Air-cooled oil pan of aviation heavy oil piston engine
By using an air-cooled oil pan design, which combines the shell with cooling fins and a filter, the problem of insufficient heat dissipation in liquid-cooled oil pans is solved, achieving efficient heat dissipation and impurity separation, thus improving engine performance and lifespan.
Patent Information
- Application Number
- CN202520243104.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-02-17
AI Technical Summary
The existing liquid-cooled oil pan of heavy-oil piston engines has limited heat dissipation capacity under heavy load, which increases engine weight and affects reliability, and cannot meet the heat dissipation requirements of high-power engines.
An air-cooled oil pan was designed, which adopts a shell and heat dissipation fin structure, combined with oil stabilization steps and a filter device. Through the design of lubricating oil circulation and heat dissipation fins, effective heat dissipation and impurity separation are achieved, avoiding blockage and improving engine life and load capacity.
It improves the engine's heat dissipation capacity, reduces engine weight, enhances engine power performance and reliability, and extends engine service life.
Smart Images
Figure CN223634764U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of aero-engine, concretely relates to an air-cooled oil pan of an aero heavy oil piston engine. BACKGROUND
[0002] In recent years, the aero heavy oil piston engine occupies an increasingly important position in small aircraft and unmanned aerial vehicles. With the vigorous development of general aviation and low-altitude economy, the aero heavy oil piston engine gradually occupies the micro-aeronautical power market due to its low oil consumption and low cost. Unlike electric motors, the aero piston engine needs a lubrication system and a cooling system, and with the gradual increase of the load requirement, it is particularly important to reduce the weight of the engine and increase the power of the engine. With the increase of the engine power, new requirements are put forward for the heat dissipation capacity of the engine.
[0003] At present, the existing aero piston engine either adopts air cooling or liquid cooling. The air-cooled aero piston engine has limited heat dissipation capacity, which is not conducive to the strengthening of the power performance of the engine. The power performance of the liquid-cooled aero heavy oil piston engine is more prominent, which is conducive to improving the engine power and the load capacity of the aircraft. However, in the prior art, the oil pan of the liquid-cooled aero heavy oil piston engine only serves to collect the cylinder oil. This structure has defects when applied to the aero heavy oil piston engine: 1. The aero heavy oil piston engine works in a high load state for a long time, and in order to limit the temperature of the lubricating oil, a large flow of lubricating oil is required, so the volume of the oil pan is large, which increases the weight of the engine itself. 2. The oil pan itself has no heat dissipation enhancement, and the heat dissipation capacity is limited, which cannot meet the heat dissipation demand of the high-power engine, affecting the reliability of the engine itself.
[0004] Therefore, the above problems need to be solved. UTILITY MODEL CONTENT
[0005] The utility model discloses an air-cooled oil pan of an aero heavy oil piston engine, which improves the heat dissipation capacity, meets the heat dissipation demand of the high-power engine, avoids overheating of the engine, and provides the load capacity of the aircraft.
[0006] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides an air -cooled oil pan of aviation heavy oil piston engine, including the shell, the shell is equipped with the oil storage cavity of upper end opening. The shell is integrally connected with the heat dissipation fin, the shell side wall is equipped with the oil outlet and the oil drain, the oil outlet and the oil drain are connected with the oil storage cavity respectively, the oil storage cavity bottom surface is equipped with the oil stabilizing step, the oil stabilizing step is close to the oil outlet setting, the oil stabilizing step top surface is installed with the filter device, the filter device and the oil outlet are connected. The shell is installed in the crankcase bottom, the lubricating oil is injected in the oil storage cavity, the oil pump extracts the lubricating oil from the oil outlet in the engine operation process, the lubricating oil enters the oil storage cavity again from the crankcase through the lubricating system, forms the lubricating oil circuit circulation, the lubricating oil in the oil storage cavity flows out from the oil outlet through the filter device, the filter device filters the lubricating oil, avoids the impurity to enter the lubricating system, and simultaneously the filter device is installed on the oil stabilizing step top surface, the oil stabilizing step top surface is higher than the oil storage cavity bottom. Since the impurities in the oil will be deposited at the bottom of the oil storage cavity under the action of gravity, the oil stabilizing step can play a role in sedimentation separation, avoid the contact between the impurities in the oil pan and the filter device, avoid the blockage of the filter device, reduce the impurities entering the lubricating system with the oil, reduce the wear and tear, and improve the service life of the engine. The shell is integrally connected with the heat dissipation fin, when the heat in the shell interior is transmitted to the shell surface, the heat is transmitted to the air along the heat dissipation fin, the heat dissipation fin improves the contact area of the shell and the air, makes the heat more effectively radiate to the air, satisfies the heat dissipation demand of the high -power engine, and improves the load capacity of the aircraft.
[0007] Further, the air -cooled oil pan of aviation heavy oil piston engine is provided with a mounting surface around the upper end opening of the oil storage cavity, a plurality of through holes are arranged along the mounting surface, and a fastener is arranged in each through hole. The fastener is a locking bolt. The mounting surface and the crankcase are correspondingly arranged, the mounting surface and the crankcase are sealingly connected, the fastener is tightened to connect and fix the shell and the crankcase. This structure is simple and convenient to install, and can ensure the stable connection of the mounting surface and the crankcase.
[0008] Further, the air -cooled oil pan of aviation heavy oil piston engine is provided with a mounting surface around the upper end opening of the oil storage cavity, a plurality of through holes are arranged along the mounting surface, and a fastener is arranged in each through hole. The fastener is a locking bolt. The mounting surface and the crankcase are correspondingly arranged, the mounting surface and the crankcase are sealingly connected, the fastener is tightened to connect and fix the shell and the crankcase. This structure is simple and convenient to install, and can ensure the stable connection of the mounting surface and the crankcase.
[0009] Further, the air -cooled oil pan of aviation heavy oil piston engine is provided with a mounting surface around the upper end opening of the oil storage cavity, a plurality of through holes are arranged along the mounting surface, and a fastener is arranged in each through hole. The fastener is a locking bolt. The mounting surface and the crankcase are correspondingly arranged, the mounting surface and the crankcase are sealingly connected, the fastener is tightened to connect and fix the shell and the crankcase. This structure is simple and convenient to install, and can ensure the stable connection of the mounting surface and the crankcase.
[0010] Further, in the air aviation heavy oil piston engine air-cooled oil sump, the filter device comprises a cover part and an ear part, and the cover part is open at the lower end. The ear part is arranged around the side wall of the cover part, and the cover part and the ear part are integrally formed. The filter device is connected to the top surface of the oil stabilizing step through the ear part. A plurality of filter mesh holes are arranged around the side wall of the cover part. The ear part penetrates the bolt to lock the filter device to the top surface of the oil stabilizing step. This connection method is convenient to disassemble and assemble, and is convenient for subsequent maintenance and cleaning work.
[0011] Further, in the air aviation heavy oil piston engine air-cooled oil sump, the side wall of the shell is provided with a liquid level observation window. The liquid level observation window is in a strip shape, and the liquid level observation window is vertically arranged. A liquid level observation plate is arranged at the observation window, and the liquid level observation plate is pressed against the side wall of the shell by a pressing plate. The liquid level observation window is convenient for monitoring the condition of the lubricating oil in the engine, and is convenient for timely maintenance of the engine, thereby prolonging the service life of the engine.
[0012] Further, in the air aviation heavy oil piston engine air-cooled oil sump, the pressing plate is made of transparent material. The transparent pressing plate is convenient for observing the internal oil state and judging whether the engine needs to be maintained.
[0013] Further, in the air aviation heavy oil piston engine air-cooled oil sump, the drain port is threadedly connected with a drain bolt, and the lowest point of the drain port is lower than the lowest point of the oil storage cavity. When the engine is replaced with new oil, the drain bolt is removed, and the lubricating oil flows out of the lowest drain port due to gravity, thereby reducing the residual amount of lubricating oil, making the oil draining more thorough, and reducing the influence on the new oil. In addition, impurities in the lubricating oil are deposited at the bottom of the oil storage cavity, and these impurities are more easily discharged together with the oil from the lowest drain port during oil draining, thereby reducing the risk of impurities entering the lubricating system and prolonging the service life of the engine.
[0014] Further, in the air aviation heavy oil piston engine air-cooled oil sump, the shell is in a rectangular shape, and the mounting surface is symmetrically arranged left and right. The above structure is simple and has good processing workability.
[0015] The technical scheme has the beneficial effects that: the air-cooled oil sump of the aviation heavy oil piston engine can play a role of sedimentation separation through the oil stabilizing step, avoids the contact between impurities in the oil sump and the filter device, avoids the blockage of the filter device, reduces the impurities entering the lubricating system with oil, and improves the service life of the engine. The heat dissipation fins are arranged to improve the contact area between the shell and air, make the heat more effectively dissipate to air, meet the heat dissipation demand of the high-power engine, and improve the load capacity of the aircraft. The horizontally annular arranged heat dissipation fins can make the airflow effectively penetrate the whole heat dissipation fin area, so that each part of the fin can be well washed by the airflow, the heat on the upper and lower surfaces of the fin is quickly taken away, and the heat dissipation capacity is improved. Meanwhile, the horizontally annular arranged heat dissipation fins have small resistance in the flight process, and meet the aerodynamics. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a top view of the air-cooled oil sump of the aviation heavy oil piston engine of the utility model;
[0017] Figure 2 It is a left view of the air-cooled oil sump of the aviation heavy oil piston engine of the utility model;
[0018] Figure 3 It is a front view of the filter device;
[0019] Figure 4 It is a top view of the filter device;
[0020] Figure 5 It is a sectional view of the air-cooled oil sump of the aviation heavy oil piston engine of the utility model.
[0021] In the drawing: 1, shell, 11, heat dissipation fin, 12, oil port, 13, oil drain port, 14, liquid level observation window, 15, pressing plate, 2, oil storage cavity, 21, oil stabilizing step, 22, filter device, 221, cover part, 222, ear part, 223, filter mesh, 23, mounting surface, 24, through hole, 25, fastener. DETAILED DESCRIPTION
[0022] Example 1
[0023] As Figures 1-2The air-cooled oil sump of an aviation heavy oil piston engine shown in the figure comprises a shell 1 provided with an oil storage cavity 2 with an upper opening, the shell 1 is integrally connected with heat dissipation fins 11, the side wall of the shell 1 is provided with an oil outlet 12 and a drain port 13, the oil outlet 12 and the drain port 13 are respectively communicated with the oil storage cavity 2, the bottom surface of the oil storage cavity 2 is provided with an oil stabilizing step 21, the oil stabilizing step 21 is arranged close to the oil outlet 12, the top surface of the oil stabilizing step 21 is provided with a filter device 22, the filter device 22 is communicated with the oil outlet 12, an installation surface 23 is arranged around the upper opening of the oil storage cavity 2, a plurality of through holes 24 are arranged along the installation surface 23, and fasteners 25 are respectively arranged in the through holes 24.
[0024] As shown in the figure, Figures 3-4 The air-cooled oil sump of an aviation heavy oil piston engine shown in the figure, the filter device 22 comprises a cover part 221 and an ear part 222, and the cover part 221 is provided with an upper opening; the ear part 222 is arranged around the side wall of the cover part 221, and the cover part 221 and the ear part 222 are integrally formed; the filter device 22 is connected to the top surface of the oil stabilizing step 21 through the ear part 222; a plurality of filter mesh holes 223 are arranged around the side wall of the cover part 221; the side wall of the shell 1 is provided with a liquid level observation window 14, the liquid level observation window 14 is in a strip shape, and the liquid level observation window 14 is vertically arranged; a liquid level observation plate is arranged at the liquid level observation window 14, and the liquid level observation plate is pressed against the side wall of the shell 1 by a pressing plate 15; and the pressing plate 15 is made of transparent material.
[0025] As shown in the figure, Figure 5 The air-cooled oil sump of an aviation heavy oil piston engine shown in the figure, the drain port 13 is threadedly connected with a drain bolt, and the lowest point of the drain port 13 is arranged lower than the lowest point of the oil storage cavity 2.
[0026] The installation surface 23 and the bottom of the crankcase are butted, the fasteners 25 are tightened, and lubricating oil is injected into the oil storage cavity 2 from the oil outlet 12. During the operation of the engine, the lubricating oil is extracted from the oil outlet 12 by an oil pump, the lubricating oil enters the oil storage cavity 2 again from the crankcase through a lubricating system, and a lubricating oil circuit is formed. The lubricating oil in the oil storage cavity 2 is extracted by the oil pump from the oil outlet 12 through the filter device 22, the filter device 22 filters the lubricating oil, avoids impurities from entering the lubricating system, and simultaneously, the filter device 22 is installed on the top surface of the oil stabilizing step 21, and the top surface of the oil stabilizing step 21 is arranged higher than the bottom of the oil storage cavity 2. High-speed airflow flows through the heat dissipation fins 11 to cool the shell 1.
[0027] The above examples are exemplary, and the purpose is to illustrate the technical concept and characteristics of the utility model, so that the understanding can understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model. Any equivalent change or modification according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.
Claims
1. An air-cooled oil pan for an aviation heavy oil piston engine, characterized by: The utility model provides an oil tank, including shell (1), the shell (1) is equipped with the oil storage cavity (2) of upper end opening, the shell (1) is integrally connected with the radiating fin (11), the lateral wall of shell (1) is equipped with oil outlet (12) and oil drain (13), and the oil outlet (12) and oil drain (13) are communicated with the oil storage cavity (2) respectively, the bottom surface of oil storage cavity (2) is equipped with the oil stabilizing step (21), the oil stabilizing step (21) is close to the setting of oil outlet (12), the top surface of oil stabilizing step (21) is installed with filter device (22), and filter device (22) is communicated with oil outlet (12).
2. The air-cooled oil pan for an aviation heavy oil piston engine according to claim 1, characterized in that: The mounting surface (23) is arranged around the upper end opening of the oil storage cavity (2), a plurality of through holes (24) are arranged along the mounting surface (23), and the through holes (24) are respectively provided with fasteners (25).
3. The air-cooled oil pan for an aviation heavy oil piston engine according to claim 1, characterized in that: The radiating fins (11) are arranged in an array around the lateral wall of the shell (1).
4. The air-cooled oil pan for an aviation heavy oil piston engine according to claim 3, characterized in that: The radiating fins (11) are arranged in a horizontal ring shape.
5. The air-cooled oil pan for an aviation heavy oil piston engine according to claim 1, characterized in that: The filter device (22) includes a cover portion (221) and an ear portion (222), the cover portion (221) has an open lower end, the ear portion (222) is arranged around the lateral wall of the cover portion (221), the cover portion (221) and the ear portion (222) are integrally formed, the filter device (22) is connected to the top surface of the oil stabilizing step (21) through the ear portion (222), and a plurality of filter mesh holes (223) are arranged around the lateral wall of the cover portion (221).
6. The air-cooled oil pan for an aviation heavy oil piston engine according to claim 1, characterized in that: The lateral wall of the shell (1) is provided with a liquid level observation window (14), the liquid level observation window (14) is in a strip shape, and the liquid level observation window (14) is arranged vertically; a liquid level observation plate is arranged at the liquid level observation window (14), and the liquid level observation plate is pressed against the lateral wall of the shell (1) by a pressing plate (15).
7. The air-cooled oil pan for an aviation heavy oil piston engine according to claim 6, characterized in that: The pressing plate (15) is made of transparent material.
8. The air-cooled oil pan for an aviation heavy oil piston engine according to claim 1, characterized in that: The oil drain (13) is threadedly connected with an oil drain bolt, and the lowest point of the oil drain (13) is arranged lower than the lowest point of the oil storage cavity (2).
9. The air-cooled oil pan for an aviation heavy oil piston engine according to claim 2, characterized in that: The shell (1) is arranged in a rectangular shape, and the mounting surface (23) is arranged in a left-right symmetry.