EP0277446A1 - Zylinderblockkühlung für eine Brennkraftmaschine - Google Patents

Zylinderblockkühlung für eine Brennkraftmaschine Download PDF

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Publication number
EP0277446A1
EP0277446A1 EP87403006A EP87403006A EP0277446A1 EP 0277446 A1 EP0277446 A1 EP 0277446A1 EP 87403006 A EP87403006 A EP 87403006A EP 87403006 A EP87403006 A EP 87403006A EP 0277446 A1 EP0277446 A1 EP 0277446A1
Authority
EP
European Patent Office
Prior art keywords
combustion engine
internal combustion
engine according
cylinders
cylinder block
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
EP87403006A
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English (en)
French (fr)
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EP0277446B1 (de
Inventor
Luc Schwab
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen 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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0277446A1 publication Critical patent/EP0277446A1/de
Application granted granted Critical
Publication of EP0277446B1 publication Critical patent/EP0277446B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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 
    • F02F1/02—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
    • F02F2001/104—Cylinders; Cylinder heads  having cooling means for liquid cooling using an open deck, i.e. the water jacket is open at the block top face

Definitions

  • the present invention relates to internal combustion engines comprising several cylinders in line and in particular those of these engines which, in order to be as short as possible, have a small distance between cylinders.
  • the cylinders are formed in a cylinder block surmounted by a cylinder head and these cylinders are cooled by a coolant circuit comprising chambers arranged on either side of the cylinder line and connected by passages in the walls separating two adjacent cylinders.
  • the cylinder block being made of cast metal, the passage formed in the wall separating two cylinders is obtained either by molding from a foundry core, or by machining.
  • neither the passage nor the wall separating two cylinders can be very thin, on the one hand taking into account the size of the core and the shrinkage of the metal during cooling after casting and, on the other hand, as far as the wall is concerned, because of the risks of porosity, especially near the upper part of the cylinders where the mechanical and thermal stresses are maximum.
  • the distance between two adjacent cylinders cannot be practically less than about one centimeter.
  • wall deformations frequently occur in the vicinity of the upper parts of the cylinders, in particular when the engine is heavily loaded, which is the case when it is supercharged.
  • the passage consists either of at least one borehole, necessarily of small diameter and providing only a small flow of liquid and consequently an insufficient heat exchange (document US-A-4 369 739) or in a slot extending perpendicular to the line of cylinders, this slot being milled from the face of the cylinder block directed towards the cylinder head.
  • a slot being located in the vicinity of the upper part of the cylinders, that is to say in the hottest zone and subjected to the highest mechanical stresses, weakens the wall in which it is formed.
  • the risks of deformation imply that the walls disposed on either side of the slot have a thickness of at least four millimeters, which again leads to a distance between two adjacent cylinders of at least one centimeter.
  • slots arranged in this way tend to scale up and are subjected to deposits of particles carried by the coolant, which progressively restrict the passage cross-section for this liquid.
  • the object of the invention is to propose an arrangement in which these various drawbacks are reduced or eliminated and which makes it possible to ensure effective cooling of the cylinders without weakening the partitions which separate them, or to increase the thickness of these partitions.
  • the subject of the invention is an internal combustion engine, comprising a cylinder block of cast metal delimiting several cylinders which are arranged in line and open out on one face of the cylinder block adjacent to a cylinder head itself fixed on the cylinder block, two adjacent cylinders being separated by a partition, the cylinder block also delimiting part of a coolant circuit and in particular chambers located on either side of the line of cylinders and at least one foundry passage formed in said partition and connecting said chambers, characterized in that at least one of these chambers, disposed on one side of the line of cylinders, opens onto said face of the cylinder block by a cavity and there is provided at least one conduit pierced in said partition, above said passage, this conduit extending between said cavity and the chamber located on the other side of the line of cylinders.
  • the two chambers communicate respectively with a part of the coolant circuit formed in the cylinder head by passages of restricted section; - a passage of restricted section is located between the cavity and the adjacent chamber; - A cylinder head gasket being interposed between the two opposite faces of the cylinder block and the cylinder head, this gasket has two calibrated orifices connecting the liquid circuit formed in the cylinder head, respectively to said cavity and to the chamber disposed of the other side of the cylinder line.
  • FIG. 1 a portion of a cylinder block 1 made of cast metal and which delimits several cylinders such as C1, C2 ( Figure 3), arranged in line.
  • This line is designated by the reference L-L ⁇ and corresponds to the trace on the plane of Figure 3, the plane containing the axes of the different cylinders.
  • the block 1 has a face 2 directed towards a cylinder head 3 fixed on the block by usual means.
  • a cylinder head gasket 4 is interposed in a known manner, between the cylinder block and the cylinder head.
  • a part 7, 8 of this cooling circuit is formed in the cylinder head.
  • Two adjacent cylinders are separated by a partition 9 made with a thickness as small as possible and in which the casting came from a passage 10 which makes the two chambers 5 and 6 communicate.
  • a conduit 11 is pierced in the upper part of the partition 9 above the passage 10, this drilling making the upper part of the chamber 6 communicate with a cavity 12 which opens on the face 2 of the cylinder block and communicates with the chamber 5, preferably via an orifice 13 of restricted section.
  • the oblique orientation of the bore 11 is such that it can be machined from the upper side of the cylinder block.
  • the probe may, for example, be of the order of 4 mm.
  • two conduits 11 can be drilled in the partition 10.
  • the upper edge 14 of the passage 10 is oblique and oriented approximately parallel to the bore 11.
  • the second chamber 6 communicates with the part 8 of the coolant circuit formed in the cylinder head via an orifice 15 of restricted section, this orifice like the orifice 13 having come from the foundry in the embodiment of the figures 1 to 3.
  • the cavity 12 into which the chamber 5 opens has a generally cylindrical shape and receives a cup 21 in which a calibrated orifice 22 is formed.
  • the cup 21 can be fitted or screwed into the cavity 12 .
  • the cylinder head gasket 4 also comprises two orifices 23, 24 of restricted section which determine the passage section between the parts of the cooling circuit formed in the cylinder block and in the cylinder head, respectively.
  • a spacer 31 from the foundry is provided in the middle part of the passage 10, so as to reinforce the partition 9 which separates the adjacent cylinders C1, C2.
  • the coolant flows, on the one hand, from the chamber 5 towards the cavity 12 through the orifice 13 or 22 of restricted section and, on the other hand, from the chamber 6 towards the cavity 12 by the bore 11, and towards the circuit 8 by the restricted passage 15 or 24.
  • a circulation of the coolant occurs also in passage 10.
  • the various passages of restricted section are dimensioned so that the pressure drops which they provide entail an optimal distribution of the liquid flow rates in the passage 10 and in the bore 11 and, consequently, a sufficient heat exchange to cool the cylinders correctly.
  • the orifice 22 has a smaller section than that of the orifice 23 and larger than that of the orifice 24.
  • This arrangement offers the following advantages: - it provides effective cooling, as indicated above; -
  • the partition separating the cylinders can be relatively thin and keep a thickness of less than one centimeter, while exhibiting good mechanical strength thanks to the fact that it is full in the vicinity of face 2 and that the bore 11 contributes only slightly to reduce its section. However, it is important to maintain sufficient resistance to the partition near face 2, because it is in this area that the stresses are greatest; -
  • the passages of restricted section and the bore 11 are unlikely to scale up or be clogged with particles because the flow rate of the liquid which circulates therein is relatively large. The same is true for passage 10, in particular thanks to its distance from the hottest zone, close to face 2.

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)
EP87403006A 1987-01-09 1987-12-29 Zylinderblockkühlung für eine Brennkraftmaschine Expired - Lifetime EP0277446B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8700174 1987-01-09
FR8700174A FR2609501B1 (fr) 1987-01-09 1987-01-09 Moteur a combustion interne muni de moyens perfectionnes de refroidissement du bloc-cylindres

Publications (2)

Publication Number Publication Date
EP0277446A1 true EP0277446A1 (de) 1988-08-10
EP0277446B1 EP0277446B1 (de) 1990-10-24

Family

ID=9346784

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87403006A Expired - Lifetime EP0277446B1 (de) 1987-01-09 1987-12-29 Zylinderblockkühlung für eine Brennkraftmaschine

Country Status (5)

Country Link
US (1) US4850312A (de)
EP (1) EP0277446B1 (de)
JP (1) JPS63176648A (de)
DE (1) DE3765771D1 (de)
FR (1) FR2609501B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT2435U1 (de) * 1997-04-09 1998-10-27 Avl List Gmbh Hubkolben-brennkraftmaschine
US6776127B2 (en) 2000-12-21 2004-08-17 Petroliam Nasional Berhad Interbore cooling system
DE10326520B4 (de) * 2003-06-12 2014-06-05 Bayerische Motoren Werke Aktiengesellschaft Kurbelgehäuse für eine Brennkraftmaschine

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3077452B2 (ja) * 1993-06-07 2000-08-14 トヨタ自動車株式会社 内燃機関のシリンダブロック
DE20314367U1 (de) * 2002-09-16 2004-03-11 Perkins Engines Co. Ltd. Zylinderblock für einen Verbrennungsmotor mit einer lokal verdickten Endwand
DE10340157B4 (de) * 2003-09-01 2008-10-02 Audi Ag Vorrichtung zur Medienführung in einem Zylinderkurbelgehäuse
EP1713603A2 (de) * 2003-12-18 2006-10-25 Tenedora Nemak, S.A. de C.V. Verfahren und vorrichtung zur herstellung von festen, dünnwandigen gussteilen
WO2005102560A2 (en) * 2004-04-20 2005-11-03 Tenedora Nemak, S.A. De C.V. Method and apparatus for casting aluminum engine blocks with cooling liquid passage in ultra thin interliner webs
FR2869356B1 (fr) * 2004-04-26 2008-07-11 Renault Sas Conduit de refroidissement moteur
DE102008004082A1 (de) 2008-01-12 2008-09-04 Daimler Ag Kühlanordnung zum Kühlen eines Zylinderkurbelgehäuses und eines Zylinderkopfes einer Verbrennungskraftmaschine
US9470176B2 (en) * 2014-08-01 2016-10-18 Ford Global Technologies, Llc Bore bridge and cylinder cooling
US10371087B2 (en) 2015-08-11 2019-08-06 Exco Engineering Die cast closed deck engine block manufacture

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB809529A (en) * 1957-05-04 1959-02-25 Jaguar Cars Improvements in and relating to the cooling of internal combustion engines
FR1598344A (de) * 1967-12-13 1970-07-06
FR2257788A1 (de) * 1974-01-16 1975-08-08 Peugeot & Renault
WO1980000595A1 (fr) * 1978-09-08 1980-04-03 Bayerische Motoren Werke Ag Culasse de cylindre obtenu par coulee sous pression pour moteurs a combustion interne refroidis a l'eau
US4369739A (en) * 1979-05-07 1983-01-25 Nissan Motor Company, Limited Structure of a cylinder assembly for an internal combustion engine
EP0197365A2 (de) * 1985-04-02 1986-10-15 Halbergerhütte GmbH Vorrichtung zur giesstechnischen Herstellung einer Kühleinrichtung von Stegen zwischen benachbarten Zylindern eines Zylinderblockes sowie entsprechend hergestellter Zylinderblock

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385273A (en) * 1965-09-10 1968-05-28 White Motor Corp Cooling system for internal combustion engine
DE2143734B2 (de) * 1971-09-01 1973-10-04 Daimler-Benz Ag, 7000 Stuttgart Brennkraftmaschine mit einem in den Durchgang fur das Kuhlwasser zwischen Zylinderkopf und Kurbeigehause einge setzten Zwischenrohr
DE2514592C2 (de) * 1975-04-03 1982-10-14 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Einzelzylinderkopf
JPS5252113U (de) * 1975-10-14 1977-04-14
JPS5424845A (en) * 1977-07-22 1979-02-24 Microbial Chem Res Found Novel bio-active peptide and its derivative
DE2904167C2 (de) * 1979-02-03 1982-07-08 Bayerische Motoren Werke AG, 8000 München Im Druckgießverfahren herstellbarer Zylinderkopf für wassergekühlte Brennkraftmaschinen
JPS57198338U (de) * 1981-06-11 1982-12-16
JPS6153445A (ja) * 1984-08-21 1986-03-17 Toyota Motor Corp 内燃機関の冷却構造

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB809529A (en) * 1957-05-04 1959-02-25 Jaguar Cars Improvements in and relating to the cooling of internal combustion engines
FR1598344A (de) * 1967-12-13 1970-07-06
FR2257788A1 (de) * 1974-01-16 1975-08-08 Peugeot & Renault
WO1980000595A1 (fr) * 1978-09-08 1980-04-03 Bayerische Motoren Werke Ag Culasse de cylindre obtenu par coulee sous pression pour moteurs a combustion interne refroidis a l'eau
US4369739A (en) * 1979-05-07 1983-01-25 Nissan Motor Company, Limited Structure of a cylinder assembly for an internal combustion engine
EP0197365A2 (de) * 1985-04-02 1986-10-15 Halbergerhütte GmbH Vorrichtung zur giesstechnischen Herstellung einer Kühleinrichtung von Stegen zwischen benachbarten Zylindern eines Zylinderblockes sowie entsprechend hergestellter Zylinderblock

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 10, no. 216 (M-502)[2272], 29 juillet 1986; & JP-A-61 053 445 (TOYOTA MOTOR CORP.) 17-03-1986 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT2435U1 (de) * 1997-04-09 1998-10-27 Avl List Gmbh Hubkolben-brennkraftmaschine
US6776127B2 (en) 2000-12-21 2004-08-17 Petroliam Nasional Berhad Interbore cooling system
DE10326520B4 (de) * 2003-06-12 2014-06-05 Bayerische Motoren Werke Aktiengesellschaft Kurbelgehäuse für eine Brennkraftmaschine

Also Published As

Publication number Publication date
DE3765771D1 (de) 1990-11-29
EP0277446B1 (de) 1990-10-24
FR2609501B1 (fr) 1991-01-11
US4850312A (en) 1989-07-25
FR2609501A1 (fr) 1988-07-15
JPS63176648A (ja) 1988-07-20

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