WO2019214937A1 - Conduite d'air pour véhicules à moteur - Google Patents

Conduite d'air pour véhicules à moteur Download PDF

Info

Publication number
WO2019214937A1
WO2019214937A1 PCT/EP2019/060362 EP2019060362W WO2019214937A1 WO 2019214937 A1 WO2019214937 A1 WO 2019214937A1 EP 2019060362 W EP2019060362 W EP 2019060362W WO 2019214937 A1 WO2019214937 A1 WO 2019214937A1
Authority
WO
WIPO (PCT)
Prior art keywords
line
ribs
wall thickness
areas
increased
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.)
Ceased
Application number
PCT/EP2019/060362
Other languages
German (de)
English (en)
Inventor
Ralf Timme
Muralikrishna Sarangla
Alexander Benz
Viktor Benz
Holger Stoppert
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.)
Montaplast GmbH
Original Assignee
Montaplast GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Montaplast GmbH filed Critical Montaplast GmbH
Publication of WO2019214937A1 publication Critical patent/WO2019214937A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/11—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall
    • F16L11/111—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall with homogeneous wall
    • 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
    • F02M35/10091—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
    • F02M35/10314—Materials for intake systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints; Joints allowing movement
    • F16L27/10—Adjustable joints; Joints allowing movement comprising a flexible connection only
    • F16L27/107—Adjustable joints; Joints allowing movement comprising a flexible connection only the ends of the pipe being interconnected by a flexible sleeve
    • F16L27/11—Adjustable joints; Joints allowing movement comprising a flexible connection only the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations
    • 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
    • F02M35/1015—Air intakes; Induction systems characterised by the engine type
    • F02M35/10157—Supercharged engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L51/00—Expansion-compensation arrangements for pipe-lines
    • F16L51/02—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
    • F16L51/022—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube with a single corrugation
    • F16L51/024—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube with a single corrugation non-metallic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L51/00—Expansion-compensation arrangements for pipe-lines
    • F16L51/02—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
    • F16L51/025—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube with several corrugations

Definitions

  • the invention relates to an air line for motor vehicles, in particular for connecting a hot component with a cold component, wherein at a first end of the line first connec tion medium for airtight fixing the line to a first component and at the second end of the line second Ver connecting means for airtight attachment the line are provided on a second component, wherein at least one flexible line section between the first and the second connec tion means of the line is provided, wherein the flexible line section comprises a succession of successively arranged areas of increased flexibility and increased bending stiffness, which preferably consist of the same material and integrally formed on each other.
  • Generic air ducts for motor vehicles are used in example to connect a turbocharger, a part of egg ner internal combustion engine or other Kraftzeuzeu g founded with increased operating temperature with a cold component such as an air filter or a sons term air intake. Between the hot component and the cold component can thus be present at operating tempera ture of the motor vehicle readily a temperature difference of> 100 ° C. At the same time, the air line must provide tolerance and / or vibration compensation between the connection components. On the one hand, this relates to tolerances due to changing operating temperatures of the hot component, which also affects the connection region of the hot component to the air line.
  • an air line is exposed to mechanical alternating stresses such as vibrations, vibrations, tensile and / or shear forces, which may also occur due to the operation of the vehicle.
  • An air line must therefore withstand high thermal and / or mechanical loads over long periods of time.
  • an air line must be inexpensive to produce, especially in the production of motor vehicles in mass production, and easy to assemble and disassemble.
  • the invention is based on the object to provide an air line for motor vehicles, which is inexpensive to produce, has a high operating reliability and Le bensdauer, is easy to handle and is dimensionally stable even with ho hem line vacuum.
  • the flexible conduit section consists at least partially or preferably completely of an elastic plastic material, particularly preferably a thermoplastic elastomer, wherein the areas of increased bending stiffness have at least two ribs running around the circumference of the conduit, an area being provided between the ribs with respect to this lesser wall thickness ,
  • the ribs at least one or preferably both, are preferably circumferentially circumferentially circumferentially around the circumference of the pipe, if necessary, the ribs may consist of several circumferential segments.
  • the line has a flexibility due to the elastomeric properties of the material, which is particularly adapted to the requirements of an air line for motor vehicles.
  • the flexural rigidity of the line can be adapted to the requirements, in particular by dimensioning the height and / or width of the ribs.
  • the circumferential ribs of the elastomeric plastic material, in particular thermoplastic elastomer so that they indeed cause stiffening of the respective Kausab section, but still under the mechanical stress of the line management of an elastically deformable Lei tion result section.
  • the line as a whole therefore has on the one hand a comparatively high degree of flexibility in order to withstand the alternating stresses in appli cation in a motor vehicle, on the other hand is ensured by the ribs a comparatively high rigidity of the line against a prevailing in the line underpressure and / or overpressure ,
  • the ribs are made of an elastomeric material, the line cross section is still elastically deformable, so that the line has a total of a long life.
  • the ribs of the line sections with increased bending stiffness can in this case consist of the same material from which the Line sections with increased flexibility, which are arranged between the ribs exist.
  • the line sections increased flexibility may also consist of a different material than the ribs, casting process, for example, by making the line in two- or multi-component injection.
  • the flexible conduit section with the ribs can thus consist of a uniform material. As a result, be particularly favorable mechanical properties of the line are given as transitions from different materials or connec tion or joining areas of different materials are avoided, which are often a weak point in terms of material fatigue.
  • areas of lesser wall thickness are generally to be understood in the context of the invention as areas of the line sections with increased bending stiffness.
  • the "areas of increased bending stiffness" generally experience in the context of the invention at a bending stress of the line transverse to its longitudinal direction or longitudinal extent a small re angle change with respect to the bending radius than the areas of increased flexibility.
  • a greater elongation than the areas of increased bending stiffness occurs in the flexible line sections to compensate for the elongation of the line due to the bending stress.
  • This refers to the outer radius of the conduit relative to the center of curvature of the bend. It is understood that with respect to the inner radius of the conduit, which faces the center of the radius of curvature, the areas of increased flexibility experience greater compression than the areas of increased flexural rigidity. The same applies in each case to acting lateral forces, which cause a lateral offset of line sections relative to the not claimed by äuße re forces state of the line.
  • the ribs are preferably solid and placed on the continuous conduit wall.
  • the ribs are preferably arranged on the outside of the conduit wall.
  • the line described according to the invention relates in each case in particular to the line without acting on these external forces, including a line vacuum.
  • the distance between adjacent ribs within a jesab section with increased bending stiffness is preferably clotting ger than the rib spacing between different areas of increased bending stiffness, between which a Bensab section increased flexibility is provided, even if this is not mandatory.
  • a line section of increased flexibility can also be formed by the shape of the pipe wall longitudinal section in the longitudinal direction of the pipe.
  • the longitudinal section profile of the line wall in the region of the flexible line section has a greater curvature than in the region of increased bending stiffness.
  • the conduit wall can thus, for example in line longitudinal direction in the region of the flexible line sections have a V-shaped course and in the areas of increased bending stiffness a more elongated course, possibly also a course substantially parallel to the line longitudinal direction.
  • the smaller radius of curvature or smaller angles in the line section areas increased flexibility thus acts in the manner of a hinge, compared to the areas of increased bending stiffness.
  • the ribs in the longitudinal direction obliquely rising flanks, so that at transition areas of Line sections of different bending stiffness change the mechanical properties of the line wall at least rather continuously and more or less drastic jumps of mechanical properties with respect to the longitudinal direction extending in Lei line wall profiles are avoided.
  • the line has an increased service life with mechanical alternating stresses.
  • the ribs can have an at least essentially triangular, trapezoidal or wave-shaped cross-section.
  • the wall thickness of the ribs is greater than the areas of lesser wall thickness lying between them by a factor of> 1.25, whereby the areas of "lesser wall thickness" as generally within the scope of the invention are in the region of increased bending rigidity of the line section Ribs by a factor of> 1.5 or> 2, more preferably> 3, greater than the intervening areas of lesser wall thickness
  • the rib wall thickness may be less than a factor of 5 or less than a factor of 3 of the wall thickness of the areas of lesser wall thickness therebetween
  • the area of increased bending stiffness of the Lei processing section by the ribs particularly stabilized, on the other hand, this has a relatively high flexibility due to the intermediate preparation Ches lesser wall thickness, so that mechanical cycling, in particular bending stresses and / or shear forces on the Leit In some cases, it must also be absorbed by the region of increased flexural rigidity and not only by the region of increased flexibility between the ribs.
  • güns term mechanical properties of the air line are given, which stabilize the line sufficiently by the ribs, in particular special in relation to a collapse of the line due to a negative line pressure, which would affect the function of the Heillei tion beyond the intended tolerances addition.
  • the arranged between the ribs area of lesser wall thickness may have a wall thickness which is greater than the wall thickness in the wall region he increased flexibility, but possibly also not by the factor> 1.25 or> 1.5, optionally also> 2 or> 3 greater than the factor 5 or the factor 3.
  • the region of increased bending stiffness has a certain flexibility, but the region of increased flexibility of the line section absorbs the deformation forces on the line to a greater extent or as far as possible.
  • the region of increased flexibility can also have at least approximately the same wall thickness as the region of lesser wall thickness arranged between the ribs, wherein the increased bending stiffness is brought about by the ribs or the shape of the conduit wall.
  • the flexible line section has a sequence of wave crests and wave troughs with respect to the longitudinal direction of the line, wherein the ribs are arranged with between them angeord Neten areas of lesser wall thickness in the region or at the wave crests.
  • This preferably applies to the shaping of the conduit wall, so that the wave crests and troughs are arranged on the inside and outside of the conduit wall.
  • the areas of increased flexibility are preferably arranged in the wave valleys. The areas of the troughs with increased flexibility thus contribute significantly to the flexibility of the Lei device, with their stability in particular against a suppression in the line is thus essentially justified by the wave crests.
  • the arrangement of the ribs on the wave crests additionally stabilizes them, whereby the ribs are made of the same material as the one between them.
  • arranged regions of lesser wall thickness and the areas he increased flexibility or the areas of wave troughs may exist, so that the flexible line section can be made entirely of a thermoplastic elastomer material, preferably preferably from a single material.
  • the materials of the line in the troughs and the wave crests and / or the regions of the ribs and the intermediate regions of lesser wall thickness may also consist of different materials, preferably each of thermoplastic elastomers, such a line in the multi-component injection molding process particularly accurate and reproducible can be produced.
  • Such a line thus has a total of particularly advantageous mechanical properties th, especially at high mechanical Knibeanspru calculations, as they exist in an air line as the air intake of a turbocharger of a motor vehicle.
  • the area of increased flexibility between the ribs has a smaller inner diameter than the area of lesser wall thickness between the ribs.
  • the region of increased flexibility may be associated with a trough, the region of lesser wall thickness between the ribs a waves mountain.
  • the area of lesser wall thickness between the fins which is a part of a line section with increased flexural rigidity, has at least approximately the same or a larger inner diameter as the inner diameter of the fins.
  • About the same inner diameter is when the inner diameter of the smaller wall thickness region differs from the inner diameter of the ribs by less than 1 times the rib height or less than or equal to 0.5 times or less than 0.25 times the rib height .
  • the rib height results here from the extension of the rib of the inner line wall to the ridge or outer diameter of the rib relative to a line cross section perpen- dicular to the direction of conduction, wherein the cross section extends through the ridge of the rib.
  • the inner diameter of the region of lesser wall thickness is not more than 2 times or more than 1 times the rib height greater than the Rip penau builtmesser, preferably the region of reduced wall thickness between the ribs is arranged at the level thereof.
  • the region of lesser wall thickness between the ribs is radially spaced from the region of increased flexibility between the ribs and arranged at least approximately between the Rip pen, so that in tensile and shear forces on the Lei direction in the longitudinal direction of the region of lesser wall thickness only a comparatively small Angular deformation undergoes, in contrast to the area of increased flexibility between the ribs, which absorbs increased increases in tensile and / or shear forces on the line changes in length of the line and acts in the manner of joint areas.
  • the line has advantageous mechanical properties.
  • the area of lesser wall thickness may be formed from the lower region of the ridge pen height, for example the lower third of the rib height or, in particular, at the base of the ribs.
  • the contour of the inner line wall in the region of two adjacent ribs and lying between these area lesser wall thickness or in the region of a wave crest can be formed at least substantially zy-cylindrical, whereby this area in particular with respect to tensile and / or shear forces in the longitudinal direction of a high stability having no elongation of the line.
  • the area of lesser wall thickness between the ribs may have a wall thickness of greater than or equal to 0.5 mm equal to 1 mm, preferably less than or equal to 2 mm equal to 1.5 mm, so that this has a significant flexibility but the line through the ribs has sufficient under or over pressure resistance.
  • the wall thickness or height of the ribs may be greater by a factor equal to 1.25 or greater than or equal to 1.5, preferably greater than or equal to 2 equal to 3 than the wall thickness in the range clotting gerer wall thickness between the ribs.
  • the wall thickness of the ribs by a factor of ⁇ 10 or ⁇ 5 is greater than the wall thickness in the region lying between the ribs of lesser wall thickness. The ribs can thereby cause a suffi cient underpressure or overpressure stiffness of the line.
  • the areas of increased bending stiffness of the line section may each have 2, 3 or more in the line longitudinal direction Jerusalemei nandsammlungende ribs, more preferably not more than three, so that a close sequence of areas of increased and flexural rigidity and increased flexibility may be given in the longitudinal direction of the line.
  • the line is produced by injection molding.
  • the line with the under defenceli chen wall thickness ranges such as ribs, areas increased flexibility Flexi etc. particularly accurate to produce exactly what conditions are particularly well-defined mechanical properties of the conditions and a long service life of the same result.
  • the conduit consists at least partially or completely of a thermoplastic copolymer (TPC), particularly preferably in a proportion of> 50% by weight,> 75% by weight,> 85% by weight or at least virtually completely.
  • TPC thermoplastic copolymer
  • the TPC polymer may in particular be a thermoplastic polyester elastomer which has very good mechanical and thermal properties for the application. united.
  • the elastomer may also be, for example, a styrene block copolymer (TPS) a thermoplastic polyurethane or thermoplastic polyether-polyamide.
  • TPS styrene block copolymer
  • a TPC material is therefore also particularly preferably used, since this compared with a vulcanized thermoplastic material has a higher strength and thus higher pressure and / or under compressive strength.
  • TPC styrene block copolymer
  • PAT polyalkylene terephthalate
  • PBT polybutylene terephthalate
  • thermoplastic elastomer In a thermoplastic elastomer is usually a multi-phase plastic with elastically deformable Mole kül Schlen ago, in which areas of fusible, especially amorphous thermoplastics are installed.
  • the thermoplastic elastomer thus usually consists of an elastic soft phase and a thermoplastic type hard phase.
  • the hard phase is usually a matrix, so that the polymer material is thus at least partially or completely meltable and processable by injection molding.
  • the hard segments may here be amorphous or partially crystalline, for example also by ion clusters thermally reversibly crosslinked macromolecules aufwei sen with low crosslinking density.
  • thermoplastics with certain or high proportions of crosslinked or uncrosslinked elastomer phase.
  • the elastomeric phase can be formed from crosslinked to form a vulcanized thermoplastic, particularly preferably not vulka nized thermoplastic elastomers are used due to the increased strength and / or bending stiffness of the material, so that the Line an increased negative or positive pressure without deformation or collapse can be formed.
  • the Shore hardness of the elastomeric conductor material is preferably in the range of 30 Shore A to 80 Shore A, where appropriate, also higher, more preferably in the range of 35 to 50 Shore A.
  • Shore A For certain applications as in Reinluftleitun gene is a hardness of 30- 50 Shore A particularly preferred, for other applications, especially at higher internal pressure as in charge air ducts, a hardness of 40-80 Shore A.
  • the E-tensile modulus of the elastomeric ⁇ ö niechansmaterials is preferably in the range of 20 to 100 MPa.
  • the data relate to the relevant DIN standards with effect from 1 January 2018.
  • the line material can in this case have a permanent temperature resistance of greater than or equal to 100 ° C., preferably> 120 ° C., preferably> 130 ° C.
  • the air line according to the invention is particularly preferably designed as an air line for use in the engine area, which supplies a device of the engine or drive device such as in particular a turbocharger with air or discharges it from the device.
  • the line can in particular be designed as a clean air line for supplying clean air to the device, as a charge air line, in particular even at high loading pressures, or blank air line, in particular for the air management of a turbocharger.
  • the line according to the invention can also be used for air supply or air removal of another device of a motor vehicle such as intercooler, heat exchanger or the like.
  • the line is at one end of a line with a hot component such as a turbocharger, blower or other force vehicle component and connected to the other end of the line with a cold component such as an air intake, filter housing or the like.
  • a hot component such as a turbocharger, blower or other force vehicle component
  • a cold component such as an air intake, filter housing or the like. Due to the different operating temperatures of the genann th components and thus high thermal loads of Lei tion, the line according to the invention has proven to be particularly advantageous before.
  • At least one end of the line is connected to an on closing part connected to a device or connectable device such as turbocharger, filter housing, etc., wherein the connecting part is preferably by injection molding Herge is.
  • the line and the connector can be in a two- or multi-component injection molding Herge provides, preferably in the same injection molding tool in a production cycle.
  • connection part has at least one undercut with respect to the longitudinal extent of the line, which is engaged behind by the material of the line, preferably by injection molding by means of injection.
  • the connection part has at least one undercut with respect to the longitudinal extent of the line, which is engaged behind by the material of the line, preferably by injection molding by means of injection.
  • the connecting part has at least one area or more distributed around the circumference of the cable arranged che surface, which are completely surrounded by the line material based on a longitudinal section of the line, example, are overmolded.
  • the connection between the line and the connection part has a high mechanical strength, in particular also with respect to forces across the line, such as, for example, vibrations or vibrations.
  • such a configuration is particularly simple and advantageous to produce by injection molding.
  • connection part can in this case represent, for example, a sleeve, flange, housing area or the like of the respective device.
  • the connection part consists at least partially or completely of a polyalkylene terephthalate (PAT), in particular polybutyl terephthalate (PBT).
  • PAT polyalkylene terephthalate
  • PBT polybutyl terephthalate
  • the con nection to this part to> 50 wt.% Or> 75 wt. %, be particularly preferably> 85 wt.% Or at least practically fully constantly consist of PAT or PBT.
  • one of the like material has advantageous mechanical properties and can be processed by injection molding.
  • connection part can also consist of polycarbonate or polycarbonate / ABS or contain these components to a certain extent, for example> 5% by weight or> 10% by weight, if appropriate also> 25% by weight, preferably not> 25% by weight or not> 10% by weight.
  • the line Due to the one-piece connection of the line with the connection part, in particular by injection molding, thereby wei tere fastening means for fixing the line to the walls Ren device such as a filter housing is not required, as otherwise in conventional applications in the form of separate nips, clips or the like must be provided.
  • the production and in particular also assembly of the line is thereby considerably simplified.
  • the line consists of TPC, wherein the line with a connection part of a motor vehicle device, which consists at least partially or completely of PAT or in particular PBT, welded.
  • the device may be a motor vehicle device which is disclosed in the context of the invention.
  • the welding process is particularly preferably carried out as hot gas welding.
  • Such a compound of line and connector part in particular at high mechanical and thermal stress on the line, also alternating stresses, particularly proven, which is also exposed to the connection region of the line and connector.
  • the application of the hot-gas welding method is particularly preferred, since here is an United bond high resilience and high dimensional accuracy achieved bar, especially in relation to the scope of the present invention, wherein the heat input to the United binding area is exactly limited.
  • the welding process can be carried out directly in the injection molding tool, whereby the Lei line connection is procedurally simple but at the same time with high accuracy feasible and the connection area has a long service life.
  • FIG. 1 shows a cross section of a section of the invention
  • FIG. 2 shows an alternative embodiment of the line section according to the invention
  • FIG. 3 A line according to FIG. 2 with connecting parts.
  • 1 shows a cross-sectional drawing of a flexible line section according to the invention with an axis A.
  • the regions 12 of increased flexural rigidity of the line 1 have at least two circumferentially circumferential ribs 14 and in each case one region 15 arranged between two adjacent ribs with a small wall thickness relative to the ribs 14.
  • the ribs 14 are circumferentially formed circumferentially around the circumference.
  • the Wan extension 13 of the flexible conduit section including the ribs consists of a resilient plastic material, in particular a thermoplastic elastomer.
  • the ribs 14 are solid and - seen geometrically - placed on the pipe wall and net angeord on the outside of the pipe wall.
  • the wall thickness of the ribs 14 is greater by a factor> 1.25 than the wall thickness of each arranged between adjacent ribs 14 areas of smaller wall thickness 15.
  • the arranged between the ribs 14 areas of lesser wall thickness 15 have a higher wall thickness than that between the Berei chen 12 increased bending stiffness arranged peripheral portions 11 of the line with increased flexibility.
  • the respective rib 14 may extend in width over 5% -45% of the extent of the region of increased flexural rigidity in the longitudinal direction of the conduit, more preferably above 10% -40% or 15% -35% of the same.
  • the area of lesser wall thickness 15 between the ribs 14 has at least approximately the same or a larger inner diameter than the inner diameter of the ribs 14.
  • the wall thickness of the ribs is larger by approximately a factor of 3 than the area of lesser wall thickness between the ribs 14.
  • the regions 11 of increased flexibility between the ribs 14 have a smaller inner radius IF than the radius of the arranged between the ribs 14 region of increased bending stiffness 15th
  • the wall of the flexible conduit section 10, comprising the areas of increased flexibility 11 and increased flexural rigidity 12, including the ribs 14, consists of a thermoplastic elastomer.
  • the wall of the flexible Kausabschnit TES 11 consists at least partially, preferably completely, of a thermoplastic copolymer (TPC), in particular of a thermoplastic polyester elastomer. This refers to each of the plastic component of the line section, the material may be fiber reinforced and contain fillers.
  • TPC thermoplastic copolymer
  • the pipe is manufactured by injection molding.
  • the ribs 14 have a substantially triangular cross-sectional shape.
  • the flexible line section 10 is based on the longitudinal direction of the line from a sequence of wave crests 16 and troughs 17, so with bellows training of Kausabschnit tes 10.
  • the ribs 14 with the arranged between these areas lesser wall thickness 15 are in the area or on the Wave crests 16 arranged.
  • Fig. 3 shows an example of an air line 1 for motor vehicles GE, in particular for connecting a hot member 20 with a cold member 25.
  • first connecting means 3 for airtight fixing of the line 1 to a first component 20
  • second end 4 of the Lei direction second connecting means 5 for airtight fixing of the line to a second component 25 is provided.
  • the connecting elements are an integral part of the line.
  • At least one flexible line section 10 is provided between the first and the second connection means 3, 5 of the line 1.
  • the flexible conduit section 10 has a sequence of successively arranged regions 11 of increased flexibility and regions 12 of increased flexural rigidity, which here consist of the same material and are integrally formed on one another.
  • the connecting means 3 or 5 of the line and / or the connecting part of the further, preferably rigid component are PBT (polybutylene terephthalate).
  • PBT polybutylene terephthalate
  • the line is not limited to this field of application and, for example. Can be used as a charge air line or pipe, in particular in each case for the supply of a turbocharger.
  • connection of the line with the connection part of the turbo charger or other motor vehicle device is effected in particular by welding, in particular by hot gas welding. This is especially true when the line of a TPC material and the connector at least partially or completely made of PBT (polybutylene terephthalate).
  • PBT polybutylene terephthalate
  • the line is connected to a hot component 20, in this case a connection 21 of a turbocharger, and a cold component 25, in this case the connection 26 of a filter housing.
  • the croqusmit tel 3, 5 on at least one or both ends 2, 4 of the line 1 are integrally connected to at least one or both connecting parts or terminal portions 21, 26, preferably with the cold component.
  • the connection is made by injection molding.
  • connection part 26 of at least one of the devices has, with respect to the longitudinal extent of the line 1, a first undercut 27, which is engaged behind by the connection means 5 of the line.
  • the connecting means 5 of the line is injection-molded around the undercut.
  • the undercut may extend around a partial circumference of the line, for example a plurality of undercuts spaced apart from one another in the circumferential direction of the line may be provided.
  • the connecting means 3, 5 of the line and / or the connection part 21, 26 of the device one or more second undercuts in the longitudinal direction of the line aufwei sen, which based on the line cross-section and / or the longitudinal section completely from the other part of line or connector are surrounded.
  • the undercut 28 of the connection part 26 of the cold component Even with these undercuts 28, several of them may be distributed around the circumference of the cable.
  • the undercuts 27 and 28 may be provided with the features described for these in combination at the connec tion area of line and connector, for example. Alternately arranged.
  • the undercuts 27 in this case need not be fully encapsulated in each case, but may represent simple undercuts.
  • connection means 3, 5 of the conduit may preferably consist of the same material as the flexible conduit section. This has proven particularly useful when said material is a thermoplastic elastomer, in particular TPC, which combines both strength properties and elastic properties in a particular degree for the application of the present invention.
  • connection part 26 consists at least partially, in this case completely constantly, of polyalkylene terephthalate, more precisely polybutylene terephthalate (PBT). Especially in combination with a PC line based on thermoplastic polyester elastomers, there are special advantages.
  • the flexible conduit material may have a hardness of about 40 Shore A and an E-tensile modulus of 50 MPa. bo / do / ib April 23, 2019

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne une conduite d'air pour des véhicules à moteur, de premiers éléments de liaison (3) situés à une première extrémité (2) de la conduite (1) sont destinés à fixer la conduite de manière étanche à l'air sur un premier élément structural (20), et de seconds éléments de liaison (5) situés à la seconde extrémité (4) de la conduite sont destinés à fixer la conduite de manière étanche à l'air sur un second élément structural (25), au moins une partie de conduite flexible (10) se situe entre le premier et le second moyen de liaison (3, 5) de la conduite (1), la partie de conduite flexible (10) présentant une succession de zones de plus grande flexibilité (11) et de plus grande résistance à la flexion (12) agencées à la suite les unes des autres, lesquelles se composent de préférence du même matériau et sont réalisées moulées d'un seul tenant les unes à côté des autres. Selon l'invention, lesdites zones à résistance à la flexion (12) renforcée de la conduite présentent au moins deux nervures (14) périphériques s'étendant sur le pourtour et au moins une zone agencée dans chaque cas entre deux nervures (14) adjacentes, ladite zone ayant une épaisseur de paroi moindre comparativement aux nervures (14), la paroi de la partie de conduite flexible (10) y compris les nervures (14) se composant d'une matière plastique élastique.
PCT/EP2019/060362 2018-05-09 2019-04-23 Conduite d'air pour véhicules à moteur Ceased WO2019214937A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018111192.4A DE102018111192A1 (de) 2018-05-09 2018-05-09 Luftleitung für Kraftfahrzeuge
DE102018111192.4 2018-05-09

Publications (1)

Publication Number Publication Date
WO2019214937A1 true WO2019214937A1 (fr) 2019-11-14

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DE (1) DE102018111192A1 (fr)
WO (1) WO2019214937A1 (fr)

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DE102020205558A1 (de) 2020-04-30 2021-11-04 Etm Engineering Technologie Marketing Gmbh Luftleitung für den Ansaugtrakt eines Verbrennungsmotors

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EP0813947A1 (fr) * 1996-06-19 1997-12-29 Steere Enterprises, Inc. Conduits d'air propre et procédés de fabrication
US20060279084A1 (en) * 2005-06-14 2006-12-14 Collins Daniel J Two-shot or insert molded cuffs for welding onto clean air ducts
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US4079757A (en) * 1975-02-10 1978-03-21 Continental Gummi-Werke Aktiengesellschaft Sleeve with folds therein
EP0813947A1 (fr) * 1996-06-19 1997-12-29 Steere Enterprises, Inc. Conduits d'air propre et procédés de fabrication
US20060279084A1 (en) * 2005-06-14 2006-12-14 Collins Daniel J Two-shot or insert molded cuffs for welding onto clean air ducts
DE102005051946A1 (de) * 2005-10-19 2007-04-26 Mündener Gummiwerk Gmbh Im Spritzgießverfahren hergestellter Schlauch für die Führung von Gasen, insbesondere ein Schlauch zwischen Luftfilter und Turbolader eines Fahrzeugs
DE112015006153T5 (de) * 2015-02-13 2017-10-19 Hyundai Motor Company Auto-Ladeluftschlauch mit geringen Vibrationseigenschaften

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020205558A1 (de) 2020-04-30 2021-11-04 Etm Engineering Technologie Marketing Gmbh Luftleitung für den Ansaugtrakt eines Verbrennungsmotors

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