WO2003100237A1 - Culasse de moteur a combustion interne - Google Patents

Culasse de moteur a combustion interne Download PDF

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Publication number
WO2003100237A1
WO2003100237A1 PCT/EP2003/003000 EP0303000W WO03100237A1 WO 2003100237 A1 WO2003100237 A1 WO 2003100237A1 EP 0303000 W EP0303000 W EP 0303000W WO 03100237 A1 WO03100237 A1 WO 03100237A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder head
stiffening ribs
stiffening
cylinder
head according
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.)
Ceased
Application number
PCT/EP2003/003000
Other languages
German (de)
English (en)
Inventor
Ulrich Rieger
Manfred Riester
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of WO2003100237A1 publication Critical patent/WO2003100237A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type

Definitions

  • the invention relates to a cylinder head of an internal combustion engine with the features of the preamble of claim 1.
  • a cylinder head of a water-cooled multi-cylinder internal combustion engine which has gas exchange channels with valve guides, screw pipes for cylinder head screws and a receptacle for a spark plug for each cylinder.
  • the water space in the cylinder head is usually limited by a cylinder head floor, walls and a water space roof. It also has stiffening ribs that run in sections in the machine longitudinal direction in the middle of the cylinder head. In the plane of the cylinder head bolts, stiffening ribs also run transversely to the machine longitudinal direction. These stiffening ribs improve the introduction of force from the cylinder head bolts into the web area between two adjacent cylinders.
  • the object of the invention is to provide a particularly dimensionally stable cylinder head for the highest ignition pressures.
  • the cylinder head according to the invention is characterized by stiffening ribs in the water space. These stiffening ribs are arranged on the cylinder head base and follow the sealing contour of the cylinder head gasket in their course. In general, the contour of the cylinder head gasket has one circular course, ie it runs equidistant from the cylinder bore and ends with the smallest diameter with the cylinder bore.
  • the actual sealing elements of the cylinder head gasket such as beads, thickenings or the like, run a short distance from the inside diameter of the cylinder head gasket.
  • the stiffening ribs according to the invention run above the bottom of the cylinder head in the water space above the sealing elements.
  • the stiffening ribs increase the rigidity of the bottom of the cylinder head in a highly stressed area.
  • the area of the cylinder head gasket is very at risk when it comes to deformation due to the high pressure. This is noticeable, for example, when the bottom of the cylinder head is bent open and the pressure in the cylinder head gasket is then relaxed and the cylinder head gasket is blown through. Due to the pressure distribution through the stiffening rib over the whole or very large part of the circumference of the sealing contour of the cylinder head gasket, bending of the cylinder head with all harmful consequences is reliably prevented.
  • the stiffening ribs are aligned approximately perpendicular to the bottom of the cylinder head. This design offers the highest rigidity with regard to a deflection in the area of the sealing contour of the cylinder head gasket due to the high internal pressure in the cylinder and, in addition, the vertical or almost vertical design of the stiffening ribs results in advantages in the manufacture of the casting core for the water space, which can be easily molded in this way.
  • stiffening elements are provided between the screw pipes for the cylinder head screws and the stiffening ribs.
  • stiffening elements which can also be designed as cast ribs, the force of the cylinder head bolts is evenly introduced and distributed in the cylinder head. As a result, approximately the same pressure is present on the entire circumference of the cylinder head gasket around the cylinder, as a result of which bending, lifting off or blowing through is reliably prevented.
  • stiffening elements are provided between the gas exchange channels with valve guides, the bottom, the receptacle for the injection nozzle, and / or the stiffening ribs.
  • These stiffening elements which can also be designed as cast ribs, distribute the force of the cylinder head bolts on the one hand and, on the other hand, the pressure force resulting from the combustion evenly over the component, which in turn is substantially stiffened by the ribs.
  • the stiffening ribs of two adjacent cylinders are spaced apart in the web area in the bottom of the cylinder head. In this way, the stiffening ribs of two adjacent cylinders are separated and allow an individual pressure distribution for each cylinder that is not influenced by the neighboring cylinder. Since bushings used due to manufacturing tolerances do not always have the same protrusion, the separation of the stiffening ribs of two adjacent cylinders prevents unequal pressing due to the influence of a neighboring cylinder in the press fit cylinder head - cylinder head gasket - bushing - cylinder housing. In a further advantageous embodiment of the invention, the stiffening ribs of two adjacent cylinders are slotted from the combustion chamber side.
  • the slot is introduced in a simple manner from the combustion chamber side, for example using a saw or a milling cutter.
  • the width of the slot is advantageously as small as can still be produced by the tool, since the slot only has the task of separating the stiffening ribs of two adjacent cylinders in order to avoid uneven pressure in the cylinder head gasket.
  • the stiffening ribs have passages for the coolant flow. Through these passages, which e.g. can be pre-cast or drilled, a coolant flow from an inflow through the cylinder head and past the combustion chamber to an outlet is made possible.
  • the openings are so large that there are no significant pressure losses in the coolant circuit, but also so small that the stiffening ribs are not significantly weakened in their effect on the sealing contour.
  • FIG. 1 is a perspective view of a portion of a cylinder head associated with a single cylinder without outer bounding walls
  • FIG. 3 shows a horizontal section through a single cylinder head approximately through the middle of the inlet duct
  • Fig. 4 is a view of the combustion chamber side of the bottom of a block cylinder head
  • Fig. 5 shows a horizontal section through a block cylinder head immediately above the floor.
  • the cylinder head 1 shows a single cylinder head 1 with a stiffening rib 2 according to the invention.
  • the cylinder head 1 has an inlet duct 3, an outlet duct 4 and a cast nozzle assembly 5.
  • the outer walls and the bottom of the cylinder head 1 are not shown for better clarity.
  • the stiffening rib 2 according to the invention is hollow cylindrical with an approximately circular contour. Outside the stiffening rib 2, four screw pipes 6 are cast directly onto the stiffening rib.
  • Screw whistles 6 are not led to the bottom of the cylinder head 1, not shown, in order to achieve the most uniform possible pressure distribution in the combination of cylinder head - cylinder head gasket - cylinder through the introduction of force via the stiffening rib 2. From the screw pipes 6, stiffening elements 7 are guided in the form of cast ribs to the nozzle assembly 5.
  • a single cylinder head 1 is shown, which is cut directly above the bottom 8 of the cylinder head 1.
  • the cylinder head 1 is provided with a stiffening rib 2, inlet channels 3, outlet channels 4 and a nozzle assembly 5.
  • the stiffening rib 2 runs almost round and presses the bottom 8 of the cylinder head 1 with a pressure that is uniform over the circumference onto the sealing contour (not shown) of the cylinder head gasket or the cylinder (not shown).
  • the coolant is supplied into the water space 10 through a drilled channel 9a or through cast openings 9b.
  • the coolant is removed through cast openings 11 via a passage opening 12 to the crankcase (not shown).
  • the size of the bore 9a allows the Determine the coolant flow in the web area between the outlet channels 4 and the nozzle assembly 5 in relation to the total coolant flow.
  • FIG. 3 the cylinder head 1 from FIG. 2 is cut through the inlet duct 3 in a plane parallel to the floor.
  • the valve guides 13, the screw pipes 6 and stiffening elements 14 connecting these cast parts are shown.
  • the nozzle assembly 5 and the valve guides 13, like the screw pipes 6 and the stiffening rib 2, are designed as a coherent, integral section of the cylinder head or are connected and stiffened by short cast ribs.
  • the course of the stiffening rib 2 in this sectional view is no longer circular relatively far above the bottom 8 of the cylinder head 1, but rather as a strongly rounded square.
  • a block cylinder head 15 is shown from the combustion chamber side as a partial view of a whole and two half cylinders.
  • a block cylinder head 15 the cylinder heads of several cylinders of an internal combustion engine are cast together to form a block.
  • the block cylinder head 15 has inlet channels 3, outlet channels 4, a nozzle assembly 5 and screw pipes 6.
  • the sealing contour 16 of the cylinder head gasket, not shown, is shown as a dotted, circular line. Between two adjacent cylinders or the associated sealing contours 16, the bottom 8 of the block cylinder head 15 is provided with a slot 17 which connects the bulges 18 of the screw pipes 6 to one another. In this way, two adjacent cylinders do not influence each other with regard to the pressure in the course of the sealing contour 16.
  • FIG. 5 shows the block cylinder head 15 from FIG. 4 in a section above the floor 8.
  • the stiffening rib 2 is almost completely around the inlet channels 3 and Outlet channels 4 are routed around, only interrupted on the outlet side by a drilled channel 9a and cast channels 9b for supplying coolant and on the inlet side by cast channels 11 for removing coolant.
  • these openings are relatively small, so that the pressure distribution on the cylinder head gasket is maintained evenly.
  • the stiffening ribs 2 of two adjacent cylinders grow together for casting reasons and are subsequently provided with a slot 17 during cylinder head machining so that the stiffening ribs do not influence one another in their pressure distribution.

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)

Abstract

La présente invention concerne une culasse (1) appartenant à un moteur à combustion interne refroidi par liquide, le réservoir d'eau comprenant des nervures de renforcement (2). Ces nervures de renforcement sont disposées sur le fond (8) de la culasse (8) et cheminent en suivant le contour d'étanchéité du joint de culasse.
PCT/EP2003/003000 2002-05-23 2003-03-22 Culasse de moteur a combustion interne Ceased WO2003100237A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002122755 DE10222755A1 (de) 2002-05-23 2002-05-23 Zylinderkopf einer Brennkraftmaschine
DE10222755.1 2002-05-23

Publications (1)

Publication Number Publication Date
WO2003100237A1 true WO2003100237A1 (fr) 2003-12-04

Family

ID=29432220

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/003000 Ceased WO2003100237A1 (fr) 2002-05-23 2003-03-22 Culasse de moteur a combustion interne

Country Status (2)

Country Link
DE (1) DE10222755A1 (fr)
WO (1) WO2003100237A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10328459A1 (de) * 2003-06-25 2005-01-13 Daimlerchrysler Ag Zylinderkopf einer flüssigkeitsgekühlten Brennkraftmaschine
DE10346430A1 (de) * 2003-10-07 2005-05-19 Bayerische Motoren Werke Ag Zylinderkopf mit modifizierten Querwänden
CN103511116A (zh) * 2013-10-10 2014-01-15 潍柴动力股份有限公司 一种发动机及其气缸盖
DE102004005796B4 (de) * 2004-02-06 2014-01-16 Daimler Ag Zylinderkopf für eine Brennkraftmaschine
AT514866A5 (de) * 2012-06-25 2015-07-15 Cummins Ip Inc Zylinderkopf für Brennkraftmaschine
WO2018114022A1 (fr) * 2016-12-22 2018-06-28 Daimler Ag Procédé de production d'une culasse et culasse
AT522060A1 (de) * 2019-01-23 2020-08-15 Avl List Gmbh Flüssigkeitsgekühlter zylinderkopf
CN116044596A (zh) * 2021-10-28 2023-05-02 康明斯公司 用于改进的垫圈密封的气缸盖设计特征

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10344110A1 (de) * 2003-09-24 2005-04-28 Daimler Chrysler Ag Zylinderkopf einer Brennkraftmaschine
US7234422B2 (en) * 2005-09-13 2007-06-26 Gm Global Technology Operations, Inc. Engine cooling method and apparatus
DE102006021175A1 (de) * 2006-05-06 2007-11-08 Bayerische Motoren Werke Ag Zylinderkopf für eine Brennkraftmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3420215A (en) * 1965-12-10 1969-01-07 Maybach Mercedes Benz Motorenb Liquid-cooled cylinder head for internal combustion engines
US3769948A (en) * 1971-08-03 1973-11-06 List H Cylinder head for a water-cooled internal combustion engine
DE4100459A1 (de) * 1990-02-13 1991-08-14 Avl Verbrennungskraft Messtech Zylinderkopf einer fluessigkeitsgekuehlten brennkraftmaschine mit in reihe angeordneten zylindern
EP1028247A2 (fr) * 1999-02-09 2000-08-16 Toyota Jidosha Kabushiki Kaisha Culasse pour un moteur à combustion interne
DE10009776C1 (de) * 2000-03-01 2001-04-05 Daimler Chrysler Ag Brennkraftmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT176403B (de) * 1950-09-09 1953-10-26 E H Karl Dr Ing Maybach Flüssigkeitsgekühlter Zylinderkopf für Brennkraftmaschinen, insbesondere für Fahrzeugmotoren
CH423356A (de) * 1964-10-27 1966-10-31 Sulzer Ag Zylinderkopf einer Brennkraftmaschine
JP3498446B2 (ja) * 1995-10-26 2004-02-16 日産自動車株式会社 火花点火機関用シリンダヘッド

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3420215A (en) * 1965-12-10 1969-01-07 Maybach Mercedes Benz Motorenb Liquid-cooled cylinder head for internal combustion engines
US3769948A (en) * 1971-08-03 1973-11-06 List H Cylinder head for a water-cooled internal combustion engine
DE4100459A1 (de) * 1990-02-13 1991-08-14 Avl Verbrennungskraft Messtech Zylinderkopf einer fluessigkeitsgekuehlten brennkraftmaschine mit in reihe angeordneten zylindern
EP1028247A2 (fr) * 1999-02-09 2000-08-16 Toyota Jidosha Kabushiki Kaisha Culasse pour un moteur à combustion interne
DE10009776C1 (de) * 2000-03-01 2001-04-05 Daimler Chrysler Ag Brennkraftmaschine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10328459A1 (de) * 2003-06-25 2005-01-13 Daimlerchrysler Ag Zylinderkopf einer flüssigkeitsgekühlten Brennkraftmaschine
DE10346430A1 (de) * 2003-10-07 2005-05-19 Bayerische Motoren Werke Ag Zylinderkopf mit modifizierten Querwänden
DE102004005796B4 (de) * 2004-02-06 2014-01-16 Daimler Ag Zylinderkopf für eine Brennkraftmaschine
AT514866A5 (de) * 2012-06-25 2015-07-15 Cummins Ip Inc Zylinderkopf für Brennkraftmaschine
AT514866B1 (de) * 2012-06-25 2016-07-15 Cummins Ip Inc Zylinderkopf für Brennkraftmaschine
US9470177B2 (en) 2012-06-25 2016-10-18 Cummins Intellectual Property, Inc. Cylinder head for internal combustion engine
CN103511116A (zh) * 2013-10-10 2014-01-15 潍柴动力股份有限公司 一种发动机及其气缸盖
CN103511116B (zh) * 2013-10-10 2017-04-26 潍柴动力股份有限公司 一种发动机及其气缸盖
WO2018114022A1 (fr) * 2016-12-22 2018-06-28 Daimler Ag Procédé de production d'une culasse et culasse
AT522060A1 (de) * 2019-01-23 2020-08-15 Avl List Gmbh Flüssigkeitsgekühlter zylinderkopf
AT522060B1 (de) * 2019-01-23 2021-04-15 Avl List Gmbh Flüssigkeitsgekühlter zylinderkopf
CN116044596A (zh) * 2021-10-28 2023-05-02 康明斯公司 用于改进的垫圈密封的气缸盖设计特征

Also Published As

Publication number Publication date
DE10222755A1 (de) 2003-12-11

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