EP1008733B1 - Culasse refroidie à l'huile - Google Patents

Culasse refroidie à l'huile Download PDF

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Publication number
EP1008733B1
EP1008733B1 EP99123616A EP99123616A EP1008733B1 EP 1008733 B1 EP1008733 B1 EP 1008733B1 EP 99123616 A EP99123616 A EP 99123616A EP 99123616 A EP99123616 A EP 99123616A EP 1008733 B1 EP1008733 B1 EP 1008733B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
cooling
internal combustion
combustion engine
head
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
EP99123616A
Other languages
German (de)
English (en)
Other versions
EP1008733A2 (fr
EP1008733A3 (fr
Inventor
Lothar Bauer
Werner Lemme
Reinhard Rechberg
Hans-Peter Mahlberg
Herbert Schleiermacher
Wolfgang Strusch
Harald Siegert
Frank Dr. Schmitt
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.)
Deutz AG
Original Assignee
Deutz 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 Deutz AG filed Critical Deutz AG
Publication of EP1008733A2 publication Critical patent/EP1008733A2/fr
Publication of EP1008733A3 publication Critical patent/EP1008733A3/fr
Application granted granted Critical
Publication of EP1008733B1 publication Critical patent/EP1008733B1/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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P2003/006—Liquid cooling the liquid being oil
    • 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
    • F02B2075/1816—Number of cylinders four
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/34—Lateral camshaft position
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • F02B75/20—Multi-cylinder engines with cylinders all in one line
    • 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
    • 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
    • F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis

Definitions

  • the invention relates to an internal combustion engine with a cylinder crankcase, the at least two in row construction trained and covered by a likewise designed in row cylinder head Cylinder, in each of which a via a connecting rod to an in the crankcase hinged crankshaft hinged piston is movable, wherein the internal combustion engine cooling oil spaces, a Lubricating system and having an oil pump in fluid communication stand, with each cylinder a cylinder cooling oil space and each Cylinder head has at least one cylinder head cooling oil space, wherein on the one hand, the individual cylinder cooling oil chambers and the individual cylinder head cooling oil chambers a row of cylinders connected in series with each other and on the other hand, the cylinder cooling oil chambers and the Cylinder head cooling oil chambers as a whole also connected in series and wherein a return line from the end-side cylinder head cooling oil space back along the cylinder head row towards the input side cylinder head cooling oil space is arranged and wherein in the return line per cylinder a connecting hole with a Stegbo
  • Such an internal combustion engine is known from DE 43 25 141 A1.
  • This internal combustion engine is oil-cooled in the specified manner.
  • the cooling system is designed so that at a maximum provided power the internal combustion engine, especially in the field Piston, cylinder and cylinder head, reliably cooled.
  • the invention is based on the object, the cooling system such further developing oil-cooled internal combustion engine in the form that an even more effective cooling, in particular of the cylinder head, also with further increase in performance of the internal combustion engine is guaranteed.
  • This object is achieved in that a second return line at least approximately parallel to the first return line arranged along the cylinder head row and with the end-side Cylinder head cooling oil space is connected.
  • the second return line runs along the range of valve stem seals of the exhaust valves and in the immediate vicinity of a vent hole, which Oily air for integrated in the cylinder head cover crankcase ventilation box leads without further junction or diversion a channel.
  • the thermal highly loaded area of the exhaust valves especially in the area the valve stem seals, is intensively cooled and on the other hand Coking of the oily crankcase leaking gases is prevented.
  • the cylinder cooling oil chambers as a spectacle-shaped cooling chambers in the one cylinder circumferentially adjacent Cylinder head area formed. This ensures a low-flow flow around the individual cylinders, wherein in that the flow cross sections of adjacent cylinders the spectacle-shaped cold rooms are on different sides, an intense and good cooling of the vulnerable area between two cylinders is guaranteed.
  • the return lines in the cylinder head are at least approximated arranged parallel to each other and in the crankcase or the oil pan of the internal combustion engine merged.
  • both lines for example in a single drilling operation.
  • the outlet channel by a in Compound with the surrounding air gap from the cylinder head floor largely decoupled and by the likewise spectacle-shaped Cylinder head cooling oil space below the air gap is a far-reaching Separation of the heat flow from the inner to the outer area of the cylinder head floor takes place.
  • this middle Cooling channel can also be a highly targeted cooling thermally high claimed parts of the cylinder head.
  • this mean cooling channel meandering trained and runs from an engine end to the opposite engine end.
  • This middle one Cooling channel is made by appropriately trained cores during formed the casting of the cylinder head.
  • the middle cooling channel encloses the individual inlet channels largely and tangent on the other hand, the exhaust ducts are as little as possible.
  • the middle cooling channel in turn close to the injector holes passed, so that the injection valve again intensively cooled becomes.
  • a descending Opening present, which the middle cooling channel with the Oil space of the crankcase connects.
  • the cylinder head 1 according to FIG. 1 comes with a 4-cylinder self-igniting Internal combustion engine for use.
  • the cylinder head designed as a block cylinder head and is made in particular Cast gray cast iron.
  • the cylinder head can also for other cylinder numbers, such as 2- or 3-cylinder designed and cast from other materials, such as light metal be.
  • the internal combustion engine as a series engine or be designed as a V-engine.
  • the cylinder head continues as a 2-valve cylinder head with a Inlet and an exhaust valve 2 per cylinder provided.
  • the intake valves and exhaust valves 2 of one in the crankcase the internal combustion engine mounted camshaft respectively own pushrods and rocker arms 3.
  • the rocker arms 3 are on a shaft mounted in the cylinder head 1 and with conventional valve lash adjusters 4 provided.
  • the bearings of the rocker arm 3 on the shaft are lubricated by oil holes, not shown.
  • the valves are - as shown in the exhaust valve 2 - via valve springs 5, located on the cylinder head 1 and on with the valves Supported valve spring plates, in the cylinder head 1 established.
  • the valve stems of the valves are via valve stem seals 7 sealed against the cylinder head 1.
  • Valve stem seals 7 prevent the ingress of lubricating oil in the gap between the valve stem and the surrounding Drilling.
  • Right and left along the valve shafts run in the Area near the valve stem seals 7 along the cylinder bank a first return line 8a and a second return line 8b for the introduced into the cylinder head 1 cooling oil.
  • the valve stem seals 7 thermally opposite to itself by hot exhaust gases in the exhaust ports 9 heating cylinder head areas, which between the valve stem seals 7 and the outlet channels 9 to be isolated.
  • the outlet channels 9 through with the Surroundings related air gaps 10 largely of decoupled from the cylinder head floor 11.
  • the crankcase In the cylinder head floor are otherwise the cylinder head cooling oil chambers 12 as annular or spectacle-shaped recesses embedded in themselves in extension of each adjacent Zylinderkühtölsammlung extend.
  • the crankcase is referred to as so-called Open deck running.
  • the cylinder head cooling oil spaces 12a, 12b, 12c, 12d are in the context of casting capabilities deep in the Cylinder head floor 11 inserted. This can be a relatively high Cooling oil amount through the cylinder head cooling oil chambers 12a, 12b, 12c, 12d be encouraged.
  • Fig. 1 is further an oil-containing Kurbelraumleckgase leading vent hole 24 to recognize. By the running next to it Bore 8b prevents coking of the oily gases.
  • FIG. 2 shows the cooling diagram of a 4-cylinder cylinder head 1 shown schematically.
  • the ring-shaped cylinder head cooling oil spaces 12a, 12b, 12c, 12d have an input side cylinder head cooling oil space 12a, in which the cooling oil from the underlying Cylinder cooling oil chamber via transfer openings 13 in the cylinder head gasket entry.
  • Part of the incoming cooling oil is (by the size or depth of the flow connections favors) directly along the cylinder head cooling oil spaces 12a, 12b, 12c to to the end-side cylinder head cooling oil space 12d and there via a Connecting line 14 passed into the second return line 8b.
  • These Return line 8b runs along the cylinder head as previously stated 1 and flows into the input-side cylinder head area in a drain line 15b.
  • This drain line 15b carries the cooling oil through the cylinder head 1 back into the crankcase, where they are in the crankcase with a drain line 15a coincides.
  • This drain line 15a leads the coming of the return line 8a Cooling oil back.
  • the return line 8a is per cylinder over Bar holes 16a, 16b, 16c, 16d and connection holes 17a, 17b, 17c, 17d with the respective cylinder head cooling oil spaces 12a, 12b, 12c, 12d connected.
  • here is the end cylinder head cooling oil space 12d via a connecting line 14a with the return line 8a connected.
  • FIG. 3 the basic structure of Cooling system similar to that shown in FIG. 2.
  • too Cooling oil via transfer openings 13 from the underlying cylinder cooling oil space into the cylinder head cooling oil space 12a to get out of this along the adjoining cylinder head cooling oil chambers 12b, 12c to be passed to the end-side cylinder head cooling oil space 12d.
  • From this passes the cooling oil via transfers 20 and a branch channel 20 ' on the "cold" injection side of the here also interrupted Cylinder head cooling oil chamber 12d in the middle cooling channel 19.
  • This middle cooling channel 19 is formed meander-shaped and extends to the input side cylinder head side. The middle one encloses thereby Cooling channel largely the inlet channels and is also close to the Injector holes passed.

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)
  • Lubrication Of Internal Combustion Engines (AREA)

Claims (10)

  1. Moteur à combustion interne avec un carter moteur, qui présente au moins deux cylindres réalisés dans une conception en ligne et recouverts par une culasse également réalisée dans une conception en ligne, dans lesquels respectivement un piston articulé au moyen d'une bielle sur un vilebrequin logé dans le carter moteur peut être déplacé, le moteur à combustion interne présentant des espaces pour l'huile de refroidissement, un système de lubrification et une pompe à huile, qui sont en liaison d'écoulement, chaque cylindre présentant un espace pour l'huile de refroidissement du cylindre et chaque culasse présentant au moins un espace pour l'huile de refroidissement de culasse, d'une part les espaces individuels pour l'huile de refroidissement de culasse et les espaces individuels pour l'huile de refroidissement de cylindre d'une rangée de cylindres étant branchés en série entre eux et d'autre part les espaces pour l'huile de refroidissement de cylindre et les espaces pour l'huile de refroidissement de culasse en tant qu'ensemble étant également branchés en série et une conduite de reflux étant disposée en revenant de l'espace côté extrémité pour l'huile de refroidissement de culasse, en longeant la rangée de culasses et en se dirigeant vers l'espace côté entrée pour l'huile de refroidissement de cylindre et un alésage de liaison avec un alésage transversal débouchant dans la conduite de reflux par cylindre,
    caractérisé en ce qu'une seconde conduite de reflux (8b) est disposée au moins de façon approximativement parallèle à la première conduite de reflux (8a) le long de la rangée de culasses et reliée à l'espace côté extrémité pour l'huile de refroidissement de culasse (12d).
  2. Moteur à combustion interne selon la revendication 1,
    caractérisé en ce que la seconde conduite de reflux (8b) est agencée le long de la zone des joints de tige de soupape (12) des soupapes d'échappement (2) sans autre débouché ou bifurcation d'un canal.
  3. Moteur à combustion interne selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les espaces pour l'huile de refroidissement de cylindre sont conçus comme des espaces de refroidissement en forme de lunettes dans la zone de culasse voisine d'un cylindre au niveau périphérique.
  4. Moteur à combustion interne selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les conduites de reflux (8a, 8b) sont disposées dans la culasse (1) au moins de façon approximativement parallèle et sont regroupées dans le carter de vilebrequin ou dans le carter d'huile du moteur à combustion interne.
  5. Moteur à combustion interne selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le canal de sortie (9) est largement dissocié du fond de culasse (11) par une fente d'aération (10) se trouvant en liaison avec l'environnement et que, par l'espace en forme de lunettes pour l'huile de refroidissement de culasse (12a, 12b, 12c, 12d) au-dessous de la fente d'aération (10), on a une large séparation du flux de chaleur de l'intérieur dans la zone extérieure du fond de culasse (11).
  6. Moteur à combustion interne selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'un canal de refroidissement (19) central est disposé dans la culasse (1) entre l'espace en forme de lunettes pour l'huile de refroidissement de culasse (12a, 12b, 12c, 12d) et les conduites de reflux (8a, 8b).
  7. Moteur à combustion interne selon la revendication 6,
    caractérisé en ce que le canal de refroidissement (19) central s'étend depuis un côté d'extrémité du moteur à combustion interne, en forme de méandre, vers le côté d'extrémité opposée du moteur à combustion interne.
  8. Moteur à combustion interne selon l'une quelconque des revendications 6 ou 7,
    caractérisé en ce que le canal de refroidissement (19) central entoure largement les canaux d'entrée (21).
  9. Moteur à combustion interne selon l'une quelconque des revendications 6 à 8,
    caractérisé en ce que le canal de refroidissement (19) central est guidé de façon étanche sur les alésages d'injecteurs (22).
  10. Moteur à combustion interne selon l'une quelconque des revendications 6 à 9,
    caractérisé en ce que, sur un côté d'extrémité du moteur à combustion interne, un orifice (23) descendant relie le canal de refroidissement (19) central à l'espace d'huile du carter de vilebrequin.
EP99123616A 1998-12-12 1999-11-26 Culasse refroidie à l'huile Expired - Lifetime EP1008733B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19857458A DE19857458A1 (de) 1998-12-12 1998-12-12 Ölgekühlter Zylinderkopf
DE19857458 1998-12-12

Publications (3)

Publication Number Publication Date
EP1008733A2 EP1008733A2 (fr) 2000-06-14
EP1008733A3 EP1008733A3 (fr) 2000-12-06
EP1008733B1 true EP1008733B1 (fr) 2003-08-13

Family

ID=7890923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99123616A Expired - Lifetime EP1008733B1 (fr) 1998-12-12 1999-11-26 Culasse refroidie à l'huile

Country Status (2)

Country Link
EP (1) EP1008733B1 (fr)
DE (2) DE19857458A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10339653A1 (de) * 2003-08-28 2005-03-24 Deutz Ag Gießkernminimierter Zylinderkopf
AT505591B8 (de) 2008-10-02 2010-04-15 Avl List Gmbh Brennkraftmaschine mit einem zylinderkopf
JP6205730B2 (ja) 2013-01-21 2017-10-04 スズキ株式会社 シリンダヘッド
FR3044355B1 (fr) * 2015-12-01 2017-12-08 Peugeot Citroen Automobiles Sa Ensemble pour moteur thermique comportant un support moteur integrant une fonction de degazage de culasse

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2054431C3 (de) * 1970-11-05 1974-03-14 Daimler Benz Ag Mehrzylindrige flüssigkeitsgekühlte Brennkraftmaschine mit Zwangsumlaufkühlung
US4131093A (en) * 1973-06-21 1978-12-26 National Research Development Corporation Internal combustion engines
JPS5352969Y2 (fr) * 1975-04-25 1978-12-18
AT389565B (de) * 1980-06-16 1989-12-27 List Hans Wassergekuehlte mehrzylinder-brennkraftmaschine
FR2660694B1 (fr) * 1990-04-05 1992-07-31 Peugeot Moteur a combustion interne comprenant un circuit de refroidissement perfectionne.
DE4325141A1 (de) * 1993-07-27 1995-02-02 Kloeckner Humboldt Deutz Ag Brennkraftmaschine

Also Published As

Publication number Publication date
DE19857458A1 (de) 2000-06-15
DE59906579D1 (de) 2003-09-18
EP1008733A2 (fr) 2000-06-14
EP1008733A3 (fr) 2000-12-06

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