EP0648927A1 - Crankcase for V-engine - Google Patents

Crankcase for V-engine Download PDF

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Publication number
EP0648927A1
EP0648927A1 EP94115545A EP94115545A EP0648927A1 EP 0648927 A1 EP0648927 A1 EP 0648927A1 EP 94115545 A EP94115545 A EP 94115545A EP 94115545 A EP94115545 A EP 94115545A EP 0648927 A1 EP0648927 A1 EP 0648927A1
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EP
European Patent Office
Prior art keywords
main
crankshaft
crankcase
bearing
window
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.)
Granted
Application number
EP94115545A
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German (de)
French (fr)
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EP0648927B1 (en
Inventor
Friedrich Prof.Dr.-Ing. Indra
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Adam Opel GmbH
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Adam Opel GmbH
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Publication of EP0648927A1 publication Critical patent/EP0648927A1/en
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    • 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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0002—Cylinder arrangements
    • F02F7/0012—Crankcases of V-engines
    • 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
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • 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
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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

Definitions

  • the invention relates to a housing for an internal combustion engine with V-shaped cylinders, in which the two cylinder banks, each occupied by at least two cylinders, form a part with the crankcase and in the crankcase bearing seats are provided for receiving the main bearings of a crankshaft, the oil supply of which a main oil channel running parallel to the crankshaft axis between the two cylinder banks and supply channels branching off from this take place, the supply channels running in the walls delimiting the chambers of the crank chamber in the longitudinal direction of the internal combustion engine.
  • a housing of this type is described in DE-OS 39 14 124.
  • the bearing blocks are formed by walls arranged transversely to the longitudinal axis of the crankshaft within the crankcase, which walls at least above the crankshaft divide the space of the crankcase into several chambers.
  • the supply ducts run within these walls between the main oil duct and the main crankshaft bearings.
  • the gas in the crankcase is set into a pulsating movement from the underside of the pistons moving in the cylinders, this pulsation between the individual crank chamber he follows. Energy is consumed, the greater the flow resistance for the gas pulsating between the individual chambers, the greater the amount.
  • the invention has for its object to provide a generic housing for an internal combustion engine, in which despite the arrangement of oil supply channels between a main oil channel arranged above the crankshaft and the topmost point of the main crankshaft bearings in the walls delimiting the chambers of the crank chamber in the longitudinal direction effectively larger Windows near the lower cylinder edges can be provided.
  • this object is achieved in that the walls delimiting the crank chamber in the longitudinal direction of the internal combustion engine are provided with a window which is continuous over the width of the walls, and the window space is arranged between that above the window Main oil channel and the crankshaft main bearing arranged below the window is bridged by a pipeline.
  • a window with a maximum passage cross section can be provided very close to the lower cylinder edges in the partitions between the chambers of the crank chamber, so that the gas pulsation between the adjacent chambers can be compensated for at relatively low flow rates and in the shortest possible way.
  • the pump power on the underside of the piston and the gas speed in the crankcase are reduced.
  • the gas movement caused by the pulsation largely runs above the crankshaft.
  • the oil movement in the crankcase is hardly affected. Nevertheless, an oil supply to the top point of the respective main crankshaft bearing is possible.
  • the pipeline running in the opening of the window only slightly reduces the cross section and hardly affects the pressure equalization between the adjacent chambers of the crank chamber.
  • the pipeline is advantageously formed by a tube which is held in a bore in the bearing block of the main crankshaft bearing and in a bore of the cylinder block which intersects the main oil channel.
  • the bore can be drilled during the machining of the cylinder block without additional time, as can the pressing of the pipe.
  • the tube can be a thin-walled tube which is light in weight and occupies little cross-sectional area at the window. This is compared to a housing according to DE-PS 10 50 600, in which the main crankshaft bearings are also supplied by an overlying main oil channel and in which the Oil supply channel through a pressure screw leads in the present invention, both a different task and a novel solution.
  • this pressure screw has much larger dimensions than a thin-walled tube and therefore also covers a substantially larger proportion of the passage cross section of the window.
  • a reference to the optimization of this passage cross section is not given in DE-PS 10 50 600.
  • the bore in the bearing bracket is coaxial with the bore in the cylinder block, so that a straight tube from the direction of the main crankshaft bearing can be pressed into the bores holding the tube.
  • the housing 1 is essentially formed by a cylinder block 2 and a crankcase frame 3.
  • the cylinder block 2 has two cylinder banks 4 and 5 arranged in a V-shape with respect to one another.
  • cylinders 6 which open down into a crank chamber 7 of a crankcase, which is divided transversely to the longitudinal axis of the housing 1 by walls 8 into several chambers 9.
  • the walls 8 are each part of a bearing block 10 for receiving main bearings of a crankshaft mounted in the housing 1.
  • the bearing chairs 10 are closed by bearing caps 11, which are part of the crankcase frame 3.
  • the walls 8 are perforated immediately below the lower edges of the cylinders 6 with a window 12 which, taking into account the strength requirements of the housing 1, has maximum values both in width and in height.
  • a main oil channel 13 runs in the cylinder block 2 parallel to the longitudinal axis of the crankshaft and supplies the important lubrication points of the internal combustion engine with oil from an oil pump. From the main oil channel 13 to the uppermost points 14 of the main crankshaft bearings, a pipe 15 is laid, which crosses the surface of the window 12.
  • This pipeline 15 is formed by a tube 16, which is pressed from the main crankshaft bearing through a bore 17 in the bearing bracket 10 and an extension of the bore 17 bore 18 in the cylinder block 2 to the main oil passage 13.
  • the walls 8 between the chambers 9 of the crank chamber 7 can thus be provided with a window 12 which is continuous in width.
  • These windows 12 can also be arranged directly under the lower edges of the cylinders 6.
  • the large window cross section that is possible at the most effective location for pulsation compensation between the adjacent chambers 9 enables an optimal effect.
  • the pulsation occurs at a low gas speed. It uses so little energy and does not have a negative effect on the oil mist formation in the crankcase.
  • oil can be brought directly from the main oil channel 13 arranged centrally between the cylinder banks 4 and 5 to the uppermost point 14 of the main crankshaft bearings through the pipelines 15.
  • the invention is not limited to the exemplary embodiment described. It corresponds to e.g. B. also of the invention, if instead of a straight tube 16, a curved tube between a branch from the main oil passage borehole is guided across the window 12 in the wall 8 to a hole in the uppermost point of the bearing block for a main crankshaft bearing.
  • a straight tube 16 a curved tube between a branch from the main oil passage borehole is guided across the window 12 in the wall 8 to a hole in the uppermost point of the bearing block for a main crankshaft bearing.
  • Such an implementation would be e.g. B. useful if the main oil passage 13 is not arranged in the central plane of the cylinder block 2.

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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)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The invention relates to a crankcase for an internal combustion engine with cylinders arranged in a V-configuration, in which a main oil gallery (13) is provided between the two cylinder banks (4, 5). The object of the invention is to supply the uppermost points (14) of the crankshaft main bearings with oil from the main oil gallery (13) and at the same time to provide broad windows (12), extending transversely over the crankshaft main bearings, in the walls (8) subdividing the crankcase in the upper area, in order to alleviate the disadvantages produced by the gas pulsation in the crank chamber. This object is achieved by the arrangement of a pipe (16) between the main oil gallery (13) and the uppermost point (14) of each crankshaft main bearing. The pipes (16) which carry the oil to the required points scarcely reduce the effective cross-section of the windows (12). As a result, despite a window (12) provided transversely above the crankshaft main bearings, the crankshaft main bearings can by simple means be supplied with oil at the optimum point (14) from the overhead main oil gallery (13). <IMAGE>

Description

Die Erfindung betrifft ein Gehäuse für eine Brennkraftmaschine mit V-förmig angeordneten Zylindern, bei dem die jeweils mit mindestens zwei Zylindern besetzten beiden Zylinderbänke mit dem Kurbelgehäuse zusammen ein Teil bilden und im Kurbelgehäuse Lagerstühle für die Aufnahme der Hauptlager einer Kurbelwelle vorgesehen sind, deren Ölversorgung durch einen zwischen den beiden Zylinderbänken parallel zur Kurbelwellenachse verlaufenden Hauptölkanal sowie von diesem abzweigenden Zuführkanälen erfolgt, wobei die Zuführkanäle in den die Kammern des Kurbelraumes in Längsrichtung der Brennkraftmaschine begrenzenden Wänden verlaufen.The invention relates to a housing for an internal combustion engine with V-shaped cylinders, in which the two cylinder banks, each occupied by at least two cylinders, form a part with the crankcase and in the crankcase bearing seats are provided for receiving the main bearings of a crankshaft, the oil supply of which a main oil channel running parallel to the crankshaft axis between the two cylinder banks and supply channels branching off from this take place, the supply channels running in the walls delimiting the chambers of the crank chamber in the longitudinal direction of the internal combustion engine.

Ein Gehäuse dieser Art ist mit DE-OS 39 14 124 beschrieben. Bei diesem bekannten Gehäuse werden die Lagerstühle von quer zur Kurbelwellenlängsachse angeordneten Wänden innerhalb des Kurbelgehäuses gebildet, die damit zumindest oberhalb der Kurbelwelle den Raum des Kurbelgehäuses in mehrere Kammern unterteilen. Innerhalb dieser Wände verlaufen die Zuführkanäle zwischen dem Hauptölkanal und den Kurbelwellenhauptlagern.A housing of this type is described in DE-OS 39 14 124. In this known housing, the bearing blocks are formed by walls arranged transversely to the longitudinal axis of the crankshaft within the crankcase, which walls at least above the crankshaft divide the space of the crankcase into several chambers. The supply ducts run within these walls between the main oil duct and the main crankshaft bearings.

Beim motorischen Betrieb wird das im Kurbelgehäuse befindliche Gas von der Unterseite der in den Zylindern sich bewegenden Kolben in eine pulsierende Bewegung versetzt, wobei diese Pulsation zwischen den einzelnen Kurbelraumkammern erfolgt. Dabei wird Energie verbraucht, deren Menge um so größer ist, je höher der Strömungswiderstand für das zwischen den einzelnen Kammern pulsierende Gas ist.During engine operation, the gas in the crankcase is set into a pulsating movement from the underside of the pistons moving in the cylinders, this pulsation between the individual crank chamber he follows. Energy is consumed, the greater the flow resistance for the gas pulsating between the individual chambers, the greater the amount.

Um diesen Strömungswiderstand zu reduzieren ist es insbesondere bei Brennkraftmaschinen mit in Reihe angeordneten Zylindern bekannt, die zwischen den Kammern des Kurbelgehäuses zur Aufnahme der Lagerstühle für die Kurbelwelle vorgesehenen Wände mit Fenstern zu versehen, durch welche der Druckaustausch zwischen den benachbarten Kammern erleichtert wird (DE-PS 31 07 461). Dabei sind die Fenster über die gesamte Breite des Kurbelwellenhauptlagers angeordnet, so daß eine direkte Ölzuführung am obersten Punkt des Lagers nicht möglich ist, sondern ein Zuführkanal seitlich an das Lager herangeführt werden muß, wie dies z. B. mit DE-PS 38 15 508 für eine Reihenbrennkraftmaschine gezeigt ist. Hier wird das Öl zu einem Lagerpunkt geführt, der für die Schmierverhältnisse ungünstiger liegt als der oberste Lagerpunkt, da dieser Lagerpunkt bereits in Bereichen liegt, die am Aufbau eines tragenden Ölfilms beteiligt sind.In order to reduce this flow resistance, it is known, in particular in internal combustion engines with cylinders arranged in series, to provide the walls between the chambers of the crankcase for receiving the bearing seats for the crankshaft with windows through which the pressure exchange between the adjacent chambers is facilitated. PS 31 07 461). The windows are arranged over the entire width of the main crankshaft bearing, so that a direct oil supply at the uppermost point of the bearing is not possible, but a supply channel must be brought laterally to the bearing, as z. B. with DE-PS 38 15 508 for a series internal combustion engine is shown. Here, the oil is led to a bearing point that is less favorable for the lubrication conditions than the top bearing point, since this bearing point is already in areas that are involved in building a load-bearing oil film.

Der Erfindung liegt die Aufgabe zugrunde, ein gattunsgemäßes Gehäuse für eine Brennkraftmaschine zu schaffen, bei dem trotz Anordnung von Öl-Zuführkanälen zwischen einem oberhalb der Kurbelwelle angeordneten Hauptölkanal und jeweils dem obersten Punkt der Kurbelwellenhauptlager in den die Kammern des Kurbelraumes in Längsrichtung begrenzenden Wänden wirksam größere Fenster nahe der unteren Zylinderkanten vorgesehen werden können.The invention has for its object to provide a generic housing for an internal combustion engine, in which despite the arrangement of oil supply channels between a main oil channel arranged above the crankshaft and the topmost point of the main crankshaft bearings in the walls delimiting the chambers of the crank chamber in the longitudinal direction effectively larger Windows near the lower cylinder edges can be provided.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die den Kurbelraum in Längsrichtung der Brennkraftmaschine begrenzenden Wände mit einem über die Breite der Wände durchgehenden Fenster versehen sind und der Fensterraum zwischen dem oberhalb des Fensters angeordneten Hauptölkanal und dem unterhalb des Fensters angeordneten Kurbelwellenhauptlager durch eine Rohrleitung überbrückt ist.According to the invention, this object is achieved in that the walls delimiting the crank chamber in the longitudinal direction of the internal combustion engine are provided with a window which is continuous over the width of the walls, and the window space is arranged between that above the window Main oil channel and the crankshaft main bearing arranged below the window is bridged by a pipeline.

Durch eine solche Maßnahme kann in den Trennwänden zwischen den Kammern des Kurbelraumes ein Fenster mit maximalem Durchlaßquerschnitt sehr nahe an den unteren Zylinderkanten vorgesehen werden, so daß sich die Gaspulsation zwischen den benachbarten Kammern bei relativ geringen Strömungsgeschwindigkeiten und auf kürzestem Wege ausgleichen können. Die Pumpleistung an der Kolbenunterseite und die Gasgeschwindigkeit im Kurbelraum wird somit reduziert. Die durch die Pulsation hervorgerufene Gasbewegung verläuft weitestgehend oberhalb der Kurbelwelle. Die Ölbewegung im Kurbelraum wird damit kaum belastet. Trotzdem ist eine Ölzuführung an den obersten Punkt des jeweiligen Kurbelwellenhauptlagers möglich. Die dafür in der Öffnung des Fensters verlaufende Rohrleitung verringert den Querschnitt nur unwesentlich und beeinträchtigt den Druckausgleich zwischen den benachbarten Kammern des Kurbelraumes kaum.By such a measure, a window with a maximum passage cross section can be provided very close to the lower cylinder edges in the partitions between the chambers of the crank chamber, so that the gas pulsation between the adjacent chambers can be compensated for at relatively low flow rates and in the shortest possible way. The pump power on the underside of the piston and the gas speed in the crankcase are reduced. The gas movement caused by the pulsation largely runs above the crankshaft. The oil movement in the crankcase is hardly affected. Nevertheless, an oil supply to the top point of the respective main crankshaft bearing is possible. The pipeline running in the opening of the window only slightly reduces the cross section and hardly affects the pressure equalization between the adjacent chambers of the crank chamber.

Die Rohrleitung ist vorteilhafterweise durch ein Rohr gebildet, welches in einer Bohrung des Lagerstuhls des Kurbelwellenhauptlagers sowie einer den Hauptölkanal schneidenden Bohrung des Zylinderblockes gehalten ist.The pipeline is advantageously formed by a tube which is held in a bore in the bearing block of the main crankshaft bearing and in a bore of the cylinder block which intersects the main oil channel.

Dadurch kann mit geringem Aufwand die Rohrleitung zwischen Hauptölkanal und Kurbelwellenhauptlager realisiert werden. Die Bohrung ist während der Bearbeitung des Zylinderblockes ohne zusätzliche Zeit einbringbar, ebensowie das Einpressen des Rohres. Das Rohr kann ein dünnwandiges Rohr sein, welches nur geringes Gewicht hat und wenig Querschnittsfläche am Fenster belegt. Damit besteht gegenüber einem Gehäuse nach der DE-PS 10 50 600, bei dem die Kurbelwellenhauptlager gleichfalls von einem darüberliegenden Ölhauptkanal versorgt werden und bei dem der Ölzuführkanal durch eine Druckschraube führt, bei der vorliegenden Erfindung sowohl eine andere Aufgabe als auch eine neuartige Lösung. Diese Druckschraube hat aus Festigkeitsgründen sowie wegen der notwendigen Werkzeugangriffsflächen wesentlich größere Dimensionen als ein dünnwandiges Rohr und verdeckt somit auch einen wesentlich größeren Anteil des Durchlaßquerschnittes des Fensters. Ein Hinweis zur Optimierung dieses Durchlaßquerschnittes ist mit DE-PS 10 50 600 nicht gegeben.As a result, the pipeline between the main oil channel and the main crankshaft bearing can be implemented with little effort. The bore can be drilled during the machining of the cylinder block without additional time, as can the pressing of the pipe. The tube can be a thin-walled tube which is light in weight and occupies little cross-sectional area at the window. This is compared to a housing according to DE-PS 10 50 600, in which the main crankshaft bearings are also supplied by an overlying main oil channel and in which the Oil supply channel through a pressure screw leads in the present invention, both a different task and a novel solution. For reasons of strength and because of the necessary tool engagement surfaces, this pressure screw has much larger dimensions than a thin-walled tube and therefore also covers a substantially larger proportion of the passage cross section of the window. A reference to the optimization of this passage cross section is not given in DE-PS 10 50 600.

In vorteilhafter Weise ist die Bohrung im Lagerstuhl gleichachsig mit der Bohrung im Zylinderblock, so daß ein gerades Rohr aus Richtung des Kurbelwellenhauptlagers in die das Rohr haltenden Bohrungen gedrückt werden kann.Advantageously, the bore in the bearing bracket is coaxial with the bore in the cylinder block, so that a straight tube from the direction of the main crankshaft bearing can be pressed into the bores holding the tube.

Ein Ausführungsbeispiel der Erfindung ist nachstehend anhand von Zeichnungen näher beschrieben. Es zeigen

Fig. 1:
die Stirnseite eines Gehäuses für eine Brennkraftmaschine mit V-förmig angeordneten Zylindern;
Fig. 2:
einen Schnitt durch das Gehäuse nach Fig. 1 entlang der Linie A - A.
An embodiment of the invention is described below with reference to drawings. Show it
Fig. 1:
the front side of a housing for an internal combustion engine with V-shaped cylinders;
Fig. 2:
a section through the housing of FIG. 1 along the line A - A.

Das Gehäuse 1 wird im wesentlichen durch einen Zylinderblock 2 sowie einen Kurbelgehäuserahmen 3 gebildet. Der Zylinderblock 2 weist zwei in V-Form zueinander angeordnete Zylinderbänke 4 und 5 auf. In den Zylinderbänken 4 und 5 befinden sich Zylinder 6, die nach unten in einen Kurbelraum 7 eines Kurbelgehäuses münden, welcher quer zur Längsachse des Gehäuses 1 durch Wände 8 in mehrere Kammern 9 unterteilt ist. Die Wände 8 sind jeweils Teil eines Lagerstuhls 10 für die Aufnahme von Hauptlagern einer im Gehäuse 1 gelagerten Kurbelwelle. Die Lagerstühle 10 werden geschlossen von Lagerdeckeln 11, die Teil des Kurbelgehäuserahmens 3 sind.The housing 1 is essentially formed by a cylinder block 2 and a crankcase frame 3. The cylinder block 2 has two cylinder banks 4 and 5 arranged in a V-shape with respect to one another. In the cylinder banks 4 and 5 there are cylinders 6, which open down into a crank chamber 7 of a crankcase, which is divided transversely to the longitudinal axis of the housing 1 by walls 8 into several chambers 9. The walls 8 are each part of a bearing block 10 for receiving main bearings of a crankshaft mounted in the housing 1. The bearing chairs 10 are closed by bearing caps 11, which are part of the crankcase frame 3.

Die Wände 8 sind unmittelbar unterhalb der unteren Kanten der Zylinder 6 mit einem Fenster 12 durchbrochen, welches unter Berücksichtigung der Festigkeitsanforderungen des Gehäuses 1 sowohl in der Breite als auch in der Höhe Maximalwerte aufweisen. Oberhalb der Lagerstühle 10 für die Hauptlager der Kurbelwelle verläuft im Zylinderblock 2 parallel zur Längsachse der Kurbelwelle ein Hauptölkanal 13, welcher von einer Ölpumpe her die wichtigen Schmierstellen der Brennkraftmaschine mit Öl versorgt. Von dem Hauptölkanal 13 ist zu den obersten Punkten 14 der Kurbelwellenhauptlager jeweils eine Rohrleitung 15 verlegt, welche die Fläche des Fensters 12 überquert.The walls 8 are perforated immediately below the lower edges of the cylinders 6 with a window 12 which, taking into account the strength requirements of the housing 1, has maximum values both in width and in height. Above the bearing blocks 10 for the main bearings of the crankshaft, a main oil channel 13 runs in the cylinder block 2 parallel to the longitudinal axis of the crankshaft and supplies the important lubrication points of the internal combustion engine with oil from an oil pump. From the main oil channel 13 to the uppermost points 14 of the main crankshaft bearings, a pipe 15 is laid, which crosses the surface of the window 12.

Diese Rohrleitung 15 wird durch ein Rohr 16 gebildet, welches vom Kurbelwellenhauptlager her durch eine Bohrung 17 im Lagerstuhl 10 sowie eine in Verlängerung der Bohrung 17 verlaufenden Bohrung 18 im Zylinderblock 2 zu dem Hauptölkanal 13 hin eingepreßt ist.This pipeline 15 is formed by a tube 16, which is pressed from the main crankshaft bearing through a bore 17 in the bearing bracket 10 and an extension of the bore 17 bore 18 in the cylinder block 2 to the main oil passage 13.

Bei einem derartigen Gehäuse 1 können somit die Wände 8 zwischen den Kammern 9 des Kurbelraumes 7 mit einem in der Breite durchgängigen Fenster 12 versehen werden. Diese Fenster 12 können auch unmittelbar unter den unteren Kanten der Zylinder 6 angeordnet werden. Der damit mögliche große Fensterquerschnitt am wirksamsten Ort für einen Pulsationsausgleich zwischen den benachbarten Kammern 9 ermöglicht eine optimale Wirkung. Die Pulsation erfolgt mit geringer Gasgeschwindigkeit. Sie verbraucht so wenig Energie und wirkt nicht negativ auf die Ölnebelbildung im Kurbelgehäuse. Trotz der Fenster 12 über die Breite der Wände 8 zwischen den Kammern 9 kann aber von dem zentral zwischen den Zylinderbänken 4 und 5 angeordneten Hauptölkanal 13 Öl direkt zu dem obersten Punkt 14 der Kurbelwellenhauptlager durch die Rohrleitungen 15 gebracht werden. Die dafür zwischen dem Hauptölkanal 13 und den Kurbelwellenhauptlagern verlaufenden Rohre 16 kreuzen zwar die Fenster 12, reduzieren jedoch den Gasdurchsatz durch diese nicht merkbar.With a housing 1 of this type, the walls 8 between the chambers 9 of the crank chamber 7 can thus be provided with a window 12 which is continuous in width. These windows 12 can also be arranged directly under the lower edges of the cylinders 6. The large window cross section that is possible at the most effective location for pulsation compensation between the adjacent chambers 9 enables an optimal effect. The pulsation occurs at a low gas speed. It uses so little energy and does not have a negative effect on the oil mist formation in the crankcase. Despite the windows 12 across the width of the walls 8 between the chambers 9, however, oil can be brought directly from the main oil channel 13 arranged centrally between the cylinder banks 4 and 5 to the uppermost point 14 of the main crankshaft bearings through the pipelines 15. Cross the pipes 16 that run between the main oil channel 13 and the main crankshaft bearings the windows 12, however, do not noticeably reduce the gas throughput through them.

Die Erfindung ist nicht auf das beschriebene Ausführungsbeispiel begrenzt. Es entspricht z. B. ebenso der Erfindung, wenn anstelle eines geraden Rohres 16 ein gekrümmtes Rohr zwischen einer von dem Hauptölkanal abzweigenden Bohrung quer über das Fenster 12 in der Wand 8 zu einer Bohrung im obersten Punkt des Lagerstuhles für ein Kurbelwellenhauptlager geführt ist. Eine solche Ausführung wäre z. B. dann zweckmäßig, wenn der Hauptölkanal 13 nicht in der Mittelebene des Zylinderblockes 2 angeordnet ist.The invention is not limited to the exemplary embodiment described. It corresponds to e.g. B. also of the invention, if instead of a straight tube 16, a curved tube between a branch from the main oil passage borehole is guided across the window 12 in the wall 8 to a hole in the uppermost point of the bearing block for a main crankshaft bearing. Such an implementation would be e.g. B. useful if the main oil passage 13 is not arranged in the central plane of the cylinder block 2.

Claims (2)

Gehäuse für eine Brennkraftmaschine mit V-förmig angeordneten Zylindern, bei dem jeweils mit mindestens zwei Zylindern besetzte Zylinderbänke mit einem einen Kurbelraum umschließenden Kurbelgehäuse zusammen ein Teil bilden, im Kurbelgehäuse Lagerstühle für die Aufnahme der Hauptlager einer Kurbelwelle vorgesehen sind, welche Wände bilden und den Kurbelraum in Kammern unterteilen und die Ölversorgung der Hauptlager durch einen zwischen den beiden Zylinderbänken parallel zur Kurbelwellenachse verlaufenden Hauptölkanal sowie von diesem abzweigende in den die Kammern des in Längsrichtung der Brennkraftmaschine begrenzenden Wänden verlaufenden Zuführkanäle erfolgt, dadurch gekennzeichnet, daß die den Kurbelraum (7) in Längsrichtung der Brennkraftmaschine begrenzenden Wände (8) mit einem über die Breite der Wände (8) durchgehenden Fenster (12) versehen sind und der Fensterraum zwischen dem oberhalb des Fensters (12) angeordneten Hauptölkanal (13) und dem unterhalb des Fensters (12) angeordneten Kurbelwellenhauptlager durch eine den Zuführkanal bildende Rohrleitung (15) überbrückt ist.Housing for an internal combustion engine with V-shaped cylinders, in which each cylinder banks occupied by at least two cylinders together with a crankcase enclosing a crankcase form part, in the crankcase bearing seats are provided for receiving the main bearings of a crankshaft, which form walls and the crankcase divide into chambers and the oil supply to the main bearings is provided by a main oil duct running parallel to the crankshaft axis between the two cylinder banks and branching from this in the supply ducts running in the chambers of the walls delimiting in the longitudinal direction of the internal combustion engine, characterized in that the crank chamber (7) is arranged in the longitudinal direction walls of the internal combustion engine (8) are provided with a window (12) which is continuous over the width of the walls (8) and the window space between the main oil channel (13) arranged above the window (12) and that below the Window (12) arranged crankshaft main bearing is bridged by a pipeline (15) forming the feed channel. Gehäuse nach Anspruch 1, dadurch gekennzeichnet, daß die Rohrleitung (15) jeweils durch ein Rohr (16) gebildet ist, welches in einer Bohrung (17) des Lagerstuhls (10) des Kurbelwellenhauptlagers sowie einer den Hauptölkanal (13) schneidenden Bohrung (18) gehalten ist.Housing according to claim 1, characterized in that the pipeline (15) is formed in each case by a tube (16) which in a bore (17) of the bearing block (10) of the main crankshaft bearing and in a bore (18) intersecting the main oil channel (13) is held.
EP94115545A 1993-10-19 1994-10-04 Crankcase for V-engine Expired - Lifetime EP0648927B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4335492 1993-10-19
DE4335492A DE4335492A1 (en) 1993-10-19 1993-10-19 Housing for an internal combustion engine with V-shaped cylinders

Publications (2)

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EP0648927A1 true EP0648927A1 (en) 1995-04-19
EP0648927B1 EP0648927B1 (en) 1997-01-29

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EP94115545A Expired - Lifetime EP0648927B1 (en) 1993-10-19 1994-10-04 Crankcase for V-engine

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DE (2) DE4335492A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7387102B2 (en) 2002-11-26 2008-06-17 Fritz Winter Eisengiesserei Gmbh & Co. Kg Cast part for an internal combustion engine
DE102007025576A1 (en) 2007-04-10 2008-10-16 Bayerische Motoren Werke Aktiengesellschaft Housing for internal-combustion engine, has wall region with opening for gas exchange between chambers, where wall region is connected to web region to divide case into chambers, and opening arranged in web region

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10304971C5 (en) * 2002-11-26 2008-06-12 Fritz Winter Eisengiesserei Gmbh & Co. Kg Poured component for an internal combustion engine
DE10139045B4 (en) * 2001-08-08 2014-06-18 Bayerische Motoren Werke Aktiengesellschaft Crankcase for an internal combustion engine, in particular with mutually inclined cylinder rows, especially V-engine
DE10340157B4 (en) * 2003-09-01 2008-10-02 Audi Ag Device for media guidance in a cylinder crankcase
DE202012008860U1 (en) * 2012-09-17 2013-12-18 Voss Automotive Gmbh Compensation device for volume and / or pressure equalization in a line system

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Publication number Priority date Publication date Assignee Title
DE1050600B (en) * 1954-05-12 1959-02-12 Kloeckner Humboldt Deutz Ag Multi-part housing for an internal combustion engine with rows of cylinders arranged in a V shape
DE3107461A1 (en) * 1981-02-27 1982-11-11 Günter 8543 Hilpoltstein Elsbett HOUSING BLOCK FOR PISTON PISTON COMBUSTION ENGINES, IN PARTICULAR DIESEL ENGINES
US4945887A (en) * 1988-09-30 1990-08-07 Yamaha Hatsudoki Kabushiki Kaisha Crankcase vent system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1050600B (en) * 1954-05-12 1959-02-12 Kloeckner Humboldt Deutz Ag Multi-part housing for an internal combustion engine with rows of cylinders arranged in a V shape
DE3107461A1 (en) * 1981-02-27 1982-11-11 Günter 8543 Hilpoltstein Elsbett HOUSING BLOCK FOR PISTON PISTON COMBUSTION ENGINES, IN PARTICULAR DIESEL ENGINES
US4945887A (en) * 1988-09-30 1990-08-07 Yamaha Hatsudoki Kabushiki Kaisha Crankcase vent system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7387102B2 (en) 2002-11-26 2008-06-17 Fritz Winter Eisengiesserei Gmbh & Co. Kg Cast part for an internal combustion engine
DE102007025576A1 (en) 2007-04-10 2008-10-16 Bayerische Motoren Werke Aktiengesellschaft Housing for internal-combustion engine, has wall region with opening for gas exchange between chambers, where wall region is connected to web region to divide case into chambers, and opening arranged in web region

Also Published As

Publication number Publication date
DE59401700D1 (en) 1997-03-13
EP0648927B1 (en) 1997-01-29
DE4335492A1 (en) 1995-04-20

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