WO2000037789A1 - Bloc-cylindres et procede de fabrication dudit bloc - Google Patents

Bloc-cylindres et procede de fabrication dudit bloc Download PDF

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Publication number
WO2000037789A1
WO2000037789A1 PCT/EP1999/009467 EP9909467W WO0037789A1 WO 2000037789 A1 WO2000037789 A1 WO 2000037789A1 EP 9909467 W EP9909467 W EP 9909467W WO 0037789 A1 WO0037789 A1 WO 0037789A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
crankcase
coating
inlet chamfer
thermal coating
Prior art date
Application number
PCT/EP1999/009467
Other languages
German (de)
English (en)
Inventor
Udo Schlegel
Reinhard Vogelsang
Original Assignee
Volkswagen Aktiengesellschaft
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 Volkswagen Aktiengesellschaft filed Critical Volkswagen Aktiengesellschaft
Publication of WO2000037789A1 publication Critical patent/WO2000037789A1/fr

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Classifications

    • 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 
    • F02F1/18—Other cylinders
    • F02F1/20—Other cylinders characterised by constructional features providing for lubrication

Definitions

  • the invention relates to a cylinder crankcase, in particular for an internal combustion engine, with the features mentioned in the preamble of claim 1 and a method for producing a cylinder crankcase with the features mentioned in the preamble of claim 5.
  • an aluminum engine block is known from US Pat. No. 2,588,422, the cylinder raceways of which have a thermally sprayed coating.
  • GB 2 050 434 A discloses various coatings obtained by thermal spraying. These coatings are on steel or cast parts of internal combustion engines, such as piston rings or cylinder liners.
  • Another coating for cylinder liners is known from DE AS 21 46 153, in which a plasma coating is described.
  • thermal coating for example a plasma coating
  • a coating material in particular a metal
  • a flame melted in it and deposited on a substrate.
  • coatings with different properties in particular with desired sliding properties, hardness properties, layer thicknesses or the like, can be achieved.
  • the invention has for its object to provide a cylinder crankcase of the generic type, which is characterized by a precise guide for cylinder pistons.
  • the invention is also based on the object Specify method of the generic type with which a precise manufacture of cylinder crankcases is possible.
  • this object is achieved by a cylinder crankcase with the features mentioned in claim 1.
  • the at least one cylinder bore on a cylinder head surface of the cylinder crankcase has an inlet chamfer and the cylinder running surface is provided with a thermal coating up to a transition to the inlet chamfer, it is advantageously achieved that the thermal coating on the one hand has excellent sliding / running properties of the cylinder pistons in the cylinder bores can be reached and, on the other hand, due to the simultaneously provided chamfer, an exact introduction of a reworking tool, in particular a reamer for honing (fine finishing) of the cylinder running surfaces, can take place.
  • This exact insertion of the post-processing tools through the insertion chamfer leads to a particularly optimal machining of the cylinder running surfaces.
  • the inlet chamfer does not have the thermal coating and the cylinder running surfaces have the thermal coating, it is achieved that no damage, such as delamination or the like, can occur during the reworking of the cylinder running surface, particularly at its transition to the cylinder head surface.
  • the reworked cylinder running surfaces are characterized by a thermal coating with high adhesive tensile strength right up to their transition into the intake chamfer.
  • the thermal coating has a chamfer corresponding to the inlet chamfer at its upper end. This advantageously ensures that there is no abrupt transition from the material of the cylinder crankcase to the thermal coating within the inlet chamfer. As a result, the reworked cylinder running surface has the optimal sliding or running properties.
  • the quasi-assembled inlet chamfer also advantageously ensures that exact guidance is provided during the assembly of the internal combustion engine, in particular the insertion of the cylinder pistons with their piston rings into the cylinder bores.
  • the inlet chamfer enables the cylinder pistons to be inserted into the cylinder bores in a self-adjusting manner without a transition region between the thermal coating and the cylinder head surface being thereby subjected to a mechanical load.
  • this avoids sudden transitions in the inlet chamfer between the cylinder crankcase and the thermal coating. These can therefore not be points of attack for mechanical and / or chemical stress during post-processing and during piston assembly or the operation of the internal combustion engine.
  • the thermally coated cylinder running surfaces are characterized by an optimal surface quality, which leads to a long service life of the internal combustion engine. Damage to the cylinder barrel surface, in particular in its critical transition area to the cylinder head surface, is thus avoided.
  • the thermal coating is first applied and then removed in the area of the inlet chamfer. In addition to the advantages of the single chamfer, this results in technological advantages in production.
  • the edge region around the cylinder running surface is broken before the thermal coating is applied. In this way, a notch effect of the edge area is excluded, which can lead to flaking, cracks or the like within the thermal coating.
  • Figure 1 is a schematic view of a processing station for thermal
  • Figure 2 is a schematic side view of a processing section of the
  • FIG. 3 shows a schematic top view of the processing section according to FIG.
  • Figure 4 is a schematic partial view of a cylinder bore during machining
  • Figure 5 shows a thermally coated cylinder barrel before finishing
  • Figure 6 shows a thermally coated cylinder barrel after finishing.
  • FIG. 1 schematically shows a processing station 10 for the thermal coating of cylinder running surfaces of cylinder crankcases 12. Only one cylinder crankcase 12 is indicated in each case, this also only having indicated cylinder bores 14, here four. The walls delimiting the cylinder bores 14, that is to say the cylinder running surfaces, are to be coated by means of the processing station 10. The coating is done using a plasma coating technique. In the context of the present description, the actual process of plasma coating is not dealt with in more detail, since this is known.
  • the cylinder crankcases 12 are moved through the processing station 10 by means of a transport path 16, for example a roller conveyor or the like.
  • the processing station 10 comprises processing sections 18, 20, 22, 24, 26, 28, 30, 32, 34 and 36, 37 and 39. The individual processing sections will be briefly discussed below.
  • FIG. 1 details such as drives, locks, inlets and outlets for gases, electrical energy or other media, control and monitoring devices or the like have been omitted for reasons of clarity.
  • the processing section 18 comprises a feed station at which the cylinder crankcases are transferred to the processing station 10.
  • the cylinder crankcase 12 are already in a way not to be considered here manufactured and machined with all the necessary functional elements, such as cylinder bores, coolant channels, fitting bores or the like.
  • the processing section 20 comprises a washing or cleaning station, within which the cylinder crankcases are completely washed free of chips and oil. Furthermore, the cylinder running surfaces to be coated are dried and degreased absolutely. The absence of chips and oil is achieved, for example, by an injection flood wash, with critical areas, such as undercuts, bores, cavities or the like, being cleaned at high pressure by targeted injection of a wash liquor. Degreasing is carried out, for example, by superheated steam, which is conducted, for example, by appropriately designed lances onto the cylinder surfaces of the cylinder crankcase 12.
  • the superheated steam for example, has an outlet temperature of 120 ° C to 160 ° C and is introduced at an outlet pressure of approximately 120 to 180 mbar.
  • the subsequent drying of the cylinder crankcase is preferably carried out under vacuum, for example at a negative pressure of 80 to 120 mbar.
  • the previously cleaned and dried cylinder crankcase 12 is provided with a cover template 38.
  • the cover template 38 has openings 40 indicated here.
  • the openings 40 are aligned with the cylinder bores 14, so that when the cover template 38 is applied, the cylinder bores 14 remain accessible from above through the openings 40.
  • the cover template 38 is designed such that all other areas of the cylinder crankcase 12 are covered by the latter. This applies in particular to coolant channels, fitting bores or the like.
  • the cover template 38 can be placed on the cylinder crankcase 12 manually or by a corresponding gripper or the like.
  • the cover template 38 has an exact flat underside, which rests on the cylinder head surface of the cylinder crankcase 12 that has already been milled flat. To fix the cover template 38, this can have fixing pins, not shown in detail here, which engage, for example, in fitting holes provided anyway in the cylinder crankcase 12, for example for later attachment of a cylinder head.
  • the cover template 38 is made of a material that is resistant to the subsequent processing. In particular, this has a sufficiently high strength against a sandblast attack and against a plasma treatment and the like.
  • the cover template 38 lies only by their own weight on the cylinder crankcase 12.
  • Sandblasting of the cylinder bores 14 takes place in the machining section 24. This sandblasting is carried out in order to achieve a roughness of the cylinder running surfaces so that the plasma coating taking place in the machining section 32 obtains the necessary adhesive tensile strength.
  • at least one blasting lance possibly two or more blasting lances, is introduced into the cylinder bores 14 simultaneously or in succession. The lances reach through the openings 40 of the cover template 38.
  • Sandblasting is carried out, for example, with aluminum oxide Al 2 O 3 with a grain size of 0.18 to 1.18 mm, depending on the required surface roughness based on the substrate alloy of the cylinder crankcase or the tensile strength of the later plasma coating.
  • the sandblasting is preferably carried out using a double sandblasting unit which has two sandblasting lances.
  • the simultaneous sandblasting of the cylinder bores 1 and 3 takes place, that is to say cylinder bores 14 which are not immediately adjacent. This makes better handling possible in the case of relatively cramped available space conditions, which depend on the pitch of the cylinder bores 14. This also halves the machining for a complete cylinder crankcase, since two cylinder bores are machined simultaneously.
  • either the cylinder crankcase 12 or the sandblasting unit is moved by the pitch of the cylinder bore 14, so that the cylinder bores 2 and 4 can then be sandblasted.
  • the sandblasting takes place through the openings 40 of the cover templates 38, that is, the blasting lances are introduced through the cover template 38 into the cylinder bores 14. All other areas of the cylinder crankcase 12 are protected by the cover template 38 so that they do not come into contact with the sandblasting agent applied under pressure, so that the surfaces thereof are not impaired in any way.
  • the action of the sandblasting takes place exclusively on the cylinder running surfaces of the cylinder bores 14.
  • the sandblasted cylinder crankcase 12 is then cleaned in the machining section 26 by removing dust, in particular very fine dust, from the cylinder bores 14 by the sandblasting.
  • This can be done, for example, by cleaned (particle-free), de-oiled and water-free compressed air, for example with a pressure of approximately 5 to 6 bar, with simultaneous suction of the dusts.
  • all cylinder bores 14 are cleaned, that is, blown out and suctioned out, at the same time.
  • the cylinder crankcase 12 is measured, in particular a roughness measurement of the cylinder running surfaces.
  • the measurement can be carried out fully automatically by means of suitable devices, for example photogrammetry, a micromirror measurement system or a strip light projection. In this case, all cylinder bores 14 or a sample of only one of the cylinder bores 14 or a cylinder bore 14 of each nth cylinder crankcase 12 can be measured.
  • the cylinder crankcases are transferred to the machining section 32, in which the actual thermal coating of the cylinder running surfaces takes place.
  • the plasma coating is carried out in a manner known per se, in that a coating material, in particular a metal, is fed to a flame, melted out in the flame and deposited on the cylinder running surfaces.
  • a coating atmosphere for example oxygen and / or nitrogen or another process gas for stabilizing the flame and / or for regulating the proportion of oxide in the plasma layer, is also supplied.
  • the plasma coating of the cylinder running surfaces can be carried out individually for each of the cylinder bores 14 or, similarly to sandblasting, by means of a double plasma unit, by means of which the cylinder bores 1 and 3 and then the cylinder bores 2 and 4 are coated first. Due to the cover template 38 still located on the cylinder crankcase 12, an impairment, in particular contamination of areas of the cylinder crankcase 12 that are not to be coated are reliably avoided.
  • the cylinder crankcases are transferred to the processing section 34.
  • This can optionally be part of a cooling zone.
  • a separate cooling zone is provided between the plasma coating in the processing section 32 and the processing section 34.
  • the cover template 38 is removed. This is removed from the cylinder crankcase 12 either manually or by auxiliary devices. Since the cover template 38 rests only on the cylinder crankcase 12 due to its own weight, additional measures for removing the cover template 38 are not necessary. Finally, the cylinder crankcase 12 is removed in a machining section 36 of the machining station 10 and fed to a further machining, in the machining sections 37 and 39, in which an inlet chamfer is attached to the cylinder bores 14 and then honed. This will be discussed in more detail with reference to FIGS. 4 to 6.
  • the cylinder crankcase 12 can be marked in the section 36.
  • the cylinder crankcase 12 is marked, for example, by a serial number or the like.
  • the openings 40 of the cover template 38 are slightly larger than the cylinder bores 14, so that a corresponding edge coating of the edge regions of the cylinder crankcase 12 surrounding the cylinder bores 14 takes place. This advantageously ensures that the plasma coating on the cylinder running surfaces is retained during a subsequent chamfering of the cylinder bore 18.
  • the stenciling of the cylinder crankcase 12 is maintained throughout the entire passage through the processing sections 24, 26, 28, 30 and 32.
  • the covering templates are applied in the processing section 22 and removed in the processing section 34.
  • the covering templates 38 used in accordance with this exemplary embodiment must therefore be suitable both for sandblasting in the processing section 24 and for plasma coating in the processing section 32. Since on the one hand it is a material-removing process and on the other hand it is a material-applying process, the cover template 38 has to do justice to both mutually opposing processes.
  • the stenciling of the cylinder crankcase 12 is illustrated in a further exemplary embodiment with reference to FIGS. 2 and 3.
  • a schematic side view and a schematic top view of the machining section 24 or the machining section 32 are shown.
  • the basic structure within the processing sections 24 and 32 is the same. The only differences are the sandblasting devices as tools and the plasma coating devices as tools. However, this will not be dealt with in more detail in the context of the present description.
  • the stenciling of the cylinder crankcase 12 is decisive both in the case of sandblasting in the machining section 24 and in the case of plasma coating in the machining section 32.
  • a cylinder crankcase 12 is arranged on a lifting table 42.
  • the lifting table 42 is integrated in the transport path 16. This is done in such a way that the cylinder crankcase 12 is transported by means of the transport path 16 into the respective processing sections 24 and 32 and can be transferred there into its respective processing position by means of the lifting tables 42.
  • a machining tool 44 each having a lance or, according to the exemplary embodiments already explained, two or more lances 46.
  • the lances 46 are designed accordingly either for sandblasting in the processing section 24 or for plasma coating in the processing section 32.
  • the processing stations 24 and 32 further comprise a device, designated here overall with 50, for stenciling the cylinder crankcase 12.
  • a device designated here overall with 50
  • the device 50 comprises a turntable 52, which can be rotated about its axis of rotation 56 in defined steps by means of a drive 54.
  • the turntable 52 has, as the schematic plan view in FIG. 3 better illustrates, receptacles 58 for one cover template each. From the top view it is clear that the cover templates 38 only have the openings 40, which are each assigned to the cylinder bores 14.
  • the turntable 52 can be rotated step by step in a defined manner by means of the drive 54. In the exemplary embodiment shown, four templates 38 are arranged on the turntable 52, so that it can be rotated step by step in each case by 90 °.
  • the device 50 is associated with an indicated cleaning device 62, which may have a milling cutter 64, for example.
  • a device for exchanging wear sleeves which are arranged in the template 38, can also be provided.
  • suction devices 66 and 68 which are indicated here, are also provided.
  • the device 50 shown in FIGS. 2 and 3 has the following function:
  • Exactly one cover template 38 is always brought into a processing position by means of the drive 54.
  • the cover template 58 has reached its exact position, which is defined by the stops 60, the cylinder crankcase 12 is moved upward, that is to say against the cover templates 38, by means of the lifting table 42.
  • the openings in the cover template 38 and the cylinder bores 14 of the cylinder crankcase 12 come into an aligned position.
  • either tools are used for sandblasting in accordance with processing section 24 or plasma coating in accordance with processing section 32.
  • a next cover template 38 is in a transition position and a cover template 38 is in a position assigned to the cleaning device 62 (or sleeve exchange device).
  • Another cover template 38 is located between the cleaning position and the processing position. It is hereby achieved that at the same time when a masking mask 38 takes over its masking function, a second, namely this cover template 38, which is arranged exactly offset by 180 °, is cleaned by means of the device 62.
  • the milling device 64 can, for example, restore the dimensions of the openings 40 of the cover templates 38. This can be impaired, for example, by deposits during the plasma coating. The dimensional accuracy of the openings can also be achieved by replacing the corresponding wear sleeves in the cover templates.
  • each cylinder crankcase 12 is assigned a new (cleaned) cover template 38.
  • This ensures a constant processing quality during sandblasting or plasma coating. It is also possible to clean or replace the cover template after repeated use, for example after five to ten times use.
  • the arrangement of the cleaning device 62 can be dispensed with in the processing station 24, since there is no additional material application that could impair the dimensional accuracy of the openings 40. Merely because of the material removal, covering templates 38 or wear sleeves that are no longer true to size can be replaced.
  • FIG. 5 shows a schematic enlargement of a section of the cylinder crankcase 12 in the area of a cylinder bore 14.
  • the schematic enlargement is intended to clarify that the surface 70 to be coated was provided with a roughening 72 in the processing section 24 and with a coating 74 in the processing section 32.
  • the cover template 38 is arranged on the cylinder crankcase 12 and has the through opening 40 in the region of the cylinder bore 14.
  • the through opening 40 is - seen in diameter - slightly larger than the cylinder bore 14, so that an edge 76 is not covered by the cover template 38.
  • the edge 76 is, for example, between 2 and 3 mm.
  • edge 76 By forming the edge 76 it is achieved that during the sandblasting in the machining section 24 and the thermal coating in the machining section 32, the edge 76 is also treated, that is to say roughened and also coated. This results in a very good coating also in the area of the edge 76.
  • an inlet chamfer to the cylinder bores 14, which is still to be explained with reference to FIGS. 4 and 6, it is achieved that in the transition region to the inlet chamfer likewise a coating 74 with a sufficiently large size Adhesive tensile strength is arranged on the cylinder crankcase 12. A circumferential edge 77 of the wheel 76 is broken before the thermal coating.
  • a layer thickness dp of the coating 74 is indicated in FIG. The layer thickness is about 150 to 210 ⁇ m before the subsequent honing.
  • the coating 74 is also formed around 2 mm in the area of the edge 76, as indicated by r.
  • the cylinder crankcase 12 coated in this way is then further processed in the processing sections 37 and 39.
  • the processing sections 37 and 39 can be part of the processing station 10. However, it can also be provided that these are formed separately from the processing station 10, so that the coated cylinder crankcase 12 are transported to the processing sections 37 and 39 in a suitable manner.
  • a cutting plate 82 is positioned in the mouth 84 of the cylinder bore 14 by means of a tool 80 which is only partially shown here.
  • the tool 80 is first lowered into the cylinder bore so that a cutting surface 86 of the cutting plate 82 extends in the axial direction to the cylinder bore 14 over the entire height of the later inlet chamfer 78.
  • the cutting plate 82 is moved radially according to the arrow 88 against the edge 76.
  • the tool 80 is set in rotation according to the arrow 90 indicated. It is hereby achieved that as the radial displacement of the cutting plate 82 progresses, the cutting surface 86 comes into contact with the edge 76 and, according to the feed 88, removes the edge 76 to form the inlet chamfer 78. In this case, there is an exclusive radial displacement of the cutting plate 82. This ensures that the coating 74 applied to the cylinder crankcase 12 during this Processing the Einiaaufase 78 experiences no axial mechanical stress. This is only attacked radially by the cutting plate 82.
  • a mean roughness value r is, for example, ⁇ 1 ⁇ m and an average roughness depth r ⁇ ⁇ 5 ⁇ m.
  • a tool 80 with a cutting plate 82 is indicated in FIG. It is preferably provided that a tool 80 with three cutting plates 82 work on the inlet chamfer 78.
  • the cutting plates 82 are offset from one another, preferably offset from one another by 120 ° in each case.
  • the inserts 82 are axially offset from one another, so that each of the inserts partially removes the inlet chamfer 78.
  • the introduction of axial cutting forces during the radial feed 88 of the cutting plates 82 onto the coating 74 is greatly reduced. This ensures that no pre-damage, such as layer flaking, layer cracks or the like of the coating 74, can occur in the area of the inlet chamfer 78.
  • a transition 96 between coating 74 and cylinder crankcase 12 lies in the inlet chamfer 78.
  • the coating 74 is honed in the processing section 39. Here it is indicated in FIG. 6 that the coating 74 is removed by a layer thickness d ⁇ - during the honing, so that a remaining layer thickness dR remains.
  • the finishing stock 94 is selected so that after finishing the cylinder head surface 92, the transition 96 lies in the inlet chamfer 78.
  • An angle ⁇ , at which the inlet chamfer 78 extends to the cylinder head surface 92, is between 5 and 45 °, in particular approximately 15 °.
  • the high-pression reamer can be inserted precisely into the coated cylinder bore 14 for honing.
  • Axial loads on the coating 74 which occur during the insertion of the reamer can be dissipated by the inlet chamfer 78, so that layer flaking, in particular in the region of the edge 76, of the coating 74 is avoided.
  • the inlet chamfer 78 is designed to be continuous, so that in the region of the inlet chamfer 78 there are no layered edges - through a smooth transition 96 - which are provided when the cylinder pistons are inserted Flaking or the like could tend.
  • the overcoating of the rim 76 during the thermal coating and the formation of the inlet chamfer 78 ensure an adhesive tensile strength of, for example> 30 Mpa, of the coating 74 over its entire extent within the cylinder bore 14, including the edge region and the chamfer 78 can.
  • This uniform adhesive tensile strength leads to an optimal running behavior of the pistons guided in the cylinder bores 14. This is also not affected by the honing in the machining section 39 and by the completion with the cylinder piston.
  • the exemplary embodiments related to a cylinder crankcase with four cylinder bores. To reduce the processing time, double sandblasting or double plasma units were provided.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

Bloc-cylindres, en particulier pour un moteur à combustion interne, doté d'au moins un alésage de cylindre destiné à recevoir un piston. Selon la présente invention, l'alésage (14) de cylindre présente un chanfrein (78) d'insertion sur une surface (92) adjacente à la culasse du bloc-cylindres (12), et la surface (70) du cylindre sur laquelle se déplace le piston est couverte d'un revêtement thermique (74) jusqu'à la transition avec le chanfrein (78) d'insertion.
PCT/EP1999/009467 1998-12-18 1999-12-03 Bloc-cylindres et procede de fabrication dudit bloc WO2000037789A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19860299.5 1998-12-18
DE19860299 1998-12-18
DE19946076.0 1999-09-25
DE19946076 1999-09-25

Publications (1)

Publication Number Publication Date
WO2000037789A1 true WO2000037789A1 (fr) 2000-06-29

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DE102009008741A1 (de) 2009-02-12 2010-08-19 Bayerische Motoren Werke Aktiengesellschaft Kurbelgehäuse
WO2011050891A1 (fr) 2009-10-31 2011-05-05 Bayerische Motoren Werke Aktiengesellschaft Carter de vilebrequin
DE102013200912A1 (de) 2012-02-02 2013-08-08 Ford Global Technologies, Llc Kurbelgehäuse
DE102012105521A1 (de) 2012-06-25 2014-01-02 Nemak Dillingen Gmbh Verwendung einer Kohlenstoffbeschichtung sowie Maskierungsmittel und Beschichtungsanlage zum thermischen Spritzen
US8752256B2 (en) 2008-04-21 2014-06-17 Ford Global Technologies, Llc Method for preparing a surface for applying a thermally sprayed layer
US8877285B2 (en) 2011-11-22 2014-11-04 Ford Global Technologies, Llc Process for repairing a cylinder running surface by means of plasma spraying processes
US9079213B2 (en) 2012-06-29 2015-07-14 Ford Global Technologies, Llc Method of determining coating uniformity of a coated surface
US9382868B2 (en) 2014-04-14 2016-07-05 Ford Global Technologies, Llc Cylinder bore surface profile and process
US9511467B2 (en) 2013-06-10 2016-12-06 Ford Global Technologies, Llc Cylindrical surface profile cutting tool and process
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DE102017207455A1 (de) * 2017-05-04 2018-11-08 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Bearbeiten eines Zylinders
WO2018215054A1 (fr) 2017-05-23 2018-11-29 Gühring KG Procédé et outil pour enlever une couche d'un substrat
US10220453B2 (en) 2015-10-30 2019-03-05 Ford Motor Company Milling tool with insert compensation

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GB2050434A (en) 1979-05-10 1981-01-07 Nippon Piston Ring Co Ltd Slidable members for internal combustion engines
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Cited By (23)

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Publication number Priority date Publication date Assignee Title
US8752256B2 (en) 2008-04-21 2014-06-17 Ford Global Technologies, Llc Method for preparing a surface for applying a thermally sprayed layer
DE102009008741A1 (de) 2009-02-12 2010-08-19 Bayerische Motoren Werke Aktiengesellschaft Kurbelgehäuse
DE102009008741B4 (de) * 2009-02-12 2014-11-20 Bayerische Motoren Werke Aktiengesellschaft Kurbelgehäuse
US8683972B2 (en) 2009-10-31 2014-04-01 Bayerische Motoren Werke Aktiengesellschaft Crankcase and method of manufacturing same
CN102656356A (zh) * 2009-10-31 2012-09-05 宝马股份公司 曲轴箱
DE102009051517A1 (de) 2009-10-31 2011-05-05 Bayerische Motoren Werke Aktiengesellschaft Kurbelgehäuse
CN102656356B (zh) * 2009-10-31 2014-10-22 宝马股份公司 曲轴箱
WO2011050891A1 (fr) 2009-10-31 2011-05-05 Bayerische Motoren Werke Aktiengesellschaft Carter de vilebrequin
US8877285B2 (en) 2011-11-22 2014-11-04 Ford Global Technologies, Llc Process for repairing a cylinder running surface by means of plasma spraying processes
DE102013200912A1 (de) 2012-02-02 2013-08-08 Ford Global Technologies, Llc Kurbelgehäuse
DE102013200912B4 (de) 2012-02-02 2018-05-30 Ford Global Technologies, Llc Kurbelgehäuse
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