A FSAE racing car oil-gas separator oil tank

Abstract

The application relates to an FSAE racing car oil-gas separator oil tank, which comprises a tank body (1) and a small oil chamber cavity (4) constituting a combination, wherein the inside of the tank body (1) is provided with a main oil chamber (11), the upper portion of the main oil chamber (11) is provided with a separator (2), the lower portion of the main oil chamber (11) is provided with an oil guiding unit (3), the inside of the small oil chamber cavity (4) is provided with a small oil chamber (12), and the oil guiding unit (3) guides oil from the main oil chamber (11) to the small oil chamber (12) below the main oil chamber (11). Compared with the prior art, the application has the advantages of compact structure, space saving, convenient arrangement, continuous and stable oil absorption, high oil-gas separation rate, system light weight and the like.

Description

Technical Field

[0001] This invention belongs to the field of FSAE Formula racing technology and relates to an oil tank for an FSAE racing oil-gas separator. Background Technology

[0002] Formula Student Auto Racing (FSAE) is a student-run Formula 1 competition entirely designed, built, and participated in by university students. Established in 1978 by the Society of Automotive Engineers (SAE International), FSAE requires teams to design and build their own formula-style single-seat race cars according to racing rules and car manufacturing standards, and to participate in all or part of the races. The competition demands excellent performance in acceleration, braking, and handling, as well as sufficient stability and durability. Faster, lighter, and more stable are the common goals of all participating teams.

[0003] In FSAE Formula One racing, lightweighting and miniaturization have a crucial impact on the car's power and durability. Reducing the volume of the oil tank can appropriately reduce weight and save space. However, due to the large forward and lateral acceleration, oil pressure fluctuations may occur. Furthermore, after the oil is pumped out, some air bubbles will mix in, which not only affects lubrication but also creates more bubbles when the air-filled oil enters the oil tank. Due to the characteristics of engine oil, these air bubbles are not easily eliminated, thus affecting not only oil pumping but also the lubrication of the engine.

[0004] Patent CN209430256U discloses an oil storage device for a dry lubrication system, including a tank. The top of the tank has an installation port with a cyclone separator. The bottom of the tank has an oil outlet. A support column is installed inside the tank along its centerline. A conical buffer cover is located inside the tank at the midpoint of its length. The buffer cover has perforations along its centerline and is fitted onto the support column through these perforations. The outer top surface of the buffer cover faces the top of the tank. The top of the support column extends beyond the outer top surface of the buffer cover. The buffer cover has multiple oil leakage holes, and there is a clearance fit between the buffer cover and the inner wall of the tank. This patent can reduce air bubbles generated by the impact of incoming oil on the stored oil. However, the oil-air separation effect is poor, and the baffle does not have unidirectional characteristics, resulting in a large difference in oil suction capacity under positive and negative lateral acceleration. The oil sloshing suppression ability is insufficient, and this patent cannot reduce the weight of racing cars or save space. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects of the prior art and provide an oil tank for an FSAE racing car oil-gas separator. This invention has a compact structure, saves space, and is easy to arrange. When the oil volume is low or the forward or lateral acceleration is large, the separator and oil guiding unit can make the oil collect in the small oil chamber, ensuring the stability of the oil pressure.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] This invention provides an oil tank for an FSAE racing car oil-gas separator. The oil tank includes a tank body and a small oil chamber that form a combined assembly. The tank body has a main oil chamber inside, a separator is provided at the upper part of the main oil chamber, and an oil guiding unit is provided at the lower part of the main oil chamber. The small oil chamber has a small oil chamber inside, and the oil guiding unit guides the oil from the main oil chamber to the small oil chamber below the main oil chamber.

[0008] As a preferred technical solution, the small oil chamber is connected to the tank body via a flange.

[0009] Furthermore, the oil guiding unit includes a swirl plate and two radial baffles, wherein the swirl plate is connected to the lower part of the separator, the radial baffles are connected to the swirl plate, and the bottom of the swirl plate is provided with an opening and a connecting plate, both of which are connected to the bottom of the tank.

[0010] Furthermore, the swirl plate is a conical thin cylinder, and the radial baffle is a trapezoidal thin plate.

[0011] Furthermore, the separator includes a cyclone plate and a central column, wherein the central column has a spiral gap evenly distributed along its center line, the cyclone plate is located around the central column and is alternately arranged with the spiral gap, the center line of the cyclone plate and the center line of the central column are coaxially arranged, and the cyclone plate rotates around its center line several times.

[0012] Furthermore, the cyclone plate is a spiral thin plate, and the central column is a cylindrical thin cylinder.

[0013] Furthermore, a flow guide tail plate is provided at the bottom of the central column, and the flow guide tail plate is in the shape of a trumpet.

[0014] Furthermore, the lower part of the tank is provided with an oil outlet pipe that extends into the main oil chamber and the small oil chamber. The bottom of the oil outlet pipe is provided with an oil suction port, which is located at the bottom of the small oil chamber.

[0015] Furthermore, the small oil chamber is a cylindrical tube, and the oil suction port is funnel-shaped.

[0016] Furthermore, the separator is provided with an oil inlet pipe, the tank below the separator is provided with an oil filling port, and the top of the separator is provided with an overflow port.

[0017] As a preferred technical solution, the tank body, cyclone plate, central column, flare mouth, swirl plate, radial baffle, connecting plate, oil inlet pipe, oil filling port, oil outlet pipe, oil suction port and overflow port are all made of composite polymer material or metal material and are 3D printed. The composite polymer material includes nylon or nylon glass fiber, and the metal material includes aluminum-magnesium alloy or titanium alloy.

[0018] Furthermore, an oil sighting pipe is installed axially on the outside of the tank body. This sighting pipe is located below the oil inlet and is used to monitor the oil volume.

[0019] As a preferred technical solution, the material of the oil viewing tube is transparent oil-resistant rubber or transparent polytetrafluoroethylene.

[0020] During operation, oil is pumped in through the inlet pipe. The oil, containing numerous air bubbles, flows at high speed into the separator. The compression between the oil and the cyclone plates separates the oil and air. Simultaneously, the oil flows from the spiral gap of the central column into the cyclone plate located at the bottom of the separator, while the air is discharged from the overflow port at the top of the separator. Furthermore, due to the multi-layered structure of the cyclone plates, the oil flow is diverted and slowed down. The oil then flows out from the notch at the bottom of the cyclone plate into the main oil chamber, where its flow rate is further reduced. Finally, the oil flows into the small oil chamber through the radial baffle. In this invention, the multi-layered cyclone plates, the oil guiding unit, and the small oil chamber cavity divide the tank into several oil chambers. This effectively suppresses oil splashing and concentrates a small amount of oil in the small oil chambers, ensuring that the oil in the small oil chambers always submerges the oil inlet of the oil pipe. When the oil level is low, oil is manually added to the tank through the oil filler port.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] (1) The present invention is easy to arrange. When there is less oil or the forward or lateral acceleration is large, the oil can be collected in the small oil chamber through the separator and the oil guiding unit to ensure the stability of the oil pressure.

[0023] (2) The separator of the present invention consists of multiple cyclone plates and a central column, and has a high oil-gas separation efficiency.

[0024] (3) Most of the present inventions are made of composite polymer materials or metal materials, which makes the oil tank lighter and smaller in volume, while having good sealing and oil resistance, ensuring that the oil can be maintained in the small oil chamber and optimizing the engine layout.

[0025] (4) The swirl plate and radial baffle of the present invention have a guiding function, which helps to guide the oil into the small oil chamber and at the same time suppress the splashing of the oil.

[0026] (5) The small oil chamber of the present invention has the function of reducing oil level fluctuations and ensuring that the oil can be maintained in the small oil chamber. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the oil tank of the FSAE race car oil-gas separator in an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional schematic diagram of the oil tank of the FSAE race car oil-gas separator in an embodiment of the present invention;

[0029] Figure 3 This is a data acquisition diagram of vehicle speed after the vehicle has been running violently, as shown in this embodiment of the invention.

[0030] Figure 4 This is a graph showing the engine speed data collected after the vehicle has been running violently, as described in an embodiment of the present invention.

[0031] Figure 5 This is a graph showing the engine pressure data collected after the vehicle has been running violently, according to an embodiment of the present invention.

[0032] Explanation of markings in the diagram:

[0033] 1—Tank body, 11—Main oil chamber, 12—Small oil chamber, 2—Separator, 21—Cyclone plate, 22—Central column, 3—Guiding oil unit, 31—Swirl plate, 32—Radiating baffle, 4—Small oil chamber cavity, 5—Oil inlet pipe, 6—Oil filling port, 7—Oil outlet pipe, 8—Oil sight pipe, 9—Overflow port. Detailed Implementation

[0034] The present invention will now be described in detail with reference to specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0035] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] Example:

[0038] An FSAE racing car oil-gas separator oil tank, such as Figure 1 and 2 As shown, the main structure of the oil tank includes a tank body 1, an oil sight glass 8, an oil inlet 6, an oil inlet pipe 5, an oil outlet pipe 7, an overflow port 9, a small oil chamber 4, and a separator 2 and an oil guiding assembly 3 located inside the tank body 1. The tank body 1 has an irregular geometric shape, with the main oil chamber 11 on the right and a small oil chamber 12 below the main oil chamber 11 on the left, both approximately cuboid in shape and internally interconnected. The separator 2 consists of a cyclone plate 21 and a central column 22. The cyclone plate 21 is a spiral thin plate, and the central column 22 is a cylindrical thin cylinder, with spiral sections evenly distributed. The tank 1 has a spiral gap with a horn-shaped guide tail plate at the bottom. A cyclone plate 21 is positioned around the central column 22, alternating with the spiral gap. The centerline of the cyclone plate 21 is coaxial with the centerline of the central column 22. The cyclone plate 21 is connected to the central column 22. The oil guiding assembly 3 consists of a swirl plate 31 and a radial baffle 32. The swirl plate 31 is a conical thin cylinder with an opening at the bottom. The radial baffle 32 is a trapezoidal thin plate connected to the swirl plate 31. The connecting plates at the bottom of both the radial baffle 32 and the swirl plate 31 are connected to the bottom of the tank 1. The oil outlet pipe 7 is a 90-degree bend, extending from the lower part of the tank 1 into the main oil chamber 11 and the small oil chamber 12. A horn-shaped oil suction port is located at the bottom of the small oil chamber 12. The small oil chamber cavity 4 is a cylindrical cylinder connected to the tank 1 by a flange. The tank body 1, separator 2, oil guiding assembly 3, small oil chamber 4, oil inlet pipe 5, oil filling port 6, oil outlet pipe 7, oil suction port, and overflow port 9 are all made of composite polymer material and can be 3D printed from nylon. An oil sight glass 8 is installed axially externally on the oil tank to monitor the oil level; the sight glass 8 is made of transparent, oil-resistant rubber. The oil filling port 6 is located on the tank body 1 below the separator 2.

[0039] In operation, the oil is pumped in through the inlet pipe 5 on the separator 2. The oil, containing numerous air bubbles, flows at high speed into the separator 2 from the inlet pipe 5. The compression between the oil and the cyclone plate 21 separates the oil and air. Simultaneously, the oil flows from the spiral gap of the central column 22 into the cyclone plate 31 located at the bottom of the separator 2, while the air is discharged from the overflow port 9 at the top of the separator 2. At the same time, since the cyclone plate 21 has a multi-layer structure, it can divert and reduce the speed of the oil. The oil then flows out from the notch at the bottom of the cyclone plate 31 into the main oil chamber 11, where the flow rate is further reduced. Finally, the oil flows into the small oil chamber 12 through the radial baffle 32. In this invention, the multi-layer cyclone plate 21, the oil guiding unit 3, and the small oil chamber 4 divide the tank 1 into several oil chambers. This effectively suppresses oil splashing and concentrates a small amount of oil in the small oil chamber 12, ensuring that the oil in the small oil chamber 12 always submerges the oil suction port of the oil pipe 7, achieving both lightweight design and stability. When the engine oil is insufficient, oil is injected into the tank 1 through the oil filling port 6 to manually replenish the oil.

[0040] The oil-gas separation efficiency is measured by calculating the volume ratio of the oil outlet pipe 7 and the overflow port 9 at the oil and air outlets.

[0041] Table 1 Experimental results of oil-gas separation efficiency

[0042] substance Mass (kg / s) <![CDATA[Density (kg / m 3 )]]> Volume (mL / s) proportion oil <![CDATA[5.55×10 -1 ]]> 876 633.56 95.4％ Air <![CDATA[4.37×10 -5 ]]> 1.429 30.58 4.6％

[0043] As shown in Table 1, the oil-gas separation efficiency reached 95.4%, meeting the design target.

[0044] After the vehicle equipped with the aforementioned FSAE racing oil-gas separator tank and Triumph 675 engine underwent vigorous running, such as Figures 3 to 5 As shown, when the vehicle accelerates from 0 to 100km / h within 4 seconds, the lowest engine speed is 4418.7rpm, the highest is 11408.3rpm, and the average is 9354.2rpm. The lowest engine pressure is 386.1rpm, the highest is 479.9rpm, and the average is 443.5rpm. Engine pressure is equivalent to oil pressure. After the engine stabilizes, the oil pressure stabilizes at 443.5±50kPa.

[0045] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. An FSAE race car oil-air separator oil tank characterized by, The oil tank includes a tank body (1) and a small oil chamber cavity (4) that make up the assembly. The tank body (1) has a main oil chamber (11) inside. A separator (2) is provided on the upper part of the main oil chamber (11). An oil guiding unit (3) is provided on the lower part of the main oil chamber (11). The small oil chamber cavity (4) has a small oil chamber (12) inside. The oil guiding unit (3) guides the oil from the main oil chamber (11) to the small oil chamber (12) below the main oil chamber (11). The oil guiding unit (3) includes a swirl plate (31) and a radial baffle (32), wherein the swirl plate (31) is connected to the lower part of the separator (2) and the radial baffle (32) is connected to the swirl plate (31). The swirl plate (31) is a conical cylinder; The separator (2) includes a cyclone plate (21) and a central column (22), wherein the central column (22) has a spiral gap evenly distributed along the center line, and the cyclone plate (21) is located on the periphery of the central column (22) and is alternately arranged with the spiral gap; The cyclone plate (21) is a spiral plate; During use, the oil is pumped in through the inlet pipe (5). The oil containing air bubbles flows into the separator (2) at high speed through the inlet pipe (5). The oil and gas are separated by the compression between the oil and the cyclone plate (21). At the same time, the oil flows into the cyclone plate (31) located at the bottom of the separator (2) through the spiral gap of the central column (22), while the air is discharged from the overflow port (9) at the top of the separator (2). Meanwhile, since the cyclone plate (21) has a multi-layer structure, the oil is diverted and its speed is reduced. The oil then flows out from the notch at the bottom of the cyclone plate (31) and enters the main oil chamber (11), further reducing the flow rate of the oil. The oil finally flows into the small oil chamber (12) through the radial baffle (32).

2. The FSAE racing vehicle oil-air separator oil tank according to claim 1, characterized in that, The bottom of the swirl plate (31) is provided with an opening and a connecting plate, which, along with the radiation baffle (32), is connected to the bottom of the tank (1).

3. The FSAE racing vehicle oil-air separator oil tank according to claim 1, characterized in that, The radiation baffle (32) is a trapezoidal plate.

4. The FSAE racing vehicle oil-air separator oil tank according to claim 1, characterized in that, The centerline of the cyclone plate (21) and the centerline of the central column (22) are set coaxially.

5. The FSAE racing vehicle oil-air separator oil tank according to claim 1, characterized in that, The central column (22) is a cylindrical tube.

6. The FSAE racing vehicle oil-air separator oil tank according to claim 1, characterized in that, The bottom of the central column (22) is provided with a flow guide tail plate, which is in the shape of a trumpet.

7. The FSAE racing vehicle oil-air separator oil tank according to claim 1, characterized in that, The lower part of the tank (1) is provided with an oil outlet pipe (7), which extends into the main oil chamber (11) and the small oil chamber (12). The bottom of the oil outlet pipe (7) is provided with an oil suction port, which is located at the bottom of the small oil chamber (12).

8. The FSAE racing vehicle oil-air separator oil tank according to claim 7, characterized by, The small oil chamber (4) is a cylindrical tube, and the oil suction port is funnel-shaped.

9. The FSAE racing vehicle oil-air separator oil tank according to claim 1, characterized in that, The separator (2) is provided with an oil inlet pipe (5), the tank (1) below the separator (2) is provided with an oil filling port (6), and the top of the separator (2) is provided with an overflow port (9).

10. The FSAE racing vehicle oil-air separator oil tank according to claim 9, characterized by, An oil sighting pipe (8) is installed on the outside of the tank (1), and the oil sighting pipe (8) is located below the oil inlet (6).

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