WO2010057810A1 - Carter de vilebrequin - Google Patents

Carter de vilebrequin Download PDF

Info

Publication number
WO2010057810A1
WO2010057810A1 PCT/EP2009/064955 EP2009064955W WO2010057810A1 WO 2010057810 A1 WO2010057810 A1 WO 2010057810A1 EP 2009064955 W EP2009064955 W EP 2009064955W WO 2010057810 A1 WO2010057810 A1 WO 2010057810A1
Authority
WO
WIPO (PCT)
Prior art keywords
crankcase
cylinder liner
salt core
casting
coolant
Prior art date
Application number
PCT/EP2009/064955
Other languages
German (de)
English (en)
Inventor
Stefan Obermaier
Original Assignee
Georg Fischer Automotive 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
Application filed by Georg Fischer Automotive Ag filed Critical Georg Fischer Automotive Ag
Publication of WO2010057810A1 publication Critical patent/WO2010057810A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0009—Cylinders, pistons
    • 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
    • B22C9/105—Salt cores
    • 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
    • F02F1/102—Attachment of cylinders to crankcase
    • 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
    • F02F1/16—Cylinder liners of wet type
    • 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
    • F02F2200/06—Casting

Definitions

  • the invention relates to a crankcase of an internal combustion engine, manufactured in a die-casting method, wherein in the crankcase, a cylinder liner is arranged, which is connected in a connecting region with the crankcase, wherein the crankcase has a coolant space for cooling the cylinder liner, and wherein the coolant space Pouring over a pressure-resistant and water-soluble salt core is formed.
  • crankcase In motor vehicle increasingly higher demands are placed on the internal combustion engines.
  • the engine should perform at the lowest possible weight as high as possible.
  • the top surface of the crankcase In the so-called closed deck engines, the top surface of the crankcase is formed substantially closed and provided only with a few small passages for the cooling medium. This creates a crankcase, which is much stiffer in the upper part. Due to the higher rigidity, it is easier to realize the seal between the cylinder head and the crankcase, whereby higher combustion pressures are possible in the cylinder. Cylinder head and crankcase can be formed with separate coolant spaces. The cooling effect can be more efficiently distributed to the cylinder head and crankcase. This makes it possible to set a different temperature in the crankcase than in the cylinder head.
  • the coolant space of the engine block which surrounds the cylinder liners is formed by a decomposable core of sand with a catalyst substance.
  • a salt core for producing a cavity in an article produced by die-casting is known. Based on this prior art, it is an object of the invention to provide a crankcase of an internal combustion engine, wherein the crankcase in the region of the coolant space has the highest possible rigidity, wherein the coolant space has an optimal for the heat exchange of the cooling medium geometry and wherein the coolant space formed as free of leakage is.
  • crankcase of an internal combustion engine produced in a die-casting method, wherein in the crankcase a Zylinderiaufbuchse is arranged, which is connected in a connecting portion with the crankcase, wherein the crankcase has a coolant space for cooling the Zylinderiillerbuchse, wherein the coolant space by casting a pressure-resistant and water-soluble Saizkernes is formed, and wherein the connecting portion of the crankcase with the Zylinderiaufbuchse is positively and / or cohesively formed.
  • connection region of the crankcase with the Zylinderiaufbuchse before casting around the Zylinderiaufbuchse a coating is formed, which reacts with the metal to be encapsulated and / or is effective as a primer.
  • the coolant space is formed completely surrounded by the casting material of the crankcase.
  • a stress-free transition possible between cylinder liner and crankcase is achieved in that the profile of the coolant chamber the transition points between the crankcase and cylinder liner optimized flow, in particular without dead spaces is formed for the flow.
  • the flow of the coolant through the coolant space for the heat exchange can be optimized. This is achieved by arranging a distributor structure in the coolant space. This is also achieved in that the distributor structure is designed as a parallel to the cylinder liner extending deflecting plate.
  • FIG. 2 shows an enlarged detail of the crankcase of FIG. 1,
  • FIG. 3 shows a further section through the crankcase of FIG. 1,
  • Figure 4 shows a further section through the crankcase of Figure 1 and
  • FIG. 1 shows a section of a crankcase 1 with a cylinder liner 2 is shown schematically.
  • the crankcase 1 has immediately adjacent to the cylinder liner 2 a coolant chamber 3.
  • the coolant chamber 3 is produced by casting over a pressure-resistant and water-soluble salt core.
  • FIG. 1 shows how the salt core is arranged directly adjacent to the incoming cylinder liner 2.
  • the cylinder liner 2 with the melt of the crankcase 1 in a connection region. 4 cast around.
  • the cylinder liner 2 is made, for example, from a cast iron alloy or a hypereutectic silicon-aluminum alloy, ie an aluminum alloy which, depending on the content of the further alloying elements, contains at least 12% by weight of Si.
  • the crankcase 1 may be made of a light metal alloy.
  • the outside of the cylinder liner 2 is pretreated before casting.
  • the pretreatment may be a coating with a metal or a metal alloy, which reacts with the metal to be encapsulated and / or acts as a bonding agent.
  • the coating will partially diffuse in the metal of the cylinder liner 2 and partly in the metal of the crankcase 1. To enlarge the surface and thus the adhesion in the connection area 4, can on the outside of the
  • Cylinder liner 2 a kind of labyrinth structure can be formed.
  • the oxide skin which is located on the surface of the aluminum parts, can be dissolved with a reacting with the melt of the crankcase 1 Beizung.
  • FIG 2 it is shown how the transition point in the connecting area 4 between the crankcase 1 and the Zyl ⁇ ndermaschinese 2 can be formed as large as possible and as possible not kerb carti.
  • the salt core has a rounded shape, such that a flow-favorable profile as possible for the flow of the cooling medium through the coolant space 3 is created.
  • the salt core is not directly, but arranged with an intermediate layer 5 on the outside of the cylinder liner.
  • the intermediate layer 5 causes the coolant chamber 3 after casting completely surrounded by the material of the crankcase 1 is formed.
  • the coolant space 3 can be optimally dimensioned is formed leak-free to the cylinder liner 2 and the cylinder liner 2 itself is optimally integrated in the engine block.
  • the intermediate layer 5 is formed from a material which, similar to the so-called "lost foam” method, dissolves or melts during casting over with the aluminum melt.
  • the intermediate layer 5 can also be made from a material having an open-pored structure, for example aluminum foam The open-pore intermediate layer 5 is infiltrated during casting from the melt.
  • annular reinforcing structure 6 is shown within the coolant chamber 3 before the Umgiessen.
  • the reinforcing structure 6 is formed as an annular bent part, which is arranged parallel to and spaced from the cylinder liner 2.
  • the sheet metal part 6 is used before encapsulation to reinforce the salt core and remains after dissolving the salt core as a deflection or distribution structure 7 in the coolant chamber 3 back.
  • the reinforcing structure 6 can be completely enclosed by the salt core or emerge at favorable points out of the salt core in order to better position the salt core in the casting mold.
  • the reinforcing structure 6 remains after the casting process and after flushing the salt core as a distributor structure 7 in theharimitteiraum 3 back and serves for better control of the coolant flow through the coolant cavities 3.
  • the heat exchange and the cooling effect of the crankcase 1 and the cylinder liner 2 is improved ,
  • FIG. 5 shows in a further variant how the salt core can be reinforced.
  • a mat 8 made of a fibrous material is shown in the salt core.
  • the fibers of the mat 8 may be short or long. If the fibers are relatively short, they are flushed out with the salt after the casting process and can be reused as well as the salt itself. In this case, the fibers mainly serve to reinforce and increase the pressure resistance of the salt core.
  • the mat serves First, to increase the pressure resistance of the salt core and second, to optimize the heat exchange in the coolant chamber. 3
  • the strength of the crankcase 1 in the region of the coolant chamber 3 is improved.
  • the salt core can be pressure resistant, which is important for use in the die casting process. By modifying the salt core, the flow and the heat exchange in theissermitteiraum 3 can be improved.
  • the crankcase 1 has in the region of the cylinder liner 2 and the
  • Coolant chamber 3 has a higher rigidity and the combustion pressure in the cylinder can be significantly increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

L'invention concerne un carter de vilebrequin de moteur à combustion interne, qui est fabriqué selon un procédé de moulage sous pression. Une chemise de cylindre est disposée dans le carter de vilebrequin, le carter de vilebrequin présente un espace pour réfrigérant séparé du circuit de réfrigérant de la culasse, l'espace pour réfrigérant est réalisé par moulage autour d'un noyau de sel résistant à la pression et hydrosoluble, et la zone de liaison du carter de vilebrequin à la chemise de cylindre est réalisée à force et/ou par liaison de matière.
PCT/EP2009/064955 2008-11-18 2009-11-11 Carter de vilebrequin WO2010057810A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08105811.7 2008-11-18
EP08105811A EP2186582A1 (fr) 2008-11-18 2008-11-18 Boîtier de manivelle

Publications (1)

Publication Number Publication Date
WO2010057810A1 true WO2010057810A1 (fr) 2010-05-27

Family

ID=40227702

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/064955 WO2010057810A1 (fr) 2008-11-18 2009-11-11 Carter de vilebrequin

Country Status (2)

Country Link
EP (1) EP2186582A1 (fr)
WO (1) WO2010057810A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013015395A1 (de) * 2013-09-17 2015-03-19 Daimler Ag Gussbauteil mit wenigstens einem durch einen Gießkern gebildeten porösen Metallkörper

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5572847B2 (ja) 2010-03-17 2014-08-20 株式会社Ｍｏｒｅｓｃｏ シリンダライナ及びその製造方法
DE102010051356B4 (de) 2010-11-13 2019-02-21 Volkswagen Ag Verfahren zur Herstellung eines Einlegeteils für die Erzeugung eines Hohlraums in einem Gussbauteil sowie Einlegeteil

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4446906A (en) * 1980-11-13 1984-05-08 Ford Motor Company Method of making a cast aluminum based engine block
EP0465947A1 (fr) * 1990-06-28 1992-01-15 Ube Industries, Ltd. Procédé et dispositif de moulage d'un bloc-moteur
US5921312A (en) * 1996-07-01 1999-07-13 Alyn Corporation Soluble core for casting
EP1688517A1 (fr) * 2005-02-03 2006-08-09 Ford-Werke GmbH Procédé de fabrication d'une couche métallique d'adhésion sur une pièce coulée
US20070009669A1 (en) * 2005-07-08 2007-01-11 Noritaka Miyamoto Insert casting component, cylinder block, method for forming coating on insert casting component, and method for manufacturing cylinder block
DE102005061196B3 (de) * 2005-12-21 2007-01-11 Daimlerchrysler Ag Gießverfahren mit verlorenem Kern und eingegossener Komponente
DE102007014146A1 (de) * 2007-03-23 2007-11-22 Daimlerchrysler Ag Druckgießwerkzeug
WO2008138508A1 (fr) * 2007-05-16 2008-11-20 Daimler Ag Procédé pour réaliser un carter moteur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004006600B4 (de) 2004-02-11 2006-03-23 Ks Aluminium-Technologie Ag Entfernbarer Kern zum Metallgießen und Verfahren zur Herstellung eines Kerns

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4446906A (en) * 1980-11-13 1984-05-08 Ford Motor Company Method of making a cast aluminum based engine block
EP0465947A1 (fr) * 1990-06-28 1992-01-15 Ube Industries, Ltd. Procédé et dispositif de moulage d'un bloc-moteur
US5921312A (en) * 1996-07-01 1999-07-13 Alyn Corporation Soluble core for casting
EP1688517A1 (fr) * 2005-02-03 2006-08-09 Ford-Werke GmbH Procédé de fabrication d'une couche métallique d'adhésion sur une pièce coulée
US20070009669A1 (en) * 2005-07-08 2007-01-11 Noritaka Miyamoto Insert casting component, cylinder block, method for forming coating on insert casting component, and method for manufacturing cylinder block
DE102005061196B3 (de) * 2005-12-21 2007-01-11 Daimlerchrysler Ag Gießverfahren mit verlorenem Kern und eingegossener Komponente
DE102007014146A1 (de) * 2007-03-23 2007-11-22 Daimlerchrysler Ag Druckgießwerkzeug
WO2008138508A1 (fr) * 2007-05-16 2008-11-20 Daimler Ag Procédé pour réaliser un carter moteur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013015395A1 (de) * 2013-09-17 2015-03-19 Daimler Ag Gussbauteil mit wenigstens einem durch einen Gießkern gebildeten porösen Metallkörper
US10300524B2 (en) 2013-09-17 2019-05-28 Daimler Ag Casting component having at least one porous metal body formed by a casting core

Also Published As

Publication number Publication date
EP2186582A1 (fr) 2010-05-19

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