EP0921297B1 - Internal combustion multi-cylinder piston engine - Google Patents

Internal combustion multi-cylinder piston engine Download PDF

Info

Publication number
EP0921297B1
EP0921297B1 EP98121886A EP98121886A EP0921297B1 EP 0921297 B1 EP0921297 B1 EP 0921297B1 EP 98121886 A EP98121886 A EP 98121886A EP 98121886 A EP98121886 A EP 98121886A EP 0921297 B1 EP0921297 B1 EP 0921297B1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
piston
engine according
type internal
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.)
Revoked
Application number
EP98121886A
Other languages
German (de)
French (fr)
Other versions
EP0921297A2 (en
EP0921297A3 (en
Inventor
Reinhard Könneker
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.)
Daimler AG
Original Assignee
DaimlerChrysler 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7850864&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0921297(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0921297A2 publication Critical patent/EP0921297A2/en
Publication of EP0921297A3 publication Critical patent/EP0921297A3/en
Application granted granted Critical
Publication of EP0921297B1 publication Critical patent/EP0921297B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00Casings, e.g. crankcases or frames
    • F02F7/0002Cylinder arrangements
    • F02F7/0007Crankcases of engines with cylinders in line
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/02Pressure lubrication using lubricating pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/12Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00Crankcase ventilating or breathing
    • F01M13/02Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/12Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • F01M2001/123Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10 using two or more pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00Other engines
    • F02B75/16Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18Multi-cylinder engines
    • F02B2075/1804Number of cylinders
    • F02B2075/1812Number of cylinders three

Definitions

  • the invention relates to a reciprocating internal combustion engine, in particular a multi-cylinder piston internal combustion engine according to the preamble of claim 1.
  • EP 0 038 560 A is a piston internal combustion engine of known type, in which the cylinder block with the overlapping cylinder head is integrally formed and opposite to the cylinder head in a crankcase upper part expires. This takes the upper half bearings Crankshaft bearing on whose lower bearing halves storage chairs associated with a crankcase lower part, the is braced against the crankcase upper part.
  • the crankcase and the part lying below the cylinder head of the cylinder block are longitudinal and over a front side surrounded by a coat-like paneling.
  • crankshaft lying storage chairs connected laterally outside on support beams, which are formed by cast-in steel tubes, so that a ladder-like structure results, with the laterally outside lying stringers as spars and the in between extending storage chairs as sprouts.
  • the attachment of the Crankcase lower part opposite the upper part via the camp chairs enforcing screws, each in the area arranged between the bearing surfaces and the support beams are.
  • crankcase Furthermore, from DE 28 39 885 C2 a piston internal combustion engine known, the cylinder head, the cylinder head bearing cylinder block, with the crankcase shell cast in one piece, a crankcase base and having an oil pan.
  • the crankcase lower part is equipped with bearing blocks for the crankshaft bearings, the from corresponding, the camp chairs cross bearing brackets the crankcase upper part are covered, with the Crankcase lower part is to be screwed.
  • Crankcase top half and crankcase are with a common Connection flange for a directly connected gearbox provided to a particularly stiff and vibration insensitive Total construction of relatively large mass to come and by the vibrations in the low frequency range caused noise level to be kept as low as possible.
  • This Structural design is not related to the arrangement the units of the internal combustion engine, for the arrangement possibilities due to the blocking of engine and Gearboxes are still further restricted than usual.
  • the invention is based on the object for a reciprocating internal combustion engine of the type mentioned a special rigid and favorable in terms of noise performance housing design with the possibility of a particularly space-saving To combine construction.
  • crankcase bottom can in the inventive solution be virtually doubled by a case back, where the housing bottom shell-like to the outer sides of the tubular Stringer connects while the sink floor with the Support beam connected to the mutually facing inner sides is.
  • the two spaced floors are in Framework of the inventive solution preferably in the field of Storage chairs supported against each other, preferably over reaching down to the housing base parts of the storage chairs, so that only relatively small self-supporting wall sections that do not resonate.
  • the crankcase also offers all the prerequisites Splash losses, d. H.
  • the support beam In the context of the solution according to the invention is on the support beam but not only achieves a supporting function, in addition allows a double walledness of the crankcase lower part, but it becomes the double wall in the area of the stringers also used to accommodate aggregates, in particular the arrangement of the oil pump or oil pumps and / or an oil cooler and / or a combined oil cooler and air-oil separator.
  • the stringers, the oil pump or the oil pumps also assigns the oil filter, this in the extension direction the support beam can be arranged, or but also, which is a preferred solution, radially to Supporting beam standing screwed into this or attached to this can be.
  • These catch slots open
  • the catch slots almost under attack, a catch channel or a gutter provided in the function of a collecting channel, via which the oil is fed to the suction side of a pump can be.
  • a suction oil pump which is preferred an end face of the crankcase lower part adjacent is located, and a pressure oil pump provided in a row lying in the corresponding support beam as a subframe are arranged, the collection channel opens on the Suction side of the suction oil pump, through which the oil from the collecting duct is sucked off.
  • On the collecting channel can additionally also return oil holes, which come from the cylinder head go out and in the area of the camp chairs through recesses run, through which the tie rods run.
  • the pressure side of the suction pump via a preferably associated with a front bearing block Channel with the second support beam and arranged in this Oil cooler and / or combined with an oil cooler To connect oil-air separator.
  • the Oil suction pump receiving support beams is, and is from the oil pressure pump on short ways supplied to the same support beam associated oil filter, from the integrated in the crankcase lower part, the oil supply to the camps arranged in the camps and about the crankcase upper part leads to the cylinder head.
  • the distribution the oil to the storage chairs takes place via a along the bottom of the crankcase extending channel, the additionally stiffen the floor between the storage chairs.
  • the oil suction pump and the oil pressure pump it proves to be Frame of the invention as appropriate, this as a unit in the preferred a cylindrical inner surface having axially projecting support beam, wherein by appropriate, appropriate assignment to the connections Suction and pressure sides of the respective oil inlets and outlets getting produced.
  • the oil-air seperator proves to be a cartridge-like Design as appropriate, in which the oil-air seperator in With regard to its additional function as an oil cooler virtually as a double-tube cylinder is formed, on the outside of the oil and through the between inner and outer coat the cooling liquid flows, the separation of the separated Air preferably over the outer and inner sheath passing slit-like recesses takes place. Because the oil in the solution according to the invention preferably approximately tangentially is supplied against the outer jacket and the outer sheath preferred with a particular coiled guide is provided, the oil is due to the guide radially to hurled outside and passes through provided in the stringers Recesses in the oil sump over.
  • the invention thus combines in a particularly advantageous manner Way a particularly rigid housing design of a reciprocating internal combustion engine with a particularly space-saving design.
  • FIG. 1 is a highly schematic Schematic representation of a crankcase lower part 1 of a respect Crankcase shell and cylinder head, not shown Reciprocating internal combustion engine shown, the three-cylinder is executed and in which the lower part 1 storage 2 that does not cross the direction of extension of the here shown crankshaft, shots 3 for the bearings have the crankshaft and a connection between the Make lateral boundaries of the crankcase lower part.
  • lateral boundaries are tubular Support beam 4, 5, based on the representations of FIG. 4th to 10 in detail regarding their structure and their function will be explained in more detail.
  • the supporting beams 4 in the embodiment of the invention not only as a component serve the crankcase lower part 1 to the stiffening, but can also serve as a receptacle for aggregates, wherein these aggregates, as for illustrative purposes only shown, both frontally as well as from the side in the support beams 4, 5 can be inserted or inserted.
  • the stringers 4, 5 of the Front side to be inserted units is an oil pump.
  • outer wall part 7 of the crankcase lower part can be assigned so that the oil pump 6 with her associated drive pinion or sprocket 8 and the associated Drive means, such as a chain drive in a shaft of the crankcase, with respect to the Crankcase lower part 1 laterally over the projecting Wall part 7 is limited, and the one not shown Cover is complete.
  • the support beam 5 is the support beam 5 except for the connection level of the wall part 7 for not shown preferred lid, so here for example an aggregate is to be introduced, which is sealed over the lid and a frontal, the lid penetrating Connection can be supplied.
  • Fig. 1 for the unit 9 shown.
  • Fig. 1st Use of the support beam 4 with frontal insertion at one end and radial Use of an aggregate, here an oil filter 10 near the other front end of the support beam 4 is in Fig. 1st also illustrated, where, as an overview using the Fig. 2 explains, such a basic arrangement to very advantageous and simple supply routes in the oil supply of Internal combustion engine leads. This especially if the Crankcase lower part 1, which can not be seen in FIG.
  • crankcase bottom 11 in the connection of the storage chairs 2 and in the connection of the lower limits the support beam 4 and 5 has a housing bottom 12, as he can be seen in the region of the protruding wall part 7.
  • crankcase lower part. 1 not only provides a further increase in strength for the crankcase lower part, but also proves to be Noise aspects are very advantageous, the inventive Design with little overhead for the Crankcase lower part 1 for the internal combustion engine a Dry sump lubrication allows, as seen from the point of view an improved oil cooling for a machine high performance is appropriate, especially in the inventive Solution integrated the conduction paths in the crankcase lower part 1 can be, so that in this respect additional expenses omitted and also a particularly space-saving design feasible is.
  • Fig. 2 shows, as already mentioned, a schematic representation of such an oil circuit, being in this oil circuit also associated with the crankcase upper part or the cylinder head Wiring paths are illustrated.
  • FIG. 1 described basic structure of a Reciprocating internal combustion engine with associated crankcase lower part 1 corresponding to the oil circuit diagram of FIG. 2 designed, starting from the above-mentioned Dry sump lubrication the oil pump 20 as a combined oil suction pump 21 and oil pressure pump 22 is formed. About the oil suction pump 21 is thereby returning from the lubrication points Oil from a corresponding collection channel, illustrated here by a gutter 23, added to the suction side and via a channel 24 an oil-air separator 25, if necessary also includes an oil cooler function, supplied, wherein the oil-air separator 25 based on a representation 1, another support beam, namely the support beam 5 would be assigned as the oil pump 20, in the support beam. 4 is inserted.
  • the oil flows through a channel 26th the suction side of the oil pressure pump 22, wherein the channel 26 also a memory function, realized for example by a Reservoir or lying outside the crankcase Oil sump, includes.
  • the oil pressure pump 22 promotes the Oil filter 27, and starting from the oil filter 27 is that of the Oil pressure pump 22 pumped oil to the individual lubrication points distributed. Illustrated in this regard are lubrication points the crankshaft bearing, which has a crankcase in the lower part lying channel 29 are supplied and the symbolic are each shown at 30.
  • crankcase upper part are from the connection channel 32 feed lines 35th branched off to oil spray 36, over the oil on the undersides not shown here and in the symbolized cylinders 37 running piston is injected.
  • connection channel 32 branches to supply lines 38, 39, to the individual lubrication points lead the cylinder head.
  • the returning from these lubrication points Oil returns to the gutter 23, starting from the a new pass begins.
  • FIGS. 5 to 10 are partially abstracted Sections according to the corresponding section lines V-V to X-X in Fig. 3.
  • crankcase 40 of FIG. 3 In the plan view of the crankcase 40 of FIG. 3 are the camp chairs with 41 designates, and over the across the Longitudinal axis 42 of the crankcase lower part 40 extending Storage Chairs 41 connected lateral support beams with 43 and 44.
  • the lateral support beams 43 and 44 are again formed like the sections of FIG. 5 to 10 and the frontal view of FIG. 4 show. From these Illustrations can also be seen that the crankcase lower part 40 doppelbödig is designed and an inner Crankcase bottom 45 and an outer housing bottom 46th having.
  • crankcase bottom 45 forms a circular, concentric to the longitudinal axis 42 and to the Support beam 43, 44 tangentially at their sides facing each other approaching shell to which the housing bottom 46 radially is spaced apart and at basically concentric arrangement forms a corresponding outer shell, to the Support beam 43, 44 connects on the outside.
  • Crankcase bottom 45 and housing bottom 46 are, in particular Figs. 5 and 10, connected to one another in the area of the storage chairs 41, the storage chairs 41 with the crankcase bottom 45th and the housing bottom 46 are cast in one piece.
  • the storage chairs 41 have through holes 47 for here tie rods, not shown, on the cylinder head, crankcase upper part and crankcase base against each other to be braced.
  • the through holes 47 are from the housing bottom 46 outgoing, shaft-shaped recesses 48 assigned, so that the holes not shown here, the through holes 47 passing through tie rods in the shaft-like recesses 48 lying nuts practically against the storage chairs 41, from the bottom of the crankcase lower part 40 ago, are screwed.
  • tie rods it proves to be in a manner not shown here as appropriate, they in the cylinder head, preferably by screwing anchored in corresponding receiving holes, so that the not shown crankcase upper part between the cylinder head and crankcase lower part 40 is clamped and the Parts of the crankcase on the tie rods only on Pressure are claimed.
  • the oil pump 20 of FIG. 11 with the ⁇ lsaugpumpe 21 and the Oil pressure pump 22 includes for the oil suction pump 21 and the oil pressure pump 22 each have a cylindrical outer shell 50, 51, the fitting and over in corresponding grooves 52 inserted sealing rings sealed against each other and against the support beam 43 are arranged in this.
  • Oil suction pump 21 and oil pressure pump 22 are each formed as gear pumps, wherein the driven and coaxially arranged gears with 53 and 54 and rotatably on a common shaft 55th are attached.
  • the mating wheels, namely the gears 56 and 57, are also arranged coaxially and on a common Axis 58 stored.
  • the shaft 55 is rotatable with a Drive gear or sprocket 59 connected, as shown Fig. 1 explains, in the conventional unit drive is integrated.
  • Oil suction pump 21 and oil pressure pump 22 suck each via radial Window 60, 61 on, with the corresponding suction windows axially separated from each other, so at a distance from each other a same circumferential angle range extending arranged are and in relation to the mounting position of the oil pump 20 in Tragbalken 43 occupy a position in which they each to a on the inner circumference of the supporting beam 43 supply window are arranged in overlap.
  • the supply window, that corresponds to the suction window 60 of the oil suction pump 21, is shown in section in FIG. 6 and 62 designated, this supply window 62 via a Suction channel 63 is fed, which, as shown in FIG. 5, of the acting as a collecting channel gutter 23 as shown in FIG. 3 goes out.
  • This collection channel is indicated in Fig. 5 to 10 with 64 and extends in a round tube corresponding profile between the crankcase 67 facing side of the support beam 43 and the adjacent underside of the crankcase bottom 45. Between the storage chairs 41 is the connection of the Crankshaft bottom 45 to the side facing him the support beam 43 broken, such that catch slots 65 as Openings for the returning oil are formed over the the oil enters the collection channel 64, in the area of this Catch slots 65 between the crankcase bottom 45 and housing bottom 46 lying sump 66 from the crankcase space 67th separates.
  • the oil suction pump 21 via a in Fig. 11 is not illustrated radial window with a window 68 (Fig. 5) in Supporting beam 43 in coverage, which opens on a channel 69, along the front side of the in Fig. 4 in a front view shown bearing chair 41 extends and a feed window emanating in the support beam 44 inside in the Axial Scheme is provided, the front of the front wall Bearing 41 according to FIG. 4 is located, so that the channel 69 a immediate and integrated into the crankcase bottom Connection between the pressure side of the suction pump 21 and the Tragbalken 44 manufactures, in which combined with an oil cooler Oil-air Seperator shown in FIG. 12 to 14 inserted is.
  • the separator according to FIGS. 12 to 14 has a double-jacket construction on with an outer jacket 70 and an inner jacket 71, wherein the outer and inner shells concentric with each other lie and together include an annulus 72.
  • the inner jacket 71 in turn encloses a space 73.
  • outer jacket 70 and inner jacket 71 are in the region of the end 74 of the total designated 49, combined with an oil cooler Connected oil-air separator, such that an axial Inflow to the annulus 72 of the diameter tapered end of the separator 49 is provided via the terminal 76, the in a frontal cover of the supporting beam 44 sealing to attach.
  • outer jacket 70 and inner jacket 71 are each axially expanded and each form a covenant, whereby in that the inner jacket 71 is longer than the outer jacket 70, between the coils 77 and 78, an annular space is created over the the annular space 72 is open radially outward and the 79th is designated.
  • the bundles 77 and 78 seal in the cartridge-like designed and cylindrical in the interior Support beam 44 Seperator 49 used the annular space 79 opposite the inner surface of the support beam 44 from.
  • outer sheath 70 and inner sheath 71 Over part of their length are outer sheath 70 and inner sheath 71, as shown in FIG. 13, with radial openings in Shape of diametrically opposed slots 80 provided that the connection to the inner jacket 71 enclosed Make room 73 which goes beyond the collar 78 the opposite side of the inflow end 76 open is.
  • the sump 66 has, as the sectional views of FIG. 5 10 show, in the region of the end wall according to FIG. 4 remote end portion of the crankcase lower part its greatest depth, so that the over the openings 82 collects the sump supplied oil in this area.
  • the Seperator 49 is also functionally as Cooler formed. While the separated air the room 73 flows, via the longitudinal slots 80, takes place on the Annulus 72 an inflow of water via the port 76, the, as already mentioned, frontally on the front side Front wall according to FIG. 4 projecting end of the supporting beam 44, this arrangement being preferred, but not shown here also makes possible the water pump on the pressure side directly or via short lines to connect to the terminal 76.
  • connection 76 flows through as an axial inflow water supplied the annular space 72 while cooling the length of the outer jacket 70th flowing oil and exits from the axial annular space 72 the radial annular space 79 in a region of the support beam 44th in which its inner surface has an outflow window 83, via which the cooling water enters a channel 84, the axially in the opposite direction to the flow direction of the oil within the Seperators runs and based on a three-cylinder Internal combustion engine in the longitudinal central region, ie in the region of the third cylinder to an outflow opening 85th ends in the upper end plane of the crankcase lower part 40, so that the water in a corresponding Connection channel of the crankcase upper part, not shown here fed to the cylinders or the cylinder head can be.
  • the separated air enters, as stated, in the space 73 of the Seperators 49 and leaves the separator 49 at the Incoming end opposite to the water, taking it in the closed end of the interior of the supporting beam 44 leaves. This is, as shown in FIG. 10, in his Scope provided with a window 86, which on an exhaust duct empties.
  • oblong-shaped Recesses 87 provided between the central Support for the crankshaft bearing and lateral limit through the respective support beam 43 and 44 in the webs of Storage chairs 41 are provided, wherein the slot-shaped Recesses 87 in addition to their function as an exhaust duct and the Implementation of the tie rods, not shown serve.
  • the Window 86 is the through the slot-shaped recess 87 formed locallytkanal the bearing block 41 in conjunction, the rear, ie output side end wall of the Crankcase lower part 40 listened.
  • Fig. 10 further shows that through the slot-shaped Recesses 87 formed exhaust ducts on the support beam 44 side facing also as ventilation channels for serve the sump 66 and thus except for the space between Crankcase bottom 45 and housing bottom 46 pass freely.
  • the support beam 43 adjacent exhaust ducts end the collection channel 64 leaking and thus allow venting of the crankcase area including the area of the collection channel.
  • suction windows 60 of the suction pump 21 and 61 of the Pressure pump 22 corresponding suction openings in the inner wall of the support beam 43 axially in alignment with each other, but are different from each other separated and from each other in the opposite direction Channels fed, with corresponding seals on the circumference of the oil pump 20, for in Fig. 11 only corresponding Engraving grooves 52 provided on the outer circumference of the oil pump 20 are, with simple means a perfect separation is guaranteed.
  • the pressure pump 22 ends with Distance to the receptacle 89 for the oil filter, as radial Insertion opening (Fig. 9) protrudes into the support beam 43 and in the a conventional oil filter or an oil filter cartridge can be screwed.
  • the pressure side of the oil pressure pump 22 runs as shown in FIG. 6 7, to one within the trolley beam 43 provided axial channel 90, which is on the receiving space 89th for the oil filter and opens with an axial connection 91 (FIG. 11) corresponds to the pressure pump 22, so that at the support beam 43 inserted pressure pump a connection the same is made to the oil filter.
  • the reciprocating piston engine according to the invention is particularly suitable also for mounting positions with inclined to the vertical cylinder axis.
  • Starting point for the embodiment is a Installation position, in which the support member receiving the oil pump 43rd is lower than a horizontal reference plane Support beam 44, as so the catch slots 65 almost at its lowest point the crankcase 67 are located.

Landscapes

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

Description

Die Erfindung betrifft eine Kolbenbrennkraftmaschine, insbesondere eine mehrzylindrige Kolbenbrennkraftmaschine, gemäß dem Oberbegriff des Anspruches 1.The invention relates to a reciprocating internal combustion engine, in particular a multi-cylinder piston internal combustion engine according to the preamble of claim 1.

Aus der EP 0 038 560 A ist eine Kolbenbrennkraftmaschine der vorgenannten Art bekannt, bei der der Zylinderblock mit dem überdeckenden Zylinderkopf einstückig ausgebildet ist und gegenüberliegend zum Zylinderkopf in einem Kurbelgehäuseoberteil ausläuft. Dieses nimmt die oberen Lagerhälften einer Kurbelwellenlagerung auf, deren untere Lagerhälften Lagerstühlen eines Kurbelgehäuseunterteils zugeordnet sind, das gegen das Kurbelgehäuseoberteil verspannbar ist. Das Kurbelgehäuse und der unterhalb des Zylinderkopfes liegende Teil des Zylinderblockes sind längsseitig und über eine Stirnseite von einer mantelartigen Verkleidung umschlossen.From EP 0 038 560 A is a piston internal combustion engine of known type, in which the cylinder block with the overlapping cylinder head is integrally formed and opposite to the cylinder head in a crankcase upper part expires. This takes the upper half bearings Crankshaft bearing on whose lower bearing halves storage chairs associated with a crankcase lower part, the is braced against the crankcase upper part. The crankcase and the part lying below the cylinder head of the cylinder block are longitudinal and over a front side surrounded by a coat-like paneling.

Um für das in Leichtmetallguss ausgeführte Kubelgehäuseunterteil gewichtsparend eine hohe Steifigkeit zu erreichen, sind dessen beabstandet parallel zueinander längs der Kurbelwelle liegende Lagerstühle seitlich außen über Tragbalken verbunden, die durch eingegossene Stahlrohre gebildet sind, so dass sich eine leiterartige Struktur ergibt, mit den seitlich außen liegenden Tragbalken als Holmen und den sich dazwischen erstreckenden Lagerstühlen als Sprossen. Die Befestigung des Kurbelgehäuseunterteiles gegenüber dem Oberteil erfolgt über die Lagerstühle durchsetzende Schrauben, die jeweils im Bereich zwischen den Lagerflächen und den Tragbalken angeordnet sind.To use for the cast aluminum body made of cast aluminum weight saving to achieve high rigidity, are the spaced apart parallel to each other along the crankshaft lying storage chairs connected laterally outside on support beams, which are formed by cast-in steel tubes, so that a ladder-like structure results, with the laterally outside lying stringers as spars and the in between extending storage chairs as sprouts. The attachment of the Crankcase lower part opposite the upper part via the camp chairs enforcing screws, each in the area arranged between the bearing surfaces and the support beams are.

Ferner ist aus der DE 28 39 885 C2 eine Kolbenbrennkraftmaschine bekannt, die einen Zylinderkopf, einen den Zylinderkopf tragenden Zylinderblock, der mit dem Kurbelgehäuseoberteil in einem Stück gegossen ist, einen Kurbelgehäuseunterteil und eine Ölwanne aufweist. Das Kurbelgehäuseunterteil ist mit Lagerstühlen für die Kurbelwellenlager versehen, die von entsprechenden, die Lagerstühle übergreifenden Lagerbügeln des Kurbelgehäuseoberteiles überdeckt sind, das mit dem Kurbelgehäuseunterteil zu verschrauben ist. Kurbelgehäuseoberteil und Kurbelgehäuseunterteil sind mit einem gemeinsamen Anschlussflansch für ein unmittelbar anzuschließendes Getriebe versehen, um zu einem besonders steifen und schwingungsunempfindlichen Gesamtaufbau relativ großer Masse zu kommen und um den durch Vibrationen im niedrigen Frequenzbereich verursachten Geräuschpegel möglichst gering zu halten. Diese bauliche Gestaltung steht nicht in Zusammenhang mit der Anordnung der Aggregate der Brennkraftmaschine, für die die Anordnungsmöglichkeiten aufgrund der Verblockung von Motor und Getriebe aber noch weiter als üblich eingeschränkt sind.Furthermore, from DE 28 39 885 C2 a piston internal combustion engine known, the cylinder head, the cylinder head bearing cylinder block, with the crankcase shell cast in one piece, a crankcase base and having an oil pan. The crankcase lower part is equipped with bearing blocks for the crankshaft bearings, the from corresponding, the camp chairs cross bearing brackets the crankcase upper part are covered, with the Crankcase lower part is to be screwed. Crankcase top half and crankcase are with a common Connection flange for a directly connected gearbox provided to a particularly stiff and vibration insensitive Total construction of relatively large mass to come and by the vibrations in the low frequency range caused noise level to be kept as low as possible. This Structural design is not related to the arrangement the units of the internal combustion engine, for the arrangement possibilities due to the blocking of engine and Gearboxes are still further restricted than usual.

Bei solchen, in ähnlicher Form auch in der Praxis eingesetzten Brennkraftmaschinen wird für den Einsatz in Serienfahrzeugen eine nahezu absolute Zuverlässigkeit über die Regellebensdauer eines Fahrzeuges vorausgesetzt, und es sind darüber hinaus eine Vielzahl sonstiger Anforderungen schon in der Konzeption zu berücksichtigen. So soll insbesondere auch der Laderbetrieb mit sehr hohen Literleistungen möglich sein, und trotz hoher Literleistungen, die entsprechende thermische und mechanische Belastungen mit sich bringen, darf die Maschine nicht zur störenden Geräuschquelle werden und muss in sich entsprechend steif sein, bei möglichst geringem Bauvolumen, wobei Letzteres insbesondere bei kleineren Fahrzeugen von ganz besonderer Bedeutung ist und besondere Probleme auch bezüglich der Anbringung und Unterbringung der Aggregate aufwirft. All dies bedingt ein Konzept, bei dem sich die im Hinblick auf die Gesamtheit der Probleme, von denen hier nur einige angesprochen sind, zu findenden Lösungen in synergetischer Weise ergänzen, wenn ein befriedigendes Resultat erreicht werden soll.In such, in a similar form also used in practice Internal combustion engine is for use in production vehicles a nearly absolute reliability over the control life assuming a vehicle, and it is about it In addition, a variety of other requirements already in the To consider conception. So should in particular also the Charger operation with very high liter capacities be possible, and despite high liters, the corresponding thermal and may cause mechanical stress, the machine may Do not become a disturbing source of noise and must be in yourself be correspondingly stiff, with the least possible construction volume, the latter especially for smaller vehicles of is very special meaning and special problems also regarding mounting and housing of the aggregates. All this requires a concept in which the in terms of on the totality of problems, of which only a few here are addressed, to find solutions in synergetic Add a way, if reaches a satisfactory result shall be.

Der Erfindung liegt die Aufgabe zugrunde, für eine Kolbenbrennkraftmaschine der eingangs genannten Art eine besonders steife und hinsichtlich des Geräuschverhaltens günstige Gehäuseausführung mit der Möglichkeit einer besonders raumsparenden Bauweise zu kombinieren.The invention is based on the object for a reciprocating internal combustion engine of the type mentioned a special rigid and favorable in terms of noise performance housing design with the possibility of a particularly space-saving To combine construction.

Erreicht wird dies durch eine Gestaltung gemäß dem Anspruch 1, die einen Grundaufbau ermöglicht, der sich durch besondere Steifigkeit des Maschinengehäuses auszeichnet, dadurch auch besonders hohe Literleistungen ermöglicht, der in seinem Geräuschverhalten sowohl durch die Steifigkeit als auch durch die teilweise erreichte Doppelwandigkeit befriedigt und der insbesondere auch Voraussetzungen dafür bringt, Aggregate besonders raumsparend zu integrieren. Die dem Unterteil des Kurbelgehäuses zugeordneten rohrförmigen Tragbalken sind selbst Bestandteil der Doppelwandigkeit des Unterteiles des Kurbelgehäuses und sie ermöglichen insbesondere eine sehr steife Abstützung der Lagerstühle, wobei der Aufbau noch weiter dadurch versteift werden kann, dass die rohrförmigen Tragbalken mit den Lagerstühlen über einen Kurbelwannenboden zusätzlich verbunden sind.This is achieved by a design according to the claim 1, which allows a basic structure, which is characterized by special Stiffness of the machine housing is characterized, thereby also particularly high liter rates, the in its noise behavior both through stiffness and through the partially achieved Doppelwandigkeit satisfied and the in particular also provides conditions for aggregates especially to save space. The lower part of the Crankcase associated tubular support beams are itself part of the double - walledness of the lower part of the Crankcase and they allow in particular a very rigid support of the storage chairs, the structure even further This can be stiffened that the tubular Stringer with the storage chairs over a crankcase bottom additionally connected.

Dieser Kurbelwannenboden kann bei der erfindungsgemäßen Lösung durch einen Gehäuseboden quasi gedoppelt werden, wobei der Gehäuseboden schalenartig an die Außenseiten der rohrförmigen Tragbalken anschließt, während der Wannenboden mit den Tragbalken an deren einander zugewandten Innenseiten verbunden ist. Die beiden zueinander beabstandeten Böden sind im Rahmen der erfindungsgemäßen Lösung bevorzugt im Bereich der Lagerstühle gegeneinander abgestützt, und zwar bevorzugt über bis zum Gehäuseboden reichende Teile der Lagerstühle, so dass sich nur verhältnismäßig kleine freitragende Wandabschnitte ergeben, die nicht zur Resonanz neigen. Ein solcher Aufbau des Kurbelgehäuseunterteils bietet zudem auch alle Voraussetzungen, Planschverluste, d. h. Verluste durch Eintauchen von Teilen der Kurbelwelle und der Pleuel in den Ölsumpf zu vermeiden, da der Ölsumpf in den Bereich zwischen Kurbelwannenboden und Gehäuseboden verlegt werden kann, so dass bei entsprechender Ölabführung aus der Kurbelwanne diese praktisch ölfrei ist, in Analogie zu an sich bekannten Trockensumpfschmierungen.This crankcase bottom can in the inventive solution be virtually doubled by a case back, where the housing bottom shell-like to the outer sides of the tubular Stringer connects while the sink floor with the Support beam connected to the mutually facing inner sides is. The two spaced floors are in Framework of the inventive solution preferably in the field of Storage chairs supported against each other, preferably over reaching down to the housing base parts of the storage chairs, so that only relatively small self-supporting wall sections that do not resonate. Such a construction the crankcase also offers all the prerequisites Splash losses, d. H. Losses due to immersion of Divide the crankshaft and the connecting rod into the oil sump to avoid since the oil sump in the area between the crankcase bottom and caseback can be laid, so that with appropriate Oil drain from the crankcase this handy oil-free, in analogy to known dry sump lubrication.

Die Verbindung der beiden Böden, d. h. des Wannenbodens und des Gehäusebodens über Teile der Lagerstühle gibt im Rahmen der Erfindung die zusätzliche Möglichkeit, die zur Verspannung von Zylinderkopf und Kurbelgehäuseoberteil gegen das Kurbelgehäuseunterteil verwendeten Zuganker über das Kurbelgehäuseunterteil nach unten hinaus zu führen und die Verspannung der Zuganker von der Unterseite der Brennkraftmaschine her vorzunehmen. Bei einer derartigen Lösung lassen sich die Zuganker im Zylinderkopf verankern, beispielsweise verschrauben und es wird das Kurbelgehäuseoberteil, das bevorzugt mit dem Zylindergehäuse zusammengefasst ist, zwischen Zylinderkopf und Kurbelgehäuseunterteil eingespannt, wobei das Kurbelgehäuseoberteil ebenso wie das Unterteil lediglich auf Druck beansprucht ist, so dass sich wechselnde Zug-Druckbelastungen vermeiden lassen.The connection of the two floors, d. H. of the tub floor and the case bottom over parts of the storage chairs gives in the frame the invention, the additional possibility that for clamping of cylinder head and crankcase upper part against the The lower part of the crankcase used tie rods via the crankcase lower part to lead down and the tension the tie rod from the bottom of the engine make her. In such a solution, the Anchor the tie rods in the cylinder head, for example screw them together and it is the crankcase upper part, which is preferred with the cylinder housing is summarized, between the cylinder head and crankcase lower part clamped, wherein the crankcase upper part as well as the lower part only on Pressure is stressed, so that changing train-pressure loads avoid it.

Im Rahmen der erfindungsgemäßen Lösung wird über die Tragbalken aber nicht nur eine Tragfunktion erreicht, die zusätzlich eine Doppelwandigkeit des Kurbelgehäuseunterteils ermöglicht, sondern es wird die Doppelwandigkeit im Bereich der Tragbalken auch zur Aufnahme von Aggregaten genutzt, so insbesondere der Anordnung der Ölpumpe oder Ölpumpen und/oder eines Ölkühlers und/oder eines kombinierten Ölkühlers und Luft-Öl-Separators. Selbstverständlich lassen sich auch andere Aggregate in den Tragbalken anordnen oder zu diesen integriert befestigen, wobei im Rahmen der Erfindung eine bevorzugte Lösung ist, dem Tragbalken, der die Ölpumpe oder die Ölpumpen aufnimmt, auch den Ölfilter zuzuordnen, wobei dieser in Erstreckungsrichtung des Tragbalkens angeordnet sein kann, oder aber auch, was eine bevorzugte Lösung darstellt, radial zum Tragbalken stehend in diesen eingeschraubt oder an diesem befestigt sein kann.In the context of the solution according to the invention is on the support beam but not only achieves a supporting function, in addition allows a double walledness of the crankcase lower part, but it becomes the double wall in the area of the stringers also used to accommodate aggregates, in particular the arrangement of the oil pump or oil pumps and / or an oil cooler and / or a combined oil cooler and air-oil separator. Of course, other units can be arrange in the stringers or attach to these integrated, being within the scope of the invention, a preferred solution is, the stringers, the oil pump or the oil pumps also assigns the oil filter, this in the extension direction the support beam can be arranged, or but also, which is a preferred solution, radially to Supporting beam standing screwed into this or attached to this can be.

Im Hinblick auf eine möglichst geringe Ölkonzentration in der Kurbelwanne erweist es sich als zweckmäßig, den Wannenboden im Anschlussbereich an einen der Tragbalken zwischen den Lagerstühlen parallel zum Tragbalken aufzuschlitzen, so dass sich im tangentialen Übergangsbereich vom Tragbalken in den Wannenboden Fangschlitze für das Öl ergeben, durch die das Öl aus der Kurbelgehäusewanne austritt. Diese Fangschlitze münden bei der erfindungsgemäßen Lösung allerdings nicht frei auf den Zwischenraum zwischen Wannenboden und Gehäuseboden, sondern es ist vielmehr zwischen dem Tragbalken und dem Wannenboden, die Fangschlitze quasi untergreifend, ein Fangkanal oder eine Fangrinne in der Funktion eines Sammelkanales vorgesehen, über den das Öl der Saugseite einer Pumpe zugeführt werden kann.With regard to the lowest possible oil concentration in the Crankcase proves to be useful, the tub bottom in the connection area to one of the support beams between the storage chairs Slit parallel to the support beam so that in the tangential transition area from the support beam in the Trough bottom slits for the oil revealed by the oil emerges from the crankcase pan. These catch slots open However, not free in the inventive solution on the space between the bottom of the tank and the bottom of the case, but rather it is between the stringers and the tub floor, the catch slots almost under attack, a catch channel or a gutter provided in the function of a collecting channel, via which the oil is fed to the suction side of a pump can be.

Sind dabei die Fangschlitze und der Sammelkanal benachbart zu dem Tragbalken vorgesehen, der als Ölpumpenaufnahme dient, so ergeben sich sehr kurze Wege und insbesondere entfallen besondere, vor allem freiliegende Leitungen. Are the catch slots and the collection channel adjacent to provided the support beam, which serves as an oil pump intake, so very short distances result and in particular special, especially exposed lines.

Wird dabei im Rahmen der Erfindung eine Saugölpumpe, die bevorzugt einer Stirnseite des Kurbelgehäuseunterteiles benachbart liegt, und eine Druckölpumpe vorgesehen, die hintereinander liegend in dem entsprechenden Tragbalken als Aggregateträger angeordnet sind, so mündet der Sammelkanal auf die Saugseite der Saugölpumpe, über die das Öl aus dem Sammelkanal abgesogen wird. Auf den Sammelkanal können dabei zusätzlich auch Ölrücklaufbohrungen ausmünden, die vom Zylinderkopf ausgehen und die im Bereich der Lagerstühle durch Aussparungen verlaufen, durch die auch die Zuganker verlaufen.If this is within the scope of the invention, a suction oil pump, which is preferred an end face of the crankcase lower part adjacent is located, and a pressure oil pump provided in a row lying in the corresponding support beam as a subframe are arranged, the collection channel opens on the Suction side of the suction oil pump, through which the oil from the collecting duct is sucked off. On the collecting channel can additionally also return oil holes, which come from the cylinder head go out and in the area of the camp chairs through recesses run, through which the tie rods run.

Wird in dem zweiten Tragbalken als Aggregat ein Ölkühler, oder ein kombinierter Öl-Kühl-Luft-Seperator angeordnet, so erweist es sich als zweckmäßig, die Druckseite der Saugpumpe über einen bevorzugt einem stirnseitigen Lagerstuhl zugeordneten Kanal mit dem zweiten Tragbalken und dem in diesen angeordneten Ölkühler und/oder dem mit einem Ölkühler kombinierten Öl-Luft-Seperator zu verbinden. Nach Durchlaufen des Ölkühlers bzw. des kombinierten Ölkühlers und Öl-Luft-Seperators gelangt das Öl in den geschlossenen, zwischen Kurbelwannenboden und Gehäuseboden liegenden Ölsumpf und von dort zur Druckseite der Öldruckpumpe, die ihrerseits ebenfalls im ersten, die Ölsaugpumpe aufnehmenden Tragbalken angeordnet ist, und wird von der Öldruckpumpe auf kurzem Wege dem dem gleichen Tragbalken zugeordneten Ölfilter zugeführt, von dem aus im Kurbelgehäuseunterteil integriert die Ölzuführung zu den in den Lagerstühlen angeordneten Lagern und über das Kurbelgehäuseoberteil zum Zylinderkopf führt. Die Verteilung des Öles zu den Lagerstühlen erfolgt dabei über einen längs des Bodens des Kurbelgehäuses verlaufenden Kanal, der den Boden zwischen den Lagerstühlen zusätzlich aussteift.Is in the second support beam as an aggregate an oil cooler, or a combined oil-cooling-air separator arranged so it proves to be useful, the pressure side of the suction pump via a preferably associated with a front bearing block Channel with the second support beam and arranged in this Oil cooler and / or combined with an oil cooler To connect oil-air separator. After going through the Oil cooler or combined oil cooler and oil-air Seperators The oil enters the closed, between crankcase bottom and caseback lying sump and of there to the pressure side of the oil pressure pump, which in turn also arranged in the first, the oil suction pump receiving support beams is, and is from the oil pressure pump on short ways supplied to the same support beam associated oil filter, from the integrated in the crankcase lower part, the oil supply to the camps arranged in the camps and about the crankcase upper part leads to the cylinder head. The distribution the oil to the storage chairs takes place via a along the bottom of the crankcase extending channel, the additionally stiffen the floor between the storage chairs.

Für die Ölsaugpumpe und die Öldruckpumpe erweist es sich im Rahmen der Erfindung als zweckmäßig, diese als Baueinheit auszuführen, die in den bevorzugt eine zylindrische Innenfläche aufweisenden Tragbalken axial eingeschoben wird, wobei durch entsprechende, passende Zuordnung die Anschlüsse an Saug- und Druckseiten der jeweiligen Ölzu- und Abführungen hergestellt werden. Bevorzugt sind sowohl die Ölsaugpumpe wie auch die Öldruckpumpe als Zahnradpumpen ausgebildet, wobei die angetriebenen Zahnräder koaxial auf der gleichen Welle sitzen und die beiden Pumpen modulartig aneinander gebaut sind.For the oil suction pump and the oil pressure pump, it proves to be Frame of the invention as appropriate, this as a unit in the preferred a cylindrical inner surface having axially projecting support beam, wherein by appropriate, appropriate assignment to the connections Suction and pressure sides of the respective oil inlets and outlets getting produced. Preference is given to both the oil suction pump as also formed the oil pressure pump as a gear pump, wherein the driven gears are coaxial on the same shaft sit and the two pumps built modularly together are.

Für den Öl-Luft-Seperator erweist sich eine patronenartige Gestaltung als zweckmäßig, bei der der Öl-Luft-Seperator im Hinblick auf seine Zusatzfunktion als Ölkühler quasi als Doppelrohrzylinder ausgebildet ist, über den außenseitig das Öl geführt wird und durch den zwischen innerem und äußerem Mantel die Kühlflüssigkeit fließt, wobei die Separierung der abzutrennenden Luft bevorzugt über Außen- und Innenmantel durchsetzende schlitzartige Ausnehmungen erfolgt. Da das Öl bei der erfindungsgemäßen Lösung bevorzugt in etwa tangential gegen den Außenmantel zugeführt wird und der Außenmantel bevorzugt mit einer insbesondere gewendelten Leitvorrichtung versehen ist, wird das Öl aufgrund der Führung radial nach außen geschleudert und tritt durch im Tragbalken vorgesehene Aussparungen in den Ölsumpf über. Infolge des leichten Überdruckes, der in dem Ölsystem herrscht, tritt die Luft über die genannten Lüftungsschlitze auf den zentralen, durch den Innenmantel begrenzten Abluftkanal über, der auf einen Ringraum des Tragbalkens ausmündet, der einen in einem Lagerbock vorgesehenen Luftkanal anschneidet.For the oil-air Seperator proves to be a cartridge-like Design as appropriate, in which the oil-air seperator in With regard to its additional function as an oil cooler virtually as a double-tube cylinder is formed, on the outside of the oil and through the between inner and outer coat the cooling liquid flows, the separation of the separated Air preferably over the outer and inner sheath passing slit-like recesses takes place. Because the oil in the solution according to the invention preferably approximately tangentially is supplied against the outer jacket and the outer sheath preferred with a particular coiled guide is provided, the oil is due to the guide radially to hurled outside and passes through provided in the stringers Recesses in the oil sump over. Due to the slight overpressure, which prevails in the oil system, the air passes over the said vents on the central, through the Inner sheath delimited exhaust duct over, leading to an annulus the support beam opens, the one in a bearing block slits provided air duct.

Die Erfindung kombiniert somit in besonders vorteilhafter Weise eine besonders steife Gehäuseausführung einer Kolbenbrennkraftmaschine mit einer besonders raumsparenden Bauweise. The invention thus combines in a particularly advantageous manner Way a particularly rigid housing design of a reciprocating internal combustion engine with a particularly space-saving design.

Weitere Einzelheiten und Merkmale der Erfindung ergeben sich aus den Ansprüchen. Im Übrigen wird die Erfindung nachfolgend ergänzend anhand eines Ausführungsbeispieles näher erläutert, das eine dreizylindrige Hubkolbenbrennkraftmaschine zum Ausgangspunkt hat. Es zeigen im Einzelnen:

Fig. 1
eine schematisierte, perspektifische Darstellung eines Kurbelgehäuseunterteils einer dreizylindrigen Brennkraftmaschine,
Fig. 2
den Ölkreislauf einer solchen Brennkraftmaschine im Schema,
Fig. 3
eine Draufsicht auf ein Kurbelgehäuseunterteil, im Wesentlichen entsprechend dem in Fig. 1 dargestellten,
Fig. 4
eine stirnseitige Ansicht des Kurbelgehäuseunterteils gemäß Fig. 3 in Richtung des Pfeiles IV in Fig. 3,
Fig. 5 - 10
Schnittdarstellungen durch das Kurbelgehäuseunterteil gemäß Fig. 3 entsprechend den Schnittführungen V-V bis X-X,
Fig. 11
eine schematisierte Darstellung einer Ölpumpeneinheit bestehend aus einer Ölsaugpumpe und einer Öldruckpumpe,
Fig. 12
eine Schnittdarstellung eines mit einem Ölkühler kombinierten Öl-Luft-Seperators,
Fig. 13
einen Schnitt gemäß Linie XIII-XIII in Fig. 12, und
Fig. 14
eine der Fig. 12 entsprechende Darstellung, jedoch in einer zur Zeichenebene gemäß Fig. 12 um 90° gedrehten Zeichenebene.
Further details and features of the invention will become apparent from the claims. Incidentally, the invention will be explained in more detail below with reference to an embodiment which has a three-cylinder reciprocating internal combustion engine to the starting point. They show in detail:
Fig. 1
a schematic, perspective view of a crankcase lower part of a three-cylinder internal combustion engine,
Fig. 2
the oil circuit of such an internal combustion engine in the diagram,
Fig. 3
a plan view of a crankcase lower part, substantially corresponding to that shown in Fig. 1,
Fig. 4
an end view of the crankcase lower part of FIG. 3 in the direction of arrow IV in Fig. 3,
Fig. 5-10
Sectional views through the crankcase lower part of FIG. 3 corresponding to the sectional guides VV to XX,
Fig. 11
a schematic representation of an oil pump unit consisting of a Ölsaugpumpe and an oil pressure pump,
Fig. 12
a sectional view of a combined with an oil cooler oil-air separator,
Fig. 13
a section along line XIII-XIII in Fig. 12, and
Fig. 14
a representation corresponding to FIG. 12, but in a drawing plane rotated by 90 ° relative to the drawing plane according to FIG. 12.

In der Darstellung gemäß Fig. 1 ist eine stark schematisierte Prinzipdarstellung eines Kurbelgehäuseunterteiles 1 einer bezüglich Kurbelgehäuseoberteil und Zylinderkopf nicht dargestellten Hubkolbenbrennkraftmaschine gezeigt, die dreizylindrig ausgeführt ist und bei der das Unterteil 1 Lagerstühle 2 aufweist, die quer zur Erstreckungsrichtung der hier nicht dargestellten Kurbelwelle liegen, Aufnahmen 3 für die Lager der Kurbelwelle aufweisen und eine Verbindung zwischen den seitlichen Begrenzungen des Kurbelgehäuseunterteiles herstellen. Als seitliche Begrenzungen dienen rohrförmig ausgebildete Tragbalken 4, 5, die anhand der Darstellungen gemäß Fig. 4 bis 10 im Einzelnen bezüglich ihres Aufbaus und ihrer Funktion noch näher erläutert werden.In the illustration of FIG. 1 is a highly schematic Schematic representation of a crankcase lower part 1 of a respect Crankcase shell and cylinder head, not shown Reciprocating internal combustion engine shown, the three-cylinder is executed and in which the lower part 1 storage 2 that does not cross the direction of extension of the here shown crankshaft, shots 3 for the bearings have the crankshaft and a connection between the Make lateral boundaries of the crankcase lower part. As lateral boundaries are tubular Support beam 4, 5, based on the representations of FIG. 4th to 10 in detail regarding their structure and their function will be explained in more detail.

In Fig. 1 ist auch veranschaulicht, dass die Tragbalken 4 in der erfindungsgemäßen Ausgestaltung nicht nur als Bestandteil des Kurbelgehäuseunterteiles 1 zu dessen Versteifung dienen, sondern auch als Aufnahme für Aggregate dienen können, wobei diese Aggregate, wie hier lediglich zu Veranschaulichungszwecken gezeigt, sowohl stirnseitig wie auch von der Seite in die Tragbalken 4, 5 eingeschoben bzw. eingesetzt werden können. Als Beispiel für solche in die Tragbalken 4, 5 von der Stirnseite her einzuschiebende Aggregate ist eine Ölpumpe 6 zu nennen, die in den Tragbalken 4 an dessen einem Ende stirnseitig eingeschoben wird, wobei bevorzugt dieser Stirnseite des Unterteiles 1 ein über den stirnseitigen Lagerstuhl 2 vorspringender, äußerer Wandteil 7 des Kurbelgehäuseunterteils zugeordnet sein kann, so dass die Ölpumpe 6 mit dem ihr zugeordneten Antriebsritzel oder Kettenrad 8 und dem zugehörigen Antriebsmittel, so beispielsweise einem Kettentrieb in einem Schacht des Kurbelgehäuses liegt, der bezüglich des Kurbelgehäuseunterteils 1 seitlich über den vorspringenden Wandteil 7 begrenzt ist, und der über einen nicht dargestellten Deckel abzuschließen ist. Während der Tragbalken 4 in Höhe des stirnseitigen Lagerstuhles 2 endet, ist der Tragbalken 5 bis auf die Anschlussebene des Wandteiles 7 für den nicht dargestellten Deckel vorgezogen, so dass hier beispielsweise ein Aggregat einzubringen ist, das über den Deckel abgedichtet und über einen stirnseitigen, den Deckel durchsetzenden Anschluss versorgt werden kann.In Fig. 1 it is also illustrated that the supporting beams 4 in the embodiment of the invention not only as a component serve the crankcase lower part 1 to the stiffening, but can also serve as a receptacle for aggregates, wherein these aggregates, as for illustrative purposes only shown, both frontally as well as from the side in the support beams 4, 5 can be inserted or inserted. As an example of such in the stringers 4, 5 of the Front side to be inserted units is an oil pump. 6 to call in the stringers 4 at one end is inserted frontally, preferably this end face of the lower part 1 a on the front bearing block 2 projecting, outer wall part 7 of the crankcase lower part can be assigned so that the oil pump 6 with her associated drive pinion or sprocket 8 and the associated Drive means, such as a chain drive in a shaft of the crankcase, with respect to the Crankcase lower part 1 laterally over the projecting Wall part 7 is limited, and the one not shown Cover is complete. During the stringers 4 in height ends of the front bearing block 2, is the support beam 5 except for the connection level of the wall part 7 for not shown preferred lid, so here for example an aggregate is to be introduced, which is sealed over the lid and a frontal, the lid penetrating Connection can be supplied.

Dass der Tragbalken 5 gegebenenfalls auch von der Gegenseite mit einem einsteckbaren Aggregat bestückt werden kann, ist in Fig. 1 für das Aggregat 9 gezeigt. Gegebenenfalls können auch auf den gleichen Tragbalken von gegenüberliegenden Seiten Aggregate eingeschoben werden. Eine Nutzung des Tragbalkens 4 mit stirnseitigem Einschub an dem einen Ende und radialem Einsatz eines Aggregates, hier eines Ölfilters 10 nahe dem anderen stirnseitigen Ende des Tragbalkens 4 ist in Fig. 1 ebenfalls veranschaulicht, wobei, wie im Überblick anhand der Fig. 2 erläutert, eine solche Grundanordnung zu sehr vorteilhaften und einfachen Versorgungswegen in der Ölversorgung der Brennkraftmaschine führt. Dies insbesondere dann, wenn das Kurbelgehäuseunterteil 1, was in Fig. 1 nicht erkennbar ist, nicht nur bezüglich der seitlichen Begrenzung durch die Tragbalken 4 und 5, sondern auch bezüglich der bodenseitigen Begrenzung doppelwandig ausgeführt ist, nämlich, wie in den Schnittdarstellungen gemäß Fig. 5 bis 10 detaillierter dargestellt, einen Kurbelwannenboden 11 in der Verbindung der Lagerstühle 2 und in der Verbindung der unteren Begrenzungen der Tragbalken 4 und 5 einen Gehäuseboden 12 aufweist, wie er im Bereich des vorstehenden Wandteiles 7 erkennbar ist.That the support beam 5, if necessary, from the opposite side can be equipped with a pluggable unit is in Fig. 1 for the unit 9 shown. If necessary, too on the same stringers from opposite sides aggregates be inserted. Use of the support beam 4 with frontal insertion at one end and radial Use of an aggregate, here an oil filter 10 near the other front end of the support beam 4 is in Fig. 1st also illustrated, where, as an overview using the Fig. 2 explains, such a basic arrangement to very advantageous and simple supply routes in the oil supply of Internal combustion engine leads. This especially if the Crankcase lower part 1, which can not be seen in FIG. 1, not only with regard to the lateral boundary of the stringers 4 and 5, but also with respect to the bottom boundary is executed double-walled, namely, as in the Sectional views of FIG. 5 to 10 shown in more detail, a crankcase bottom 11 in the connection of the storage chairs 2 and in the connection of the lower limits the support beam 4 and 5 has a housing bottom 12, as he can be seen in the region of the protruding wall part 7.

Eine solche Doppelbödigkeit des Kurbelgehäuseunterteiles 1 erbringt nicht nur eine weitere Erhöhung der Festigkeit für das Kurbelgehäuseunterteil, sondern erweist sich auch unter Geräuschgesichtspunkten als sehr vorteilhaft, wobei die erfindungsgemäße Ausgestaltung bei geringem Mehraufwand für das Kurbelgehäuseunterteil 1 für die Brennkraftmaschine eine Trockensumpfschmierung ermöglicht, wie sie unter dem Gesichtspunkt einer verbesserten Ölkühlung für eine Maschine hoher Leistung zweckmäßig ist, zumal bei der erfindungsgemäßen Lösung die Leitungswege im Kurbelgehäuseunterteil 1 integriert werden können, so dass diesbezügliche Mehraufwendungen entfallen und zudem eine besonders raumsparende Bauweise realisierbar ist.Such ambiguity of the crankcase lower part. 1 not only provides a further increase in strength for the crankcase lower part, but also proves to be Noise aspects are very advantageous, the inventive Design with little overhead for the Crankcase lower part 1 for the internal combustion engine a Dry sump lubrication allows, as seen from the point of view an improved oil cooling for a machine high performance is appropriate, especially in the inventive Solution integrated the conduction paths in the crankcase lower part 1 can be, so that in this respect additional expenses omitted and also a particularly space-saving design feasible is.

Fig. 2 zeigt, wie bereits angesprochen, eine Schemadarstellung eines solchen Ölkreislaufes, wobei in diesem Ölkreislauf auch die dem Kurbelgehäuseoberteil bzw. dem Zylinderkopf zugeordneten Leitungswege veranschaulicht sind.Fig. 2 shows, as already mentioned, a schematic representation of such an oil circuit, being in this oil circuit also associated with the crankcase upper part or the cylinder head Wiring paths are illustrated.

Dem anhand Fig. 1 geschilderten grundsätzlichen Aufbau einer Hubkolbenbrennkraftmaschine mit zugehörigem Kurbelgehäuseunterteil 1 entsprechend ist das Ölkreislaufschema gemäß Fig. 2 gestaltet, wobei ausgehend von der vorstehend angesprochenen Trockensumpfschmierung die Ölpumpe 20 als kombinierte Ölsaugpumpe 21 und Öldruckpumpe 22 ausgebildet ist. Über die Ölsaugpumpe 21 wird dabei das von den Schmierstellen zurücklaufende Öl aus einem entsprechenden Sammelkanal, hier veranschaulicht durch eine Fangrinne 23, saugseitig aufgenommen und über einen Kanal 24 einem Öl-Luft-Seperator 25, der gegebenenfalls auch eine Ölkühlerfunktion beinhaltet, zugeführt, wobei der Öl-Luft-Seperator 25 bezogen auf eine Darstellung gemäß Fig. 1 einem anderen Tragbalken, nämlich dem Tragbalken 5 zugeordnet wäre als die Ölpumpe 20, die in den Tragbalken 4 eingesteckt wird.With reference to FIG. 1 described basic structure of a Reciprocating internal combustion engine with associated crankcase lower part 1 corresponding to the oil circuit diagram of FIG. 2 designed, starting from the above-mentioned Dry sump lubrication the oil pump 20 as a combined oil suction pump 21 and oil pressure pump 22 is formed. About the oil suction pump 21 is thereby returning from the lubrication points Oil from a corresponding collection channel, illustrated here by a gutter 23, added to the suction side and via a channel 24 an oil-air separator 25, if necessary also includes an oil cooler function, supplied, wherein the oil-air separator 25 based on a representation 1, another support beam, namely the support beam 5 would be assigned as the oil pump 20, in the support beam. 4 is inserted.

Vom Öl-Luft-Seperator 25 fließt das Öl über einen Kanal 26 der Saugseite der Öldruckpumpe 22 zu, wobei der Kanal 26 auch eine Speicherfunktion, realisiert beispielsweise durch einen Vorratsbehälter oder einen außerhalb der Kurbelwanne liegenden Ölsumpf, beinhaltet. Die Öldruckpumpe 22 fördert auf den Ölfilter 27, und ausgehend vom Ölfilter 27 wird das von der Öldruckpumpe 22 geförderte Öl auf die einzelnen Schmierstellen verteilt. Veranschaulicht sind diesbezüglich Schmierstellen der Kurbelwellenlager, die über einen im Kurbelgehäuseunterteil liegenden Kanal 29 versorgt werden und die symbolisch jeweils bei 30 dargestellt sind.From the oil-air separator 25, the oil flows through a channel 26th the suction side of the oil pressure pump 22, wherein the channel 26 also a memory function, realized for example by a Reservoir or lying outside the crankcase Oil sump, includes. The oil pressure pump 22 promotes the Oil filter 27, and starting from the oil filter 27 is that of the Oil pressure pump 22 pumped oil to the individual lubrication points distributed. Illustrated in this regard are lubrication points the crankshaft bearing, which has a crankcase in the lower part lying channel 29 are supplied and the symbolic are each shown at 30.

Während der Kanal 29, wie auch in den Schnitten gemäß Fig. 5 und 10 veranschaulicht, im Kurbelgehäuseunterteil verläuft, dessen Trennebene zum Kurbelgehäuseoberteil durch die strichlierte Linie 31 dargestellt ist, verläuft ein Anschlusskanal 32 nach oben zum Kurbelgehäuseoberteil und dieses durchsetzend bis in den Zylinderkopf, dessen Trennebene zum Kurbelgehäuseoberteil durch die strichlierte Linie 33 veranschaulicht ist. Im nicht weiter dargestellten Kurbelgehäuseoberteil sind vom Anschlusskanal 32 Zuführleitungen 35 zu Ölspritzen 36 abgezweigt, über die Öl auf die Unterseiten der hier nicht dargestellten und in den symbolisierten Zylindern 37 laufenden Kolben gespritzt wird.During the channel 29, as well as in the sections of FIG. 5 and Fig. 10 illustrates running in the crankcase lower part, whose parting plane to the crankcase upper part by the dashed line 31 is shown, runs a connection channel 32 up to the crankcase upper part and this penetrating into the cylinder head, its parting plane to the crankcase upper part by the dashed line 33rd is illustrated. In not shown crankcase upper part are from the connection channel 32 feed lines 35th branched off to oil spray 36, over the oil on the undersides not shown here and in the symbolized cylinders 37 running piston is injected.

Im Zylinderkopf verzweigt sich der Anschlusskanal 32 auf Versorgungsleitungen 38, 39, die zu den einzelnen Schmierstellen des Zylinderkopfes führen. Das von diesen Schmierstellen zurücklaufende Öl gelangt wieder zur Fangrinne 23, von der ausgehend ein neuer Durchlauf beginnt.In the cylinder head, the connection channel 32 branches to supply lines 38, 39, to the individual lubrication points lead the cylinder head. The returning from these lubrication points Oil returns to the gutter 23, starting from the a new pass begins.

Eine erfindungsgemäße Realisierung des in Fig. 2 schematisch dargestellten Ölkreislaufes wird bezogen auf das Kurbelgehäuseunterteil 40, das weitgehend schematisiert in Draufsicht in Fig. 3 dargestellt ist, anhand der Fig. 4 bis 10 näher erläutert. Hierbei sind die Fig. 5 bis 10 teilweise abstrahierte Schnitte gemäß den entsprechenden Schnittlinien V-V bis X-X in Fig. 3. An inventive implementation of the in Fig. 2 schematically shown oil circuit is based on the crankcase lower part 40, which is largely schematic in plan view Fig. 3 is shown, with reference to FIGS. 4 to 10 explained in more detail. Here, FIGS. 5 to 10 are partially abstracted Sections according to the corresponding section lines V-V to X-X in Fig. 3.

In der Draufsicht auf das Kurbelgehäuse 40 gemäß Fig. 3 sind die Lagerstühle mit 41 bezeichnet, und die über die quer zur Längsachse 42 des Kurbelgehäuseunterteiles 40 verlaufenden Lagerstühle 41 verbundenen seitlichen Tragbalken mit 43 und 44. Die seitlichen Tragbalken 43 und 44 sind dabei wiederum rohrförmig ausgebildet, wie die Schnitte gemäß Fig. 5 bis 10 und die stirnseitige Ansicht gemäß Fig. 4 zeigen. Aus diesen Darstellungen ist des Weiteren zu erkennen, dass das Kurbelgehäuseunterteil 40 doppelbödig gestaltet ist und einen inneren Kurbelwannenboden 45 sowie einen äußeren Gehäuseboden 46 aufweist. Grob gesagt bildet der Kurbelwannenboden 45 eine kreisförmige, zur Längsachse 42 konzentrische und an die Tragbalken 43, 44 an deren einander zugewandten Seiten tangential anlaufende Schale, zu der der Gehäuseboden 46 radial beabstandet ist und bei grundsätzlich konzentrischer Anordnung eine korrespondierende Außenschale bildet, die an die Tragbalken 43, 44 außenseitig anschließt. Kurbelwannenboden 45 und Gehäuseboden 46 sind, wie insbesondere die Fig. 5 und 10 zeigen, im Bereich der Lagerstühle 41 miteinander verbunden, wobei die Lagerstühle 41 mit dem Kurbelwannenboden 45 und dem Gehäuseboden 46 einstückig vergossen sind.In the plan view of the crankcase 40 of FIG. 3 are the camp chairs with 41 designates, and over the across the Longitudinal axis 42 of the crankcase lower part 40 extending Storage Chairs 41 connected lateral support beams with 43 and 44. The lateral support beams 43 and 44 are again formed like the sections of FIG. 5 to 10 and the frontal view of FIG. 4 show. From these Illustrations can also be seen that the crankcase lower part 40 doppelbödig is designed and an inner Crankcase bottom 45 and an outer housing bottom 46th having. Roughly speaking, the crankcase bottom 45 forms a circular, concentric to the longitudinal axis 42 and to the Support beam 43, 44 tangentially at their sides facing each other approaching shell to which the housing bottom 46 radially is spaced apart and at basically concentric arrangement forms a corresponding outer shell, to the Support beam 43, 44 connects on the outside. Crankcase bottom 45 and housing bottom 46 are, in particular Figs. 5 and 10, connected to one another in the area of the storage chairs 41, the storage chairs 41 with the crankcase bottom 45th and the housing bottom 46 are cast in one piece.

Die Lagerstühle 41 weisen Durchgangsbohrungen 47 für hier nicht dargestellte Zuganker auf, über die Zylinderkopf, Kurbelgehäuseoberteil und Kurbelgehäuseunterteil gegeneinander zu verspannen sind. Den Durchgangsbohrungen 47 sind vom Gehäuseboden 46 ausgehende, schachtförmige Vertiefungen 48 zugeordnet, so dass die hier nicht dargestellten, die Durchgangsbohrungen 47 durchsetzenden Zuganker über in den schachtförmigen Vertiefungen 48 liegende Muttern praktisch gegen die Lagerstühle 41, von der Unterseite des Kurbelgehäuseunterteiles 40 her, verschraubbar sind. Für die Zuganker erweist es sich dabei in hier nicht dargestellter Weise als zweckmäßig, sie im Zylinderkopf, bevorzugt durch Einschrauben in entsprechende Aufnahmebohrungen zu verankern, so dass das hier nicht dargestellte Kurbelgehäuseoberteil zwischen Zylinderkopf und Kurbelgehäuseunterteil 40 eingespannt ist und die Teile des Kurbelgehäuses über die Zuganker lediglich auf Druck beansprucht sind.The storage chairs 41 have through holes 47 for here tie rods, not shown, on the cylinder head, crankcase upper part and crankcase base against each other to be braced. The through holes 47 are from the housing bottom 46 outgoing, shaft-shaped recesses 48 assigned, so that the holes not shown here, the through holes 47 passing through tie rods in the shaft-like recesses 48 lying nuts practically against the storage chairs 41, from the bottom of the crankcase lower part 40 ago, are screwed. For the tie rods it proves to be in a manner not shown here as appropriate, they in the cylinder head, preferably by screwing anchored in corresponding receiving holes, so that the not shown crankcase upper part between the cylinder head and crankcase lower part 40 is clamped and the Parts of the crankcase on the tie rods only on Pressure are claimed.

In Verwirklichung eines Ölkreislaufes im Wesentlichen entsprechend jenem gemäß Fig. 2, ist ausgehend von der in Fig. 4 dargestellten Stirnseite in dem Tragbalken 43 eine kombinierte, aus einer Ölsaugpumpe 21 und einer Öldruckpumpe 22 bestehende Ölpumpe 20 eingesetzt, wie sie anhand von Fig. 11 noch in ihrem Aufbau näher beschrieben wird, und in dem Tragbalken 44 ein mit einem Ölkühler zu einer Baueinheit zusammengefasster Öl-Luft-Seperator 49 gemäß Fig. 12 bis 14. Im Hinblick auf ein besseres Verständnis der Ölkanalführungen im Kurbelgehäuseunterteil 40 werden zunächst die Darstellungen gemäß Fig. 11 und gemäß Fig. 12 bis 14 näher erläutert.In the realization of an oil circuit substantially corresponding that of FIG. 2, starting from the in Fig. 4th shown in the support beam 43 a combined, from an oil suction pump 21 and an oil pressure pump 22 existing Oil pump 20 used, as with reference to FIG. 11 yet is described in more detail in their construction, and in the stringers 44 a summarized with an oil cooler to a unit Oil-air Seperator 49 of FIG. 12 to 14. With regard to on a better understanding of the oil channel guides in the crankcase lower part 40 first the representations according to Fig. 11 and according to FIGS. 12 to 14 explained in more detail.

Die Ölpumpe 20 gemäß Fig. 11 mit der Ölsaugpumpe 21 und der Öldruckpumpe 22 umfasst für die Ölsaugpumpe 21 und die Öldruckpumpe 22 je einen zylindrischen Außenmantel 50, 51, die passend und über in entsprechende Nuten 52 eingelegte Dichtringe gegeneinander und gegenüber dem Tragbalken 43 abgedichtet in diesem angeordnet sind. Ölsaugpumpe 21 und Öldruckpumpe 22 sind jeweils als Zahnradpumpen ausgebildet, wobei deren angetriebene und gleichachsig angeordnete Zahnräder mit 53 und 54 bezeichnet und drehfest auf einer gemeinsamen Welle 55 befestigt sind. Die Gegenräder, nämlich die Zahnräder 56 und 57, sind ebenfalls koaxial angeordnet und auf einer gemeinsamen Achse 58 gelagert. Die Welle 55 ist drehfest mit einem Antriebszahnrad oder Kettenrad 59 verbunden, das wie anhand der Fig. 1 erläutert, in den herkömmlichen Aggregateantrieb integriert ist. The oil pump 20 of FIG. 11 with the Ölsaugpumpe 21 and the Oil pressure pump 22 includes for the oil suction pump 21 and the oil pressure pump 22 each have a cylindrical outer shell 50, 51, the fitting and over in corresponding grooves 52 inserted sealing rings sealed against each other and against the support beam 43 are arranged in this. Oil suction pump 21 and oil pressure pump 22 are each formed as gear pumps, wherein the driven and coaxially arranged gears with 53 and 54 and rotatably on a common shaft 55th are attached. The mating wheels, namely the gears 56 and 57, are also arranged coaxially and on a common Axis 58 stored. The shaft 55 is rotatable with a Drive gear or sprocket 59 connected, as shown Fig. 1 explains, in the conventional unit drive is integrated.

Ölsaugpumpe 21 und Öldruckpumpe 22 saugen jeweils über radiale Fenster 60, 61 an, wobei die entsprechenden Saugfenster axial voneinander getrennt, also mit Abstand zueinander über einen gleichen Umfangswinkelbereich sich erstreckend angeordnet sind und bezogen auf die Montagelage der Ölpumpe 20 im Tragbalken 43 eine Lage einnehmen, in der sie jeweils zu einem am Innenumfang des Tragbalkens 43 liegenden Versorgungsfenster in Überdeckung angeordnet sind. Das Versorgungsfenster, das mit dem Saugfenster 60 der Ölsaugpumpe 21 korrespondiert, ist im Schnitt gemäß Fig. 6 ersichtlich und mit 62 bezeichnet, wobei dieses Versorgungsfenster 62 über einen Saugkanal 63 gespeist wird, der, wie Fig. 5 zeigt, von der als Sammelkanal wirkenden Fangrinne 23 gemäß Fig. 3 ausgeht. Dieser Sammelkanal ist in Fig. 5 bis 10 mit 64 bezeichnet und erstreckt sich bei einem Rundrohr entsprechenden Profil zwischen der der Kurbelwanne 67 zugewandten Seite des Tragbalkens 43 und der benachbarten Unterseite des Kurbelwannenbodens 45. Zwischen den Lagerstühlen 41 ist der Anschluss des Kurbelwannenbodens 45 an die ihm zugewandte Seite des Tragbalkens 43 aufgebrochen, derart, dass Fangschlitze 65 als Öffnungen für das zurücklaufende Öl gebildet werden, über die das Öl in den Sammelkanal 64 gelangt, der im Bereich dieser Fangschlitze 65 den zwischen Kurbelwannenboden 45 und Gehäuseboden 46 liegenden Ölsumpf 66 vom Kurbelwannenraum 67 trennt.Oil suction pump 21 and oil pressure pump 22 suck each via radial Window 60, 61 on, with the corresponding suction windows axially separated from each other, so at a distance from each other a same circumferential angle range extending arranged are and in relation to the mounting position of the oil pump 20 in Tragbalken 43 occupy a position in which they each to a on the inner circumference of the supporting beam 43 supply window are arranged in overlap. The supply window, that corresponds to the suction window 60 of the oil suction pump 21, is shown in section in FIG. 6 and 62 designated, this supply window 62 via a Suction channel 63 is fed, which, as shown in FIG. 5, of the acting as a collecting channel gutter 23 as shown in FIG. 3 goes out. This collection channel is indicated in Fig. 5 to 10 with 64 and extends in a round tube corresponding profile between the crankcase 67 facing side of the support beam 43 and the adjacent underside of the crankcase bottom 45. Between the storage chairs 41 is the connection of the Crankshaft bottom 45 to the side facing him the support beam 43 broken, such that catch slots 65 as Openings for the returning oil are formed over the the oil enters the collection channel 64, in the area of this Catch slots 65 between the crankcase bottom 45 and housing bottom 46 lying sump 66 from the crankcase space 67th separates.

Infolge der durch den rohrförmigen Sammelkanal 64 gebildeten Unterfangung für die Fangschlitze 65 ist auch im Bereich der Fangschlitze 65 eine durchgängige Doppelbödigkeit gewährleistet, wobei über den Sammelkanal auch die durch die Schlitze 65 bedingte Schwächung ausgeglichen wird, da der Sammelkanal die entsprechende Stützwirkung übernimmt.As a result of the formed by the tubular collecting channel 64 Underpinning for the catch slots 65 is also in the field of Catch slits 65 ensures a continuous ambiguity, whereby over the collection channel also through the slots 65 conditional weakening is compensated because the collection channel the corresponding supporting effect takes over.

Druckseitig ist die Ölsaugpumpe 21 über ein in Fig. 11 nicht dargestelltes Radialfenster mit einem Fenster 68 (Fig. 5) im Tragbalken 43 in Überdeckung, das auf einen Kanal 69 ausmündet, der längs der Stirnseite des in Fig. 4 in Frontalansicht dargestellten Lagerstuhles 41 verläuft und auf ein Zufuhrfenster ausmündet, das im Tragbalken 44 innenseitig in dem Axialbereich vorgesehen ist, der vor dem stirnwandseitigen Lagerstuhl 41 gemäß Fig. 4 liegt, so dass der Kanal 69 eine unmittelbare und in das Kurbelgehäuseunterteil integrierte Verbindung zwischen der Druckseite der Saugpumpe 21 und dem Tragbalken 44 herstellt, in den der mit einem Ölkühler kombinierte Öl-Luft-Seperator gemäß Fig. 12 bis 14 eingesteckt ist.On the pressure side, the oil suction pump 21 via a in Fig. 11 is not illustrated radial window with a window 68 (Fig. 5) in Supporting beam 43 in coverage, which opens on a channel 69, along the front side of the in Fig. 4 in a front view shown bearing chair 41 extends and a feed window emanating in the support beam 44 inside in the Axialbereich is provided, the front of the front wall Bearing 41 according to FIG. 4 is located, so that the channel 69 a immediate and integrated into the crankcase bottom Connection between the pressure side of the suction pump 21 and the Tragbalken 44 manufactures, in which combined with an oil cooler Oil-air Seperator shown in FIG. 12 to 14 inserted is.

Der Seperator gemäß Fig. 12 bis 14 weist eine Doppelmantelkonstruktion auf mit einem Außenmantel 70 und einem Innenmantel 71, wobei Außen- und Innenmantel konzentrisch zueinander liegen und gemeinsam einen Ringraum 72 einschließen. Der Innenmantel 71 seinerseits umschließt einen Raum 73. Außenmantel 70 und Innenmantel 71 sind im Bereich des Endes 74 des insgesamt mit 49 bezeichneten, mit einem Ölkühler kombinierten Öl-Luft-Seperators verbunden, derart, dass ein axialer Zufluss zum Ringraum 72 vom im Durchmesser verjüngten Ende des Seperators 49 aus über den Anschluss 76 gegeben ist, der in einer stirnseitigen Abdeckung des Tragbalkens 44 dichtend zu befestigen ist. Am gegenüberliegenden Ende des Seperators 49 sind Außenmantel 70 und Innenmantel 71 jeweils axial aufgeweitet und bilden jeweils einen Bund, wobei dadurch, dass der Innenmantel 71 länger ist als der Außenmantel 70, zwischen den Bunden 77 und 78 ein Ringraum entsteht, über den der Ringraum 72 radial nach außen geöffnet ist und der mit 79 bezeichnet ist. Die Bunde 77 und 78 dichten bei dem patronenartig ausgestalteten und in den im Innenraum zylindrischen Tragbalken 44 eingesetzten Seperator 49 den Ringraum 79 gegenüber der Innenfläche des Tragbalkens 44 ab. The separator according to FIGS. 12 to 14 has a double-jacket construction on with an outer jacket 70 and an inner jacket 71, wherein the outer and inner shells concentric with each other lie and together include an annulus 72. The inner jacket 71 in turn encloses a space 73. outer jacket 70 and inner jacket 71 are in the region of the end 74 of the total designated 49, combined with an oil cooler Connected oil-air separator, such that an axial Inflow to the annulus 72 of the diameter tapered end of the separator 49 is provided via the terminal 76, the in a frontal cover of the supporting beam 44 sealing to attach. At the opposite end of the Seperator 49 outer jacket 70 and inner jacket 71 are each axially expanded and each form a covenant, whereby in that the inner jacket 71 is longer than the outer jacket 70, between the coils 77 and 78, an annular space is created over the the annular space 72 is open radially outward and the 79th is designated. The bundles 77 and 78 seal in the cartridge-like designed and cylindrical in the interior Support beam 44 Seperator 49 used the annular space 79 opposite the inner surface of the support beam 44 from.

Über einen Teil ihrer Länge sind Außenmantel 70 und Innenmantel 71, wie Fig. 13 zeigt, mit radialen Durchbrechungen in Form von einander diametral gegenüberliegenden Schlitzen 80 versehen, die die Verbindung zum vom Innenmantel 71 umschlossenen Raum 73 herstellen, der über den Bund 78 hinaus nach der vom zuflussseitigen Ende 76 entgegengesetzten Seite offen ist.Over part of their length are outer sheath 70 and inner sheath 71, as shown in FIG. 13, with radial openings in Shape of diametrically opposed slots 80 provided that the connection to the inner jacket 71 enclosed Make room 73 which goes beyond the collar 78 the opposite side of the inflow end 76 open is.

Am Außenumfang ist der Mantel 70 mit einer Leitvorrichtung versehen, die hier durch eine über die Länge des Mantels 70 durchlaufende rippenförmige Wendel 81 gebildet ist, die die Funktion hat, das über den Kanal 69 von der Druckseite der Ölsaugpumpe 21 dem Innenraum des Tragbalkens 43 über das dort vorgesehene Fenster radial zugeführte Öl längs des patronenartig ausgebildeten Seperators 49 zu führen. Dabei tritt eine Trennung des Öls von der im Öl mitgeführten Luft ein, wobei die Luft über die Schlitze 80 in den Raum 73 radial nach innen gelangt, während das Öl gegen die Innenfläche des Tragbalkens 44 gedrückt wird. Um ein Ablaufen des Öls aus dem zwischen Seperator 49 und Innenfläche des Tragbalkens 44 abgegrenzten Raum zu ermöglichen, ist der Tragbalken 44, wie die Fig. 5 bis 8 zeigen, im entsprechenden Längsabschnitt mit radialen Durchbrechungen 82 versehen, die auf den als Ölvorratsbehälter oder Ölsumpf 66 dienenden Raum zwischen Kurbelwannenboden 45 und Gehäuseboden 46 ausmünden.On the outer circumference of the jacket 70 with a guide provided here by an over the length of the jacket 70th continuous rib-shaped helix 81 is formed, which is the Function has that over the channel 69 from the pressure side of the Ölsaugpumpe 21 the interior of the support beam 43 over there provided window radially supplied oil along the cartridge-like trained Seperators 49 lead. One occurs Separation of the oil from the air entrained in the oil, wherein the air over the slots 80 in the space 73 radially inward passes while the oil is against the inner surface of the support beam 44 is pressed. To drain the oil from the between seperator 49 and inner surface of the support beam 44 demarcated To enable space is the stringers 44, like Figs. 5 to 8 show, in the corresponding longitudinal section with radial openings 82 provided on the as an oil reservoir or sump 66 serving space between crankcase bottom 45 and housing bottom 46 open.

Der Sumpf 66 hat, wie die Schnittdarstellungen gemäß Fig. 5 bis 10 zeigen, im Bereich des von der Stirnwand gemäß Fig. 4 abgelegenen Endbereiches des Kurbelgehäuseunterteiles seine größte Tiefe, so dass sich das über die Durchbrechungen 82 dem Sumpf zugeführte Öl in diesem Bereich sammelt.The sump 66 has, as the sectional views of FIG. 5 10 show, in the region of the end wall according to FIG. 4 remote end portion of the crankcase lower part its greatest depth, so that the over the openings 82 collects the sump supplied oil in this area.

Wie bereits erwähnt ist der Seperator 49 funktional auch als Kühler ausgebildet. Während die separierte Luft dem Raum 73 zuströmt, und zwar über die Längsschlitze 80, erfolgt auf den Ringraum 72 ein Zufluss von Wasser über den Anschluss 76, der, wie bereits angesprochen, stirnseitig am über die frontseitige Stirnwand gemäß Fig. 4 vorstehenden Ende des Tragbalkens 44 vorgesehen ist, wobei diese Anordnung es in bevorzugter, hier aber nicht dargestellter Weise auch möglich macht, die Wasserpumpe druckseitig unmittelbar oder über kurze Leitungswege mit dem Anschluss 76 zu verbinden. Das über den Anschluss 76 als axialen Zufluss zugeführte Wasser durchströmt den Ringraum 72 unter Kühlung des längs des Außenmantels 70 strömenden Öles und tritt aus dem axialen Ringraum 72 über den radialen Ringraum 79 in einen Bereich des Tragbalkens 44 aus, in dem dessen Innenfläche ein Abströmfenster 83 aufweist, über das das Kühlwasser in einen Kanal 84 eintritt, der axial in Gegenrichtung zur Strömungsrichtung des Öles innerhalb des Seperators verläuft und bezogen auf eine dreizylindrige Brennkraftmaschine im längsmittleren Bereich, also im Bereich des dritten Zylinders auf eine Ausströmöffnung 85 endet, die in der oberen Abschlussebene des Kurbelgehäuseunterteiles 40 liegt, so dass das Wasser in einem entsprechenden Anschlusskanal des hier nicht dargestellten Kurbelgehäuseoberteiles den Zylindern bzw. dem Zylinderkopf zugeführt werden kann.As already mentioned, the Seperator 49 is also functionally as Cooler formed. While the separated air the room 73 flows, via the longitudinal slots 80, takes place on the Annulus 72 an inflow of water via the port 76, the, as already mentioned, frontally on the front side Front wall according to FIG. 4 projecting end of the supporting beam 44, this arrangement being preferred, but not shown here also makes possible the water pump on the pressure side directly or via short lines to connect to the terminal 76. That over the connection 76 flows through as an axial inflow water supplied the annular space 72 while cooling the length of the outer jacket 70th flowing oil and exits from the axial annular space 72 the radial annular space 79 in a region of the support beam 44th in which its inner surface has an outflow window 83, via which the cooling water enters a channel 84, the axially in the opposite direction to the flow direction of the oil within the Seperators runs and based on a three-cylinder Internal combustion engine in the longitudinal central region, ie in the region of the third cylinder to an outflow opening 85th ends in the upper end plane of the crankcase lower part 40, so that the water in a corresponding Connection channel of the crankcase upper part, not shown here fed to the cylinders or the cylinder head can be.

Die separierte Luft tritt, wie dargelegt, in den Raum 73 des Seperators 49 über und verlässt den Seperator 49 an dem dem Einströmende für das Wasser gegenüberliegenden Ende, wobei es in den geschlossenen Endbereich des Innenraumes des Tragbalkens 44 austritt. Dieser ist, wie Fig. 10 zeigt, in seinem Umfang mit einem Fenster 86 versehen, das auf einen Abluftkanal mündet.The separated air enters, as stated, in the space 73 of the Seperators 49 and leaves the separator 49 at the Incoming end opposite to the water, taking it in the closed end of the interior of the supporting beam 44 leaves. This is, as shown in FIG. 10, in his Scope provided with a window 86, which on an exhaust duct empties.

Als Abluftkanäle sind dabei im Rahmen der Erfindung langlochförmige Aussparungen 87 vorgesehen, die zwischen zentraler Aufnahme für das Kurbelwellenlager und seitlicher Begrenzung durch den jeweiligen Tragbalken 43 bzw. 44 in den Stegen der Lagerstühle 41 vorgesehen sind, wobei die langlochförmigen Aussparungen 87 neben ihrer Funktion als Abluftkanal auch der Durchführung der nicht dargestellten Zuganker dienen. Das Fenster 86 steht mit dem durch die langlochförmige Aussparung 87 gebildeten Ablauftkanal des Lagerstuhles 41 in Verbindung, der der rückwärtigen, also abtriebsseitigen Stirnwand des Kurbelgehäuseunterteiles 40 zugehört.As exhaust ducts are within the scope of the invention oblong-shaped Recesses 87 provided between the central Support for the crankshaft bearing and lateral limit through the respective support beam 43 and 44 in the webs of Storage chairs 41 are provided, wherein the slot-shaped Recesses 87 in addition to their function as an exhaust duct and the Implementation of the tie rods, not shown serve. The Window 86 is the through the slot-shaped recess 87 formed Ablauftkanal the bearing block 41 in conjunction, the rear, ie output side end wall of the Crankcase lower part 40 listened.

Fig. 10 zeigt des Weiteren, dass die durch die langlochförmigen Aussparungen 87 gebildeten Abluftkanäle auf der dem Tragbalken 44 zugewandten Seite auch als Entlüftungskanäle für den Ölsumpf 66 dienen und somit bis auf den Zwischenraum zwischen Kurbelwannenboden 45 und Gehäuseboden 46 frei durchlaufen. Die bezogen auf die gleichen Lagerstühle gegenüberliegenden, dem Tragbalken 43 benachbarten Abluftkanäle enden auf den Sammelkanal 64 auslaufend und ermöglichen damit eine Entlüftung des Kurbelwannenbereiches einschließlich des Bereiches des Sammelkanales.Fig. 10 further shows that through the slot-shaped Recesses 87 formed exhaust ducts on the support beam 44 side facing also as ventilation channels for serve the sump 66 and thus except for the space between Crankcase bottom 45 and housing bottom 46 pass freely. The opposite of the same camp chairs, the support beam 43 adjacent exhaust ducts end the collection channel 64 leaking and thus allow venting of the crankcase area including the area of the collection channel.

Wie die Schnittdarstellungen gemäß Fig. 5 bis 10 zeigen, nimmt der Abstand des Gehäusebodens 46 vom Kurbelwannenboden 46 gegen das rückwärtige Ende des Kurbelgehäuseunterteiles 40 zu, wobei durch einen stufenartigen Absatz im Bereich etwa des letzten Drittels ein tiefer liegender Bereich entsteht, der den eigentlichen Ölsumpf des zwischen Kurbelwannenboden 45 und Gehäuseboden 46 liegenden Ölsammelraumes bildet und von dem aus ein Saugkanal 88 längs des unteren Bereiches des Tragbalkens 43 zu einem Fenster in der Innenwandung des Tragbalkens 43 führt, das bei montierter Ölpumpe 20 in Überdekkung zum Saugfenster 61 der Druckpumpe 22 liegt. Hierbei liegen die den Saugfenstern 60 der Saugpumpe 21 und 61 der Druckpumpe 22 entsprechenden Saugöffnungen in der Innenwand des Tragbalkens 43 axial in Flucht zueinander, sind aber voneinander getrennt und von in Gegenrichtung zueinander verlaufenden Kanälen gespeist, wobei über entsprechende Dichtungen am Umfang der Ölpumpe 20, für die in Fig. 11 lediglich entsprechende Stichnuten 52 am Außenumfang der Ölpumpe 20 vorgesehen sind, mit einfachen Mitteln eine einwandfreie Trennung gewährleistet ist.As the sectional views of FIG. 5 to 10 show, takes the distance of the housing bottom 46 of the crankcase bottom 46 against the rear end of the crankcase lower part 40th to, being replaced by a step-like heel in the area about of the last third, a deeper area is created, the actual oil sump of the crankcase bottom 45 and housing bottom 46 lying oil collecting space forms and from which a suction channel 88 along the lower portion of the Supporting beam 43 to a window in the inner wall of the support beam 43 performs, with mounted oil pump 20 in Überdekkung to the suction window 61 of the pressure pump 22 is located. Here are the suction windows 60 of the suction pump 21 and 61 of the Pressure pump 22 corresponding suction openings in the inner wall of the support beam 43 axially in alignment with each other, but are different from each other separated and from each other in the opposite direction Channels fed, with corresponding seals on the circumference of the oil pump 20, for in Fig. 11 only corresponding Engraving grooves 52 provided on the outer circumference of the oil pump 20 are, with simple means a perfect separation is guaranteed.

In den Tragbalken 43 eingesetzt endet die Druckpumpe 22 mit Abstand zur Aufnahme 89 für das Ölfilter, die als radiale Einstecköffnung (Fig. 9) in den Tragbalken 43 hineinragt und in die ein herkömmlicher Ölfilter oder eine Ölfilterpatrone einschraubbar ist.Used in the support beam 43, the pressure pump 22 ends with Distance to the receptacle 89 for the oil filter, as radial Insertion opening (Fig. 9) protrudes into the support beam 43 and in the a conventional oil filter or an oil filter cartridge can be screwed.

Die Druckseite der Öldruckpumpe 22 läuft, wie in den Fig. 6 und 7 ersichtlich, auf einen innerhalb des Trabbalkens 43 vorgesehenen Axialkanal 90 aus, der auf den Aufnahmeraum 89 für den Ölfilter ausmündet und der mit einem Axialanschluss 91 (Fig. 11) der Druckpumpe 22 korrespondiert, so dass bei in den Tragbalken 43 eingesetzter Druckpumpe eine Verbindung derselben zum Ölfilter hergestellt ist.The pressure side of the oil pressure pump 22 runs as shown in FIG. 6 7, to one within the trolley beam 43 provided axial channel 90, which is on the receiving space 89th for the oil filter and opens with an axial connection 91 (FIG. 11) corresponds to the pressure pump 22, so that at the support beam 43 inserted pressure pump a connection the same is made to the oil filter.

Der zwischen Ölfilter und diesem benachbarten Ende der Ölpumpe 20 liegende, über den Kanal 90 überbrückte Raum, der in Fig. 7 mit 92 bezeichnet ist, ist gegen den zwischen Kurbelgehäuseboden 45 und Gehäuseboden 46 liegenden Raum, dem auch der Ölsumpf 66 zugehört, offen, so dass auf diesen Bereich evtl. in der Verbindung zwischen Pumpe und Filter liegende Überdruckventile ausmünden können.The between oil filter and this adjacent end of the oil pump 20 lying over the channel 90 bridged space in Fig. 7 is designated 92, is against the between crankcase bottom 45 and caseback 46 lying space, which also the sump 66 listened to, open, leaving on that area possibly in the connection between pump and filter Overpressure valves can open.

Hat das auf den Aufnahmeraum über den Kanal 90 geförderte Drucköl den Filter durchlaufen, so strömt es über den Ansatz 93, in den der Ablauf des Filters eingreift, in den Kanal 94, der als Axialkanal auf einen Querkanal ausmündet, der der rückwärtigen Stirnwand des Kurbelgehäuseunterteiles 40 zugeordnet ist und von dem aus, wie anhand Fig. 2 geschildert, die Ölversorgung für die Kurbelwellenlager sowie auch für die weiteren Ölverbraucher abgezweigt ist. Has that promoted to the receiving space via the channel 90 Pressure oil through the filter, so it flows over the approach 93, in which the flow of the filter engages, into the channel 94, which opens out as an axial channel on a transverse channel, the assigned to the rear end wall of the crankcase lower part 40 is and from which, as described with reference to FIG. 2, the oil supply for the crankshaft bearings as well as for the branched off further oil consumers.

Bei der erfindungsgemäßen Gestaltung einer Hubkolbenbrennkraftmaschine ergibt sich insbesondere für leistungsstarke, kleinvolumige Brennkraftmaschinen eine hohe Steifigkeit des Kurbelgehäuseunterteiles, und damit eine Basis für eine besonders belastbare Konstruktion des Motorblockes, die zudem zu einer sehr raumsparenden Bauweise führt, die eine Integration aller wesentlichen Teile des Ölkreislaufes in den Motorblock ermöglicht und zusätzliche Ölleitungen vermeidbar macht.In the inventive design of a reciprocating internal combustion engine especially for powerful, small volume internal combustion engines high rigidity of Crankcase lower part, and thus a basis for a particularly robust construction of the engine block, in addition leads to a very space-saving design that integrates all essential parts of the oil circuit in the engine block allows and additional oil pipes avoidable power.

Die erfindungsgemäße Hubkolbenmaschine eignet sich insbesondere auch für Einbaulagen mit zur Vertikalen geneigter Zylinderachse. Ausgangspunkt für das Ausführungsbeispiel ist eine Einbaulage, bei der der die Ölpumpe aufnehmende Tragbalken 43 gegenüber einer horizontalen Bezugsebene tiefer liegt als Tragbalken 44, da so die Fangschlitze 65 nahezu im Tiefstpunkt der Kurbelwanne 67 liegen.The reciprocating piston engine according to the invention is particularly suitable also for mounting positions with inclined to the vertical cylinder axis. Starting point for the embodiment is a Installation position, in which the support member receiving the oil pump 43rd is lower than a horizontal reference plane Support beam 44, as so the catch slots 65 almost at its lowest point the crankcase 67 are located.

Claims (48)

  1. Piston-type internal combustion engine, in particular multi-cylinder combustion engine, comprising a crankshaft and a crankcase supporting the crankshaft with bearing blocks (2, 41) lying at right angles to the crankshaft, assigned to a bottom half (1, 40) of the crankcase and connected by lateral tubular supporting beams (4, 5; 43, 44) extending in the longitudinal direction of the crankshaft,
    characterised in that
    the bottom half (1, 40) of the crankcase is represented by a crankcase pan (67), which features a crankcase pan base (45) linking the bearing blocks (2; 41) and is laterally bounded by the tubular supporting beams (4, 5; 43, 44).
  2. Piston-type internal combustion engine according to claim 1,
    characterised in that
    the crankcase pan base (45) is located at a distance above a housing base (46) adjoining the supporting beams (43, 44).
  3. Piston-type internal combustion engine according to claim 2,
    characterised in that
    the housing base (46) and the crankcase pan base (45) are supported against one another in the region of the bearing blocks (41).
  4. Piston-type internal combustion engine according to claim 3,
    characterised in that
    the housing base (46) and the crankcase pan base (45) are connected to one another in the region of the bearing blocks (41).
  5. Piston-type internal combustion engine according to claim 3 or 4,
    characterised in that
    the bearing blocks (41) are designed to merge into the housing base (46).
  6. Piston-type internal combustion engine according to claim 5,
    characterised in that
    the bearing blocks (41) are provided with through-holes (47) for tie rods in the region of the sections merging into the housing base (46).
  7. Piston-type internal combustion engine according to claim 6,
    characterised in that
    the through-holes (47) for the tie rods terminate in shaft-like recesses (48) extending from the outside of the housing base (46) towards the crankcase pan base (45).
  8. Piston-type internal combustion engine according to any of the preceding claims,
    characterised in that
    the bottom half (40) of the crankcase is braced against a top half of the crankcase by means of tie rods.
  9. Piston-type internal combustion engine according to any of the preceding claims,
    characterised in that
    the tie rods are assigned to a cylinder head covering the top half of the crankcase and extend from the cylinder head towards the bottom half (40) of the crankcase.
  10. Piston-type internal combustion engine according to claim 9,
    characterised in that
    the tie rods are anchored in the cylinder head.
  11. Piston-type internal combustion engine according to claim 9 or 10.
    Characterised in that
    the cylinder head features threaded holes for the tie rods.
  12. Piston-type internal combustion engine according to any of claims 6 to 10,
    characterised in that
    the tie rods can be tightened by means of nuts located in the shaft-like recesses (49).
  13. Piston-type internal combustion engine according to any of the preceding claims,
    characterised in that
    at least one of the lateral tubular supporting beams (42, 43) forms a location for assemblies.
  14. Piston-type internal combustion engine according to claim 13,
    characterised in that
    the assemblies are designed as plug-in assemblies.
  15. Piston-type internal combustion engine according to claim 13 or 14,
    characterised in that
    the assembly located in the one supporting beam (43) is an oil pump (20).
  16. Piston-type internal combustion engine according to claim 15,
    characterised in that
    the oil pump (20) comprises a suction pump (21) and a pressure pump (22).
  17. Piston-type internal combustion engine according to either of claims 13 or 14,
    characterised in that
    the assembly located in the one supporting beam (44) is an oil cooler.
  18. Piston-type internal combustion engine according to claim 13 or 14,
    characterised in that
    the assembly located in the one supporting beam (44) is an oil/air separator (49).
  19. Piston-type internal combustion engine according to claim 17 or 18,
    characterised in that
    the assembly located in the one supporting beam (44) is an oil/air separator (49) with integrated cooling function.
  20. Piston-type internal combustion engine according to any of claims 16 to 19,
    characterised in that
    the suction pump (21) and the pressure pump (22) of the oil pump are gear pumps, and in that the driven and the non-driven gears of the two pumps are located coaxially behind one another.
  21. Piston-type internal combustion engine according to claim 20,
    characterised in that
    the driven gears (53, 54) of the two pumps (21, 22) are located on a shaft (55).
  22. Piston-type internal combustion engine according to claim 20,
    characterised in that
    the non-driven gears (56, 57) of the two pumps (21, 22) are located on an axis (58).
  23. Piston-type internal combustion engine according to any of claims 18 to 22,
    characterised in that
    the oil/air separator (49) is designed as a cartridge, the shell (70) of which is externally provided with conducting means (81) for the oil flowing over the cartridge and with radial openings for the penetration of the air separated from the oil into the interior of the cartridge.
  24. Piston-type internal combustion engine according to claim 23,
    characterised in that
    the conducting means (81) run spirally along the cartridge.
  25. Piston-type internal combustion engine according to claim 23 or 24,
    characterised in that
    the radial openings are represented by at least one longitudinal slot (80).
  26. Piston-type internal combustion engine according to claim 25,
    characterised in that
    the radial openings are represented by two longitudinal slots (80) lying opposite one another.
  27. Piston-type internal combustion engine according to any of claims 23 to 26,
    characterised in that
    the oil/air separator (49) is combined with an oil cooler and has in inner shell (71) bounding an annular coolant chamber (72) together with the outer shell (70).
  28. Piston-type internal combustion engine according to any of claims 23 to 27,
    characterised in that
    the oil flow to the cartridge is transverse to the longitudinal direction, in particular at an angle to the longitudinal direction and tangential to the cartridge.
  29. Piston-type internal combustion engine according to claim 27 or 28,
    characterised in that
    the annular coolant chamber (72) is at one end (74) provided with an axial and at the other end with a radial connection to the cooling circuit of the internal combustion engine, in particular to the water circuit.
  30. Piston-type internal combustion engine according to any of claims 18 to 29,
    characterised in that
    one of the supporting beams (43, 44) houses the oil/air separator (49) while the other houses the oil pump (20), and in that at least a part of the crankcase pan space (67) between the housing base (46) and the crankcase pan base (45) serves as an oil sump (66).
  31. Piston-type internal combustion engine according to claim 30,
    characterised in that
    the crankcase pan space (67) is open towards a header duct (64) connected to the inlet side of the suction oil pump (21).
  32. Piston-type internal combustion engine according to claim 31,
    characterised in that
    the openings of the crankcase pan space (67) leading to the header duct (64) are located in the region where the crankcase pan base (65) is joined to the supporting beam (43).
  33. Piston-type internal combustion engine according to claim 31 or 32,
    characterised in that
    the header duct (64) is designed to lie below the crankcase pan base (45) and to adjoin the one supporting beam (43), and in that the openings leading to the header duct (64) are represented by slots (65) extending along the one supporting beam (43) and between the bearing blocks (41).
  34. Piston-type internal combustion engine according to any of claims 31 to 33,
    characterised in that
    the header duct (64) is adjacent to the supporting beam housing the oil pumps (21, 22).
  35. Piston-type internal combustion engine according to any of claims 16 to 34,
    characterised in that
    the suction pump (21) of the oil pumps (21, 22) is located at one end of the supporting beam (43) housing it, and in that the opposite end of said supporting beam (43) has a recess (89) for an oil filter.
  36. Piston-type internal combustion engine according to claim 35,
    characterised in that
    the oil filter is installed in the one supporting beam (43) in radial orientation.
  37. Piston-type internal combustion engine according to any of claims 16 to 36,
    characterised in that
    the pressure oil pump (22) is located between the suction oil pump (21) and the oil filter in the one supporting beam (43).
  38. Piston-type internal combustion engine according to any of claims 16 to 37,
    characterised in that
    the inlet-side supply ports of the suction oil pump (21) and the pressure oil pump (22) are radially located on that inner wall of one the supporting beam (43) which is remote from the crankcase pan base (45).
  39. Piston-type internal combustion engine according to any of claims 16 to 38,
    characterised in that
    the outlet side of the pressure oil pump (22) is connected to the oil filter via a duct (90) extending axially in the direction of the one supporting beam (43).
  40. Piston-type internal combustion engine according to any of claims 18 to 39,
    characterised in that
    the outlet side of the suction pump (21) is connected to the inflow side of the oil/air separator (49), and in that the suction oil pump (21) and the inflow side of the oil/air separator (49) are adjacent to the same end face of the bottom half (1) of the crankcase.
  41. Piston-type internal combustion engine according to any of claims 18 to 40,
    characterised in that,
    with reference to the installed position of the internal combustion engine, the supporting beam (43) housing the oil pump lies at a lower level than the supporting beam (44) housing the oil/air separator (49).
  42. Piston-type internal combustion engine according to any of claims 7 to 41,
    characterised in that
    the bearing blocks (41) are provided with exhaust air ducts (87), and in that the exhaust air ducts (87) lie in the same lateral plane as the bores of the tie rods.
  43. Piston-type internal combustion engine according to claim 42,
    characterised in that
    the exhaust air ducts provided in the bearing blocks (41) are connected to the space between the housing base and the crankcase pan base for the bearing blocks adjacent to the one supporting beam.
  44. Piston-type internal combustion engine according to either of claims 42 or 32,
    characterised in that
    the exhaust air ducts in the bearing blocks adjacent to a supporting beam terminate at the header duct (64).
  45. Piston-type internal combustion engine according to any of the preceding claims,
    characterised in that
    the supporting beams (43, 44) lie at different levels in the installed position of the internal combustion engine.
  46. Piston-type internal combustion engine according to any of claims 16 to 45,
    characterised in that
    the supporting beam (43) housing the oil pump (20) lies at a lower level than the other supporting beam (44) in the installed position of the internal combustion engine.
  47. Piston-type internal combustion engine according to any of claims 16 to 45,
    characterised in that
    the supporting beam (43) housing the suction oil pump (21) lies at a lower level than the other supporting beam (44).
  48. Piston-type internal combustion engine according to any of claims 45 to 47,
    characterised in that
    the supporting beam (43) adjacent to the openings terminating at the header duct (64) lies at a lower level than the other supporting beam (44).
EP98121886A 1997-12-05 1998-11-18 Internal combustion multi-cylinder piston engine Revoked EP0921297B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19754007A DE19754007C1 (en) 1997-12-05 1997-12-05 Crankcase for multiple cylinder internal combustion engine
DE19754007 1997-12-05

Publications (3)

Publication Number Publication Date
EP0921297A2 EP0921297A2 (en) 1999-06-09
EP0921297A3 EP0921297A3 (en) 2000-06-21
EP0921297B1 true EP0921297B1 (en) 2004-01-07

Family

ID=7850864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121886A Revoked EP0921297B1 (en) 1997-12-05 1998-11-18 Internal combustion multi-cylinder piston engine

Country Status (2)

Country Link
EP (1) EP0921297B1 (en)
DE (2) DE19754007C1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10014368B4 (en) * 2000-03-23 2004-05-19 Dr.Ing.H.C. F. Porsche Ag Oil collecting device for an internal combustion engine
DE10029844B4 (en) * 2000-06-16 2004-04-15 Dr.Ing.H.C. F. Porsche Ag Internal combustion engine, in particular for motorcycles
DE10119924B4 (en) * 2001-04-23 2014-03-20 Volkswagen Ag Internal combustion engine with pressure circulation lubrication
KR100412841B1 (en) * 2001-07-23 2003-12-31 현대자동차주식회사 a ladder frame of engine
DE10139045B4 (en) * 2001-08-08 2014-06-18 Bayerische Motoren Werke Aktiengesellschaft Crankcase for an internal combustion engine, in particular with mutually inclined cylinder rows, especially V-engine
DE10316340A1 (en) * 2003-04-10 2004-10-28 Daimlerchrysler Ag Lubricating circuit in internal combustion engine has piston cooling device in flow communication with second oil line or with third oil line directly connected to main oil line
DE102004001401A1 (en) * 2004-01-09 2005-08-04 Fev Motorentechnik Gmbh Ladder type frame for internal-combustion engine, has oil pump designed as trochoidal pump and including housing that is formed from frame walls, where axis of housing coincides with longitudinal direction of frame to form crank case base
DE102005001863A1 (en) * 2005-01-14 2006-07-20 Dr.Ing.H.C. F. Porsche Ag Multicylinder internal combustion engine has crank case upper part and crank case lower part in which bearing blocks are formed for seating crankshaft whereby individual oil suction chambers are formed in crank case lower part
DE102005030850B4 (en) * 2005-07-01 2008-05-29 Mtu Friedrichshafen Gmbh Crankcase with bottom plate
DE102006024055A1 (en) * 2006-05-23 2007-11-29 Volkswagen Ag Module for pressure circulation lubrication of an internal combustion engine
WO2009011969A1 (en) 2007-07-13 2009-01-22 Cameron International Corporation Integrated rotary valve
DE102008022444A1 (en) * 2008-04-30 2009-11-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Internal-combustion engine for vehicle, has return line for returning lubricating oil, and air oil separator positioned horizontally i.e. parallel to vehicle longitudinal axis, at inner side of oil collector
DE102008028474A1 (en) * 2008-06-14 2009-12-17 Bayerische Motoren Werke Aktiengesellschaft Device for cooling or lubricating piston-internal combustion engine, has lubricant pump for supplying lubricant in lubricant line in crank case of internal-combustion engine
JP5331588B2 (en) * 2009-06-19 2013-10-30 本田技研工業株式会社 Crankcase for internal combustion engine
FR3035451A1 (en) * 2015-04-24 2016-10-28 Peugeot Citroen Automobiles Sa CASTER OF BEARING CAPS WITH INTEGRATED COMPARTMENT
CN108105059B (en) * 2018-01-03 2023-10-24 台州市华力机械有限公司 Plunger connecting pump
FR3087496B1 (en) * 2018-10-22 2021-01-29 Renault Sas LOW OVERALL VEHICLE MOTORIZATION SYSTEM

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1294766A (en) * 1970-07-03 1972-11-01 Birmid Qualcast Foundries Ltd Internal combustion engine
US4245595A (en) * 1977-09-13 1981-01-20 Nissan Motor Company, Limited Internal combustion engine for motor vehicles
JPS5950864B2 (en) * 1977-11-26 1984-12-11 日産自動車株式会社 automotive engine
JPS6320847Y2 (en) * 1980-04-21 1988-06-09
JPS5853826U (en) * 1981-10-07 1983-04-12 日産自動車株式会社 Automotive engine main bearing device
DE29609950U1 (en) * 1996-06-05 1997-10-02 Bruehl Eisenwerk Engine block for a multi-cylinder internal combustion engine

Also Published As

Publication number Publication date
EP0921297A2 (en) 1999-06-09
DE19754007C1 (en) 1999-05-20
DE59810543D1 (en) 2004-02-12
EP0921297A3 (en) 2000-06-21

Similar Documents

Publication Publication Date Title
EP0921297B1 (en) Internal combustion multi-cylinder piston engine
DE102004048939B4 (en) Connecting rod with lubricant pipe
DE3010635C2 (en)
DE60125485T2 (en) Engine block structure for an internal combustion engine
DE4001468C2 (en)
DE19681509B4 (en) Internal combustion engine
DE10112132A1 (en) Cylinder crankcase for a liquid-cooled internal combustion engine
DE102005051263A1 (en) Oil tank arrangement with dry sump
DE3801715A1 (en) VEHICLE ENGINE ARRANGEMENT
DE102014115517A1 (en) Fluid guiding device and motor vehicle transmission
DE3923986C1 (en)
EP0944784B1 (en) Supporting structure for the crankcase of a reciprocating piston internal combustion engine
AT404164B (en) CYLINDER CRANKCASE OF AN INTERNAL COMBUSTION ENGINE WITH WATER COOLING
EP2828527B1 (en) Refrigerant compressor
EP0838577B1 (en) Oilfeeder system for combustion engine
DE10306571B4 (en) Engine with an oil pan with vertical partitions
DE102016012764A1 (en) ENGINE LUBRICATION AND MOTORCYCLE
DE19754009A1 (en) Water-cooled reciprocating piston internal combustion engine with at least one cylinder bank
DE19947271C2 (en) Multi-cylinder internal combustion engine with at least one first balance shaft
DE102004021723A1 (en) Oil pan assembly for a machine and / or a transmission
DE102009025453B4 (en) Balance shaft module
DE10140876B4 (en) Oil pump assembly in a motor
EP1664513A1 (en) Device for guiding media in a cylinder block and crankcase
DE102007026140A1 (en) Four stroke reciprocating engine e.g. diesel engine, has head fixedly connected with cylindrical body to form modular unit, which freely shifts to axle of housing, and distribution devices accommodated in inside of cylindrical holes of head
EP1316712B1 (en) Combustion engine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7F 02F 7/00 A, 7F 01M 1/02 B, 7F 01M 1/12 B

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20000518

AKX Designation fees paid

Free format text: DE FR GB IT

17Q First examination report despatched

Effective date: 20030109

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59810543

Country of ref document: DE

Date of ref document: 20040212

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040218

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: DR. ING. H.C.F. PORSCHE AG

Effective date: 20040707

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20041105

Year of fee payment: 7

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20041112

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20041117

Year of fee payment: 7

RDAF Communication despatched that patent is revoked

Free format text: ORIGINAL CODE: EPIDOSNREV1

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 20050907

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state

Free format text: 20050907