EP3166740B1 - Noyau de coulée et procédé de fabrication d'un noyau de coulée - Google Patents

Noyau de coulée et procédé de fabrication d'un noyau de coulée Download PDF

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Publication number
EP3166740B1
EP3166740B1 EP15753438.9A EP15753438A EP3166740B1 EP 3166740 B1 EP3166740 B1 EP 3166740B1 EP 15753438 A EP15753438 A EP 15753438A EP 3166740 B1 EP3166740 B1 EP 3166740B1
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EP
European Patent Office
Prior art keywords
section
foundry core
sections
maximum
casting
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Application number
EP15753438.9A
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German (de)
English (en)
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EP3166740A1 (fr
Inventor
Valentin DIEL
Detlef Kube
Gerald KLAUS
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Nemak SAB de CV
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Nemak SAB de CV
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Publication date
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Priority to PL15753438T priority Critical patent/PL3166740T3/pl
Publication of EP3166740A1 publication Critical patent/EP3166740A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
    • B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/108—Installation of cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/22—Moulds for peculiarly-shaped castings
    • B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0002—Cylinder arrangements
    • F02F7/0007—Crankcases of engines with cylinders in line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F2200/00—Manufacturing

Definitions

  • the invention relates to a method for producing a casting core designed according to the preamble of claim 1, in which the work steps specified in the preamble of claim 1 are carried out.
  • the invention also relates to a casting core produced using this method.
  • Casting cores of the type in question form channels, cavities and other recesses as part of a casting mold in the component to be cast.
  • the channels carrying cooling water, but also the cylindrical-shaped combustion chambers are formed with the aid of casting cores.
  • Engine blocks of modern high-performance engines have to be cooled intensively during operation in order to remove the large amounts of heat that arise due to the high power density. This applies in particular to engine blocks that are made of a light metal material, such as an aluminum alloy.
  • a light metal material such as an aluminum alloy.
  • the compact design leads to a closely adjacent arrangement of the cylinder recesses in a row of cylinders. This results in correspondingly thin cylinder walls. These are exposed to an increased thermal load, in particular in the area of their end sections assigned to the cylinder head. In order to avoid the occurrence of heat-related cracks or other damage, it is necessary to also carry out intensive cooling in the relevant hazardous area.
  • the thickness of the intermediate walls is reduced to such an extent that the cooling channels required therein have a clear width of less than 3 mm in their narrowest section.
  • the clear width of the cooling ducts in the area where the intermediate wall between two cylinder spaces is narrowest is in the range of 1-2 mm.
  • a generic core and a method for its production are from the US 4,693,294 A known.
  • cooling channels are to be introduced into the cylinder wall between two cylinder openings of an internal combustion engine, which in the finished state has a total thickness of at most 9 mm, in particular less than 8.5 mm.
  • the between the channel introduced into the cylinder wall and the adjacent one The remaining wall of the cylinder has a wall thickness of 2.5 mm or less, so that the inside width of the cooling duct introduced into the wall is> 3 mm at its narrowest point.
  • a casting core designed in the manner of a bridge is formed from a zircon sand according to the prior art, the mean grain size of which is 0.15-0.2 mm.
  • casting cores can be produced which have at least the features specified in claim 2.
  • a casting core according to the invention can advantageously be used in a casting mold for the cast-technical production of an engine block for an internal combustion engine by pouring an aluminum melt into the casting mold, the web section of the casting core in the engine block forming a cooling channel arranged between two cylinder spaces of the engine block, the clear width of which is at most 3 mm is.
  • a casting core according to the invention which is provided for forming a cooling channel in an engine block for an internal combustion engine, is accordingly formed entirely from a molding sand, the grains of which are connected to one another by a binder.
  • the casting core now has a support section, two peg sections which protrude from a side surface of the support section and are arranged at a distance from one another, and at least one web section which is held at a distance from the support section from the peg sections and whose minimum thickness, measured as the distance between its side surfaces, is in one area between the pin sections is at most 3 mm.
  • the casting core is formed at least in the region of its web section from a molding sand, the grains of which have an average diameter of at most 0.35 mm.
  • a casting core according to the invention thus consists entirely of molding sand, the grains of which are connected to one another in a manner known per se by means of a suitable binder in such a way that they form a solid body.
  • the support section of the casting core allows the casting core to be gripped, transported and inserted into a casting mold without any problems despite the filigree design of its web section. So he can Casting core according to the invention can also easily be part of a casting mold designed as a core package. In the same way, it can be used in any other casting process, in which filigree channels with minimal dimensions are to be formed in or on the respective casting.
  • the pin sections carried by the carrier section form the inflow and outflow channel in the engine block to be cast, via which the narrow, narrow-dimensioned cooling channel is supplied with coolant, which is represented in each case by the web section carried by the pin sections in the engine block.
  • Its thickness is reduced to a maximum of 3 mm in a critical area, and in practice the minimum thickness in this area is 1-2 mm.
  • the relevant critical area, in which the web section of the casting core according to the invention is narrowest, is assigned to the area of the respective intermediate wall of the engine block to be cast, where the intermediate wall is thinnest and the cylinder spaces separated by the intermediate wall come closest.
  • the casting core is formed from a fine-grained molding sand at least in the area of its web section. Its grain size is selected so that the web section disintegrates finely in the solidified casting after the casting, so that the remaining core fragments either trickle out of the solidified engine block automatically or can be rinsed out.
  • the casting cores can not only be produced in a conventional manner by shooting in a core shooter, but also offer a surface texture in the area of the narrow web section, which produce sufficiently smooth inner surfaces in the cooling channel to be produced without this being necessary complex finishing job required. This applies in particular if the average diameter of the grains of the molding sand is at most 0.27 mm, in particular at most 0.23 mm.
  • casting cores according to the invention can be produced on an industrial scale by using a core shooter to shoot a molding compound, which comprises a molding sand and a binder, into a mold cavity of a core mold and then to harden the binder in order to give the casting core the required dimensional stability, whereby
  • a molding sand whose grains have an average diameter of at most 0.35 mm is used as molding compound at least for the web area of the casting core.
  • the average diameter of the grains is optimally not more than 0.27 mm, in particular at most 0.23 mm.
  • the particular advantage of using croning molding materials results from the fact that the binder covering of the respective molding sand grains has a spherical shape according to the invention.
  • the spherical shape ensures a particularly good behavior of the molding material when shooting cores according to the invention in a conventional core shooting machine. In this way, casting cores according to the invention can be produced with a high level of operational reliability, despite their minimized dimensions.
  • the binder with which the grains of the molding sand used according to the invention for the production of the casting cores are coated is typically a resin which, as a result of the application of heat, bonds and hardens with the resin of the respectively adjacent grains, so that a firm bond is produced.
  • a reliable production by conventional shooting of the cores in a core shooting machine also contributes if, according to one embodiment of the invention, the side surfaces of the casting core according to the invention each transition into the peripheral surface of the pin sections in a jump-free transition and its thickness starting from a maximum thickness assigned to the respective pin section Longitudinal direction of the web section decreases continuously to the minimum thickness.
  • the jump-free connection of the web section to the tenon sections supporting it and the continuous reduction in thickness help to ensure that the molding material, despite the minimized dimensions in the core shooter, also fills the cavity securely and sufficiently tightly, which forms the narrow web section of the casting core.
  • the jump-free connection of the web section to the pin sections can be simplified in that the pin sections have a cross-sectional shape shaped like a cam, the tip of which faces the respective other pin section. In this way, the side surfaces of the web section can easily nestle against the peripheral surface of the pin sections, which in turn supports the filling of the web section with molding sand during core shooting.
  • casting cores can be produced which, in their critical, minimally thick region, not only have a thickness of at most 3 mm, in particular 1-2 mm, and are therefore suitable, Show cooling channels with a clear width of 3 mm and less, in particular 1.5 +/- 0.5 mm, in the cast part to be created, but where the height is also minimized in the critical area.
  • the height of the web section in the region in which it has its minimum thickness can be limited to a maximum of 4.5 mm.
  • the web section of a casting core according to the invention from fine-grained molding sand according to the invention, while the other sections of the casting core consist of a coarser molding sand.
  • the web section could be shot from the fine-grained sand separately from the other sections of the casting core and then connected, for example by gluing, to the remaining sections of the casting core which were shot from coarser sand.
  • the casting core is in each case completely formed in one piece from a molding sand which meets the requirements according to the invention.
  • a casting core according to the invention can also be easily designed so that it depicts more than one narrow pouring channel in the thin intermediate wall of the engine block to be cast.
  • two or more spaced web sections can be carried by the pin sections, each of which has an area in which their minimum thickness is at most 3 mm. It goes without saying that here, too, significantly smaller minimum thicknesses, for example 1-2 mm, are possible for the additional web sections.
  • a casting core according to the invention is particularly suitable for use in a casting mold for the cast-technical production of an engine block for an internal combustion engine by pouring an aluminum melt into the casting mold, the web section of the casting core in the engine block forming a cooling channel arranged between two cylinder spaces of the engine block, the clear width of which is at most Is 3 mm.
  • thin channels can be introduced into the relevant partition in each internal combustion engine block in which a narrow partition is formed between two cylinder openings.
  • this includes the possibility, when casting engine blocks that have more than two cylinder openings, to image at least one thin channel in each of the partition walls between adjacent cylinder openings by means of a casting core according to the invention.
  • the casting core 1 has a carrier section 2, which has the basic shape of a narrow pyramid stub with opposite broad sides 3, 4 and narrow sides 5, 6 also opposite one another, which connect the broad sides 3, 4 together. Adjacent to the upper end face 7, laterally protruding holding sections 8, 9 are formed on the broad sides 3, 4 and extend approximately over a fifth of the height of the support section 2.
  • pin sections 11, 12 are additionally formed on the carrier section 2 and extend axially parallel to one another and project from the end face 10 in a vertically aligned manner.
  • the pin sections 11, 12 have a cam-like cross-sectional shape, the cam tip 13, 14 of which points in the direction of the respective other pin section 12, 11.
  • Two web sections 15, 16 extend at a distance from one another in the longitudinal direction of the pin sections 11, 12 and between the pin sections 11, 12 and to the end face 10 of the carrier section.
  • the longitudinal axes L1, L2 of the web sections 15, 16 are parallel to one another and aligned with the end face 10 of the carrier section 2.
  • the ends of the web sections 15, 16 merge into the respectively assigned pin section 11, 12.
  • the side surfaces 17, 18 of the web sections 15, 16 are nestled against the peripheral surface 19, 20 of the respective pin section 11, 12. They run tangentially and without jump into the peripheral surface section 21, 22 of the pin sections 11, 12, which extends between the cam tip 13, 14 and the thickest point of the cross section of the pin sections 11, 12.
  • the thickness d of the web sections 15, 16 measured as the distance between their side surfaces 17, 18 corresponds to a maximum thickness dmax of approximately 5 mm, in in practice the thickness dmax can also be larger. Starting from this maximum thickness dmax, the thickness d of the web sections 15, 16 decreases continuously in the direction of the respective other pin section 11, 12 until it reaches its minimum thickness dmin in a central region 23, 24 of the web sections 15, 16 arranged centrally between the pin sections 11, 12 of about 1.5 mm.
  • the height h of the web sections 15, 16 measured as the distance between the top and bottom of the web sections 15, 16 continuously decreases from a maximum height hmax given at the respective connection point in the direction of the central region 23, 24 until a minimum height hmin there 4.3 mm.
  • the casting core 1 was shot in one piece in a conventional core shooting machine, not shown here, from a commercially available so-called "croning molding sand", the quartz sand grains of which had an average grain diameter of 0.21 +/- 0.02 mm (corresponding to AFS grain size number 68 + / - 3 and were coated with a synthetic resin serving as a binder
  • the molding sand was shot at a pressure of 2 - 6 bar into a core box heated to 200 - 350 ° C, in which the binder resin of the quartz sand grains as a result of the over After a required dwell time of 30-120 s, the casting core 1 could be removed from the core box.
  • Casting cores 1 designed and produced in the manner explained above are part of an in Fig. 4 only partially shown, otherwise used conventionally designed as a core package 25 mold for casting a in Fig. 5 engine blocks 26, also shown only in sections and cast from a molten aluminum alloy, are used for an internal combustion engine with cylinder spaces 27, 28, 29 arranged in series.
  • the casting cores 1 are arranged by means of cover cores 30, 31, 32 between the cylinder cores 33, 34, 35 that represent the cylinder spaces 27-29 in such a way that their web sections are centered in the upper area of the area between the cylinder cores 33-35 that is assigned to the cover cores 30-32 existing narrow free space 36,37 is arranged.
  • the respective free space 36, 37 each represents the intermediate cylinder wall 38, 39, by which the respectively adjacent cylinder spaces 27, 28, 28, 29 are separated from one another.
  • the minimum thickness dmin of the respective intermediate cylinder wall 38, 39 is approximately 5 mm.
  • the cast aluminum material solidifies.
  • the binder which holds the sand grains of the casting core 1 together, begins to disintegrate.
  • the thermal energy entered in this way is usually only sufficient to start the decay process. If the fragments of the casting core 1 thus obtained are still too large to move out of the channels represented by the casting core 1 trickle, the core material is then further crushed in a known manner by targeted treatment.
  • a suitable heat treatment also known in technical terms under the keyword “thermal desanding”
  • thermal desanding can be carried out, in which the disintegration of the binder continues by means of targeted supply of heat and the associated connection between the individual molding granules is dissolved until the molding material is free-flowing .
  • the comminution of the casting core can also be supported mechanically by exposing the casting mold or the casting itself to hammer blows, knocking, shaking or vibrating.
  • the respective channel can additionally be flushed through with water or another liquid.
  • the pin sections 11, 12 of the respective casting core 1 can be coupled to a water jacket core (not shown here), which forms a cooling channel in the engine block 26, via which the walls of the engine block 26 bordering the outside of the cylinder spaces 27-29 are cooled.
  • a water jacket core (not shown here)
  • cooling water flows through it the pin sections 11, 12 shown inlet and outlet channels 41, 42 through the narrow cooling channels 43, 44 shown in the area 40 by means of the web sections 15, 16, only about 1.5 mm wide and about 4.2 mm high, in the intermediate walls of the cylinders 38.39 and ensures effective cooling in the region of the cylinder partition 38.39 which is subject to high thermal loads.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Mold Materials And Core Materials (AREA)

Claims (11)

  1. Procédé de fabrication d'un noyau de coulée (1) qui est prévu pour reproduire un conduit de refroidissement (41, 42, 43, 44) dans un bloc moteur (26) d'un moteur à combustion interne et qui présente un segment de support (2), deux segments de tenons (11, 12) qui dépassent d'une face latérale (10) du segment de support (2) et sont disposés à distance l'un de l'autre, et au moins un segment de traverse (15, 16) maintenu à distance du segment de support (2) par les segments de tenons (11, 12) et dont l'épaisseur minimale (dmin) mesurée comme distance de ses faces latérales (17, 18) l'une par rapport à l'autre est au maximum de 3 mm dans une zone (23, 24) située entre les segments de tenons (11, 12), lors du procédé à l'aide d'une machine à tirer les noyaux un matériau de moulage, qui comporte un sable de fonderie et un liant, est injecté dans une cavité de moulage d'une forme de noyau et par la suite le liant est durci afin de donner au noyau de coulée (1) la stabilité de forme nécessaire, et au moins le matériau de moulage utilisé pour le segment de traverse (15, 16) du noyau de coulée (1) comportant un sable de fonderie, dont les grains comportent un diamètre moyen au maximum de 0,35 mm, et sont enrobés avec le liant et ont ainsi, avec leur enrobage à base de liant, une forme sphérique.
  2. Noyau de coulée, fabriqué en utilisant le procédé selon la revendication 1, qui est prévu pour reproduire un conduit de refroidissement (41, 42, 43, 44) dans un bloc moteur (26) d'un moteur à combustion interne, le noyau de coulée (1) présentant
    - segment de support (2),
    - deux segments de tenons (11, 12) qui dépassent d'une face latérale (10) du segment de support (2) et sont disposés à distance l'un de l'autre, et
    - au moins un segment de traverse (15, 16) maintenu à distance du segment de support (2) par les segments de tenons (11, 12),
    le noyau de coulée (1) étant formé, au moins dans la zone de son segment de traverse (15, 16), en un sable de fonderie, dont les grains comportent un diamètre moyen au maximum de 0,35 mm,
    et
    l'épaisseur minimale (dmin) du segment de traverse (15, 16) mesurée comme distance de ses faces latérales (17, 18) l'une par rapport à l'autre est au maximum de 3 mm dans une zone (23, 24) située entre les segments de tenons (11, 12).
  3. Noyau de coulée selon la revendication 2, caractérisé en ce que les faces latérales (17, 18) de son segment de traverse (15, 16) pénètrent respectivement dans un passage sans fissures dans la surface circonférentielle (19, 20) des segments de tenons (11, 12) et son épaisseur (d) diminue continuellement à partir une épaisseur maximale (dmax) associée au segment de tenons (11, 12) respectif en direction longitudinale du segment de traverse (15, 16) jusqu'à l'épaisseur minimale (dmin).
  4. Noyau de coulée selon l'une des revendications 2 à 3, caractérisé en ce que l'épaisseur minimale (dmin) du segment de traverse (15, 16) est au maximum de 2 mm.
  5. Noyau de coulée selon l'une des revendications 2 à 4, caractérisé en ce que l'épaisseur minimale (dmin) du segment de traverse (15, 16) est au minimum de 1 mm.
  6. Noyau de coulée selon l'une des revendications 2 à 5, caractérisé en ce que la hauteur (h) du segment de traverse (15, 16) est au maximum de 4,5 mm dans la zone (23, 24) dans laquelle il a son épaisseur minimale (dmin).
  7. Noyau de coulée selon l'une des revendications 2 à 6, caractérisé en ce qu'il est formé intégralement à partir d'un sable de fonderie, dont les grains présentent un diamètre moyen au maximum de 0,35 mm.
  8. Noyau de coulée selon l'une des revendications 2 à 7, caractérisé en ce que le diamètre moyen des grains du sable de fonderie est au maximum de 0,25 mm
  9. Noyau de coulée selon l'une des revendications 2 à 8, caractérisé en ce que le diamètre moyen des grains du sable de fonderie est au maximum de 0,23 mm
  10. Noyau de coulée selon l'une des revendications 2 à 9, caractérisé en ce que les segments de tenons (11, 12) présentent une forme en section transversale formée à la manière d'une came, dont la pointe (13, 14) est tournée respectivement vers l'autre segment de tenons (12, 11).
  11. Noyau de coulée selon l'une des revendications 2 à 10, caractérisé en ce que deux ou plusieurs segments de traverse (15, 16) agencés distancés l'un par rapport à l'autre sont portés par les segments de tenons (11, 12), lesquels présentent respectivement une zone (23, 24) dans laquelle leur épaisseur minimale (dmin) est respectivement au maximum de 3 mm
EP15753438.9A 2014-07-09 2015-07-06 Noyau de coulée et procédé de fabrication d'un noyau de coulée Active EP3166740B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15753438T PL3166740T3 (pl) 2014-07-09 2015-07-06 Rdzeń odlewniczy i sposób wytwarzania rdzenia odlewniczego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014109598.7A DE102014109598A1 (de) 2014-07-09 2014-07-09 Gießkern, Verwendung eines Gießkerns und Verfahren zur Herstellung eines Gießkerns
PCT/IB2015/001121 WO2016005806A1 (fr) 2014-07-09 2015-07-06 Noyau de coulée, utilisation d'un noyau de coulée et procédé de fabrication d'un noyau de coulée

Publications (2)

Publication Number Publication Date
EP3166740A1 EP3166740A1 (fr) 2017-05-17
EP3166740B1 true EP3166740B1 (fr) 2020-06-03

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EP15753438.9A Active EP3166740B1 (fr) 2014-07-09 2015-07-06 Noyau de coulée et procédé de fabrication d'un noyau de coulée

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Country Link
US (1) US10850321B2 (fr)
EP (1) EP3166740B1 (fr)
JP (1) JP6246954B2 (fr)
KR (1) KR101889053B1 (fr)
CN (1) CN107073563B (fr)
DE (1) DE102014109598A1 (fr)
ES (1) ES2814149T3 (fr)
HU (1) HUE050240T2 (fr)
PL (1) PL3166740T3 (fr)
WO (1) WO2016005806A1 (fr)

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DE102017205384A1 (de) * 2017-03-30 2018-10-04 Volkswagen Aktiengesellschaft Zylinderkurbelgehäuse und Brennkraftmaschine mit einem solchen Zylinderkurbelgehäuse
DE102017213542A1 (de) * 2017-08-04 2019-02-07 Bayerische Motoren Werke Aktiengesellschaft Gießform sowie Verfahren zum Herstellen eines Kurbelgehäuses
FR3075676B1 (fr) * 2017-12-22 2021-10-15 Renault Sas Procede de realisation de canal interfuts dans un carter-cylindres
DE102019112918B3 (de) 2019-05-16 2020-07-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kern zur Verwendung bei einer gießtechnischen Herstellung eines Kurbelgehäuses

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KR20170023185A (ko) 2017-03-02
US20170173670A1 (en) 2017-06-22
KR101889053B1 (ko) 2018-09-20
JP2017521256A (ja) 2017-08-03
HUE050240T2 (hu) 2020-11-30
EP3166740A1 (fr) 2017-05-17
CN107073563B (zh) 2019-04-02
PL3166740T3 (pl) 2020-11-16
US10850321B2 (en) 2020-12-01
DE102014109598A1 (de) 2016-01-14
CN107073563A (zh) 2017-08-18
WO2016005806A1 (fr) 2016-01-14
ES2814149T3 (es) 2021-03-26

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