DE102017101707A1 - An engine block member for an internal combustion engine, and a method of manufacturing a molded body of an engine block member - Google Patents

Abstract

The invention relates to an engine block element (1) for an internal combustion engine (40), wherein the engine block element (1) has a base body (10) in the form of a casting of base body material, and cavities are arranged in the base body (10). Furthermore, the invention relates to a method for producing a cast main body (10) of an engine block element (1) for an internal combustion engine (40), wherein for the production of cavities (11) in the base body 10) a mold is used and / or prior to introducing a melt at least one casting core is arranged in the casting mold from the base body material, which is removed after casting from the cast base body (10) and an internal combustion engine (40) with at least one engine block element (1), the engine block element (1) a base body (10) and a cooling distribution system (5).

Description

The present invention relates to an engine block member for an internal combustion engine, and to a method of manufacturing a molded body of an engine block member.

Modern internal combustion engines are usually composed of several engine block elements, such as a cylinder head and a cylinder block. The engine block elements furthermore generally have a base body, which is often present in the form of a casting of a base body material. The base material may be, for example, a metal material, for example iron, steel or aluminum. In the main body cavities are also arranged, these cavities, for example, as recesses, such as. B. cylinder bores can be formed. Furthermore, these cavities can also be arranged in the interior of the base body, for example as part of a cooling distribution system, in order to be able to provide internal cooling for the engine block element during operation of the internal combustion engine. The cavities always have openings to the outside of the main body, in particular, for example, to be able to conduct a cooling fluid into the cavities. The cavities are produced in particular, for example, already during the casting process for producing the base body by a mold of a casting mold or a casting core with base body material arranged in the casting mold. After the casting process, the casting mold is removed from the finished cast base and the casting core removed from the interior of the cast base body.

In particular, when using the cavities for a cooling distribution system, an optimized geometric configuration of the cavities for an ideal cooling of the engine block element can often be very complicated and complex. For example, from the WO 2014/118627 A1 a multi-branch cooling distribution system is known in which the cooling system comprises a plurality of separate branches to improve cooling of the engine block element. A disadvantage in the use of the above-described cavities for cooling an engine block element has been found in particular that the casting cores used to produce the cavities can not be configured arbitrarily complex. As a remedy, for example, from the US 2015/0027658 A1 known to design such a cast core of a plurality of materials, in particular of a ceramic material and a sand material. However, even with such a hybrid casting core, only a limited complexity of the voidable cavities can be provided. This can be justified by the fact that the cast cores used for the casting process must be stable enough and also after the casting process always have to be removed from the cast body of the engine block element again.

It is therefore an object of the present invention to at least partially overcome the disadvantages described above. In particular, it is an object of the present invention to provide an engine block element for an internal combustion engine and a method for producing a cast main body of a motor block element, which improve in a particularly simple and cost-effective manner, an arrangement and geometrical variability of cavities in cast bodies, in particular the achievable complexity of generated cavities is increased, whereby, for example, a better cooling of the engine block element can be provided.

The above object is achieved by an engine block element for an internal combustion engine with the features of independent claim 1. Further, the object is achieved by a method for producing a cast main body of an engine block element for an internal combustion engine with the features of independent claim 9 and by an internal combustion engine having the features of independent claim 13. Further features and details of the invention will become apparent from the dependent claims, the description and the drawings. In this case, features and details that are described in connection with the engine block element according to the invention apply, of course, also in connection with the inventive method and in each case vice versa, so that with respect to the disclosure of the individual aspects of the invention always reciprocal reference is or may be.

According to a first aspect of the invention, the object is achieved by an engine block element for an internal combustion engine, wherein the engine block element has a base body in the form of a casting of base body material, and wherein cavities are arranged in the base body and further wherein the engine block element has at least one tubular element, wherein the at least a tubular element is at least partially encapsulated with basic body material and wherein the at least one tubular element in the main body forms a continuous line with a line input and a line output.

An engine block element according to the invention for an internal combustion engine has a cast base body. The cavities arranged in the main body can be particularly preferably caused by casting cores, which during the casting process for producing the Basic body were arranged in a mold. By removing the casting cores after the casting process, the cavities are exposed in the body and are therefore available, for example, for use in a cooling distribution system. In particular, the cavities also have openings to the outside of the main body of the engine block element, whereby, in particular, a cooling fluid can be introduced or removed for carrying out a cooling of the engine block element.

Essential to the invention, at least one tubular element of the engine block element is arranged in the base body. The at least one pipe element is at least partially encapsulated with body material. In order to achieve this, in particular, the pipe element was arranged in the mold prior to carrying out the actual casting process and then cast around at least in sections with the base body material. By this encapsulation, a particularly strong embedding and fixing of the tubular element in the base body material of the base body can be achieved. The tubular element can be designed as a simple tube, but also assume any other, in particular arbitrarily complex, form. In the context of the invention, a pipe element according to the invention is also understood to mean, for example, a branched system of pipes or a pipe network. The at least one tubular element forms a continuous line in the main body. Uniform in the sense of the invention means in particular that the pipe element and thus also the line have a line input and a line output, which are arranged in or on a surface of the base body. In this case, such a surface of the base body may be both an external surface, which is accessible in particular from outside the base body. A connection of the tubular element and thereby the continuous line to devices outside the main body, for example to an external cooling fluid circuit, can be provided thereby. Furthermore, such a surface of the base body may also be an internal surface of the base body, for example a cavity in the interior of the base body. As a result, for example, a transport of a fluid through the tubular element and thus through the continuous line to the inner cavity can be provided. A continuous line within the meaning of the invention thus means in particular that the line input and the line output of the continuous line are not closed but open to an environment outside the body and / or to a cavity in the interior of the body. Conduction of fluids, in particular cooling fluids, through the continuous conduit formed by the at least one tubular element can thereby be provided. In particular, a high complexity of a conduit system in the interior of the base body can be achieved in a particularly simple manner by means of such a tubular element. The at least one pipe element can be constructed and made before the actual casting process for the production of the body. Such a construction may, for example, also comprise simulations, in particular comprising a numerical simulation of a fluid mechanics. The possible high complexity of the pipe system which is made possible by the at least one pipe element in the interior of the main body can be justified, in particular, by arranging the pipe element already hollow and as a continuous line in the main body. In contrast to a cavity which is produced by molding a casting core, the at least one tube element remains in the base body after the casting process and does not have to be removed from it like a casting core. In particular, line sections with a particularly small free flow cross section can be generated in the main body. Thus, through the continuous line, which forms the at least one pipe element in the base body, regions in the base body of the engine block element can be achieved, which are not accessible when using cavities generated by casting cores. As a result, for example, an even better cooling of a base body of a motor block element can be provided.

In an engine block element according to the invention, it can preferably be provided that the engine block element is a cylinder head and / or a cylinder block. As a result, the possible uses of a motor block element according to the invention can be further increased. In this case, either the cylinder head or the cylinder block can be designed as an inventive engine block element, wherein particularly preferably both engine block elements, both the cylinder head and the cylinder block, are formed as an inventive engine block element. In this way, continuous lines can be provided by an encapsulated pipe element in the respective base body of the cylinder head and the cylinder block both in the cylinder head and in the cylinder block.

Also, an inventive engine block element may be designed to the effect that the at least one pipe element aluminum and / or steel, in particular made of aluminum and / or steel. By using aluminum and / or steel, a particularly high stability or durability of the tubular element can be provided in the case of the at least one tubular element of a motor block element according to the invention. In addition, through these materials, when using the continuous line passing through the at least one tubular element is formed in the base body, in a cooling distribution system a particularly good heat transfer between the base body material of the base body and a cooling fluid in the interior of the continuous line are made possible. An even better cooling of a motor block element according to the invention can thereby be made possible.

Particularly preferably, in an engine block element according to the invention, it can be provided that a cavity arranged in the main body is at least part of a first branch of a cooling distribution system of the engine block element and the at least one pipe element is at least part of the second branch of the cooling distribution system, wherein in particular the first branch of the cooling distribution system and the second branch of the cooling distribution system are connected in fluid communication. By means of a cooling distribution system of the engine block element, a cooling fluid can be distributed in the interior of the engine block element, in particular in the interior of the main body of the engine block element, and brought to areas of the engine block element to be cooled and also removed again. The cavity arranged in the main body and the continuous line formed by the at least one tubular element form at least those elements of the respective branch of the cooling distribution system in which the cooling fluid is passed. The branches of the cooling system can also be continued in adjacent further engine block elements, whereby, for example, a total cooling of an internal combustion engine, in which an engine block element according to the invention is used, can be improved. The cooling distribution system may also include other elements such as valves, flaps or slides. In this case, cooling of the engine block element as a whole can be improved by the presence of several branches of the cooling distribution system. Thus, for example, by the first branch, which is at least partially formed by the arranged in the body cavity, a large-volume and in particular general cooling of the engine block element can be provided. The cavity arranged in the main body can be kept free in particular preferably by a casting core during casting of the base body. Particularly large-volume cavities can be made particularly simple in this way. By a second branch of the cooling distribution system, which is formed by the at least one tubular element and in particular by the continuous line formed thereby, a line of cooling fluid may be provided in areas of the main body, which are not accessible to a cavity produced by a casting core are. A targeted and in particular direct conduction of a cooling fluid in the second branch to a region of the base body through the line formed by the pipe element can be done without a detour via the cavity. In this way, the first branch of the cooling distribution system and the second branch of the cooling distribution system can complement each other particularly advantageous. In particular, a high degree of complexity can be provided in at least the second branch of the cooling distribution system by the at least one tubular element or the continuous line formed thereby in a particularly simple manner. Also, the first branch and the second branch of the cooling distribution system may be fluidly communicatively connected. This fluid-communicating connection can be realized both in the main body, but also outside the main body, for example in a common radiator and / or by a common pumping device. An avoidance of redundancies in the cooling distribution system can be achieved. Alternatively, the branches of the cooling distribution system may also be provided separately from each other. As a result, for example, a different pressure or a different temperature of the cooling fluid in the various branches of the cooling distribution system can be provided in a particularly simple manner.

Preferably, an engine block element according to the invention can be further developed such that the second branch of the cooling distribution system extends into an adjacent engine block element of the internal combustion engine and in that the line exit of the at least one pipe element is arranged in a surface of the base body which is provided for contacting the adjacent engine block element, a coolant in the tubular element can be conducted through the main body and fed to the section of the second branch of the cooling distribution system in the adjacent engine block element. In this case, in particular, the adjacent engine block element may also be an inventive engine block element with a cast-tube element. Alternatively, the adjacent engine block member may also be formed as a normal engine block member without such a molded tubular member. Through a continuous line, which is formed by the tubular element in the engine block element according to the invention, a supply of cooling fluid can be provided to be cooled areas in the internal combustion engine. This can be provided in particular while avoiding avoidable temperature losses, since even short conduit paths in the interior of the engine block element are made possible by the use of the tubular element. In particular, it may occur that the area to be cooled is arranged in an engine block element adjoining an engine block element according to the invention such that a supply of cooling fluid would be effected in a particularly short way, in particular by the engine block element according to the invention. By an extension of the second branch of Cooling distribution system, which is at least partially formed by the pipe element or the pipe formed by the pipe element, in the adjacent engine block element can thus be improved cooling of this area in the adjacent engine block element. By the continuous line cooling fluid can be supplied directly to the corresponding area of the adjacent engine block element without avoidable temperature losses. As an example, a cylinder head as an engine block element according to the invention and a cylinder block as an adjacent engine block element may be mentioned here. For example, webs represent between cylinder receptacles in the cylinder block areas that are exposed to a high temperature load and the other are difficult to access for cooling. Here, these webs may for example be slotted and thereby formed open to a surface of the cylinder block. In particular, when the cylinder head is arranged on the cylinder block, it can be provided that the pipe outlet of the at least one pipe element is connected in a fluid-communicating manner with this slot in the web between the cylinder receivers. A supply of cooling fluid into the slot in the web between the cylinder receivers can thereby be provided in a particularly simple manner, wherein this cooling fluid can in particular have a particularly low temperature due to the use of the continuous line. A derivation of the cooling fluid from the slot can then be carried out, for example, via the fluid-communicating connection to the first branch of the cooling distribution system. A particularly good cooling of these webs can be provided thereby.

In addition, in a further development of the engine block element according to the invention, it can be provided that the at least one pipe element is arranged in the base body in such a way that at least one cooling zone with high temperature loading of the engine block element can be cooled by the second branch of the cooling system. A high temperature load in the sense of the invention is in particular a temperature load which is higher than an average temperature load in the engine block element. Such a high temperature load can occur, for example, in areas of the engine block element which are arranged close to the combustion processes taking place in the internal combustion engine. The temperature load is generally higher, the closer the area is arranged at the locations of the combustion processes. As described above, a second branch of a cooling distribution system with high complexity can be provided by the at least one tubular element or by the continuous line formed by the at least one tubular element. An adaptation of the configuration of the at least one tube element for a good, particularly good cooling of the at least one cooling region with high temperature load can be provided thereby particularly simply. A direct and / or indirect cooling of the at least one cooling area with a high temperature load on the engine block element can thereby be provided in a particularly simple and effective manner.

Also, an engine block element according to the invention can be further developed such that the at least one cooling region is a web between two cylinder receivers and / or an exhaust gas outlet region. A web between two cylinder receivers and / or a Abgasauslassbereich represent preferred examples in which an occurrence of high temperature load is particularly likely. Thus, for example, the web is an area in the engine block element which is arranged particularly close to the actual combustion processes in the internal combustion engine. An exhaust gas outlet area absorbs the combustion products as exhaust gases and is thus also exposed to a high temperature load. In this case, other areas of the engine block element can also represent cooling areas with a high temperature load and can thus also be provided for an arrangement of the at least one pipe element in the main body.

According to a further development, an engine block element according to the invention can be designed such that a free flow cross-section of the pipe element is reduced at least near the at least one cooling region in order to increase a flow velocity of a coolant. In particular, a better cooling of the cooling area can be provided by an increased flow velocity of the cooling liquid. This can be justified, in particular, by virtue of the fact that a throughput of cooling liquid can be increased by an increase in the flow rate, as a result of which heated cooling liquid can be transported away more quickly and fresh coolant liquid at a lower temperature can be supplied more quickly. Furthermore, it can also be provided to make an immediate widening of the free flow cross section after the reduction of the free flow cross section and the concomitant increase in the flow velocity. As a result of the resulting pressure loss in the cooling liquid, the temperature of the cooling liquid will decrease, whereby additional cooling can likewise be provided. The area of the tube element with the reduced free flow cross-section acts like a nozzle. Also, the changes in the flow cross-section may preferably be made such that, despite a reduction in the free flow cross section, a high surface area of the tubular element is close to the at least one Cooling area is arranged. Due to this high surface area, the tube element can have a large contact surface with the at least one cooling region. As a result, a temperature exchange between the cooling fluid in the tubular element and in the at least one cooling region can be improved. By means of each of these embodiments, and in particular also by a combination of these embodiments, cooling of the at least one cooling region can thus be increased in each case.

In a second aspect of the invention, the object is achieved by a method for producing a cast base body of an engine block element for an internal combustion engine, wherein a casting mold is used to generate a cavity with the base body and / or at least one casting core prior to the introduction of a melt of base body material the casting mold is removed, which is removed after the casting process from the cast base body and further wherein before introducing the melt into the mold, a tubular element, comprising a line input and a line output, is arranged such that the line input and the line output to the mold and / or are arranged at least on the casting core, wherein the pipe element is cast at least in sections with the base body material during casting, wherein the at least one pipe element remains in the base body after the casting process and wherein the pipe element is a continuous line in Grundk body is formed.

By a method according to the invention, a cast base body of an engine block element for an internal combustion engine can be produced. In this case, cavities can be produced in the base body, wherein the casting mold itself can be used for this generation in the cavities or at least one casting core can be arranged in the casting mold. By opening the casting mold or by removing the casting core from the interior of the base body after the casting process, cavities can thereby be provided in a particularly simple manner. In particular, the cavities produced thereby are also accessible from outside the main body, so that they can be used for example for conducting a cooling fluid for internal cooling of the engine block element. However, the casting cores used to create the cavities inside the body can not be made with any complexity. Therefore, it is provided according to the invention to arrange a tube element in the mold before introducing the melt. The tubular element in this case has a line input and a line output, which are each arranged at one end of the tubular element. The tubular element itself may have any complexity and in particular, for example, also have branches or be designed as a pipeline network. The line input and the line output are arranged after the introduction of the tubular element in the interior of the casting mold on the casting mold and / or on the at least one casting core. This can ensure that a continuous line in the main body can be formed by the tubular element. Uniform in the sense of the invention means in particular that the line input and the line output are open and accessible, so that, for example, through the line inlet, a fluid can be introduced into the pipe element, which leaves the pipe element again through the line exit. By means of the above-described arrangement of the line input and the line output on the casting mold and / or on the at least one casting core, it can be ensured that precisely this line inlet and the line exit in the finished cast base element are accessible for this introduction / discharge of a fluid. Essential to the invention it is provided that the tubular element is at least partially encapsulated with base body material during the casting process of the base body and that the tubular element remains in the base body after the casting process. As a result, a continuous line can be provided in the base body, in which a particularly high level of complexity is made possible and which has a high degree of flexibility with regard to its spatial design. In particular, this can be made possible, for example, to direct a fluid, in particular Favor a cooling fluid, in or on regions of the body, which are not or only very difficult to reach by cavities that can be generated by encapsulating a casting core in the body. As a result, for example, a cooling of such a cast main body of an engine block element can be improved.

A method according to the invention can be further developed such that, when the tube element is arranged in the casting mold between the line exit and / or the line entrance and a surface of the at least one casting core and / or a surface of the casting mold, a melt-sealed contact is produced. The placing of the tubular element in the mold takes place before the actual casting process. By establishing a melt-tight contact between the line output and / or the line input and a surface of the at least one casting core and / or a surface of a casting mold can thus be ensured that during the casting process no melt via the line input or the line output in the pipe element and thereby penetrates into the continuous line. Blocking of the conduit by such melt which has penetrated into the conduit can thus be reliably avoided. A continuity of the line can be ensured in this way so easy.

In addition, a method according to the invention can be designed such that the line exit and / or the line entrance are reversibly closed prior to introduction of the melt into the casting mold. This reversible closing of the line output and / or the line input can be carried out alternatively or additionally to a melt-tight contacting of the line output and / or the line input and a surface of the at least one casting core and / or a surface of the casting mold. By the reversible closing of the line outlet and / or the line input can also be prevented that melt during the casting process in the pipe element and thus penetrates into the continuous line. Due to the reversibility of the closure of the line can be ensured that after the casting process this closure removed again while a continuity of the line can be reached again. Also in this way it can be ensured that a continuous line can be provided by the cast-tube element in the base body.

In a method according to the invention, it may be particularly preferred for the method to produce a base body for a motor block element according to the first aspect of the invention. Accordingly, a method according to the invention will then bring about the same advantages as have been explained in detail with reference to an engine block element according to the invention according to the first aspect of the invention.

In a third aspect of the invention, the object is achieved by an internal combustion engine having at least one engine block element, the engine block element having a base body and a cooling distribution system, wherein cavities are arranged in the base body for a first branch of a Kühlverteilsystems the engine block element and the cooling distribution system of the engine block element has a second branch wherein at least one high temperature load cooling area of the engine block member is cooled by the second branch of the cooling system and further wherein the second branch has a bypass portion for conducting a cooling liquid to said at least one high temperature load cooling area of the engine block member, bypassing the cavities used in the first branch Basic body has.

An internal combustion engine according to the invention has at least one engine block element, for example a cylinder head or a cylinder block, preferably both a cylinder head and a cylinder block. In the at least one engine block element cavities are arranged, which form at least part of a first branch of a cooling distribution system of the engine block element. By this Kühlverteilsystem, which can also extend into more than one engine block element, the internal combustion engine and in particular the engine block element can be cooled. The cooling distribution system of an internal combustion engine according to the invention additionally has a second branch, by means of which at least one cooling region with a high temperature load on the engine block element can be cooled directly. A high temperature load in the sense of the invention is in particular a temperature load which is higher than an average temperature load in the engine block element. Such a high temperature load can occur, for example, in regions of the engine block element which are arranged close to the combustion processes taking place in the internal combustion engine, for example exhaust gas outlet regions and / or webs between the cylinder receivers. The temperature load is generally higher, the closer the area is arranged at the locations of the combustion processes. In order to be able to provide improved cooling particularly easily for this at least one cooling area, the second branch has a bypass section, through which a cooling fluid can be conducted to this at least one cooling area with a high temperature load. As a result, this conduction of the cooling liquid to the at least one cooling zone with high temperature load, in particular bypassing the cavities in the engine block element, which are used for the first branch of the cooling distribution system can be provided. In this way, the cooling liquid can be passed directly to the at least one cooling area with high temperature load, whereby improved cooling of this cooling area can be provided. Also, through the use of the bypass section, the cooling fluid may be provided at the at least one cooling area as compared to a conduit through the first branch of the cooling distribution system having a lower pressure drop and / or a lower temperature and / or a higher flow volume. This also makes it possible to improve cooling of the at least one cooling region.

According to a preferred further development of an internal combustion engine according to the invention, it may further be provided that the bypass section is arranged at least in sections inside the at least one engine block element and / or that the bypass section is arranged at least partially outside the at least one engine block element and / or the first branch and the second branch the cooling distribution system are connected fluidkommunizierend. By an embodiment of the bypass section at least In some sections inside the engine block element, cooling regions can also be achieved by the second part of the cooling distribution system, which are arranged in the interior of the engine block element. An at least partial arrangement of the bypass section outside of the engine block element can help to keep the cooling liquid in the bypass section and thus in the second branch of the cooling distribution system from the general heat emanating from the engine block element. An even better, in particular more direct and exclusive cooling of the at least one cooling area can thereby be provided. Also, the first branch and the second branch of the cooling distribution system may be fluidly communicatively connected. This fluid-communicating connection can be realized both in the main body, but also outside the main body, for example in a common radiator and / or by a common pumping device. An avoidance of redundancies in the cooling distribution system can be achieved. Alternatively, the branches of the cooling distribution system may also be provided separately from each other. As a result, for example, a different pressure or a different temperature of the cooling fluid in the various branches of the cooling distribution system can be provided in a particularly simple manner.

In addition, an internal combustion engine according to the invention can be designed such that the at least one engine block element according to the first aspect of the invention is formed, wherein in particular the at least one pipe element is at least part of a second branch of the cooling distribution system. Accordingly, an internal combustion engine according to the invention then brings about the same advantages as have been explained in detail with reference to an engine block element according to the invention according to the first aspect of the invention. These advantages can be achieved, in particular, by virtue of the fact that the at least one pipe element is at least part of a second branch of the cooling distribution system, for example of the bypass section.

Furthermore, it can be provided in an internal combustion engine according to the invention that the base body of the at least one engine block element is produced using a method according to the second aspect of the invention. Accordingly, an internal combustion engine according to the invention then brings the same advantages as have been explained in detail with reference to a method according to the invention according to the second aspect of the invention.

Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the drawings, embodiments of the invention are described in detail. The features mentioned in the claims and the description may each be essential to the invention individually or in any desired combination. Elements with the same function or mode of action are provided with the same reference numerals.

They show schematically:

1 A first embodiment of a motor block element according to the invention,

2 A second embodiment of a motor block element according to the invention,

3 a method according to the invention,

4 a possible embodiment of an internal combustion engine according to the invention,

5 two further possible embodiments of an internal combustion engine according to the invention, and

6 two further possible embodiments of an internal combustion engine according to the invention.

In 1 are two views of a first embodiment of a motor block element according to the invention 1 shown. The two views are described together below. The engine block element 1 is designed as a cylinder head. Here, in the upper figure, a semitransparent top view of a surface 12 of a basic body 10 of the engine block according to the invention 1 shown. The picture below shows an oblique view of this very surface 12 of the basic body 10 , The engine block element according to the invention 1 in particular has a tubular element 20 on that inside the main body 10 is arranged. In particular, this pipe element 20 during a casting process with basic body material of the main body 10 been poured over. The pipe element 20 , which may for example comprise aluminum and / or steel, can be particularly strong and with particularly good heat-conducting contact in the body 10 be arranged. It is clearly visible that the pipe element 20 doing so in the body 10 is arranged, which is a line input 21 or a line output 22 of the tubular element 20 in a surface 12 of the basic body 10 are arranged so that through the tubular element 20 in the main body 10 a continuous line is provided. In particular, this can be made possible that the tubular element 20 at least part of a second branch 7 a cooling distribution system 5 of the engine block element 1 forms. coolant 30 can through the line entrance 21 in the pipe element 20 be initiated, through the pipe element 20 inside the body 10 distributed and through the line output 22 from the main body 10 be discharged again. In the illustrated embodiment of an engine block according to the invention 1 extends this second branch 7 of the cooling distribution system 5 in another engine block element 1 that is not pictured. The engine block element 1 has cylinder shots 4 on, through the bridges 2 are separated. Im not shown with another engine block element 1 , which is then designed as a cylinder block, set this cylinder shots 4 and footbridges 2 continued. Since the combustion processes during operation of the internal combustion engine 40 (not shown), in which the engine block element according to the invention 1 is installed in these cylinder shots 4 be held, in particular, the webs 2 but also, for example, an exhaust outlet area 3 Areas that are exposed to a particularly high temperature load. At the same time, these are areas that pass through a first branch 6 of the cooling distribution system 5 passing through a cavity 11 in the main body 10 is formed, not or only with difficulty accessible. In the illustrated embodiment of a motor block element according to the invention 1 It is therefore intended, through the tubular element 20 a supply of cooling liquid 30 for cooling the bars 2 to provide. That's what the bars are for 2 in the unmapped adjacent engine block element 1 with slots running in through the cable exit 22 of the tubular element 20 coolant 30 can be initiated. This is the line output 22 such in the surface 12 arranged that a fluid-communicating connection between the tubular element 20 and the slot is formed. The coolant 30 can through a cavity 11 in particular part of a first branch 6 of the cooling distribution system 5 is, again from the slots of the webs 2 be derived. The supply of cooling fluid 30 by a in the main body 10 cast-in pipe element 20 has the particular advantage that this pipe element 20 especially needs-based in the basic body 10 of the engine block element 1 can be arranged. A supply line of the coolant 30 to the jetties 2 can be made particularly short. Furthermore, through the tubular element 20 an independent second branch 7 of the cooling distribution system 5 be provided so that in this second branch 7 for example, a lower temperature or a higher pressure of the cooling liquid 30 as in the first branch 6 of the cooling distribution system 5 can prevail. A cooling of the bars 2 can be further improved. Through a discharge of the cooling liquid 30 through cavities 11 In this embodiment, there is a fluid-communicating bond between the first branch 6 and the second branch 7 of the cooling distribution system 5 , In other embodiments, the two branches 6 . 7 of the cooling distribution system 5 also be completely separate. Also, such a fluid-communicating connection between the two branches 6 . 7 even outside the main body 10 be present, for example by the use of a common radiator or a common pumping device. Overall, in an engine block element according to the invention 1 by the presence of a cast pipe element 20 in the main body 10 provide better cooling of areas that have on the one hand a high temperature load and the other by conventional first branches 6 of cooling distribution systems 5 , in particular cavities 11 in the main body 10 use, difficult or impossible to achieve.

2 schematically shows a further embodiment of a motor block element according to the invention 1 Here is a schematic plan view of a surface 12 of a basic body 10 is shown. Again, part of a second branch 7 a cooling distribution system 5 shown in this embodiment of a motor block element according to the invention 1 in particular for cooling an exhaust gas outlet region 3 is trained. It is envisaged that in the vicinity of the Abgasauslassbereiche 3 a free flow cross-section of the tubular element 20 that is part of the second branch 7 of the cooling distribution system 5 forms, is reduced. A flow rate of a cooling liquid 30 can be increased. coolant 30 thus flows at a higher speed at the Abgasauslassbereichen 30 passing, thereby increasing the throughput of cooling fluid 30 a better temperature discharge and thus a better cooling of these exhaust gas outlet areas 3 can be provided. It is the 2 the pipe element 20 only until reaching the Abgasauslassbereiche 3 displayed. The for the discharge of the cooling liquid 30 used elements of the cooling distribution system 5 are not shown with. Thus, for example, be provided that after the reduction of the free flow cross-section in the pipe element 20 a renewed enlargement of the flow cross-section occurs. The concomitant pressure reduction in the coolant 30 can cause a lowering of the temperature of the coolant 30 and thereby also lead to an improvement in the cooling performance. Also, the pipe element 20 have a large surface near the area to be cooled. This allows a contact surface between the cooling liquid 30 and the area to be cooled are increased. This can also cause heat transfer into the coolant 30 and thus a cooling performance can be improved.

3 schematically shows a method according to the invention. The necessary for carrying out the method according to the invention devices and elements are in 3 not pictured. In one first section A of a method according to the invention is a tubular element 20 in a mold for a basic body 10 an engine block element 1 arranged. This is done in such a way that a line input 21 and a line output 22 are arranged on the mold itself and / or on at least one casting core, wherein the casting core for generating a cavity 11 in the main body 10 is provided. As a result, a melt-sealed contact between the line input is particularly preferred 21 and / or the line output 22 and the surface of the at least one casting core or of the casting mold. Also can be provided before arranging the line input 21 and / or the line output 22 to close reversibly. By both measures can be ensured that the casting process for the production of the body 10 no melt in the pipe element 20 can penetrate. This casting process is carried out in the next section B of a method according to the invention. Here, a mold is filled with body material, so that on the one hand the body 10 and on the other hand both the at least one casting core and the tubular element 20 be at least partially encapsulated. Finally, in the last section C of a method according to the invention, the casting core is removed from the base body 10 removed, causing the main body 10 cavities 11 arise. In contrast, this remains at least one pipe element 20 in the main body 10 , Through the pipe element 20 can thus in particular in the interior of the body 10 Areas for fluids made by conventional cavities produced by casting cores 11 are not accessible. Also, a complexity may be due to the tubular element 20 inside the body 10 generated continuous line be particularly high, which also at very inaccessible areas in the body 10 a supply of fluid, in particular with a cooling liquid 30 , can be provided. Particular preference may be given by such a method according to the invention a basic body 10 an engine block element 1 be prepared as exemplified in the 1 and 2 are shown.

The 4 . 5 and 6 each show possible embodiments of an internal combustion engine according to the invention 40 , each in particular in the special shape of the cooling distribution system 5 differ. The various embodiments will be described below together with common features and differences of the individual embodiments.

Each of the illustrated embodiments of the internal combustion engine 40 points as engine block elements 1 a cylinder head 41 and a cylinder block 42 on. In the cylinder head 41 is in each case schematically a Abgasauslassbereiche 3 , in the cylinder block 42 a cylinder holder 4 characterized. In this case, the Abgasauslassbereiche 3 and the footbridges 2 (not shown) between the cylinder holders 4 Cooling areas, which in an operation of the internal combustion engine 40 are exposed to a particularly high temperature load. The cooling system 5 the engine block elements 1 has a pumping device 31 for circulating a coolant 30 in particular by a temperature controller 32 regulated is operable. Through a radiator 32 can be a heat energy, which is the cooling liquid 30 when cooling the engine block elements 1 pick up, be returned. The cooling distribution system 5 has a first branch 6 on, in particular through cavities 11 in the basic bodies 10 the engine block elements 1 is formed. This first branch 6 provides a general cooling of both the cylinder head 41 as well as the cylinder block 42 for sure.

The cooling distribution system 5 also has a second branch 7 on, in particular by the above-described cooling regions with a particularly high temperature load, for example, the Abgasauslassbereiche 3 or the webs 2 between the cylinder shots 4 , can be cooled directly and directly. The first branch 6 and the second branch 7 of the cooling distribution system 5 are connected in a fluid-communicating manner, so that, for example, the pumping device 31 for circulating the cooling liquid 30 and the radiator 32 for both branches 6 . 7 can be used. In particular, the embodiments of the internal combustion engines shown differ 40 in the training of these second branches 7 of the respective cooling distribution system 5 , All second branches 7 is common that they are at least partially through a tubular element 20 are formed. This pipe element 20 is doing in a production of the corresponding body 10 of the respective engine block element 1 been encapsulated with engine block material and according to the invention after the casting process in the engine block element 1 remained. Particularly varied embodiments of the second branches thus produced 7 can be provided thereby, as in particular restrictions, as they are in casting processes with cast iron cores, which must be removed after the casting process, by the whereabouts of the tubular elements 20 in the engine block element 1 can be bypassed. Also have the second branches 7 in each case at least one bypass section 8th on, by the particular cooling liquid 30 on the first branch 6 and thereby on the cavities used for it 11 in the respective basic body 10 can be passed directly to a cooling area with high temperature load. As a result, for example, a lower pressure loss, a lower temperature and / or a higher flow rate of the coolant 30 be made possible on or in the vicinity of these particularly temperature-loaded cooling areas. An improved cooling of these cooling areas can be provided thereby particularly simply. In particular, it is often advantageous if the respective bypass section 8th at least partially by a tubular element 20 is formed. A particularly large design freedom in the planning and / or design of the cooling distribution system 5 can be provided thereby.

The illustrated embodiments of internal combustion engines 40 As already mentioned above, they differ essentially by the formation of the respective second branch 7 of the cooling distribution system 5 , For example, the cooling distribution system 5 , this in 4 shown is two bypass sections 8th on, each inside the cylinder block 42 or the cylinder head 41 are arranged. The first bypass section 8th provides direct cooling of the bars 2 in the cylinder block 42 with coolant 30 , the second bypass section 8th goes through the cylinder block 42 through to the cylinder head 41 in which he opted for a direct cooling of the exhaust outlet areas 3 splits. A similar cooling distribution system 5 is in 5 displayed. In contrast to 4 for cooling the bars 2 not just the actual supply lines through a pipe element 20 , but also the supply line inside the cylinder block 42 through pipe elements 20 educated. An even greater freedom of design when planning the cooling distribution system 5 can be provided thereby. The two embodiments of the 5 differ from each other in that in the upper embodiment of the bypass section 8th , the second branch 7 in the cylinder head 41 with coolant 30 supplied inside the engine block elements 1 in the lower embodiment outside of the engine block elements 1 is arranged. This is also the difference of the two in 6 shown embodiments of an internal combustion engine according to the invention 40 , From the in 4 and 5 These embodiments additionally differ in particular in that all cooling of the cooling areas, which are exposed to particularly high temperature loads, for example the webs 2 or the Abgasauslassbereiche 3 , from the cylinder head 41 be carried out from. In particular, it can be provided that the second branch 7 from the cylinder head 41 in the cylinder block 42 extends. This is in the 6 represented by arrows. In this way, a particularly good cooling of these highly loaded cooling areas can be made possible.

LIST OF REFERENCE NUMBERS

1

Engine block element

2

web

3

exhaust gas outlet

4

cylinder intake

5

Kühlverteilsystem

6

first branch

7

second branch

8th

bypass section

10

body

11

cavity

12

surface

20

tube element

21

line input

22

line output

30

coolant

31

pumping device

32

thermostat

32

radiator

40

internal combustion engine

41

cylinder head

42

cylinder block

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2014/118627 A1 [0003]
• US 2015/0027658 A1 [0003]

Claims (16)

Engine block element ( 1 ) for an internal combustion engine ( 40 ), wherein the engine block element ( 1 ) a basic body ( 10 ) in the form of a casting of base body material, and wherein in the base body cavities ( 11 ) are arranged, and further wherein the engine block element ( 1 ) at least one pipe element ( 20 ), wherein the at least one tubular element ( 20 ) is at least partially encapsulated with body material and wherein the at least one tubular element ( 20 ) in the main body ( 10 ) a continuous line with a line input ( 21 ) and a line output ( 22 ) trains. Engine block element ( 1 ) according to claim 1, characterized in that the engine block element ( 1 ) a cylinder head ( 41 ) and / or a cylinder block ( 42 ). Engine block element ( 1 ) according to claim 1 or 2, characterized in that the at least one pipe element ( 20 ) Comprises aluminum and / or steel, in particular made of aluminum and / or steel. Engine block element ( 1 ) according to one of the preceding claims, characterized in that a in the body ( 10 ) arranged cavity ( 11 ) at least a part of a first branch ( 6 ) of a cooling distribution system ( 5 ) of the engine block element ( 1 ) and the at least one pipe element ( 20 ) at least a part of a second branch ( 7 ) of the cooling distribution system ( 5 ), in particular the first branch ( 6 ) of the cooling distribution system ( 5 ) and the second branch ( 7 ) of the cooling distribution system ( 5 ) are connected in a fluid-communicating manner. Engine block element ( 1 ) according to claim 4, characterized in that the second branch ( 7 ) of the cooling distribution system ( 5 ) in an adjacent engine block element ( 1 ) of the internal combustion engine ( 40 ) and that the line output ( 22 ) of the at least one tubular element ( 20 ) in a surface ( 12 ) of the basic body ( 10 ) used to contact the adjacent engine block element ( 1 ), it is arranged that a cooling liquid ( 30 ) in the tubular element ( 20 ) through the main body ( 10 ) and the section of the second branch of the cooling distribution system ( 5 ) in the adjacent engine block element ( 1 ) can be fed. Engine block element ( 1 ) according to claim 4 or 5, characterized in that the at least one pipe element ( 20 ) in the main body ( 10 ) is arranged such that at least one cooling area with high temperature load of the engine block element ( 1 ) through the second branch ( 7 ) of the cooling system is coolable. Engine block element ( 1 ) according to claim 6, characterized in that the at least one cooling region is a web ( 2 ) between two cylinder receivers ( 4 ) and / or an exhaust gas outlet region ( 3 ). Engine block element ( 1 ) according to claim 6 or 7, characterized in that a free flow cross section of the tubular element ( 20 ) is reduced at least near the at least one cooling region to a flow velocity of a cooling liquid ( 30 ) increase. Method for producing a cast base body ( 10 ) of an engine block element ( 1 ) for an internal combustion engine ( 40 ), whereby for the production of cavities ( 11 ) in the main body ( 10 ) a casting mold is used and / or at least one casting core is arranged in the casting mold before the introduction of a melt of base material, which after casting is removed from the cast base body ( 10 ), and further wherein prior to the introduction of the melt in the mold a tubular element ( 20 ), comprising a line input ( 21 ) and a line output ( 22 ), is arranged such that the line input ( 21 ) and the line output ( 22 ) are arranged on the casting mold and / or on the at least one casting core, wherein the tubular element ( 20 ) is at least partially encapsulated with body material during the casting process, wherein the at least one tubular element ( 20 ) after the casting process in the main body ( 10 ) and wherein the pipe element ( 20 ) a continuous line in the main body ( 10 ) trains. A method according to claim 9, characterized in that when arranging the tubular element ( 20 ) in the mold between the line outlet ( 22 ) and / or the line input ( 21 ) and a surface of the at least one casting core and / or a surface of the casting mold a melt-sealed contact is made. Method according to claim 9 or 10, characterized in that the line output ( 22 ) and / or the line input ( 21 ) are reversibly sealed prior to introduction of the melt into the mold. Method according to one of claims 9 to 11, characterized in that by the method a basic body ( 10 ) for an engine block element ( 1 ) is produced according to one of claims 1 to 8. Internal combustion engine ( 40 ) with at least one engine block element ( 1 ), the engine block element ( 1 ) comprising a base body ( 10 ) and a cooling distribution system ( 5 ), whereby in the basic body ( 10 ) Cavities ( 11 ) for a first branch ( 6 ) of a cooling distribution system ( 5 ) of the engine block element ( 1 ) arranged and the cooling distribution system ( 5 ) of the engine block element ( 1 ) a second branch ( 7 ), wherein at least one cooling area with high temperature load of the engine block element ( 1 ) through the second branch ( 7 ) of the cooling system is coolable, and further wherein the second branch ( 7 ) a bypass section ( 8th ) for conducting a cooling liquid ( 30 ) to this at least one cooling area with high temperature load of the engine block element ( 1 ), bypassing that for the first branch ( 6 ) used cavities ( 11 ) in the main body ( 10 ) having. Internal combustion engine ( 40 ) according to claim 13, characterized in that the bypass section ( 8th ) at least in sections inside the at least one engine block element ( 1 ) is arranged and / or that the bypass section ( 8th ) at least in sections outside the at least one engine block element ( 1 ) and / or the first branch ( 6 ) and the second branch ( 7 ) of the cooling distribution system ( 5 ) are connected in a fluid-communicating manner. Internal combustion engine ( 40 ) According to claim 13 or 14, characterized in that the (at least an engine block member 1 ) according to one of claims 1 to 8, wherein in particular the at least one tubular element ( 20 ) at least a part of a second branch ( 7 ) of the cooling distribution system ( 5 ). Internal combustion engine ( 40 ) according to one of claims 13 to 15, characterized in that the basic body ( 10 ) of the at least one engine block element ( 1 ) is produced using a method according to any one of claims 9 to 12.

Images