EP3268598B1 - Aligning device for engine - Google Patents

Aligning device for engine Download PDF

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Publication number
EP3268598B1
EP3268598B1 EP16709325.1A EP16709325A EP3268598B1 EP 3268598 B1 EP3268598 B1 EP 3268598B1 EP 16709325 A EP16709325 A EP 16709325A EP 3268598 B1 EP3268598 B1 EP 3268598B1
Authority
EP
European Patent Office
Prior art keywords
alignment
aligning
cylinder head
suction module
internal combustion
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.)
Active
Application number
EP16709325.1A
Other languages
German (de)
French (fr)
Other versions
EP3268598A1 (en
Inventor
Marco Dettinger
Mathias Endress
Wolfgang GÜTH
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.)
Mahle International GmbH
Original Assignee
Mahle International 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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP3268598A1 publication Critical patent/EP3268598A1/en
Application granted granted Critical
Publication of EP3268598B1 publication Critical patent/EP3268598B1/en
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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
    • F02M35/10006—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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F02D9/106—Sealing of the valve shaft in the housing, e.g. details of the bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10078—Connections of intake systems to the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10354—Joining multiple sections together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
    • F02B31/06—Movable means, e.g. butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0279—Throttle valve control for intake system with two parallel air flow paths, each controlled by a throttle, e.g. a resilient flap disposed on a throttle
    • 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
    • F02M35/104—Intake manifolds
    • F02M35/112—Intake manifolds for engines with cylinders all in one line

Definitions

  • the present invention relates to an internal combustion engine with an attachment, in particular with a suction module, with the features of the preamble of claim 1.
  • the invention also relates to a suction module for such an internal combustion engine.
  • a generic internal combustion engine comprises at least one engine block, which contains several cylinders, and at least one cylinder head, which is attached to the engine block and contains fresh air channels leading to the cylinders. Furthermore, at least one suction module is provided, which is attached to the cylinder head and which has a fresh air inlet opening and a plurality of fresh air outlet openings fluidly connected to the fresh air channels.
  • Such a suction module can also be referred to as a fresh air distributor and can be used both in supercharged engines and in naturally aspirated engines.
  • the suction module is attached to the cylinder head and thus represents an attachment.
  • the cylinder head attached to the engine block represents a flange component that is provided on the engine block, as in the document DE 102010020875 shown.
  • the suction module usually has a flange in the area of the fresh air outlet openings, which enables screwing to the cylinder head.
  • a hole pattern of the cylinder head must be overlapped with a hole pattern of the flange in order to be able to screw fastening screws through the through holes of the flange into the screw holes of the cylinder head.
  • this requires a relatively high level of effort to properly align the suction module with respect to the cylinder head.
  • Such alignment is carried out manually, for example, by a fitter.
  • the present invention deals with the problem of specifying an improved embodiment for an internal combustion engine of the type described above or for an associated suction module, which is characterized in particular by a simplified assembly of the internal combustion engine.
  • the invention is based on the general idea of forming an alignment device on the attachment, in particular on the suction module, and on the flange component, in particular on the cylinder head, which, when attaching the attachment to the flange component, in particular the suction module on the cylinder head, aligns the attachment relative to the flange component, in particular of the suction module relative to the cylinder head.
  • the alignment device provided for this purpose is preferably arranged between the attachment part and the flange component, that is to say preferably between the suction module and the cylinder head, so that it is on the one hand on an attachment side of the attachment part facing the flange component, preferably the cylinder head, in particular the suction module, and on the other hand one of the attachment part, preferably the suction module, facing the connection side of the flange component, in particular the cylinder head.
  • the required alignment with the flange component, preferably the cylinder head is automatically and automatically carried out, so that, for example, the above mentioned hole pattern of the attachment, in particular the suction module, is aligned with the hole pattern of the flange component, in particular the cylinder head, with sufficient accuracy.
  • the assembly of the add-on part, preferably the suction module is thereby simplified and in particular can be automated better.
  • the alignment device provided between the attachment part and the flange component, in particular between the suction module and the cylinder head, is provided in addition to fastening means which serve to fasten the attachment part to the flange component, in particular the suction module, to the cylinder head.
  • fasteners are, for example, screws for screwing the attachment to the flange component, in particular the suction module on the cylinder head, which penetrate through openings provided on the attachment, preferably on the suction module, and penetrate into screw openings in the flange component, preferably the cylinder head.
  • the alignment between the attachment and the flange component, in particular between the suction module and the cylinder head, which is brought about with the aid of the alignment device, takes place before the attachment of the attachment to the flange component, in particular the suction module, to the cylinder head, in particular before the aforementioned screw connection. Furthermore, the alignment takes place in an alignment plane, which is oriented essentially perpendicular to the mounting direction and which runs essentially parallel to the aforementioned mounting side of the attachment, preferably the suction module, and parallel to the aforementioned connection side of the flange component, preferably the cylinder head, which abut one another in the mounted state.
  • Add-on parts in the sense of the present invention are, for example, suction modules, cylinder head covers, oil mist separators or coolers. Add-on parts of this type can have a greater extent in the longitudinal direction than in the transverse direction, as a result of which minor deviations in the positioning can have a considerable effect over the entire component extent.
  • the embodiments and exemplary embodiments described in more detail below using the example of the suction module and the cylinder head can be transferred analogously to the other attachments and flange components.
  • the aligning device can have at least three separate and spaced apart aligning units, at least one such aligning unit bringing about an alignment of the attachment to the flange component or the suction module to the cylinder head with respect to a first alignment direction, which is oriented perpendicular to an attachment direction in which the attachment to the flange component or in which the suction module is attached to the cylinder head. Furthermore, at least one other such alignment unit effects an alignment of the attachment to the flange component or the suction module to the cylinder head with respect to a second alignment direction, which is oriented perpendicular to the attachment direction and inclined to the first alignment direction.
  • the two alignment directions perpendicular to the alignment direction and inclined to one another define an alignment plane which extends perpendicular to the mounting direction.
  • the two alignment directions are expedient oriented essentially perpendicular to each other, so that the angle between the two alignment directions is 90 ° ⁇ 5 °.
  • all alignment units bring about an alignment of the attachment to the flange component or the suction module to the cylinder head exclusively either in the first alignment direction or in the second alignment direction, so that only these two alignment directions are defined by means of the alignment units. This results in a particularly simple and efficient positioning or alignment between the attachment part and the flange component or between the suction module and the cylinder head.
  • An embodiment is particularly advantageous in which exactly three alignment units are provided, wherein two of these alignment units, i.e. a first alignment unit and a second alignment unit, bring about alignment in one alignment direction, while one of these alignment units, i.e. the third alignment unit, aligns in the other alignment direction causes.
  • the first and second alignment units each effect an alignment in the first alignment direction
  • the third alignment unit effects an alignment in the second alignment direction, or vice versa.
  • the two alignment units assigned to one alignment direction are spaced apart from one another in the other alignment direction.
  • the alignment unit assigned to the other alignment direction that is to say the third alignment unit with respect to this alignment direction, is arranged between the two alignment units assigned to the one alignment direction, that is to say between the first and the second alignment unit.
  • the alignment unit assigned to the other alignment direction is offset in one alignment direction from the two alignment units assigned to the one alignment direction (first and second alignment unit).
  • the above-mentioned measures can be implemented individually or together or in any combination and each result in an improved alignment of the add-on part with respect to the flange component or the suction module with respect to the cylinder head.
  • the one alignment unit that is assigned to the other alignment direction that is to say the third alignment unit, is arranged essentially centrally between the first and the third alignment unit, that is to say between the two other alignment units that are assigned to the one alignment direction.
  • This central alignment relates to a longitudinal direction of the add-on part or the flange component or the suction module or the cylinder head and corresponds in particular to the direction in which the cylinders of the cylinder head are arranged next to one another.
  • the alignment direction assigned to the centrally arranged (third) alignment unit preferably extends parallel to the aforementioned longitudinal direction.
  • the alignment units can each have a first alignment element fixedly arranged on the attachment part or on the suction module and a second alignment element fixedly arranged on the flange component or on the cylinder head, which aligns the attachment part relative to the flange component or the suction module relative to the cylinder head in interact in the respective alignment direction.
  • first alignment elements are integrally formed on the attachment or on the suction module.
  • second alignment elements can be integrally formed on the flange component or on the cylinder head.
  • the first alignment element can be formed by an alignment pin protruding in the mounting direction from the attachment or from the suction module, while the associated second alignment element is formed by an alignment opening formed in the flange component or in the cylinder head, into which the alignment pin extends Alignment of the attachment to the flange component and the suction module to the cylinder head.
  • the second alignment element is formed by an alignment pin protruding in the mounting direction from the flange component or from the cylinder head
  • the associated first alignment element is formed by an alignment opening formed in the attachment part or in the suction module, in which the alignment pin engages to align the attachment to the flange component or the suction module to the cylinder head.
  • the first alignment element is formed by an alignment pin in all alignment units.
  • the first alignment element is formed by an alignment opening in all alignment units.
  • a mixed embodiment is also conceivable, so that at least one alignment pin and at least one alignment opening are present on the attachment or on the suction module.
  • an embodiment is preferred in which all the alignment pins are provided on the attachment or on the suction module, an integral shape of the alignment pins on the attachment or on the suction module being preferred here.
  • At least one such alignment opening can be designed as an elongated hole, the longitudinal direction of which is perpendicular to the respective alignment direction of the associated alignment unit. All alignment openings are preferably designed as an elongated hole.
  • At least one such alignment opening is elongated or in the form of an elongated hole and has between its longitudinal ends a guide section which has two mutually opposite wall sections which extend parallel to one another and perpendicular to the respective alignment direction of the associated alignment unit.
  • the associated alignment pin which engages in this elongated alignment opening, can then expediently be guided on the wall sections mentioned.
  • the alignment pin can, for example, have a circular cross section transversely to the mounting direction. However, this is not absolutely necessary.
  • All alignment openings are preferably elongated or designed as an elongated hole.
  • At least one such alignment opening can have a circular cross section perpendicular to the direction of attachment.
  • an embodiment is preferred in which all alignment openings have such a circular cross section.
  • a mixed embodiment is also conceivable, in which at least one alignment opening has such a circular cross section, while at least one other alignment opening is elongated or designed as an elongated hole.
  • the associated alignment pin can have a pin cross section perpendicular to the mounting direction, which, parallel to the alignment direction of the associated alignment unit, has a pin width that is greater than a pin thickness running parallel to the respective other alignment direction .
  • the pin width expediently extends perpendicular to the Pen thickness. Since the pin cross-sections have a larger pin width than the pin thickness, the respective alignment pin within the circular alignment opening defines the associated alignment direction, since there is a greater play for the alignment pin within the alignment opening parallel to the pin thickness, so that the alignment takes place parallel to the pin width.
  • a development is particularly expedient in which the pin cross section is flat, so that a section with a constant pin thickness is present along the pin width between end sections which are spaced apart in a pin width direction.
  • the associated alignment pin can be designed such that it has a smaller bending stiffness perpendicular to the respective alignment direction of the associated alignment unit than parallel to this alignment direction.
  • a bending deformation, preferably an elastic bending deformation, of the alignment pin can take place, as a result of which an alignment between the attachment part and the flange component or between the suction module and the cylinder head takes place parallel to the greater bending rigidity.
  • the pin cross section is flat, the smaller bending stiffness results perpendicular to the relatively small pin thickness, while perpendicularly to the relatively large pin width there is a correspondingly higher bending stiffness.
  • the pin width essentially corresponds to the diameter of the circular alignment opening, as a result of which the alignment takes place parallel to the pin width, while transverse to it, that is to say in the pin thickness, there is still a certain mobility of the alignment pin within the alignment opening is, in particular due to the lower bending stiffness in this direction.
  • all the alignment units can lie in an alignment plane in which the add-on part bears on the flange component or the suction module bears on the cylinder head. This simplifies the alignment between the add-on part and the flange component, or between the suction module and the cylinder head.
  • the flange component is a cylinder head which is attached to the engine block and contains fresh air ducts leading to the cylinders.
  • the add-on part can be a suction module which is attached to the cylinder head and which has a fresh air inlet opening and a plurality of fresh air outlet openings fluidly connected to the fresh air channels.
  • a suction module according to the invention which is suitable for an internal combustion engine of the type described above, has a plurality of first alignment elements fixedly arranged thereon on an attachment side provided for mounting the suction module on the cylinder head.
  • the suction module can have a module housing on which a plurality of first alignment elements are integrally formed on an attachment side provided for mounting the suction module on the cylinder head.
  • the first alignment elements provided on the suction module or on the module housing can preferably be alignment pins and / or alignment openings.
  • attachment part being exemplary in the drawings is designed as a suction module, while the flange component is exemplarily designed as a cylinder head.
  • An internal combustion engine 1 comprises at least one engine block 2, in which a plurality of cylinders 3 are arranged, of which in Fig. 1 however, only one is indicated by a broken line.
  • Fig. 1 connects below the engine block 2 to a crankcase 4, on the underside of which an oil pan 5 is arranged.
  • a cylinder head 6 which contains fresh air ducts 7 leading to the cylinders 3, of which in Fig. 1 only one is recognizable and indicated by a broken line.
  • the cylinder head 6 contains 3 exhaust gas channels 8 for the cylinders, of which in Fig. 1 likewise only one is recognizable and indicated with a broken line.
  • an internal combustion engine 1 is designed as an in-line engine which has only one engine block 2 and only one cylinder head 6.
  • the internal combustion engine 1 is designed as an in-line engine which has only one engine block 2 and only one cylinder head 6.
  • the internal combustion engine 1 is designed as an in-line engine which has only one engine block 2 and only one cylinder head 6.
  • at least two engine blocks 2 and / or at least two cylinder heads 6 are present.
  • two cylinder heads 6 can be provided in an internal combustion engine 1 designed as a V-type engine
  • two engine blocks 2 can also be provided in an internal combustion engine 1 designed as a boxer engine.
  • the cylinder head 6 represents a flange component of the engine block 2.
  • the internal combustion engine 1 also has at least one suction module 9 which is fastened in a suitable manner to the cylinder head 6 and which has a fresh air inlet opening 10 and a plurality of fresh air outlet openings 11 fluidly connected to the fresh air channels 7.
  • the suction module 9 forms part of a fresh air system 12 which supplies the cylinders 3 with fresh air serves.
  • the suction module 9 serves as a fresh air distributor, which distributes the fresh air to the individual cylinders 3.
  • the suction module 9 represents an attachment that is attached to the cylinder head 6 serving as a flange component.
  • the internal combustion engine 1 is equipped with an exhaust system 13, which has an exhaust manifold 14.
  • the exhaust manifold 14 is fastened to the cylinder head 8 and has a plurality of exhaust gas inlet openings 15, which are fluidly connected to the exhaust gas channels 8, and an exhaust gas outlet opening 16.
  • the internal combustion engine 1 is designed as a supercharged internal combustion engine 1 and is provided with a charging device, which here as Exhaust gas turbocharger 17 is designed.
  • the exhaust gas turbocharger 17 has a turbine 18, which is integrated in the exhaust system 13, and a compressor 19, which is integrated in the fresh air system 12. During operation of the internal combustion engine 1, the turbine 18 drives the compressor 19 in the usual way.
  • an alignment device 20 is provided between the suction module 9 and the cylinder head 6 Fig. 1 is indicated with a broken line. It is used to align the suction module 9 relative to the cylinder head 6 when attaching the suction module 9 to the cylinder head 6.
  • This aligning device 20 is provided in addition to fastening means, not shown here, which are used to fasten the suction module 9 to the cylinder head 6. Of these fasteners are in the view of the Fig. 3 Through openings 21 can be seen, which are formed on the suction module 9 and are passed through the fastening screws, not shown here, in order to screw the suction module 9 to the cylinder head 6.
  • the alignment device 20 points according to the 2 to 6 at least three separate alignment units 22, which are arranged spaced apart.
  • the 5 and 6 which represent a schematic of the alignment device 20, are two such alignment units 22 designed so that they bring about an alignment of the suction module 9 with respect to the cylinder head 6 with respect to a first alignment direction 23, which in the 5 and 6 runs vertically.
  • the first alignment direction 23 is also oriented perpendicular to a mounting direction 24, which in the 1, 2 and 4th is indicated by a vertical arrow and in which the suction module 9 is attached to the cylinder head 6.
  • These two alignment units 22 are in the Fig. 2 , 3rd , 5 and 6 arranged on the left or right and can also be referred to below as first or left or as second or right alignment unit 22.
  • the remaining other alignment unit 22 is designed such that it brings about an alignment of the suction module 9 relative to the cylinder head 6 with respect to a second alignment direction 25, which is also oriented perpendicular to the mounting direction 24 and also inclined to the first alignment direction 23.
  • this second alignment direction 25 is oriented essentially perpendicular to the first alignment direction 23 and accordingly runs in the FIGS 5 and 6 horizontal.
  • the first alignment direction 23 and the second alignment direction 25 define an alignment plane 26 which is shown in FIG Fig. 4 is indicated and which runs essentially perpendicular to the mounting direction 24.
  • This other alignment unit 22 is shown in FIGS Fig. 2 , 3rd , 5 and 6 arranged in the center and can also be referred to below as the third or middle alignment unit 22.
  • exactly three such alignment units 22 are provided, all of which bring about either alignment in the first alignment direction 23 or in the second alignment direction 25.
  • the variant shown here is preferred, in which two alignment units 22, namely the first and second alignment unit 22, each bring about an alignment in the first alignment direction 23, while only one alignment unit 22, namely the third alignment device 22, effects an alignment in the second alignment direction 25.
  • the Both the first and second alignment units 22 assigned to the first alignment direction 23 are arranged spaced apart from one another in the second alignment direction 25.
  • the third or middle alignment unit 22 assigned to the second alignment direction 25 is arranged with respect to the second alignment direction 25 between the two left and right alignment units 22 assigned to the first alignment direction 23.
  • the third alignment unit 22 assigned to the second alignment direction 25 is arranged offset in the first alignment direction 23 to the two first and second alignment units 22 assigned to the first alignment direction 23. Furthermore, it is provided here that the third alignment unit 22 assigned to the second alignment direction 25 is arranged centrally with respect to a longitudinal direction 27 of the suction module 9 between the two first and second alignment units 22 assigned to the first alignment direction 23.
  • the longitudinal direction 27 of the suction module 9 is in the Fig. 2 , 3rd , 5 and 6 each indicated by a double arrow and extends parallel to a direction in which the individual cylinders 3 of the engine block 2 are arranged side by side in the engine block 2. This longitudinal direction 27 runs in Fig. 1 perpendicular to the plane of the drawing.
  • the second alignment direction 25 runs parallel to the longitudinal direction 27 of the suction module 9.
  • the individual alignment units 22 each have a first alignment element 28 fixedly arranged on the suction module 9 and a second alignment element 29 permanently arranged on the cylinder head 6.
  • one of the two alignment elements 28, 29 is designed as an alignment pin 30, while the other alignment element 28, 29 is designed here as an alignment opening 31, into which the associated alignment pin 30 engages to align the suction module 9 with the cylinder head 6.
  • the first alignment element 28 formed on the suction module 9 is formed by such an alignment pin 30, while that on the cylinder head 6 formed second alignment element 29 is each formed by such an alignment opening 31.
  • the respective alignment opening 31 is elongated or formed by an elongated hole 32.
  • the longitudinal direction of the respective elongated hole 32 extends perpendicular to the alignment direction 23, 25, which is assigned to the respective alignment unit 22.
  • the elongated alignment opening 31 has between its longitudinal ends a guide section 33 which is defined by two mutually opposite, parallel wall sections. These wall sections extend perpendicular to the alignment direction 23, 25, which is assigned to the respective alignment unit 22.
  • the guide section 33 thus defines the alignment direction 23, 25 of the respective alignment unit 22.
  • the associated alignment pin 30 is now guided in said guide section 33 on the wall sections mentioned, such that the respective alignment pin 30 is in the respective elongated alignment opening 31 with respect to the alignment direction 23, 25 , which is assigned to this alignment unit 22, is centered in the alignment opening 31, while it is movable perpendicularly to it, that is to say in the respective other alignment direction 23, 25, within the elongated alignment opening 31.
  • the alignment pin 30 assigned to the elongated alignment openings 31 can be, as in the example of FIG Fig. 5 have a circular cross section perpendicular to the mounting direction 24.
  • Fig. 6 Another embodiment is explained in more detail, which also in the example of 2 to 4 is realized.
  • This embodiment is characterized by a particularly inexpensive producibility. It is characterized in that the alignment openings 31 each have a circular cross section perpendicular to the mounting direction 24.
  • the associated alignment pins 30 are designed such that they have a lower bending stiffness perpendicular to the alignment direction 23, 25, which is assigned to the respective alignment unit 22, than parallel to this alignment direction 23, 25, which is assigned to the respective alignment unit 22.
  • the first alignment unit 22 shown on the left provides the first alignment direction 23.
  • the associated alignment pin 30 is then provided with a smaller bending stiffness in the second alignment direction 25 than in the first alignment direction 23.
  • FIG Fig. 6 second alignment unit 22 shown on the right the reverse situation arises with the in Fig. 6 third alignment unit 22 shown in the center.
  • the associated alignment pin 30 has a pin cross section perpendicular to the mounting direction 24, which has a pin width 34 parallel to the alignment direction 23, 25, which is assigned to the associated alignment unit 22, which is larger than a pin thickness 35, which runs parallel to the respective other alignment direction 23, 25.
  • the pin width 34 is oriented parallel to the first alignment direction 23 and is dimensioned significantly larger than the associated pin thickness 35, which is oriented parallel to the second alignment direction 25.
  • the third alignment unit 22 shown in the center reverses the orientations of the pin width 34 and pin thickness 35.
  • the respective pin cross-section is flat, such that the pin cross-section along the pin width 34 has a section 36 between the end sections, which are not specified in more detail and which are spaced apart in the pin width direction, in which the pin thickness 35 is constant.
  • the suction module 9 expediently has a module housing 37 on which the air inlet opening 10 and the air outlet openings 11 are formed.
  • the mounting side 38 is also located on this module housing 37.
  • the through openings 21 of the fastening means are also formed on the module housing 37.

Description

Die vorliegende Erfindung betrifft eine Brennkraftmaschine mit einem Anbauteil, insbsondere mit einem Saugmodul, mit den Merkmalen des Oberbegriffs des Anspruchs 1. Die Erfindung betrifft außerdem ein Saugmodul für eine derartige Brennkraftmaschine.The present invention relates to an internal combustion engine with an attachment, in particular with a suction module, with the features of the preamble of claim 1. The invention also relates to a suction module for such an internal combustion engine.

Eine gattungsgemäße Brennkraftmaschine umfasst zumindest einen Motorblock, der mehrere Zylinder enthält, sowie wenigstens einen Zylinderkopf, der am Motorblock befestigt ist und zu den Zylindern führende Frischluftkanäle enthält. Ferner ist zumindest ein Saugmodul vorgesehen, das am Zylinderkopf befestigt ist und das eine Frischlufteinlassöffnung sowie mehrere, mit den Frischluftkanälen fluidisch verbundene Frischluftauslassöffnungen aufweist.A generic internal combustion engine comprises at least one engine block, which contains several cylinders, and at least one cylinder head, which is attached to the engine block and contains fresh air channels leading to the cylinders. Furthermore, at least one suction module is provided, which is attached to the cylinder head and which has a fresh air inlet opening and a plurality of fresh air outlet openings fluidly connected to the fresh air channels.

Ein derartiges Saugmodul kann auch als Frischluftverteiler bezeichnet werden und kann sowohl bei aufgeladenen Motoren als auch bei Saugmotoren zur Anwendung kommen. Das Saugmodul ist an den Zylinderkopf angebaut und repräsentiert insoweit ein Anbauteil. Der an den Motorblock angebaute Zylinderkopf repräsentiert dabei ein Flanschbauteil, das am Motorblock vorgesehen ist, wie in Dokument DE 102010020875 gezeigt.Such a suction module can also be referred to as a fresh air distributor and can be used both in supercharged engines and in naturally aspirated engines. The suction module is attached to the cylinder head and thus represents an attachment. The cylinder head attached to the engine block represents a flange component that is provided on the engine block, as in the document DE 102010020875 shown.

Üblicherweise besitzt das Saugmodul im Bereich der Frischluftauslassöffnungen einen Flansch, der eine Verschraubung mit dem Zylinderkopf ermöglicht. Je nach Konfiguration kann dabei ein vergleichsweise komplexes Schraubbild vorliegen. Zur Realisierung der Verschraubung muss daher ein Lochbild des Zylinderkopfs mit einem Lochbild des Flansches in Überdeckung gebracht werden, um Befestigungsschrauben durch die Durchgangslöcher des Flansches in die Schraublöcher des Zylinderkopfs einschrauben zu können. Insbesondere im Rahmen einer Serienmontage und vorzugsweise in Verbindung mit einer automatisierten Verschraubung ist hierzu ein relativ hoher Aufwand zum ordnungsgemäßen Ausrichten des Saugmoduls gegenüber dem Zylinderkopf erforderlich. Eine derartige Ausrichtung erfolgt beispielsweise händisch durch einen Monteur.The suction module usually has a flange in the area of the fresh air outlet openings, which enables screwing to the cylinder head. Depending on the configuration, there may be a comparatively complex screw pattern. To implement the screw connection, a hole pattern of the cylinder head must be overlapped with a hole pattern of the flange in order to be able to screw fastening screws through the through holes of the flange into the screw holes of the cylinder head. In particular as part of a series assembly and preferably in connection with an automated screw connection this requires a relatively high level of effort to properly align the suction module with respect to the cylinder head. Such alignment is carried out manually, for example, by a fitter.

Entsprechende Probleme treten auch bei anderen Anbauteilen auf, die über ein Flanschbauteil an den Motorblock angebaut werden müssen.Corresponding problems also occur with other attachments that have to be attached to the engine block via a flange component.

Die vorliegende Erfindung beschäftigt sich mit dem Problem, für eine Brennkraftmaschine der vorstehend beschriebenen Art bzw. für ein zugehöriges Saugmodul eine verbesserte Ausführungsform anzugeben, die sich insbesondere durch eine vereinfachte Montage der Brennkraftmaschine auszeichnet.The present invention deals with the problem of specifying an improved embodiment for an internal combustion engine of the type described above or for an associated suction module, which is characterized in particular by a simplified assembly of the internal combustion engine.

Dieses Problem wird erfindungsgemäß durch die Gegenstände der unabhängigen Ansprüche gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.According to the invention, this problem is solved by the subjects of the independent claims. Advantageous embodiments are the subject of the dependent claims.

Die Erfindung beruht auf dem allgemeinen Gedanken, am Anbauteil, insbesondere am Saugmodul, und am Flanschbauteil, insbesondere am Zylinderkopf, eine Ausrichteinrichtung auszubilden, die beim Anbauen des Anbauteils am Flanschbauteil, insbesondere des Saugmoduls am Zylinderkopf, ein Ausrichten des Anbauteils relativ zum Flanschbautiel, insbesondere des Saugmoduls relativ zum Zylinderkopf, bewirkt. Die hierzu vorgesehene Ausrichteinrichtung ist bevorzugt zwischen dem Anbauteil und dem Flanschbauteil, also bevorzugt zwischen dem Saugmodul und dem Zylinderkopf, angeordnet, so dass sie sich einerseits an einer dem Flanschbauteil, vorzugsweise dem Zylinderkopf, zugewandten Anbauseite des Anbauteils, isnbesondere des Saugmoduls, und andererseits an einer dem Anbauteil, vorzugsweise dem Saugmodul, zugewandten Anschlussseite des Flanschbautiels, insbesondere des Zylinderkopfs, befindet. Beim Anbauen des Anbauteils am Flanschbauteil, insbesondere des Saugmoduls am Zylinderkopf, kommt nun die Anbauseite des Anbauteils, vorzugsweise des Saugmoduls, an der Anschlussseite des Flanschbauteils, vorzugsweise des Zylinderkopfs, zur Anlage, so dass die zwischen Anbautiel und Flanschbauteil, insbesondere zwischen Saugmodul und Zylinderkopf, vorgesehene Ausrichteinrichtung wirken kann und das gewünschte Ausrichten des Anbauteils relativ zum Flanschbauteil, insbesondere des Saugmoduls relativ zum Zylinderkopf, bewirkt. Durch die Integration einer derartigen Ausrichteinrichtung in das Anbauteil und das Flanschbauteil, insbesondere in das Saugmodul und den Zylinderkopf, erfolgt beim Anbauen des Anbauteils, vorzugsweise des Saugmoduls, zwangsläufig und automatisch die erforderliche Ausrichtung gegenüber dem Flanschbauteil, vorzugsweise dem Zylinderkopf, so dass beispielsweise das vorstehend genannte Lochbild des Anbauteils, insbesondere des Saugmoduls, mit hinreichender Genauigkeit deckungsgleich auf das Lochbild des Flanschbauteils, insbesondere des Zylinderkopfs, ausgerichtet wird. Die Montage des Anbauteils, vorzugsweise des Saugmoduls, wird dadurch vereinfacht und lässt sich insbesondere besser automatisieren.The invention is based on the general idea of forming an alignment device on the attachment, in particular on the suction module, and on the flange component, in particular on the cylinder head, which, when attaching the attachment to the flange component, in particular the suction module on the cylinder head, aligns the attachment relative to the flange component, in particular of the suction module relative to the cylinder head. The alignment device provided for this purpose is preferably arranged between the attachment part and the flange component, that is to say preferably between the suction module and the cylinder head, so that it is on the one hand on an attachment side of the attachment part facing the flange component, preferably the cylinder head, in particular the suction module, and on the other hand one of the attachment part, preferably the suction module, facing the connection side of the flange component, in particular the cylinder head. When attaching the add-on part to the flange component, in particular the suction module on the cylinder head, Now comes the attachment side of the attachment, preferably the suction module, on the connection side of the flange component, preferably the cylinder head, so that the alignment device provided between the attachment and flange component, in particular between the suction module and cylinder head, can act and the desired alignment of the attachment relative to Flange component, in particular the suction module relative to the cylinder head. Due to the integration of such an alignment device in the attachment and the flange component, in particular in the suction module and the cylinder head, when attaching the attachment, preferably the suction module, the required alignment with the flange component, preferably the cylinder head, is automatically and automatically carried out, so that, for example, the above mentioned hole pattern of the attachment, in particular the suction module, is aligned with the hole pattern of the flange component, in particular the cylinder head, with sufficient accuracy. The assembly of the add-on part, preferably the suction module, is thereby simplified and in particular can be automated better.

Die zwischen Anbauteil und Flanschbauteil, insbesondere zwischen Saugmodul und Zylinderkopf, vorgesehene Ausrichteinrichtung ist dabei zusätzlich zu Befestigungsmitteln vorgesehen, die zum Befestigen des Anbauteils am Flanschbauteil, insbesondere des Saugmoduls am Zylinderkopf, dienen. Derartige Befestigungsmittel sind beispielsweise Schrauben zum Verschrauben des Anbauteils am Flanschbauteil, insbesondere des Saugmoduls am Zylinderkopf, die am Anbauteil, vorzugsweise am Saugmodul vorgesehene Durchgangsöffnungen durchdringen und in Schrauböffnungen des Flanschbauteils, vorzugsweise des Zylinderkopfs, eindringen. Die mit Hilfe der Ausrichteinrichtung bewirkte Ausrichtung zwischen Anbauteil und Flanschbauteil, insbesondere zwischen Saugmodul und Zylinderkopf, erfolgt dabei vor dem Befestigen des Anbauteils am Flanschbauteil, insbesondere des Saugmoduls am Zylinderkopf, also insbesondere vor der vorgenannten Verschraubung. Ferner erfolgt die Ausrichtung in einer Ausrichtebene, die im Wesentlichen senkrecht zur Anbaurichtung orientiert ist und die im Wesentlichen parallel zur vorgenannten Anbauseite des Anbauteils, vorzugsweise des Saugmoduls, und parallel zur vorgenannten Anschlussseite des Flanschbauteils, vorzugsweise des Zylinderkopfs, verläuft, die im angebauten Zustand aneinander anliegen.The alignment device provided between the attachment part and the flange component, in particular between the suction module and the cylinder head, is provided in addition to fastening means which serve to fasten the attachment part to the flange component, in particular the suction module, to the cylinder head. Such fasteners are, for example, screws for screwing the attachment to the flange component, in particular the suction module on the cylinder head, which penetrate through openings provided on the attachment, preferably on the suction module, and penetrate into screw openings in the flange component, preferably the cylinder head. The alignment between the attachment and the flange component, in particular between the suction module and the cylinder head, which is brought about with the aid of the alignment device, takes place before the attachment of the attachment to the flange component, in particular the suction module, to the cylinder head, in particular before the aforementioned screw connection. Furthermore, the alignment takes place in an alignment plane, which is oriented essentially perpendicular to the mounting direction and which runs essentially parallel to the aforementioned mounting side of the attachment, preferably the suction module, and parallel to the aforementioned connection side of the flange component, preferably the cylinder head, which abut one another in the mounted state.

Anbauteile im Sinne der vorliegenden Erfindung sind beispielsweise Saugmodule, Zylinderkopfhauben, Ölnebelabscheider oder Kühler. Derartige Anbauteile können über eine größere Erstreckung in Längsrichtung als in Querrichtung verfügen, wodurch sich kleinere Abweichungen in der Positionierung über die gesamte Bauteilerstreckung erheblich auswirken können. Die nachfolgend am Beispiel des Saugmoduls und des Zylinderkopfs näher beschriebenen Ausführungsformen und Ausführungsbeispiele sind analog auf die anderen Anbauteile und Flanschbauteile übertragbar.Add-on parts in the sense of the present invention are, for example, suction modules, cylinder head covers, oil mist separators or coolers. Add-on parts of this type can have a greater extent in the longitudinal direction than in the transverse direction, as a result of which minor deviations in the positioning can have a considerable effect over the entire component extent. The embodiments and exemplary embodiments described in more detail below using the example of the suction module and the cylinder head can be transferred analogously to the other attachments and flange components.

Entsprechend einer vorteilhaften Ausführungsform kann die Ausrichteinrichtung mindestens drei separate und beabstandet voneinander angeordnete Ausrichteinheiten aufweisen, wobei zumindest eine solche Ausrichteinheit eine Ausrichtung des Anbauteils zum Flanschbauteil bzw. des Saugmoduls zum Zylinderkopf bezüglich einer ersten Ausrichtrichtung bewirkt, die senkrecht zu einer Anbaurichtung orientiert ist, in der das Anbauteil an das Flanschbauteil bzw. in der das Saugmodul an den Zylinderkopf angebaut ist. Ferner bewirkt zumindest eine andere solche Ausrichteinheit eine Ausrichtung des Anbauteils zum Flanschbauteil bzw. des Saugmoduls zum Zylinderkopf bezüglich einer zweiten Ausrichtrichtung, die senkrecht zur Anbaurichtung und geneigt zur ersten Ausrichtrichtung orientiert ist. Durch die beiden senkrecht zur Ausrichtrichtung und geneigt zueinander verlaufenden Ausrichtrichtungen wird eine Ausrichtebene definiert, die sich senkrecht zur Anbaurichtung erstreckt. Zweckmäßig sind die beiden Ausrichtrichtungen im Wesentlichen senkrecht zueinander orientiert, so dass der zwischen den beiden Ausrichtrichtungen vorliegende Winkel 90° ± 5° aufweist.According to an advantageous embodiment, the aligning device can have at least three separate and spaced apart aligning units, at least one such aligning unit bringing about an alignment of the attachment to the flange component or the suction module to the cylinder head with respect to a first alignment direction, which is oriented perpendicular to an attachment direction in which the attachment to the flange component or in which the suction module is attached to the cylinder head. Furthermore, at least one other such alignment unit effects an alignment of the attachment to the flange component or the suction module to the cylinder head with respect to a second alignment direction, which is oriented perpendicular to the attachment direction and inclined to the first alignment direction. The two alignment directions perpendicular to the alignment direction and inclined to one another define an alignment plane which extends perpendicular to the mounting direction. The two alignment directions are expedient oriented essentially perpendicular to each other, so that the angle between the two alignment directions is 90 ° ± 5 °.

Gemäß einer vorteilhaften Ausführungsform kann vorgesehen sein, dass alle Ausrichteinheiten eine Ausrichtung des Anbauteils zum Flanschbauteil bzw. des Saugmoduls zum Zylinderkopf ausschließlich entweder in der ersten Ausrichtrichtung oder in der zweiten Ausrichtrichtung bewirken, so dass nur diese beiden Ausrichtrichtungen mittels der Ausrichteinheiten definiert werden. Hierdurch wird eine besonders einfache und effiziente Positionierung bzw. Ausrichtung zwischen Anbauteil und Flanschbauteil respektive zwischen Saugmodul und Zylinderkopf erreicht.According to an advantageous embodiment, it can be provided that all alignment units bring about an alignment of the attachment to the flange component or the suction module to the cylinder head exclusively either in the first alignment direction or in the second alignment direction, so that only these two alignment directions are defined by means of the alignment units. This results in a particularly simple and efficient positioning or alignment between the attachment part and the flange component or between the suction module and the cylinder head.

Besonders vorteilhaft ist eine Ausführungsform, bei der genau drei Ausrichteinheiten vorgesehen sind, wobei zwei dieser Ausrichteinheiten, also eine erste Ausrichteinheit und eine zweite Ausrichteinheit eine Ausrichtung in der einen Ausrichtrichtung bewirken, während eine dieser Ausrichteinheiten, also die dritte Ausrichteinheit eine Ausrichtung in der anderen Ausrichtrichtung bewirkt. Beispielsweise bewirken die erste und zweite Ausrichteinheit jeweils eine Ausrichtung in der ersten Ausrichtrichtung, während die dritte Ausrichteinheit eine Ausrichtung in der zweiten Ausrichtrichtung bewirkt, oder umgekehrt.An embodiment is particularly advantageous in which exactly three alignment units are provided, wherein two of these alignment units, i.e. a first alignment unit and a second alignment unit, bring about alignment in one alignment direction, while one of these alignment units, i.e. the third alignment unit, aligns in the other alignment direction causes. For example, the first and second alignment units each effect an alignment in the first alignment direction, while the third alignment unit effects an alignment in the second alignment direction, or vice versa.

Gemäß einer besonders vorteilhaften Weiterbildung kann vorgesehen sein, dass die beiden der einen Ausrichtrichtung zugeordneten Ausrichteinheiten, also die erste und zweite Ausrichteinheit in der anderen Ausrichtrichtung voneinander beabstandet sind. Zusätzlich oder alternativ kann vorgesehen sein, dass die eine der anderen Ausrichtrichtung zugeordnete Ausrichteinheit, also die dritte Ausrichteinheit bezüglich dieser Ausrichtrichtung zwischen den beiden der einen Ausrichtrichtung zugeordneten Ausrichteinheiten, also zwischen der ersten und der zweiten Ausrichteinheit angeordnet ist. Des Weiteren kann zusätzlich oder alternativ vorgesehen sein, dass die eine der anderen Ausrichtrichtung zugeordnete Ausrichteinheit (dritte Ausrichteinheit) in der einen Ausrichtrichtung versetzt zu den beiden der einen Ausrichtrichtung zugeordneten Ausrichteinheiten (erste und zweite Ausrichteinheit) angeordnet ist. Die vorstehend genannten Maßnahmen können jeweils einzeln oder gemeinsam oder in beliebiger Kombination realisiert werden und bewirken jeweils eine verbesserte Ausrichtung des Anbauteils gegenüber dem Flanschbauteil bzw. des Saugmoduls gegenüber dem Zylinderkopf. Darüber hinaus kann vorgesehen sein, dass die eine Ausrichteinheit, die der anderen Ausrichtrichtung zugeordnet ist, also die dritte Ausrichteinheit im Wesentlichen mittig zwischen der ersten und der dritten Ausrichteinheit, also zwischen den beiden anderen Ausrichteinheiten angeordnet ist, die der einen Ausrichtrichtung zugeordnet sind. Diese mittige Ausrichtung bezieht sich dabei auf eine Längsrichtung des Anbauteils bzw. des Flanschbauteils, respektive des Saugmoduls bzw. des Zylinderkopfs und entspricht insbesondere der Richtung, in der die Zylinder des Zylinderkopfs nebeneinander angeordnet sind. Die der mittig angeordneten (dritten) Ausrichteinheit zugeordnete Ausrichtrichtung erstreckt sich vorzugsweise parallel zur vorstehend genannten Längsrichtung.According to a particularly advantageous development, it can be provided that the two alignment units assigned to one alignment direction, that is to say the first and second alignment units, are spaced apart from one another in the other alignment direction. Additionally or alternatively, it can be provided that the alignment unit assigned to the other alignment direction, that is to say the third alignment unit with respect to this alignment direction, is arranged between the two alignment units assigned to the one alignment direction, that is to say between the first and the second alignment unit. Furthermore, additionally or alternatively it can be provided that the alignment unit assigned to the other alignment direction (third alignment unit) is offset in one alignment direction from the two alignment units assigned to the one alignment direction (first and second alignment unit). The above-mentioned measures can be implemented individually or together or in any combination and each result in an improved alignment of the add-on part with respect to the flange component or the suction module with respect to the cylinder head. In addition, it can be provided that the one alignment unit that is assigned to the other alignment direction, that is to say the third alignment unit, is arranged essentially centrally between the first and the third alignment unit, that is to say between the two other alignment units that are assigned to the one alignment direction. This central alignment relates to a longitudinal direction of the add-on part or the flange component or the suction module or the cylinder head and corresponds in particular to the direction in which the cylinders of the cylinder head are arranged next to one another. The alignment direction assigned to the centrally arranged (third) alignment unit preferably extends parallel to the aforementioned longitudinal direction.

Gemäß einer anderen vorteilhaften Ausführungsform können die Ausrichteinheiten jeweils ein am Anbauteil bzw. am Saugmodul fest angeordnetes erstes Ausrichtelement und ein am Flanschbauteil bzw. am Zylinderkopf fest angeordnetes zweites Ausrichtelement aufweisen, die zum Ausrichten des Anbauteils relativ zum Flanschbauteil bzw. des Saugmoduls relativ zum Zylinderkopf in der jeweiligen Ausrichtrichtung zusammenwirken. Bevorzugt ist dabei eine Ausführungsform, bei welcher die ersten Ausrichtelemente integral am Anbauteil bzw. am Saugmodul ausgeformt sind. Zusätzlich oder alternativ können die zweiten Ausrichtelemente integral am Flanschbauteil bzw. am Zylinderkopf ausgeformt sein. Gemäß einer Weiterbildung kann zumindest bei einer Ausrichteinheit das erste Ausrichtelement durch einen in der Anbaurichtung vom Anbauteil bzw. vom Saugmodul abstehenden Ausrichtstift gebildet sein, während das zugehörige zweite Ausrichtelement durch eine im Flanschbauteil bzw. im Zylinderkopf ausgebildete Ausrichtöffnung gebildet ist, in die der Ausrichtstift zum Ausrichten des Anbauteils zum Flanschbauteil bzw. des Saugmoduls zum Zylinderkopf eingreift. Zusätzlich oder alternativ kann vorgesehen sein, dass zumindest bei einer Ausrichteinheit das zweite Ausrichtelement durch einen in der Anbaurichtung vom Flanschbauteil bzw. vom Zylinderkopf abstehenden Ausrichtstift gebildet ist, während das zugehörige erste Ausrichtelement durch eine im Anbauteil bzw. im Saugmodul ausgebildete Ausrichtöffnung gebildet ist, in die der Ausrichtstift zum Ausrichten des Anbauteils zum Flanschbauteil bzw. des Saugmoduls zum Zylinderkopf eingreift. Die zugehörigen Ausrichtelemente der jeweiligen Ausrichteinheit wirken somit durch einen formschlüssigen Eingriff zusammen und bewirken dadurch eine effiziente Ausrichtung des Anbauteils relativ zum Flanschbauteil bzw. des Saugmoduls relativ zum Zylinderkopf.According to another advantageous embodiment, the alignment units can each have a first alignment element fixedly arranged on the attachment part or on the suction module and a second alignment element fixedly arranged on the flange component or on the cylinder head, which aligns the attachment part relative to the flange component or the suction module relative to the cylinder head in interact in the respective alignment direction. An embodiment is preferred in which the first alignment elements are integrally formed on the attachment or on the suction module. Additionally or alternatively, the second alignment elements can be integrally formed on the flange component or on the cylinder head. According to a development, at least in one alignment unit, the first alignment element can be formed by an alignment pin protruding in the mounting direction from the attachment or from the suction module, while the associated second alignment element is formed by an alignment opening formed in the flange component or in the cylinder head, into which the alignment pin extends Alignment of the attachment to the flange component and the suction module to the cylinder head. Additionally or alternatively, it can be provided that at least in one alignment unit, the second alignment element is formed by an alignment pin protruding in the mounting direction from the flange component or from the cylinder head, while the associated first alignment element is formed by an alignment opening formed in the attachment part or in the suction module, in which the alignment pin engages to align the attachment to the flange component or the suction module to the cylinder head. The associated alignment elements of the respective alignment unit thus interact through a form-fitting engagement and thereby bring about an efficient alignment of the add-on part relative to the flange component or of the suction module relative to the cylinder head.

Grundsätzlich kann vorgesehen sein, dass bei allen Ausrichteinheiten das erste Ausrichtelement durch einen Ausrichtstift gebildet ist. Alternativ kann vorgesehen sein, dass bei allen Ausrichteinheiten das erste Ausrichtelement durch eine Ausrichtöffnung gebildet ist. Grundsätzlich ist jedoch auch eine gemischte Ausführungsform denkbar, so dass am Anbauteil bzw. am Saugmodul zumindest ein Ausrichtstift und zumindest eine Ausrichtöffnung vorhanden sind. Bevorzugt ist jedoch eine Ausführungsform, bei der sämtliche Ausrichtstifte am Anbauteil bzw. am Saugmodul vorgesehen sind, wobei hier eine integrale Ausformung der Ausrichtstifte am Anbauteil bzw. am Saugmodul bevorzugt ist.In principle, it can be provided that the first alignment element is formed by an alignment pin in all alignment units. Alternatively, it can be provided that the first alignment element is formed by an alignment opening in all alignment units. In principle, however, a mixed embodiment is also conceivable, so that at least one alignment pin and at least one alignment opening are present on the attachment or on the suction module. However, an embodiment is preferred in which all the alignment pins are provided on the attachment or on the suction module, an integral shape of the alignment pins on the attachment or on the suction module being preferred here.

Entsprechend einer vorteilhaften Weiterbildung kann wenigstens eine solche Ausrichtöffnung als Langloch ausgestaltet sein, dessen Längsrichtung senkrecht zur jeweiligen Ausrichtrichtung der zugehörigen Ausrichteinheit verläuft. Vorzugsweise sind alle Ausrichtöffnungen als Langloch ausgestaltet.According to an advantageous development, at least one such alignment opening can be designed as an elongated hole, the longitudinal direction of which is perpendicular to the respective alignment direction of the associated alignment unit. All alignment openings are preferably designed as an elongated hole.

Des Weiteren kann vorgesehen sein, dass zumindest eine solche Ausrichtöffnung länglich oder als Langloch ausgestaltet ist und zwischen ihren Längsenden einen Führungsabschnitt aufweist, der zwei einander gegenüberliegende Wandabschnitte aufweist, die sich parallel zueinander und senkrecht zur jeweiligen Ausrichtrichtung der zugehörigen Ausrichteinheit erstrecken. Zweckmäßig kann dann der zugehörige Ausrichtstift, der in diese längliche Ausrichtöffnung eingreift, an den genannten Wandabschnitten geführt sein. Der Ausrichtstift kann beispielsweise quer zur Anbaurichtung einen kreisförmigen Querschnitt besitzen. Dies ist jedoch nicht zwingend erforderlich.Furthermore, it can be provided that at least one such alignment opening is elongated or in the form of an elongated hole and has between its longitudinal ends a guide section which has two mutually opposite wall sections which extend parallel to one another and perpendicular to the respective alignment direction of the associated alignment unit. The associated alignment pin, which engages in this elongated alignment opening, can then expediently be guided on the wall sections mentioned. The alignment pin can, for example, have a circular cross section transversely to the mounting direction. However, this is not absolutely necessary.

Vorzugsweise sind alle Ausrichtöffnungen länglich bzw. als Langloch konzipiert.All alignment openings are preferably elongated or designed as an elongated hole.

Gemäß einer anderen vorteilhaften Weiterbildung kann zumindest eine solche Ausrichtöffnung senkrecht zur Anbaurichtung einen kreisförmigen Querschnitt aufweisen. Bevorzugt ist auch hier eine Ausführungsform, bei der alle Ausrichtöffnungen einen derartigen kreisförmigen Querschnitt besitzen. Denkbar ist jedoch auch eine gemischte Ausführungsform, bei der zumindest eine Ausrichtöffnung einen solchen kreisförmigen Querschnitt besitzt, während zumindest eine andere Ausrichtöffnung länglich oder als Langloch ausgestaltet ist.According to another advantageous development, at least one such alignment opening can have a circular cross section perpendicular to the direction of attachment. Here, too, an embodiment is preferred in which all alignment openings have such a circular cross section. However, a mixed embodiment is also conceivable, in which at least one alignment opening has such a circular cross section, while at least one other alignment opening is elongated or designed as an elongated hole.

Sofern bei der jeweiligen Ausrichteinheit die Ausrichtöffnung einen kreisförmigen Querschnitt aufweist, kann gemäß einer vorteilhaften Ausführungsform der zugehörige Ausrichtstift senkrecht zur Anbaurichtung einen Stiftquerschnitt aufweisen, der parallel zur Ausrichtrichtung der zugehörigen Ausrichteinheit eine Stiftbreite aufweist, die größer ist als eine parallel zur jeweils anderen Ausrichtrichtung verlaufende Stiftdicke. Zweckmäßig erstreckt sich dabei die Stiftbreite senkrecht zur Stiftdicke. Da die Stiftquerschnitte eine größere Stiftbreite als Stiftdicke besitzen, definiert der jeweilige Ausrichtstift innerhalb der kreisförmigen Ausrichtöffnung die zugehörige Ausrichtrichtung, da parallel zur Stiftdicke ein größeres Spiel für den Ausrichtstift innerhalb der Ausrichtöffnung vorliegt, so dass die Ausrichtung parallel zur Stiftbreite erfolgt.If the alignment opening in the respective alignment unit has a circular cross section, according to an advantageous embodiment, the associated alignment pin can have a pin cross section perpendicular to the mounting direction, which, parallel to the alignment direction of the associated alignment unit, has a pin width that is greater than a pin thickness running parallel to the respective other alignment direction . The pin width expediently extends perpendicular to the Pen thickness. Since the pin cross-sections have a larger pin width than the pin thickness, the respective alignment pin within the circular alignment opening defines the associated alignment direction, since there is a greater play for the alignment pin within the alignment opening parallel to the pin thickness, so that the alignment takes place parallel to the pin width.

Besonders zweckmäßig ist eine Weiterbildung, bei welcher der Stiftquerschnitt flach ist, so dass entlang der Stiftbreite zwischen Endabschnitten, die in einer Stiftbreitenrichtung voneinander beabstandet sind, ein Abschnitt mit konstanter Stiftdicke vorliegt.A development is particularly expedient in which the pin cross section is flat, so that a section with a constant pin thickness is present along the pin width between end sections which are spaced apart in a pin width direction.

Zusätzlich oder alternativ kann für den Fall, dass die jeweilige Ausrichteinheit eine Ausrichtöffnung mit kreisförmigem Querschnitt aufweist, der zugehörige Ausrichtstift so konzipiert sein, dass er senkrecht zur jeweiligen Ausrichtrichtung der zugehörigen Ausrichteinheit eine kleinere Biegesteifigkeit aufweist als parallel zu dieser Ausrichtrichtung. Somit kann beim Ausrichten des Anbauteils bzw. des Saugmoduls gegenüber dem Flanschbauteil bzw. dem Zylinderkopf eine Biegeverformung, vorzugsweise eine elastische Biegeverformung, des Ausrichtstifts erfolgen, wodurch parallel zur größeren Biegesteifigkeit eine Ausrichtung zwischen Anbauteil und Flanschbauteil bzw. zwischen Saugmodul und Zylinderkopf erfolgt.Additionally or alternatively, in the event that the respective alignment unit has an alignment opening with a circular cross section, the associated alignment pin can be designed such that it has a smaller bending stiffness perpendicular to the respective alignment direction of the associated alignment unit than parallel to this alignment direction. Thus, when the attachment or the suction module is aligned with the flange component or the cylinder head, a bending deformation, preferably an elastic bending deformation, of the alignment pin can take place, as a result of which an alignment between the attachment part and the flange component or between the suction module and the cylinder head takes place parallel to the greater bending rigidity.

Sofern der Stiftquerschnitt flach ist, ergibt sich die kleinere Biegesteifigkeit senkrecht zur relativ kleinen Stiftdicke, während senkrecht zur relativ großen Stiftbreite eine entsprechend höhere Biegesteifigkeit vorliegt. Insbesondere kann dann vorgesehen sein, dass die Stiftbreite im Wesentlichen dem Durchmesser der kreisförmigen Ausrichtöffnung entspricht, wodurch die Ausrichtung parallel zur Stiftbreite erfolgt, während quer dazu, also in der Stiftdicke, nach wie vor eine gewisse Beweglichkeit des Ausrichtstifts innerhalb der Ausrichtöffnung vorhanden ist, nämlich insbesondere durch die in dieser Richtung geringere Biegesteifigkeit.If the pin cross section is flat, the smaller bending stiffness results perpendicular to the relatively small pin thickness, while perpendicularly to the relatively large pin width there is a correspondingly higher bending stiffness. In particular, it can then be provided that the pin width essentially corresponds to the diameter of the circular alignment opening, as a result of which the alignment takes place parallel to the pin width, while transverse to it, that is to say in the pin thickness, there is still a certain mobility of the alignment pin within the alignment opening is, in particular due to the lower bending stiffness in this direction.

Gemäß einer vorteilhaften Ausführungsform können alle Ausrichteinheiten in einer Ausrichtebene liegen, in der das Anbauteil am Flanschbauteil bzw. das Saugmodul am Zylinderkopf anliegt. Hierdurch vereinfacht sich die Ausrichtung zwischen Anbauteil und Flanschbauteil, respektive zwischen Saugmodul und Zylinderkopf.According to an advantageous embodiment, all the alignment units can lie in an alignment plane in which the add-on part bears on the flange component or the suction module bears on the cylinder head. This simplifies the alignment between the add-on part and the flange component, or between the suction module and the cylinder head.

Bevorzugt ist eine Ausführungsform, bei der das Flanschbauteil ein Zylinderkopf ist, der am Motorblock befestigt ist und zu den Zylindern führende Frischluftkanäle enthält. Außerdem kann das Anbauteil ein Saugmodul sein, das am Zylinderkopf befestigt ist und das eine Frischlufteinlassöffnung sowie mehrere, mit den Frischluftkanälen fluidisch verbundene Frischluftauslassöffnungen aufweist.An embodiment is preferred in which the flange component is a cylinder head which is attached to the engine block and contains fresh air ducts leading to the cylinders. In addition, the add-on part can be a suction module which is attached to the cylinder head and which has a fresh air inlet opening and a plurality of fresh air outlet openings fluidly connected to the fresh air channels.

Ein erfindungsgemäßes Saugmodul, das für eine Brennkraftmaschine der vorstehend beschriebenen Art geeignet ist, weist an einer zum Anbauen des Saugmoduls an den Zylinderkopf vorgesehenen Anbauseite mehrere fest daran angeordnete erste Ausrichtelemente auf. Zusätzlich oder alternativ kann das Saugmodul ein Modulgehäuse aufweisen, an dem an einer zum Anbauen des Saugmoduls an den Zylinderkopf vorgesehenen Anbauseite mehrere erste Ausrichtelemente integral ausgeformt sind. Bei den am Saugmodul bzw. am Modulgehäuse vorgesehenen ersten Ausrichtelementen kann es sich wie vorstehend erläutert vorzugsweise um Ausrichtstifte und/oder Ausrichtöffnungen handeln.A suction module according to the invention, which is suitable for an internal combustion engine of the type described above, has a plurality of first alignment elements fixedly arranged thereon on an attachment side provided for mounting the suction module on the cylinder head. Additionally or alternatively, the suction module can have a module housing on which a plurality of first alignment elements are integrally formed on an attachment side provided for mounting the suction module on the cylinder head. As explained above, the first alignment elements provided on the suction module or on the module housing can preferably be alignment pins and / or alignment openings.

Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen, wobei in den Zeichnungen das Anbauteil exemplarisch als Saugmodul ausgestaltet ist, während das Flanschbauteil exemplarisch als Zylinderkopf ausgestaltet ist.Further important features and advantages of the invention emerge from the subclaims, from the drawings and from the associated description of the figures on the basis of the drawings, the attachment part being exemplary in the drawings is designed as a suction module, while the flange component is exemplarily designed as a cylinder head.

Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the combination indicated in each case, but also in other combinations or on their own without departing from the scope of the present invention.

Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Komponenten beziehen.Preferred exemplary embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description, the same reference numerals referring to the same or similar or functionally identical components.

Es zeigen, jeweils schematisch,

Fig. 1
eine stark vereinfachte, schaltplanartige Prinzipdarstellung einer Brennkraftmaschine,
Fig. 2
eine Seitenansicht eines Saugmoduls,
Fig. 3
eine Ansicht von unten des Saugmoduls,
Fig. 4
eine vereinfachte Schnittansicht der Brennkraftmaschine im Bereich einer Ausrichteinrichtung analog zu einer in Fig. 3 angedeuteten, abgewinkelten Schnittlinie IV-IV,
Fig. 5
eine stark vereinfachte Prinzipdarstellung der Ausrichteinrichtung,
Fig. 6
eine Ansicht wie in Fig. 5, jedoch bei einer anderen Ausführungsform.
Each shows schematically
Fig. 1
a highly simplified, circuit diagram-like basic illustration of an internal combustion engine,
Fig. 2
a side view of a suction module,
Fig. 3
a bottom view of the suction module,
Fig. 4
a simplified sectional view of the internal combustion engine in the area of an alignment device analogous to one in Fig. 3 indicated, angled section line IV-IV,
Fig. 5
a greatly simplified basic illustration of the alignment device,
Fig. 6
a view like in Fig. 5 , but in another embodiment.

Entsprechend Fig. 1 umfasst eine Brennkraftmaschine 1 zumindest einen Motorblock 2, in dem mehrere Zylinder 3 angeordnet sind, von denen in Fig. 1 jedoch nur einer durch eine unterbrochene Linie angedeutet ist. In Fig. 1 schließt sich unterhalb des Motorblocks 2 ein Kurbelgehäuse 4 an, an dessen Unterseite eine Ölwanne 5 angeordnet ist. Oben an den Motorblock 2 schließt ein Zylinderkopf 6 an, der zu den Zylindern 3 führende Frischluftkanäle 7 enthält, von denen in Fig. 1 nur einer erkennbar und mit unterbrochener Linie angedeutet ist. Ferner enthält der Zylinderkopf 6 für die Zylinder 3 Abgaskanäle 8, von denen in Fig. 1 ebenfalls nur einer erkennbar und mit unterbrochener Linie angedeutet ist. Weitere üblicherweise bei einer Brennkraftmaschine 1 vorhandene Komponenten, wie Kurbelwelle, Kolben, Pleuel, Gaswechselventile sowie Ventilsteuerung und Einspritzeinrichtung, sind zur Wahrung der Übersichtlichkeit nicht dargestellt. Ferner ist im Beispiel der Fig. 1 die Brennkraftmaschine 1 als Reihenmotor ausgestaltet, die nur einen Motorblock 2 und nur einen Zylinderkopf 6 aufweist. Grundsätzlich sind auch Bauformen denkbar, bei denen zumindest zwei Motorblöcke 2 und/oder wenigsten zwei Zylinderköpfe 6 vorhanden sind. Beispielsweise können bei einer als V-Motor ausgestalteten Brennkraftmaschine 1 zwei Zylinderköpfe 6 vorgesehen sein, und bei einer als Boxermotor ausgestalteten Brennkraftmaschine 1 können außerdem zwei Motorblöcke 2 vorgesehen sein. Der Zylinderkopf 6 repräsentiert ein Flanschbauteil des Motorblocks 2.Corresponding Fig. 1 An internal combustion engine 1 comprises at least one engine block 2, in which a plurality of cylinders 3 are arranged, of which in Fig. 1 however, only one is indicated by a broken line. In Fig. 1 connects below the engine block 2 to a crankcase 4, on the underside of which an oil pan 5 is arranged. At the top of the engine block 2 there is a cylinder head 6, which contains fresh air ducts 7 leading to the cylinders 3, of which in Fig. 1 only one is recognizable and indicated by a broken line. Furthermore, the cylinder head 6 contains 3 exhaust gas channels 8 for the cylinders, of which in Fig. 1 likewise only one is recognizable and indicated with a broken line. Other components usually present in an internal combustion engine 1, such as crankshaft, pistons, connecting rods, gas exchange valves and valve control and injection device, are not shown in order to maintain clarity. Furthermore, in the example Fig. 1 the internal combustion engine 1 is designed as an in-line engine which has only one engine block 2 and only one cylinder head 6. In principle, designs are also conceivable in which at least two engine blocks 2 and / or at least two cylinder heads 6 are present. For example, two cylinder heads 6 can be provided in an internal combustion engine 1 designed as a V-type engine, and two engine blocks 2 can also be provided in an internal combustion engine 1 designed as a boxer engine. The cylinder head 6 represents a flange component of the engine block 2.

Die Brennkraftmaschine 1 weist außerdem zumindest ein Saugmodul 9 auf, das auf geeignete Weise am Zylinderkopf 6 befestigt ist und das eine Frischlufteinlassöffnung 10 sowie mehrere mit den Frischluftkanälen 7 fluidisch verbundene Frischluftauslassöffnungen 11 aufweist. Das Saugmodul 9 bildet dabei einen Bestandteil einer Frischluftanlage 12, die zur Versorgung der Zylinder 3 mit Frischluft dient. Das Saugmodul 9 dient als Frischluftverteiler, der die Frischluft auf die einzelnen Zylinder 3 verteilt. Das Saugmodul 9 repräsentiert ein Anbauteil, das an den als Flanschbauteil dienenden Zylinderkopf 6 angebaut ist.The internal combustion engine 1 also has at least one suction module 9 which is fastened in a suitable manner to the cylinder head 6 and which has a fresh air inlet opening 10 and a plurality of fresh air outlet openings 11 fluidly connected to the fresh air channels 7. The suction module 9 forms part of a fresh air system 12 which supplies the cylinders 3 with fresh air serves. The suction module 9 serves as a fresh air distributor, which distributes the fresh air to the individual cylinders 3. The suction module 9 represents an attachment that is attached to the cylinder head 6 serving as a flange component.

Des Weiteren ist die Brennkraftmaschine 1 mit einer Abgasanlage 13 ausgestattet, die einen Abgaskrümmer 14 aufweist. Der Abgaskrümmer 14 ist am Zylinderkopf 8 befestigt und besitzt mehrere Abgaseinlassöffnungen 15, die mit den Abgaskanälen 8 fluidisch verbunden sind, sowie eine Abgasauslassöffnung 16. Im gezeigten Beispiel ist die Brennkraftmaschine 1 als aufgeladene Brennkraftmaschine 1 konzipiert und hierzu mit einer Ladeeinrichtung versehen, die hier als Abgasturbolader 17 konzipiert ist. Der Abgasturbolader 17 besitzt eine Turbine 18, die in die Abgasanlage 13 eingebunden ist, sowie einen Verdichter 19, der in die Frischluftanlage 12 eingebunden ist. Im Betrieb der Brennkraftmaschine 1 treibt die Turbine 18 in üblicher Weise den Verdichter 19 an.Furthermore, the internal combustion engine 1 is equipped with an exhaust system 13, which has an exhaust manifold 14. The exhaust manifold 14 is fastened to the cylinder head 8 and has a plurality of exhaust gas inlet openings 15, which are fluidly connected to the exhaust gas channels 8, and an exhaust gas outlet opening 16. In the example shown, the internal combustion engine 1 is designed as a supercharged internal combustion engine 1 and is provided with a charging device, which here as Exhaust gas turbocharger 17 is designed. The exhaust gas turbocharger 17 has a turbine 18, which is integrated in the exhaust system 13, and a compressor 19, which is integrated in the fresh air system 12. During operation of the internal combustion engine 1, the turbine 18 drives the compressor 19 in the usual way.

Bei der hier vorgestellten Brennkraftmaschine 1 ist zwischen dem Saugmodul 9 und dem Zylinderkopf 6 eine Ausrichteinrichtung 20 vorgesehen, die in Fig. 1 mit unterbrochener Linie angedeutet ist. Sie dient zum Ausrichten des Saugmoduls 9 relativ zum Zylinderkopf 6 beim Anbauen des Saugmoduls 9 an den Zylinderkopf 6. Diese Ausrichteinrichtung 20 ist dabei zusätzlich zu hier nicht näher gezeigten Befestigungsmitteln vorgesehen, die zum Befestigen des Saugmoduls 9 am Zylinderkopf 6 dienen. Von diesen Befestigungsmitteln sind in der Ansicht der Fig. 3 Durchgangsöffnungen 21 erkennbar, die am Saugmodul 9 ausgebildet sind und durch die hier nicht gezeigte Befestigungsschrauben hindurchgeführt sind, um das Saugmodul 9 mit dem Zylinderkopf 6 zu verschrauben.In the internal combustion engine 1 presented here, an alignment device 20 is provided between the suction module 9 and the cylinder head 6 Fig. 1 is indicated with a broken line. It is used to align the suction module 9 relative to the cylinder head 6 when attaching the suction module 9 to the cylinder head 6. This aligning device 20 is provided in addition to fastening means, not shown here, which are used to fasten the suction module 9 to the cylinder head 6. Of these fasteners are in the view of the Fig. 3 Through openings 21 can be seen, which are formed on the suction module 9 and are passed through the fastening screws, not shown here, in order to screw the suction module 9 to the cylinder head 6.

Die Ausrichteinrichtung 20 weist gemäß den Fig. 2 bis 6 zumindest drei separate Ausrichteinheiten 22 auf, die voneinander beabstandet angeordnet sind. Gemäß den Fig. 5 und 6, die eine Schematisierung der Ausrichteinrichtung 20 repräsentieren, sind zwei derartige Ausrichteinheiten 22 so konzipiert, dass sie eine Ausrichtung des Saugmoduls 9 gegenüber dem Zylinderkopf 6 bezüglich einer ersten Ausrichtrichtung 23 bewirken, die in den Fig. 5 und 6 vertikal verläuft. Die erste Ausrichtrichtung 23 ist außerdem senkrecht zu einer Anbaurichtung 24 orientiert, die in den Fig. 1, 2 und 4 durch einen vertikalen Pfeil angedeutet ist und in der das Saugmodul 9 an den Zylinderkopf 6 angebaut ist. Diese beiden Ausrichteinheiten 22 sind in den Fig. 2, 3, 5 und 6 links bzw. rechts angeordnet und können im Folgenden auch als erste oder linke bzw. als zweite oder rechte Ausrichteinheit 22 bezeichnet werden.The alignment device 20 points according to the 2 to 6 at least three separate alignment units 22, which are arranged spaced apart. According to the 5 and 6 which represent a schematic of the alignment device 20, are two such alignment units 22 designed so that they bring about an alignment of the suction module 9 with respect to the cylinder head 6 with respect to a first alignment direction 23, which in the 5 and 6 runs vertically. The first alignment direction 23 is also oriented perpendicular to a mounting direction 24, which in the 1, 2 and 4th is indicated by a vertical arrow and in which the suction module 9 is attached to the cylinder head 6. These two alignment units 22 are in the Fig. 2 , 3rd , 5 and 6 arranged on the left or right and can also be referred to below as first or left or as second or right alignment unit 22.

Die verbleibende andere Ausrichteinheit 22 ist dagegen so konzipiert, dass sie eine Ausrichtung des Saugmoduls 9 relativ zum Zylinderkopf 6 bezüglich einer zweiten Ausrichtrichtung 25 bewirkt, die ebenfalls senkrecht zur Anbaurichtung 24 und außerdem geneigt zur ersten Ausrichtrichtung 23 orientiert ist. Im Beispiel ist diese zweite Ausrichtrichtung 25 im Wesentlichen senkrecht zur ersten Ausrichtrichtung 23 orientiert und verläuft dementsprechend in den Fig. 5 und 6 horizontal. Die erste Ausrichtrichtung 23 und die zweite Ausrichtrichtung 25 definieren eine Ausrichtebene 26, die in Fig. 4 angedeutet ist und die im Wesentlichen senkrecht zur Anbaurichtung 24 verläuft. Diese andere Ausrichteinheit 22 ist in den Fig. 2, 3, 5 und 6 mittig angeordnet und kann im Folgenden auch als dritte oder mittlere Ausrichteinheit 22 bezeichnet werden.The remaining other alignment unit 22, on the other hand, is designed such that it brings about an alignment of the suction module 9 relative to the cylinder head 6 with respect to a second alignment direction 25, which is also oriented perpendicular to the mounting direction 24 and also inclined to the first alignment direction 23. In the example, this second alignment direction 25 is oriented essentially perpendicular to the first alignment direction 23 and accordingly runs in the FIGS 5 and 6 horizontal. The first alignment direction 23 and the second alignment direction 25 define an alignment plane 26 which is shown in FIG Fig. 4 is indicated and which runs essentially perpendicular to the mounting direction 24. This other alignment unit 22 is shown in FIGS Fig. 2 , 3rd , 5 and 6 arranged in the center and can also be referred to below as the third or middle alignment unit 22.

Bei den hier gezeigten, bevorzugten Beispielen sind genau drei derartige Ausrichteinheiten 22 vorgesehen, die alle entweder eine Ausrichtung in der ersten Ausrichtrichtung 23 oder in der zweiten Ausrichtrichtung 25 bewirken. Bevorzugt ist die hier gezeigte Variante, bei der zwei Ausrichteinheiten 22, nämlich die erste und zweite Ausrichteinheit 22 jeweils eine Ausrichtung in der ersten Ausrichtrichtung 23 bewirken, während nur eine Ausrichteinheit 22, nämlich die dritte Ausrichteinheit 22 eine Ausrichtung in der zweiten Ausrichtrichtung 25 bewirkt. Die beiden der ersten Ausrichtrichtung 23 zugeordneten erste und zweite Ausrichteinheit 22 sind dabei in der zweiten Ausrichtrichtung 25 voneinander beabstandet angeordnet. Ferner ist die der zweiten Ausrichtrichtung 25 zugeordnete dritte oder mittlere Ausrichteinheit 22 bezüglich der zweiten Ausrichtrichtung 25 zwischen den beiden der ersten Ausrichtrichtung 23 zugeordneten linken und rechten Ausrichteinheit 22 angeordnet. Außerdem ist die der zweiten Ausrichtrichtung 25 zugeordnete dritte Ausrichteinheit 22 in der ersten Ausrichtrichtung 23 zu den beiden der ersten Ausrichtrichtung 23 zugeordneten ersten und zweiten Ausrichteinheit 22 versetzt angeordnet. Des Weiteren ist hier vorgesehen, dass die der zweiten Ausrichtrichtung 25 zugeordnete dritte Ausrichteinheit 22 bezüglich einer Längsrichtung 27 des Saugmoduls 9 mittig zwischen den beiden der ersten Ausrichtrichtung 23 zugeordneten ersten und zweiten Ausrichteinheit 22 angeordnet ist. Die Längsrichtung 27 des Saugmoduls 9 ist in den Fig. 2, 3, 5 und 6 jeweils durch einen Doppelpfeil angedeutet und erstreckt sich parallel zu einer Richtung, in der die einzelnen Zylinder 3 des Motorblocks 2 nebeneinander im Motorblock 2 angeordnet sind. Diese Längsrichtung 27 verläuft in Fig. 1 senkrecht zur Zeichnungsebene. Die zweite Ausrichtrichtung 25 verläuft dabei parallel zur Längsrichtung 27 des Saugmoduls 9.In the preferred examples shown here, exactly three such alignment units 22 are provided, all of which bring about either alignment in the first alignment direction 23 or in the second alignment direction 25. The variant shown here is preferred, in which two alignment units 22, namely the first and second alignment unit 22, each bring about an alignment in the first alignment direction 23, while only one alignment unit 22, namely the third alignment device 22, effects an alignment in the second alignment direction 25. The Both the first and second alignment units 22 assigned to the first alignment direction 23 are arranged spaced apart from one another in the second alignment direction 25. Furthermore, the third or middle alignment unit 22 assigned to the second alignment direction 25 is arranged with respect to the second alignment direction 25 between the two left and right alignment units 22 assigned to the first alignment direction 23. In addition, the third alignment unit 22 assigned to the second alignment direction 25 is arranged offset in the first alignment direction 23 to the two first and second alignment units 22 assigned to the first alignment direction 23. Furthermore, it is provided here that the third alignment unit 22 assigned to the second alignment direction 25 is arranged centrally with respect to a longitudinal direction 27 of the suction module 9 between the two first and second alignment units 22 assigned to the first alignment direction 23. The longitudinal direction 27 of the suction module 9 is in the Fig. 2 , 3rd , 5 and 6 each indicated by a double arrow and extends parallel to a direction in which the individual cylinders 3 of the engine block 2 are arranged side by side in the engine block 2. This longitudinal direction 27 runs in Fig. 1 perpendicular to the plane of the drawing. The second alignment direction 25 runs parallel to the longitudinal direction 27 of the suction module 9.

Die einzelnen Ausrichteinheiten 22 weisen jeweils ein am Saugmodul 9 fest angeordnetes erstes Ausrichtelement 28 und ein am Zylinderkopf 6 fest angeordnetes zweites Ausrichtelement 29 auf. Das eine der beiden Ausrichtelemente 28, 29 ist bei den hier gezeigten Beispielen als Ausrichtstift 30 ausgestaltet, während das jeweils andere Ausrichtelement 28, 29 hier als Ausrichtöffnung 31 ausgestaltet ist, in die der zugehörige Ausrichtstift 30 zum Ausrichten des Saugmoduls 9 zum Zylinderkopf 6 eingreift. Bei den hier gezeigten bevorzugten Ausführungsformen ist jeweils das am Saugmodul 9 ausgebildete erste Ausrichtelement 28 durch einen solchen Ausrichtstift 30 gebildet, während das am Zylinderkopf 6 ausgebildete zweite Ausrichtelement 29 jeweils durch eine solche Ausrichtöffnung 31 gebildet ist.The individual alignment units 22 each have a first alignment element 28 fixedly arranged on the suction module 9 and a second alignment element 29 permanently arranged on the cylinder head 6. In the examples shown here, one of the two alignment elements 28, 29 is designed as an alignment pin 30, while the other alignment element 28, 29 is designed here as an alignment opening 31, into which the associated alignment pin 30 engages to align the suction module 9 with the cylinder head 6. In the preferred embodiments shown here, the first alignment element 28 formed on the suction module 9 is formed by such an alignment pin 30, while that on the cylinder head 6 formed second alignment element 29 is each formed by such an alignment opening 31.

Bei der in Fig. 5 gezeigten Ausführungsform ist die jeweilige Ausrichtöffnung 31 länglich ausgestaltet bzw. durch ein Langloch 32 gebildet. Die Längsrichtung des jeweiligen Langlochs 32 erstreckt sich dabei senkrecht zur Ausrichtrichtung 23, 25, die der jeweiligen Ausrichteinheit 22 zugeordnet ist. Ferner besitzt die längliche Ausrichtöffnung 31 zwischen ihren Längsenden einen Führungsabschnitt 33, der durch zwei einander gegenüberliegende, parallel zueinander verlaufende Wandabschnitte definiert ist. Diese Wandabschnitte erstrecken sich dabei senkrecht zur Ausrichtrichtung 23, 25, die der jeweiligen Ausrichteinheit 22 zugeordnet ist. Somit definiert der Führungsabschnitt 33 die Ausrichtrichtung 23, 25 der jeweiligen Ausrichteinheit 22. Der zugehörige Ausrichtstift 30 ist nun im besagten Führungsabschnitt 33 an den genannten Wandabschnitten geführt, derart, dass der jeweilige Ausrichtstift 30 in der jeweiligen länglichen Ausrichtöffnung 31 bezüglich der Ausrichtrichtung 23, 25, die dieser Ausrichteinheit 22 zugeordnet ist, in der Ausrichtöffnung 31 zentriert wird, während er senkrecht dazu, also in der jeweils anderen Ausrichtrichtung 23, 25, innerhalb der länglichen Ausrichtöffnung 31 beweglich ist. Insbesondere kann der den länglichen Ausrichtöffnungen 31 zugeordnete Ausrichtstift 30 wie im Beispiel der Fig. 5 senkrecht zur Anbaurichtung 24 einen kreisförmigen Querschnitt besitzen.At the in Fig. 5 In the embodiment shown, the respective alignment opening 31 is elongated or formed by an elongated hole 32. The longitudinal direction of the respective elongated hole 32 extends perpendicular to the alignment direction 23, 25, which is assigned to the respective alignment unit 22. Furthermore, the elongated alignment opening 31 has between its longitudinal ends a guide section 33 which is defined by two mutually opposite, parallel wall sections. These wall sections extend perpendicular to the alignment direction 23, 25, which is assigned to the respective alignment unit 22. The guide section 33 thus defines the alignment direction 23, 25 of the respective alignment unit 22. The associated alignment pin 30 is now guided in said guide section 33 on the wall sections mentioned, such that the respective alignment pin 30 is in the respective elongated alignment opening 31 with respect to the alignment direction 23, 25 , which is assigned to this alignment unit 22, is centered in the alignment opening 31, while it is movable perpendicularly to it, that is to say in the respective other alignment direction 23, 25, within the elongated alignment opening 31. In particular, the alignment pin 30 assigned to the elongated alignment openings 31 can be, as in the example of FIG Fig. 5 have a circular cross section perpendicular to the mounting direction 24.

In Fig. 6 wird eine andere Ausführungsform näher erläutert, die auch im Beispiel der Fig. 2 bis 4 realisiert ist. Diese Ausführungsform zeichnet sich durch eine besonders preiswerte Herstellbarkeit aus. Sie charakterisiert sich dadurch, dass die Ausrichtöffnungen 31 senkrecht zur Anbaurichtung 24 jeweils einen kreisförmigen Querschnitt besitzen. Die zugehörigen Ausrichtstifte 30 sind so ausgestaltet, dass sie senkrecht zur Ausrichtrichtung 23, 25, die der jeweiligen Ausrichteinheit 22 zugeordnet ist, eine kleinere Biegesteifigkeit aufweisen als parallel zu dieser Ausrichtrichtung 23, 25, die der jeweiligen Ausrichteinheit 22 zugeordnet ist. Beispielsweise ist bei der in Fig. 6 links gezeigten ersten Ausrichteinheit 22 die erste Ausrichtrichtung 23 vorgesehen. Der zugehörige Ausrichtstift 30 ist dann in der zweiten Ausrichtrichtung 25 mit einer kleineren Biegesteifigkeit ausgestattet als in der ersten Ausrichtrichtung 23. Entsprechendes gilt auch für die in Fig. 6 rechts gezeigte zweite Ausrichteinheit 22. Umgekehrte Verhältnisse ergeben sich jedoch bei der in Fig. 6 mittig dargestellten dritten Ausrichteinheit 22.In Fig. 6 Another embodiment is explained in more detail, which also in the example of 2 to 4 is realized. This embodiment is characterized by a particularly inexpensive producibility. It is characterized in that the alignment openings 31 each have a circular cross section perpendicular to the mounting direction 24. The associated alignment pins 30 are designed such that they have a lower bending stiffness perpendicular to the alignment direction 23, 25, which is assigned to the respective alignment unit 22, than parallel to this alignment direction 23, 25, which is assigned to the respective alignment unit 22. For example, in Fig. 6 The first alignment unit 22 shown on the left provides the first alignment direction 23. The associated alignment pin 30 is then provided with a smaller bending stiffness in the second alignment direction 25 than in the first alignment direction 23. The same also applies to the in FIG Fig. 6 second alignment unit 22 shown on the right. However, the reverse situation arises with the in Fig. 6 third alignment unit 22 shown in the center.

Richtungsabhängige Biegesteifigkeiten werden hierbei dadurch erreicht, dass der zugehörige Ausrichtstift 30 senkrecht zur Anbaurichtung 24 einen Stiftquerschnitt besitzt, der parallel zur Ausrichtrichtung 23, 25, die der zugehörigen Ausrichteinheit 22 zugeordnet ist, eine Stiftbreite 34 aufweist, die größer ist als eine Stiftdicke 35, die parallel zur jeweils anderen Ausrichtrichtung 23, 25 verläuft. Konkret ist bei dem in Fig. 6 gezeigten Beispiel bei der links gezeigten ersten Ausrichteinheit 22 die Stiftbreite 34 parallel zur ersten Ausrichtrichtung 23 orientiert und deutlich größer dimensioniert als die zugehörige Stiftdicke 35, die parallel zur zweiten Ausrichtrichtung 25 orientiert ist. Entsprechendes gilt dann auch für die in Fig. 6 rechts dargestellte zweite Ausrichteinheit 22. Dagegen sind bei der in Fig. 6 mittig gezeigten dritten Ausrichteinheit 22 die Orientierungen von Stiftbreite 34 und Stiftdicke 35 umgekehrt.Direction-dependent bending stiffness is achieved in that the associated alignment pin 30 has a pin cross section perpendicular to the mounting direction 24, which has a pin width 34 parallel to the alignment direction 23, 25, which is assigned to the associated alignment unit 22, which is larger than a pin thickness 35, which runs parallel to the respective other alignment direction 23, 25. Specifically, the in Fig. 6 In the example shown in the first alignment unit 22 shown on the left, the pin width 34 is oriented parallel to the first alignment direction 23 and is dimensioned significantly larger than the associated pin thickness 35, which is oriented parallel to the second alignment direction 25. The same applies to the in Fig. 6 second alignment unit 22 shown on the right Fig. 6 the third alignment unit 22 shown in the center reverses the orientations of the pin width 34 and pin thickness 35.

Im bevorzugten Beispiel ist der jeweilige Stiftquerschnitt flach, derart, dass der Stiftquerschnitt entlang der Stiftbreite 34 zwischen nicht näher bezeichneten Endabschnitten, die in der Stiftbreitenrichtung voneinander beabstandet sind, einen Abschnitt 36 aufweist, in dem die Stiftdicke 35 konstant ist.In the preferred example, the respective pin cross-section is flat, such that the pin cross-section along the pin width 34 has a section 36 between the end sections, which are not specified in more detail and which are spaced apart in the pin width direction, in which the pin thickness 35 is constant.

Zweckmäßig liegen z.B. gemäß Fig. 4 dabei alle Ausrichteinheiten 22 in der vorgenannten Ausrichtebene 26, in der im zusammengebauten Zustand eine dem Zylinderkopf 6 zugewandte Anbauseite 38 des Saugmoduls 9 an einer dem Saugmodul 9 zugewandten Anschlussseite 39 des Zylinderkopfs 6 anliegt.Appropriately, for example, according to Fig. 4 all alignment units 22 in the aforementioned alignment plane 26, in the one of which in the assembled state Cylinder head 6 facing mounting side 38 of the suction module 9 bears against a connection side 39 of the cylinder head 6 facing the suction module 9.

Das Saugmodul 9 besitzt zweckmäßig ein Modulgehäuse 37, an dem die Lufteinlassöffnung 10 und die Luftauslassöffnungen 11 ausgebildet sind. Auch befindet sich die Anbauseite 38 an diesem Modulgehäuse 37. Ferner sind auch die Durchgangsöffnungen 21 der nicht näher gezeigten Befestigungsmittel am Modulgehäuse 37 ausgebildet.The suction module 9 expediently has a module housing 37 on which the air inlet opening 10 and the air outlet openings 11 are formed. The mounting side 38 is also located on this module housing 37. Furthermore, the through openings 21 of the fastening means (not shown in more detail) are also formed on the module housing 37.

Claims (15)

  1. An internal combustion engine
    - with at least one engine block (2), which contains a plurality of cylinders (3) and has at least one flange component (6),
    - with at least one attachment part (9) which is fastened to the flange component (6),
    - wherein an alignment device (20) is provided to align the attachment part (9) relative to the flange component (6) when attaching the attachment part (9) to the flange component (6),
    - wherein the alignment device (20) has at least three separate alignment units (22), spaced apart from one another,
    - wherein at least one such alignment unit (22) brings about an aligning of the attachment part (9) to the cylinder head (6) with regard to a first aligning direction (23), which is oriented perpendicularly to an attaching direction (24), in which the attachment part (9) is attached to the cylinder head (6),
    characterized in
    - that at least one other such alignment unit (22) brings about an aligning of the attachment part (9) to the cylinder head (6) with respect to a second aligning direction (25), which is oriented perpendicularly to the attaching direction (24) and inclined to the first aligning direction (23),
    - that each alignment unit (22) brings about an aligning of the attachment part (9) to the cylinder head (6) exclusively either in the first aligning direction (23) or in the second aligning direction (25) .
  2. The internal combustion engine according to Claim 1,
    characterized in
    that the first aligning direction (23) is oriented substantially perpendicularly to the second aligning direction (25) .
  3. The internal combustion engine according to Claim 1 or 2,
    characterized in
    - that precisely three alignment units (22) are provided,
    - that two of these three alignment units (22) bring about an aligning in the one aligning direction (23, 25),
    - that one of these three alignment units (22) brings about an aligning in the other aligning direction (23, 25) .
  4. The internal combustion engine according to Claim 3,
    characterized in
    - that the two alignment units (22) associated with the one aligning direction (23, 25) are spaced apart from one another in the other aligning direction (23, 25),
    - that the one alignment unit (22) associated with the other aligning direction (23, 25) is arranged with respect to this aligning direction (23, 25) between the two alignment units (22) associated with the one aligning direction (23, 25),
    - that the one alignment unit (22) associated with the other aligning direction (23, 25) is arranged in the one aligning direction (23, 25) offset to the two alignment units (22) associated with the one aligning direction (23, 25).
  5. The internal combustion engine according to one of Claims 1 to 4,
    characterized in
    that the alignment units (22) have respectively a first alignment element (28) securely arranged on the attachment part (9), and a second alignment element (29) securely arranged on the cylinder head (6), which interact for aligning in the respective aligning direction (23, 25).
  6. The internal combustion engine according to Claim 5,
    characterized in
    - that at least with one such an alignment unit (22) the first alignment element (28) is formed by an alignment pin (30) projecting from the attachment part (9) in the attaching direction (24), whereas the associated second alignment element (29) is formed by an aligning opening (31) formed in the cylinder head (6), into which aligning opening the alignment pin (30) engages for aligning the attachment part (9) to the cylinder head (6).
  7. The internal combustion engine according to Claim 5 or 6,
    characterized in
    - that at least with one such alignment unit (22) the second alignment element (29) is formed by an alignment pin (30) projecting from the cylinder head (6) in the attaching direction (24), whereas the associated first alignment element (28) is formed by an aligning opening (31) formed in the attachment part (9), into which the alignment pin (30) engages for aligning the attachment part (9) to the cylinder head (6).
  8. The internal combustion engine according to Claim 6 or 7,
    characterized in
    that at least one such aligning opening (31) is configured as an elongated hole (32), the longitudinal direction of which runs perpendicularly to the respective aligning direction (23, 25) of the associated alignment unit (22).
  9. The internal combustion engine according to one of Claims 6 to 8,
    characterized in
    that at least one such aligning opening (31) is configured so as to be elongate and between its longitudinal ends has a guide portion (33), which has two wall portions lying opposite one another, which extend parallel to one another and perpendicularly to the respective aligning direction (23, 25) of the associated alignment unit (22).
  10. The internal combustion engine according to one of Claims 6 to 9,
    characterized in
    - that at least one such aligning opening (31) has a circular cross-section perpendicularly to the attaching direction (24),
    - that the associated alignment pin (30) has perpendicularly to the attaching direction (24) a pin cross-section which parallel to the aligning direction (23, 25) of the associated alignment unit (22) has a pin width (34) which is greater than a pin thickness (35) running parallel to the respectively other aligning direction (23, 25),
    - wherein in particular can be provided that the pin cross-section is flat and has a portion (36) with constant pin thickness (35) along the pin width (34) between end portions which are spaced apart from one another in a pin width direction.
  11. The internal combustion engine according to one of Claims 6 to 10,
    characterized in
    - that at least one such aligning opening (31) has a circular cross-section perpendicularly to the attaching direction (24),
    - that the respective alignment pin (30) perpendicularly to the respective aligning direction (23, 25) of the associated alignment unit (22) has a smaller bending stiffness than parallel to this aligning direction (23, 25).
  12. The internal combustion engine according to one of Claims 1 to 11,
    characterized in
    that all the alignment units (22) lie in an aligning plane (26), in which the attachment part (9) lies against the cylinder head (6).
  13. The internal combustion engine according to one of Claims 1 to 12,
    characterized in
    - that the flange component is a cylinder head (6), which is fastened to the engine block (2) and contains fresh air channels (7) leading to the cylinders (3),
    - that the attachment part is a suction module (9) which is fastened to the cylinder head (6) and which has a fresh air inlet opening (10) and a plurality of fresh air outlet openings (11) fluidically connected to the fresh air channels (7) .
  14. A suction module for an internal combustion engine (1) according to Claims 5 and 13,
    characterized in
    that the suction module (9) has on an attachment side, provided for attaching the suction module (9) to the cylinder head (6), a plurality of first alignment elements (30) arranged securely thereon,
    wherein in particular can be provided that the suction module (9) has a module housing (37) on which, on an attachment side (38) provided for attaching the suction module (9) to the cylinder head (6), a plurality of first alignment elements (28) are integrally formed.
  15. A suction module for an internal combustion engine (1) according to Claims 5 and 13,
    characterized in
    that the suction module (9) has a module housing (37) on which, on an attachment side (38) provided for attaching the suction module (9) to the cylinder head (6), a plurality of first alignment elements (28) are integrally formed,
    wherein in particular can be provided that the suction module (9) has, on an attachment side provided for attaching the suction module (9) to the cylinder head (6), a plurality of first alignment elements (30) arranged securely thereon.
EP16709325.1A 2015-03-13 2016-03-07 Aligning device for engine Active EP3268598B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015204607.9A DE102015204607A1 (en) 2015-03-13 2015-03-13 Internal combustion engine with intake module
PCT/EP2016/054783 WO2016146418A1 (en) 2015-03-13 2016-03-07 Internal combustion engine comprising attachment part

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Publication Number Publication Date
EP3268598A1 EP3268598A1 (en) 2018-01-17
EP3268598B1 true EP3268598B1 (en) 2020-05-20

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US (1) US10280880B2 (en)
EP (1) EP3268598B1 (en)
JP (1) JP6423969B2 (en)
KR (1) KR101896205B1 (en)
CN (1) CN107429640B (en)
BR (1) BR112017017065A2 (en)
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WO (1) WO2016146418A1 (en)

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JP2018505346A (en) 2018-02-22
BR112017017065A2 (en) 2018-04-10
US20180066617A1 (en) 2018-03-08
KR20170126924A (en) 2017-11-20
CN107429640B (en) 2019-10-01
EP3268598A1 (en) 2018-01-17
JP6423969B2 (en) 2018-11-14
KR101896205B1 (en) 2018-09-07
CN107429640A (en) 2017-12-01
WO2016146418A1 (en) 2016-09-22
DE102015204607A1 (en) 2016-10-27
US10280880B2 (en) 2019-05-07

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