WO2011137972A1 - Reciprocating-piston engine - Google Patents

Reciprocating-piston engine Download PDF

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Publication number
WO2011137972A1
WO2011137972A1 PCT/EP2011/001926 EP2011001926W WO2011137972A1 WO 2011137972 A1 WO2011137972 A1 WO 2011137972A1 EP 2011001926 W EP2011001926 W EP 2011001926W WO 2011137972 A1 WO2011137972 A1 WO 2011137972A1
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WO
WIPO (PCT)
Prior art keywords
bearing
reciprocating
housing part
reciprocating engine
bearing part
Prior art date
Application number
PCT/EP2011/001926
Other languages
German (de)
French (fr)
Inventor
Dieter Nowak
Tilmann RÖMHELD
Michael Wagenplast
Original Assignee
Daimler Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimler Ag filed Critical Daimler Ag
Publication of WO2011137972A1 publication Critical patent/WO2011137972A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/045—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable connecting rod length
    • 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
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/047—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of variable crankshaft position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D15/00—Varying compression ratio
    • F02D15/02—Varying compression ratio by alteration or displacement of piston stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/02—Crankshaft bearings

Definitions

  • the invention relates to a reciprocating engine specified in the preamble of claim 1. Art.
  • Such reciprocating engines are known from the mass production of reciprocating engines. They have a plurality of bearings on which a crankshaft of the internal combustion engine is to be stored in a crankcase.
  • the crankcase must bear and support forces introduced by the crankshaft via the bearing point into the crankcase, which requires a stable design of the crankcase. If further components are to be supported on the crankcase, this requires a further stable and rigid design of the crankcase. This is conventionally associated with the disadvantage that the crankcase and thus the reciprocating engine has an undesirably high weight.
  • Patent claim 1 solved.
  • Advantageous embodiments with expedient and non-trivial developments of the invention are specified in the dependent claims.
  • An inventive reciprocating engine with a housing part, by which at least one cylinder of the reciprocating engine is formed, and with a
  • Bearing arrangement on which a crankshaft of the reciprocating engine is to be stored, is characterized in that the storage device is formed by at least one separately formed from the housing part bearing part, which is connected to the housing part.
  • the crankshaft, and optionally an entire crank mechanism of the reciprocating engine which, for example, the crankshaft, a the Cylinder associated connecting rod, a connected to the connecting rod piston and possibly further parts, is to be stored on the storage device completely, the at least one bearing part from an operation of the reciprocating engine resulting bearing and engine forces absorb and support.
  • housing part which, for example, as a cylinder crankcase of the
  • Reciprocating engine is formed of a particularly lightweight material
  • aluminum-based, magnesium-based, from an aluminum alloy, a magnesium alloy, plastic or the like form, whereby the housing part and thus the entire reciprocating engine have a particularly low weight. This keeps the energy demand for operating the reciprocating engine and for moving a motor vehicle with the reciprocating engine in a small frame, which is associated with low fuel consumption and low C0 2 emissions of the reciprocating engine.
  • the bearing part can accordingly be designed to accommodate the bearing and engine forces, in particular with regard to its material, in order to ensure a secure and stable support of the bearing and engine forces over a long service life
  • the housing part does not have to absorb these bearing and engine forces and can be configured particularly easily and efficiently both with regard to the material and with regard to a structural design with regard to wall thicknesses, cost of materials and / or the like.
  • the bearing part makes it possible to pre-assemble the crankshaft and, in particular, the complete crank drive for supporting the crankshaft or the crank drive on the bearing part, and in terms of time prior to a state of the bearing part connected to the housing part. So is the crankshaft or the entire cranking on the
  • the bearing part can be connected to the crankshaft or the crank mechanism completely mounted on the bearing device as a module with the housing part and, for example, in the as
  • Cylinder crankcase formed housing part are used at least partially. This allows a particularly simple and inexpensive assembly and parallelization of manufacturing steps for mounting the reciprocating engine, which keeps the production costs derselbigen low.
  • the storage device comprises, for example, a bearing cap, which constitutes a second bearing part formed separately from the housing part, and to be connected or connected to the first bearing part for the representation of the bearing device is.
  • a main bearing seat for supporting the crankshaft is formed, which directly serves a bearing surface for receiving a bearing, a rolling bearing, a bearing shell or the crankshaft.
  • Main bearing bracket corresponding bearing cap has such a bearing surface for receiving the bearing, the rolling bearing, the bearing shell or the crankshaft directly, whereby the crankshaft and the entire crank mechanism is to be stored on the first and the second bearing part completely. In this case, therefore, the crankshaft or the entire crank mechanism for storage on the first bearing part and the second bearing part
  • Housing part connects.
  • Storage device is at least partially formed on which a further shaft, in particular an adjusting shaft for adjusting a compression ratio of at least one cylinder of the reciprocating engine, to store.
  • the bearing part thus has a very high functional performance, since both the crankshaft or the entire crank mechanism and the other shaft to the respective
  • Storage facilities are to be stored.
  • an adjustment, a cross lever and / or other components are stored and pre-assembled on the bearing part, whereupon the bearing part with the crankshaft, the crank mechanism and the components of the adjusting device connected as a module with the housing part can be.
  • the bearing part is used at least partially with the pre-assembled and stored components in the designed as a cylinder crankcase housing part.
  • the further storage device also includes a bearing cap as the third bearing part, which is connected to the first bearing part to form the further storage device, in particular screwed.
  • the shaft is completely formed on the first and the third bearing part
  • the reciprocating engine comprises at least two cylinders formed by the housing part, wherein at least one
  • Adjustment device is provided, by means of which the respective
  • Compression ratios of the cylinders are independently adjustable variably. This makes it possible to optimally adapt the compression ratios of the cylinders to a plurality of different operating states of the reciprocating piston engine in order to realize low fuel consumption and low C0 2 emissions of the reciprocating engine.
  • the adjusting device comprises the at the other
  • Storage device to be supported shaft and, for example, a hydraulic cylinder in which a piston is slidably disposed.
  • Fig. 1 is a schematic perspective view of a bearing part for a
  • FIG. 2 shows a further schematic perspective view of the bearing part according to FIG. 1;
  • Fig. 3 is a further schematic perspective view of the bearing part according to the preceding figures. 1 to 3 show a bearing part 10 for a reciprocating engine, which is formed separately from a housing part of the reciprocating engine through which four cylinders of the reciprocating engine are formed. Are connected to the bearing part 10
  • Main bearing cap 2 which are each screwed by means of screws 14 to the bearing part 10.
  • a main bearing lane 16 is formed, to which a crankshaft of the reciprocating engine is to be stored completely.
  • the storage lane 16 has main bearings 18 for the crankshaft, which are received by the main bearings 18 bearings, bearings or the crankshaft directly to the storage of this.
  • the crankshaft and an entire crank mechanism comprising the crankshaft, connecting rods assigned to the respective cylinder, pistons connected to the respective connecting rods and / or further components are to be stored completely at the bearing channel 16, whereby the bearing part 10 and the main bearing caps 12 receive bearing and engine forces and can support.
  • the bearing part 10 is L-shaped, wherein the bearing lane 16 is formed on a leg 20 of the L-shape by the main bearing cap 2 and the bearing part 10.
  • a further leg 22 of the L-shape is formed by the bearing part 10 and further bearing cap 24, a further bearing lane 26 on which a pivot shaft of an adjusting device of the reciprocating engine is to be stored completely.
  • the bearing lane 26 formed by the bearing part 10 and the bearing cap 24 includes bearing points 32 to which the adjusting shaft is to be stored.
  • the storage lane 26 is arranged in the vertical direction of the reciprocating engine according to a direction arrow 17 above the main storage lane 16.
  • Cylinders independently adjustable variably whereby the reciprocating engine can be very well adapted to a variety of different operating points. Since the articulation shaft is to be stored on the storage lane 26 completely, the bearing member 10 and the bearing cap 24 can also be incorporated by the pivot shaft bearing forces. This means that the housing part does not have to absorb the bearing and engine forces. Thus, the housing part made of a particularly lightweight material, such as aluminum base, magnesium base, an aluminum alloy, a magnesium alloy, plastic or the like with very little
  • Wall thicknesses be formed, which is the weight of the housing part and thus the entire reciprocating engine keeps in a very small frame. It is possible to form the housing part as an aluminum die-cast part, whereby the
  • bearing cap 24 are screwed by means of screws 28 to the bearing part 10 to illustrate the bearing lane 26th
  • the bearing part 10 By the bearing part 10, the main bearing cap 12 and the bearing cap 24, it is possible to store the crankshaft, possibly the entire crank mechanism with the cranks, connecting rods, cross lever and / or the like and the articulation shaft and preassembled on the bearing part 10, whereupon the bearing part 10th ,
  • the main bearing cap 12 and the bearing cap 24, the crankshaft, the crank mechanism and the adjusting shaft can be connected as a module with the housing part.
  • the housing part is formed, for example, as a cylinder crankcase, wherein the bearing part 0 is at least partially inserted into the cylinder crankcase.
  • the connection of the bearing part 10 with the housing part takes place by screwing the bearing part 10 with the housing part via designated screw-on 34th
  • the particularly stable formed bearing member 10 further allows a carrier of the reciprocating engine, a gear flange and accessories to attach to the bearing part 10, since the bearing member 10 is stable enough to accommodate and support bearing forces can.
  • the housing part can be particularly easily formed and has the primary task of ensuring an oil seal to prevent leakage of oil.
  • the bearing member 10 allows the tolerances to be reduced by one more, which is conducive to the efficient operation of the reciprocating engine.
  • oil guide channels 30 are formed in the bearing part 10, which are fluidly connected to a main oil circuit of the reciprocating engine, and by means of which oil to the main bearings 18 and the bearings 32 feasible is.
  • Daimler AG For cooling and lubrication of the main bearing 18 of the storage lane 16 and the bearings 32 of the storage lane 26 oil guide channels 30 are formed in the bearing part 10, which are fluidly connected to a main oil circuit of the reciprocating engine, and by means of which oil to the main bearings 18 and the bearings 32 feasible is.

Abstract

The invention relates to a reciprocating-piston engine, having a housing part which serves to form at least one cylinder of the reciprocating-piston engine, and having a bearing device (16, 26) for mounting a crankshaft of the reciprocating-piston engine, wherein the bearing device (16, 26) is formed by at least one bearing part (10, 12, 24) which is formed separately from the housing part and which is connected to the housing part.

Description

Hubkolbenmaschine  reciprocating engine
Die Erfindung betrifft eine Hubkolbenmaschine der im Oberbegriff des Patentanspruchs 1 angegebenen Art. The invention relates to a reciprocating engine specified in the preamble of claim 1. Art.
Derartige Hubkolbenmaschinen sind aus dem Serienbau von Hubkolbenmaschinen bekannt. Sie weisen eine Mehrzahl von Lagerstellen auf, an welchen eine Kurbelwelle der Verbrennungskraftmaschine in einem Kurbelgehäuse zu lagern ist. Das Kurbelgehäuse muss dabei von der Kurbelwelle über die Lagerstelle in das Kurbelgehäuse eingebrachte Kräfte ertragen und abstützen, was eine stabile Ausgestaltung des Kurbelgehäuses erfordert. Sind weitere Komponenten an dem Kurbelgehäuse abzustützen, so erfordert dies eine weitere stabile und steife Ausgestaltung des Kurbelgehäuses. Dies geht herkömmlicher Weise mit dem Nachteil einher, dass das Kurbelgehäuse und damit die Hubkolbenmaschine ein unerwünscht hohes Gewicht aufweist. Such reciprocating engines are known from the mass production of reciprocating engines. They have a plurality of bearings on which a crankshaft of the internal combustion engine is to be stored in a crankcase. The crankcase must bear and support forces introduced by the crankshaft via the bearing point into the crankcase, which requires a stable design of the crankcase. If further components are to be supported on the crankcase, this requires a further stable and rigid design of the crankcase. This is conventionally associated with the disadvantage that the crankcase and thus the reciprocating engine has an undesirably high weight.
Es ist daher Aufgabe der vorliegenden Erfindung, eine Hubkolbenmaschine It is therefore an object of the present invention, a reciprocating engine
bereitzustellen, welche ein geringes Gewicht aufweist. to provide, which has a low weight.
Diese Aufgabe wird durch eine Hubkolbenmaschine mit den Merkmalen des This object is achieved by a reciprocating engine with the features of
Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen mit zweckmäßigen und nichttrivialen Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben. Patent claim 1 solved. Advantageous embodiments with expedient and non-trivial developments of the invention are specified in the dependent claims.
Eine erfindungsgemäße Hubkolbenmaschine mit einem Gehäuseteil, durch welches zumindest ein Zylinder der Hubkolbenmaschine gebildet ist, und mit einer An inventive reciprocating engine with a housing part, by which at least one cylinder of the reciprocating engine is formed, and with a
Lagerungseinrichtung, an welcher ein Kurbelwelle der Hubkolbenmaschine zu lagern ist, zeichnet sich dadurch aus, dass die Lagerungseinrichtung durch zumindest ein separat von dem Gehäuseteil ausgebildetes Lagerteil gebildet ist, welches mit dem Gehäuseteil verbunden ist. Dadurch, dass die Kurbelwelle, sowie gegebenenfalls ein gesamter Kurbeltrieb der Hubkolbenmaschine, welcher zum Beispiel die Kurbelwelle, ein dem Zylinder zugeordnetes Pleuel, einen mit dem Pleuel verbundenen Kolben sowie gegebenenfalls weitere Teile umfasst, an der Lagerungseinrichtung komplett zu lagern ist, kann das zumindest eine Lagerteil aus einem Betrieb der Hubkolbenmaschine resultierende Lager- und Triebswerkkräfte aufnehmen und abstützen. Dies ermöglicht es, dass Gehäuseteil, welches beispielsweise als Zylinderkurbelgehäuse der Bearing arrangement, on which a crankshaft of the reciprocating engine is to be stored, is characterized in that the storage device is formed by at least one separately formed from the housing part bearing part, which is connected to the housing part. Characterized in that the crankshaft, and optionally an entire crank mechanism of the reciprocating engine, which, for example, the crankshaft, a the Cylinder associated connecting rod, a connected to the connecting rod piston and possibly further parts, is to be stored on the storage device completely, the at least one bearing part from an operation of the reciprocating engine resulting bearing and engine forces absorb and support. This makes it possible that housing part, which, for example, as a cylinder crankcase of the
Hubkolbenmaschine ausgebildet ist, aus einem besonders leichten Werkstoff, Reciprocating engine is formed of a particularly lightweight material,
beispielsweise auf Aluminium-Basis, Magnesium-Basis, aus einer Aluminiumlegierung, einer Magnesiumlegierung, aus Kunststoff oder dergleichen auszubilden, wodurch das Gehäuseteil und damit die gesamte Hubkolbenmaschine ein besonders niedriges Gewicht aufweisen. Dies hält den Energiebedarf zum Betrieb der Hubkolbenmaschine und zum Fortbewegen eines Kraftwagens mit der Hubkolbenmaschine in einem geringen Rahmen, was mit einem geringen Kraftstoffverbrauch sowie geringen C02-Emissionen der Hubkolbenmaschine einhergeht. For example, aluminum-based, magnesium-based, from an aluminum alloy, a magnesium alloy, plastic or the like form, whereby the housing part and thus the entire reciprocating engine have a particularly low weight. This keeps the energy demand for operating the reciprocating engine and for moving a motor vehicle with the reciprocating engine in a small frame, which is associated with low fuel consumption and low C0 2 emissions of the reciprocating engine.
Das Lagerteil kann dementsprechend zur Aufnahme der Lager- und Triebwerkskräfte insbesondere bzgl. dessen Werkstoff ausgebildet sein, um eine sichere und stabile Abstützung der Lager- und Triebwerkskräfte über eine hohe Lebensdauer der The bearing part can accordingly be designed to accommodate the bearing and engine forces, in particular with regard to its material, in order to ensure a secure and stable support of the bearing and engine forces over a long service life
Hubkolbenmaschine hinweg zu gewährleisten. Das Gehäuseteil muss diese Lager- und Triebwerkkräfte nicht aufnehmen und kann sowohl bzgl. des Werkstoff als auch bzgl. einer konstruktiven Auslegung hinsichtlich Wandstärken, Materialaufwand und/oder dergleichen besonders leicht und effizient ausgestaltet sein. To ensure reciprocating engine away. The housing part does not have to absorb these bearing and engine forces and can be configured particularly easily and efficiently both with regard to the material and with regard to a structural design with regard to wall thicknesses, cost of materials and / or the like.
Des Weiteren ermöglicht es das Lagerteil, Kurbelwelle und insbesondere den kompletten Kurbeltrieb zur Lagerung der Kurbelwelle bzw. des Kurbeltriebs an dem Lagerteil vorzumontieren, und das zeitlich vor einem mit dem Gehäuseteil verbundenen Zustand des Lagerteils. Ist also die Kurbelwelle bzw. der gesamte Kurbelbetrieb an der Furthermore, the bearing part makes it possible to pre-assemble the crankshaft and, in particular, the complete crank drive for supporting the crankshaft or the crank drive on the bearing part, and in terms of time prior to a state of the bearing part connected to the housing part. So is the crankshaft or the entire cranking on the
Lagerungseinrichtung vormontiert und komplett gelagert, so kann das Lagerteil mit der an der Lagerungseinrichtung komplett gelagerten Kurbelwelle bzw. dem Kurbeltrieb als Modul mit dem Gehäuseteil verbunden und beispielsweise in das als Storage device pre-assembled and stored completely, so the bearing part can be connected to the crankshaft or the crank mechanism completely mounted on the bearing device as a module with the housing part and, for example, in the as
Zylinderkurbelgehäuse ausgebildete Gehäuseteil zumindest bereichsweise eingesetzt werden. Dies ermöglicht eine besonders einfache und unaufwendige Montage sowie eine Parallelisierung von Fertigungsschritten zur Montage der Hubkolbenmaschine, was die Fertigungskosten derselbigen gering hält. Cylinder crankcase formed housing part are used at least partially. This allows a particularly simple and inexpensive assembly and parallelization of manufacturing steps for mounting the reciprocating engine, which keeps the production costs derselbigen low.
Die Lagerungseinrichtung umfasst beispielsweise einen Lagerdeckel, welcher ein zweites, separat von dem Gehäuseteil ausgebildetes Lagerteil darstellt, und mit dem ersten Lagerteil zur Darstellung der Lagerungseinrichtung zu verbinden bzw. verbunden ist. Dabei ist beispielsweise durch das erste Lagerteil ein Hauptlagerstuhl zur Lagerung der Kurbelwelle gebildet, welcher eine Lagerfläche zur Aufnahme eines Lagers, eines Wälzlagers, einer Lagerschale oder der Kurbelwelle direkt dient. Auch der zu dem The storage device comprises, for example, a bearing cap, which constitutes a second bearing part formed separately from the housing part, and to be connected or connected to the first bearing part for the representation of the bearing device is. In this case, for example, by the first bearing part, a main bearing seat for supporting the crankshaft is formed, which directly serves a bearing surface for receiving a bearing, a rolling bearing, a bearing shell or the crankshaft. Also to the
Hauptlagerstuhl korrespondierende Lagerdeckel weist eine solche Lagerfläche zur Aufnahme des Lagers, des Wälzlagers, der Lagerschale oder der Kurbelwelle direkt auf, wodurch die Kurbelwelle bzw. der gesamte Kurbeltrieb an dem ersten und dem zweiten Lagerteil komplett zu lagern ist. Dabei kann also die Kurbelwelle bzw. der gesamte Kurbeltrieb zur Lagerung an dem ersten Lagerteil sowie dem zweiten Lagerteil Main bearing bracket corresponding bearing cap has such a bearing surface for receiving the bearing, the rolling bearing, the bearing shell or the crankshaft directly, whereby the crankshaft and the entire crank mechanism is to be stored on the first and the second bearing part completely. In this case, therefore, the crankshaft or the entire crank mechanism for storage on the first bearing part and the second bearing part
vormontiert werden, woran sich die Verbindung des ersten Lagerteils mit dem be pre-assembled, what is the connection of the first bearing part with the
Gehäuseteil anschließt. Housing part connects.
In einer besonders vorteilhaften Ausführungsform der Erfindung ist durch das Lagerteil zumindest eine weitere, desachsiert von der Lagerungseinrichtung angeordnete In a particularly advantageous embodiment of the invention is at least one further, desachsiert of the storage device arranged by the bearing part
Lagerungseinrichtung zumindest teilweise gebildet, an welcher eine weitere Welle, insbesondere eine Verstellwelle zur Einstellung eines Verdichtungsverhältnisses zumindest des einen Zylinders der Hubkolbenmaschine, zu lagern ist. Das Lagerteil weist somit einen sehr hohen Funktionserfüllungsumfang auf, da sowohl die Kurbelwelle bzw. der gesamte Kurbeltrieb als auch die weitere Welle an den jeweiligen Storage device is at least partially formed on which a further shaft, in particular an adjusting shaft for adjusting a compression ratio of at least one cylinder of the reciprocating engine, to store. The bearing part thus has a very high functional performance, since both the crankshaft or the entire crank mechanism and the other shaft to the respective
Lagerungseinrichtungen zu lagern sind. Somit kann neben der Kurbelwelle und des Kurbeltriebs auch die Verstellwelle, eine Verstelleinheit, ein Querhebel und /oder weitere Komponenten an dem Lagerteil gelagert und vormontiert werden, woraufhin das Lagerteil mit der Kurbelwelle, dem Kurbeltrieb und den Komponenten der Versteileinrichtung als Modul mit dem Gehäuseteil verbunden werden kann. Dabei kann ebenso vorgesehen sein, dass das Lagerteil mit dem vormontierten und gelagerten Komponenten in das als Zylinderkurbelgehäuse ausgebildete Gehäuseteil zumindest bereichsweise eingesetzt wird. Storage facilities are to be stored. Thus, in addition to the crankshaft and the crank mechanism and the adjusting, an adjustment, a cross lever and / or other components are stored and pre-assembled on the bearing part, whereupon the bearing part with the crankshaft, the crank mechanism and the components of the adjusting device connected as a module with the housing part can be. It can also be provided that the bearing part is used at least partially with the pre-assembled and stored components in the designed as a cylinder crankcase housing part.
In einer weiteren Ausführungsform umfasst die weitere Lagerungseinrichtung ebenso einen Lagerdeckel als drittes Lagerteil, welcher mit dem ersten Lagerteil zur Bildung der weiteren Lagerungseinrichtung verbunden, insbesondere verschraubt, ist. Dadurch ist die Welle komplett an der durch das erste und das dritte Lagerteil gebildeten In a further embodiment, the further storage device also includes a bearing cap as the third bearing part, which is connected to the first bearing part to form the further storage device, in particular screwed. As a result, the shaft is completely formed on the first and the third bearing part
Lagerungseinrichtung zu lagern und vorzumontieren. Dies birgt den Vorteil, dass auch die Montage der Welle einfach und kostengünstig erfolgen kann. Außerdem ist diese Store and pre-assemble storage facility. This has the advantage that the assembly of the shaft can be done easily and inexpensively. Besides, this one is
Ausführungsform insofern vorteilbehaftet, als zusätzliche und das Gewicht der Embodiment insofar advantageous, as additional and the weight of
Hubkolbenmaschine unerwünschte erhöhende Vorkehrungen an dem Gehäuseteil zur Lagerung der Welle nicht vonnöten sind, da das erste Lagerteil auch die Lagerkräfte der Welle aufnimmt, welche somit nicht von dem Gehäuseteil aufgenommen werden müssen. Dies hält das Gewicht des Gehäuseteils und damit der gesamten Hubkolbenmaschine gering. Reciprocating unwanted increasing precautions on the housing part for supporting the shaft are not required, since the first bearing part also receives the bearing forces of the shaft, which thus need not be absorbed by the housing part. This keeps the weight of the housing part and thus the entire reciprocating engine low.
In einer vorteilhaften Ausführungsform der Erfindung umfasst die Hubkolbenmaschine zumindest zwei durch das Gehäuseteil gebildete Zylinder, wobei zumindest eine In an advantageous embodiment of the invention, the reciprocating engine comprises at least two cylinders formed by the housing part, wherein at least one
VerStelleinrichtung vorgesehen ist, mittels welcher die jeweiligen Adjustment device is provided, by means of which the respective
Verdichtungsverhältnisse der Zylinder unabhängig voneinander variabel einstellbar sind. Dies ermöglicht es, die Verdichtungsverhältnisse der Zylinder optimal an eine Vielzahl von unterschiedlichen Betriebszuständen der Hubkolbenmaschine anzupassen, um einen geringen Kraftstoffverbrauch sowie geringe C02-Emissionen der Hubkolbenmaschine zu realisieren. Die VerStelleinrichtung umfasst dabei die an der weiteren Compression ratios of the cylinders are independently adjustable variably. This makes it possible to optimally adapt the compression ratios of the cylinders to a plurality of different operating states of the reciprocating piston engine in order to realize low fuel consumption and low C0 2 emissions of the reciprocating engine. The adjusting device comprises the at the other
Lagerungseinrichtung zu lagernden Welle sowie beispielsweise ein Hydraulikzylinder, in welchem ein Kolben verschiebbar angeordnet ist. Storage device to be supported shaft and, for example, a hydraulic cylinder in which a piston is slidably disposed.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels sowie anhand der Zeichnungen. Die vorstehend in der Beschreibung genannten Merkmale und Further advantages, features and details of the invention will become apparent from the following description of a preferred embodiment and from the drawings. The features mentioned above in the description and
Merkmalskombinationen sowie die nachfolgend in der Figurenbeschreibung genannten und/oder in den Figuren alleine gezeigten Merkmale und Merkmalskombinationen sind nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Feature combinations as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures are not only in the respectively indicated combination but also in others
Kombinationen oder in Alleinstellung verwendbar, ohne den Rahmen der Erfindung zu verlassen. Combinations or alone, without departing from the scope of the invention.
Die Zeichnungen zeigen in: The drawings show in:
Fig. 1 eine schematische Perspektivansicht eines Lagerteils für eine Fig. 1 is a schematic perspective view of a bearing part for a
Hubkolbenmaschine, an welchem eine Kurbelwelle der  Reciprocating engine, on which a crankshaft of
Hubkolbenmaschine sowie eine Anlenkwelle einer Versteileinrichtung zu zylinderindividuellen, variablen Einstellung jeweiliger  Reciprocating engine and a steering shaft of an adjusting device to cylinder individual, variable adjustment respectively
Verdichtungsverhältnisse von Zylindern der Hubkolbenmaschine zu lagern sind;  Are to be stored compression ratios of cylinders of the reciprocating engine;
Fig. 2 eine weitere schematische Perspektivansicht des Lagerteils gemäß Fig. 1 ; FIG. 2 shows a further schematic perspective view of the bearing part according to FIG. 1; FIG.
und  and
Fig. 3 eine weitere schematische Perspektivansicht des Lagerteils gemäß den vorhergehenden Figuren. Die Fig. 1 bis 3 zeigen ein Lagerteil 10 für eine Hubkolbenmaschine, welches separat von einem Gehäuseteil der Hubkolbenmaschine ausgebildet ist, durch welches vier Zylinder der Hubkolbenmaschine gebildet sind. Mit dem Lagerteil 10 verbunden sind Fig. 3 is a further schematic perspective view of the bearing part according to the preceding figures. 1 to 3 show a bearing part 10 for a reciprocating engine, which is formed separately from a housing part of the reciprocating engine through which four cylinders of the reciprocating engine are formed. Are connected to the bearing part 10
Hauptlagerdeckel 2, die jeweils mittels Schrauben 14 mit dem Lagerteil 10 verschraubt sind. Durch das Lagerteil 10 sowie die ebenfalls separat von dem Gehäuseteil der Hubkolbenmaschine ausgebildeten Hauptlagerdeckel 12 ist eine Hauptlagergasse 16 gebildet, an welche ein Kurbelwelle der Hubkolbenmaschine komplett zu lagern ist. Die Lagergasse 16 weist Hauptlager 18 für die Kurbelwelle auf, wobei durch die Hauptlager 18 Wälzlager, Lagerschalen oder die Kurbelwelle direkt zur Lagerung dieser aufnehmbar sind. An der Lagergasse 16 ist somit die Kurbelwelle sowie ein gesamter Kurbeltrieb umfassend die Kurbelwelle, den jeweiligen Zylinder zugeordnete Pleuel, mit den jeweiligen Pleuel verbundene Kolben und/oder weitere Komponenten komplett zu lagern, wodurch das Lagerteil 10 sowie die Hauptlagerdeckel 12 Lager- und Triebwerkskräfte aufnehmen und abstützen können. Main bearing cap 2, which are each screwed by means of screws 14 to the bearing part 10. By the bearing part 10 and also formed separately from the housing part of the reciprocating engine main bearing cap 12, a main bearing lane 16 is formed, to which a crankshaft of the reciprocating engine is to be stored completely. The storage lane 16 has main bearings 18 for the crankshaft, which are received by the main bearings 18 bearings, bearings or the crankshaft directly to the storage of this. Thus, the crankshaft and an entire crank mechanism comprising the crankshaft, connecting rods assigned to the respective cylinder, pistons connected to the respective connecting rods and / or further components are to be stored completely at the bearing channel 16, whereby the bearing part 10 and the main bearing caps 12 receive bearing and engine forces and can support.
Wie der Fig. 1 zu entnehmen ist, ist das Lagerteil 10 L-förmig ausgebildet, wobei die Lagergasse 16 an einem Schenkel 20 der L-Form durch die Hauptlagerdeckel 2 sowie das Lagerteil 10 gebildet ist. An einen weiteren Schenkel 22 der L-Form ist durch das Lagerteil 10 sowie weitere Lagerdeckel 24 eine weitere Lagergasse 26 gebildet, an welcher eine Anlenkwelle einer Versteileinrichtung der Hubkolbenmaschine komplett zu lagern ist. Die durch das Lagerteil 10 sowie die Lagerdeckel 24 gebildete Lagergasse 26 umfasst dabei Lagerstellen 32, an welchen die Verstellwelle zu lagern ist. Die Lagergasse 26 ist in Hochrichtung der Hubkolbenmaschine gemäß einem Richtungspfeil 17 oberhalb der Hauptlagergasse 16 angeordnet. 1, the bearing part 10 is L-shaped, wherein the bearing lane 16 is formed on a leg 20 of the L-shape by the main bearing cap 2 and the bearing part 10. At a further leg 22 of the L-shape is formed by the bearing part 10 and further bearing cap 24, a further bearing lane 26 on which a pivot shaft of an adjusting device of the reciprocating engine is to be stored completely. The bearing lane 26 formed by the bearing part 10 and the bearing cap 24 includes bearing points 32 to which the adjusting shaft is to be stored. The storage lane 26 is arranged in the vertical direction of the reciprocating engine according to a direction arrow 17 above the main storage lane 16.
Mittels der Versteileinrichtung und der Anlenkwelle sind dabei jeweilige By means of the adjusting device and the articulation shaft are respective
Verdichtungsverhältnisse der einzelnen der vier durch das Gehäuseteil gebildeten Compression ratios of each of the four formed by the housing part
Zylinder unabhängig voneinander variabel einstellbar, wodurch die Hubkolbenmaschine sehr gut an eine Vielzahl von unterschiedlichen Betriebspunkten angepasst werden kann. Da auch die Anlenkwelle an der Lagergasse 26 komplett zu lagern ist, können das Lagerteil 10 sowie die Lagerdeckel 24 auch von der Anlenkwelle eingebracht Lagerkräfte aufnehmen. Dies bedeutet, dass das Gehäuseteil die Lager- und Triebwerkskräfte nicht aufnehmen muss. Damit kann das Gehäusesteil aus einem besonders leichten Werkstoff, beispielsweise aus Aluminium-Basis, Magnesium-Basis, aus einer Aluminiumlegierung, einer Magnesiumlegierung, aus Kunststoff oder dergleichen mit sehr geringen Cylinders independently adjustable variably, whereby the reciprocating engine can be very well adapted to a variety of different operating points. Since the articulation shaft is to be stored on the storage lane 26 completely, the bearing member 10 and the bearing cap 24 can also be incorporated by the pivot shaft bearing forces. This means that the housing part does not have to absorb the bearing and engine forces. Thus, the housing part made of a particularly lightweight material, such as aluminum base, magnesium base, an aluminum alloy, a magnesium alloy, plastic or the like with very little
Wandstärken ausgebildet sein, was das Gewicht des Gehäuseteils und damit der gesamten Hubkolbenmaschine in einem sehr geringen Rahmen hält. Dabei ist es möglich, das Gehäuseteil als Aluminium-Druckgussteil auszubilden, wodurch das Wall thicknesses be formed, which is the weight of the housing part and thus the entire reciprocating engine keeps in a very small frame. It is possible to form the housing part as an aluminum die-cast part, whereby the
Gehäuseteil einerseits sehr leicht und andererseits sehr kostengünstig herzustellen ist. Auch die Lagerdeckel 24 sind mittels Schrauben 28 mit dem Lagerteil 10 verschraubt zur Darstellung der Lagergasse 26. Housing part on the one hand very easily and on the other hand is very inexpensive to produce. Also, the bearing cap 24 are screwed by means of screws 28 to the bearing part 10 to illustrate the bearing lane 26th
Durch das Lagerteil 10, die Hauptlagerdeckel 12 sowie die Lagerdeckel 24 ist es möglich, die Kurbelwelle, gegebenenfalls den gesamten Kurbeltrieb mit den Kurbeln, Pleuel, Querhebel und/oder dergleichen sowie die Anlenkwelle zu lagern und an dem Lagerteil 10 vorzumontieren, woraufhin das Lagerteil 10, die Hauptlagerdeckel 12 sowie die Lagerdeckel 24, die Kurbelwelle, der Kurbeltrieb sowie die Verstellwelle als Modul mit dem Gehäuseteil verbunden werden können. Das Gehäuseteil ist dabei beispielsweise als Zylinderkurbelgehäuse ausgebildet, wobei das Lagerteil 0 zumindest bereichsweise in das Zylinderkurbelgehäuse eingesetzt wird. Die Verbindung des Lagerteils 10 mit dem Gehäuseteil erfolgt dabei durch Verschrauben des Lagerteils 10 mit dem Gehäuseteil über dafür vorgesehene Anschraubflächen 34. By the bearing part 10, the main bearing cap 12 and the bearing cap 24, it is possible to store the crankshaft, possibly the entire crank mechanism with the cranks, connecting rods, cross lever and / or the like and the articulation shaft and preassembled on the bearing part 10, whereupon the bearing part 10th , The main bearing cap 12 and the bearing cap 24, the crankshaft, the crank mechanism and the adjusting shaft can be connected as a module with the housing part. The housing part is formed, for example, as a cylinder crankcase, wherein the bearing part 0 is at least partially inserted into the cylinder crankcase. The connection of the bearing part 10 with the housing part takes place by screwing the bearing part 10 with the housing part via designated screw-on 34th
Das besonders stabil ausgebildete Lagerteil 10 ermöglicht es weiterhin, einen Träger der Hubkolbenmaschine, einen Getriebeflansch sowie Nebenaggregate an dem Lagerteil 10 zu befestigen, da das Lagerteil 10 stabil genug ist, um Lagerkräfte aufzunehmen und abstützen zu können. Das Gehäuseteil kann dabei besonders leicht ausgebildet werden und hat primär die Aufgabe, eine Öldichtheit zu gewährleisten, um ein Austritt von Öl zu verhindern. The particularly stable formed bearing member 10 further allows a carrier of the reciprocating engine, a gear flange and accessories to attach to the bearing part 10, since the bearing member 10 is stable enough to accommodate and support bearing forces can. The housing part can be particularly easily formed and has the primary task of ensuring an oil seal to prevent leakage of oil.
Durch die zylinderindividuelle Einstellbarkeit der jeweiligen Verdichtungsverhältnisse der einzelnen Zylinder der Hubkolbenmaschine sind Toleranzen der Hubkolbenmaschine ohnehin sehr gering. Darüber hinaus ermöglicht es das Lagerteil 10 die Toleranzen um ein weiteres zu reduzieren, was für den effizienten Betrieb der Hubkolbenmaschine zuträglich ist. Due to the cylinder-individual adjustability of the respective compression ratios of the individual cylinders of the reciprocating engine tolerances of the reciprocating engine are anyway very low. In addition, the bearing member 10 allows the tolerances to be reduced by one more, which is conducive to the efficient operation of the reciprocating engine.
Zur Kühlung und zur Schmierung der Hauptlager 18 der Lagergasse 16 sowie der Lagerstellen 32 der Lagergasse 26 sind in dem Lagerteil 10 ölführungskanäle 30 ausgebildet, welche mit einem Hauptölkreislauf der Hubkolbenmaschine fluidisch verbunden sind, und mittels welchen Öl zu den Hauptlagern 18 und den Lagerstellen 32 führbar ist. Daimler AG For cooling and lubrication of the main bearing 18 of the storage lane 16 and the bearings 32 of the storage lane 26 oil guide channels 30 are formed in the bearing part 10, which are fluidly connected to a main oil circuit of the reciprocating engine, and by means of which oil to the main bearings 18 and the bearings 32 feasible is. Daimler AG
Bezugszeichenliste LIST OF REFERENCE NUMBERS
10 Lagerteil 10 bearing part
12 Hauptlagerdeckel 12 main bearing caps
14 Schraube 14 screw
16 Lagergasse  16 storage lane
17 Richtungspfeil 17 directional arrow
18 Hauptlager 18 main bearings
20 Schenkel  20 thighs
22 Schenkel  22 thighs
24 Lagerdeckel  24 bearing cover
26 Lagergasse  26 Lagergasse
28 Schraube  28 screw
30 Ölführungskanal 30 oil duct
32 Lagerstelle 32 storage location
34 Anschraubfläche  34 bolting surface

Claims

Patentansprüche claims
1. Hubkolbenmaschine mit einem Gehäuseteil, durch welches zumindest ein Zylinder der Hubkolbenmaschine gebildet ist, und mit einer Lagerungseinrichtung (16, 26), an welcher eine Kurbelwelle der Hubkolbenmaschine zu lagern ist, 1. Reciprocating piston engine with a housing part, by which at least one cylinder of the reciprocating engine is formed, and with a bearing device (16, 26) on which a crankshaft of the reciprocating engine is to be stored,
dadurch gekennzeichnet, dass  characterized in that
die Lagerungseinrichtung (16, 26) durch zumindest ein separat von dem  the storage device (16, 26) by at least one separately from the
Gehäuseteil ausgebildetes Lagerteil (10, 12, 24) gebildet ist, welches mit dem Gehäuseteil verbunden ist.  Housing part formed bearing part (10, 12, 24) is formed, which is connected to the housing part.
2. Hubkolbenmaschine nach Anspruch 1 , 2. A reciprocating engine according to claim 1,
dadurch gekennzeichnet, dass  characterized in that
durch das Lagerteil (10) zumindest eine weitere, desachsiert von der ersten  by the bearing part (10) at least one further, desachsiert of the first
Lagerungseinrichtung (16, 26) angeordnete Lagerungseinrichtung (16, 26) zumindest teilweise gebildet ist, an welcher eine weitere Welle, insbesondere eine Verstellwelle zur Einstellung eines Verdichtungsverhältnisses zumindest des einen Zylinders der Hubkolbenmaschine zu lagern ist.  Bearing means (16, 26) arranged bearing means (16, 26) is at least partially formed, on which a further shaft, in particular an adjusting shaft for adjusting a compression ratio of at least one cylinder of the reciprocating engine is to be stored.
3. Hubkolbenmaschine nach Anspruch 2, 3. Reciprocating piston engine according to claim 2,
dadurch gekennzeichnet, dass  characterized in that
die weitere Lagerungseinrichtung (16, 26) in Hochrichtung (17) der  the further storage device (16, 26) in the vertical direction (17) of
Hubkolbenmaschine oberhalb der ersten Lagerungseinrichtung (16, 26) angeordnet ist.  Reciprocating engine above the first storage device (16, 26) is arranged.
4. Hubkolbenmaschine nach einem der Ansprüche 1 oder 2, 4. Reciprocating piston engine according to one of claims 1 or 2,
dadurch gekennzeichnet, dass das Lagerteil (10) mit dem Gehäuseteil reversibel lösbar verbunden, insbesondere verschraubt, ist. characterized in that the bearing part (10) connected to the housing part reversibly detachable, in particular screwed, is.
5. Hubkolbenmaschine nach einem der vorhergehenden Ansprüche, 5. Reciprocating piston engine according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
das Gehäuseteil und das Lagerteil (10) aus voneinander unterschiedlichen Werkstoffen ausgebildet sind.  the housing part and the bearing part (10) are formed from mutually different materials.
6. Hubkolbenmaschine nach einem der vorhergehenden Ansprüchen, 6. Reciprocating piston engine according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
das Lagerteil (10) im Wesentlichen L-förmig ausgebildet ist.  the bearing part (10) is formed substantially L-shaped.
7. Hubkolbenmaschine nach einem der vorhergehenden Ansprüche, 7. Reciprocating piston engine according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Lagerungseinrichtung (16, 26) zumindest einen Lagerdeckel (12 ,24) umfasst, welcher mit dem Lagerteil (10) verbunden, insbesondere verschraubt, ist.  the bearing device (16, 26) comprises at least one bearing cap (12, 24) which is connected, in particular screwed, to the bearing part (10).
8. Hubkolbenmaschine nach einem der vorhergehenden Ansprüche, 8. Reciprocating piston engine according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Hubkolbenmaschine zumindest zwei durch das Gehäuseteil gebildete Zylinder umfasst, wobei zumindest eine Versteileinrichtung vorgesehen ist, mittels welcher die jeweiligen Verdichtungsverhältnisse der Zylinder unabhängig voneinander variabel einstellbar sind.  the reciprocating engine comprises at least two cylinders formed by the housing part, wherein at least one adjusting device is provided, by means of which the respective compression ratios of the cylinders are independently adjustable variably.
PCT/EP2011/001926 2010-05-07 2011-04-15 Reciprocating-piston engine WO2011137972A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010019759.9 2010-05-07
DE201010019759 DE102010019759A1 (en) 2010-05-07 2010-05-07 reciprocating engine

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE575230C (en) * 1930-07-05 1933-04-26 Otto Severin Ruud Internal combustion engine with changeable compression chamber which automatically adapts to the load by shifting the piston stroke
DE2501605A1 (en) * 1974-01-16 1975-07-24 Peugeot CONSTRUCTION OF AN COMBUSTION ENGINE
JPH09144555A (en) * 1995-11-25 1997-06-03 Yamaha Motor Co Ltd Four-cycle engine of small number of cylinders
WO2007092168A2 (en) * 2006-02-02 2007-08-16 Edward Charles Mendler Combustion pressure sensor
JP2008045443A (en) * 2006-08-11 2008-02-28 Toyota Motor Corp Variable compression ratio internal combustion engine
JP2008274962A (en) * 2008-08-11 2008-11-13 Toyota Motor Corp Spark ignition internal combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE575230C (en) * 1930-07-05 1933-04-26 Otto Severin Ruud Internal combustion engine with changeable compression chamber which automatically adapts to the load by shifting the piston stroke
DE2501605A1 (en) * 1974-01-16 1975-07-24 Peugeot CONSTRUCTION OF AN COMBUSTION ENGINE
JPH09144555A (en) * 1995-11-25 1997-06-03 Yamaha Motor Co Ltd Four-cycle engine of small number of cylinders
WO2007092168A2 (en) * 2006-02-02 2007-08-16 Edward Charles Mendler Combustion pressure sensor
JP2008045443A (en) * 2006-08-11 2008-02-28 Toyota Motor Corp Variable compression ratio internal combustion engine
JP2008274962A (en) * 2008-08-11 2008-11-13 Toyota Motor Corp Spark ignition internal combustion engine

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