EP1884647B1 - Tête de cylindre refroidie par du liquide pour un moteur à combustion interne - Google Patents

Tête de cylindre refroidie par du liquide pour un moteur à combustion interne Download PDF

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Publication number
EP1884647B1
EP1884647B1 EP20070013424 EP07013424A EP1884647B1 EP 1884647 B1 EP1884647 B1 EP 1884647B1 EP 20070013424 EP20070013424 EP 20070013424 EP 07013424 A EP07013424 A EP 07013424A EP 1884647 B1 EP1884647 B1 EP 1884647B1
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EP
European Patent Office
Prior art keywords
cylinder head
flow guide
dome
guide rib
liquid
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
EP20070013424
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German (de)
English (en)
Other versions
EP1884647A3 (fr
EP1884647A2 (fr
Inventor
Peter Ausserlechner
Gerald Winter
Herbert Holzinger
Wolfgang Ritzlmayr
Robert Ehart
Josef Spiel
Robert Auer
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
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Bayerische Motoren Werke AG
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Publication date
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Publication of EP1884647A2 publication Critical patent/EP1884647A2/fr
Publication of EP1884647A3 publication Critical patent/EP1884647A3/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 
    • 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
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder

Definitions

  • the invention relates to a liquid-cooled cylinder head for an internal combustion engine with the features of the preamble of patent claim 1.
  • each cooling liquid space is formed by a single annular space surrounding the dome, which only passes through the gas exchange inlet and gas exchange outlet channels and the valve guides for the gas exchange outlet valve (s) is.
  • the peripheral wall of the annulus has vertical ribs extending toward the mandrel.
  • the drain channel of each annulus empties into a drain collection channel extending along the cylinder head.
  • a liquid-cooled cylinder head for an internal combustion engine for the BMW straight-six diesel engine with the BMW internal designation M 57 is known, which has been used for several years, for example, in the BMW 3 Series and from which the present invention proceeds.
  • the cylinder head is intended for a four-valve internal combustion engine, wherein the cylinder head gas exchange inlet ducts and Gas monauslasskanäle has.
  • the gas exchange outlet ducts like the gas exchange inlet ducts, are arranged in pairs and form a common single exhaust gas outlet duct towards the cylinder head wall.
  • the Gas passiveauslasskanäle are formed by Auslasskanalwanditch that form a gusset inlet side.
  • a dome Adjacent to the gusset, toward the inlet side of the cylinder head, a dome is arranged with a bore in which the fuel injection valve is arranged.
  • the dome and the Auslasskanalwandungen are largely surrounded by a coolant channel, which is acted upon by three inlet bores in a cylinder head parting plane from the crankcase with coolant.
  • the coolant flows through the three coolant inflow openings into the cylinder head, surrounds the exhaust port walls and the area of the valve seat rings in a spectacle shape and continues to flow in the direction of the dome. Starting from the dome, the coolant continues to flow in the direction of the inlet side of the cylinder head and back into the crankcase of the internal combustion engine.
  • liquid-cooled cylinder head Even if the liquid-cooled cylinder head has no disadvantages, it may be that in a further increase in power of the internal combustion engine in the region of the dome forms a hot area.
  • Object of the present invention is to show a measure to achieve even better cooling of the dome.
  • the production of the cylinder head is particularly preferably carried out according to claim 4.
  • the production of the short-circuit opening can gem. Claim 6 without cutting, z. B. with a casting or machining, z. B. done by drilling or milling.
  • inventive design according to claim 7 either for a self-igniting internal combustion engine that works on the diesel principle or for a gasoline engine with spark ignition can be used.
  • Fig. 1 shows a section through a cylinder head 1 perpendicular to its longitudinal axis through a dome 6 for receiving a fuel injection valve in a bore 11.
  • the cylinder head 1 has a coolant channel 2, whose three-dimensional geometry in Fig. 2 is shown. In Fig. 1 a hatched area is hatched.
  • the cylinder head 1 is for a self-igniting internal combustion engine with two Gas constituhereinlass- and two Gas constituauslassventilen provided and has an outlet channel with a first Auslrawkanalwandung 3 and a second Auslasskanalwandung 4.
  • the first and the second outlet channel wall 3, 4 merge in the region of a gas outlet from the cylinder head 1 to a common outlet channel 9.
  • the first and second outlet channel wall 3, 4 form the inlet side, on the side facing the coolant channel 2 with each other a gusset 5. Spaced from the Gusset 5 is arranged in the direction of an inlet side of the cylinder head 1 of the dome 6.
  • the cylinder head 1 Starting from a cylinder head separating plane 1 'facing a crankcase, not shown, the cylinder head 1 has a first inlet opening 2', which is arranged centrally between the first and the second outlet channel wall 3, 4. In this first inflow opening 2 'flows coolant from the crankcase in the cylinder head 1. A coolant flow is in the Fig. 1 to 4 shown schematically with arrows. Subsequently, the coolant continues to flow past the dome 6 in the direction of the intake side of the cylinder head 1 and back into the crankcase, not shown, of the internal combustion engine.
  • Fig. 2 shows a plan view of a portion of a casting core for the coolant channel 2 of the known from the prior art cylinder head 1.
  • a second and a third inflow opening 2 ", 2"' for the coolant channel 2 are respectively provided geodetically below the first and the second outlet channel walls 3, 4.
  • the coolant is pumped by a coolant pump, not shown, through the three inflow openings 2 ', 2 ", 2''' in the cylinder head 1, wherein the area radially around valve seat rings, not shown, as well as the radially outer region of the first and second outlet channel wall 3, 4. From there flows the coolant, as previously described in the direction of Dom 6 and then on towards the inlet side of the cylinder head. 1
  • a hot region 10 is formed in the cylinder head 1 known from the prior art in the lower region of the dome 6.
  • Fig. 3 shows the same cut as Fig. 1 .
  • Fig. 4 shows the same view of the portion of the casting core for the coolant channel 2 as Fig. 2 ,
  • Fig. 3 is an inventively formed on the gusset region 5 first Strömungsleitrippe 7 facing the dome 6 shown.
  • a second flow guide rib 8 is formed on the dome 6, which extends in the direction of the first flow guide rib 7.
  • a flow gap with a width between 2 and 10 mm is formed between the second flow guide rib 8 and the first flow guide rib 7 or the first and the second outlet passage walls 3, 4.
  • relatively little coolant flows geodetically upwards into the coolant channel 2, so that the critical foot region of the dome 6 flows around more strongly with coolant and thus is better cooled.
  • a preferred thickness of the first and the second flow guide rib 7, 8 is between 3 and 10 mm.
  • the first and the second flow guide ribs 7, 8 are formed integrally with the cylinder head 1 in the same material.
  • the flow guide rib 7 and / or 8 can also be designed as an insert part or a cast-in component.
  • either a fuel injection valve and / or an ignition device can be arranged.
  • the second Strömungsleitrippe 8 may also be designed such that in the flow direction of the coolant, behind the gap between the Strömungsleitrippen 7, 8, no undercut is present, d. H. a wall thickness of the dome 6 behind the gap, geodetically above the second flow guide rib 8 is substantially constant.
  • Fig. 4 can be seen how the improved flow of the dome 6 is further improved with coolant. While in the prior art the valve seat rings of the gas exchange outlet valves are gland-shaped radially surrounded, according to the invention a short circuit flow between the first inflow opening 2 'and the second and the third inflow opening 2 ", 2'" avoided. Otherwise, the same applies as the execution too Fig. 2 ,
  • Fig. 5 shows the top view of a three-dimensional cutout of the cylinder head 1 in the region of the first and the second outlet channel wall 3, 4.
  • Darg President is the gusset region 5, to which the first flow guide rib 7 is formed.
  • the dome 6 is arranged in the direction of the inlet side.
  • the second flow guide rib 8 which extends in the direction of the first flow guide rib 7.
  • Fig. 6 shows a section through an inventively designed cylinder head 1 for a second embodiment in a first manufacturing variant. Shown is the region of the first flow guide rib 7 with the coolant channel 2 surrounding the first flow guide rib 7.
  • the first flow guide rib 7 has a short-circuit opening 12 through which the coolant flows. A flow direction of the coolant is shown schematically by arrows. Due to the enlarged surface of the first flow guide rib 7, the cooling of the temperature-critical region is further improved.
  • the short-circuit opening 12 during the casting process of the cylinder head ie non-cutting, mitgegossen
  • Fig. 7 shows the same section through the inventively designed cylinder head as Fig. 6 , but for a second production variant.
  • the short-circuit opening 12 is made by drilling, ie machining. A milled short-circuit opening 12 can also be produced.
  • a first flow guide rib 7 in the gusset 5 between the outlet channels and a second flow guide 8 on the dome 6 is proposed.
  • the two branches are closed to the lateral crossings 2 ", 2 ''' Flow guide rib 8 am Dom 6 is routed between the exhaust valves and the Dom 6.
  • the first Strömungsleitrippe 7 between the exhaust ports is made very thin, on the one hand to influence the stiffness of the cylinder head 1 only slightly and not to disturb the flow of coolant on the upper deck of the coolant jacket on the other hand.
  • the second flow guide rib 8 on the dome 6 and the first flow guide rib 7 between the outlet channels are separated from each other by a thin gap. This allows a reduced flow of the coolant from bottom to top.
  • the second flow guide rib 8 on the dome 6 is not connected to the outlet channels, so that channel cracks can be avoided.
  • the coolant flow of the central passage 2 ' can be directed as desired and a component temperature reduction can be achieved, which leads to a substantial increase in fatigue strength.
  • the production of the casting core is facilitated by the division of the flow guide ribs 7, 8.
  • the first flow guide rib 7, for example, mitgeformt between the outlet channels with a lateral slide.
  • the second flow guide rib 8 on the dome 6 can be produced, for example, by an insert in the region of the inlet channels or by a slide which is integrated in the upper or lower half of the core tool.
  • the width and the shape of the two Strömungsleitrippen 7, 8 can also be easily adapted.

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 (7)

  1. Culasse de cylindres (1) refroidie par du liquide d'un moteur à combustion interne comportant une première et une seconde paroi de canal d'échappement (3, 4) voisines l'une de l'autre, qui se rejoignent par segments et sont entourées par un canal de liquide de refroidissement (2) pour deux soupapes d'échange de gaz d'échappement, et
    un dôme (6), au moins en partie entouré par le canal de liquide de refroidissement (2), est écarté d'une zone de pendentif (5) formée du côté de l'entrée par les parois (3, 4) de canal d'échappement, ce dôme étant prévu pour un composant du moteur à combustion interne installé très largement en position centrale par rapport à la chambre de combustion couverte par la culasse de cylindres (1),
    le canal de liquide de refroidissement (2) comporte un premier orifice d'entrée (2') installé très largement au milieu entre la première et la seconde paroi de canal d'échappement (3, 4) et un second et un troisième orifice d'entrée (2", 2'"), diamétralement écartés du premier orifice d'entrée (2') dans le plan (1') de la culasse de cylindres, et s'étendant très largement à partir du premier orifice d'entrée (2') sur la chambre de combustion et entre la première et la seconde paroi de canal d'échappement (3, 4), en direction du dôme (6), et
    partant du second et troisième orifice d'entrée (2", 2'"), en s'étendant très largement sur la chambre de combustion et radialement autour de la première et de la seconde paroi de canal d'échappement (3, 4) en direction du dôme (6), et
    partant du dôme (6), en direction du côté d'entrée de la culasse de cylindres (1),
    caractérisée en ce qu'
    une première lèvre de guidage de fluide (7) s'étendant en direction du dôme (6) est prévue dans la zone de pendentif (5), et une seconde lèvre de guidage de fluide (8), correspondant à la première lèvre de guidage de fluide (7) est prévue sur le dôme (6).
  2. Culasse de cylindres à refroidissement par liquide selon la revendication 1,
    caractérisée en ce que
    la largeur libre entre la première lèvre de guidage de fluide (7) et la seconde lèvre de guidage de fluide (8) ainsi que la première et la seconde paroi de canal de sortie (3, 4), est comprise entre 2 mm et 10 mm.
  3. Culasse de cylindres à refroidissement par liquide selon la revendication 1 ou 2,
    caractérisée en ce que
    l'épaisseur de la première et de la seconde lèvre de guidage de fluide (7, 8) est comprise entre 3 mm et 10 mm.
  4. Culasse de cylindres à refroidissement par liquide selon la revendication 1 à 3,
    caractérisée en ce que
    la première et la seconde lèvre de guidage de fluide (7, 8) sont réalisées en une seule pièce avec la culasse de cylindres (1) et dans la même matière.
  5. Culasse de cylindres à refroidissement par liquide selon la revendication 1 à 4,
    caractérisée en ce que
    la première et/ou la seconde lèvre de guidage de fluide (7, 8) comportent un orifice de court-circuit (12).
  6. Culasse de cylindres à refroidissement par liquide selon la revendication 1 à 5,
    caractérisée en ce que
    l'orifice de court-circuit (12) est réalisé par un usinage sans ou avec enlèvement de copeaux .
  7. Culasse de cylindres à refroidissement par liquide selon la revendication 1 à 6,
    caractérisée en ce que
    le composant du moteur est un injecteur de carburant et/ou une installation d'allumage.
EP20070013424 2006-08-04 2007-07-10 Tête de cylindre refroidie par du liquide pour un moteur à combustion interne Active EP1884647B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610036422 DE102006036422A1 (de) 2006-08-04 2006-08-04 Flüssigkeitsgekühlter Zylinderkopf für eine Brennkraftmaschine

Publications (3)

Publication Number Publication Date
EP1884647A2 EP1884647A2 (fr) 2008-02-06
EP1884647A3 EP1884647A3 (fr) 2008-05-07
EP1884647B1 true EP1884647B1 (fr) 2009-04-29

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EP20070013424 Active EP1884647B1 (fr) 2006-08-04 2007-07-10 Tête de cylindre refroidie par du liquide pour un moteur à combustion interne

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EP (1) EP1884647B1 (fr)
DE (2) DE102006036422A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8869758B1 (en) 2013-10-09 2014-10-28 Ford Global Technologies, Llc Exhaust valve bridge and cylinder cooling

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007012907A1 (de) 2007-03-19 2008-09-25 Bayerische Motoren Werke Aktiengesellschaft Zylinderkopf für eine flüssigkeitsgekühlte Brennkraftmaschine
DE102007048021A1 (de) 2007-10-06 2009-04-09 Bayerische Motoren Werke Aktiengesellschaft Flüssigkeitsgekühlter Zylinderkopf für eine Brennkraftmaschine
DE102008014971A1 (de) 2008-03-19 2009-09-24 Bayerische Motoren Werke Aktiengesellschaft Flüssigkeitsgekühlter Zylinderkopf für eine Brennkraftmaschine
AT506473B1 (de) 2009-04-23 2010-12-15 Avl List Gmbh Zylinderkopf einer brennkraftmaschine
DE102010036392B4 (de) * 2010-07-14 2021-10-07 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Flüssigkeitsgekühlter Zylinderkopf für eine Brennkraftmaschine
DE102010041105B4 (de) 2010-09-21 2024-05-23 Bayerische Motoren Werke Aktiengesellschaft Kühlmittelmantel für einen flüssigkeitsgekühlten Zylinderkopf
WO2013191529A1 (fr) * 2012-06-18 2013-12-27 Perusahaan Otomobil Nasional Sdn Bhd Procédé et appareil pour refroidir une culasse de cylindre
CN103352768B (zh) * 2013-07-23 2016-06-22 安徽江淮汽车股份有限公司 一种发动机气缸盖水套
AT517127B1 (de) * 2015-05-07 2019-12-15 Avl List Gmbh Zylinderkopf für eine brennkraftmaschine
DE102015222859A1 (de) * 2015-11-19 2017-05-24 ŠKODA AUTO a.s. Zylinderkopf einer Brennkraftmaschine mit integriertem Abgaskrümmer und Kühlmantel

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DE1014790B (de) * 1954-06-01 1957-08-29 Ricardo & Co Engineers Abnehmbarer Zylinderkopf fuer fluessigkeitsgekuehlte Dieselmaschinen
US3818878A (en) * 1973-04-23 1974-06-25 Gen Motors Corp Improved cylinder head cooling
DE2437965C2 (de) * 1974-08-07 1982-09-16 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Flüssigkeitsgekühlter Zylinderkopf
DE2452999C2 (de) * 1974-11-08 1982-09-16 Motoren-Werke Mannheim AG vorm. Benz Abt. stationärer Motorenbau, 6800 Mannheim Zylinderkopf für eine wassergekühlte Dieselmaschine
DE3516453A1 (de) * 1985-05-08 1986-11-13 Audi AG, 8070 Ingolstadt Fluessigkeitsgekuehlter zylinderkopf
JP2941124B2 (ja) * 1992-08-24 1999-08-25 ダイハツ工業株式会社 四弁式内燃機関におけるシリンダヘッドの構造
DE19802060A1 (de) * 1998-01-21 1999-07-22 Bayerische Motoren Werke Ag Flüssigkeitsgekühlter Zylinderkopf einer mehrzylindrigen, je Zylinder mehrventiligen Brennkraftmaschine
FR2786815B1 (fr) * 1998-12-04 2001-01-05 Renault Sport Culasses de moteur a combustion interne refroidie par liquide
AT5301U1 (de) * 2001-01-29 2002-05-27 Avl List Gmbh Zylinderkopf für mehrere zylinder
AT6654U1 (de) * 2002-10-31 2004-01-26 Avl List Gmbh Zylinderkopf für eine flüssigkeitsgekühlte mehrzylinder-brennkraftmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8869758B1 (en) 2013-10-09 2014-10-28 Ford Global Technologies, Llc Exhaust valve bridge and cylinder cooling

Also Published As

Publication number Publication date
EP1884647A3 (fr) 2008-05-07
DE502007000660D1 (de) 2009-06-10
DE102006036422A1 (de) 2008-02-21
EP1884647A2 (fr) 2008-02-06

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