DE20321752U1 - Poured component for an internal combustion engine - Google Patents

Abstract

The cast cylinder-crankcase (1) for a motor vehicle internal combustion engine has a separate fluid guide duct (5,5d) cast into it. The duct can be to supply oil to a crankcase or camshaft bearing. There can be multiple fluid feed ducts forming a branched fluid feed channel. The ducts can have curved sections. There can be a separate feed duct to the cylinder head.

Description

The Invention relates to a cast component for an internal combustion engine, wherein the component is a cylinder crankcase acts, which has at least one guide channel, the formed in the form of a tube and during the casting of the component is poured in and a fluid medium to a demand site forwards.

Internal combustion engines are integral parts of vehicles in the form of internal combustion engines (eg, cars and commercial vehicles, ships, etc.) and also come as stationary motors are used. This included internal combustion engines numerous molded components that have at least one guide channel (also called supply line), which is a fluid medium (eg oil, water, gas or other liquid or gaseous media) to a demand point in the engine or in adjacent areas. Some of the guide channels can even serve the cooling of a component. required locations are the places where the respective medium is needed, z. B. bearings to be lubricated, areas to be cooled, etc.

One Guide channel or several guide channels comes / come in particular in a cylinder crankcase or neighboring attachments. guide channels be in a known manner by machining on machine tools or transfer lines, d. H. drilled. To do this in several elaborate, high-precision executable Steps central main channels and secondary ducts, the junctions to the make individual needles, drilled into the component. Subsequently need numerous, unnecessary accesses be closed permanently and safely. Very long, straight guide channels, like that of the main oil channel in a cylinder crankcase Today, some of them are poured by watering a pipe or by saving by a corresponding casting core.

From the DE 199 61 092 A1 It is known to pour in a cast cylinder block or cylinder head of an internal combustion engine during manufacture as pipes preformed cooling channels with a small diameter. These lead around components such as spark plugs or fuel injection nozzles and form a cooling system for the liquid cooling of the internal combustion engine. The DE 33 00 924 C2 teaches for water cooling of webs between closely and directly cast cylinders of a cylinder block of a water-cooled internal combustion engine in the web forming casting material pour tubes, which establish a connection between the lateral cooling water jackets of the cylinder block. This results in intensive cooling of the highly stressed web areas.

Of the Invention is the object of a component - and though a cylinder crankcase - the above Type of manufacturing and cost to reduce.

These Task is in a cast component of the above type according to the invention by the features of the claim 1, claim 13, claim 20 or claim 28 solved.

According to the invention it is in the cast component to a cylinder crankcase. One Cylinder crankcase has numerous guide channels especially for oil and water, so that the pouring of a guide channel or several guide channels, the or each is designed as a tube / are, a considerable Saving on production costs is achieved. It is not with a cast-in pipe guide channel around the main oil channel, since this is state of the art. The aim of the invention is rather a different guide channel or several other guide channels for oil or to pour other media into places of need as pipe (s). As essential guide channels to need in a cylinder crankcase according to the invention in shape cast-in pipes can be advantageously realized, are z. B. the oil supply to crankshaft or camshaft bearings, the supply line for the piston cooling, the pressure oil line to the cylinder head or oil returns too call.

Further can at least one guide channel as a pipe in the cylinder crankcase be poured, which forms a fuel line.

ever after cast cylinder crankcase, it may be appropriate be, on the component only a single cast as a tube guide channel provided. Advantageously, the component comprises several cast-in guide channels to manufacturing and Save costs. The guide channels can each as a single connecting tube for the medium guide be introduced. Ie. There are several individual when casting, accordingly molded pipes molded as connecting parts with. This offers a high degree of freedom with regard to the course of the Guide channels. Also a combination of guide channels in composite pipe form and individual connecting parts on the same Component is possible and advantageous.

In the cylinder crankcase according to the invention according to claim 1 serve several cast in the cylinder crankcase as tubes guide channels to provide located in the cylinder crankcase bearings for lubrication with oil, So each form an oil supply. Expediently, a guide channel extends in the region of a bulkhead of the cylinder crankcase.

at the cylinder crankcase according to the invention according to claim 20, at least one guide channel as a pipe poured, which is an oil supply for the supply forms the piston cooling or lubrication of the cylinder wall. For the saving of work, it is advantageous if several pistons or cylinders from a common oil supply be supplied from. For the oil supply can appropriately designed and arranged such that they in the longitudinal extent of the cylinder crankcase runs and branch off from it several spray nozzles, the oil is directed in each case into a cylinder space under one Spraying the piston crown, whereby on the one hand the piston bottom cooled and on the other hand, the relevant cylinder wall is lubricated. Of course, also several oil supply lines to a cylinder or to several cylinders with possibly different courses be poured.

at the cylinder crankcase according to the invention according to claim 13, at least one guide channel as a pipe poured, which is an oil supply for the oil supply forms of the cylinder head and the cylinder heads. The oil supply is fed directly from the main oil channel.

at the cylinder crankcase according to the invention according to claim 28, at least one guide channel as a pipe poured in, which is a fuel line for the supply forms a fuel pump. The fuel line runs advantageously in the longitudinal extent of the cylinder crankcase in the area of a housing outer wall. In an advantageous Further, several fuel pipes are cast as pipes, z. B. at least one supply line and at least one return line.

The Pouring a prefabricated tube as a guide channel has opposite the mechanical introduction by drilling the advantage that the guide channel is not straight (as in drilling) to run, but to the required contour course adapted to the component with the respective desired bends can be. In contrast, when straightforward Drilling a guide channel according to the Prior art inevitably made processing paths which are not useful for supplying the need. Furthermore, a bore has an access to the outside, which must subsequently be closed again, which can lead to leakage problems. Such disadvantages and problems occur in one in the form of a correspondingly prefabricated or molded pipe cast guide channel not on.

One Another advantage of the invention is that a cast Pipe guide channel or several cast-in pipe guide channels a maximum of cleanliness on the inner channel wall offers / offer and the cavity in contrast to the prior art free from residues due to a mechanical Inserting the channel or free of pouring residues (eg nuclear debris) as a result of pouring of the channel in the component as a cavity by inserting a core is.

This Aspect is with a guide channel for bearing lubrication especially important, because in the channel possibly remaining residues get into the bearing with the oil during engine operation and would lead to the destruction of the camp.

About that In addition, unlike a drilled guide channel, in which only circular cross-sections can be realized, it is possible the channel with almost any desired cross-sectional shape and thereby optimize the course and the supply. Furthermore, by suitable choice of the cross-sectional shape and the strength the component wall, in which the guide channel is cast, be reduced, resulting in a weight reduction of the component.

Of course It is possible, on the same component one or more According to the invention cast as a tube guide channels and one or more guide channels introduced by conventional means provided.

In an advantageous embodiment of the invention is provided in that the at least one guide channel cast in as a tube is arranged so that it partially or completely in parts exposed, d. H. he can outside the Bauteilwandung run on the outside or inside. Locally In contrast, the guide channel can be looped with casting material be casted around the component in order for the solid composite of Channel and component to worry. The guide channel can (related on its longitudinal extent) completely exposed run or partially cast with in the component wall be. The measure of the partially exposed course offers over the prior art in which the drilled or with core cast guide channels only in the wall of the component can run, the advantage that the wall thickness of the component significantly reduced and thereby can be saved on material and weight.

According to an advantageous embodiment of the invention, the at least one cast-guide channel in its course Ver different cross-sectional shapes. This will be a good match to the particular design of the component reached. For example, narrow contour areas can be overcome. The respective cross-sectional shapes to be realized depend on the particular construction of the component. Different cross-sectional shapes on a pipe can be before pouring z. B. realize by hydroforming of the tube.

According to one advantageous embodiment of the invention is the component made of a metallic material or plastic. As well can advantageously at least one cast guide channel be made of a metallic material or plastic. As metallic materials come z. As steel, all Cast iron materials, light metals, non-ferrous metals in question. Which material is to be preferably used in particular depends u. a. also from the respective component to be cast.

Of course can be designed according to the invention and arranged cast-in tubes as guide channels also in an attachment of a cylinder crankcase - in particular in a cylinder head, a transmission housing, a wheel housing, an oil pan or the like - realized be. It can guide channels in the cylinder crankcase or in the attachment (s) of a common or several Supply circuits are supplied.

One Method for producing a cast component for an internal combustion engine, wherein the component is a cylinder crankcase acts, which has at least one guide channel, the involves a fluid medium to a demand site, that for the formation of the at least one guide channel a pipe with the desired course in one for pouring required mold installed or in a casting core introduced or in a lost model or in its molding medium cavity filling is incorporated and then the component with the each casting method to be used is poured.

The Pipe can also be incorporated in several casting cores, which can be mounted as individual cores to form a core block.

By This casting concept makes it possible to have a cylinder crankcase with at least one cast-in pipe guide channel, but also other components such as attachments for the cylinder crankcase (eg cylinder head, gearbox housing, wheel housing, oil sump etc.) are advantageous to realize. Depending on whether the at least a guide channel completely into the component wall poured or wholly or partially exposed, is the einzugießende pipe in the mold (possibly by means of Supports) installed or introduced into the casting core (eg injected into a sand core or during core production with incorporated) or incorporated into a lost model or embedded directly in its loose mold medium cavity filling, or the tube is stored at a tube end in the casting core. When introducing a pipe in the casting core are certain To uncover areas again to form a solid cast connection to produce with the component. After pouring with each Casting method to be used becomes the cast blank removed from the mold, removed cores or loose molding medium, and There are the usual post-processing measures.

One According to the invention, cast component can with different casting methods are manufactured. According to one Ers th advantageous method variant, the component is in a Poured casting method with lost shape, z. In one pure core mold process, a core mold i. V. m. Green molding method, Core shape i. V. m. Cold resin molding process, etc. After a second advantageous variant of the method, the component in a casting process Cast permanent mold, z. B. mold casting, die casting, Injection molding, etc. In a third preferred variant cast the component using the lost foam method. Advantages of Lost Foam Casting process (a form of full-cast casting) are, for example, the absence of nuclear debris on the cast component, the high surface quality, high-quality contour sharpness and great imaging accuracy and thus a relatively low reworking effort.

If the component several cast guide channels should have the required Tubes are preferably introduced as individual connecting pipes. Furthermore, it may be advantageous in some variants, several tubes each to connect to a sub-pipe system and several sub-pipe systems pour into the component. Which variant to prefer depends on the specific task.

In The drawings are embodiments of the invention Cylinder crankcases shown schematically. Show it:

1 a partial cross-section of a cylinder crankcase according to the prior art,

2 a partial longitudinal section to 1 (State of the art),

3 1 a partial cross section of a cylinder crankcase according to a first embodiment of a first cylinder crankcase type according to the invention,

4 a longitudinal section to 3 entspre YY,

5 a partial cross-section of a cylinder crankcase,

6 a longitudinal section to 5 according to XX,

7 a single connecting tube as einzugießender guide channel for a cylinder crankcase,

8th a einzugießendes pipe system for a cylinder crankcase,

9 1 is a fragmentary cross-sectional view of a cylinder crankcase according to a second embodiment of the first cylinder crankcase type according to the invention;

10 a second cylinder crankcase type according to the invention in a schematic view from below,

11 a third type of cylinder crankcase according to the invention in a sectional cross-section,

12a a fourth cylinder crankcase type according to the invention in a fragmentary cross section,

12b a partial longitudinal section corresponding to AA 12a and

13 a further inventive cylinder crankcase in a fragmentary cross-section.

In the in 1 partially shown cast component, here a cylinder crankcase 1 , According to the prior art are a crankshaft bearing 2 and a camshaft bearing 3 as well as a main oil channel 4 (a main guide channel) shown in cross section. Furthermore, longitudinally-slotted guide channels 5a . 5b to recognize that of the main oil channel 4 to the crankshaft bearing 2 or camshaft bearing 3 and lubricate camshaft and crankshaft bearings during engine operation. The of the camshaft bearing 3 outgoing guide channel 5c leads to an attachment of the cylinder crankcase 1 , and here to a cylinder head, not shown. The shown guide channels 5a . 5b . 5c are subsequently in the cast cylinder crankcase 1 introduced, ie drilled. Therefore, only a straight course of the guide channels 5 possible, and the housing 1 indicates production-related accesses 6 outwards (to the left), which are to be closed later.

In 2 is the main oil channel 4 out 1 cut longitudinally, and there are several thereof branching guide channels 5b to camp 3 for the camshaft, to recognize. Furthermore, there are recesses 22 in the contour area of the cylinder crankcase 1 shown. Corresponding recesses 22 are also in the 4 and 6 to recognize.

3 shows an inventive, cast component for an internal combustion engine, the at least one guide channel 5 which conveys a fluid medium to a demand site. And it is a cylinder crankcase 1 , The cutting position corresponds to the off 1 ,

To recognize is a guide channel 5d formed in the form of a pipe and while casting the cylinder crankcase 1 has been poured with. This as a guide channel 5d cast-in single connecting pipe 7 is designed here "suitcase handle" bent. - Of course, a guide channel 5d also have a different shape or a different course than shown. - From a bend 8th out, there is a section 7a to a crankshaft bearing 2 and another section 7b to a camshaft bearing 3 , The bend 8th is located at the point where the main oil channel 4 , which is introduced in this embodiment in a conventional manner by drilling subsequently, will run. When introducing the main oil channel 4 by drilling the cast-in connecting pipe 7 pierces and thereby the connection of the guide channel 5d to the main oil channel 4 produced. When the engine is running, oil comes from the main oil passage 4 over the sections 7a . 7b of the guide channel 5d or connecting pipe 7 to the respective crankshaft bearing 2 or camshaft bearing 3 , The in the camshaft bearing 3 and the crankshaft bearing 2 reaching in ends of the guide channel 5d are due to casting technology and are removed during post-processing. The guide channel 5c to the cylinder head is introduced by drilling in this embodiment.

In the longitudinal section in 4 It can be seen that in the illustrated first embodiment, a plurality of individual connecting pipes 7 as guide channels 5 are poured for the medium guide, in the bulkheads 23 , The "suitcase handle-like" connecting pipes shown here 7 open at one end in a camshaft bearing 3 and (interrupted by the drilled main oil channel 4 ) with the other end in a crankshaft bearing 2 ,

Of course, it is also possible, instead of a curved connecting pipe z. B. pour two separate tubes, one of which in a crankshaft bearing and the other in a Nockenwel opens. Furthermore, it is also possible only one or more. Oil supply to the camshaft bearings via a tube guide channel or several tube guide channels and the crankshaft bearings to be supplied by mechanically introduced channels in the conventional way. Accordingly, one or more crankshaft bearings can be supplied with oil via a tube guide channel or a plurality of tube guide channels, and the camshaft bearings can be supplied by mechanically introduced channels in the conventional way.

In the in the 5 and 6 illustrated crankcase 1 are the main oil channel 4 as well as the guide channels 5 to the camshaft bearings 3 and crankshaft bearings 2 formed as a cast-in tubes, and this is by a branched, cast-pipe system 9 realized. These are pipes with the appropriate dimensions (length, diameter, cross-sectional shape, etc.) before casting into a pipe system 9 which has subsequently been cast in a suitable casting process.

In the 3 to 6 it can not be seen that the cast-in as tubes guide channels 5 not completely surrounded by casting material, ie run in the component, must, but can also be exposed in parts. Furthermore, the guide channels 5 also have a curved, adapted to the contour course course.

7 shows a connecting pipe 7 for a "handle-like" guide channel 5d in different views. The core supports to be recognized 10 serve the lateral support during the casting process. However, it is also possible without core supports 10 to get along, for example, if the ends of the connecting pipe 7 be sufficiently firmly anchored in casting cores.

8th shows an example of a pipe system 9 , From a main guide channel 9a branches several secondary channels 9b which lead to the individual needs and provide them with the appropriate medium.

At the in 9 illustrated second embodiment of a cylinder crankcase 1 are - according to the first embodiment of the 3 and 4 - Several individual, "suitcase handle" connecting pipes 7 as guide channels 5d cast during casting of the housing. About the sections 7a . 7b are doing the crankshaft bearings 2 and the camshaft bearings 3 from the subsequently introduced by drilling main oil channel 4 that the connecting pipes 7 each cuts, supplied with lubricant. In contrast to the first embodiment, here are the guide channels 5c to the cylinder heads not later in the cylinder crankcase 1 drilled, but also realized in the form of casting the housing with cast-in tubes, which advantageously an additional post-processing step is saved on the casting. A connecting pipe 7 and a pipe for the formation of the guide channel 5c have been connected to each other before casting.

Of course, a guide channel 5c to the cylinder head also at a different location than shown by a connecting pipe 7 branch. It is also possible that a guide channel 5c not over a connecting pipe 7 supplied with lubricant, but directly from the drilled main oil channel 4 (eg, to train leadership channels 5c to supply the cylinder heads separate, appropriately positioned pipes are poured). Furthermore, the leading to the cylinder heads, designed as a cast-in tubes guide channels 5c Part of a cast-in pipe system (corresponding to that in the 5 and 6 shown example) and either directly from the tubular main oil passage 4 or from secondary channels 9b branch. In addition, a tubular guide channel 5c not from the main oil channel 4 , a connecting pipe 7 , a secondary duct 9b etc., but in the area of a bearing (here, for example, the camshaft bearing 3 , but other bearings are possible) open into a groove of a bearing ring and are supplied from there with lubricant.

10 shows a further inventive cylinder crankcase 1 as a cast component for an internal combustion engine. On the side are oil sump connection surfaces 14 to which an oil pan is attachable. The cylinder crankcase 1 has at least one guide channel 5e on, which forwards a fluid medium to a demand site, formed in the form of a tube and in the casting of the cylinder crankcase 1 is poured in with. In the case of the cylinder crankcase according to the invention shown here 1 forms the cast-in as a guide channel 5e an oil supply 11 for the piston cooling, therefore, conducts oil as a fluid medium to a demand site. The oil supply 11 ends here over a depression 21 on a front side 15 of the cylinder crankcase 1 and is supplied with oil from an oil pump. Of course, could also at another point of the oil circuit within the cylinder crankcase 1 Lubricant in the oil supply line 11 be fed.

In the embodiment shown, several cylinders 12 advantageous from a common oil supply 11 supplied from. This is the cast-pipe guide channel 5e in the longitudinal extent of the cylinder crankcase 1 , so across to the cylinders 12 arranged. He runs here in the area of the crank chambers at the lower cylinder areas at a certain distance from the Zylinderaußenwandungen. It can be seen that the guide channel 5e to the shape of the cylinder 12 is adapted so that there is a "wave-like" curved course. The oil supply 11 is formed in the embodiment substantially exposed. In several places it is locally looped with casting material of the component. These cast brackets 13 cause a solid bond of oil supply 11 and component. The cast holders 13 Here also form the mounting points for the spray nozzles, not shown. The spray nozzles are subsequently mechanically in the oil supply 11 introduced and each formed and arranged so that they inject lubricant directed into a cylinder space below a piston crown. This cools the pistons and lubricates the cylinder walls.

Due to the curved, adapted course of the oil supply 11 for the piston cooling and by their predominantly exposed, only locally surrounded by casting material training a significant weight reduction of the component and saving in mechanical processing effort is achieved compared to the known, linearly drilled in the casting material oil supply lines.

Of course, the oil supply could 11 also have a different course or a different arrangement or be completely encapsulated over the entire length or larger areas. Furthermore, several guide channels could also 5e , the oil supply lines 11 for the piston cooling, be poured. If necessary, the oil supply could 11 also advantageously have different cross-sectional shapes in their course.

11 shows another inventive cylinder crankcase 1 as a cast component for an internal combustion engine, the at least one guide channel 5f having a fluid medium to a demand point passes, formed in the form of a tube and in the casting of the cylinder crankcase 1 is poured in with. In the case of the cylinder crankcase according to the invention shown here 1 forms the cast-in as a guide channel 5f a pressure oil line 16 to a cylinder head.

The cast as a pipe pressure oil line 16 is here directly from a main oil channel 4 supplied with lubricant. By the subsequent drilling of the main oil channel 4 is the connection of the guide channel in the embodiment shown 5f made to the oil circuit. Alternatively, the pressure oil line could 16 also from another area of the oil budget within the cylinder crankcase 1 be fed from, for. B. has been connected before pouring into the cylinder crankcase with another oil-carrying line to a pipe network (see. 9 ) or by opening into a groove of a bearing. Numerous other advantageous variants are possible.

Due to an obstacle 17 - Exemplarily shown in the embodiment shown a threaded hole 18 and another recess 19 - Has the cast-in as a guide channel 5f a contour adapted to the contour course and here "curved" bent. Of course, depending on structural conditions other forms of variation are possible. The pressure oil line 16 is here completely surrounded in the longitudinal extent with casting material. Alternatively, it could, depending on the design conditions, advantageously also be arranged such that it runs partially or completely exposed in parts. Furthermore, it could advantageously have different cross-sectional shapes in their course to z. B. bottlenecks in the cylinder crankcase 1 to overcome.

The in the cylinder crankcase 1 cast-in pressure oil line 16 to the cylinder head ends at a cylinder head surface 20 , The appropriate number of cast as a pipe pressure oil lines 16 for the oil supply to the cylinder head or the cylinder heads via the cylinder crankcase 1 depends on the respective equipment of the engine.

The Realization of the cylinder head oil supply in the form of a cast-in pipe or more cast-in pipes is for the designer very advantageous because he has his oil supply not straight - as in the case of mechanical introduction through Drilling - but bent and thus to the spatial Incorporated circumstances can bring.

The 12a and 12b show yet another inventive cylinder crankcase 1 as a cast component for an internal combustion engine, the at least one guide channel 5g having a fluid medium to a demand point passes, formed in the form of a tube and in the casting of the cylinder crankcase 1 is poured in with. In the case of the cylinder crankcase according to the invention shown here 1 forms the cast-in as a guide channel 5g a fuel line 24 for supplying a fuel pump with fuel as a fluid medium. Through the curved line 25 is in 12a indicated that the representation of the cast-in fuel line 24 in a different cutting plane than the rest of the drawing.

It can be seen that several advantageous guide channels 5g each as a pipe in an outer wall 26 of the cylinder crankcase 1 are cast in, and indeed they run in the longitudinal direction of the cylinder crankcase 1 (see. 12b ). These are the middle fuel line 24 in the example shown around a fuel supply line and the outer fuel lines 24 each to a fuel return line. Of course, other numbers of cast-in lines or other assignments of the lines are possible. Furthermore, in 12a a recess 27 shown in the later a fuel pump is used. As in the partial longitudinal section in 12b It can be seen over the length of the middle fuel line 24 several recesses 27 provided for fuel pumps, wherein the number depends on the number of cylinders of the respective engine.

In the course of finishing operations on the cast component, the recesses are made in the areas of the recesses 27 for the fuel pumps each cut the fuel supply line or cut and thereby the connections between the guide channel 5g and pumps made. Openings in the fuel return lines are later also mechanically introduced. By a fuel pump each fuel is removed from the supply line and pumped through a connection line to an injection nozzle in a cylinder head.

According to the prior art, fuel lines are mechanically introduced into the outer wall of a cylinder crankcase as long, straight holes. The pouring of one or more fuel pipe (s) as a pipe with the manufacturing method according to the invention offers the advantageous possibility that the guide channel, if necessary, can be bent. It may advantageously be exposed predominantly or in sections, may not also have round cross-sectional shapes or have different cross-sectional shapes in its course. This is z. B. a reduction of the component wall thickness possible, resulting in savings in material and weight and reduced manufacturing costs. Furthermore, the course of the lines can be optimized. Because the fuel line (s) 24 In addition, the workload is significantly reduced overall in the finished cast component.

In the in 12a and 12b shown embodiment of a cylinder crankcase according to the invention 1 It can be seen that here only the fuel lines 24 are cast as pipes in the housing. The one in a bulkhead 23 extending guide channels 5a . 5b for the supply of camshaft bearings 3 and crankshaft bearings 2 with oil and a supply channel 5c to the cylinder head are here introduced later mechanically by drilling.

The above-described embodiments according to the invention on the four types of cylinder crankcase according to the invention - namely a) oil supply of crankshaft bearings or camshaft bearing by several cast-in as a guide channels (see. 3 . 4 and 7 ), b) oil supply for the piston cooling by at least one guide channel cast in as a pipe (cf. 10 ), c) oil supply of the cylinder head or the cylinder heads by at least one cast-in as a pipe guide channel (see. 9 . 11 ), d) providing a fuel line through at least one guide channel cast in as a tube (cf. 12 ) - Can be advantageously realized in an appropriate combination of the same cylinder crankcase.

An example of such an advantageous combination shows 13 , There is a cylinder crankcase 1 to recognize the supply of crankshaft bearings 2 and camshaft bearings 3 with lubricant through into the bulkhead walls 23 cast curved guide channels 5d is realized (according to the in the 3 and 4 described embodiment). In addition, here is a cast-in as a guide channel 5c provided, which is a pressure oil line 16 to form a cylinder head. Unlike in the 11 shown embodiment, this is not directly from the main oil passage 4 supplied from oil, but branches from the cast-guide channel 5d from. In addition, cast as pipes guide channels 5g present, the fuel lines 24 (Supply line and return lines) for the supply of a fuel pump form (according to the embodiment of 12 ).

Numerous other combinations are advantageous to realize and are covered by the invention, for. B. a cast-in stock supply via separate connecting pipes 7 i. V. m. a cast-in supply line 11 for the piston cooling; a cast-in supply line 11 for the piston cooling i. V. m. a cast-in fuel line 24 ; a cast-in pressure oil line 16 to the cylinder head i. V. m. a cast-in fuel line 24 etc.

The guide channels illustrated in the exemplary embodiments by way of example for the oil supply and the fuel supply 5 can also be used on guide channels 5 for a different medium.

The invention was in the present case for a cylinder crankcase 1 described, wherein the cylinder crankcase in one piece or multi-part ausgebil It can be det or it can also be a crankcase with attached cylinder housing. Of course, the invention is not limited to a cylinder crankcase 1 limited, but can also on one or more attachment (s) for the cylinder crankcase 1 - In particular on cylinder heads, gearbox housing, wheel housing, oil pans - and other components produced in a casting process are transferred.

1

cylinder crankcase

2

crankshaft bearings

3

camshaft bearings

4

Main oil

5

guide channel (generally)

5a

guide channel

5b

guide channel

5c

guide channel

5d

guide channel

5e

guide channel

5f

guide channel

5g

guide channel

6

Access

7

connecting pipe

7a

Section of 7

7b

Section of 7

8th

bend

9

pipe system

9a

Main duct

9b

In addition to the guide channel

10

core support

11

oil supply for the piston cooling

12

cylinder

13

Gußhalterung

14

Oil pan pad

15

Front side of 1

16

Pressure oil line

17

obstacle

18

threaded hole

19

recess

20

Cylinder head pad

21

depression

22

recess

23

bulkhead

24

Fuel line

25

curved line

26

outer wall

27

recess for fuel pump

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19961092 A1 [0004]
• - DE 3300924 C2 [0004]

Claims (31)

Cast component for an internal combustion engine, wherein the component is a cylinder crankcase ( 1 ), which has at least one guide channel ( 5 . 5d ) which is formed in the form of a tube and is cast during casting of the component and which conveys a fluid medium to a demand site, wherein the fluid medium to oil and the at least one guide channel ( 5 . 5d ) to an oil supply to a crankshaft bearing to be lubricated ( 2 ) and / or camshaft bearings ( 3 ) is a demand site, characterized in that the cylinder crankcase ( 1 ) several cast-in guide channels ( 5 . 5d ), each as a single connecting tube ( 7 ) are introduced for the medium guide, wherein the connecting pipes ( 7 ) are each bent and one bend ( 8th ), from which a section ( 7a ) to a crankshaft bearing ( 2 ) and another section ( 7b ) to a camshaft bearing ( 3 ), whereby the bends ( 8th ) of the cast connection pipes ( 7 ) are in each case at the locations at which a later introduced by drilling main oil channel ( 4 ), so that by the introduction of the main oil channel ( 4 ) the connecting pipes ( 7 ) are pierced and thereby in each case a connection of the connecting pipes ( 7 ) to the main oil channel ( 4 ) is made. Cast component according to claim 1, characterized in that the connecting pipes ( 7 ) adapted to the contour course, advantageously "suitcase handle-like" bent, are formed. Cast component according to claim 1 or 2, characterized in that the cylinder crankcase ( 1 ) at least one guide channel cast in as a tube ( 5c ) for oil leading to a cylinder head. Cast component according to claim 3, characterized in that the at least one guide channel ( 5c ) to the cylinder head from a single connecting tube ( 7 ) branches off. Cast component according to claim 3, characterized in that the at least one guide channel ( 5c ) to the cylinder head is a separately cast pipe, which is supplied with oil directly from a drilled main oil channel. Cast component according to claim 3, characterized in that the at least one guide channel ( 5c ) opens to the cylinder head in the region of a bearing in a groove of a bearing ring and is supplied from there with oil. Cast component according to one of the preceding claims, characterized in that the cylinder crankcase ( 1 ) at least one guide channel cast in as a tube ( 5e ) comprising a supply line ( 11 ) forms for the piston cooling. Cast component according to claim 7, characterized in that the supply line ( 11 ) is formed for the piston cooling substantially exposed and is cast in several places locally ring-like with casting material of the component, so that casting mounts ( 13 ) and that the casting mounts ( 13 ) Are mounting points for spray nozzles which are subsequently mechanically inserted into the supply line ( 11 ) are introduced for the piston cooling and which are each designed and arranged so that they inject lubricant directed into a cylinder space below a piston head. Cast component according to claim 8, characterized in that the supply line ( 11 ) for the piston cooling in the longitudinal extent of the cylinder crankcase ( 1 ) and that several cylinders ( 12 ) from a common supply line ( 11 ) are supplied from oil. Cast component according to one of the preceding claims, characterized in that the cylinder crankcase ( 1 ) at least one guide channel cast in as a tube ( 5g ) comprising a fuel line ( 24 ) forms for the supply of a fuel pump. Cast component according to claim 10, characterized in that the fuel line ( 24 ) in the longitudinal extent of the cylinder crankcase ( 1 ) and that the fuel line ( 24 ) forms a fuel supply line and in the cylinder crankcase ( 1 ) over the length of the fuel supply line a plurality of recesses ( 27 ) are provided for fuel pumps, in the later fuel pumps are used, wherein the fuel supply line by post-processing measures on the cast cylinder crankcase ( 1 ) in each case in the areas of the recesses ( 27 ) is cut or severed, whereby the connections between the guide channel ( 5g ) and fuel pumps are made. Cast component according to Claim 11, characterized in that a fuel pipe cast in as a pipe ( 24 ) forms a fuel return line. Cast component for an internal combustion engine, wherein the component is a cylinder crankcase ( 1 ), which has at least one guide channel ( 5 . 5f ), which is formed in the form of a tube and is molded during casting of the component and which forwards a fluid medium to a demand site, wherein the fluid medium is oil, characterized in that the tube cast as at least one guide channel ( 5f ) a pressure oil line ( 16 ) forms a cylinder head and that one end of the pressure oil line ( 16 ) is arranged in a region in which the subsequently introduced by drilling main oil channel ( 4 ), so that by the subsequent drilling of the main oil channel ( 4 ) the connection of the guide channel ( 5f ) is made to the oil circuit, and the other end of the pressure oil line ( 16 ) on a cylinder head connection surface ( 20 ) ends. Cast component according to claim 13, characterized in that the pressure oil line ( 16 ) a curved, to the contour of the cylinder crankcase ( 1 ) has adapted course. Cast component according to claim 13 or 14, characterized in that the cylinder crankcase ( 1 ) at least one guide channel cast in as a tube ( 5g ) comprising a fuel line ( 24 ) forms for the supply of a fuel pump. Cast component according to claim 15, characterized in that the fuel line ( 24 ) in the longitudinal extent of the cylinder crankcase ( 1 ) and that the fuel line ( 24 ) forms a fuel supply line and in the cylinder crankcase ( 1 ) over the length of the fuel supply line a plurality of recesses ( 27 ) are provided for fuel pumps, in the later fuel pumps are used, wherein the fuel supply line by post-processing measures on the cast cylinder crankcase ( 1 ) in each case in the areas of the recesses ( 27 ) is cut or severed, whereby the connections between the guide channel ( 5g ) and fuel pumps are made. Cast component according to Claim 16, characterized in that a fuel pipe cast in as a pipe ( 24 ) forms a fuel return line. Cast component according to one of claims 13 to 17, characterized in that the cylinder crankcase at least one cast-in as a guide channel ( 5e ) comprising a supply line ( 11 ) for the piston cooling forms that the supply line ( 11 ) is formed for the piston cooling substantially exposed and is cast in several places locally ring-like with casting material of the component, so that casting mounts ( 13 ) and that the casting mounts ( 13 ) Are mounting points for spray nozzles which are subsequently mechanically inserted into the supply line ( 11 ) are introduced for the piston cooling and which are each designed and arranged so that they inject lubricant directed into a cylinder space below a piston head. Cast component according to claim 18, characterized in that the supply line ( 11 ) for the piston cooling in the longitudinal extent of the cylinder crankcase ( 1 ) and that several cylinders ( 12 ) from a common supply line ( 11 ) are supplied from oil. Cast component for an internal combustion engine, wherein the component is a cylinder crankcase ( 1 ), which has at least one guide channel ( 5 . 5e ), which is formed in the form of a tube and is cast during casting of the component and which forwards a fluid medium to a demand site, wherein the fluid medium is oil, characterized in that the at least one guide channel cast in as a tube ( 5e ) a supply line ( 11 ) forms for the piston cooling. Cast component according to claim 20, characterized in that the supply line ( 11 ) is formed for the piston cooling substantially exposed and is cast in several places locally ring-like with casting material of the component, so that casting mounts ( 13 ) are formed. Cast component according to claim 21, characterized in that the casting mounts ( 13 ) Are mounting points for spray nozzles which are subsequently mechanically inserted into the supply line ( 11 ) are introduced for the piston cooling and which are each designed and arranged so that they inject lubricant directed into a cylinder space below a piston head. Cast component according to one of claims 20 to 22, characterized in that the supply line ( 11 ) for the piston cooling in the longitudinal extent of the cylinder crankcase ( 1 ) and that several cylinders ( 12 ) from a common supply line ( 11 ) are supplied from oil. Cast component according to one of claims 20 to 23, characterized in that the cylinder crankcase ( 1 ) at least one guide channel cast in as a tube ( 5g ) comprising a fuel line ( 24 ) forms for the supply of a fuel pump. Cast component according to claim 24, characterized in that the fuel line ( 24 ) in the longitudinal extent of the cylinder crankcase ( 1 ) runs. Cast component according to claim 24 or 25, characterized in that the fuel line ( 24 ) forms a fuel supply line and in the cylinder crankcase ( 1 ) over the length of the fuel supply line a plurality of recesses ( 27 ) are provided for fuel pumps, in the later fuel pumps are used, wherein the fuel supply line by post-processing measures on the cast cylinder crankcase ( 1 ) in each case in the areas of the recesses ( 27 ) is cut or severed, whereby the connections between the guide channel ( 5g ) and fuel pumps are made. Cast component according to one of Claims 24 to 26, characterized in that a fuel line cast in as a pipe ( 24 ) forms a fuel return line. Cast component for an internal combustion engine, wherein the component is a cylinder crankcase ( 1 ), which has at least one guide channel ( 5 . 5g ) which is formed in the form of a tube and is cast in during the casting of the component and which forwards a fluid medium to a demand point, characterized in that the fluid medium is fuel and the at least one guide channel cast in as a tube ( 5g ) a fuel line ( 24 ) for the supply of a fuel pump that the fuel line ( 24 ) in the longitudinal extent of the cylinder crankcase ( 1 ) and that the fuel line ( 24 ) forms a fuel supply line and in the cylinder crankcase ( 1 ) over the length of the fuel supply line a plurality of recesses ( 27 ) are provided for fuel pumps, in the later fuel pumps are used, wherein the fuel supply line by post-processing measures on the cast cylinder crankcase ( 1 ) in each case in the areas of the recesses ( 27 ) is cut or severed, whereby the connections between the guide channel ( 5g ) and fuel pumps are made. Cast component according to Claim 28, characterized in that a fuel pipe cast in as a pipe ( 24 ) forms a fuel return line. Cast component according to one of the preceding claims, characterized in that at least one cast-in guide channel ( 5 . 5c . 5d . 5e . 5f . 5g ) is arranged such that it runs partially or completely exposed in parts. Cast component according to one of the preceding claims, characterized in that at least one cast-in guide channel ( 5 . 5c . 5d . 5e . 5f . 5g ) has different cross-sectional shapes in its course.