EP0774577B1 - Culasse à refroidissement liquide pour moteur à combustion interne multicylindre - Google Patents

Culasse à refroidissement liquide pour moteur à combustion interne multicylindre Download PDF

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Publication number
EP0774577B1
EP0774577B1 EP96115354A EP96115354A EP0774577B1 EP 0774577 B1 EP0774577 B1 EP 0774577B1 EP 96115354 A EP96115354 A EP 96115354A EP 96115354 A EP96115354 A EP 96115354A EP 0774577 B1 EP0774577 B1 EP 0774577B1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
rib
coolant
coolant chamber
chamber
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.)
Expired - Lifetime
Application number
EP96115354A
Other languages
German (de)
English (en)
Other versions
EP0774577A1 (fr
Inventor
Michael Dohn
Erhard Rau
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.)
Daimler Benz AG
Original Assignee
Daimler Benz 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 Daimler Benz AG filed Critical Daimler Benz AG
Publication of EP0774577A1 publication Critical patent/EP0774577A1/fr
Application granted granted Critical
Publication of EP0774577B1 publication Critical patent/EP0774577B1/fr
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 
    • F02F1/24—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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1812—Number of cylinders three
    • 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
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis

Definitions

  • the invention relates to a liquid-cooled cylinder head for a multi-cylinder internal combustion engine according to that Preamble of main claim 1.
  • a generic cylinder head is one Internal combustion engine known that one between outer walls, a cylinder head base and a cylinder head cover, Has cooling water space, which in the direction of a longitudinal axis the cooling water flows through the cylinder head. Which does ________ mean, that the cooling effect decreases continuously in the longitudinal direction of the cylinder head. This temperature gradient in the cylinder head longitudinal direction leads to an increasing load on the cylinder head in this Direction.
  • a rib is formed on the cylinder head cover, the protrudes into the cooling water chamber in the direction of the cylinder head base and in the cylinder head cross-axis direction between two combustion chambers is arranged. Through the rib, this is in the cylinder head longitudinal axis direction flowing cooling water towards the cylinder head floor in a rather less temperature-stressed Redirected area between two combustion chambers.
  • An advantage of the liquid-cooled cylinder head according to the invention lies in the improved cooling of the cylinder head base in the individual cooling water chamber sections each assigned to a combustion chamber.
  • the molded on the cylinder head cover Ribs form guiding elements through which the flow of cooling water is deflected in the direction of the cylinder head base.
  • the Cooling water bounces between the inlet and outlet channels in the area the highest combustion chamber temperatures on the cylinder head floor on.
  • the contact of the cooling water flow to the cylinder head floor is improved and thereby increases the heat transfer from temperature-stressed Cylinder head floor for cooling water.
  • the rib reduces the flow cross-section, what with an increase in flow velocity is connected at this point and consequently the cooling effect the endangered areas on the cylinder head floor again increased.
  • the embodiment of the invention according to claim 2 enables one targeted cooling of the between the valve channels central area of the combustion chamber that is subject to extremely high temperatures Cylinder head bottom section.
  • the embodiment of the invention according to claims 2 and 5 enables a simple manufacture of the cylinder head.
  • Through the symmetrical formation and the trapezoidal shape of the rib can be a simple manufacture of a casting core to produce the one-piece cylinder head designed as a housing are made possible. This is advantageously supported in that the Ribs evenly spaced towards one another Longitudinal center plane of the combustion chamber are arranged distributed. Further allows the trapezoidal shape of the rib to optimize the Flow resistance.
  • the ribs according to claims 3 and 4 advantageously form Guide elements that influence the flow direction of the cooling water, by the cooling water flow flowing through the cooling water space strikes the lateral surface of the rib in the transverse direction and is directed in the direction of the cylinder head base.
  • a cylinder head 1 for a multi-cylinder, not shown here Internal combustion engine consists of a one-piece casting with a cylinder head base 2 and up from this up to a cover parting level 3, for supporting a cylinder head cover, laxative longitudinal outer walls 4,5 and front External walls 6.7.
  • Control room 10 is divided.
  • the cylinder head base 2 has a for each cylinder Recess designed combustion chamber 11, which has two orifices 12, 13 per cylinder and two more in the Combustion chamber 11 leading openings 14, 15 of chambers 16, 17 for Inclusion of spark plugs, injection nozzles or the like.
  • From Valve channels 18, 19 extend from the orifices 12, 13, which the cooling water chamber 9 up to the longitudinal outer walls 4, 5 enforce.
  • the from the mouth opening 12 to the outer wall 4 laxative valve channel 18 forms the inlet channel and valve channel leading from the mouth opening 13 to the outer wall 5 19 forms the outlet channel.
  • the V-shaped to each other Chambers 16, 17 pass through the cooling water chamber 9 in the direction of Cylinder head cover 8.
  • Inlet openings 20, 22 flow cooling water into the cooling water space 9 a.
  • the cooling water flowing in through the inlet opening 20 flows through the cooling water chamber 9 approximately in the direction of a transverse axis 21 of the cylinder head 1.
  • the cooling water then flows by a on the longitudinal outer wall 4 of the cylinder head 1 arranged, not shown outlet opening on the side of the inlet duct 18.
  • a rib 23 is formed, which in the direction of the cylinder head base 2, freely hanging essentially transversely protrudes into the cooling water chamber 9 for the cooling water flow.
  • the Cooling water hits the rib 23 and is targeted in the direction of the cylinder head base 2 in the highly temperature-stressed
  • the area between inlet 18 and outlet channel 19 is deflected.
  • the cooling water chamber 9 is divided into the same cooling water chamber sections 24, each assigned to one of the combustion chambers 11 are. Between the individual cooling water sections 24 of the cylinders extend from the cylinder head base 2 to Cylinder head cover 8 reaching Z-shaped retaining walls 25.
  • the cylinder head cover 8 extends from the front outer walls 6, 7 over the entire width of the cylinder head 1.
  • each cooling water space section 24 associated with the rib 23 which in Cooling water chamber 9 in the direction of a longitudinal median plane 26 of the Combustion chamber 11 is arranged.
  • the rib 23 is approximately symmetrical centrally in the extension of the longitudinal center plane 26 of the combustion chamber 11 arranged on the cylinder head cover 8.
  • the height 27 of the Rib 23 corresponds to at least half the height 28 of the cooling water space 9
  • the length 29 of the rib 23 corresponds at least to that half length 30 of the extending in the direction of the longitudinal central axis 31
  • Cooling water space section 24 and the width 32 of the Rib 23 corresponds to at least half the length 33 of the in Transverse direction 21 extending cooling water chamber section 24.
  • Die Rib 23 has a trapezoidal shape, the short edge 34 hanging freely protrudes into the cooling water chamber 9, whereby a targeted Part of the cooling water flow in the direction of the cylinder head base 2 is reached. This is an improved Cooling of partial areas of the cylinder head base 2 without substantial increase in flow resistance possible.

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 (5)

  1. Culasse à refroidissement par liquide destinée à un moteur à combustion interne multicylindres, comprenant une chambre d'eau de refroidissement, qui est délimitée par des parois extérieures, une paroi supérieure de culasse agencée à distance au-dessus de cette chambre, et un fond de culasse, qui comprend pour chaque cylindre une chambre de combustion, la culasse comprenant par ailleurs au moins un élément de guidage d'écoulement qui s'étend dans la chambre d'eau de refroidissement entre la paroi supérieure de culasse et le fond de culasse, et est réalisé en tant que nervure formée par moulage sur la paroi supérieure de culasse et s'engageant dans la chambre d'eau de refroidissement en y faisant librement saillie, sensiblement transversalement à la direction d'écoulement de l'eau de refroidissement en direction du fond de culasse,
    caractérisée en ce que la chambre d'eau de refroidissement (9) se divise en tronçons de chambre d'eau de refroidissement (24), qui sont traversés par l'écoulement approximativement dans la direction d'un axe transversal (21) de la culasse (1), une nervure (23) étant associée à chaque tronçon de chambre d'eau de refroidissement (24), cette nervure étant disposée dans la chambre d'eau de refroidissement (9) dans la direction d'un plan médian longitudinal (26) de la chambre de combustion (11), et déviant l'eau de refroidissement en direction du fond de culasse (2) dans une zone entre le canal d'admission (18) et le canal d'échappement (19).
  2. Culasse à refroidissement par liquide selon la revendication 1, caractérisée en ce que la nervure (23) est disposée environ symétriquement de manière centrée en prolongement du plan médian longitudinal (26) de la chambre de combustion (11).
  3. Culasse à refroidissement par liquide selon la revendication 1 ou 2, caractérisée en ce que la hauteur (27) de la nervure (23) correspond au moins à la moitié de la hauteur (28) de la chambre d'eau de refroidissement (9).
  4. Culasse à refroidissement par liquide selon l'une des revendications précédentes, caractérisée en ce que la longueur (29) de la nervure (23) correspond au moins à la moitié de la longueur (30) du tronçon de chambre d'eau de refroidissement (24) s'étendant dans la direction de l'axe médian longitudinal (31).
  5. Culasse à refroidissement par liquide selon l'une des revendications précédentes, caractérisée en ce que la nervure (23) présente une forme de trapèze dont la petite base (34) s'engage dans la chambre d'eau de refroidissement (9) en y faisant librement saillie.
EP96115354A 1995-11-15 1996-09-25 Culasse à refroidissement liquide pour moteur à combustion interne multicylindre Expired - Lifetime EP0774577B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19542494A DE19542494C1 (de) 1995-11-15 1995-11-15 Flüssigkeitsgekühlter Zylinderkopf für eine mehrzylindrige Brennkraftmaschine
DE19542494 1995-11-15

Publications (2)

Publication Number Publication Date
EP0774577A1 EP0774577A1 (fr) 1997-05-21
EP0774577B1 true EP0774577B1 (fr) 1998-12-09

Family

ID=7777471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115354A Expired - Lifetime EP0774577B1 (fr) 1995-11-15 1996-09-25 Culasse à refroidissement liquide pour moteur à combustion interne multicylindre

Country Status (4)

Country Link
US (1) US5799627A (fr)
EP (1) EP0774577B1 (fr)
DE (2) DE19542494C1 (fr)
ES (1) ES2127598T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004005749B4 (de) * 2004-02-05 2014-01-02 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Kühlflüssigkeitsummantelter Zylinderkopf mit optimiertem Kühlflüssigkeitsraum

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DE59708692D1 (de) * 1996-07-06 2002-12-19 Volkswagen Ag Zylinderkopf für eine Brennkraftmaschine
JPH10288081A (ja) * 1997-04-12 1998-10-27 Yamaha Motor Co Ltd 筒内燃料噴射式エンジンにおける燃料噴射弁周りの冷却構造
FR2770585B1 (fr) * 1997-11-06 2000-01-14 Peugeot Moteur a combustion interne a injection directe comportant des moyens de refroidissement des injecteurs
JP2000186615A (ja) * 1998-12-18 2000-07-04 Nissan Motor Co Ltd 直噴火花点火式内燃機関
DE19937122C1 (de) * 1999-08-06 2000-10-26 Daimler Chrysler Ag Flüssigkeitsgekühlter Zylinderkopf
DE19943003C1 (de) * 1999-09-09 2000-11-09 Porsche Ag Zylinderkopf für eine wassergekühlte Brennkraftmaschine
DE19943001C1 (de) 1999-09-09 2000-10-26 Porsche Ag Zylinderkopf für eine wassergekühlte Brennkraftmaschine
US6363893B1 (en) 2001-04-03 2002-04-02 Honda Giken Kogyo Kabushiki Kaisha Water jacket for multi-cylinder internal combustion engine
JP3700836B2 (ja) 2001-05-17 2005-09-28 本田技研工業株式会社 内燃機関のシリンダヘッドの冷却構造
DE10251360B4 (de) * 2002-11-05 2005-01-20 Daimlerchrysler Ag Flüssigkeitsgekühlter Zylinderkopf
DE10306695A1 (de) * 2003-02-18 2004-09-16 Daimlerchrysler Ag Brennkraftmaschine mit einem Kühlmittelkreislauf
DE10328460A1 (de) * 2003-06-25 2005-01-13 Daimlerchrysler Ag Zylinderkopf einer flüssigkeitsgekühlten Brennkraftmaschine
JP2006052666A (ja) * 2004-08-11 2006-02-23 Nissan Motor Co Ltd 筒内直接噴射式内燃機関
US7240644B1 (en) * 2006-06-07 2007-07-10 Ford Global Technologies, Llc Internal combustion engine with cylinder head having directed cooling
JP4756381B2 (ja) * 2007-02-07 2011-08-24 トヨタ自動車株式会社 多気筒エンジンの冷却装置
KR101055832B1 (ko) * 2008-11-20 2011-08-09 기아자동차주식회사 가솔린 직접 분사 엔진의 냉각장치
US8539929B2 (en) * 2009-11-18 2013-09-24 Harley-Davidson Motor Company Cylinder head cooling system
DE102010052830A1 (de) 2010-11-29 2012-05-31 GM Global Technology Operations LLC Zylinderkopf mit Flüssigkeitskühlung und Verfahren zur Kühlung des Zylinderkopfes
JP6759160B2 (ja) * 2017-06-30 2020-09-23 株式会社クボタ 水冷エンジン
US11300072B1 (en) * 2021-05-12 2022-04-12 Ford Global Technologies, Llc Cylinder head for an internal combustion engine

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DE2452999C2 (de) * 1974-11-08 1982-09-16 Motoren-Werke Mannheim AG vorm. Benz Abt. stationärer Motorenbau, 6800 Mannheim Zylinderkopf für eine wassergekühlte Dieselmaschine
JPS56148647A (en) * 1980-04-22 1981-11-18 Nissan Motor Co Ltd Cooling water jacket of internal combustion engine cylinder head
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JPS61268849A (ja) * 1985-05-24 1986-11-28 Toyota Motor Corp 内燃機関のシリンダヘツドの冷却水通路構造
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004005749B4 (de) * 2004-02-05 2014-01-02 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Kühlflüssigkeitsummantelter Zylinderkopf mit optimiertem Kühlflüssigkeitsraum

Also Published As

Publication number Publication date
DE59600960D1 (de) 1999-01-21
US5799627A (en) 1998-09-01
EP0774577A1 (fr) 1997-05-21
DE19542494C1 (de) 1997-01-30
ES2127598T3 (es) 1999-04-16

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