A dry lubrication system for FSAE racing cars

Abstract

The present invention relates to a dry lubrication system for an FSAE racing car, comprising a dry oil pan (1), an oil pump (2), an oil cooler (3) and an oil tank (4); wherein the oil pump (2) comprises a scavenging pump and a high-pressure pump, the dry oil pan (1) is flat and provided with a plurality of baffles to form a chamber structure of different sizes, the scavenging pump oil suction point is located in a small chamber, and the high-pressure pump oil discharge point is located in a large chamber; the oil pump (2) is arranged on the dry oil pan (1), and the oil pump (2), the oil tank (4) and the oil cooler (3) are connected in sequence. Compared with the prior art, the present invention reduces the height of the oil pan, thereby reducing the height of the center of mass of the engine and the entire vehicle, and stabilizes oil suction, and the system is lightweight and highly integrated; the oil is stored in the oil tank, slowing down the deterioration of the crankcase gas and prolonging the service life of the oil; the oil is temperature-controlled by the oil cooler, so that the oil can always be kept in an optimal temperature range.

Description

Technical Field

[0001] The invention belongs to the technical field of FSAE formula racing cars and relates to a dry lubrication system for FSAE racing cars. Background Art

[0002] Formula Student (FSAE), abbreviated as FSAE, is a student-run Formula One competition designed, built, and participated in entirely by university students. Established in 1978 by the Society of Automotive Engineers (SAE International), FSAE requires each team to design and build a small, single-seater Formula-style race car in accordance with the competition rules and car manufacturing standards, and then participate in all or part of the race. The engines used in these teams' race cars are typically large-displacement motorcycle engines, such as the popular Triumph 675. Their original lubrication system is a wet sump, which stores oil. The wet sump is approximately 100 mm high, making it bulky and resulting in a higher center of mass for the engine. Furthermore, in a wet lubrication system, excess oil adheres to the crankshaft, increasing crankshaft resistance and reducing engine power output.

[0003] The competition demands cars with excellent acceleration, braking, and handling, as well as sufficient stability and durability. Faster, lighter, and more stable are the common goals. Lightweighting in FSAE Formula One racing has a crucial impact on the car's power and durability. Lowering the vehicle's center of mass improves its dynamics and maneuverability.

[0004] Patent CN107201927A discloses a dry lubrication system used in Formula Student racing cars. This dry lubrication system is placed outside the engine and includes the engine's oil pan, oil filter, oil tank, external oil pump and oil handle; the oil pan is flat and has one or more downwardly concave oil return grooves on it; the oil tank is cylindrical; the external oil pump is a three-stage coaxial pump, which is composed of a first-stage pump, a second-stage pump and a third-stage pump connected in sequence. Patent CN207660662U discloses a dry sump lubrication system suitable for small racing cars, including a dry sump, an oil pump, an oil tank, an oil handle body and a filter. The dry sump is connected to the hole position of the engine crankcase by a flange and bolts; the side of the dry sump has two outlet ends, and the outlet ends of the dry sump are respectively connected to the oil pump through connecting pipes. The oil pump is connected to the oil inlet at the upper end of the oil tank through a connecting pipe, and the oil outlet at the lower end of the oil tank is connected to the oil pump through a connecting pipe. The oil pump is connected to the oil handle body through a connecting pipe, and the oil filter is connected to the oil handle body. A tubular cyclone separator with oil-gas separation effect is provided inside the oil tank. These patents reduce the height of the oil pan; the lubricating oil flows for a long time, reducing the oil temperature and avoiding the weakening of the lubrication effect due to insufficient viscosity; however, there are problems such as the external placement of the oil pump, the dry lubrication system occupies too much space and is too heavy, and there is no liquid baffle design in the oil pan, resulting in unstable oil pressure under positive and negative lateral acceleration, uncontrollable oil temperature, and insufficient oil and gas efficiency in the oil tank. Summary of the Invention

[0005] The purpose of the present invention is to provide a dry lubrication system for FSAE racing cars in order to overcome the defects of the above-mentioned prior art. The arrangement of the dry oil sump and the built-in oil pump of the present invention reduces the height of the oil sump and makes the arrangement more compact, which can save rear cabin space and lower the center of mass. The dry oil sump is provided with a baffle, and the scavenging pump oil suction pipe in the small chamber is designed to be trumpet-shaped, thereby improving the oil suction efficiency and improving the oil suction stability under lateral or fore-aft acceleration. The oil tank is designed with a liquid baffle to improve the oil-gas separation efficiency and the stability of the oil pressure. The oil cooler can be actively controlled to maintain the oil temperature within the optimal operating temperature range of the engine.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The present invention provides a dry lubrication system for an FSAE racing car, the dry lubrication system comprising a dry oil sump, an oil pump, an oil cooler, and an oil tank;

[0008] The oil pump is located inside the engine, including a scavenge air pump and a high-pressure pump. The dry oil sump is flat and has several baffles forming chambers of varying sizes. The scavenge air pump's oil suction point is located in the small chamber, while the high-pressure pump's oil discharge point is located in the large chamber.

[0009] The oil pump is installed on the dry oil sump, and the oil pump, oil tank and oil cooler are connected in sequence.

[0010] As a preferred technical solution, the height of the dry oil sump is 13-15 mm.

[0011] Furthermore, the baffle is a rectangular thin plate, including a first vertical baffle, a second vertical baffle, a horizontal baffle and a third vertical baffle. The connection between the horizontal baffle and the third vertical baffle and the dry oil sump is provided with several semicircular holes for oil circulation. The baffle is welded to the dry oil sump to prevent oil splashing.

[0012] Furthermore, the transverse baffle, the third vertical baffle and the dry oil sump form two small chambers, the transverse baffle and the dry oil sump form a large chamber, and the first vertical baffle and the second vertical baffle are arranged in the large chamber.

[0013] Furthermore, the oil pump includes a pump housing and a three-stage coaxial pump inside the pump housing, the three-stage coaxial pump includes a first-stage pump, a second-stage pump and a third-stage pump connected in sequence, wherein the first-stage pump and the second-stage pump are scavenging pumps, and the third-stage pump is a high-pressure pump;

[0014] The oil pump is connected to the first scavenging pump oil suction pipe, the second scavenging pump oil suction pipe, the scavenging pump outlet pipe, the high-pressure pump outlet pipe, the high-pressure pump inlet joint, the fixed lifting lug and the sprocket. The first scavenging pump oil suction pipe, the second scavenging pump oil suction pipe, the scavenging pump outlet pipe and the high-pressure pump outlet pipe are respectively connected to the oil pump through flanges. The scavenging pump outlet pipe is connected to the oil tank. The high-pressure pump inlet joint is connected to the oil cooler through the high-pressure pump inlet adapter and the joint. The fixed lifting lug is connected to the engine. The engine drives the sprocket to rotate through the chain to rotate the oil pump, thereby sucking oil.

[0015] As a preferred technical solution, the scavenging pump is a Roots pump, and the high-pressure pump is a gear pump.

[0016] As a preferred technical solution, the first scavenging pump oil suction pipe and the second scavenging pump oil suction pipe are both made of composite polymer materials and are made by 3D printing. The composite polymer materials include nylon or nylon glass fiber.

[0017] As a preferred technical solution, the scavenging pump outlet pipe and the high-pressure pump outlet pipe are both made of metal materials, and are made by 3D printing technology or machining and welding technology. The metal materials include aluminum-magnesium alloy or titanium alloy.

[0018] Furthermore, the first scavenging pump oil suction pipe and the second scavenging pump oil suction pipe are respectively arranged in two small chambers, the scavenging pump outlet pipe is arranged between the first vertical baffle and the second vertical baffle, and the high-pressure pump outlet pipe is arranged outside the first vertical baffle and the second vertical baffle.

[0019] Furthermore, the pipe openings of the first scavenging air pump oil suction pipe, the second scavenging air pump oil suction pipe and the high-pressure pump outlet pipe are trumpet-shaped.

[0020] Furthermore, the oil tank includes several upper liquid baffles, cyclone separators, several lower liquid baffles, an oil outlet, an overflow port and an oil inlet, wherein the cyclone separator is arranged at the upper part of the oil tank, the upper liquid baffle is arranged inside the cyclone separator, and the lower liquid baffle is arranged at the lower part of the oil tank, with an oil suction port in the middle, the oil suction port is connected to the small oil chamber at the bottom of the oil tank, the overflow port is arranged at the top of the oil tank, the oil inlet is arranged at the upper part of the oil tank, and is connected to the scavenging pump outlet pipe through a joint, a connecting pipe and a scavenging pump outlet adapter. The oil tank is connected to the engine through the oil tank support side cover, the oil outlet is arranged at the lower part of the oil tank, and is connected to the oil cooler through a connecting pipe.

[0021] As a preferred technical solution, the oil tank is cylindrical and has a capacity of 3.0-3.5L. Its main function is to store oil and separate oil and gas, while also playing a certain role in cooling and exhausting.

[0022] As a preferred technical solution, the upper liquid baffle plate and the lower liquid baffle plate are circular, and circular holes are evenly distributed on the plates to prevent oil from splashing.

[0023] As a preferred technical solution, the oil inlet and outlet are both tangent to the tank body of the oil tank, ensuring that the oil flows along the tank wall without splashing, effectively separating the oil and gas.

[0024] As a preferred technical solution, the connecting pipe is a stainless steel wire braided rubber oil pipe or a braided nylon plastic oil-resistant pipe.

[0025] Furthermore, an oil sight tube is provided axially connected to the outside of the oil tank for monitoring the oil capacity.

[0026] As a preferred technical solution, the material of the oil sight tube is transparent oil-resistant rubber or transparent polytetrafluoroethylene.

[0027] Furthermore, the connection between the scavenging pump outlet pipe and the scavenging pump outlet adapter is sealed by an O-ring, and the scavenging pump outlet adapter is fixed on the engine; the connection between the high-pressure pump inlet joint and the high-pressure pump inlet adapter is also sealed by an O-ring, and the high-pressure pump inlet adapter is fixed on the engine.

[0028] Furthermore, the dry oil sump is provided with an oil drain plug.

[0029] As a preferred technical solution, when the dry lubrication system is working, the set pressure in the oil tank is 0.3-0.6 MPa, and the return oil flow rate is 2-3 times the oil supply flow rate.

[0030] During operation, the oil in the dry sump collects in a small chamber and is pumped into the oil tank through the suction pipes of the scavenge air pumps on both sides. The oil and air are separated by a cyclone separator in the oil tank. After reaching the bottom of the oil tank, the oil is pumped out by the oil pump. Heat exchange is carried out through the oil cooler to stabilize the oil in the optimal temperature range before it is finally pumped out through the high-pressure pump outlet pipe. The internal oil pump saves a lot of space, is lightweight, and is integrated, while ensuring stable oil supply.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] (1) The dry sump height of the present invention is reduced to 15 mm, which greatly reduces the engine center of mass and improves the handling stability of the vehicle;

[0033] (2) The dry sump of the present invention has a baffle, and the oil suction port is arranged in a small chamber, which ensures stable oil pressure under large forward and lateral accelerations;

[0034] (3) The oil suction pipe of the present invention is made of composite polymer material, which makes the oil suction pipe lighter. The oil suction pipe opening is designed as a bell-mouth shape to improve the oil suction efficiency.

[0035] (4) The oil and gas in the oil tank of the present invention are separated and accumulated at the bottom of the tank. The liquid baffle improves the oil pumping efficiency and ensures stable oil pressure under various working conditions.

[0036] (5) The oil of the present invention passes through the oil cooler to control the oil temperature so that the oil can always be kept in the optimal temperature range;

[0037] (6) The present invention adopts forced oil return, which creates negative pressure inside the crankcase, reduces the downward resistance of the piston, and improves power to a certain extent;

[0038] (7) The dry oil sump of the present invention is provided with an oil drain plug to facilitate oil replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the structure of the FSAE racing car dry lubrication system in an embodiment of the present invention;

[0040] Figure 2 A schematic structural diagram of an oil pump according to an embodiment of the present invention;

[0041] Figure 3 Schematic diagram of the structure of a dry oil sump in an embodiment of the present invention;

[0042] Figure 4 Schematic diagram of the structure of the oil tank in an embodiment of the present invention;

[0043] Figure 5 Schematic cross-sectional view of the oil tank in an embodiment of the present invention.

[0044] Description of the marks in the figure:

[0045] 1—Dry sump, 11—First vertical baffle, 12—Second vertical baffle, 13—Horizontal baffle, 14—Third vertical baffle, 15—Oil drain plug, 2—Oil pump, 21—First scavenge air pump suction pipe, 22—Second scavenge air pump suction pipe, 23—Scavenge air pump outlet pipe, 24—High-pressure pump outlet pipe, 25—High-pressure pump inlet connector, 26—Fixing lug, 27—Sprocket, 3—Oil cooler, 4—Oil tank, 41—Upper liquid baffle, 42—Cyclone separator, 43—Lower liquid baffle, 44—Oil suction port, 45—Overflow port, 46—Oil sight pipe, 47—Oil inlet, 48—Oil outlet, 5—High-pressure pump inlet adapter, 6—Scavenge air pump outlet adapter. DETAILED DESCRIPTION

[0046] The present invention is described in detail below with reference to specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0047] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present 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.

[0048] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0049] Example:

[0050] A FSAE racing car dry lubrication system, such as Figure 1 As shown, the dry lubrication system includes a dry oil sump 1 and an oil pump 2, an oil cooler 3 and an oil tank 4 arranged inside the engine. The oil pump 2 is arranged on the dry oil sump 1, and the oil pump 2, the oil tank 4 and the oil cooler 3 are connected in sequence.

[0051] like Figure 3 As shown, the dry sump 1 is flat and 15 mm tall. It is equipped with a first vertical baffle 11, a second vertical baffle 12, a transverse baffle 13, and a third vertical baffle 14. These baffles are all rectangular thin plates. The vertical baffles 11 and transverse baffles 13 are welded to the dry sump 1. Ten and six semicircular holes are provided at the connection points between the transverse baffles 13 and the third vertical baffle 14 and the dry sump 1, respectively, for oil circulation. The transverse baffles 13, the third vertical baffle 14, and the dry sump 1 form two small chambers. The transverse baffles 13 and the dry sump 1 form a larger chamber, with the first and second vertical baffles 11, 12 located within the larger chamber. The dry sump 1 is equipped with an oil drain plug 15.

[0052] like Figure 2 As shown, the oil pump 2 is connected to a first scavenging pump suction pipe 21, a second scavenging pump suction pipe 22, a scavenging pump outlet pipe 23, a high-pressure pump outlet pipe 24, a high-pressure pump inlet connector 25, a fixing lug 26, and a sprocket 27. The first and second scavenging pump suction pipes 21 and 22 are flanged to the oil pump 2. The scavenging pump outlet pipes 23 and 24 are flanged to the oil pump 2. The oil pump 2 is connected to the engine via a fixing lug 26. The engine rotates the sprocket 27 via a chain, causing the oil pump 2 to rotate and thereby draw oil. The openings of the first, second, and high-pressure pump suction pipes 21 and 22 are trumpet-shaped. The first and second scavenging pump suction pipes 21 and 22 are both made of composite polymer materials and can be 3D-printed from nylon. The scavenging pump outlet pipe 23 and the high-pressure pump outlet pipe 24 are both made of metal materials and can be 3D printed from aluminum-magnesium alloy.

[0053] The oil pump 2 consists of a pump casing and a three-stage coaxial pump. The three-stage coaxial pump consists of a first-stage pump, a second-stage pump and a third-stage pump connected in sequence. The first-stage pump and the second-stage pump are scavenging pumps, Roots pumps, and the third-stage pump is a high-pressure gear pump. A high-pressure pump outlet is provided on the upper part of one side of the pump casing, and a high-pressure pump inlet is provided on the corresponding left side. A first scavenging pump inlet is provided on the lower part of the other side of the pump casing. A scavenging pump outlet is provided on the upper middle part of the pump casing, and a second scavenging pump inlet is provided on the corresponding lower part.

[0054] like Figure 1As shown, the oil outlet 48 of the oil tank 4 is connected to the oil cooler 3 via a connecting pipe. The oil cooler 3 is connected to the high-pressure pump inlet connector 25 of the oil pump 2 via a connector and the high-pressure pump inlet adapter 5. The oil inlet 47 of the oil tank 4 is connected to the scavenge pump outlet pipe 23 of the oil pump 2 via a connector, a connecting pipe, and the scavenge pump outlet adapter 6. The connecting pipe is a stainless steel wire braided rubber oil hose. The scavenge pump outlet pipe 23 is connected to the scavenge pump outlet adapter 6 and sealed with an O-ring. The scavenge pump outlet adapter 6 is fixed to the engine. The high-pressure pump inlet connector 25 is connected to the high-pressure pump inlet adapter 5 and sealed with an O-ring. The high-pressure pump inlet adapter 5 is fixed to the engine. The first scavenge pump oil suction pipe 21 and the second scavenge pump oil suction pipe 22 are respectively located in two small chambers. The scavenge pump outlet pipe 23 is located between the first vertical baffle 11 and the second vertical baffle 12, and the high-pressure pump outlet pipe 24 is located outside the first vertical baffle 11 and the second vertical baffle 12.

[0055] like Figure 4 and 5 As shown, the oil tank 4 is cylindrical and has a capacity of 3.5L. The main function of the oil tank 4 is to store oil and separate oil and gas, while also playing a certain role in cooling and exhausting. The cyclone separator 42 on the top plays the role of oil and gas separation. An overflow port 45 is installed on the top, and the function of the overflow port 45 is to overflow the oil and discharge the exhaust gas. An oil inlet 47 is provided on one side of the upper part, and an oil outlet 48 is provided on one side of the lower part. A circular upper baffle plate 41 and a circular lower baffle plate 43 are installed in the oil tank 4. An oil suction port 44 is provided in the middle of the circular lower baffle plate 43. The oil suction port 44 is arranged in the small oil chamber at the bottom of the oil tank 4. The upper baffle plate 41 is 278mm away from the inner bottom surface of the oil tank 4, and the lower baffle plate 43 is 50mm away from the inner bottom surface of the oil tank 4. Circular holes are evenly distributed on the upper baffle plate 41 and the lower baffle plate 43 to prevent oil splashing. Both the oil inlet 47 and the oil outlet 48 are tangential to the oil tank 4, ensuring that the oil flows along the tank wall without splashing, effectively separating the oil and gas. An oil sight tube 46, made of transparent, oil-resistant rubber, is installed axially outside the oil tank 4 to monitor the oil level. The oil tank 4 is connected to the engine via a supporting side cover.

[0056] During operation, the oil in the dry sump 1 collects in a small chamber and is pumped into the oil tank 4 via the first and second scavenging pump suction pipes 21 and 22 of the scavenging pumps on either side. The oil and gas are separated by the cyclone separator 42 within the oil tank 4. After reaching the bottom of the oil tank 4, the oil is pumped out by the oil pump 2. Heat exchange occurs through the oil cooler 3, stabilizing the oil temperature within the optimal range. Finally, the oil pump 2 is pumped out through the high-pressure pump outlet pipe 24. The extremely low oil sump height and the integrated oil pump 2 ensure efficient oil suction during cornering, maintaining a stable engine oil pressure within the 300-600 kPa range. The integrated oil pump 2 saves significant space, ensuring lightweight and integrated operation while also ensuring stable oil supply. This embodiment greatly reduces the height of the oil pan, thereby reducing the center of mass of the engine and the center of mass of the vehicle. Compared with the original wet oil pan, the center of mass is reduced by 83 mm. It also has the characteristics of stable oil absorption, lightweight system, and high integration. The engine oil is stored in the oil tank 4, which slows down the deterioration of the crankcase gas and increases the service life of the engine oil. At the same time, the engine oil is temperature-controlled by the oil cooler 3, so that the engine oil can always be kept in the optimal temperature range, which is 110±10°C.

[0057] When the dry lubrication system is working, the oil pump 2 is driven by the engine (the function of the sprocket 27). The faster the engine speed, the faster the corresponding oil pump 2 speed, that is, the greater the pressure in the oil tank 4. The set pressure in the oil tank 4 is 0.3-0.6MPa, and the return oil flow rate is 2-3 times the oil supply flow rate. Forced oil return is used to reduce the downward resistance of the piston and improve the power to a certain extent.

[0058] The above description of the embodiments is intended to facilitate understanding and use of the invention by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. 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 present invention, should be within the scope of protection of the present invention.

Claims

1. A FSAE racing car dry lubrication system, characterized in that: The dry lubrication system comprises a dry oil sump (1), an oil pump (2), an oil cooler (3) and an oil tank (4); The oil pump (2) includes a scavenging pump and a high-pressure pump. The dry oil sump (1) is flat and has a plurality of baffles forming chamber structures of different sizes. The scavenging pump oil suction point is located in the small chamber, and the high-pressure pump oil discharge point is located in the large chamber. The oil pump (2) is arranged on the dry oil sump (1), and the oil pump (2), the oil tank (4) and the oil cooler (3) are connected in sequence; The baffle is a rectangular thin plate, comprising a first vertical baffle (11), a second vertical baffle (12), a transverse baffle (13) and a third vertical baffle (14), and semicircular holes for oil circulation are provided at the connection between the transverse baffle (13) and the third vertical baffle (14) and the dry oil sump (1); The transverse baffle (13), the third vertical baffle (14) and the dry oil sump (1) enclose two small chambers, the transverse baffle (13) and the dry oil sump (1) enclose a large chamber, and the first vertical baffle (11) and the second vertical baffle (12) are arranged in the large chamber; The oil tank (4) comprises an upper liquid baffle (41), a cyclone separator (42), a lower liquid baffle (43), an oil suction port (44), an overflow port (45), an oil inlet (47) and an oil outlet (48), wherein the cyclone separator (42) is arranged at the upper part of the oil tank (4), the upper liquid baffle (41) is arranged inside the cyclone separator (42), the lower liquid baffle (43) is arranged at the lower part of the oil tank (4), an oil suction port (44) is opened in the middle, the oil suction port (44) is connected to the small oil chamber at the bottom of the oil tank (4), the overflow port (45) is arranged at the top of the oil tank (4), the oil inlet (47) is arranged at the upper part of the oil tank (4), and is connected to the scavenging pump outlet pipe (23) through a joint, a connecting pipe and a scavenging pump outlet adapter (6), and the oil outlet (48) is arranged at the lower part of the oil tank (4) and is connected to the oil cooler (3) through a connecting pipe.

2. The FSAE racing car dry lubrication system according to claim 1, characterized in that: The oil pump (2) comprises a pump housing and a three-stage coaxial pump inside the pump housing, the three-stage coaxial pump comprising a first-stage pump, a second-stage pump and a third-stage pump connected in sequence, wherein the first-stage pump and the second-stage pump are scavenging pumps, and the third-stage pump is a high-pressure pump; The oil pump (2) is connected to a first scavenging pump oil suction pipe (21), a second scavenging pump oil suction pipe (22), a scavenging pump outlet pipe (23), a high-pressure pump outlet pipe (24), a high-pressure pump inlet joint (25), a fixed lug (26) and a sprocket (27); the scavenging pump outlet pipe (23) is connected to an oil tank (4); the high-pressure pump inlet joint (25) is connected to an oil cooler (3) through a high-pressure pump inlet adapter (5) and a joint; the fixed lug (26) is connected to an engine, and the engine drives the sprocket (27) to rotate through a chain to rotate the oil pump (2).

3. The FSAE racing car dry lubrication system according to claim 2, characterized in that: The first scavenging pump oil suction pipe (21) and the second scavenging pump oil suction pipe (22) are respectively arranged in two small chambers, the scavenging pump outlet pipe (23) is arranged between the first vertical baffle (11) and the second vertical baffle (12), and the high-pressure pump outlet pipe (24) is arranged outside the first vertical baffle (11) and the second vertical baffle (12).

4. The FSAE racing car dry lubrication system according to claim 2, characterized in that: The pipe openings of the first scavenging pump oil suction pipe (21), the second scavenging pump oil suction pipe (22) and the high-pressure pump outlet pipe (24) are in a bell-mouth shape.

5. The FSAE racing car dry lubrication system according to claim 2, characterized in that: An oil sight tube (46) is provided outside the engine oil tank (4).

6. The FSAE racing car dry lubrication system according to claim 2, characterized in that: The connection between the scavenging pump outlet pipe (23) and the scavenging pump outlet adapter (6) is sealed by an O-ring, and the connection between the high-pressure pump inlet connector (25) and the high-pressure pump inlet adapter (5) is sealed by an O-ring.

7. The FSAE racing car dry lubrication system according to claim 1, characterized in that: The dry oil sump (1) is provided with an oil drain plug (15).

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