EP0435847A1 - Reciprocating internal combustion piston engine - Google Patents

Reciprocating internal combustion piston engine Download PDF

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Publication number
EP0435847A1
EP0435847A1 EP90890332A EP90890332A EP0435847A1 EP 0435847 A1 EP0435847 A1 EP 0435847A1 EP 90890332 A EP90890332 A EP 90890332A EP 90890332 A EP90890332 A EP 90890332A EP 0435847 A1 EP0435847 A1 EP 0435847A1
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EP
European Patent Office
Prior art keywords
outer structure
cylinder head
internal combustion
combustion engine
engine
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
EP90890332A
Other languages
German (de)
French (fr)
Other versions
EP0435847B1 (en
Inventor
Franz Dipl.-Ing. Dr. Techn. Brandl
Helmut Dipl.-Ing. Melde-Tuczai
Manfred Ing. Breitenberger
Freddy Dipl.-Ing. Van Nerum
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AVL List GmbH
Original Assignee
AVL List GmbH
AVL Gesellschaft fuer Verbrennungskraftmaschinen und Messtechnik mbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AT0293289A external-priority patent/AT400742B/en
Priority claimed from AT0219490A external-priority patent/AT402536B/en
Application filed by AVL List GmbH, AVL Gesellschaft fuer Verbrennungskraftmaschinen und Messtechnik mbH filed Critical AVL List GmbH
Publication of EP0435847A1 publication Critical patent/EP0435847A1/en
Application granted granted Critical
Publication of EP0435847B1 publication Critical patent/EP0435847B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • 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
    • F02F7/0007—Crankcases of engines with cylinders in line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • 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
    • 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
    • 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 an internal combustion engine with reciprocating pistons, a cylinder block, a cylinder head and an engine, and a separate outer structure for sound reduction, the engine being connected to the outer structure via the cylinder head.
  • the invention has for its object to remedy these disadvantages, the construction effort should be kept as low as possible.
  • this is achieved in that the engine is connected to the outer structure only via the rigid cylinder head, the outer structure being attached to the cylinder head, e.g. is screwed tight, and on its underside by a rigid component, e.g. a lead frame, is closed, so that the outer structure is significantly stiffened by forming a box closed on all sides.
  • a rigid component e.g. a lead frame
  • the cylinder head, the cylinder block and the outer structure are additionally acoustically decoupled by a cylinder head gasket, which additionally significantly reduces the structure-borne noise excitation of the outer structure.
  • the outer structure can have a circumferential flange which carries the oil pan. This further increases the rigidity of the outer structure.
  • the size of the oil pan which preferably consists of layer material (sandwich sheet), can advantageously be adapted to the excitation center in order to minimize its noise emission.
  • the side parts of the outer structure can be connected to one another by means of at least one transverse screw connection passing through the crank chamber, as a result of which the level of rigidity of the outer structure can be advantageously influenced.
  • attachments to the engine to be firmly connected to the cylinder block, preferably with a cylindrical shape, add-on parts, engine mountings and gears, and for these intermediate pieces to penetrate the outer structure and to be isolated from structure-borne noise by elastic seals.
  • the "box”, which is closed on all sides, does not get anything except its own weight further force loads. The effect achieved is less sound radiation with less construction work.
  • the power-carrying engine 1 together with its outer structure 4 is screwed onto the cylinder head 3 via the cylinder head gasket 2.
  • the outer structure 4 is screwed onto the cylinder head 3 via the cylinder head gasket 2.
  • the rigid cylinder head 3 is additionally acoustically decoupled from the outer structure 4 via the cylinder head gasket 2.
  • the outer structure 4 is closed by a lead frame 5 in the form of a rigid shell with an opening 6 for dismantling the connecting rod cover 7 at the bottom.
  • the additional possible cross screw connections 20 mutually support the walls at suitable points.
  • the oil pan 8 is sealed as high as possible on a flange 9 on the outer structure 4.
  • the transmission-side flywheel housing 10 is fastened to the outer structure 4 and the lead frame 5 in order to increase the rigidity of the motor-transmission unit. This also reduces the structure-borne noise level introduced by the engine into the transmission.
  • the engine 1 consists of the moving parts: piston 11, connecting rod 12, crankshaft 13 and the cylinder block 14, the bearing bracket 15 and the bearing bracket 16.
  • the transmission is attached to the engine 1 via cylindrical intermediate pieces 21.
  • the passage through the outer structure 4 is sealed by elastic seals 22. These can be vulcanized with the intermediate pieces 21 or designed in the manner of shaft seals.
  • the brackets 23 for the engine suspension can be screwed to the inner structure via such intermediate pieces 21.
  • the console 23 or similar components can also be used for receiving units 24. The result is a "box" which is closed on all sides and which, apart from its own weight, does not experience any additional force. The effect achieved is less sound radiation.
  • a turbocharger is provided, of which the supercharger 17 attached to the cylinder head 3 is shown.
  • the structure-borne noise decoupling between the charger 17 and the cylinder head 3 can be accomplished by an element which is flexible in the axial direction.

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

Abstract

In the case of an internal combustion engine with reciprocating pistons, a cylinder block, a cylinder head and a transmission and an external structure for reducing noise, the transmission (1) is connected to the external structure (4) solely by way of the rigid cylinder head (3), the external structure (4) being fixed to the cylinder head (3) by way of a cylinder head gasket (2) and closed off on its underside by a rigid component, for example a ladder frame (5), so that the external structure (4) is distinctly reinforced in that a box is formed which is enclosed on all sides. In addition the side parts of the external structure (4) can be connected together by transverse screw connections (20). Furthermore, attachments (24), engine suspension (23) and gears on the transmission (1) can be fixed by way of intermediate pieces (21), preferably cylindrical in shape, firmly connected to the cylinder block (14), and these intermediate pieces (21) pass through the external structure (4). <IMAGE>

Description

Die Erfindung bezieht sich auf eine Brennkraftmaschine mit hin- und hergehenden Kolben, einem Zylinderblock, einem Zylinderkopf und einem Triebwerk sowie einer separaten Außenstruktur zur Schallreduktion, wobei das Triebwerk mit der Außenstruktur über den Zylinderkopf verbunden ist.The invention relates to an internal combustion engine with reciprocating pistons, a cylinder block, a cylinder head and an engine, and a separate outer structure for sound reduction, the engine being connected to the outer structure via the cylinder head.

Um die Schallabstrahlung zu verringern, ist es bekannt, die Brennkraftmaschinen mit Teil-, Voll-, Naß- und Trockenkapseln zu versehen. Nachteile der bisherigen Maßnahmen sind einerseits die nur lokale Wirkung von Teilkapseln an den Einzelbauteilen bzw. der große Aufwand bei den an sich sehr wirkungsvollen vollen Naß- bzw. Trockenkapseln.In order to reduce the sound radiation, it is known to provide the internal combustion engines with partial, full, wet and dry capsules. Disadvantages of the previous measures are, on the one hand, the only local effect of partial capsules on the individual components or the great effort involved in the full wet or dry capsules, which are very effective per se.

Bei den Naßkapseln tritt insbesondere der Nachteil auf, daß die in der Schallabstrahlung geminderte Außenkapsel zum erregenden Triebwerk im Inneren gegen Öl abgedichtet werden muß. Diese Dichtung stellt einen aufwendigen und risikobehafeten Bauteil dar. Zusätzlich treten durch die Bauart bedingt, Resonanzen zwischen Triebwerk und Außenkapsel auf, die zu Vibrationsproblemen führen, da die Entkoppelung über elastische Elemente erfolgt und somit ein Feder-Massesystem gebildet wird.In the case of the wet capsules, there is the particular disadvantage that the outer capsule, which is reduced in sound radiation, has to be sealed against oil on the inside to the exciting engine. This seal represents a complex and risky component. In addition, due to the design, resonances occur between the engine and the outer capsule, which lead to vibration problems, since the decoupling takes place via elastic elements and thus a spring-mass system is formed.

Es sind Brennkraftmaschinen der genannten Art bekannt, bei welchen die Außenschale elastisch über Elastomere mit der Motorstruktur verbunden ist. Es handelt sich um eine trockene Kapsel, die den Motor vollständig umschließt. Diese trockene Kapsel ist an allen möglichen Motorflächen elastisch aufgehängt. Es ergibt sich dabei der Nachteil, daß Elastomere verschleißen können, daß infolge Wärmestauproblemen eine Kapselbelüftung erforderlich ist und Aggregate schlecht, nämlich nur über "Wartungsdeckel" oder durch Entfernen der Kapsel zugänglich sind.Internal combustion engines of the type mentioned are known in which the outer shell is elastically connected to the engine structure via elastomers. It is a dry capsule that completely encloses the motor. This dry capsule is elastically suspended on all possible engine surfaces. This has the disadvantage that elastomers can wear out, that capsule ventilation is necessary as a result of heat accumulation problems, and units are poorly accessible, namely only via "maintenance covers" or by removing the capsule.

Der Erfindung liegt die Aufgabe zugrunde, diese Nachteile zu beheben, wobei der Bauaufwand möglichst klein gehalten werden soll.The invention has for its object to remedy these disadvantages, the construction effort should be kept as low as possible.

Erfindungsgemäß wird dies dadurch erreicht, daß das Triebwerk mit der Außenstruktur nur über den steifen Zylinderkopf verbunden ist, wobei die Außenstruktur am Zylinderkopf befestigt, z.B. festgeschraubt ist, und an ihrer Unterseite durch einen steifen Bauteil, z.B. einen Leiterrahmen, abgeschlossen ist, sodaß die Außenstruktur in sich deutlich versteift wird, indem eine allseits geschlossene Schachtel gebildet ist.According to the invention, this is achieved in that the engine is connected to the outer structure only via the rigid cylinder head, the outer structure being attached to the cylinder head, e.g. is screwed tight, and on its underside by a rigid component, e.g. a lead frame, is closed, so that the outer structure is significantly stiffened by forming a box closed on all sides.

Dadurch entsteht eine hohe Steifigkeit der Außenstruktur sowie eine hohe Steifigkeit der Motor-Getriebe-Einheit, da das Getriebe über seine gesamte Bauhöhe an der Außenstruktur angeflanscht werden kann. Eine Schallreduktion entsteht dadurch, daß die Außenschale mit dem Triebwerk nur über den steifen Zylinderkopfboden verbunden ist und dieser dementsprechend niedrige Körperschallpegel aufweist und daher die Außenstruktur nur in geringem Maße durch Körperschall angeregt wird.This results in a high rigidity of the outer structure and a high rigidity of the motor-gear unit, since the gear can be flanged to the outer structure over its entire height. A sound reduction arises from the fact that the outer shell is connected to the engine only via the rigid cylinder head floor and this accordingly has a low structure-borne noise level, and therefore the outer structure is only stimulated to a small extent by structure-borne noise.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß der Zylinderkopf, der Zylinderblock und die Außenstruktur durch eine Zylinderkopfdichtung zusätzlich akustisch hochfrequent entkoppelt sind, wodurch zusätzlich die Körperschallanregung der Außenstruktur deutlich vermindert wird.In a further embodiment of the invention it is provided that the cylinder head, the cylinder block and the outer structure are additionally acoustically decoupled by a cylinder head gasket, which additionally significantly reduces the structure-borne noise excitation of the outer structure.

In weiterer Ausgestaltung der Erfindung kann die Außenstruktur einen umlaufenden Flansch aufweisen, der die Ölwanne trägt. Dadurch wird die Steifigkeit der Außenstruktur zusätzlich noch erhöht. Vorteilhaft kann die vorzugsweise aus Schichtmaterial (Sandwichblech) bestehende Ölwanne an das Anregungszentrum durch ihre Größe angepaßt sein, um deren Geräuschabstrahlung zu minimieren.In a further embodiment of the invention, the outer structure can have a circumferential flange which carries the oil pan. This further increases the rigidity of the outer structure. The size of the oil pan, which preferably consists of layer material (sandwich sheet), can advantageously be adapted to the excitation center in order to minimize its noise emission.

Zusätzlich können die Seitenteile der Außenstruktur mittels mindestens einer den Kurbelraum durchsetzenden Querverschraubung miteinander verbunden sein, wodurch die Höhe der Steifigkeit der Außenstruktur vorteilhaft beeinflußt werden kann.In addition, the side parts of the outer structure can be connected to one another by means of at least one transverse screw connection passing through the crank chamber, as a result of which the level of rigidity of the outer structure can be advantageously influenced.

Im Rahmen der Erfindung kann auch vorgesehen sein, daß über mit dem Zylinderblock fest verbundene Zwischenstücke, vorzugsweise mit zylindrischer Form, Anbauteile, Motoraufhängung und Getriebe am Triebwerk befestigt sind und diese Zwischenstücke die Außenstruktur durchdringen und von dieser über elastische Dichtungen körperschallentkoppelt sind. Die allseits geschlossene "Schachtel" wird so außer vom Eigengewicht durch keine weiteren Krafteinleitungen belastet. Der erzielte Effekt besteht in einer geringeren Schallabstrahlung bei kleinem Bauaufwand.Within the scope of the invention, provision can also be made for attachments to the engine to be firmly connected to the cylinder block, preferably with a cylindrical shape, add-on parts, engine mountings and gears, and for these intermediate pieces to penetrate the outer structure and to be isolated from structure-borne noise by elastic seals. The "box", which is closed on all sides, does not get anything except its own weight further force loads. The effect achieved is less sound radiation with less construction work.

Die Erfindung wird nachfolgend anhand zweier Ausführungsbeispiele näher erläutert. Es zeigen:

  • Fig. 1 eine erfindungsgemäße Brennkraftmaschine im Schnitt nach der Linie I-I in Fig. 2 und
  • Fig. 2 einen axialen Längsschnitt dieser Maschine,
  • Fig. 3 ein zweites Ausführungsbeispiel einer erfindungsgemäßen Brennkraftmaschine im Schnitt nach der Linie III-III in Fig. 4 und
  • Fig. 4 einen axialen Längsschnitt dieser Maschine.
The invention is explained in more detail below using two exemplary embodiments. Show it:
  • Fig. 1 shows an internal combustion engine according to the invention in section along the line II in Fig. 2 and
  • 2 shows an axial longitudinal section of this machine,
  • Fig. 3 shows a second embodiment of an internal combustion engine according to the invention in section along the line III-III in Fig. 4 and
  • Fig. 4 is an axial longitudinal section of this machine.

Gleiche Teile sind mit denselben Bezugszeichen versehen.The same parts are provided with the same reference numerals.

Beim Ausführungsbeispiel nach Fig. 1 und 2 ist das kraftführende Triebwerk 1 samt seiner Außenstruktur 4 über die Zylinderkopfdichtung 2 am Zylinderkopf 3 festgeschraubt. Zwischen der Außenstruktur 4 und dem Triebwerk 1 besteht keine körperschallführende Verbindung, außer über den steifen Zylinderkopf 3, der zusätzlich über die Zylinderkopfdichtung 2 von der Außenstruktur 4 akustisch entkoppelt ist.In the exemplary embodiment according to FIGS. 1 and 2, the power-carrying engine 1 together with its outer structure 4 is screwed onto the cylinder head 3 via the cylinder head gasket 2. There is no structure-borne sound-conducting connection between the outer structure 4 and the engine 1, except via the rigid cylinder head 3, which is additionally acoustically decoupled from the outer structure 4 via the cylinder head gasket 2.

Die Außenstruktur 4 wird von einem Leiterrahmen 5 in Form einer steifen Schale mit einer Öffnung 6 zur Demontage der Pleuelstangendeckel 7 unten verschlossen. Die zusätzlich möglichen Querverschraubungen 20 stützen die Wände an geeigneten Stellen gegenseitig ab. Die Ölwanne 8 ist möglichst hochgezogen an einem Flansch 9 an der Außenstruktur 4 abgedichtet.The outer structure 4 is closed by a lead frame 5 in the form of a rigid shell with an opening 6 for dismantling the connecting rod cover 7 at the bottom. The additional possible cross screw connections 20 mutually support the walls at suitable points. The oil pan 8 is sealed as high as possible on a flange 9 on the outer structure 4.

Das getriebeseitige Schwungradgehäuse 10 ist zur Erhöhung der Steifigkeit der Motor-Getriebe-Einheit an der Außenstruktur 4 und dem Leiterrahmen 5 befestigt. Damit wird auch der vom Motor in das Getriebe eingeleitete Körperschallpegel reduziert.The transmission-side flywheel housing 10 is fastened to the outer structure 4 and the lead frame 5 in order to increase the rigidity of the motor-transmission unit. This also reduces the structure-borne noise level introduced by the engine into the transmission.

Das Triebwerk 1 besteht aus den bewegten Teilen: Kolben 11, Pleuelstange 12, Kurbelwelle 13 und dem Zylinderblock 14, dem Lagerstuhl 15 und dem Lagerbügel 16.The engine 1 consists of the moving parts: piston 11, connecting rod 12, crankshaft 13 and the cylinder block 14, the bearing bracket 15 and the bearing bracket 16.

Bei der Ausführung nach den Fig. 3 und 4 ist das Getriebe über zylindrische Zwischenstücke 21 am Triebwerk 1 befestigt. Der Durchtritt durch die Außenstruktur 4 wird durch elastische Dichtungen 22 abgedichtet. Diese können mit den Zwischenstücken 21 vulkanisiert oder auch in der Art von Wellendichtringen konzipiert sein. Ebenso können die Konsolen 23 für die Motoraufhängung über solche Zwischenstücke 21 an der Innenstruktur verschraubt sein. Die Konsole 23 oder ähnliche Bauteile können auch für die Aufnahme von Aggregaten 24 verwendet werden. Es entsteht somit eine allseits geschlossene "Schachtel", die außer dem Eigengewicht keine weiteren Krafteinleitungen erleidet. Der erzielte Effekt besteht in einer geringeren Schallabstrahlung.In the embodiment according to FIGS. 3 and 4, the transmission is attached to the engine 1 via cylindrical intermediate pieces 21. The passage through the outer structure 4 is sealed by elastic seals 22. These can be vulcanized with the intermediate pieces 21 or designed in the manner of shaft seals. Likewise, the brackets 23 for the engine suspension can be screwed to the inner structure via such intermediate pieces 21. The console 23 or similar components can also be used for receiving units 24. The result is a "box" which is closed on all sides and which, apart from its own weight, does not experience any additional force. The effect achieved is less sound radiation.

Im vorliegenden Falle ist ein Turbolader vorgesehen, von dem der am Zylinderkopf 3 befestigte Lader 17 dargestellt ist. Die Körperschallentkopplung zwischen Lader 17 und dem Zylinderkopf 3 kann von einem in Achsrichtung nachgiebigem Element bewerkstelligt werden.In the present case, a turbocharger is provided, of which the supercharger 17 attached to the cylinder head 3 is shown. The structure-borne noise decoupling between the charger 17 and the cylinder head 3 can be accomplished by an element which is flexible in the axial direction.

Claims (6)

Brennkraftmaschine mit hin- und hergehenden Kolben, einem Zylinderblock, einem Zylinderkopf und einem Triebwerk sowie einer separaten Außenstruktur zur Schallreduktion, wobei das Triebwerk mit der Außenstruktur über den Zylinderkopf verbunden ist, dadurch gekennzeichnet , daß das Triebwerk (1) mit der Außensruktur (4) nur über den steifen Zylinderkopf (3) verbunden ist, wobei die Außenstruktur (4) am Zylinderkopf (3) befestigt, z.B. festgeschraubt ist, und an ihrer Unterseite durch einen steifen Bauteil, z.B. einen Leiterrahmen (5), abgeschlossen ist, sodaß die Außenstruktur (4) in sich deutlich versteift wird, indem eine allseits geschlossene Schachtel gebildet ist.Internal combustion engine with reciprocating pistons, a cylinder block, a cylinder head and an engine as well as a separate outer structure for noise reduction, the engine being connected to the outer structure via the cylinder head, characterized in that the engine (1) with the outer structure (4) is only connected via the rigid cylinder head (3), the outer structure (4) being fastened to the cylinder head (3), for example being screwed on, and being closed on its underside by a rigid component, for example a lead frame (5), so that the outer structure (4) is clearly stiffened in itself by forming a box which is closed on all sides. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß der Zylinderkopf (3), der Zylinderblock (14) und die Außenstruktur (4) durch eine Zylinderkopfdichtung (2) zusätzlich akustisch hochfrequent entkoppelt sind.Internal combustion engine according to claim 1, characterized in that the cylinder head (3), the cylinder block (14) and the outer structure (4) are additionally acoustically decoupled by a cylinder head gasket (2). Brennkraftmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Außenstruktur (4) einen umlaufenden Flansch (9) aufweist, der die Ölwanne (8) trägt.Internal combustion engine according to claim 1 or 2, characterized in that the outer structure (4) has a circumferential flange (9) which carries the oil pan (8). Brennkraftmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die vorzugsweise aus Schichtmaterial bestehende Ölwanne (8) an das Anregungsspektrum durch ihre Größe angepaßt ist, um deren Geräuschabstrahlung zu minimieren.Internal combustion engine according to claim 1 or 2, characterized in that the oil pan (8), which preferably consists of layer material, is adapted to the excitation spectrum by its size in order to minimize its noise radiation. Brennkraftmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Seitenteile der Außenstruktur (4) mittels mindestens einer den Kurbelraum durchsetzenden Querverschraubung (20) miteinander verbunden sind.Internal combustion engine according to one of claims 1 to 4, characterized in that the side parts of the outer structure (4) are connected to one another by means of at least one transverse screw connection (20) penetrating the crank chamber. Brennkraftmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß über mit dem Zylinderblock (14) fest verbundene Zwischenstücke (21), vorzugsweise mit zylindrischer Form, Anbauteile (24), Motoraufhängung (23) und Getriebe am Triebwerk (1) befestigt sind und diese Zwischenstücke (21) die Außenstruktur (4) durchdringen und von dieser über elastische Dichtungen (22) körperschallentkoppelt sind.Internal combustion engine according to one of Claims 1 to 5, characterized in that attachments (24), engine mountings (23) and gears are attached to the engine (1) by means of intermediate pieces (21), preferably of cylindrical shape, which are fixedly connected to the cylinder block (14) and this Intermediate pieces (21) penetrate the outer structure (4) and are decoupled from structure-borne noise via elastic seals (22).
EP90890332A 1989-12-22 1990-12-17 Reciprocating internal combustion piston engine Expired - Lifetime EP0435847B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT0293289A AT400742B (en) 1989-12-22 1989-12-22 Internal combustion engine with reciprocating pistons
AT2932/89 1990-10-30
AT0219490A AT402536B (en) 1990-10-30 1990-10-30 Internal combustion engine having reciprocating pistons
AT2194/90 1990-10-30

Publications (2)

Publication Number Publication Date
EP0435847A1 true EP0435847A1 (en) 1991-07-03
EP0435847B1 EP0435847B1 (en) 1992-10-14

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EP90890332A Expired - Lifetime EP0435847B1 (en) 1989-12-22 1990-12-17 Reciprocating internal combustion piston engine

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EP (1) EP0435847B1 (en)
JP (1) JP2930220B2 (en)
KR (1) KR940006048B1 (en)
DE (1) DE59000360D1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0663522A1 (en) * 1994-01-14 1995-07-19 Steyr Nutzfahrzeuge Ag Crankcase for an internal combustion engine
AT399920B (en) * 1992-06-09 1995-08-25 Avl Verbrennungskraft Messtech LIFTING PISTON
WO2006082004A1 (en) * 2005-02-02 2006-08-10 Fev Motorentechnik Gmbh Crankcase of a reciprocating internal combustion engine
AT511648A1 (en) * 2011-06-22 2013-01-15 Avl List Gmbh Internal combustion engine
CN105299021A (en) * 2014-07-09 2016-02-03 西班牙博格华纳排放系统公司 Fixing anchor

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DE2839885A1 (en) * 1977-09-13 1979-04-26 Nissan Motor QUIET COMBUSTION ENGINE
DE3532599A1 (en) * 1984-09-21 1986-04-03 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH, Prof. Dr.Dr.h.c. Hans List, Graz Internal combustion engine
US4771747A (en) * 1987-12-17 1988-09-20 Caterpillar Inc. Internal combustion engine noise reduction plate

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AT399920B (en) * 1992-06-09 1995-08-25 Avl Verbrennungskraft Messtech LIFTING PISTON
EP0663522A1 (en) * 1994-01-14 1995-07-19 Steyr Nutzfahrzeuge Ag Crankcase for an internal combustion engine
WO2006082004A1 (en) * 2005-02-02 2006-08-10 Fev Motorentechnik Gmbh Crankcase of a reciprocating internal combustion engine
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Also Published As

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DE59000360D1 (en) 1992-11-19
KR910012514A (en) 1991-08-08
JP2930220B2 (en) 1999-08-03
KR940006048B1 (en) 1994-07-02
EP0435847B1 (en) 1992-10-14
JPH05332197A (en) 1993-12-14

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