EP1190165B1 - Liquid cooled internal combustion engine - Google Patents

Description

The invention relates to a liquid-cooled, in particular water-cooled Internal combustion engine, in particular a water-cooled diesel engine after the The preamble of claim 1 (see EP-A-0 675 269).

In liquid-cooled internal combustion engines higher power, such as large-volume Diesel engines for stationary use or for use in agricultural or Maritime vehicles are used to cool the internal combustion engine and its auxiliary equipment such as Intercoolers or similar a number of trained in the internal combustion engine and various cooling liquid leading cooling circuits of the internal combustion engine associated cooling channels and one or more liquid cooler for cooling in the Cooling circuits guided cooling liquid provided.

Depending on the intended use of the internal combustion engine and possibly depending on different possible power levels of the same basic engine, it is desirable to configure the cooling circuits of the internal combustion engine in different ways with one or more liquid coolers. For this it is either necessary to work differently parts of the housing of the internal combustion engine according to the different cooling circuit configurations or vorzuhalten different flow-leading additional housing for the cooling liquid for optional attachment to the internal combustion engine. This means great effort in the production of the internal combustion engine and storage.
The object of the invention is to specify an internal combustion engine in which cooling circuits and liquid coolers can be configured differently in a simple manner.

This object is achieved by the internal combustion engine specified in claim 1.

Advantageous embodiments of the internal combustion engine according to the invention are in the Subclaims characterized.

The invention provides a liquid-cooled, in particular water-cooled Internal combustion engine, in particular a water-cooled diesel engine, in which a number of in the internal combustion engine and various one Coolant leading cooling circuits associated with the internal combustion engine Cooling channels and one or more liquid cooler for cooling in the Cooling circuits guided cooling liquid are provided. According to the invention has the Internal combustion engine over a number of those in the internal combustion engine trained and the various cooling circuits associated cooling channels in Compound having first flow cross-sections exhibiting Coolant housing and a number of with the liquid cooler or in Compound standing second flow cross-sections having distributor housing. In this case, the first formed in the cooling liquid guide housing Flow cross-sections and formed in the distributor housing second Flow cross sections at mutually corresponding surfaces of the Coolant guide housing, or the distributor housing formed and each other in the sense of producing various possible flow connections between the Cooling circuits of the internal combustion engine and the one or more liquid coolers assigned. Furthermore, a between the Kühlflüssigkeitsführungsgehäuse and the Distributor housing arranged intermediate element provided which a number of a particular one of several possible configurations of the cooling circuits of the Internal combustion engine and the one or more liquid coolers corresponding flow connections between the im Coolant guide housing formed first flow cross-sections and the in the distributor housing formed second flow cross-sections producing free Having passage cross sections and other possible flow connections between the first and second flow cross sections blocked. This intermediate element is from a number of different possible configurations of the cooling circuits and Liquid chillers correspond to different arrangements of free ones Through-cross sections having interchangeable Intermediate elements selected.

A major advantage of the internal combustion engine according to the invention is that with only few components, several different configurations of cooling circuits and Liquid coolers are feasible. Another advantage is that even at an already installed internal combustion engine in the case of a power increase or modification a Cooling circuit configuration can be replaced by another.

According to a preferred embodiment of the invention, it is provided that the mutually corresponding surfaces of the cooling liquid guide housing and the Distributor housing are each flat surfaces, and that the intermediate element as plane-parallel element formed and between the flat surfaces of the Coolant guide housing and the distributor housing is arranged.

This is preferably developed such that the mutually corresponding planes Surfaces of the cooling liquid guide housing or the distributor housing the same Shape and size have that assigned to each other in the Coolant guide housing formed first flow cross sections and in the Distributor housing formed second flow cross-sections each other opposite in the mutually corresponding flat surfaces of the Coolant guide housing or the distributor housing are arranged, and that the Intermediate element as a plane-parallel plate with the free passage cross-sections forming Recesses is formed, wherein the recesses each flow connections between opposite flow cross sections of Release coolant duct housing and distributor housing. The advantage this is the simple and inexpensive manufacturability of the intermediate element as plane-parallel plate and a small footprint of the thus created arrangement.

According to a preferred embodiment, the corresponding ones flat surfaces of the cooling liquid guide housing or the distributor housing a in essential rectangular basic shape, this rectangular basic shape respectively in the Kühlflüssigkeitsführungsgehäuse formed first flow cross sections or in the Distributor housing formed second flow cross sections.

Preferably, the first formed in the cooling liquid guide housing form Flow cross-sections and formed in the distributor housing second Flow cross sections each have a matrix-like arrangement of Flow cross sections with smaller rectangular basic shape or with rectangular Basic forms of composite flow cross sections.

According to a preferred embodiment of the invention in the intermediate element formed recesses in the sense of influencing the passage cross-section between the first formed in the cooling liquid guide housing Flow cross sections and formed in the distributor housing second Flow cross sections the same or a smaller cross section than the first or second flow cross sections.

According to an embodiment thereof, the recesses of the intermediate element have the same shape and size as the first and second flow cross-sections.

According to an alternative embodiment, the recesses of the intermediate element smaller than the first and second flow cross sections and have a rectangular or a circular cross-section.

In the following an embodiment of the invention will be explained with reference to the drawing.

Figur 1

eine Draufsicht (Figur 1a)) bzw. eine teilweise Querschnittsansicht (Figur 1b)) eines ein Kühlflüssigkeitsführungsgehäuse, ein Zwischenelement und ein Verteilergehäuse enthaltenden Teils einer Brennkraftmaschine gemäß einem Ausführungsbeispiel der Erfindung; und

Figur 2

eine Ansicht des in Figur 1b) zu sehenden Verteilergehäuses in der mit Pfeil B bezeichneten Blickrichtung (Figur 2a)), sowie drei Ansichten von entsprechend unterschiedlichen Konfigurationen von Kühlkreisläufen und Flüssigkeitskühlern ausgebildeten Zwischenelementen (Figuren 2b) bis d)).

Show it:

FIG. 1

a plan view (Figure 1a)) and a partial cross-sectional view (Figure 1b)) of a cooling liquid guide housing, an intermediate element and a distributor housing containing part of an internal combustion engine according to an embodiment of the invention; and

FIG. 2

a view of the distributor housing seen in Figure 1b) in the direction indicated by arrow B (Figure 2a)), as well as three views of correspondingly different configurations of cooling circuits and liquid chillers formed intermediate elements (Figures 2b) to d)).

Figure 1a) and b) show in the view or in cross section Coolant guide housing 1 and a distributor housing 3 as components of a liquid-cooled internal combustion engine, in particular a water-cooled Diesel engine. In the internal combustion engine, what in FIG. 1a) is represented by dashed lines is shown, a number of different a coolant leading Cooling circuits associated cooling channels formed. Furthermore, for the Internal combustion engine one or more liquid cooler for cooling in the Cooling circuits guided cooling liquid provided, which in the figure, however, not are shown.

The cooling liquid guide housing 1 has a number of those in the Internal combustion engine trained and the various cooling circuits assigned Cooling channels in connection first flow cross-sections 4, which in Figure 1a) and b) can be seen.

As can be seen from FIG. 1 b) and FIG. 2 a), which shows a view of the distributor housing 3 in the viewing direction indicated B in FIG. 1 b), the distributor housing 3 has a number of second flow cross sections 6 which are in communication with the liquid cooler (s) ,
As a common consideration of Figure 1a) and Figure 2a) shows, the first flow cross sections 4 and the second flow cross sections 6 at mutually corresponding surfaces 7, 8 of the cooling liquid guide housing 1 and der Verteilergehäuses 3 ausgebildet. The formed in the Kühlflüssigkeitsführungsgehäuse 1 first flow cross section 4 and formed in the manifold housing 3 second flow cross sections 6 are each arranged and associated with each other that the production of various possible flow connections between the cooling circuits of the internal combustion engine and the liquid or the chillers is possible.

Furthermore, an intermediate element 2 is provided, which between the Coolant guide housing 1 and the distributor housing 3 is arranged and which can be seen in Figure 1b in cross-section and in Figures 2b) to d) in the view is. The intermediate element 2 has a number of flow connections between the first formed in the cooling liquid guide housing 1 first Flow cross-sections 4 and formed in the distributor housing 3 second Flow cross sections producing free Druchgangsquerschnitte 5, 5 '. The by the free passage cross sections 5, 5 'correspond to produced flow connections a particular one of several possible configurations of the cooling circuits of the Internal combustion engine and the one or more liquid coolers. Other possible flow connections between the first and second Flow cross sections 4, 6 in the cooling liquid guide housing 1 and in Distributor housing 3 are blocked by the intermediate element 2.

As the figures 2b) to d) show, the intermediate element 2 is one of a number of different intermediate elements 2, the various possible configurations of Cooling circuits and liquid cooler corresponding different arrangements of have free Druchgangsquerschnitten 5, 5 'and are interchangeable. So For example, in an internal combustion engine with liquid-cooled Intercooler shown in Figure 2b) intermediate element 2 of a configuration in which the cooling circuit of the intercooler is integrated in the engine cooling circuit, the intermediate element 2 'shown in Figure 2c) may correspond to a configuration in the coolant of the intercooler and the coolant of the Engine cooling circuit can be mixed, and that shown in Figure 2d) Intermediate element 2 "may correspond to a configuration in which the engine cooling circuit and the charge air cooling circuit are hermetically separated.

As a common consideration of Figure 1a) in connection with Figure 1b) are shown the mutually corresponding surfaces 7, 8 of the cooling liquid guide housing. 1 and the distributor housing 3 each flat surfaces, and the intermediate element 2 is as a plane-parallel element formed between the flat surfaces 7, 8 of the Coolant guide housing 1 and the distributor housing 3 is arranged. The mutually corresponding flat surfaces 7, 8 of the Coolant guide housing 1 and the distributor housing 3 have the same shape and size and the associated first flow cross sections 4 and second Flow cross sections 6 in the cooling liquid guide housing 1 and in the distributor housing 3 are arranged opposite one another in these surfaces 7, 8. The Intermediate element 2 is a plane-parallel plate with the free passage cross-sections. 5 forming recesses provided, wherein the recesses 5 each Flow connections between opposite flow cross sections 4, 6 of the cooling liquid guide housing 1 and the distributor housing 3 release. As can be seen, have the corresponding flat surfaces 7, 8 of the Coolant guide housing 1 and the distributor housing 3 is a substantially rectangular basic shape, each of the first flow cross sections 4 and the second Contains flow cross sections 6.

As the respective views in FIG. 1 a) and FIG. 2 a) show, in FIG Coolant guide housing 1 provided first flow cross-sections 4 and the in the distributor housing 3 provided second flow cross sections 6 each one matrix-like arrangement of flow cross-sections, each having a smaller rectangular basic shape or one composed of rectangular basic shapes Have shape. Thus, those in FIG. 1 a) can be seen in the coolant housing 1 formed first flow cross-sections 4, and 4, a rectangular basic shape, while the flow cross-section 4, one of smaller rectangular basic shapes has composite form.

As a comparison of the views in FIGS. 1 a) and 2 a) shows, the shape and size of the first flow cross sections 4 in the liquid guide housing 1 correspond either to the shape and size of the second flow cross sections 6 of the distributor housing 3 or to a specific cross section of a first flow cross section 4 in the liquid guide housing 1 For example, corresponds to shape, size and arrangement of the first flow cross-section 4, the Kühlflüssigkeitsführungsgehäuses 1 the shape, size and arrangement of the second flow cross-section 6 _{12 of} the distributor housing 3 (for the sake of simplicity, be from a mirror image of the correct page Views in Figure 1a) and 2 assumed). In contrast, the first flow cross-section 4, in the cooling liquid guide housing 1, corresponds in shape, size and arrangement to the two second flow cross sections 6 ₁ and 6 _{2 of} the distributor housing 3. The first flow cross section 4 _{3 of} the coolant guide housing finally corresponds in shape, size and arrangement to the second flow cross sections 6 ₅ 6 ₆ , 6 _{7 of} the distributor housing 3, etc.

As the views of the different intermediate elements 2, 2 ', 2 "in Figures 2b) to d) in conjunction with the views of the cooling liquid guide housing 1 and the manifold housing 3 in Figure 1a) and Figure 2a) show, the first flow cross sections 4 and the second flow cross sections 6 in the cooling liquid guide housing 1 or in the distributor housing 3 are connected to each other differently by the free passage cross sections or recesses 5 of the intermediate element 2. Thus the recess 5 _{12 of} the intermediate element 2 (FIG. 2b) connects and the recess 5 ₁₂ "of the intermediate element 2 "(FIG. 2 d)) the first flow cross-section 4 _{7 of} the coolant-carrying housing 1 with the second flow cross-section 6 _{12 of} the distributor housing 3, while these two flow cross-sections 4 ₇ and 6 ₁₂ are separated from one another by the intermediate element 2 'shown in FIG. 2 c) Flow cross section 4 ₃ of Kühlflüssigkeitsfüh The housing 1 is connected by the intermediate element 2 shown in FIG. 2 b via the recess 5 ₅ to the second flow cross-section 6 ₅ and through the recesses 5 ₆ to the second flow cross-section 6 _{6 of} the distributor housing 3. By the method shown in Figure 2c) intermediate element 2 'of the first flow cross-section of the cooling liquid guide housing 1 ₅ 4 ₃ over the recess 5''connected to the second flow cross-section 6 ₅ and over the recess 5 ₇ with the second flow cross-section 6 ₇ of Verteifergehäuses. 3 By means of the intermediate element 2 "shown in FIG. 2d), the first flow cross section 4 _{3 is} connected via the recesses 5 ₆ " only to the second flow cross section 6 _{6 of} the distributor housing 3. By the recesses or free Druchgangsquerschnitte 5 of the intermediate element 2 so the first flow cross sections 4 of the Kühlflüssigkeitsführungsgehäuses 1 and the second flow cross sections 6 are optionally connected in coded manner or separated, so that different configurations of circuits between the cooling channels of the cooling circuits of the internal combustion engine and the or the liquid coolers are possible.

The measures provided for in the intermediate element 2 recesses 5 can in the sense of Influence of the passage cross section between the in Coolant guide housing 1 formed first flow cross sections 4 and the second flow cross sections 6 formed in the distributor housing 3 the same or a smaller cross section than the first and second flow cross sections 4, 6 to have. That is, the recesses 5 of the intermediate element 2 can have the same shape and size as the first and second flow sections 4, 6, respectively, or in the case a transition from a larger to a smaller flow cross section, the same shape and size as the smaller of this. Then the passage cross section maximum possible and the flow resistance so minimal. On the other hand, the Recesses 5 of the intermediate element smaller than the first and second Flow cross-sections 4, 6, or in the case of a transition from a larger Flow cross-section to a smaller flow area, smaller than the smaller one Flow cross section, so that a larger flow resistance is achieved. The Recesses 5 may have a rectangular or a circular cross-section, in particular, in the case of small passage cross-sections are circular Cross sections, as they are denoted in Figure 2b) to d) by the reference numeral 5 '.

LIST OF REFERENCE NUMBERS

1

Cooling liquid guide housing

2

intermediate element

3

distributor housing

4

first flow cross sections

5

free passage cross sections

6

second flow cross sections

7

Surface of the coolant guide housing

8th

Surface of the distributor housing

Claims (8)

1. Liquid-cooled, in particular water-cooled internal combustion engine, in particular water-cooled diesel engine, having a number of cooling ducts which are formed in the internal combustion engine and are assigned to various cooling circuits of the internal combustion engine which conduct a cooling liquid, and one or more liquid coolers for cooling the cooling liquid conducted in the cooling circuits, characterized by a cooling liquid conducting housing (1) which has.a number of first flow cross sections (4) which are connected to the cooling ducts which are formed in the internal combustion engine and are assigned to the various cooling circuits, and a distributor housing (3) which has a number of second flow cross sections (6) which are connected to the liquid cooler or coolers, the first flow cross sections (4) and the second flow cross sections (6) being formed on faces (7, 8), which correspond to one another, of the cooling liquid conducting housing (1) or of the distributor housing (3), and being assigned to one another in order to form various possible flow connections between the cooling circuits of the internal combustion engine and the liquid cooler or coolers, and an intermediate element (2) which is arranged between the cooling liquid conducting housing (1) and the distributor housing (3) and which has free passage cross sections (5) which form a number of flow connections corresponding to a specific configuration, of a plurality of possible configurations, of the cooling circuits of the internal combustion engine and to the one or more liquid coolers, between the first flow cross sections (4) formed in the cooling liquid conducting housing (1), and the second flow cross sections (6), formed in the distributor housing (3), and said intermediate element (2) closes off other possible flow connections between the first and second flow cross sections (4, 6), the intermediate element (2) being selected from a number of interchangeable intermediate elements (2) which have different arrangements of free passage cross sections (5), which arrangements correspond to various possible configurations of the cooling circuits and liquid coolers.
2. Internal combustion engine according to Claim 1, characterized in that the faces (7, 8), which correspond to one another, of the liquid conducting housing (1) and of the distributor housing (3) are each planar faces, and in that the intermediate element (2) is embodied as a plane-parallel element and is arranged between the planar faces (7, 8) of the cooling liquid conducting housing (1) and of the distributor housing (3).
3. Internal combustion engine according to Claim 2, characterized in that the planar faces (7, 8), which correspond to one another, of the cooling liquid conducting housing (1) and of the distributor housing (3), respectively, are of the same shape and size, in that the first flow cross sections (4), which are formed in the cooling liquid conducting housing (1) and the second flow cross sections (6) which are formed in the distributor housing (3), which are assigned to one another are arranged opposite one another in the planar faces (7, 8), which correspond to one another, of the cooling liquid conducting housing (1) and of the distributor housing (3), respectively, and in that the intermediate element (2) is embodied as a plane-parallel plate with cut-outs forming the free passage cross sections (5), the cut-outs (5) each clearing flow connections between flow cross sections (4, 6), lying opposite one another, of the cooling liquid conducting housing (1) and of the distributor housing (3).
4. Internal combustion engine according to Claim 3, characterized in that the planar faces (7, 8), which correspond to one another, of the cooling liquid conducting housing (1) and of the distributor housing (3), respectively, have an essentially rectangular basic shape which in each case contains the first flow cross sections (4) which are formed in the cooling liquid conducting housing (1) and the second flow cross sections (6) which are formed in the distributor housing (3), respectively.
5. Internal combustion engine according to Claim 4, characterized in that the first flow cross sections (4) formed in the liquid conducting housing (1) and the second flow cross sections (6) formed in the distributor housing (3) each form a matrix-like arrangement of flow cross sections with a relatively small rectangular basic shape or with flow cross sections which are composed of rectangular basic shapes.
6. Internal combustion engine according to Claim 3, 4 or 5, characterized in that the cut-outs (5) which are formed in the intermediate element (2) have, in order to influence the passage cross section between the first flow cross sections (4) formed in the liquid conducting housing (1) and the second flow cross sections (6) formed in the distributor housing (3), the same cross section as or a smaller cross section than the first and second flow cross sections (4, 6).
7. Internal combustion engine according to Claim 6, characterized in that the cut-outs (5) of the intermediate element (2) have the same shape and size as the first and second flow cross sections (4, 6).
8. Internal combustion engine according to Claim 6, characterized in that the cut-outs (5) of the intermediate element (2) are smaller than the first and second flow cross sections (4, 6) and have a rectangular cross section or a circular cross section.

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