one of the half-shells constituting the envelope.
  • the manifold of Figures 1 and 2 for a motor with four cylinders in line, includes a rigid casing 1, in moldable and heat-sealable synthetic material such as a polyamide possibly reinforced with reinforcing fibers, and made up of two half-shells 2 and 3, each molded in this material, having complementary shapes which correspond to the shape of envelope 1.
  • a rigid casing 1 in moldable and heat-sealable synthetic material such as a polyamide possibly reinforced with reinforcing fibers, and made up of two half-shells 2 and 3, each molded in this material, having complementary shapes which correspond to the shape of envelope 1.
  • the two half-shells 2 and 3 close against each other, by their peripheral edges, to reconstitute the shape of envelope 1, and are secured to each other in a joint plane P, defined by fastening flanges 4 and 5, projecting outwards on their edges, by vibration welding at these flanges 4 and 5, after mounting in the half-shells 2 and 3 of four tubes air intake (one per engine cylinder), grouped in two pairs of joined tubes, as shown in the figure 2, and their sleeves as described below.
  • the flange 6 has, for each cylinder of the motor, a feed opening 7, coming from molding, circular or oblong cross section, which opens out on one side in the flat face 8 for fixing the flange 6 on the engine cylinder head and, on the other side, inside the half-shell 3, lower in FIG.
  • the flange 6 has also, for each cylinder, a housing 9 for a fuel injector, this housing 9 opening in the face 10 of the flange 6 which is opposite to the face 8 for fixing to the cylinder head, and outside the half-shell 3, of a part, and, on the other hand, each housing 9 opens into a corresponding feed opening 7.
  • the flange 6 finally has holes 11, also from molding like openings 7 and housings 9, for passage of collector fixing elements on the cylinder head.
  • the collector also includes a curved tube air intake for each cylinder, or, as already mentioned, four air tubes grouped into two pairs of tubes joined together over part of their length.
  • Each tube such as 12a or 12b of the pair of tubes of FIG. 2, is a curved tube, obtained by cutting, perpendicular to its longitudinal axis, a length determined, to give the tube 12a or 12b an impedance acoustic tuned to the engine, in a large tube length in thermoplastic, having an internal face 13 smooth, delimiting a central passage of cross section of constant shape and surface, for example circular, and a corrugated external face 14, with peripheral rings in planes substantially parallel to each other and perpendicular to the axis of the tube, before the tube section cut is not bent to the desired shape by the closure half-shells 2 and 3, each of which each tube 12a or 12b is fixed only by one respectively of its inlet ends such as 15a and outlet ends 16a or 16b.
  • a light tube 12a or 12b is thus produced, with a thin wall and waterproof, having great flexibility or transverse flexibility or radial, and low flexibility or flexibility axial, so that it can be bent to the desired shape without losing the constant shape and surface of the section transverse of its central passage with smooth wall, and without vary significantly in length, which ensures losses of practically constant load and acoustic impedance.
  • Each tube such as 12a or 12b is bent in a loop almost complete in the plan of figure 1, on a large part of its length substantially from its entrance such as 15a, and its downstream part is further angled or bent in a direction perpendicular to the plane of Figure 1, as shown in Figure 2.
  • two tubes such as 12a and 12b grouped into a pair of tubes to supply each one respectively of two adjacent cylinders, can be joined on much of their length substantially from their inputs such as 15a, while their outputs 16a and 16b (see Figure 2) are spaced from each other to each be tightly connected to one respectively two adjacent supply openings 7 one of the other in the flange 8 to supply the two cylinders corresponding contiguous.
  • each tube 12a or 12b is fixed to the upstream half-shell 2 by a air inlet sleeve such as 17a, while the end outlet 16a or 16b of the tube is connected to the half-shell downstream 3 by an air outlet sleeve 18a or 18b, each of sleeves 17a, 18a or 18b being preferably molded in a synthetic material, preferably thermosetting.
  • the inlet sleeve 17a comprises a tubular part 19a which is forced into the end inlet 15a of the tube 12a, and which extends towards the front, outside this entry 15a, by a shaped part in volute or inlet tulip 20a converging inwards from tube 12a and downstream.
  • This entrance tulip 20a has a fixing lug 21a, by which the sleeve 17a is fixed to the half-shell 2 at at least one point, by example by heat sealing or by a dowel, as shown schematically in 22a.
  • the internal face of the tubular part 19a is smooth, and substantially in line with the smooth internal face 13 of the tube 12a, while to ensure a good fit axial of the sleeve 17a in the inlet 15a of the tube 12a, the face outer of the tubular part 19a has redents peripherals, as described below for the output 18a with reference to Figure 5.
  • Each outlet sleeve 18a or 18b includes, as shown for the sleeve 18a in FIG. 5, a part tubular 23a which is force fitted into outlet 16a of tube 12a, and which extends backwards or towards downstream, outside this exit 16a, by a part tubular 24a external to tube 12a and retained on the half-shell 3 while being connected with sealing at the opening 7 corresponding as described below.
  • the parts 23a and 24a between which the sleeve 18a has an annular stop 25a projecting radially outwards to limit fitting in outlet 16a of the tube 12a, have a smooth internal face, substantially in the extension of the smooth internal face 13 of the tube 12a, while that the external face of the fitted part 23a has two peripheral and axially offset redents 26a, each formed at the axial end, facing the stop 25a, of a substantially frustoconical surface 27a with small turned base towards the end of the innermost part 23a of the tube 12a, so as to facilitate penetration at the fitting and to ensure good anchoring.
  • This cradle 29a protrudes from the flange 6 on the side opposite the cylinder head of the engine and substantially in the shape of an open semi-cylinder towards the joint plane P, with a cross section of substantially constant surface U-shape, defining a central duct which extends a corresponding opening 7 towards the inside of the half-shell 3.
  • the cradle 29a has a chamber annular delimited by a projecting U-shaped bottom 30a radially inward of the cradle 29a to form a stop opposing the axial outlet of the seal 28 on the external part 24a of the sleeve 18a.
  • the seal seal 28 around the sleeve 18a is compressed radially between the sleeve 18a and the cradle 29a.
  • This cover 31a is molded in synthetic material, preferably thermoplastic, and preferably ultrasonically welded to its around the edges of the cradle 29a. Maintaining the sleeve 18a and the tightness of its connection to the opening 7 corresponding are thus ensured thanks to the seal 28 and to a tubular manifold end, formed by the cradle 29a and the corresponding cover 31a.
  • the seal 28 is molded with a sectional shape such that it occupies radially all the space available between the part 24a of the sleeve 18a, in the center, and the cradle 29a and the cover 31a, at the periphery, being compressed radially between these parts.
  • the part 24a of the sleeve 18a is extended by a half-cylinder-shaped end open towards the bottom of the cradle 29a which receives it, and having, as shown in the section of FIG. 3, a recess complementary to that of the cradle 29a for define a duct of progressively variable section connecting the outlet, for example circular, 16a of the tube 12a to the section, for example oblong, of the opening 7 corresponding, as shown in the drawings.
  • the sleeve outlet 18a is molded so that its central passage presents this corresponding section evolution, the section of the end of the sleeve 18a fitted into the tube 12a always having the same shape as the section of the tube 12a, and the section of the end of the sleeve 18a facing opening 7 having, alone or with the section complementary to the bottom of the cradle 29a which receives it, the same forms as the section of the opening 7.
  • the outlet sleeve 18b of the tube 12b is mounted from the same way with a seal such as 28 in one manifold tip consisting of a similar cradle 29b closed by a corresponding analog cover.
  • the two tubes 12a and 12b are also arranged, by their adjoining parts, in a housing delimited in the half-shell downstream 3 by a recess between ribs 33 in projection on the internal face of this half-shell 3.
  • Tubes 12a and 12b can be joined so that the rings of the external face of one are engaged between each other’s rings, and possibly ribs 33 bordering the housings may have protrusions engaging between the outer rings of the tubes 12a, 12b to better position them in the envelope 1.
  • tubes 12a and 12b flexible transversely are fixed to the casing 1 by their only ends, the mounting of the sleeves 17a and 18a is carried out to give the tubes a general radius of curvature which is slightly less at the radius of curvature of the rounded parts of the half-shells 2 and 3 of envelope 1.
  • the transverse flexibility of the tubes allows, during assembling the half-shells 2 and 3, small displacements alternating relative of these in the perpendicular direction to the radius of curvature of the tubes, thus providing the possibility of assembling the half-shells 2 and 3 for example by vibration welding.
  • a collector is thus obtained, the envelope 1 of which delimits an internal chamber 34, called plenum, which is supplied with engine feed air through an opening (not shown) for example formed in an end face of the envelope 1 parallel to the plane of FIG. 1, this opening being connected to a butterfly body.
  • Each tube such as 12a or 12b mounted in the casing 1 sucks from the air in plenum 34 by its entry such as 15a and transmits this air through its outlet 16a or 16b to an opening supply 7 of the flange 6 to supply a cylinder corresponding.
  • the envelope 1 contains, in its half not shown in Figure 2, two other tubes symmetrical air suction tubes 12a and 12b and mounted in the same way.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Exhaust Silencers (AREA)
  • Characterised By The Charging Evacuation (AREA)

Claims (14)

  1. Saugrohranlage für einen Verbrennungsmotor und mit:
    einem Mantel (1), der einen Sammelraum (34) begrenzt, der mit Versorgungsluft des Motors versorgt wird und mit wenigstens einem Flansch (6) an wenigstens einer Kulasse des Motors versehen ist, wobei der oder die Flansche wenigstens eine Versorgungsöffnung (7) für jeden Zylinder des Motors aufweisen, wobei jede Versorgungsöffnung (7) einerseits in den Mantel (1) und andererseits in einen Befestigungstrichter (8) des Flansches (6) auf der Kulasse mündet, und
    gekrümmten Luftansaugrohren (12a, 12b), jeweils einstückig und wenigstens in gleicher Anzahl wie die Zylinder des Motors und in dem Mantel (1) derart angebracht, daß jedes Rohr einen entsprechenden Zylinder mit Luft versorgt, die es durch seinen Eingang (15a) in den Sammelraum (34) erhält und die es zur entsprechenden Öffnung (7) des entsprechenden Flansches (6) über seinen Ausgang (16a, 16b) weiterleitet, welcher durch dichte Verbindungsmittel mit der Versorgungsöffnung (7) verbunden sind, dadurch gekennzeichnet, daß jedes Rohr (12a, 12b) ein Rohr mit einer geringelten Außenfläche (14) und einer glatten Innenfläche (13), die einen zentralen Durchgang mit konstantem Form- und Oberflächenquerschnitt begrenzt, aufweist, derart, daß das Rohr (12a, 12b) eine große Nachgiebigkeit und Flexibilität in Querrichtung aber eine geringe axiale Nachgiebigkeit oder Flexibilität aufweist.
  2. Saugrohranlage nach Anspruch 1, dadurch gekennzeichnet, daß jedes Rohr (12a, 12b) aus einem synthetischen, vorzugsweise formbaren Material, wie einem Thermoplast, und vorzugsweise von kreisförmigem Querschnitt ist.
  3. Saugrohranlage nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die geringelte Außenfläche (14) jedes Rohrs (12a, 12b) eine Oberfläche mit zylindrischem Umfang und gewellter Mantellinie ist, bevor das Rohr in die gewünschte Form gekrümmt wird.
  4. Saugrohranlage nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Mantel (1) aus zwei Halbkokillen (2, 3) mit komplementären Formen gebildet wird, die der Form des Mantels (1) entsprechen und vorzugsweise aus einem formbaren Synthesematerial, vorzugsweise einem Thermoplast, mit den Befestigungsflanschen (4, 5) an ihren Umfangsrändern in einer Verbindungsebene (P) geformt werden, wobei die Halbkokillen (2, 3) an ihren Befestiungsflanschen (4, 5), z. B. durch Schweißung, vorzugsweise durch Vibrationen, wieder verschlossen und aneinander befestigt werden und jedes Rohr (12a, 12b) nur durch seine Enden (15a, 16a, 16b) an den Halbkokillen (2, 3) befestigt ist.
  5. Saugrohranlage nach Anspruch 4, dadurch gekennzeichnet, daß wenigstens eines der Enden (15, 16a) jedes Rohres (12a) an einer Halbkokille (2, 3) mit Hilfe einer Manschette (l7a, 18a) befestigt ist, die zum Teil (19a, 23a) mit Kraft in das entsprechende Ende (15a, 16a) des Rohres eingedrückt ist und auf der Halbkokille (2, 3) durch einen Teil der äußeren Manschette (20a, 24a) an dem Rohr (12a) gehalten wird.
  6. Saugrohranlage nach Anspruch 5, dadurch gekennzeichnet, daß die Manschette (18a) auf der Außenflächen ihres Abschnitts (23a), der sich in ein entsprechendes Ende (16a) des Rohres (12a) einpresst, wenigstens eine umfängliche Verankerungsstufe (26a) aufweist, die am axialen Ende, zum Ende (16a) des Rohres (12a) gerichtet, mit einer im wesentlichen kegelstumpfförmigen Oberfläche (27a), deren kurze Basis zum zentralen Bereich des Rohrs (12a) hin gerichtet ist, aufweist.
  7. Saugrohranlage nach einem der Ansprüche 5 und 6, dadurch gekennzeichnet, daß die Manschette (18a) wenigstens einen Anschlag (25a) umfaßt, der im wesentlichen radial nach außen vorsteht, um so seine Einpressung in ein entsprechendes Ende (16a) des Rohres (12a) zu begrenzen.
  8. Saugrohranlage nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß die Manschette (17a, 18a, 18b) aus einem synthetischen, vorzugsweise wärmeausgehärteten Material geformt ist.
  9. Saugrohranlage nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, daß wenigstens eine Lufteintrittsmanschette (17a), die in ein Eintritts (15a) eines Rohrs (12a) eingepreßt (19a) ist, in ihrem zum Eintrittsende (15a) des Rohres (12a) außen liegenden Abschnitt einem Trichter (20a) entspricht, der ins Innere des Rohrs (12a) konvergiert und mit wenigstens einem Befestigungsteil (21a) an derjenigen (2) der beiden Halbkokillen (2, 3) versehen ist, die nicht mit dem Befestigungsflansch (6) versehen ist, der die Versorgungsöffnung (17) aufweist, an welcher das Rohr (12a) mit seinem Ausgang (16a) verbunden ist.
  10. Saugrohranlage nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, daß jedes Rohr (12a) durch eine Luftaustrittsmanschette (18a), die in das Austrittsende (16a) des Rohrs (12a) eingepreßt (23a) ist, mit derjenigen (3) der Halbkokillen (2. 3) verbunden ist, die mit dem Befestigungsflansch (6a) versehen ist, welcher die Versorgungsöffnung (7) aufweist, mit welcher das Rohr (12a) über seinen Ausgang (16a) dicht verbunden ist, wobei die dichten Verbindungsmittel einen Rohransatz (29a-31a) der Anlage umfassen, der über den Flansch (6) an der Seite vorsteht, die der Kulasse gegenüber liegt, wobei in der Verlängerung der entsprechenden Versorgungsöffnung (7) und in dem Ansatz ein Abschnitt (24a) der Austrittsmanschette (18a), die außerhalb des Rohres (12a) liegt, unter Einsatz wenigstens eines nachgiebigen Dichtungselements (28) zwischen dem äußeren Abschnitt (24a) der Austrittsmanschette (18a) und dem Ansatz der Anlage (29a-31a) zurück gehalten wird.
  11. Saugrohranlage nach Anspruch 10, dadurch gekennzeichnet, daß der Sammleransatz umfaßt:
    einem Sattel (29a), der einstückig mit der Halbkokille (3) und dem entsprechenden Befestigungsflansch (6) geformt ist, und in im wesentlichen halbzylindrischer Form, dessen inneres Ende an der Halbkokille (3) einen U-förmigen Boden (30a) aufweist, der einen ins Innere des Sattels (29a) vorstehenden Anschlag bildet, und
    eine Abdeckung (3 la), die angesetzt ist, um die Austrittsmanschette (18a) und das bzw. die Dichtungselemente (28), die in dem Sattel (29a) auf jenem angebracht sind, zu halten, wobei die Abdeckung (31a) einen Anschlag (32a) aufweist, der ins Innere des Sattels (29a) und in Bezug zum U-förmigen Boden (30a) des Sattels (29a) vorsteht und an den Rändern des Sattels (29a) vorzugsweise durch Schweißung oder Ultraschall befestigt ist.
  12. Saugrohranlage nach Anspruch 11, dadurch gekennzeichnet, daß sie für jedes Rohr (12a) umfaßt, ein einziges nachgiebiges Dichtungselement (28), das um den Abschnitt (24a) der entsprechenden Austrittsmanschette (18a) angebracht ist, die außerhalb des Rohrs (12a) liegt und in dem entsprechenden Sammleransatz (29a-31a) zurückgehalten wird und formgegossen ist, vorzugsweise aus einem Elastomer, mit einem Querschnitt entsprechend demjenigen des verfügbaren Raumes einerseits zwischen der Austrittsmanschette (18a) und andererseits dem Sattel (29a) und der Abdeckung (31a) und derart, daß das Element (28) radial zwischen diesen drei Elementen zusammengedrückt ist.
  13. Saugrohranlage nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, daß jeder Sammleransatz (29a-31a) einen Querschnitt im wesentlichen in gleicher Form wie derjenige der entsprechenden Versorgungsöffnung (7) aufweist, und daß die entsprechende Austrittsmanschette (18a) einen zentralen Durchgang mit einem Querschnitt in sich erweiternder Form aufweist, der sich mit fortschreitender Querschnittsform des Sammleransatzes (29a-31a) in dem Abschnitt (24a) der Austrittsmanschette (18a), die außerhalb des Rohres (12a) liegt, in Form des Querschnitts des Rohres (12a) und in dem Abschnitt (23a) der Austrittsmanschette (18a), die in das Austrittsende (16a) des Rohrs (12a) eingedrückt ist, verändert.
  14. Saugrohranlage nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß in dem Mantel (1) die Rohre (12a, 12b) wenigstens paarweise zu auf wenigstens einen Abschnitt ihrer Länge zusammengefügten Rohren gruppiert sind und die Querverschiebungen der in dem Mantel (1) zusammengefügten Rohrgruppen durch die Aufnahmen begrenzt sind, die durch die Ausnehmungen in der Innenfläche des Mantels (1) abgegrenzt sind und in welchen die zusammengefügten Abschnitte der Rohre (12a, 12b) aufgenommen sind.
EP96917521A 1995-05-23 1996-05-20 Saugrohranlage mit geringelten luftrohren für brennkraftmaschinen Expired - Lifetime EP0827567B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9506119A FR2734603B1 (fr) 1995-05-23 1995-05-23 Collecteur d'admission a tubes d'air anneles, pour moteur a combustion interne
FR9506119 1995-05-23
PCT/FR1996/000750 WO1996037696A1 (fr) 1995-05-23 1996-05-20 Collecteur d'admission a tubes d'air anneles, pour moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP0827567A1 EP0827567A1 (de) 1998-03-11
EP0827567B1 true EP0827567B1 (de) 2000-04-12

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EP96917521A Expired - Lifetime EP0827567B1 (de) 1995-05-23 1996-05-20 Saugrohranlage mit geringelten luftrohren für brennkraftmaschinen

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US (1) US5964194A (de)
EP (1) EP0827567B1 (de)
DE (1) DE69607752T2 (de)
FR (1) FR2734603B1 (de)
WO (1) WO1996037696A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19729217A1 (de) * 1997-07-09 1999-06-10 Mann & Hummel Filter Luftansaugvorrichtung für Brennkraftmaschinen
US6705268B2 (en) * 2001-09-21 2004-03-16 Basf Aktiengesellschaft Engine noise barrier
US6598581B2 (en) * 2001-12-13 2003-07-29 Visteon Global Technologies, Inc. Metallic coating on a component of an internal combustion engine
US6755897B2 (en) * 2002-10-23 2004-06-29 Siemens Vdo Automotive Inc. Constant velocity radial inflow particle separator
US9394056B2 (en) * 2013-03-16 2016-07-19 The Beoing Company Air duct assembly and method of installing the same
US10874970B2 (en) * 2015-12-15 2020-12-29 Cummins Filtration Sarl Filter element with endcap having rigid reinforcing member
JP6766733B2 (ja) * 2017-04-03 2020-10-14 アイシン精機株式会社 吸気装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2501305A1 (de) * 1975-01-15 1976-07-22 Bayerische Motoren Werke Ag Luftansauganlage fuer brennkraftmaschinen
DE2914172A1 (de) * 1979-04-07 1980-10-16 Bayerische Motoren Werke Ag Luftansauganlage fuer eine mehrzylinder-brennkraftmaschine
DE3219699C2 (de) * 1982-05-26 1984-07-05 Knecht Filterwerke Gmbh, 7000 Stuttgart Luftsammler zur Leistungsabstimmung für einen Verbrennungsmotor
DE3439670A1 (de) * 1984-10-30 1986-05-07 Fa. Carl Freudenberg, 6940 Weinheim Formteil aus pvc
DE4035016B4 (de) * 1989-11-03 2006-06-29 Fa. Andreas Stihl Verbrennungsmotor mit am Zylinder befestigtem Ansaugkrümmer für ein handgeführtes Arbeitsgerät
US5150669A (en) * 1989-11-06 1992-09-29 General Motors Corporation Pressure relief means for integrated induction system
CA2028498A1 (en) * 1989-11-06 1991-05-07 William Bland Ii Rush Integrated induction system
JPH0783132A (ja) * 1993-09-17 1995-03-28 Hitachi Ltd 内燃機関の吸気装置
JP3210825B2 (ja) * 1995-01-14 2001-09-25 ヤマハ発動機株式会社 Ｖ型多気筒エンジンの吸気装置
US5651338A (en) * 1996-03-26 1997-07-29 Pacheco; Allan A. Adjustable induction manifold system

Also Published As

Publication number Publication date
WO1996037696A1 (fr) 1996-11-28
EP0827567A1 (de) 1998-03-11
US5964194A (en) 1999-10-12
DE69607752T2 (de) 2000-11-23
DE69607752D1 (de) 2000-05-18
FR2734603A1 (fr) 1996-11-29
FR2734603B1 (fr) 1997-07-25

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