EP0632190B1 - Internal combustion engine with two cylinder banks - Google Patents

Internal combustion engine with two cylinder banks Download PDF

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Publication number
EP0632190B1
EP0632190B1 EP94108066A EP94108066A EP0632190B1 EP 0632190 B1 EP0632190 B1 EP 0632190B1 EP 94108066 A EP94108066 A EP 94108066A EP 94108066 A EP94108066 A EP 94108066A EP 0632190 B1 EP0632190 B1 EP 0632190B1
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EP
European Patent Office
Prior art keywords
combustion engine
cylinder
internal
cooling
duct
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
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EP94108066A
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German (de)
French (fr)
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EP0632190A1 (en
Inventor
Albrecht Reustle
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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Classifications

    • 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
    • F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
    • F02B75/243—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type with only one crankshaft of the "boxer" type, e.g. all connecting rods attached to separate crankshaft bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002—Cooling
    • 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
    • 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
    • F01P2003/027—Cooling cylinders and cylinder heads in parallel
    • 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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/143—Controlling of coolant flow the coolant being liquid using restrictions
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • 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
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle 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
    • F02B2275/18—DOHC [Double overhead camshaft]
    • 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
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
    • F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines

Definitions

  • the invention relates to an internal combustion engine with two rows of cylinders according to the preamble of claim 1.
  • a generic internal combustion engine is disclosed, the water pump of which is flanged to the cylinder block of a row of cylinders offset radially to the crankshaft at the front.
  • This pump conveys cooling water into the opposite row of cylinders via a connecting channel cast into one of the crankshaft bearings below the crankshaft.
  • the cooling jackets of the crankcase halves which are designed in open-deck design, are divided in half by a horizontal wall, so that the cooling water first flows through the bottom half, then in a U-shaped cross-flow through the cylinder heads and then through the top half of the cooling jackets.
  • the cooling water is routed via an outlet connection of the cylinder rows to a separate manifold, which is connected to the water cooler of the internal combustion engine.
  • the invention has for its object an internal combustion engine with two Rows of cylinders to improve the flow of cooling water is largely integrated into housing parts of the internal combustion engine and effective cooling is achieved at the same time.
  • the cooling water of both cylinder rows can advantageously be removed via a single, separate line arranged between a water / air heat exchanger and the internal combustion engine if the cooling water flows of the discharge channels are connected to one another via a transverse channel arranged in the upper wall. If this transverse channel is arranged adjacent to the end face of the internal combustion engine carrying the cooling water pump, the cooling water is first led from this end face along the supply channels in the direction of the opposite end face and from there back to the first end face for optimum cooling.
  • the cooling water flow leading can be in a particularly simple manner Integrate channels in the housing parts of the internal combustion engine, if this at be cast in directly during manufacture. As a modification to this, pipes be poured in.
  • An internal combustion engine with two rows of cylinders and a V-angle of 180 ° has a crankcase with two halves 1, 2 which are separated vertically along a division plane E - E and which comprise cylinder blocks 3, 4.
  • a longitudinal axis A runs in this plane E-E, which is also the axis of rotation of a crankshaft, not shown.
  • This is connected via connecting rods 5 to pistons 6, which move in a horizontal plane H - H.
  • Each cylinder bank is assigned a cylinder head 7 which is placed on a crankcase half 1, 2 in a parting plane T-T.
  • the heads 7 each have inlet and outlet channels 8 and 9 controlled by gas exchange valves, not shown.
  • the cylinders of each row of cylinders have cooling water jackets 10 and the heads 7 have cooling water channels 11.
  • a recess 13 for receiving a cooling water pump, not shown, is arranged on one end of the cylinder block 3.
  • This conveys cooling water to the cylinder rows 1, 2 via two outflow openings 14, one of these outflow openings 14 being designed as an inlet opening 15 into a feed channel 16 and the other being formed in a downward-directed outflow flange 17.
  • Both rows of cylinders have feed channels 16 arranged adjacent to the parting planes T - T below and parallel to the longitudinal axis A in a lower wall 18, 19. These channels 16 are connected to the cooling water jackets 10 and second connections 21 to the channels 11 via calibrated first connections 20 provided with a defined cross section.
  • the feed channel 16 which is spaced apart from the cooling water pump
  • the cylinder bank is connected to the outflow flange 17 by means of a connecting channel 22 connected.
  • a section 23 of this channel 22 is used as a heat exchanger tube 24 formed and runs with cooling fins 25 provided on its outer jacket in an oil pan 26 of the internal combustion engine.
  • the tube 24 bridges the Partition plane E - E and is on another, in the lower wall 19th trained section 27 of the connecting channel 22 connected.
  • corresponding discharge channels 30 arranged are connected to the cooling jackets 10 and the channels 11 of the cylinder heads 7.
  • Adjacent to the end face 12 is a collecting channel designed as a transverse channel 31 arranged in the walls 28, 29, which with an outlet 32 with a water / air heat exchanger, not shown, is connected.
  • the feed and discharge channels 16 and 30, the transverse channel 31 and the section 27 of the connecting channel 22 are cast into the walls 18, 19, 28, 29.
  • the cooling water pump conveys along the drawn arrows a cooling water flow over the inlet opening 15 or the connecting channel 22 into the feed channels 16, of which the Water flow from the end face 12 along the axis A according to the Cross sections of the connections 20 and 21 to the cooling jackets 10 and Cylinder heads 7 is divided.
  • the heads 7 are traversed in cross flow and the heated partial flows are fed to the discharge channels 30.
  • Drainage channels 30 the water flows back to the adjacent to the End face 12 lying transverse channel 31 and to its outflow connection 32.
  • the water flowing through the heat exchanger tube 24 heats the oil sump indicated by an oil level line S, so that the internal combustion engine reaches its operating temperature more quickly and as a result the pollutant emission is reduced. Due to the larger heat storage capacity of water compared to oil, the ribbing is arranged lying in the oil to achieve the best possible heat transfer. During continuous operation of the internal combustion engine, the oil reaches a higher temperature than the water flowing through the pipe 24, so that the oil is cooled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Description

Die Erfindung betrifft eine Brennkraftmaschine mit zwei Zylinderreihen gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to an internal combustion engine with two rows of cylinders according to the preamble of claim 1.

In dem SAE Technical Paper Nr. 890471, 1989 ist eine gattungsgemäße Brennkraftmaschine offenbart, deren Wasserpumpe frontseitig radial zur Kurbelwelle versetzt an den Zylinderblock einer Zylinderreihe geflanscht ist. Diese Pumpe fördert Kühlwasser in die gegenüberliegende Zylinderreihe über einen unterhalb der Kurbelwelle in eines der Kurbelwellenlager eingegossenen Verbindungskanal.
Die Kühlmäntel der in Open-Deck-Bauweise ausgeführten Kurbelgehäusehälften sind durch eine horizontale Wand hälftig geteilt, so daß das Kühlwasser zunächst die unten liegende Hälfte, anschließend im Querstrom U-förmig die Zylinderköpfe und dann die oben liegende Hälfte der Kühlmäntel durchströmt. Abschließend wird das Kühlwasser über je einen Abströmstutzen der Zylinderreihen in eine separate Sammelleitung geführt, welche an den Wasserkühler der Brennkraftmaschine angeschlossen ist.In SAE Technical Paper No. 890471, 1989, a generic internal combustion engine is disclosed, the water pump of which is flanged to the cylinder block of a row of cylinders offset radially to the crankshaft at the front. This pump conveys cooling water into the opposite row of cylinders via a connecting channel cast into one of the crankshaft bearings below the crankshaft.
The cooling jackets of the crankcase halves, which are designed in open-deck design, are divided in half by a horizontal wall, so that the cooling water first flows through the bottom half, then in a U-shaped cross-flow through the cylinder heads and then through the top half of the cooling jackets. Finally, the cooling water is routed via an outlet connection of the cylinder rows to a separate manifold, which is connected to the water cooler of the internal combustion engine.

Aus US-PS-2914045 ist eine zweireihige Brennkraftmaschine mit horizontaler Zylinderanordnung bekannt, deren Kurbelgehäuse einstückig gegossen ist und einen nach unten offenen, U-förmigen Kurbelraum aufweist. Zur Versteifung der unten liegenden Öffnung des Kurbelgehäuses und zur Führung von Kühlwasser sind benachbart dieser Öffnung sich in Längsrichtung der Kurbelwelle erstreckende, wasserführende Längskanäle eingegossen. Sirnseitig des Kurbelgehäuses ist ein Wasserpumpengehäuse angeflanscht, in welchem ein auf der Kurbelwelle angeordnetes Pumpenrad läuft und welches Kühlwasser in die beiden Längskanäle leitet. In diese Längskanäle münden quer verlaufende, eingesetzte Rohre, welche den gesamten Kühlwasserstrom zu den Zylinderköpfen führen, welche im Querstrom von unten nach oben durchströmt werden und anschließend das erhitzte Wasser über externe Leitungen zu einem Kühler führen. Der Kühlwassermantel der Zylinder ist nicht durchströmt und kühlt durch Thermosyphoneffekt. From US-PS-2914045 is a two-row internal combustion engine with a horizontal Known cylinder assembly, the crankcase is cast in one piece and has a U-shaped crank chamber open at the bottom. To stiffen the opening at the bottom of the crankcase and for guiding cooling water are adjacent to this opening in the longitudinal direction of the crankshaft extending, water-bearing longitudinal channels cast in. Sirnsseite des Crankcase is flanged to a water pump housing, in which one the pump shaft arranged on the crankshaft runs and which cooling water flows into the conducts both longitudinal channels. Transversely extending, used pipes, which to the entire cooling water flow to the Lead cylinder heads, which flows in a cross flow from bottom to top and then the heated water via external lines to one Run cooler. The cooling water jacket of the cylinders is not flowed through and cools through thermosiphon effect.

Der Erfindung liegt die Aufgabe zugrunde, eine Brennkraftmaschine mit zwei Zylinderreihen dahingehend zu verbessern, daß der Kühlwasserstrom weitestgehend integriert in Gehäuseteilen der Brennkraftmaschine geführt ist und gleichzeitig eine effektive Kühlung erzielt wird.The invention has for its object an internal combustion engine with two Rows of cylinders to improve the flow of cooling water is largely integrated into housing parts of the internal combustion engine and effective cooling is achieved at the same time.

Die Lösung dieser Aufgabe gelingt mit den Merkmalen des Patentanspruches 1. Vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen angegeben.This object is achieved with the features of patent claim 1. Advantageous embodiments of the invention are in the dependent claims specified.

Wenn bei einer zweireihigen Brennkraftmaschine benachbart der zwischen Zylinderköpfen und Zylinderblöcken liegenden Trennebene unterhalb bzw. oberhalb der Längsachse der Kurbelwelle parallel dazu verlaufende Zuführ- bzw. Abführkanäle für Kühlwasser in einer unteren bzw. oberen Wandung der Zylinderreihe angeordnet sind, so entfallen durch die in die Wandungen integrierte Anordnung separate Leitungen und der damit vorhandene Aufwand bezüglich Montage, Herstellung und Anzahl der Bauteile. Die Anordnung der Zu- und Abführkanäle benachbart der Trennebene gewährleistet eine effektive Kühlung, da das Kühlwasser in unmittelbarer Nähe des Brennraumes zugeführt wird, Kühlmantel und Zylinderkopf durchströmt und danach auf kürzestem und direktem Weg abgeführt wird.If in a two-row internal combustion engine adjacent between Cylinder heads and cylinder blocks lying parting plane below or Above the longitudinal axis of the crankshaft parallel feed or Drainage channels for cooling water in a lower or upper wall of the Row of cylinders are arranged, so omitted in the walls Integrated arrangement of separate lines and the effort involved with regard to assembly, manufacture and number of components. The arrangement of the feed and Drainage channels adjacent to the parting plane ensure effective Cooling because the cooling water is supplied in the immediate vicinity of the combustion chamber is flowed through the cooling jacket and cylinder head and then on the shortest and direct way is discharged.

Die Abfuhr des Kühlwassers beider Zylinderreihen kann in vorteilhafter Weise über eine einzige separate, zwischen einem Wasser/Luftwärmetauscher und der Brennkraftmaschine angeordneten Leitung erfolgen, wenn die Kühlwasserströme der Abführkanäle über einen in der oberen Wandung angeordneten Querkanal miteinander verbunden sind.
Ist dieser Querkanal benachbart der die Kühlwasserpumpe tragenden Stirnseite der Brennkraftmaschine angeordnet, so wird das Kühlwasser zwecks optimaler Kühlung zunächst von dieser Stirnseite aus entlang der Zuführkanäle in Richtung auf die gegenüberliegende Stirnseite und von dort zurück zur ersten Stirnseite geführt. The cooling water of both cylinder rows can advantageously be removed via a single, separate line arranged between a water / air heat exchanger and the internal combustion engine if the cooling water flows of the discharge channels are connected to one another via a transverse channel arranged in the upper wall.
If this transverse channel is arranged adjacent to the end face of the internal combustion engine carrying the cooling water pump, the cooling water is first led from this end face along the supply channels in the direction of the opposite end face and from there back to the first end face for optimum cooling.

Die Anordnung einer Eintrittsöffnung von einem der Zuführkanäle in einer die Kühlwasserpumpe aufnehmenden Vertiefung ermöglicht für diese eine Zylinderreihe einen unmittelbaren Wassereintritt von der Pumpe in diesen Kanal ohne zusätzliche Verbindungen.The arrangement of an inlet opening from one of the feed channels in a A recess for the cooling water pump enables this Row of cylinders ensures that water enters the channel directly from the pump without additional connections.

Die Anordnung von einem Abschnitt des Verbindungskanales zwischen Kühlwasserpumpe und der anderen Zylinderreihe in einer Ölwanne der Brennkraftmaschine nutzt den dort vorhandenen und erforderlichen Bauraum zusätzlich aus und vermeidet eine komplizierte und aufwendige Verbindung. Zusätzliche Vorteile entstehen dadurch, daß dieser Abschnitt als Wärmetauscherrohr ausgebildet sein kann, welches zum Aufwärmen bzw. Abkühlen des in der Ölwanne befindlichen Schmieröles dient und hierfür auf seiner Außenfläche Kühlrippen aufweist. Ein separater Ölkühler kann somit entfallen. Weiterhin ist bei einem vertikal geteilten Kurbelgehäuse der Brennkraftmaschine durch die Verwendung eines solchen Rohres ein Wasserdurchtritt über die Trennebene des Kurbelgehäuses vermieden.The arrangement of a section of the connecting channel between Cooling water pump and the other row of cylinders in an oil pan Internal combustion engine uses the space available and required there additionally and avoids a complicated and time-consuming connection. Additional advantages arise from the fact that this section as Heat exchanger tube can be formed, which for heating or Cooling of the lubricating oil in the oil pan serves and for this purpose has cooling fins on its outer surface. A separate oil cooler can omitted. Furthermore, in a vertically split crankcase Internal combustion engine through the use of such a tube Water penetration through the parting plane of the crankcase avoided.

Durch die Anordnung der Zuführkanäle benachbart der Trennebenen zwischen Zylinderblock und Zylinderkopf ist es möglich, mit einfach und kurz gestalteten ersten bzw. zweiten Verbindungen mit kalibriertem Durchtrittsquerschnitt den Kühlwasserstrom dem Kühlmantel bzw. dem Zylinderkopf zuzuteilen.By arranging the feed channels adjacent to the parting planes between Cylinder block and cylinder head is possible with simple and short design first or second connections with a calibrated cross section Allocate cooling water flow to the cooling jacket or the cylinder head.

In besonders einfacher Weise lassen sich die den Kühlwasserstrom führenden Kanäle in die Gehäuseteile der Brennkraftmaschine integrieren, wenn diese bei der Herstellung direkt eingegossen werden. In Abwandlung dazu können Rohre eingegossen sein.The cooling water flow leading can be in a particularly simple manner Integrate channels in the housing parts of the internal combustion engine, if this at be cast in directly during manufacture. As a modification to this, pipes be poured in.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand einer Zeichnung näher erläutert.An embodiment of the invention is described below with reference to a drawing explained in more detail.

Es zeigen:

Fig.1
schematisch einen Querschnitt durch eine Brennkraftmaschine direkt benachbart einer ihrer Stirnseiten und
Fig. 2
einen Schnitt entlang der Linie II-II gemäß Fig. 1.
Show it:
Fig. 1
schematically shows a cross section through an internal combustion engine directly adjacent to one of its end faces and
Fig. 2
a section along the line II-II of FIG. 1st

Eine Brennkraftmaschine mit zwei Zylinderreihen und einem V-Winkel von 180° Grad weist ein vertikal entlang einer Teilungsebene E - E getrenntes Kurbelgehäuse mit zwei Hälften 1, 2 auf, welche Zylinderblöcke 3, 4 umfassen. In dieser Ebene E - E verläuft eine Längsachse A, die zugleich Rotationsachse einer nicht gezeigten Kurbelwelle ist. Diese ist über Pleuel 5 mit Kolben 6 verbunden, welche sich in einer horizontalen Ebene H - H bewegen. Jeder Zylinderreihe ist ein Zylinderkopf 7 zugeordnet, welcher in einer Trennebene T- T auf eine Kurbelgehäusehälfte 1, 2 aufgesetzt ist. Die Köpfe 7 weisen jeweils von nicht gezeigten Gaswechselventilen beherrschte Einlaß- und Auslaßkanäle 8 und 9 auf.
Die Zylinder jeder Zylinderreihe weisen Kühlwassermäntel 10 und die Köpfe 7 Kühlwasserkanäle 11 auf.An internal combustion engine with two rows of cylinders and a V-angle of 180 ° has a crankcase with two halves 1, 2 which are separated vertically along a division plane E - E and which comprise cylinder blocks 3, 4. A longitudinal axis A runs in this plane E-E, which is also the axis of rotation of a crankshaft, not shown. This is connected via connecting rods 5 to pistons 6, which move in a horizontal plane H - H. Each cylinder bank is assigned a cylinder head 7 which is placed on a crankcase half 1, 2 in a parting plane T-T. The heads 7 each have inlet and outlet channels 8 and 9 controlled by gas exchange valves, not shown.
The cylinders of each row of cylinders have cooling water jackets 10 and the heads 7 have cooling water channels 11.

An einer Stirnseite 12 ist an dem einen Zylinderblock 3 eine Vertiefung 13 zur Aufnahme einer nicht gezeigten Kühlwasserpumpe angeordnet. Diese fördert über zwei Abströmöffnungen 14 Kühlwasser zu den Zylinderreihen 1, 2, wobei eine dieser Abströmöffnungen 14 als Eintrittsöffnung 15 in einen Zuführkanal 16 ausgebildet ist und die andere in einem abwärts gerichteten Abströmflansch 17 ausgebildet ist.
Beide Zylinderreihen weisen benachbart der Trennebenen T - T unterhalb und parallel zur Längsachse A verlaufend in einer unteren Wandung 18, 19 angeordnete Zuführkanäle 16 auf. Diese Kanäle 16 stehen über kalibrierte, mit definiertem Querschnitt versehene erste Verbindungen 20 mit den Kühlwassermänteln 10 und zweite Verbindungen 21 mit den Kanälen 11 in Verbindung.A recess 13 for receiving a cooling water pump, not shown, is arranged on one end of the cylinder block 3. This conveys cooling water to the cylinder rows 1, 2 via two outflow openings 14, one of these outflow openings 14 being designed as an inlet opening 15 into a feed channel 16 and the other being formed in a downward-directed outflow flange 17.
Both rows of cylinders have feed channels 16 arranged adjacent to the parting planes T - T below and parallel to the longitudinal axis A in a lower wall 18, 19. These channels 16 are connected to the cooling water jackets 10 and second connections 21 to the channels 11 via calibrated first connections 20 provided with a defined cross section.

Der Zuführkanal 16 der beabstandet zur Kühlwasserpumpe liegenden Zylinderreihe ist mittels eines Verbindungskanales 22 an den Abströmflansch 17 angeschlossen. Ein Abschnitt 23 dieses Kanales 22 ist als Wärmetauscherrohr 24 ausgebildet und verläuft mit Kühlrippen 25 auf seinem Außenmantel versehen in einer Ölwanne 26 der Brennkraftmaschine. Das Rohr 24 überbrückt die Teilungsebene E - E und ist an einen weiteren, in der unteren Wandung 19 ausgebildeten Abschnitt 27 des Verbindungskanales 22 angeschlossen. The feed channel 16 which is spaced apart from the cooling water pump The cylinder bank is connected to the outflow flange 17 by means of a connecting channel 22 connected. A section 23 of this channel 22 is used as a heat exchanger tube 24 formed and runs with cooling fins 25 provided on its outer jacket in an oil pan 26 of the internal combustion engine. The tube 24 bridges the Partition plane E - E and is on another, in the lower wall 19th trained section 27 of the connecting channel 22 connected.

Parallel zur Längsachse A verlaufend sind in oberen Wandungen 28, 29 der Kurbelgehäusehälften 1, 2 dementsprechende Abführkanäle 30 angeordnet, die mit den Kühlmänteln 10 und den Kanälen 11 der Zylinderköpfe 7 verbunden sind. Benachbart der Stirnseite 12 ist ein als Querkanal 31 ausgebildeter Sammelkanal in den Wandungen 28, 29 angeordnet, welcher über einen Abströmstutzen 32 mit einem nicht gezeigten Wasser/Luftwärmetauscher verbunden ist.Running parallel to the longitudinal axis A are in the upper walls 28, 29 of the Crankcase halves 1, 2 corresponding discharge channels 30 arranged are connected to the cooling jackets 10 and the channels 11 of the cylinder heads 7. Adjacent to the end face 12 is a collecting channel designed as a transverse channel 31 arranged in the walls 28, 29, which with an outlet 32 with a water / air heat exchanger, not shown, is connected.

Die Zuführ- und Abführkanäle 16 und 30, der Querkanal 31 und der Abschnitt 27 des Verbindungskanales 22 sind in die Wandungen 18, 19, 28, 29 eingegossen.The feed and discharge channels 16 and 30, the transverse channel 31 and the section 27 of the connecting channel 22 are cast into the walls 18, 19, 28, 29.

Im Betrieb der Brennkraftmaschine fördert die Kühlwasserpumpe entlang der eingezeichneten Richtungspfeile einen Kühlwasserstrom über die Eintrittsöffnung 15 bzw. den Verbindungskanal 22 in die Zuführkanäle 16, von welchen der Wasserstrom von der Stirnseite 12 aus entlang der Achse A gemäß der Querschnitte der Verbindungen 20 und 21 auf die Kühlmäntel 10 und die Zylinderköpfe 7 aufgeteilt wird. Die Köpfe 7 werden im Querstrom durchflossen und die erwärmten Teilströme den Abführkanälen 30 zugeführt. In diesen Abführkanälen 30 strömt das Wasser zurück bis zu dem benachbart der Stirnseite 12 liegenden Querkanal 31 und zu dessen Abströmstutzen 32.During operation of the internal combustion engine, the cooling water pump conveys along the drawn arrows a cooling water flow over the inlet opening 15 or the connecting channel 22 into the feed channels 16, of which the Water flow from the end face 12 along the axis A according to the Cross sections of the connections 20 and 21 to the cooling jackets 10 and Cylinder heads 7 is divided. The heads 7 are traversed in cross flow and the heated partial flows are fed to the discharge channels 30. In these Drainage channels 30, the water flows back to the adjacent to the End face 12 lying transverse channel 31 and to its outflow connection 32.

In der Warmlaufphase nach dem Kaltstart erwärmt das durch das Wärmetauscherrohr 24 strömende Wasser den durch eine Ölstandslinie S angedeuteten Ölsumpf, so daß die Brennkraftmaschine schneller ihre Betriebstemperatur erreicht und infolge dessen die Schadstoffemission verringert ist. Aufgrund der größeren Wärmespeicherkapazität von Wasser im Vergleich zu Öl ist die Verrippung zur Erzielung eines möglichst guten Wärmeüberganges im Öl liegend angeordnet.
Im Dauerbetrieb der Brennkraftmaschine erreicht das Öl eine höhere Temperatur als das durch das Rohr 24 strömende Wasser, so daß das Öl gekühlt wird.In the warm-up phase after the cold start, the water flowing through the heat exchanger tube 24 heats the oil sump indicated by an oil level line S, so that the internal combustion engine reaches its operating temperature more quickly and as a result the pollutant emission is reduced. Due to the larger heat storage capacity of water compared to oil, the ribbing is arranged lying in the oil to achieve the best possible heat transfer.
During continuous operation of the internal combustion engine, the oil reaches a higher temperature than the water flowing through the pipe 24, so that the oil is cooled.

Claims (8)

  1. An internal-combustion engine with two rows of cylinders, a cooling-water pump arranged at the front end of a cylinder block (3) of one row of cylinders, a connecting duct (22) leading below a longitudinal axis (A) of the crankshaft from the pump to the other row of cylinders, and cooling-water jackets (10) and cylinder heads (7) traversed in transverse flow, wherein cooling water flowing away from the cylinder rows is received by a collecting duct arranged above the longitudinal axis (A), and a supply duct (16) for cooling water extending below and parallel to the longitudinal axis (A) is arranged in a lower wall (18, 19) of the crankcase (1, 2) or cylinder housing (3, 4) of each cylinder row (1, 2), characterized in that removal ducts (30) are integrated in an upper wall (28, 29) of the crankcase (1, 2) or cylinder housing (3, 4) in the same way that the supply ducts are integrated in a lower wall of each cylinder row, and the supply and removal ducts are arranged adjacent to a separation plane (T-T) between cylinder blocks (3, 4) and cylinder heads (7) in the immediately vicinity of the combustion chambers.
  2. An internal-combustion engine according to Claim 1, characterized in that the removal ducts (30) are connected to one another by way of a collecting duct constructed in the form of a transverse duct (31) and arranged in the upper wall (28, 29) adjacent to a front end (12) of the internal-combustion engine.
  3. An internal-combustion engine according to Claim 1, characterized in that an entry opening (15) of a supply duct (16) is arranged in a depression (13) - receiving the cooling-water pump - in one cylinder block (3).
  4. An internal-combustion engine according to Claim 1, characterized in that the connecting duct (22) is arranged extending in part in an oil sump (26) of the internal-combustion engine.
  5. An internal-combustion engine according to Claim 1, characterized in that each supply duct (16) provided with first and second connexions (20 and 21 respectively) is connected to the cooling jacket (10) and the cylinder head (7) respectively.
  6. An internal-combustion engine according to Claim 2, characterized in that the supply ducts (16), the removal ducts (30), the transverse duct (31) and in part the connecting duct (22) are integrally cast in the walls (18, 19, 28, 29).
  7. An internal-combustion engine according to Claims 6 and 4, characterized in that the portion (23) extending in the oil sump (26) is constructed as a heat-exchanger pipe (24) provided with cooling ribs (25) on its outer jacket.
  8. An internal-combustion engine according to Claim 2, characterized in that the transverse duct (31) is arranged adjacent to the front end (12) carrying the cooling-water pump.
EP94108066A 1993-07-02 1994-05-26 Internal combustion engine with two cylinder banks Expired - Lifetime EP0632190B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4322030A DE4322030A1 (en) 1993-07-02 1993-07-02 Internal combustion engine with two rows of cylinders
DE4322030 1993-07-02

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EP0632190A1 EP0632190A1 (en) 1995-01-04
EP0632190B1 true EP0632190B1 (en) 1998-04-15

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EP94108066A Expired - Lifetime EP0632190B1 (en) 1993-07-02 1994-05-26 Internal combustion engine with two cylinder banks

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US (1) US5487363A (en)
EP (1) EP0632190B1 (en)
JP (1) JP3645590B2 (en)
KR (1) KR100341067B1 (en)
DE (2) DE4322030A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19628762A1 (en) * 1996-07-17 1998-01-22 Porsche Ag Cooling circuit of an internal combustion engine
DE10040475C1 (en) * 2000-08-18 2001-08-30 Porsche Ag Crankcase for an internal combustion engine, in particular for a boxer engine
US6408803B1 (en) * 2000-10-19 2002-06-25 Robert M. Atkins Liquid cooling system and retrofit for horizontally opposed air cooled piston aircraft engines
US7021250B2 (en) 2003-06-11 2006-04-04 Daimlerchrysler Corporation Precision cooling system
JP4892020B2 (en) * 2009-02-25 2012-03-07 日本サーモスタット株式会社 Cooling water passage device in an internal combustion engine
US8215283B2 (en) * 2009-04-06 2012-07-10 Honda Motor Co., Ltd. Cooling system for variable cylinder engines
DE102015013202B4 (en) 2015-10-09 2020-09-10 Deutz Aktiengesellschaft Fluid circuit of an internal combustion engine
DE102019006664A1 (en) 2019-09-23 2021-03-25 Deutz Aktiengesellschaft Internal combustion engine with an oil cooler integrated in the cylinder crankcase and a cooling water control

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Publication number Priority date Publication date Assignee Title
US1958156A (en) * 1930-09-29 1934-05-08 William B Whelan Internal combustion engine
FR738122A (en) * 1932-06-03 1932-12-21 Oil cooler for combustion machines
US2111828A (en) * 1933-10-11 1938-03-22 Weaver William Arthur Compression-ignition internal combustion engine
GB444488A (en) * 1934-09-18 1936-03-18 Arthur Alexander Rubbra Improvements in liquid cooling systems for internal combustion engines
GB444888A (en) * 1934-09-24 1936-03-24 Gordon George Crowhurst Improvements in electric accumulators used for storage and supply of electrical energy
US2151423A (en) * 1937-05-13 1939-03-21 Ford Motor Co Internal combustion engine
US2914045A (en) * 1956-03-12 1959-11-24 Ferguson Res Ltd Harry Internal combustion engine
US5058535A (en) * 1988-04-28 1991-10-22 Teledyne Industries, Inc. Parallel flow coolant circuit for internal combustion aircraft engines

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DE4322030A1 (en) 1995-01-12
JPH07139348A (en) 1995-05-30
US5487363A (en) 1996-01-30
DE59405682D1 (en) 1998-05-20
JP3645590B2 (en) 2005-05-11
EP0632190A1 (en) 1995-01-04
KR950003600A (en) 1995-02-17
KR100341067B1 (en) 2002-11-04

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