EP0839273B1 - Collecteur d'admission pour moteur a combustion interne - Google Patents
Collecteur d'admission pour moteur a combustion interne Download PDFInfo
- Publication number
- EP0839273B1 EP0839273B1 EP96919876A EP96919876A EP0839273B1 EP 0839273 B1 EP0839273 B1 EP 0839273B1 EP 96919876 A EP96919876 A EP 96919876A EP 96919876 A EP96919876 A EP 96919876A EP 0839273 B1 EP0839273 B1 EP 0839273B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- cradle
- tubes
- envelope
- outlet
- 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
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Classifications
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
- F02M35/108—Intake manifolds with primary and secondary intake passages
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 can be formed by 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 can be formed by the bottoms molded imprints in two molded inserts, in general in the same material as the half-shells, for example in polyamide loaded with reinforcing fibers, and each reported in one of the half-shells respectively, so that the imprints of the inserts also extend during the joining of the half-shells one against the other. This process therefore makes it possible to form the tubes by cooperation of surfaces presented by at least four molded parts (two half-shells and two inserts) which are associated.
- 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.
- each tube air is either in one piece with the desired shape, as already mentioned above, either made by assembling two complementary halves molded into shape. But this assembly, despite the precautions taken, does not generally not allow to obtain an internal surface of each tube which be completely smooth and continuous, without roughness, from its entry to its exit, except to finish this surface by a special machining, when the geometry of the tubes permits.
- the problem underlying the invention is to propose a collector of an advantageous structure, in particular for the connection of each tube to the manifold fixing flange to the engine cylinder head, the structure being essentially in a thermomouldable, semi-modular plastic, because acoustically adaptable to a whole family of displacement engines different by dimensional adjustment, and capable of being carried out by a more economical manufacturing process.
- the intake manifold according to the invention is characterized in that the internal surface of each tube is smooth, and continues from its entry to its exit and in that each end piece is made with, on the one hand, a cradle in one piece with said mounting flange, and projecting from the side opposite the cylinder head, in the extension of said corresponding feed opening, the cradle being of substantially semi-cylindrical shape, the end internal to said envelope has an annular bottom forming an inwardly projecting stop of the cradle, and, on the other hand, a jumper for holding said tube in said cradle, the rider having a stop protruding towards the inside of the cradle and opposite the annular bottom of the cradle, a ring being attached and fixed around said tube, near its air outlet, said flexible seal being attached around said tube, between said ring and said air outlet of the tube, the outlet end portion of said tube with said ring and said seal sealing being in place in said corresponding
- the characteristic that the internal surface of each tube is smooth and continuous from entry to exit should be understood as meaning that this internal surface has no roughness or unevenness, between two adjacent parts of internal surface, which is greater than about 200 ⁇ m.
- the intake manifold according to the invention is distinguished essentially state-of-the-art collectors by manufacturing air intake tubes and by the connection of each tube to the fixing flange from the manifold to the engine cylinder head.
- the intake manifold according to the invention is advantageously such that its envelope includes two molded half-shells, of shapes complementary to the shape of the envelope, and arranged one against each other and joined to each other by their peripheral rim, in a joint plane, to form the envelope with the tubes between them, each tube being blow molded, and preferably by suction-blowing, in a material thermally moldable plastic, and said fixing flange being in one piece with one of the half-shells.
- each tube is made with a section gradually decreasing downstream on at least part of its length and / or with a converging air inlet, shaped tulip; each tube can be made with a section having substantially the same shape from entry to exit air, and which can be a circular section or, advantageously as specified below, an oblong section.
- the tubes are grouped at least in pairs of tubes attached to at at least part of their length, and the tubes of each group of tubes are fixed in the same half-shell provided a mounting flange with supply openings to which the tubes of said group are connected with sealing, using at least a second jumper which transversely overlaps the joined tubes of said group, in their adjoining part, which is fixed by its ends on said half-shell.
- each tube is made with an oblong section and parallel flats to the major axis of its section, on its opposite opposite faces, and the tubes are grouped together by being joined by their flats.
- the half-shells with their bases, on the one hand, and the second jumpers, on the other hand may be molded plastic parts, and the second jumpers can be fixed on a half-shell corresponding by welding or gluing.
- the tubes can be made curved with a radius of curvature, in the plane containing their axis, lower than that of the envelope, the envelope half-shells being molded of material plastic with clamps on their edges in the joint plane, and the half-shells are secured together to form the envelope by welding, preferably by vibration, at the clamps.
- this geometry of the tubes bent by relation to the geometry of the envelope, as well as the mode of fixing of the tubes in the half-shells, which avoid contact points, and therefore friction between the tubes and the half-shells allow the half-shells to be joined together economically, by vibration welding at the level of their fastening flanges, a known manner, without risk of rupture of the tubes.
- each end piece ensures the retaining a corresponding tube on one of the half-shells which each cradle is integral with.
- seal sealing when the tubes are of section transverse circular, sealing can be ensured between the outlet end portion of each tube and the corresponding end piece by axial compression of said seal sealing, which is cylindrical, by its planar faces end between a flat radial face, facing the tube outlet, tube ring and a radial face flat, facing inward of said envelope, cradle and said flange, said radial faces being substantially perpendicular to the axis of the tube at its exit.
- each cradle and the corresponding jumper are molded so that the tip formed by the cradle and the rider has a cross section gradually evolving from a shape circular, on the side of the mounting flange and its circular feed opening, oblong in shape, complementary to that of the tubes.
- the seal between the end part outlet of each tube and the corresponding nozzle is advantageously provided by radial compression of said seal sealing between, on the one hand, the tube, and, on the other hand, the cradle and the corresponding rider.
- the manifold of Figures 1 and 2 for a motor with four cylinders in line, includes a rigid casing 1, made of moldable and heat-sealable plastic of two half-shells 2 and 3, each molded in this material, having complementary shapes which correspond to the shape of the envelope 1.
- the two half-shells 2 and 3 close against each other, by their edges peripherals, to reconstruct the shape of envelope 1, and are joined to each other in a joint plane P, defined by fastening flanges 4 and 5, in protruding outwards on their edges, by welding vibrations at these flanges 4 and 5, after assembly in the half-shells 2 and 3 of four suction tubes air (one per engine cylinder), grouped in two pairs of attached tubes, as shown in Figure 2 and described below with reference to Figures 6 to 8.
- the flange 6 has, for each cylinder of the motor, a feed opening 7, coming from molding, circular cross section, which opens on one side into the flat face 8 for fixing the flange 6 to the cylinder head of the motor and, on the other side, inside the half-shell 3, lower in FIG.
- the flange 6 also has, for each cylinder, a housing 9 for an injector of fuel, 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, on the one hand, 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 tube 12 in Figure 6, is a curved tube molded in one piece from a material blow molded plastic, or more precisely by the known process of suction-blowing.
- a light, relatively rigid, thin-walled tube 12 and waterproof with smooth internal and external surfaces.
- the internal surface of the tube 12 is smooth and continues from entry to exit. By smooth and continuous, it should be understood that this internal surface does not have roughness or unevenness between two adjacent parts with a surface that is greater than about 200 ⁇ m.
- each tube such as 12 is molded with a volute or tulip shaped air inlet 13 converging downstream, and the cross-sectional area of the tube gradually decreases from its entry 13 to its exit 14, from preferably around 10% of its input cross-section, while that the shape of the section of the tube is constant input 13 to its output 14, and, in this example, is a oblong shape, visible in FIGS. 7 and 8, the wall of each tube having two opposite flats 15 parallel to the major axis 16 of the oblong section of the tube.
- Each tube as that 12 is bent in an almost complete loop in the plane of Figure 6, over most of its length from its entry 13, and its downstream part is more bent or bent in a direction perpendicular to the plan of Figure 6, as shown in Figures 2 and 7.
- two tubes such as 12a and 12b, grouped into a pair of tubes to supply each one of two cylinders respectively adjacent, can be joined by their flats 15 on the most of their length from their entrances 13a and 13b (see Figure 8), while their outputs 14a and 14b (see Figure 7) are separated from each other to be each tightly connected to one respectively two adjacent supply openings 7 one of the other in the flange 8 to supply the two cylinders correspondents.
- each of the tubes 12a and 12b is introduced into a cradle 20a and 20b respectively molded in one piece with the half-shell 3 and the flange 6.
- This cradle 20a, 20b 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 and delimiting a central duct which extends a corresponding opening 7 towards the inside of the half-shell 3.
- each cradle 20a, 20b has an annular chamber delimited by an annular bottom 21a, 21b projecting radially towards the inside of the cradle 20a, 20b, to form a stop opposing the axial exit of the ring 17 and the seal 18 on the outlet end of the tube 12a, 12b.
- the seal 18 (such as 18a, 18b or 18c), around the tube is compressed radially between the tube and the cradle 20a, 20b.
- This jumper 22a, 22b is molded in plastic material and welded by ultrasound on its periphery on the edges of the cradle 20a or 20b. Maintaining the tube and sealing its connection to the corresponding opening 7 are thus ensured thanks to the gasket and a manifold tip, formed by the cradle 20a or 20b and the rider 22a or 22b corresponding, the latter having, as shown on the sections Figures 4 and 5, a recess complementary to that of cradle 20a or 20b to define a section duct progressively variable connecting the oblong outlet 14a or 14b from the tube to the circular section of the opening 7 corresponding, as represented by the section of the figure 3.
- the cradle 20a, 20b as well as the rider 22a, 22b corresponding are molded so that their recesses present this corresponding section evolution.
- the two tubes 12a and 12b are also retained in the downstream half-shell 3 by a second jumper 24, also molded from plastic, which overlaps transversely these two tubes 12a and 12b in their part attached, and is preferably fixed by stoppers in plastic material 25, projecting towards the joint plane P in the half-shell 3, and engaged in orifices at ends of the second jumper 24, to then be crushed thermally on the latter.
- the jumper 24 maintains the tubes 12a and 12b applied against a base 26 of support, formed by an extra thickness of the half-shell 3, projecting towards the interior of the latter.
- tubes 12a and 12b were molded by blowing with a general radius of curvature which is less at the radius of curvature of the rounded parts of the half-shells 2 and 3 of envelope 1, this avoids contacts and friction between the tubes and the half-shell upstream 2, during vibration welding of the two half-shells 2 and 3 against each other, which imposes small relative alternating displacements of the half-shells 2 and 3 causing friction between the flanges 4 and 5 leading to a heat seal.
- the contacts between the tubes and the downstream half-shell 3 are limited to contact with the jumper 24 and the base 25 and in contact with the ring 17 of the outlet end of the tubes 12a, 12b with the tubular end piece constituted by the cradle 20a or 20b and the jumper 22a or 22b, so that we avoid any possible source of disruptive friction between tubes and the two parts of the envelope, which can lead to ruptures during the vibration welding phase, which constitutes the final assembly phase of the collector.
- a collector is thus obtained, the envelope 1 of which delimits an internal chamber 27, called plenum, which is supplied with engine feed air through an opening (not shown) for example formed in the center of a end face of the envelope 2 parallel to the plane of Figure 1, this opening being connected to a body of butterfly.
- Each tube such as 12a or 12b mounted in the envelope 1 draws air into plenum 27 through its inlet 13a or 13b and transmits this air through its outlet 14a or 14b to a supply opening 7 of the flange 6 for supplying a corresponding cylinder.
- envelope 1 contains, in its half not shown in Figure 2, two other symmetrical air intake tubes 12a and 12b and mounted in the same way.
- the tubes 12'a and 12'b are of section transverse circular. However, they are also joined for part of their length and are applied by a jumper 24 'against a support base 26' to inside the downstream half-shell 3 ', the jumper 24' being, as in the previous example, fixed by bolting or heat sealing on pins 25 'of this half-shell 3 '.
- the outlet ends of the tubes 12'a and 12'b are surrounded by a 17 'ring and a seal flexible 18 'and are each connected so watertight at a corresponding opening 7 'of the flange of fixing 6 'to the cylinder head by a tubular end piece.
- the latter consists of a cradle 20'a or 20'b of U-shaped cross section and value constant, with an annular bottom forming a radial stop internal 21'a or 21'b, on the side of the half-shell 3 ', thus than a basically flat rider 22'a or 22'b with a 23'a or 23'b arc-shaped abutment projecting inwards of the cradle 20'a or 20'b and opposite the annular bottom 21'a or 21'b of the latter.
- the manifold tip as well made for each outlet end of a 12'a tube or 12'b is preferably of circular cross-section of diameter constant, with one face, oriented towards the corresponding tube which is flat and perpendicular to the axis of the tube in its outlet end part.
- the cylindrical seal 18 ' is, in this example, compressed axially by its two radial and planar end faces between, of a side, the planar radial face of the ring 17 'which is turned towards the flange 6 'and, on the other side, a radial face flat, facing inward of the 3 'half-shell, in the bottom of the corresponding cradle 20'a or 20'b, on the flange 6 ', these different radial faces being substantially perpendicular to the axis of the tube 12'a or 12'b at its outlet.
- the tubes as the half-shells can be made in one plastic material such as polyamide, loaded with fibers reinforcement.
Abstract
Description
- une enveloppe, délimitant un plenum destiné à être alimenté en air d'alimentation du moteur par une vanne à débit variable, telle qu'un corps de papillon, et munie d'au moins une bride de fixation à une culasse du moteur, la ou lesdites brides présentant au moins une ouverture d'alimentation de chaque cylindre du moteur, chaque ouverture d'alimentation débouchant, d'une part, dans l'enveloppe et, d'autre part, dans une face de fixation de la bride sur ladite culasse, et
- des tubes d'aspiration d'air recourbés, chacun d'une seule pièce à la forme voulue, en nombre au moins égal à celui des cylindres du moteur, et montés dans l'enveloppe, de sorte que chaque tube alimente un cylindre correspondant en air que le tube reçoit par son entrée dans le plenum et que le tube transmet à une ouverture correspondante d'une bride par sa sortie reliée à ladite ouverture d'alimentation par des moyens de raccordement étanches comprenant un embout tubulaire dans lequel la partie d'extrémité de sortie dudit tube est retenue dans ladite enveloppe, avec interposition d'au moins un joint d'étanchéité souple entre le tube et l'embout.
- la figure 1 est une vue en coupe transversale d'un collecteur pour moteur à quatre cylindres en ligne, la coupe étant sensiblement perpendiculaire à l'axe du moteur,
- la figure 2 est une demi-vue en partie en élévation en plan et en partie en coupe de la demi-coquille aval ou inférieure du collecteur de la figure 1, avec une des deux paires de tubes qui sont regroupés et retenus dans cette demi-coquille,
- les figures 3, 4 et 5 sont des coupes transversales respectivement selon III-III, IV-IV, V-V de la figure 1,
- la figure 6 est une vue en coupe axiale d'un tube d'air,
- la figure 7 est une vue en partie en coupe et en partie en élévation verticale de la paire des deux tubes regroupés représentés sur la figure 2, avant son montage dans la demi-coquille correspondante,
- la figure 8 est une vue schématique de face des entrées d'air des deux tubes de la figure 7, vues selon la flèche de la figure 6,
- les figures 9, 10 et 11 sont une vue et deux demi-vues schématiques représentant trois exemples de joints d'étanchéité souples comprimés radialement entre un tube et l'embout du collecteur correspondant,
- les figures 12 et 13 sont des vues correspondant respectivement aux figures 1 et 2 pour un second exemple de réalisation,
- les figures 14 et 15 sont des coupes transversales respectivement selon XIV-XIV et XV-XV de la figure 12, et
- la figure 16 est une demi-vue en coupe schématique d'un joint d'étanchéité cylindrique comprimé axialement et monté entre un tube et l'embout du collecteur correspondant.
Claims (12)
- Collecteur d'admission, pour moteur à combustion interne de préférence à injection, en particulier multipoint, le collecteur comprenant :une enveloppe (1,1'), délimitant un plenum (27, 27') destiné à être alimenté en air d'alimentation du moteur par une vanne à débit variable, telle qu'un corps de papillon, et munie d'au moins une bride (6, 6') de fixation à une culasse du moteur, la ou lesdites brides présentant au moins une ouverture (7, 7') d'alimentation de chaque cylindre du moteur,chaque ouverture (7, T) d'alimentation débouchant, d'une part, dans l'enveloppe (1, 1') et, d'autre part, dans une face (8, 8') de fixation de la bride (6, 6') sur ladite culasse, etdes tubes (12a, 12b, 12'a, 12'b) d'aspiration d'air recourbés, chacun d'une seule pièce à la forme voulue, en nombre au moins égal à celui des cylindres du moteur, et montés dans l'enveloppe (1, 1'), de sorte que chaque tube alimente un cylindre correspondant en air que le tube reçoit par son entrée (13a, 13b, 13'a, 13'b) dans le plenum (27, 27') et que le tube transmet à une ouverture (7, 7') correspondante d'une bride (6, 6') par sa sortie (14a, 14b, 14'a, 14'b) reliée à ladite ouverture d'alimentation (7, 7') par des moyens de raccordement étanches, comprenant un embout (20a-22a, 20b-22b, 20'a-22'a, 20'b-22'b) tubulaire dans lequel la partie d'extrémité de sortie dudit tube est retenue dans ladite enveloppe (1, 1'), avec interposition d'au moins un joint d'étanchéité souple (18a, 18b, 18c, 18') entre le tube et l'embout, caractérisé en ce que la surface interne de chaque tube (12a, 12b, 12'a, 12'b) est lisse, et continue de son entrée (13a, 13b, 134a, 13'b) à sa sortie (14a, 14b, 14'a, 14'b), et en ce que chaque embout est réalisé avec, d'une part, un berceau (20a, 20'a) d'une seule pièce avec ladite bride (6, 6') de fixation et en saillie du côté opposé à la culasse, dans le prolongement de ladite ouverture (7, 7') d'alimentation correspondante, le berceau étant de forme sensiblement hémi-cylindrique, dont l'extrémité interne à ladite enveloppe (1, 1') présente un fond annulaire (21a, 21'a) formant butée en saillie vers l'intérieur du berceau (20a, 20'a), et, d'autre part, un cavalier (22a, 22'a) de maintien dudit tube (12a, 12'a) dans ledit berceau (20a, 20'a), ledit cavalier (22a, 22'a) présentant une butée (23a, 23'a) en saillie vers l'intérieur du berceau (20a, 20'a) et en regard du fond annulaire (21 a, 21'a) du berceau, un anneau (17, 17') étant rapporté et fixé autour dudit tube (12a, 12'a), à proximité de sa sortie d'air (14a, 14'a), ledit joint d'étanchéité souple (18a, 18b, 18c, 18') étant rapporté autour dudit tube (12a, 12'a), entre ledit anneau (17, 17') et ladite sortie d'air (14a, 14'a) du tube (12a, 12'a), la partie d'extrémité de sortie dudit tube (12a, 12'a) avec ledit anneau (17, 17') et ledit joint d'étanchéité étant en place dans ledit berceau (20a, 20'a) correspondant, de sorte que l'anneau (17, 17') ou le joint (18, 18') est retenu par butée contre ledit fond annulaire (21a, 21'a) du berceau (20a, 20'a), ledit cavalier (22a, 22'a) étant rapporté sur ledit berceau (20a, 20'a) et la partie du tube (12a, 12'a) logée dans ce dernier, et étant fixé sur les bords du berceau (20a, 20'a).
- Collecteur d'admission selon la revendication 1, caractérisé en ce que l'enveloppe (1, 1') comprend deux demi-coquilles (2, 3 ; 2', 3') moulées, de formes complémentaires correspondant à la forme de l'enveloppe (1, 1'), et disposées l'une contre l'autre et solidarisées l'une à l'autre par leur rebord périphérique (4, 5 ; 4', 5') dans un plan de joint (P), pour former l'enveloppe avec les tubes (12a, 12b, 12'a, 12'b) entre elles, chaque tube étant moulé par soufflage, et de préférence par aspiration-soufflage, dans une matière plastique thermomoulable, et ladite bride (6, 6') de fixation étant d'une seule pièce avec l'une desdites demi-coquilles (3, 3').
- Collecteur d'admission selon l'une des revendications 1 et 2, caractérisé en ce que chaque tube (12) est réalisé avec une section progressivement décroissante vers l'aval sur au moins une partie de sa longueur et/ou avec une entrée d'air (13) convergente en forme de tulipe.
- Collecteur d'admission selon l'une des revendications 1 à 3, caractérisé en ce que chaque tube (12) est réalisé avec une section ayant sensiblement la même forme de son entrée (13) à sa sortie d'air (14).
- Collecteur d'admission selon l'une des revendications 2 à 4, caractérisé en ce que les tubes sont groupés au moins par paires de tubes (12a-12b ; 12'a-12'b) accolés sur au moins une partie de leur longueur, et les tubes de chaque groupe de tubes (12a-12b ; 12'a-12'b) sont fixés dans une même demi-coquille (3, 3') munie d'une bride de fixation (6, 6') avec des ouvertures (7, 7') d'alimentation auxquelles les tubes dudit groupe sont raccordés avec étanchéité, à l'aide d'au moins un second cavalier (24, 24') qui chevauche transversalement les tubes accolés (12a, 12b ; 12'a, 12'b) dudit groupe, dans leur partie accolée, et qui est fixé par ses extrémités sur ladite demi-coquille (3, 3').
- Collecteur d'admission selon la revendication 5, caractérisé en ce que chaque tube (12) est réalisé avec une section oblongue et des méplats (15), parallèles au grand axe (16) de sa section, sur ses faces en regard opposées, et les tubes (12a-12b) sont groupés en étant accolés par leurs méplats (15).
- Collecteur d'admission selon l'une des revendications 5 et 6, caractérisé en ce que les demi-coquilles (2, 3 ; 2', 3') avec leurs embases (26, 26'), d'une part, et les cavaliers (24, 24'), d'autre part, sont des pièces moulées en matière plastique, et les seconds cavaliers (24, 24') sont fixés sur les demi-coquilles (2, 3 ; 2', 3') correspondantes par soudage ou bouterollage.
- Collecteur d'admission selon l'une des revendications 2 à 7, caractérisé en ce que les tubes (12) sont réalisés recourbés avec un rayon de courbure, dans le plan contenant leur axe, inférieur à celui de l'enveloppe (1), les demi-coquilles (2, 3) de l'enveloppe (1) sont moulées en matière plastique avec des brides (4, 5) de solidarisation sur leurs bords dans le plan de joint (P), et les demi-coquilles (2, 3) sont solidarisées l'une à l'autre pour former l'enveloppe (1) par soudage, de préférence par vibrations, au niveau des brides de solidarisation (4, 5).
- Collecteur d'admission selon l'une quelconque des revendications 2 à 8, caractérisé en ce que chaque embout (20a-22a) assure la retenue d'un tube (12a) correspondant sur l'une des demi-coquilles (3) dont chaque berceau (20a, 20'a) est solidaire.
- Collecteur d'admission selon l'une des revendications 1 à 9,
caractérisé en ce que l'étanchéité entre la partie d'extrémité de sortie (14a) de chaque tube (12a) et l'embout correspondant (20'a-22'a) est assurée par compression axiale dudit joint d'étanchéité (18), qui est cylindrique, par ses faces planes d'extrémité entre une face radiale plane, tournée vers la sortie (14'a) du tube (12'a), de l'anneau (17') du tube (12'a) et une face radiale plane, tournée vers l'intérieur de ladite enveloppe (1'), du berceau (20'a) et de ladite bride (6'), lesdites faces radiales étant sensiblement perpendiculaires à l'axe du tube (12'a) à sa sortie (14'a). - Collecteur d'admission selon l'une des revendications 1 à 9, caractérisé en ce que chaque berceau (20a) et le cavalier (22a) correspondant sont moulés de sorte que l'embout formé par le berceau et le cavalier présente une section transversale évoluant progressivement d'une forme circulaire, du côté de la bride (6) de fixation et de son ouverture (7) d'alimentation circulaire, à une forme oblongue, complémentaire de celle des tubes (12a).
- Collecteur d'admission selon la revendication 11, caractérisé en ce que l'étanchéité entre la partie d'extrémité de sortie (14a) de chaque tube (12a) et l'embout (20a-22a) correspondant est assurée par compression radiale dudit joint (18a, 18b, 18c) d'étanchéité entre, d'une part, le tube (12a) et, d'autre part, le berceau (20a) et le cavalier (22a) correspondant.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9505534A FR2734026B1 (fr) | 1995-05-10 | 1995-05-10 | Collecteur d'admission pour moteur a combustion interne et son procede de fabrication |
FR9505534 | 1995-05-10 | ||
PCT/FR1996/000689 WO1996035869A1 (fr) | 1995-05-10 | 1996-05-07 | Collecteur d'admission pour moteur a combustion interne |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0839273A1 EP0839273A1 (fr) | 1998-05-06 |
EP0839273B1 true EP0839273B1 (fr) | 2001-11-21 |
Family
ID=9478837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96919876A Expired - Lifetime EP0839273B1 (fr) | 1995-05-10 | 1996-05-07 | Collecteur d'admission pour moteur a combustion interne |
Country Status (6)
Country | Link |
---|---|
US (1) | US5896838A (fr) |
EP (1) | EP0839273B1 (fr) |
DE (1) | DE69617244T2 (fr) |
ES (1) | ES2168486T3 (fr) |
FR (1) | FR2734026B1 (fr) |
WO (1) | WO1996035869A1 (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19647184A1 (de) * | 1996-11-14 | 1998-05-20 | Mann & Hummel Filter | Ansaugmodul für einen Verbrennungsmotor |
HUP0202827A2 (en) * | 1999-08-24 | 2002-12-28 | Siemens Ag | Suction intake device for an internal combustion machine |
EP1220981B1 (fr) * | 1999-10-14 | 2006-08-02 | Siemens Canada limited | Collecteur d'admission moule avec pipes d'entree d'admission distinctes |
US6234131B1 (en) | 1999-12-30 | 2001-05-22 | Hayes Lemmerz International, Inc. | Composite intake manifold assembly for an internal combustion engine and method for producing same |
US6234130B1 (en) | 1999-12-30 | 2001-05-22 | Hayes Lemmerz International, Inc. | Composite intake manifold assembly for an internal combustion engine and method for producing same |
US6234129B1 (en) | 1999-12-30 | 2001-05-22 | Hayes Lemmerz International, Inc. | Composite intake manifold assembly for an internal combustion engine and method for producing same |
US6199530B1 (en) | 1999-12-30 | 2001-03-13 | Hayes Lemmerz International, Inc. | Composite intake manifold assembly for an internal combustion engine and method for producing same |
EP1277947B1 (fr) * | 2001-07-20 | 2007-02-28 | Mann + Hummel GmbH | Dispositif de fixation pour un collecteur d'admission |
US6598581B2 (en) * | 2001-12-13 | 2003-07-29 | Visteon Global Technologies, Inc. | Metallic coating on a component of an internal combustion engine |
US7246593B2 (en) * | 2002-08-29 | 2007-07-24 | Siemens Canada Limited | Intake module assembly |
US6755897B2 (en) * | 2002-10-23 | 2004-06-29 | Siemens Vdo Automotive Inc. | Constant velocity radial inflow particle separator |
JP2008184939A (ja) * | 2007-01-29 | 2008-08-14 | Daikyo Nishikawa Kk | 樹脂製インテークマニホールド |
US8181620B2 (en) * | 2008-08-11 | 2012-05-22 | Mark IV Systems Moteurs USA, Inc. | Modular intake manifold |
JP5064537B2 (ja) * | 2010-07-27 | 2012-10-31 | 株式会社サンダンスエンタープライズ | インテークマニホールド用フランジ |
FR2967215B1 (fr) * | 2010-11-08 | 2016-01-01 | Valeo Systemes Thermiques | Collecteur de repartition de gaz et module d'admission de gaz correspondant |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2457155A1 (de) * | 1974-01-23 | 1975-07-24 | Bayerische Motoren Werke Ag | Luftansauganlage fuer brennkraftmaschinen |
US4175504A (en) * | 1975-01-15 | 1979-11-27 | Bayerische Motoren Werke Ag | Air induction system for an internal combustion engine |
DE2501305A1 (de) * | 1975-01-15 | 1976-07-22 | Bayerische Motoren Werke Ag | Luftansauganlage fuer brennkraftmaschinen |
JP2892700B2 (ja) * | 1989-08-18 | 1999-05-17 | ヤマハ発動機株式会社 | V形エンジンの吸気装置 |
US5150669A (en) * | 1989-11-06 | 1992-09-29 | General Motors Corporation | Pressure relief means for integrated induction system |
US5003933A (en) * | 1989-11-06 | 1991-04-02 | General Motors Corporation | Integrated induction system |
-
1995
- 1995-05-10 FR FR9505534A patent/FR2734026B1/fr not_active Expired - Fee Related
-
1996
- 1996-05-07 US US08/945,755 patent/US5896838A/en not_active Expired - Fee Related
- 1996-05-07 WO PCT/FR1996/000689 patent/WO1996035869A1/fr active IP Right Grant
- 1996-05-07 ES ES96919876T patent/ES2168486T3/es not_active Expired - Lifetime
- 1996-05-07 EP EP96919876A patent/EP0839273B1/fr not_active Expired - Lifetime
- 1996-05-07 DE DE69617244T patent/DE69617244T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5896838A (en) | 1999-04-27 |
FR2734026A1 (fr) | 1996-11-15 |
FR2734026B1 (fr) | 1997-07-18 |
EP0839273A1 (fr) | 1998-05-06 |
DE69617244T2 (de) | 2002-08-22 |
ES2168486T3 (es) | 2002-06-16 |
DE69617244D1 (de) | 2002-01-03 |
WO1996035869A1 (fr) | 1996-11-14 |
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