Oil consumption system

Abstract

The invention relates to an oil consumption system having at least one rotating component and at least one oil supply from an oil tank, wherein the oil consumption system has an oil return to a first oil tank and an oil supply via at least one second oil tank.

Description

[0001] This application is a divisional application of patent application No. 201980036179.7, filed on April 29, 2019, entitled "Oil Consumption System". Technical Field

[0002] The present invention relates to an oil consumption system having at least one rotating component and at least one oil supply unit from an oil tank. Background Technology

[0003] Oil is a crucial component in many oil-consuming systems, such as clutch systems. It serves for cooling and lubrication. Several operating characteristics of a clutch system are directly related to the material properties of the oil. Thus, oil density, temperature-dependent viscosity, compatibility with different materials in the system, air separation capacity, and tendency to form foam are particularly important oil characteristics.

[0004] This typically causes a problem where the oil circulation time in the oil-consuming system is very short. This means the average residence time of the oil in the reservoir is too short to expel the free air additionally absorbed into the oil. This high proportion of undissolved air causes the oil to foam. If the oil-air mixture is used for cooling and lubrication, other problems may arise in the clutch system. The cooling aspect of using hot oil afterward must also be considered.

[0005] A typical oil-consuming system is the clutch system, in which hot, foamy oil ejected by the clutch is collected in the oil pan and then transported back to the point of use via appropriate lines and orifices.

[0006] A clutch system with two separate clutches is known from WO 2013045445 A1. To avoid drag losses of rotating parts in the oil, the oil level in the sump is maintained at a very low level. The oil used for the clutches is raised to a higher level via a disc gear. The clutches are lubricated via oil delivery channels. Summary of the Invention

[0007] The object of this invention is to provide an oil consumption system that minimizes the problem of hot, foaming oil, thereby avoiding drag losses in the oil.

[0008] The objective is achieved by means of an oil consumption system having at least one rotating component and at least one oil supply section from an oil tank, wherein the oil consumption system has an oil return section to a first oil tank and an oil supply section via at least one second oil tank.

[0009] Because it uses at least two tanks, the foaming oil does not contain cracked gases and can be cooled better.

[0010] Implement at least one dual-chamber system. The oil consumer supplies oil from a second oil tank. This oil is pre-cooled and as air-free as possible.

[0011] Importantly, the first fuel tank is connected to the second fuel tank via a connection located as close as possible to the bottom. This allows most of the air to be separated from the first fuel tank. In the second fuel tank, the fuel has the potential to be completely degassed.

[0012] Advantageously, the first and second oil tanks each have an exhaust mechanism. The connection of at least two exhaust-equipped oil tanks at the lowest point enables rapid degassing of the air-oil mixture.

[0013] Advantageously, the oil supply line guides the oil to a first level, wherein at least the second tank has an elevated second level. This enables oil supply solely through the pressure differential between the tank and the oil consumer.

[0014] In one implementation, the oil level in the first oil tank corresponds to the oil level in the second oil tank, which can be achieved by appropriately selecting the size of the closure and the size of the connection.

[0015] In an alternative implementation, the oil level in the second tank may be higher or lower than the oil level in the first tank, which is achieved by adjusting the dimensions of the connection.

[0016] The solution according to the invention enables increased oil inflow and better cooling of the clutch components because less foaming oil is circulating. This allows for a reduction in structural space and flow cross-section, as only oil, not an oil-air mixture, is transported. Rapid degassing of the oil is achieved through the combination of oil tanks.

[0017] The invention is particularly advantageous for clutches because a very large amount of air is introduced into the oil through the rotation of rotating components, such as by a chain, or by the rotation of a clutch housing or a rotating shaft or wheel. Attached Figure Description

[0018] The only accompanying drawing exemplifies the oil consumption system 1. In the selected embodiment, a clutch device 2, as known from the prior art, is shown here. The clutch device 2 is mounted in the first housing component 20a. Detailed Implementation

[0019] This relates to a wet diaphragm clutch, which is supplied with oil via an oil supply section 12. Oil is delivered to the clutch diaphragm carrier via a suitable oil supply port 14, which is indicated by an arrow in the figure.

[0020] As the clutch rotates, oil is thrown out at the highest point of the clutch and delivered to the return oil section 11. An oil guiding device, as already known, can also be used here. The oil guiding device is schematically shown in the accompanying drawings and can represent a return line guided within the housing 20a or a separate return line also located outside the housing 20a. The return oil line 11 leads into the first oil tank 4, where the air-oil mixture deposits. As shown, air 7 separates from oil droplets 8. The rising air 7 escapes via the first venting mechanism 9. Here, an oil level 6a is formed in the first oil tank. The first oil tank 4 is connected to the second oil tank 5 via a connection 13. The connection 13 is sized such that oil can flow from the first oil tank to the second oil tank in a manner sufficient for supplying the clutch mechanism. In the second oil tank, the amount of air carried along with the mixture has been significantly reduced, allowing the oil-air mixture to continue expanding and the air to escape via the second venting mechanism 10. A second oil level 6b is formed, which may correspond to the first oil level 6a, or may be lower or higher than the first oil level 6a. Oil flows into the oil supply section 12 via the second oil tank 5 near the bottom.

[0021] The oil supply to the oil consumer and clutch system 2 is maintained at level N1 compared to the position of the oil supply to the consumer due to the pressure of the liquid column in the second oil tank 5 with level N2.

[0022] In the exemplary embodiment, the first oil tank 4 and the second oil tank 5 are installed next to the housing 20a of the oil consumer, i.e., the clutch 2. However, it is also conceivable that different oil tank volumes and oil consumers are combined into an oil consumption system within a common housing 20.

[0023] In this embodiment, the first exhaust mechanism 9 and the second exhaust mechanism 10 are configured as separate openings. However, it is also possible to consider an embodiment in which the first fuel tank exhausts into the second fuel tank and the common exhaust is guided outward.

[0024] List of reference numerals

[0025] 1. Fuel Consumption System

[0026] 2. Clutch equipment

[0027] 3 shells

[0028] 4 First fuel tank

[0029] 5. Second fuel tank

[0030] 6 oil level

[0031] 7 air

[0032] 8 oil droplets

[0033] 9 First exhaust mechanism

[0034] 10 Second exhaust mechanism

[0035] 11 Return Oil Section

[0036] 12 Oil Supply Department

[0037] 13 Connecting parts

[0038] 14 oil supply holes

[0039] 20 housing

[0040] 20a oil consumer housing

[0041] N1, N2 liquid levels

Claims

1. An oil consumption system (1) having at least one rotating component and at least one oil supply unit from an oil tank, characterized in that, The oil consumption system (1) has an oil return section (11) to a first oil tank (4) and an oil supply section (12) via at least one second oil tank (5).

2. The oil consumption system (1) according to claim 1, characterized in that, The first oil tank (4) and the second oil tank (5) are connected via a connecting part (13) located as far as possible at the bottom of the tank.

3. The oil consumption system according to claim 1 or 2, characterized in that, The first and second oil tanks (4, 5) have first and second exhaust mechanisms (9, 10), respectively.

4. The oil consumption system (1) according to any one of the preceding claims, characterized in that, The oil supply line (12) guides the oil up to the first level (N1), wherein at least the second oil tank (5) has an increased second level (N2, 6b).

5. The oil consumption system according to any one of the preceding claims, characterized in that, The oil level (6a) in the first oil tank (4) corresponds to the oil level (6b) in the second oil tank (5).

6. The oil consumption system (1) according to any one of the preceding claims, characterized in that, The oil level (6b) in the second oil tank is higher or lower than the oil level (6a) in the first oil tank (5).

7. The oil consumption system (1) according to any one of the preceding claims, characterized in that, The oil consumption system is the clutch system (2).

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