DE112005002884B4 - Internal combustion engine - Google Patents

Internal combustion engine Download PDF

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Publication number
DE112005002884B4
DE112005002884B4 DE112005002884.4T DE112005002884T DE112005002884B4 DE 112005002884 B4 DE112005002884 B4 DE 112005002884B4 DE 112005002884 T DE112005002884 T DE 112005002884T DE 112005002884 B4 DE112005002884 B4 DE 112005002884B4
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Germany
Prior art keywords
oil pan
oil
crankcase
light metal
internal combustion
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DE112005002884.4T
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German (de)
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DE112005002884A5 (en
Inventor
Dieter Höfler
Gerd Kronsteiner
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AKUSTIKKOMPETENZZENTRUM GES fur AKUSTIKFORSCHUNG MBH
Akustikkompetenzzentrum Gesellschaft fur Akustikforschung Mbh
AVL List GmbH
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AKUSTIKKOMPETENZZENTRUM GES fur AKUSTIKFORSCHUNG MBH
Akustikkompetenzzentrum Gesellschaft fur Akustikforschung Mbh
AVL List GmbH
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Priority claimed from AT21062004A external-priority patent/AT500853B8/en
Priority claimed from AT1762005A external-priority patent/AT501165B8/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
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/0068—Adaptations for other accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/24—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K6/485—Motor-assist type
    • 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
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/008—Sound insulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1815—Rotary generators structurally associated with reciprocating piston engines
    • 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
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2253/00—Other material characteristics; Treatment of material
    • F05C2253/14—Foam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Abstract

Ölwanne (101) für eine Brennkraftmaschine, welche zumindest teilweise aus porösem Material gefertigt ist, dadurch gekennzeichnet, dass die Ölwanne (101) eine selbsttragende Struktur (102) aus Leichtmetallschaum, vorzugsweise aus Aluminium- oder Magnesiumschaum, aufweist.Oil pan (101) for an internal combustion engine, which is at least partially made of porous material, characterized in that the oil pan (101) has a self-supporting structure (102) made of light metal foam, preferably of aluminum or magnesium foam.

Description

Die Erfindung betrifft eine Ölwanne für eine Brennkraftmaschine, welche zumindest teilweise aus porösem Material gefertigt ist.The invention relates to an oil pan for an internal combustion engine, which is at least partially made of porous material.

Aus der US 4 516 541 A ist eine Brennkraftmaschine bekannt, welche eine Gruppe von motorisch betriebenen Zylindern und eine andere Gruppe von als Verdichter betriebenen Zylindern aufweist. Auf der geteilten Kurbelwelle ist ein Schwungrad zwischen der Gruppe von motorisch betriebenen und der anderen Gruppe von als Verdichter betriebenen Zylindern angeordnet. Durch diese Anordnung können die Belastungen der Kurbelwelle verringert werden.From the US Pat. No. 4,516,541 For example, an internal combustion engine is known which comprises a group of engine-operated cylinders and another group of cylinders operated as a compressor. On the split crankshaft, a flywheel is disposed between the group of engine-operated and the other group of cylinders operated as a compressor. By this arrangement, the loads of the crankshaft can be reduced.

Untersuchungen an Brennkraftmaschinen zeigen, dass die Ölwanne zu jenen Bereichen zählt, die am meisten zur Geräuschabstrahlung beitragen.Investigations on internal combustion engines show that the oil pan is one of the areas that contributes the most to the noise emission.

Aus der US 5 452 693 A und der US 5 531 196 A sind Ölwannen für Brennkraft- maschinen bekannt, welche zur Schalldämmung eine Sandwich-Struktur aufweisen. Dabei ist zwischen einer Innenschicht und einer Außenschicht eine Zwischenschicht aus einem Isolierschaum angeordnet. Diese Zwischenschicht hat keinerlei tragende, sondern nur schallisolierende Funktion, weshalb weitere tragende Schichten erforderlich sind, was einen relativ hohen Herstellungsaufwand erfordert.From the US 5,452,693 A and the US 5 531 196 A Oil sumps for internal combustion engines are known, which have a sandwich structure for sound insulation. In this case, an intermediate layer of insulating foam is arranged between an inner layer and an outer layer. This intermediate layer has no supporting, but only sound-insulating function, which is why more supporting layers are required, which requires a relatively high production cost.

Die US 2004/ 0 154 576 A1 offenbart eine geschäumte Harzölwanne, wobei der Bläschenanteil des einen Körperabschnitt der Ölwanne bestimmenden Harzes größer ist, als des einen Flanschabschnitt bestimmenden Harzes. Bei dem porösen Material der Ölwanne handelt es sich um ein Kunststoffmaterial und nicht um einen Leichtmetallschaum.The US 2004/0 154 576 A1 discloses a foamed resin oil pan wherein the vesicle portion of the resin portion defining the body portion of the sump is larger than that of the flange portion defining resin. The porous material of the oil sump is a plastic material and not a light metal foam.

Aufgabe der Erfindung ist es, auf möglichst einfache Weise die Schallabstrahlung bei einer Ölwanne weiter zu vermindern.The object of the invention is to reduce as far as possible the sound radiation in an oil pan on.

Die Aufgabe der Erfindung wird dadurch gelöst, dass die Ölwanne eine selbsttragende Struktur aus Leichtmetallschaum, vorzugsweise aus Aluminium- oder Magnesiumschaum, aufweist. Der Leichtmetallschaum hat sowohl eine schalldämmende als auch eine tragende Funktion, so dass auf einen zusätzlichen Tragkörper verzichtet werden kann. Durch die Konstruktion der Ölwanne aus Leichtmetallschaum kann die Schallemission deutlich reduziert werden.The object of the invention is achieved in that the oil pan has a self-supporting structure made of light metal foam, preferably of aluminum or magnesium foam. The light metal foam has both a sound-absorbing and a supporting function, so that can be dispensed with an additional support body. The construction of the oil sump made of light metal foam can significantly reduce the noise emission.

Um die Ölrückhaltung der Ölwanne zu ermöglichen, ist vorgesehen, dass die Innenseite der Ölwanne mit einer öldichtenden Beschichtung versehen ist. Alternativ kann dabei auch vorgesehen sein, dass innerhalb der Ölwanne eine öldichte Innenwanne, vorzugsweise aus Kunststoff, angeordnet ist. Die Innenwanne aus Kunststoff stellt einen zusätzlichen Medienübergang dar und erhöht somit die Dämpfung. Besonders vorteilhaft ist es dabei, wenn die Innenwanne auch die Funktion einer Dichtung gegenüber dem anschließenden Kurbelgehäuse übernimmt. Der obere Rand der Innenwanne ist dabei als Dichtfläche ausgebildet.In order to enable oil retention of the oil sump, it is provided that the inside of the sump is provided with an oil-tight coating. Alternatively, it can also be provided that within the oil pan, an oil-tight inner tub, preferably made of plastic, is arranged. The inner tub made of plastic represents an additional media transition and thus increases the damping. It is particularly advantageous if the inner tub also assumes the function of a seal against the subsequent crankcase. The upper edge of the inner tub is designed as a sealing surface.

Durch den Einsatz von Leichtmetallschaum kann bei geringem Gewicht eine erhebliche Reduktion der Schallemission erreicht werden.Through the use of light metal foam can be achieved with low weight, a significant reduction in the noise emission.

Durch die geringe Festigkeit des Leichtmetallschaums sind besondere Konstruktionen zur Krafteinleitung erforderlich. Um eine sichere Befestigung der Ölwanne am Kurbelgehäuse über einen Flansch zu ermöglichen, ist vorgesehen, dass der Anschlussflansch eingeschäumte Auflagebleche und/oder Armierungen der Bohrung für die Befestigungsschrauben aufweist. Alternativ oder zusätzlich dazu kann vorgesehen sein, dass die Ölwanne zumindest einen Befestigungsflansch vorzugsweise aus Eisenwerkstoff aufweist, welcher über zumindest eine Wurzelstruktur im anschließenden Leichtmetallschaumkörper eingebettet ist. Durch die Wurzelstruktur werden die Kräfte aus den Flanschflächen in die Schaumstruktur eingeleitet. Die Größe der von der Wurzelstruktur bedeckten Fläche hängt dabei zum einen von der übertragenen Kraft und zum anderen von der zulässigen Spannung im Schaummaterial ab. Um die Schallabstrahlung nicht zu erhöhen, sollten aber Körperschallbrücken durch die Wurzelstruktur vermieden werden.Due to the low strength of the light metal foam special designs for force application are required. In order to enable a secure attachment of the oil pan to the crankcase via a flange, it is provided that the connecting flange has foamed bearing plates and / or reinforcements of the bore for the fastening screws. Alternatively or additionally, it may be provided that the oil sump has at least one fastening flange, preferably of iron material, which is embedded over at least one root structure in the adjoining light metal foam body. Through the root structure, the forces are introduced from the flange into the foam structure. The size of the area covered by the root structure depends on the one hand on the transmitted force and on the other of the allowable stress in the foam material. In order not to increase the sound radiation, however, structure-borne sound bridges through the root structure should be avoided.

Die Erfindung wird im Folgenden anhand der Figuren näher erläutert. Es zeigen:The invention will be explained in more detail below with reference to FIGS. Show it:

1 ein Kurbelgehäuse einer erfindungsgemäßen Brennkraftmaschine in einer Explosionsdarstellung; 1 a crankcase of an internal combustion engine according to the invention in an exploded view;

2 das Zylinder-Kurbelgehäuse in einer Seitenansicht; 2 the cylinder crankcase in a side view;

3 das Kurbelgehäuse in eine Kreuzriss; 3 the crankcase in a cross crack;

4 das Zylinder-Kurbelgehäuse in einem Schnitt gemäß der Linie IV-IV in 3; 4 the cylinder crankcase in a section along the line IV-IV in 3 ;

5 das Kurbelgehäuse in einem Schnitt gemäß der Linie V-V in 2; 5 the crankcase in a section along the line VV in 2 ;

6 eine erfindungsgemäße Ölwanne in einer Schrägansicht; 6 an oil pan according to the invention in an oblique view;

7 die Ölwanne in einem Detailschnitt in einer ersten Ausführungsvariante; 7 the oil pan in a detail section in a first embodiment;

8 die Ölwanne in einem Detailschnitt in einer zweiten Ausführungsvariante; 8th the oil pan in a detail section in a second embodiment;

9 Armierungen für einen Flansch der Ölwanne; und 9 Reinforcements for a flange of the oil sump; and

10 einen Flansch mit Wurzelstruktur. 10 a flange with root structure.

Das Kurbelgehäuse 1 ist in Leichtbauweise ausgeführt und weist eine Außenstruktur 2 aus Leichtmetallschaum, beispielsweise aus Aluminiumschaum oder Magnesiumschaum, auf. In die Außenstruktur 2 ist ein im Ausführungsbeispiel für alle Zylinder einteiliges Eingussstück 4 eingegossen, welches einen Skelettkern 5 bildet. Der Skelettkern 5 bildet die Hauptlagerwände 3, die Zylinderlaufflächen 6 und einen diese umgebenden Kühlwassermantel 7 aus, welcher in das Eingussstück 4 eingeformt ist.The crankcase 1 is made of lightweight construction and has an external structure 2 made of light metal foam, for example aluminum foam or magnesium foam. In the external structure 2 is a one-piece in the embodiment for all cylinders Eingussstück 4 poured in, which is a skeletal core 5 forms. The skeletal core 5 forms the main bearing walls 3 , the cylinder surfaces 6 and a surrounding water jacket 7 out, which in the Eingussstück 4 is formed.

Der Skelettkern 5 weist im Bereich der Kurbelgehäuseschürze zur Strukturversteifung Kreuzrippen 9 auf, welche in der Außenstruktur 2 eingebettet sind.The skeletal core 5 has in the area of the crankcase skirt for structural stiffening ribs 9 on which in the outside structure 2 are embedded.

Der Skelettkern 5 besteht vorteilhafter Weise aus topologieoptimierten ADI-Gusswerkstoff (Austempering Ductile Iron). Die Optimierung zielt auf ein Maximum an Steifigkeit bei einem Minimum an Material. Im Bereich der Hauptlagerwände 3 sowie der Zylinderlaufflächen 6 und der Außenwand des Kühlwassermantels 7 kann der Guss voll ausgeführt werden. In allen anderen Bereichen des Kurbelgehäuses 1 wird auf ein Minimum an Masse geachtet.The skeletal core 5 advantageously consists of topology-optimized ADI casting material (Austempering Ductile Iron). The optimization aims at maximum rigidity with a minimum of material. In the area of the main storage walls 3 as well as the cylinder surfaces 6 and the outer wall of the water jacket 7 the casting can be carried out fully. In all other areas of the crankcase 1 attention is paid to a minimum of mass.

Zur Verbesserung der Steifigkeit der Brennkraftmaschine werden die Hauptlagerdeckel 10 durch einen unteren Skelettkern 16 gebildet, welcher in eine untere Außenstruktur 17 eingegossen ist. Die untere Außenstruktur 17 und der untere Skelettkern 16 bilden einen am Befestigungsflansch 12 des Kurbelgehäuseoberteils 1a angeflanschten Kurbelgehäuseunterteil 18.To improve the rigidity of the internal combustion engine, the main bearing caps 10 through a lower skeletal core 16 formed, which in a lower outer structure 17 is poured. The lower outer structure 17 and the lower skeletal core 16 form one on the mounting flange 12 of the crankcase upper part 1a flanged crankcase lower part 18 ,

Die Skelettkerne 5, 16 werden im vorbearbeiteten Zustand in pulvermetallurgischen Verfahren in die Leichtmetallschäume der Außenstrukturen 2, 17 eingegossen. Dieser Leichtmetallschaummantel wird beschichtet und dient so als gas- und flüssigkeitsdichter Mantel. Durch die hervorragenden Dämpfungseigenschaften des Leichtmetallschaums wird das durch den Motorblock abgestrahlte Geräusch reduziert.The skeletal cores 5 . 16 are in the pre-machined state in powder metallurgy process in the light metal foams of the exterior structures 2 . 17 cast. This light metal foam jacket is coated and thus serves as a gas- and liquid-tight jacket. Due to the excellent damping properties of the light metal foam, the noise emitted by the engine block is reduced.

Im Kurbelgehäuse 1 ist eine gebaute Kurbelwelle 19 gelagert, auf welche mehrere Kolben 20 über Pleuelstangen 21 einwirken. Zwischen zwei benachbarten Kurbelwellenkröpfungen 22 der Kurbelwelle 19 für die angreifende Pleuelstangen 21 ist ein Schwungrad 23 angeordnet, welches den Motor 24 eines Starter-Generators 25 bildet. Das Schwungrad 23 ist dabei – in axialer Richtung betrachtet – etwa mittig auf der Kurbelwelle 19 angeordnet. Durch diese Anordnung kann ein sehr vorteilhaftes Drehschwingungsverhalten der Kurbelwelle 19 mit geringen akustischen Emissionen erzielt werden.In the crankcase 1 is a built crankshaft 19 stored on which several pistons 20 over connecting rods 21 act. Between two adjacent crankshaft cranks 22 the crankshaft 19 for the attacking connecting rods 21 is a flywheel 23 arranged, which is the engine 24 a starter generator 25 forms. The flywheel 23 is - viewed in the axial direction - approximately centered on the crankshaft 19 arranged. By this arrangement, a very advantageous torsional vibration behavior of the crankshaft 19 be achieved with low acoustic emissions.

Dadurch, dass der Rotor 24 des Starter-Generators 25 durch das Schwungrad 23 gebildet ist, kann die Brennkraftmaschine sehr kompakt ausgeführt werden und Teile können eingespart werden.Because of that the rotor 24 of the starter-generator 25 through the flywheel 23 is formed, the internal combustion engine can be made very compact and parts can be saved.

Darüber hinaus kann auf Räder-, Ketten und Riementriebe verzichtet werden, wenn die Nebenaggregate der Brennkraftmaschine elektrisch angetrieben werden. Dabei kann die Energieversorgung im Leerlauf bzw. bei Stillstand der Brennkraftmaschine von einer mit den Nebenaggregaten verbundenen Brennstoffzelle übernommen werden.In addition, can be dispensed with wheels, chains and belt drives when the ancillaries of the internal combustion engine are electrically powered. In this case, the power supply at idle or at standstill of the internal combustion engine can be taken over by a fuel cell connected to the ancillary units.

Der Abtrieb zum Getriebe kann entweder am Ende der Kurbelwelle 19 oder am Starter-Generator 25 erfolgen. Als Weiterbildung diese Konzeptes kann das Getriebegehäuse in den unteren Teil 18 des Kurbelgehäuses 2 integriert werden. Zur Aufnahme des Schwungrades 23 weist das Kurbelgehäuse 2, 18 eine zylindrische Ausbuchtung 26 auf.The output to the gearbox can either be at the end of the crankshaft 19 or at the starter generator 25 respectively. As a further development of this concept, the gearbox can be in the lower part 18 of the crankcase 2 to get integrated. For receiving the flywheel 23 has the crankcase 2 . 18 a cylindrical bulge 26 on.

Die 6 bis 10 zeigen eine Ölwanne 101 mit einer selbsttragenden Struktur 102 aus Leichtmetallschaum, beispielsweise Aluminiumschaum. Durch die Leichtmetallschaumstruktur 102 wird die Schallemission der Ölwanne 101 wesentlich verringert. Um Öldichtheit zu gewährleisten, ist im Inneren der Ölwanne 101 eine Innenwanne 103 aus Kunststoff angeordnet. Die Innenwanne 103 kann lose in die Struktur 102 eingesetzt sein.The 6 to 10 show an oil pan 101 with a self-supporting structure 102 from light metal foam, for example aluminum foam. Through the light metal foam structure 102 is the sound emission of the oil pan 101 significantly reduced. To ensure oil tightness is inside the oil pan 101 an inner tub 103 made of plastic. The inner tub 103 can loose in the structure 102 be used.

Die Ölwanne 101 weist an ihrem Anschlussbereich an ein nicht weitere dargestelltes Kurbelgehäuse einen Flansch 104 auf. Um eine sichere Befestigung am Kurbelgehäuse zu ermöglichen, sind im Bereich des Flansches 104 eingeschäumte Auflageflächen 105 vorgesehen, wie in 7 dargestellt ist. Zusätzlich zu den Auflageflächen 105 können Armierungen 106 in die Bohrungen 104a für die Befestigungsschrauben 107 eingesetzt sein. Die Armierungen 106 können einstückig oder getrennt mit den Auflageflächen 105 ausgeführt sein, wie in der 9 im Detail gezeigt ist. Im Beispiel weisen die gestanzten Bohrungen 105a der beiden Auflageflächen 105 tiefgezogene Ränder 105b auf. Diese werden durch die hülsenartige Armierung 106 der Bohrung 104a des Flansches 104 miteinander verbunden. Zur Verbindung mit dem Leichtmetallschaum weisen die Armierungen 106 Perforationen 106a auf.The oil pan 101 has at its connection area to a non-illustrated crankcase a flange 104 on. To allow a secure attachment to the crankcase, are in the range of the flange 104 Foamed bearing surfaces 105 provided as in 7 is shown. In addition to the bearing surfaces 105 can reinforcements 106 into the holes 104a for the fixing screws 107 be used. The reinforcements 106 Can be made in one piece or separately with the bearing surfaces 105 be executed as in the 9 shown in detail. In the example, the punched holes 105a the two bearing surfaces 105 deep-drawn edges 105b on. These are made by the sleeve-like reinforcement 106 the bore 104a of the flange 104 connected with each other. For connection with the light metal foam have the reinforcements 106 perforations 106a on.

Der obere Rand 108 der Innenwanne 103 ist bis über die Flanschfläche 104a des Flansches 104 hochgezogen und kann die Funktion einer Dichtung für das Kurbelgehäuse übernehmen. Dadurch können separate Dichtungen entfallen.The upper edge 108 the inner tub 103 is over the flange surface 104a of the flange 104 pulled up and can take over the function of a seal for the crankcase. As a result, separate seals can be omitted.

Alternativ zu den in den 7 und 8 dargestellten, aus Leichtmetallschaum bestehenden Flansch 104 kann der Flansch 104 aus Eisenwerkstoff bestehen und über eine Wurzelstruktur 109 im Leichtmetallkörper 102 eingebettet sein. 9 zeigt einen derartigen Flansch 104 aus metallischem Werkstoff mit einer Wurzelstruktur 109.Alternatively to the in the 7 and 8th shown, consisting of light metal foam flange 104 can the flange 104 made of ferrous material and have a root structure 109 in the light metal body 102 be embedded. 9 shows such a flange 104 made of metallic material with a root structure 109 ,

Alternativ zur Innenwanne 103 kann der Leichtmetallkörper 102 auf der Innenseite eine öldichte Beschichtung aufweisen.Alternative to the inner tub 103 can the light metal body 102 have an oil-tight coating on the inside.

Durch die Ölwanne 101 aus Leichtmetallschaum lässt sich die Schallabstrahlung und das Gewicht wesentlich vermindern. Da die Ölwanne 101 nur aus einer oder zwei Schichten besteht, kann die Anzahl der Fertigungsschritte auf ein Mindestmaß reduziert werden.Through the oil pan 101 made of light metal foam, the sound radiation and the weight can be significantly reduced. Because the oil pan 101 consists of only one or two layers, the number of production steps can be reduced to a minimum.

Claims (6)

Ölwanne (101) für eine Brennkraftmaschine, welche zumindest teilweise aus porösem Material gefertigt ist, dadurch gekennzeichnet, dass die Ölwanne (101) eine selbsttragende Struktur (102) aus Leichtmetallschaum, vorzugsweise aus Aluminium- oder Magnesiumschaum, aufweist.Oil pan ( 101 ) for an internal combustion engine, which is at least partially made of porous material, characterized in that the oil sump ( 101 ) a self-supporting structure ( 102 ) made of light metal foam, preferably of aluminum or magnesium foam having. Ölwanne (101) nach Anspruch 1, dadurch gekennzeichnet, dass die Innenseite (103) der Struktur (102) eine öldichtende Beschichtung aufweist.Oil pan ( 101 ) according to claim 1, characterized in that the inside ( 103 ) of the structure ( 102 ) has an oil-tight coating. Ölwanne (101) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass innerhalb der Struktur (102) eine öldichte Innenwanne (103), vorzugsweise aus Kunststoff, angeordnet ist.Oil pan ( 101 ) according to claim 1 or 2, characterized in that within the structure ( 102 ) an oil-tight inner tub ( 103 ), preferably made of plastic, is arranged. Ölwanne (101) nach Anspruch 3, dadurch gekennzeichnet, dass die Innenwanne (103) die Funktion einer Dichtung gegenüber einem anschließenden Kurbelgehäuse übernimmt.Oil pan ( 101 ) according to claim 3, characterized in that the inner tub ( 103 ) assumes the function of a seal against a subsequent crankcase. Ölwanne (101) nach einem der Ansprüche 1 bis 4, mit einem Anschlussflansch (104) zum Befestigen an einem Kurbelgehäuse, dadurch gekennzeichnet, dass der Anschlussflansch (104) eine eingeschäumte Auflagefläche (105) und/oder Armierungen (106) der Bohrung für die Befestigungsschrauben (107) aufweist.Oil pan ( 101 ) according to one of claims 1 to 4, with a connecting flange ( 104 ) for attachment to a crankcase, characterized in that the connecting flange ( 104 ) a foamed bearing surface ( 105 ) and / or reinforcements ( 106 ) of the hole for the fastening screws ( 107 ) having. Ölwanne (101) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Ölwanne (101) zumindest einen Befestigungsflansch (104), vorzugsweise aus Eisenwerkstoff aufweist, welcher über Wurzelstrukturen (109) im anschließenden Leichtmetallschaumkörper eingebettet ist.Oil pan ( 101 ) according to one of claims 1 to 5, characterized in that the oil sump ( 101 ) at least one mounting flange ( 104 ), preferably made of iron material, which has root structures ( 109 ) is embedded in the subsequent light metal foam body.
DE112005002884.4T 2004-12-16 2005-12-15 Internal combustion engine Expired - Fee Related DE112005002884B4 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AT21062004A AT500853B8 (en) 2004-12-16 2004-12-16 OIL PAN FOR AN INTERNAL COMBUSTION ENGINE
ATA2106/2004 2004-12-16
AT1762005A AT501165B8 (en) 2005-02-03 2005-02-03 INTERNAL COMBUSTION ENGINE WITH SEVERAL CYLINDERS
ATA176/2005 2005-02-03
PCT/AT2005/000503 WO2006063373A2 (en) 2004-12-16 2005-12-15 Internal combustion engine

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GB2485542B (en) * 2010-11-16 2013-11-06 Jaguar Cars Composite Cylinder Block of an I.C. Engine

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