Function module for one engine

Abstract

Functional module (1) for an engine, wherein the functional module has a coolant inlet and a coolant outlet, wherein the functional module (1) can be connected on the one hand to an engine housing and on the other hand to an add-on element (4, 14), wherein the functional module (1) forms a carrier function for the add-on element (4, 14) and a line function for the coolant inlet (2) and the coolant outlet (3), wherein the coolant inlet (2) and the coolant outlet (3) are not directly operatively connected to the add-on element (4, 14), and wherein the functional module (1) is designed in one piece and has openings (7, 8, 9) and struts (10, 11, 12, 13), characterized in that the add-on element (4, 14) is designed as a charge air cooler (4) and / or as an exhaust gas recirculation module (14) and that the struts (10, 11, 12, 13) are designed such that the natural frequency or the 1.Natural frequency of the functional module (1) with its attachment(s) is set so high that it is above the engine speed of the engine.

Description

The invention relates to a functional module for a motor, wherein the functional module has a coolant inlet and a coolant outlet.DE 10 2007 049 336 A1 discloses a multifunction module through which coolant is guided. Furthermore, an exhaust gas recirculation cooler can also be fastened. This module is of complex construction and serves for regulating the exhaust gas flow.DE 60 2005 004 579 T2 discloses a multifunction module through which a coolant circuit is guided. This coolant circuit is a circulation circuit in which the hollow body is integrated. Furthermore, components for regulating the circuit are integrated.From the generic DE 10 2006 026 656 A1, a functional module for an engine or an internal combustion engine is known, which has a coolant inlet and a coolant outlet, can be connected on the one hand to a motor housing and on the other hand to an add-on element, and forms a carrier function for the add-on element and a line function for the coolant inlet and coolant outlet, wherein the coolant inlet and coolant outlet are not directly operatively connected to the add-on element, and wherein the functional module is formed in one piece and has openings and struts.EP 1 375 896 A2 discloses a modular air intake duct system for an internal combustion engine, which has a distributor plate to which components such as throttle flap connections, exhaust gas recirculation valve and exhaust gas cooler can be connected and are integrated into the ducts for the guidance of exhaust gas.The invention is based on the object of creating a space-saving connection between motor and add-on elements. This object is achieved by the features of the invention specified in the independent claims. Advantageous refinements of the invention are specified in the dependent claims.Starting from a functional module for an engine, wherein the functional module has a coolant inlet and a coolant outlet, wherein the functional module can be connected on the one hand to an engine housing and on the other hand to an add-on element, wherein the functional module forms a carrier function for the add-on element and a line function for the coolant inlet and coolant outlet, wherein the coolant inlet and coolant outlet are not directly operatively connected to the add-on element, and wherein the functional module is formed in one piece and has openings and struts, the stated object is achieved in that the add-on element is formed as a charge air cooler and / or exhaust gas recirculation module and in that the struts are formed in such a way that the natural frequency or 1st natural frequency of the functional module is set with its add-on element(s) high enough that it lies above the engine speed of the engine.It is advantageous in the functional module according to the invention that the module is of simple and compact construction, add-on elements can be attached to the functional module and are not directly operatively connected to the latter. An indirect connection is provided since the coolant is guided through at least one add-on element in the circulation process, so that, on the one hand, a simple construction of the functional module is thus provided, and, on the other hand, a holding function is provided to the add-on elements. Furthermore, the one-piece configuration of the functional module allows the functional module to be produced using a simple production method. The functional module is preferably produced by an Alu die casting process. At areas where high accuracy is required, such as bonding and transition areas, mechanical post-processing takes place. Due to the fact that the natural frequency or the 1st natural frequency of the functional module having a holding function with its add-on parts is set so high that it lies above the motor speed of the motor, no resonance oscillations can occur. Furthermore, a part of the heat-which arises in the cylinder head-is dissipated via the functional module.Unlike in the prior art, in which the coolant is used directly by the add-on parts, the functional module according to the invention is constructed such that the coolant is guided at an almost right angle. As a result, the coolant can be guided in a functionally effective manner in the narrowest installation space. An additional angle guidance therefore does not have to be installed.The functional module is further characterized in that the coolant inlet on the engine housing is connected to a cylinder head and thus the coolant is guided from the cylinder head through the functional module to a surge tank and / or to the exhaust gas recirculation module. Due to the connection of the coolant inlet to the motor housing, it is not necessary to install a further line as a connection. A more compact construction is thus possible. Furthermore, it is thus possible in a simple, compact manner to vent the cylinder head via the compensating container.A groove is provided in the functional module in the transition region to the cylinder head. A rubber sealing ring is inserted into this groove in order to thus connect both elements in an operable and sealing manner. At this point, the coolant is transferred from the cylinder head to the functional module on the engine side.Furthermore, in the functional module, a coolant connection piece is pressed onto the stop at the coolant outlet and glued. Because the coolant connection is pressed in onto the stop and glued together, the coolant outlet is firmly connected to the functional module. It is therefore not necessary here to introduce further connecting elements. A coolant hose can thus be connected to the functional module. While on the one hand the coolant hose is connected to the functional module, on the other hand it is connected to an exhaust gas recirculation module as an add-on element. In terms of production, this pressing-in and bonding offers the advantage that no mechanical post-processing is necessary at this position, since the coolant connection has previously been produced to the appropriate size.The functional module also has a transport tab. The transport plate has the advantage that the functional module is transported more easily and reliably from production step to production step in a production chain. Furthermore, the motor can also be raised or transported via this transport lug during production and service. Due to the integration of the transport tab into the functional module, no separate transport tab is required.The coolant inlet, which accepts the coolant from the engine, is connected to the engine in a functionally sealed manner by the coolant seal arranged there. At this point, the coolant is transferred from the cylinder head to the functional module on the engine side.Furthermore, a better heat dissipation takes place via the functional module than in the case of previous plastic connections. Due to a better thermal conductivity transition coefficient of Alu, the heat is dissipated from the engine better with the functional module than is the case with a plastic coolant connection. Furthermore, the surface area of the functional module is larger than in the case of a conventional plastic connection. These merely serve as a connection between the motor and the coolant hose and are not designed as functional modules. Via openings and braces, the heat is absorbed by the functional module and dissipated to the environment and / or add-on parts. Due to the larger cross section in the vicinity of the engine, the coolant pressure does not have such an adverse effect on the seal related there. Thus, the system is more pressure-proof at this location which is later not as easily accessible. A thinner seal than otherwise necessary can thus also be installed in order to achieve the same tightness.Furthermore, the transport flap is integrated. Thus, the cost in this range is optimized.The invention is explained below with reference to the drawings using several exemplary embodiments. The drawing shows FIG. 1 shows a side view of the functional module according to the invention, FIG. 2 shows a side view of the functional module according to the invention with an exhaust gas recirculation module, and FIG. 3 shows a side view of the functional module according to the invention with charge air cooler.In FIG. 1, the functional module 1 is shown in a side view. The functional module 1 has openings 7, 8, 9 and struts 10, 11, 12, 13. By the combination of openings and struts, the functional module is designed to be lighter on the one hand and more structurally stable on the other hand.The functional module 1 has a coolant inlet 2 and a coolant outlet 3. The coolant outlet 3 is pressed in and glued onto the stop as a coolant connection 16. Thus, no additional connecting element is necessary for the coolant outlet 3 in order to guide the coolant liquid from the coolant inlet 2 to the coolant outlet 3. The coolant inlet 2 is provided with a seal 17. The coolant inlet 2 is connected to an engine housing, preferably a cylinder head, which is not shown. Via screw connection points M 1 to M 8, the functional module 1 is connected to the motor, not shown here. A transport flap 15 is provided in order to be able to reliably handle and transport the functional module 1 in the production stage. Furthermore, the motor can be raised or transported via this transport lug 15 during production and service. As a result of the integration of the transport tab 15 into the functional module, no separate transport tab is therefore necessary.The functional module 1 according to the invention guides the coolant at an almost right angle from the coolant inlet 2 to the coolant outlet 3. An additional angle guidance therefore does not have to be installed.Furthermore, a cross-sectional narrowing takes place between coolant inlet 2 and coolant outlet 3. Thus, the cooling water is guided on the engine side from a larger inlet cross section Q 1 to a remote smaller outlet cross section Q 2. Via openings 7- 9 and struts 10- 13, the temperature is absorbed by the functional module and discharged to the environment and / or add-on parts. At the coolant outlet 3, a smaller cross section Q2 will be used, to which a coolant hose is connected. This hose, not shown, is connected pressure-tightly with the aid of a hose clamp, not shown. Due to the larger cross section in the vicinity of the engine, the coolant pressure does not act so strongly on the seal 17 related there. Thus, the system is more pressure-proof at this location which is later not as easily accessible. A thinner seal than otherwise can also be installed with the same tightness.FIG. 2 shows the functional module 1 with an exhaust gas recirculation module 14 arranged as an add-on element. The exhaust gas recirculation module 14 is connected to the functional module via screw connection points M 11 to M 13. The coolant hose from FIG. 1, not shown, is connected to a coolant inlet 18. The functional module 1 can thus indirectly supply the exhaust gas recirculation module 14 with coolant via a coolant inlet 18. It is advantageous that a size of functional modules 1 can be installed according to the cooling power requirement of the exhaust gas recirculation module 14 and other sizes can be connected to exhaust gas recirculation modules with a variation of the coolant hose. Thus, corresponding to the engine power, with the same or nearly the same functional module, a different exhaust gas recirculation module can be installed. While the exhaust gas is guided from the exhaust gas inlet 19 through the exhaust gas recirculation module 14 to the exhaust gas outlet 20, the coolant reaches the coolant outlet 21 from the coolant inlet 18 in countercurrent to the exhaust gas.FIG. 3 shows the functional module 1 with a charge air cooler 4 arranged as an add-on element. The charge air cooler 4 is connected to the functional module via screw connection points M 9 to M 11.FIG. 4 shows the functional module 1 with the exhaust gas recirculation module 14, the charge air cooler 4 and the transport flap 15.It can be seen from FIGS. 1 to 4 that the functional module 1 with coolant inlet 2, coolant outlet 3 and transport plate 15 is of compact design. It is thus possible to connect add components optimized in terms of cost and installation space, such as exhaust gas recirculation module 14 and charge air cooler 4.List of reference characters1 Functional module 2 Coolant inlet 3 Coolant outlet 4 Charge air coolers 7, 8, 9 Openings 10, 11, 12, 13 Struts 14 Exhaust gas recirculation module 15 Transport plate 16 Coolant connection piece 17 Seal 18 Coolant inlet 19 Exhaust gas inlet 20 Exhaust gas outlet 21 Coolant outlet M 1 to M 11 Screw connection points Q 1 Inlet cross section Q 2 Outlet cross section

Claims

Functional module (1) for an engine, wherein the functional module has a coolant inlet and a coolant outlet, wherein the functional module (1) can be connected on the one hand to an engine housing and on the other hand to an add-on element (4, 14), wherein the functional module (1) forms a carrier function for the add-on element (4, 14) and a line function for the coolant inlet (2) and the coolant outlet (3), wherein the coolant inlet (2) and the coolant outlet (3) are not directly operatively connected to the add-on element (4, 14), and wherein the functional module (1) is formed in one piece and has openings (7, 8, 9) and struts (10, 11, 12, 13), characterized in that the add-on element (4, 14) is formed as a charge air cooler (4) and / or as an exhaust gas recirculation module (14), and in that the struts (10, 11, 12, 13) are formed in such a way, the natural frequency or the 1st natural frequency of the functional module (1) with its (n) add-on part(s) is set so high that it lies above the motor speed of the motor.Functional module (1) according to Claim 1, characterized in that the coolant inlet (2) on the engine housing is connected to a cylinder head and the coolant is thus guided from the cylinder head through the functional module to a compensation tank.Functional module (1) according to Claim 1, characterized in that the coolant is guided from coolant inlet (2) to coolant outlet (3) at an almost right angle.Functional module (1) according to Claim 1, characterized in that the coolant inlet (2) has a larger cross section than the coolant outlet (3).Functional module (1) according to Claim 1, characterized in that the coolant inlet (2) with a larger inlet cross section (Q1), at least one doubling of the inlet cross section (Q1') away, is arranged with respect to the coolant outlet (3) with a smaller outlet cross section (Q2).Functional module (1) according to Claim 1, characterized in that a transport tab (15) is arranged on the functional module (1).Functional module (1) according to Claim 1, characterized in that a coolant connection piece (16) is arranged at the coolant outlet (3).Functional module (1) according to Claim 1, characterized in that a coolant seal (17) is arranged at the coolant inlet (2).

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