EP1972772B1 - Culasse pour un moteur à combustion interne refroidi par liquide - Google Patents

Culasse pour un moteur à combustion interne refroidi par liquide Download PDF

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Publication number
EP1972772B1
EP1972772B1 EP08002503.4A EP08002503A EP1972772B1 EP 1972772 B1 EP1972772 B1 EP 1972772B1 EP 08002503 A EP08002503 A EP 08002503A EP 1972772 B1 EP1972772 B1 EP 1972772B1
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EP
European Patent Office
Prior art keywords
cylinder head
coolant
gas
duct
exchange
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.)
Active
Application number
EP08002503.4A
Other languages
German (de)
English (en)
Other versions
EP1972772A3 (fr
EP1972772A2 (fr
Inventor
Frank Kreil
Frank Dr. Ruetten
Fabian Dr. Kock
Joseph . Hadaller
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1972772A2 publication Critical patent/EP1972772A2/fr
Publication of EP1972772A3 publication Critical patent/EP1972772A3/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 
    • F02F1/24—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 

Definitions

  • the invention relates to a cylinder head for a liquid-cooled internal combustion engine with the features of the preamble of patent claim 1.
  • a liquid-cooled cylinder head for an internal combustion engine is known.
  • a separate coolant jacket is provided for each combustion chamber. With this first the combustion chamber roof and then the center arranged between the four gas exchange valves injector or the centrally arranged ignition device is cooled.
  • a liquid-cooled internal combustion engine with a cylinder head known.
  • the cylinder head has two inlet and two outlet channel openings per cylinder, which are arranged substantially symmetrically with respect to at least one transverse plane of the cylinder head.
  • Adjacent to a combustion chamber roof is a first cooling space to which, in turn, a second cooling space partially adjoins, wherein the first and the second cooling space are flow-connected to one another via at least one flow connection per cylinder.
  • the invention is based on the not yet published German patent application DE 10 2006 036 422 out.
  • a liquid-cooled cylinder head for an internal combustion engine is described, with a first and a second, adjacent to each other, partially merging into each other, surrounded by a coolant passage Auslasskanalwandung for two Auslassgas promptventile.
  • an at least partially surrounded by a coolant channel dome is arranged. This dome is for a largely centered to the combustion chamber covered by the cylinder head can be arranged engine component such.
  • the coolant channel has a first, substantially centrally disposed between the first and the second Auslasskanalwandung inlet and a second and a third of the first inflow opening in the cylinder head longitudinal direction having spaced inflow opening in a cylinder head separation plane.
  • the coolant channel extends largely over the combustion chamber and between the first and the second outlet duct wall in the direction of the dome.
  • the coolant channel extends largely over the combustion chamber and radially around the first and the second outlet channel wall in the direction of the dome and starting from the dome in the direction of the inlet side of the cylinder head.
  • a first flow guide rib extending in the direction of the dome is arranged in a gusset region of the coolant channel.
  • the generic design of the coolant channel in a cylinder head of an internal combustion engine has excellent cooling properties for the Dom Schl.
  • Object of the present invention is to show a measure by which the outlet side of the cylinder head can be even more uniform and thus better cooled.
  • the gas exchange outlet ducts and the ignition and / or fuel injection device are cooled particularly well.
  • Fig. 1 shows the top view of a portion of a three-dimensionally illustrated casting core of an inventively shaped coolant channel 5.
  • the coolant channel 5 is provided for a multi-cylinder series internal combustion engine, but only a portion of the coolant channel 5 is shown for about two and a half cylinders.
  • the multi-cylinder cylinder head has a longitudinal axis LA, which is symbolically represented by an arrow. On one side of the longitudinal axis LA is an inlet side 3 and on the other hand the longitudinal axis LA is an outlet side 1 of the cylinder head.
  • Each cylinder has in the illustrated embodiment in the inlet side 3, two gas exchange inlet ducts 4, 4 'and in the outlet side 1, two gas exchange outlet ducts 2, 2.
  • the coolant channel 5 for each cylinder two inlet openings 6, 6 ' is promoted by the coolant during operation of the internal combustion engine from a crankcase, not shown in the cylinder head.
  • the flow direction of the coolant is shown schematically by arrows.
  • the inflow openings 6, 6 ' are arranged substantially below the gas exchange outlet channels 2, 2.
  • the coolant flows geodetically upwards into the inflow cross section of the coolant channel 5 and further largely horizontally first away from the inlet side 3 and further arcuately back towards the outlet side 1 to merge into a common coolant channel and further into a web area between the gas exchange outlet channels 2, 2 'to open. Proceeding from the web region, the coolant in the coolant channel 5 continues to flow upward geodetically and surrounds the gas exchange outlet channels 2, 2 and a region arranged largely centrically to a cylinder, not shown, in which an ignition and / or a fuel injection unit can be arranged. Starting from this area, the coolant continues to flow in the direction of inlet side 3 of the cylinder head.
  • the coolant channel 5 has on both sides of the gas exchange outlet channels 2, 2 'a further connection 7, 7 to the crankcase, which can simultaneously serve as a vent hole for the crankcase.
  • a core support 8, 8 ' is arranged for fixing the position of the casting core during the casting process of the cylinder head.
  • the coolant jacket 5 is provided for a 6-cylinder internal combustion engine.
  • any other internal combustion engine with any number of cylinders can be equipped with the inventively designed coolant channel 5.
  • Fig. 2 in which the same reference numbers apply to the same components as in Fig. 1 , is also a plan view of the three-dimensional darg Whyen casting core of the coolant channel 5 shown, but with improved view of the inlet openings 6, 6 '.
  • the flow direction of the coolant is again shown schematically by arrows.
  • Out Fig. 2 It can be seen how the coolant, which enters the cylinder head through the inlet openings 6, 6 ', first flows "M-shaped" away from the inlet side 3 of the cylinder head and then back to the inlet side 3. In the middle, in the web region between gas exchange outlet channels 2, 2, the coolant channel 5 is brought together again to form a single coolant channel 5. After this channel merge, the coolant is then conveyed geodetically upwards, where it flows around the gas exchange outlet channels 2, 2 'and the region of the ignition and / or fuel injection device.
  • Fig. 3 shows a diagram of a temperature distribution of Gas batauslassventilstegtemperaturen for a 6-cylinder internal combustion engine.
  • the temperatures are derived from a simulation validated by measurements.
  • the gas exchange outlet valve temperature is plotted in degrees Celsius above the Y axis.
  • Six individual measuring points in the cylinder head are shown above the X axis.
  • Two graphs 9 and 10 show the temperature profile over the length of the cylinder head, for known from the prior art cooling concepts.
  • a third graph 11 shows the temperature profile for a cylinder head with a coolant channel 5 formed according to the invention. It can clearly be seen that the temperature difference from the first to the sixth cylinder with the inventive design of the coolant channel 5 is only about 10 ° C., while the temperature difference for the cylinder conventional cooling concepts, graphs 9 and 10, up to 25 ° C.
  • the proposal according to the invention eliminates the abovementioned disadvantages without sustainably influencing the pressure loss in the cooling system.

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)

Claims (4)

  1. Culasse destinée à un moteur à combustion interne refroidi par liquide comprenant deux canaux d'échappement d'échange de gaz (2, 2') situés côté échappement (1) de la culasse et de canaux d'admission d'échange de gaz (4, 4') situés côté admission (3) de la culasse, qui sont respectivement montés le long de l'axe longitudinal (LA) de la culasse, ainsi qu'un dispositif d'allumage et/ou d'injection de carburant pouvant être monté entre les canaux d'échange de gaz (2, 2', 4, 4'), un canal de liquide de refroidissement (5) situé dans la culasse comprenant deux ouvertures d'admission du liquide de refroidissement (6, 6') ouvertes côté échappement vers un boîtier moteur monté sous la culasse, de façon géodésique qui sont respectivement montés de façon essentiellement géodésique au-dessous d'un canal d'échappement d'échange de gaz (2, 2'), le canal de liquide de refroidissement (5) s'étendant entre les canaux d'échappement d'échange de gaz (2, 2') en direction du dispositif d'allumage et/ou d'injection de carburant, et de façon géodésique vers le haut,
    caractérisée en ce que
    le canal de liquide de refroidissement (5) s'étend, à partir des ouvertures d'admission (6, 6'), de part et d'autre, jusqu'à une hauteur de canal, puis, en forme d'arc, tout d'abord en s'éloignant du côté admission (3) puis vers le côté admission (3) et ensuite en se raccordant en un canal de liquide de refroidissement (5) entre les canaux d'échappement d'échange de gaz (2, 2').
  2. Culasse conforme à la revendication 1,
    caractérisée en ce que
    le canal de liquide de refroidissement (5) comporte, dans la direction longitudinale de la culasse, à côté d'au moins un canal d'échappement d'échange de gaz (2, 2') au moins un autre raccord de circulation du liquide de refroidissement (7, 7') avec un canal de liquide de refroidissement situé dans le carter moteur, et, de façon géodésique au-dessus du raccord (7, 7), le canal de liquide de refroidissement s'oriente, en direction d'une barrette, entre une soupape d'admission d'échange de gaz et une soupape d'échappement d'échange de gaz.
  3. Culasse conforme à la revendication 1 ou 2,
    caractérisée en ce que
    le canal de liquide de refroidissement (5) entoure les canaux d'échappement d'échange de gaz (2, 2') de façon géodésique au-dessus de sa zone d'admission en forme de M.
  4. Culasse conforme à l'une des revendications 1 à 3,
    caractérisée en ce que
    le canal de liquide de refroidissement (5) entoure le dispositif d'allumage et/ou d'injection de carburant.
EP08002503.4A 2007-03-19 2008-02-12 Culasse pour un moteur à combustion interne refroidi par liquide Active EP1972772B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007012907A DE102007012907A1 (de) 2007-03-19 2007-03-19 Zylinderkopf für eine flüssigkeitsgekühlte Brennkraftmaschine

Publications (3)

Publication Number Publication Date
EP1972772A2 EP1972772A2 (fr) 2008-09-24
EP1972772A3 EP1972772A3 (fr) 2014-04-09
EP1972772B1 true EP1972772B1 (fr) 2017-12-27

Family

ID=39616517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08002503.4A Active EP1972772B1 (fr) 2007-03-19 2008-02-12 Culasse pour un moteur à combustion interne refroidi par liquide

Country Status (2)

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EP (1) EP1972772B1 (fr)
DE (1) DE102007012907A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013191529A1 (fr) * 2012-06-18 2013-12-27 Perusahaan Otomobil Nasional Sdn Bhd Procédé et appareil pour refroidir une culasse de cylindre
US8869758B1 (en) 2013-10-09 2014-10-28 Ford Global Technologies, Llc Exhaust valve bridge and cylinder cooling
DE102017109185A1 (de) 2017-04-28 2018-10-31 Volkswagen Aktiengesellschaft Zylinderkopfgehäuse sowie Verfahren zur Herstellung eines Zylinderkopfgehäuses und Gießkern
DE102020111055B3 (de) 2020-04-23 2021-07-29 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Zylinderkopf mit einer Kühlkanalstruktur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1294096B (de) * 1966-12-29 1969-04-30 Daimler Benz Ag Fluessigkeitsgekuehlter Zylinderkopf einer Brennkraftmaschine
DE3516453A1 (de) * 1985-05-08 1986-11-13 Audi AG, 8070 Ingolstadt Fluessigkeitsgekuehlter zylinderkopf
JPH0833144B2 (ja) * 1987-04-15 1996-03-29 本田技研工業株式会社 内燃機関
DE10048582B4 (de) * 2000-09-30 2013-06-06 Volkswagen Ag Flüssigkeitsgekühlter Zylinderkopf für eine Brennkraftmaschine
DE10237664A1 (de) * 2002-08-16 2004-02-19 Dr.Ing.H.C. F. Porsche Ag Zylinderkopf für eine wassergekühlte mehrzylindrige Brennkraftmaschine
WO2005042955A2 (fr) * 2003-11-03 2005-05-12 Avl List Gmbh Moteur a combustion interne
DE102006036422A1 (de) 2006-08-04 2008-02-21 Bayerische Motoren Werke Ag Flüssigkeitsgekühlter Zylinderkopf für eine Brennkraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102007012907A1 (de) 2008-09-25
EP1972772A3 (fr) 2014-04-09
EP1972772A2 (fr) 2008-09-24

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