EP2392813A1 - Zylinderkopf, Kern für die Herstellung eines solchen Zylinderkopfs, Herstellungsverfahren eines solchen Zylinderkopfs und entsprechendes Fahrzeug - Google Patents

Zylinderkopf, Kern für die Herstellung eines solchen Zylinderkopfs, Herstellungsverfahren eines solchen Zylinderkopfs und entsprechendes Fahrzeug Download PDF

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Publication number
EP2392813A1
EP2392813A1 EP11167499A EP11167499A EP2392813A1 EP 2392813 A1 EP2392813 A1 EP 2392813A1 EP 11167499 A EP11167499 A EP 11167499A EP 11167499 A EP11167499 A EP 11167499A EP 2392813 A1 EP2392813 A1 EP 2392813A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
core
cooling circuit
groove
cooling
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.)
Withdrawn
Application number
EP11167499A
Other languages
English (en)
French (fr)
Inventor
Nicolas Williame
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2392813A1 publication Critical patent/EP2392813A1/de
Withdrawn legal-status Critical Current

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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 
    • F02F1/24—Cylinder heads
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream 
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0285—Venting devices
    • 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 
    • F02F1/24—Cylinder heads
    • F02F1/243—Cylinder heads and inlet or exhaust manifolds integrally cast together

Definitions

  • the invention relates to a cylinder head for an internal combustion engine.
  • the invention also relates to a core for the manufacture of this cylinder head by molding.
  • the invention also relates to a method of manufacturing this cylinder head by molding from this core and a vehicle equipped with this cylinder head.
  • Cooling circuit means a network of pipes and / or communicating chambers capable of driving a coolant liquid within it.
  • this cooling circuit is disposed between inner and outer walls of the cylinder head.
  • heat transfer liquid is meant a liquid capable of transporting heat.
  • a mixture of water and ethylene glycol is a heat transfer liquid.
  • gas bubbles it is common for gas bubbles to be trapped in the cooling circuit. For example, these gas bubbles are dissolved in the coolant and released into the cooling circuit after boiling the liquid when it is heated to high temperature. These gas bubbles back to the top of the pipes and / or chambers of the cooling circuit, explode and thus exert a mechanical stress on the walls of the pipes or chambers. These bubbles can create holes in the walls of the cylinder head. As a result of coolant leaks may appear. In this case, the cooling of the cylinder head is inevitably less efficient and causes risks of overheating of the cylinder head. In case of overheating the risk of destruction of the engine exists.
  • the cylinder heads of the state of the art do not have a device for evacuating gases collected in this room.
  • the invention aims to solve one or more of these disadvantages.
  • the invention relates to a cylinder head for an internal combustion engine in which the cooling circuit comprises a degassing groove fluidly connecting a top of the cooling chamber to the cavity, the groove being inclined so that the gases move from this vertex to the exit cavity.
  • the embodiments of this cylinder head has the advantage of limiting the blocking of the gas bubbles inside the degassing groove.
  • the invention also relates to a core for the manufacture of a cylinder head, this core comprising a rib for producing the degassing groove.
  • the invention finally relates to a vehicle equipped with a cylinder head described above.
  • the figure 1 represents a vehicle 2.
  • the vehicle 2 is a motor vehicle such as a car.
  • This vehicle 2 is equipped with a combustion engine 4 with internal combustion.
  • This engine 4 is equipped with a shaft 6 which rotates drive wheels 8 and 10 of the vehicle 2.
  • the engine 4 comprises a cylinder block 12 comprising cylinders 14, 16, 18 and 20 adapted to receive pistons mounted in translation.
  • the engine 4 also comprises a cylinder head 22 disposed on the cylinder block 12.
  • This cylinder head 22 is able to close the cylinders 14, 16, 18 and 20 to form combustion chambers of the engine 4.
  • the cylinder head 22 is made of aluminum .
  • a cylinder head gasket 24 suitable for sealing the combustion chambers is disposed between the cylinder head 22 and the cylinder block 12.
  • the cylinder block 12, the cylinder head gasket 24 and the cylinder head 22 are attached to each other. other by means of screws or studs 26 and 28. In the example, the screws or studs 26 and 28 pass successively through the cylinder head 22, the seal 24 and the cylinder block 12 via bores 29 and 32.
  • the bolt 12 will now be presented in more detail with reference to the figure 2 .
  • the cylinder head 22 comprises an exhaust manifold 38 adapted to collect the exhaust gas at the outlet of the cylinders 14, 16, 18 and 20 of the engine 4 and to expel these gases out of the engine 4.
  • This cylinder head 22 also includes a cooling circuit 40 adapted to cool the cylinder head 22. To simplify the figure 2 only part of the cooling circuit 40 is shown.
  • the circuit 40 comprises an inlet pipe 42 through which a coolant liquid is introduced into the circuit 40.
  • the inlet pipe 42 is connected to a cylinder block.
  • the circuit 40 also comprises a heat transfer liquid outlet cavity 44 capable of collecting the coolant circulating in the circuit 40.
  • This cavity 44 also comprises an outlet pipe 48 through which the coolant liquid is discharged out of the cylinder head 22 to be cooled.
  • the tubing 48 opens into the cavity 44 through an orifice.
  • the tubing 48 belongs to a water outlet housing fixed to the cylinder head 22.
  • this water outlet housing is connected to a radiator via a not shown tubing. This radiator is able to cool the coolant.
  • the circuit 40 also comprises a cooling chamber 52 adapted to cool the collector 38.
  • This chamber 52 is disposed between the outer and inner walls of the collector 38.
  • the chamber 52 is shaped so that when the cylinder head is in the operating position , the gases dissolved in the coolant or formed by boiling of the coolant are guided to an apex 54 of the chamber 52.
  • the chamber 52 has a concave shape.
  • the top 54 of the chamber 52 is connected to the cavity 44 via a groove 56.
  • This groove 56 is able to evacuate and guide the gases from the top 54 of the chamber 52 to the cavity 44.
  • This groove 56 is inclined so that in the operating position of the cylinder head 22, the gases are guided towards the top 54 and then are removed from the chamber 52 to the cavity 44 via this groove 56.
  • the groove 56 does not present breaks in its shape to not cause blocking of the air bubbles within this groove 56.
  • the groove 56 is shaped so that in the operating position of the cylinder head groove 56 is strictly increasing. Still preferentially, the top of the groove 56 is rounded.
  • core means an element disposed within a mold during a manufacturing process of a part by molding so as to define a recessed area of the workpiece.
  • cores can be used for producing combustion chambers, ducts intake, exhaust duct or, as here, a cooling system of a cylinder head.
  • water core denotes a “core” for producing the cooling circuit 40.
  • the core 400 is sand.
  • the core 400 comprises a prism 440 for producing the heat transfer fluid outlet cavity 44.
  • This prism 440 comprises a first cylinder (not shown) for the embodiment of the outlet pipe 48 of the circuit 40.
  • the first cylinder extends cantilevered prism 440 to the outside of the core.
  • the core 400 also comprises a second cylinder (not shown) for producing the inlet pipe 42 of the circuit 40.
  • the second cylinder also extends cantilevered from the core 400 towards the outside of the core.
  • the rib 560 extends from an apex 540 of the volume 520 to the prism 440.
  • the height of the end of the rib 560 in contact with the volume 520 is less than the height. the end of the rib 560 in contact with the prism 440.
  • a core box is manufactured for producing the water core 400.
  • a groove 56 is made in the core box so that the water core 400 has the rib 560.
  • the core box comprises two half boxes on which is imprinted the imprint of the water core 400.
  • the assembly of the two half-boxes forms a recessed area whose shape is that of the core of water 400.
  • the core box is made of cast iron.
  • the water core 400 is made.
  • sand is introduced by blowing or firing into the core box.
  • the sand is then compressed and agglomerated with a binder.
  • a step 84 the water core is removed from the core box. This is then placed in a mold. In order to facilitate its positioning, the core ranges can be used. Other cores for other recessed areas may also be arranged within this mold. For example, in addition to the water core used for the realization of the circuit cooling, cores for producing combustion chambers, intake ducts, exhaust ducts may be arranged.
  • a step 86 the mold is closed and casting is carried out by means of a casting funnel provided for this purpose.
  • a casting funnel provided for this purpose.
  • liquid aluminum is melted and poured into the mold.
  • the cylinder head 22 is demolded.
  • the cores are removed by expelling the sand out of the breech.
  • the yoke is disposed on a vibrating system whose vibrations allow to dislodge the sand recessed areas of the cylinder head.
  • the yoke 22 may be made of other material than aluminum.
  • the groove 56 is not limited to the case where it is a degassing groove 56. It is conceivable to replace the groove with tubing or other hollow structure.
  • the groove 56 is not necessarily strictly increasing when the yoke 22 is in its operating position.
  • the groove 56 can also extend horizontally.
  • the core 400 may be made of other materials than sand.
  • the cylinder head can be directly integrated with the cylinder block.
  • the head gasket 24 may be omitted.
  • the water outlet housing can be integrated with the cylinder head.

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)
EP11167499A 2010-06-03 2011-05-25 Zylinderkopf, Kern für die Herstellung eines solchen Zylinderkopfs, Herstellungsverfahren eines solchen Zylinderkopfs und entsprechendes Fahrzeug Withdrawn EP2392813A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1054341A FR2960916A1 (fr) 2010-06-03 2010-06-03 Culasse, noyau pour la fabrication de cette culasse, procede de fabrication de cette culasse, et vehicule

Publications (1)

Publication Number Publication Date
EP2392813A1 true EP2392813A1 (de) 2011-12-07

Family

ID=43037179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11167499A Withdrawn EP2392813A1 (de) 2010-06-03 2011-05-25 Zylinderkopf, Kern für die Herstellung eines solchen Zylinderkopfs, Herstellungsverfahren eines solchen Zylinderkopfs und entsprechendes Fahrzeug

Country Status (2)

Country Link
EP (1) EP2392813A1 (de)
FR (1) FR2960916A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012015328A1 (de) * 2012-08-01 2014-02-06 GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) Gießkern und Gießvorrichtung
FR3058473A1 (fr) * 2016-11-04 2018-05-11 Peugeot Citroen Automobiles Sa Culasse de moteur thermique
WO2019073137A1 (fr) 2017-10-12 2019-04-18 Psa Automobiles Sa Dispositif avec tube de degazage et culasse d'un moteur thermique

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142977A (en) * 1983-07-11 1985-01-30 Nissan Motor Cylinder head of internal combustion engine
EP0134579A1 (de) * 1983-09-08 1985-03-20 Nissan Motor Co., Ltd. Kühlmantelvorrichtung für eine mit siedender Flüssigkeit gekühlten Brennkraftmaschine
EP0984149A2 (de) * 1998-08-31 2000-03-08 Honda Giken Kogyo Kabushiki Kaisha Zylinderkopfstruktur einer Brennkraftmaschine
EP1052394A2 (de) * 1999-05-14 2000-11-15 Bayerische Motoren Werke Aktiengesellschaft Flüssigkeitsgekühlte, mehrzylindrige Brennkraftmaschine mit am Zylinder-Kurbelgehäuse lösbar angeordnetem Zylinderkopf
JP2004044465A (ja) * 2002-07-11 2004-02-12 Honda Motor Co Ltd エンジンにおけるシリンダヘッド構造
EP1538327A1 (de) * 2003-12-04 2005-06-08 Ford Global Technologies, LLC, A subsidary of Ford Motor Company Zylinderkopf mit einem Kühlmittelmantel, der einen Kühlmantelkern und eine Entlüftungsleiste umfasst
FR2899501A1 (fr) * 2006-04-06 2007-10-12 Renault Sas Culasse comprenant un noyau d'eau pourvu d'une partie de degazage et procede de fabrication d'une telle culasse

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142977A (en) * 1983-07-11 1985-01-30 Nissan Motor Cylinder head of internal combustion engine
EP0134579A1 (de) * 1983-09-08 1985-03-20 Nissan Motor Co., Ltd. Kühlmantelvorrichtung für eine mit siedender Flüssigkeit gekühlten Brennkraftmaschine
EP0984149A2 (de) * 1998-08-31 2000-03-08 Honda Giken Kogyo Kabushiki Kaisha Zylinderkopfstruktur einer Brennkraftmaschine
EP1052394A2 (de) * 1999-05-14 2000-11-15 Bayerische Motoren Werke Aktiengesellschaft Flüssigkeitsgekühlte, mehrzylindrige Brennkraftmaschine mit am Zylinder-Kurbelgehäuse lösbar angeordnetem Zylinderkopf
JP2004044465A (ja) * 2002-07-11 2004-02-12 Honda Motor Co Ltd エンジンにおけるシリンダヘッド構造
EP1538327A1 (de) * 2003-12-04 2005-06-08 Ford Global Technologies, LLC, A subsidary of Ford Motor Company Zylinderkopf mit einem Kühlmittelmantel, der einen Kühlmantelkern und eine Entlüftungsleiste umfasst
FR2899501A1 (fr) * 2006-04-06 2007-10-12 Renault Sas Culasse comprenant un noyau d'eau pourvu d'une partie de degazage et procede de fabrication d'une telle culasse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012015328A1 (de) * 2012-08-01 2014-02-06 GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) Gießkern und Gießvorrichtung
FR3058473A1 (fr) * 2016-11-04 2018-05-11 Peugeot Citroen Automobiles Sa Culasse de moteur thermique
WO2019073137A1 (fr) 2017-10-12 2019-04-18 Psa Automobiles Sa Dispositif avec tube de degazage et culasse d'un moteur thermique

Also Published As

Publication number Publication date
FR2960916A1 (fr) 2011-12-09

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