Lubricating and / or cooling system for use in a motor vehicle

Abstract

The invention relates to a lubricating and / or cooling system for use in a motor vehicle, comprising a first oil container (1) having oil and a pump assembly (2) for conveying oil from the first oil container (1), a first separating device (3) being arranged in the first oil container (1), characterized in that the pump assembly (2) comprises a second separating device (4) for separating oil from the first oil container (1). The first separating device (3) is arranged in the first oil reservoir (1) at an angle to the flow direction (X) of the oil, i.e. In an inclined direction to the oil suction point (4) of the pump assembly (2), at an angle of inclination (alpha) with respect to the flow direction (X) of the oil.

Description

Technical Field

[0001] The present invention relates to a lubrication and / or cooling system for use in a motor vehicle, the lubrication and / or cooling system comprising a first oil container having oil and a pump unit for conveying oil from the first oil container, wherein a first separation device is provided in the first oil container. Background Technology

[0002] In the field of motor vehicle technology, oil-based lubrication and / or cooling systems play a central role. Especially when rotating (transmission) components come into contact with oil, foaming often occurs. This increases the air content in the oil, negatively impacting its ability to remove heat from temperature-critical active components, such as those in the transmission, because the high air content results in a lower specific heat capacity of the oil volumetric flow compared to the pure oil phase. This leads to poorer heat transfer to the oil, thus significantly reducing its cooling performance. Furthermore, the oil / air mixture has a lower density than the pure oil phase. Therefore, to achieve the same mass flow as in the case of a pure oil phase, the delivery volumetric flow of the pump used to deliver the oil must be increased. Moreover, the pump exhibits lower efficiency when delivering the oil-air mixture. Summary of the Invention

[0003] The object of this invention is to provide an improved lubrication and / or cooling system for use in motor vehicles.

[0004] The aforementioned needs can be met by the subject matter of this invention. Advantageous embodiments of the invention are described below.

[0005] The lubrication and / or cooling system according to the invention is particularly applicable to motor vehicles. However, its application in other technical fields outside of motor vehicle technology is not excluded.

[0006] According to the present invention, the lubrication and / or cooling system includes a first oil container having oil and a pump unit for conveying oil from the first oil container.

[0007] According to the present invention, a first separation device is provided in a first oil container, wherein the first separation device is provided in the first oil container in a manner inclined to the oil flow direction, that is, in a manner forming an inclined angle relative to the oil flow direction in an inclined direction toward the oil suction position of the pump unit.

[0008] The tilt angle relative to the direction of oil flow is preferably less than or equal to 60°, and especially less than or equal to 30°.

[0009] The first separation device preferably has at least one screen and / or at least one filter.

[0010] Furthermore, the first separation device may be directly, i.e., not indirectly, disposed in the first oil container, or indirectly, i.e. not directly, disposed in the first oil container in a manner that is installed in a separate structural unit.

[0011] In an advantageous implementation variant, the lubrication and / or cooling system has a second oil container, wherein the second oil container is positioned horizontally above the first oil container relative to the first oil container, and wherein oil can be delivered from the first oil container to the second oil container via a pump unit through at least one mechanical component.

[0012] Preferably, a second separation device is provided in the second oil container, wherein the second separation device is horizontally arranged above all oil outlets of the second oil container.

[0013] The second separation device has at least one screen and / or filter, and the second separation device may be directly, i.e., not indirectly, disposed in the second oil container, or indirectly, i.e. not directly, disposed in the second oil container in a manner installed in a separate structural unit.

[0014] In particular, the "tilted" or inclined-angled arrangement of the first separation device in the first oil container according to the invention allows air bubbles in the oil to be pushed "upward". Therefore, the air content in the oil is significantly reduced, thereby allowing more heat to be removed, especially from components cooled by the oil. Attached Figure Description

[0015] The invention is described below with reference to the accompanying drawings.

[0016] Figure 1 A cross-sectional view is shown for a transmission used in a motor vehicle with a lubrication and / or cooling system.

[0017] Figure 2 A variant implementation of a separate structural unit with a first separation device is shown. Detailed Implementation

[0018] exist Figure 1 The diagram schematically shows a cross-sectional view of a transmission for a motor vehicle, wherein the lubrication and / or cooling system according to the invention is an integral part of the transmission shown.

[0019] The lubrication and / or cooling system has a first oil container 1, a second oil container 5, and a pump unit 2.

[0020] The second oil container 5 is positioned horizontally above the first oil container 1 in terms of spatial arrangement, thus forming a "high-level container".

[0021] There is at least enough oil in the first oil container 1 up to the maximum liquid level.

[0022] Pump unit 2 is used to transport oil from the first oil container 1 to the second oil container 5 through multiple mechanical parts 6 and 7. Oil can flow back from the second oil container 5 to the first oil container 1 through multiple oil outlets 9 of the second oil container 5.

[0023] A first separation device 3 is provided in the first oil container 1, and a second separation device 8 is provided in the second oil container 5.

[0024] The first separation device 3 and the second separation device 8 are respectively constructed on a large scale and are directly, i.e., not indirectly, installed in the corresponding oil containers 1 and 5.

[0025] The first separation device 3 and the second separation device 8 are currently constructed using metal screens with a mesh size of approximately 0.25 mm. However, any type of filter or a screen made of plastic may also be used.

[0026] exist Figure 1 In the first separation device 3, i.e., the corresponding metal screen, it is directly and fixedly installed at least partially forming the shell 10 of the first oil container 1. The second separation device 8, i.e., the corresponding metal screen, is directly and horizontally installed in the second oil container 5 above all the oil outlets 9 of the second oil container 5, and for spatial arrangement, it is installed below the oil inlet 11 of the second oil container 5.

[0027] The first separation device 3 is installed in the first oil container 1 at an angle α relative to the oil flow direction X, that is, at an angle α relative to the oil flow direction X, in the direction of inclination towards the oil suction position 4 of the pump unit 2.

[0028] Figure 2 Showing relative to the first separation device 3 in Figure 1 The following is an alternative implementation variation of the embodiment shown. Here, the first separation device is also configured as a metal screen, however, it is installed in a separate structural unit 17. The separate structural unit 17 has a separation device housing 13 surrounding the cavity 12, the separation device housing having at least one oil inlet 14, a gas outlet 15, and a pump connection mechanism 16, wherein the first separation device 3 is fixedly disposed in the separation device housing 13 within the cavity 12.

[0029] For example in Figure 1 As shown, the individual structural unit 17 can be installed, for example, as an alternative to the first separation device 3 being directly installed in the transmission.

[0030] A fluid connection can be achieved between the first oil container 1 and the cavity 12 of the separation device housing 13 via the oil inlet 14.

[0031] Air can escape from the cavity 12 of the separation device housing 13, for example, via the gas outlet 15.

[0032] The pump connection mechanism 16 is used to directly, i.e. indirectly, or indirectly, i.e. not directly, connect the cavity 12 of the separator housing 13 to the oil suction position 4 of the pump unit 2.

[0033] The first separation device 3 is fixedly mounted in the cavity 12 of the separation device housing 13, and is positioned between the oil inlet 11 and the pump connection mechanism 16 in the oil flow direction X. The first separation device 3 is inclined to the oil flow direction X, that is, it is positioned at an angle α relative to the oil flow direction X in the direction of inclination towards the pump connection mechanism 16 of the pump unit 2 and thus towards the oil suction position 4 of the pump unit.

[0034] List of reference numerals

[0035] 1. First oil container

[0036] 2-pump unit

[0037] 3. First Separation Equipment

[0038] 4. Oil suction position (of the pump unit)

[0039] 5. Second oil container

[0040] 6,7 Mechanical components

[0041] 8. Second Separation Equipment

[0042] A tilt angle

[0043] Flow direction of X oil

Claims

1. A lubrication and / or cooling system for use in a motor vehicle, the lubrication and / or cooling system comprising a first oil container (1) having oil and a pump unit (2) for conveying oil from the first oil container (1), wherein a first separation device (3) is provided in the first oil container (1), characterized in that, The first separation device (3) is arranged in the first oil container (1) at an angle (α) relative to the flow direction (X) of the oil, i.e., at an angle of inclination relative to the flow direction (X) of the oil, in the direction of inclination toward the oil suction position (4) of the pump unit (2).

2. The lubrication and / or cooling system according to claim 1, Its features are, The tilt angle (α) relative to the flow direction (X) of the oil is ≤60°.

3. The lubrication and / or cooling system according to claim 1 or 2, Its features are, The first separation device (3) has at least one screen and / or at least one filter.

4. The lubrication and / or cooling system according to claim 1, 2 or 3, Its features are, The first separation device (3) is disposed directly, i.e., not indirectly, in the first oil container (1), or indirectly, i.e. not directly, in the first oil container (1) in a manner that is installed in a separate structural unit.

5. The lubrication and / or cooling system according to any one of the preceding claims, Its features are, The lubrication and / or cooling system has a second oil container (5), wherein the second oil container (5) is disposed at a level above the first oil container (1) relative to the first oil container (1), and wherein oil can be delivered from the first oil container (1) to the second oil container (5) via the pump unit (2) via at least one mechanical component (6, 7).

6. The lubrication and / or cooling system according to claim 5, Its features are, A second separation device (8) is provided in the second oil container (5), wherein the second separation device (8) is horizontally arranged above all oil outlets (9) of the second oil container (5).

7. The lubrication and / or cooling system according to claim 6, Its features are, The second separation device (8) has at least one screen and / or at least one filter.

8. The lubrication and / or cooling system according to claim 6 or 7, Its features are, The second separation device (8) is disposed directly, i.e., not indirectly, in the second oil container (5), or indirectly, i.e. not directly, in the second oil container in a manner that is installed in a separate structural unit.

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