EP1525384A1 - Carter-cylindres coule sous pression - Google Patents

Carter-cylindres coule sous pression

Info

Publication number
EP1525384A1
EP1525384A1 EP03764931A EP03764931A EP1525384A1 EP 1525384 A1 EP1525384 A1 EP 1525384A1 EP 03764931 A EP03764931 A EP 03764931A EP 03764931 A EP03764931 A EP 03764931A EP 1525384 A1 EP1525384 A1 EP 1525384A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
cast
die
row
liners
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.)
Granted
Application number
EP03764931A
Other languages
German (de)
English (en)
Other versions
EP1525384B1 (fr
EP1525384B8 (fr
Inventor
Norbert Grunenberg
Guido Söll
Heinrich Wodarski
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=30469039&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1525384(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1525384A1 publication Critical patent/EP1525384A1/fr
Publication of EP1525384B1 publication Critical patent/EP1525384B1/fr
Application granted granted Critical
Publication of EP1525384B8 publication Critical patent/EP1525384B8/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/108—Siamese-type cylinders, i.e. cylinders cast together
    • 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
    • F02F2001/106—Cylinders; Cylinder heads  having cooling means for liquid cooling using a closed deck, i.e. the water jacket is not open at the block top face
    • 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
    • F02F7/0085—Materials for constructing engines or their parts
    • F02F2007/009—Hypereutectic aluminum, e.g. aluminum alloys with high SI content
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0436—Iron
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/06—Silicon
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/4927—Cylinder, cylinder head or engine valve sleeve making

Definitions

  • the invention relates to a die-cast cylinder crankcase according to the preamble of claim 1 and a method for producing a die-cast cylinder crankcase according to claim 5.
  • the cylinder crankcases of large series engines are preferably manufactured in die-cast aluminum.
  • cylinder liners are usually inserted into the tool and overmolded. The distances between the cylinder liners partially decrease to less than 3 mm. Narrower webs reduce the rigidity of the cylinder crankcase.
  • the object of the invention is to provide a die-cast cylinder crankcase and a method for its production which, compared to the prior art, has improved rigidity and more effective cooling with a small web width between the cylinder liners.
  • the object is achieved in a die-cast cylinder crankcase according to claim 1, and in a method for producing a die-cast cylinder crankcase according to claim 5.
  • the die-cast cylinder crankcase according to claim 1 is characterized in that it has a number of cylinder liners cast together. Such a series of cylinder liners is referred to in technical jargon as a liner, which is why this term is also used in the following.
  • the liner is cast into the cylinder crankcase.
  • Die-casting is understood here to mean both die-casting and squeeze-casting, the cylinder crankcase basically being able to consist of all alloys suitable for this, in particular aluminum alloys, but also magnesium alloys.
  • the liner is cast in sand or gravity die casting and therefore has the advantage that cavities or undercuts can be represented comparatively easily. Therefore, the liner has an at least partially closed water jacket with different cooling channels. INS in particular, the water jacket is at least partially closed in the direction of a cylinder head side of the cylinder crankcase. This leads to a larger sealing surface on a mounting surface of the cylinder head and to a better seal between the cylinder head and the cylinder crankcase.
  • Another advantage of the cylinder crankcase according to the invention is that the webs between the cylinder liners can be provided with cooling channels.
  • the distances between them are only between 3 mm and 4 mm. Milling or drilling cooling channels in the land areas between cylinder liners is complex and expensive. Cooling channels in the web areas can already be integrated when using the liners according to the invention.
  • the liner can be made of any castable material that meets the tribological and thermal requirements for cylinder liners.
  • the liners are preferably made of a gray cast iron material.
  • a liner is usually made of an over-eutectic aluminum-silicon alloy or ordinary aluminum casting alloys (standard alloys) ) used.
  • the liner is represented by a standard casting alloy based on aluminum instead of a hypereutectic AlSi alloy.
  • mold or sand-cast components have a lower porosity.
  • the lower porosity makes it easier to apply a tribologically stable layer, preferably a thermal spray layer, and improves its adhesion.
  • the spray layer serves as a wear protection layer and cylinder running surface.
  • Another advantage of this variant is the more favorable casting properties of standard aluminum alloys.
  • Another component of the invention is a method for producing a cylinder crankcase according to claim 5, which comprises the following method steps:
  • a liner is manufactured using a casting process known per se (sand or permanent mold casting). The casting takes place using a lost core, which is used to form cooling channels. The liner has an at least partially closed water jacket.
  • the liner is then inserted into a die casting tool.
  • the bores of the individual cylinder liners of the liner are placed on quills in the die casting tool and thus fixed.
  • the die casting tool is then also poured out using a known die casting method.
  • the liner is poured into the cylinder crankcase, with the two metal alloys (liner and cylinder crankcase) being at least partially connected.
  • FIG. 1 is a plan view of a cylinder crankcase with a liner
  • Fig. 2 shows a cross section through a cylinder crankcase with a liner in the region of a cylinder bore
  • Fig. 3 is a longitudinal section through a cylinder crankcase with a liner.
  • FIG. 1 starting from a cylinder head side 18 (see FIG. 2), a top view of a cylinder crankcase 2 with a liner 4 cast in accordance with the invention is shown.
  • the Liner 4 comprises a plurality of cylinder liners 5, which are each separated from one another by web regions 12 and are delimited by the cylinder liners 15.
  • the cylinder liners 5 of the liner 4 are cast together in one casting process.
  • a water jacket 6 is cast in the outer region 9 of the liner 4.
  • the water jacket 6 comprises a plurality of cooling ducts 8, 10, which are usually connected to one another.
  • the water jacket 6 of the liner 4 is through transfer openings
  • the course of cooling channels 10 in the web area 12 is also shown in dashed lines. Screw holes 16 are used to fasten the cylinder head.
  • FIG. 2 The cross section shown in FIG. 2 through the cylinder crankcase 2 and the liner 4 illustrates the course of the largely closed outer cooling channels 8, and the water jacket 14 in the cylinder crankcase is also shown.
  • FIG. 3 shows a longitudinal section through a cylinder crankcase 2 with a liner 4.
  • the cooling channels 10 are highlighted in the web area 12. These are also largely closed and, as shown in broken lines in FIG. 1, are connected to the cooling channels 8.
  • a mold with an integrated sand core is provided.
  • the mold has the contour of the liner 4, the sand core forms the later water jacket 6.
  • the core can have a minimum width of 1.5 mm.
  • an over-eutectic aluminum-silicon alloy for example AlSil5, A1SÜ7 or AlSi9
  • AlSil5 an over-eutectic aluminum-silicon alloy
  • the liner 4 is removed from the mold, the sand core is removed and the liner 4 is deburred and / or machined if necessary.
  • a surface treatment of the liner 4 can optionally be carried out, which can improve the connection to the cylinder crankcase 2. This can include mechanical roughening, such as sandblasting, chemical treatments, or coatings.
  • the liner 4 is placed in a die-casting tool on quills.
  • a suitable aluminum alloy e.g. B. poured an AlSi9Cu3.
  • the liner 4 can be designed closed toward an oil pan side 20. This can be done through a base (not shown) that is already cast on during the manufacture of the liner 4. This measure prevents penetration (injection) of the aluminum melt between the cylinder surfaces 15 and the sleeve during die casting. The postprocessing effort is significantly reduced. Only the bottom, which closes the cylinder liner 5, has to be machined.
  • Another advantage of the cylinder crankcase 2 according to the invention is that the individual Cylinder liners increased surface area of the liner 4 leads to a better connection between the cylinder crankcase 2 and the cast part (liner 4). This in turn improves the heat transfer between the thermally highly loaded cylinder running surfaces 15 and the cylinder crankcase 2.
  • the integrated design of the liner 4 prevents the cylinder liners from occasionally dropping slightly during engine operation (setting). It also prevents cooling water from getting into the oil circuit, which can occur if there is a gap between the bushing and the encapsulation (cylinder crankcase) for individual bushings.
  • the liner is cast in the mold casting by an AISi7Mg alloy. After machining, a layer is applied to the inner surfaces of the cylinder liners by plasma spraying. This layer of a hypereutectic AlSi alloy serves as a cylinder running surface after finishing (fine turning, honing).
  • the layer can be applied by all common coating methods.
  • Thermal spray coatings such as plasma spraying, arc wire spraying or flame spraying, have proven their worth.
  • any wear-resistant material that is tribologically coordinated with the friction partner, a piston ring (and piston shirt) can also be used as the layer material.

Landscapes

  • 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

L'invention concerne un carter-cylindres coulé sous pression dans lequel est coulée une chemise (4) constituée de plusieurs enveloppes de cylindre. Cette chemise (4) est produite par coulage en sable et placée dans l'outil de coulée sous pression. Ladite chemise (4) comprend une chambre d'eau (6) au moins partiellement fermée. Cette chambre d'eau (6) peut comporter éventuellement des canaux de refroidissement (10) dans la zone de jonction (12).
EP03764931A 2002-07-23 2003-07-01 Carter-cylindres coule sous pression Expired - Fee Related EP1525384B8 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10233359 2002-07-23
DE10233359A DE10233359A1 (de) 2002-07-23 2002-07-23 Druckguss-Zylinderkurbelgehäuse
PCT/EP2003/006984 WO2004009986A1 (fr) 2002-07-23 2003-07-01 Carter-cylindres coule sous pression

Publications (3)

Publication Number Publication Date
EP1525384A1 true EP1525384A1 (fr) 2005-04-27
EP1525384B1 EP1525384B1 (fr) 2007-11-14
EP1525384B8 EP1525384B8 (fr) 2008-01-23

Family

ID=30469039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03764931A Expired - Fee Related EP1525384B8 (fr) 2002-07-23 2003-07-01 Carter-cylindres coule sous pression

Country Status (6)

Country Link
US (1) US20060124082A1 (fr)
EP (1) EP1525384B8 (fr)
CA (1) CA2492896A1 (fr)
DE (2) DE10233359A1 (fr)
MX (1) MXPA05000689A (fr)
WO (1) WO2004009986A1 (fr)

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DE102007007684A1 (de) * 2007-02-16 2008-08-28 Audi Ag Verfahren zum Herstellen eines mechanisch bearbeiteten, gegossenen Werkstücks mit mindestens einer maßhaltigen geometrischen Struktur
DE102007023060A1 (de) * 2007-05-16 2008-11-20 Daimler Ag Verfahren zur Herstellung eines Zylinderkurbelgehäuses
DE102007041010A1 (de) * 2007-08-29 2009-03-05 Mahle International Gmbh Zylinderkurbelgehäuse für einen Verbrennungsmotor
DE102008039208A1 (de) 2008-08-20 2009-02-12 Heppes, Frank, Dipl.-Ing. Urformkerne zur Herstellung umfangreich konturierter, hinterschnittener Hohlräume in Urformteilen, damit hergestellte Urformteile sowie Verfahren zur Herstellung, Anwendung und Entfernung der Kerne
US8816460B2 (en) 2009-04-06 2014-08-26 Nokia Corporation Image sensor
DE102010047325B4 (de) 2010-10-01 2021-11-18 Daimler Ag Brennkraftmaschine mit einem Zylindergehäuse aus Leichtmetallguss und mit Zylinderlaufbuchsen aus Rauguss
DE102012006967A1 (de) * 2012-04-04 2013-10-10 Daimler Ag Aluminium-Druckgusslegierung für Motorbauteile und Herstellungsverfahren
CN103541828B (zh) * 2012-07-17 2014-10-08 安徽华菱汽车有限公司 发动机及其缸套缸体的冷却结构
DE102012110258A1 (de) * 2012-10-26 2014-04-30 Ks Aluminium-Technologie Gmbh Verfahren zur Herstellung eines Zylinderkurbelgehäuses
DE102013020838B4 (de) 2013-08-16 2022-05-25 Mercedes-Benz Group AG Zylinderkurbelgehäuse für eine Hubkolben-Verbrennungskraftmaschine
US9528464B2 (en) 2014-08-11 2016-12-27 Ford Global Technologies, Llc Bore bridge cooling passage
US9950449B2 (en) 2015-03-02 2018-04-24 Ford Global Technologies, Llc Process and tool for forming a vehicle component
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DE102017206714A1 (de) 2017-04-21 2018-10-25 Ford Global Technologies, Llc Vorrichtung zur gießtechnischen Herstellung eines Zylinderkurbelgehäuses und Herstellungsverfahren
DE102017206715A1 (de) 2017-04-21 2018-10-25 Ford Global Technologies, Llc Vorrichtung zur gießtechnischen Herstellung eines Zylinderkurbelgehäuses und Herstellungsverfahren
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Also Published As

Publication number Publication date
CA2492896A1 (fr) 2004-01-29
EP1525384B1 (fr) 2007-11-14
MXPA05000689A (es) 2005-04-08
DE50308609D1 (de) 2007-12-27
DE10233359A1 (de) 2004-02-19
US20060124082A1 (en) 2006-06-15
EP1525384B8 (fr) 2008-01-23
WO2004009986A1 (fr) 2004-01-29

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