Oil return pipe of supercharger

Abstract

The oil return pipe comprises a pipe body with two open ends, a first flange fixedly connected with one end of the pipe body and a connecting assembly fixedly connected with the other end of the pipe body, and the connecting assembly is connected with an oil pan of an engine through a second flange. The connecting assembly comprises a connecting cylinder and a sealing assembly clamped on the outer side of the connecting cylinder. The sealing assembly comprises an annular protection ring and an annular sealing ring clamped on the outer side of the protection ring. The protection ring comprises a protection ring body, an annular first groove formed in the outer side wall of the protection ring body, and shock pads arranged on the upper side wall and the lower side wall of the first groove correspondingly. According to the oil return pipe of the supercharger, due to the fact that the sealing assembly is arranged, the problem that a sealing ring of the oil return pipe of the supercharger is short of protection is solved, and the sealing ring is prevented from being directly exposed to mechanical impact and abrasion to a certain extent; and the oil leakage risk of the oil return pipe of the supercharger caused by reduction of the sealing performance of the sealing ring or displacement of the sealing ring is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a turbocharger oil return pipe. Background Technology

[0002] A turbocharger is an engine intake booster that uses the energy of exhaust gases from the engine to drive a turbine to rotate, which in turn drives a coaxial compressor impeller. The compressor impeller compresses more air and sends it into the engine combustion chamber, thereby increasing the intake volume of the engine cylinders and improving the engine's fuel efficiency and power output.

[0003] In the operation of a turbocharger, lubricating oil plays a crucial role. On one hand, it provides necessary lubrication to the internal components of the turbocharger to reduce frictional losses. On the other hand, it also cools the turbine and compressor impeller, ensuring that the operating temperature of these high-speed rotating components remains within a safe range. However, as the turbocharger continues to operate, the lubricating oil absorbs heat, and its own temperature gradually rises, leading to a decline in its performance and deterioration. Therefore, timely and smooth return of used lubricating oil to the engine's oil pan for cooling, filtration, purification, and recycling is key to ensuring the stable operation of the turbocharger.

[0004] The turbocharger return line, connecting the turbocharger to the engine's oil pan, is a crucial component for ensuring the timely and smooth return of used lubricating oil from the turbocharger to the engine's oil pan. However, in practical applications, the seals on the turbocharger return line are prone to damage and aging due to prolonged exposure to mechanical shock and wear. This leads to a decline in the seal's sealing performance, and such seal failure can cause lubricating oil leakage from the return line and its connections, thereby affecting the effectiveness of the lubrication system and the stable operation of the turbocharger.

[0005] Therefore, this solution proposes a turbocharger return oil pipe to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this utility model is to provide a turbocharger return oil pipe that solves the problem of insufficient protection of the sealing ring of the turbocharger return oil pipe. To a certain extent, it avoids the sealing ring being directly exposed to mechanical impact and wear, and reduces the risk of oil leakage caused by the deterioration of the sealing performance of the sealing ring or the displacement of the sealing ring.

[0007] To achieve the above objectives, this utility model proposes a turbocharger return oil pipe, comprising a pipe body open at both ends, a first flange fixedly connected to one end of the pipe body, and a connecting assembly fixedly connected to the other end of the pipe body. The connecting assembly is connected to the engine oil pan through a second flange.

[0008] The connecting assembly includes a connecting cylinder and a sealing assembly that is snapped onto the outside of the connecting cylinder;

[0009] The sealing assembly includes an annular protective ring and an annular sealing ring that is engaged with the outside of the protective ring.

[0010] Furthermore, the protective ring includes a protective ring body, an annular first groove disposed on the outer side wall of the protective ring body, and shock-absorbing pads disposed on the upper and lower side walls of the first groove respectively;

[0011] Multiple sealing ring limiting holes are provided on the side wall of the first groove.

[0012] Furthermore, multiple limiting protrusions are provided on the inner wall of the sealing ring.

[0013] Furthermore, an annular second groove and an annular third groove are provided on the outer wall of the connecting cylinder;

[0014] The second groove is located at one end close to the tube body, and the third groove is located at the end away from the tube body;

[0015] The second flange is fitted into the second groove;

[0016] The sealing component is engaged in the third groove.

[0017] Furthermore, the pipe body includes a first oil pipe with one end fixedly connected to the first flange, a bellows with one end fixedly connected to the other end of the first oil pipe, and a second oil pipe with one end fixedly connected to the other end of the bellows, the other end of the second oil pipe being fixedly connected to the inner wall of the connecting cylinder.

[0018] Furthermore, the body of the first flange is provided with a hollowed-out limiting hole and a hollowed-out bolt hole, and a limiting groove is provided on the inner side wall of the limiting hole.

[0019] The second flange body is provided with two hollowed-out limiting holes and two hollowed-out bolt holes.

[0020] The beneficial effects of this utility model are as follows:

[0021] (1) The sealing assembly of this solution is designed by inserting the sealing ring into the first groove of the protective ring and setting shock-absorbing pads on the upper and lower side walls of the first groove. On the one hand, the shock-absorbing pads can absorb the vibration energy generated during engine operation and reduce the mechanical impact on the sealing ring to a certain extent. On the other hand, the protective ring, as a support structure set between the cylinder and the sealing ring, can further isolate the mechanical impact of engine vibration on the sealing ring. Through this dual protection, the aging speed of the sealing ring is slowed down, the risk of deformation, damage and failure of the sealing ring caused by engine vibration is reduced, the sealing ring can maintain stable sealing performance, and the risk of oil leakage in the turbocharger return oil pipe caused by the deterioration of the sealing ring performance is reduced.

[0022] (2) The sealing assembly of this solution sets a sealing ring limiting hole on the side wall of the first groove and sets a limiting protrusion on the inner side wall where the sealing ring contacts the first groove. The sealing ring is further fixed by the interference fit between the sealing ring limiting hole and the limiting protrusion. To a certain extent, this can prevent the sealing ring from shifting or loosening due to engine vibration, and reduce the risk of oil leakage in the turbocharger return oil pipe caused by the displacement of the sealing ring. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the turbocharger return oil pipe of this utility model.

[0024] Figure 2 This is a schematic diagram of the connection assembly of the turbocharger return oil pipe of this utility model.

[0025] Figure 3 This is a schematic diagram of the connecting cylinder of the turbocharger return oil pipe of this utility model.

[0026] Figure 4 This is a schematic diagram of the sealing assembly of the turbocharger return oil pipe of this utility model. Figure 1 .

[0027] Figure 5 This is a schematic diagram of the protective ring for the turbocharger return oil pipe of this utility model.

[0028] Figure 6 This is a schematic diagram of the sealing ring structure of the turbocharger return oil pipe of this utility model.

[0029] Figure 7 This is a schematic diagram of the structure of the second flange of the turbocharger return oil pipe of this utility model.

[0030] Figure 8 This is a schematic diagram of the structure of the first flange of the turbocharger return oil pipe of this utility model.

[0031] The attached figures are labeled as follows: 1. Pipe body; 11. First oil pipe; 12. Bellows; 13. Second oil pipe; 2. First flange; 21. Limiting hole one; 22. Bolt hole one; 23. Limiting groove one; 3. Connecting assembly; 31. Connecting cylinder; 311. Second groove; 312. Third groove; 32. Sealing assembly; 321. Protective ring; 3211. Protective ring body; 3212. First groove; 3213. Shock-absorbing pad; 3214. Limiting hole; 322. Sealing ring; 3221. Limiting protrusion; 4. Second flange; 41. Limiting hole two; 43. Limiting groove two. Detailed Implementation

[0032] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0033] like Figures 1-8 As shown, a turbocharger return oil pipe includes a pipe body 1 with openings at both ends, a first flange 2 fixedly connected to one end of the pipe body 1, and a connecting assembly 3 fixedly connected to the other end of the pipe body 1. The connecting assembly 3 is connected to the oil pan of the engine through a second flange 4.

[0034] The connecting assembly 3 includes a connecting cylinder 31 and a sealing assembly 32 that is snapped onto the outside of the connecting cylinder 31;

[0035] The sealing assembly 32 includes an annular protective ring 321 and an annular sealing ring 322 that is engaged outside the protective ring 321.

[0036] Preferably, the pipe body 1 is open at both ends and is the main channel of the oil return pipe, used to guide the lubricating oil used inside the turbocharger back to the oil pan of the engine in a timely and smooth manner.

[0037] Preferably, one end of the pipe body 1 is fixed to the outlet of the turbocharger via the first flange 2, and the other end of the pipe body 1 is connected to the oil pan of the engine via the connecting assembly 3 and the second flange 4.

[0038] Furthermore, the protective ring 321 includes a protective ring body 3211, an annular first groove 3212 disposed on the outer side wall of the protective ring body 3211, and shock-absorbing pads 3213 disposed on the upper and lower side walls of the first groove 3212 respectively.

[0039] Multiple sealing ring limiting holes 3214 are provided on the side wall of the first groove 3212.

[0040] Furthermore, multiple limiting protrusions 3221 are provided on the inner wall of the sealing ring 322.

[0041] Preferably, the protective ring body 3211 is made of stainless steel and is fitted into the third groove on the outer side wall of the connecting cylinder 31 to protect the sealing ring 322.

[0042] Preferably, the sealing ring 322 is fitted into the first groove 3212 on the outer side wall of the protective ring body 3211, and shock-absorbing pads 3212 are provided on the upper and lower side walls of the first groove 3212 that contact the sealing ring 322.

[0043] Preferably, the shock absorber 3212 is made of rubber, which is used to absorb the mechanical vibration generated during engine operation, to a certain extent preventing the mechanical vibration from acting directly on the sealing ring 322, and can provide a certain sealing effect.

[0044] Preferably, the sidewall of the first groove 3212 is provided with a plurality of evenly distributed sealing ring limiting holes 3214, which, through an interference fit with a plurality of limiting protrusions 3221 on the inner sidewall of the sealing ring 322, further fix the position of the sealing ring 322. To a certain extent, this can prevent the sealing ring 322 from shifting or loosening due to engine vibration, and reduce the risk of oil leakage in the turbocharger return oil pipe caused by the displacement of the sealing ring.

[0045] Furthermore, an annular second groove 311 and an annular third groove 312 are provided on the outer side wall of the connecting cylinder 31;

[0046] The second groove 311 is provided at one end close to the tube body 1, and the third groove 312 is provided at one end away from the tube body 1;

[0047] The second flange 4 is secured in the second groove 311;

[0048] The sealing component 32 is engaged in the third groove 312.

[0049] Preferably, the outer wall of the connecting cylinder 31 is provided with a second groove 31 for engaging the second flange 4 and a third groove 312 for engaging the sealing assembly 32.

[0050] Preferably, the second flange 4 is used to fix the connecting cylinder 31 to the oil pan of the engine;

[0051] One end of the second flange 4 is fitted into the second groove 311, and the other end is fixedly connected to the oil pan of the engine.

[0052] Preferably, the sealing assembly 3 is used to reduce the risk of oil leakage at the connection between the connecting cylinder 31 and the engine oil pan.

[0053] Furthermore, the pipe body 1 includes a first oil pipe 11 fixedly connected to the first flange 2 at one end, a bellows 12 fixedly connected to the other end of the first oil pipe 11 at one end, and a second oil pipe 13 fixedly connected to the other end of the bellows 12 at one end. The other end of the second oil pipe 13 is fixedly connected to the inner wall of the connecting cylinder 31.

[0054] Preferably, the pipe body 1 includes a first oil pipe 11, a corrugated pipe 12, and a second oil pipe 13. The first oil pipe 11 and the corrugated pipe 12 are welded together, and the corrugated pipe 12 and the second oil pipe 13 are welded together.

[0055] Preferably, the bellows 12 is used to compensate for the thermal expansion of the return oil pipe during operation and to absorb engine vibration;

[0056] The bellows 12 is existing technology and will not be described in detail here.

[0057] Furthermore, the body of the first flange 2 is provided with a hollowed-out limiting hole 21 and a hollowed-out bolt hole 22, and a limiting groove 23 is provided on the inner side wall of the limiting hole 21.

[0058] The second flange 4 has a hollowed-out limiting hole 41 and a hollowed-out bolt hole 42 on its body.

[0059] Preferably, the limiting groove 23 is used to lock the end of the pipe body 1 that is fixedly connected to the turbocharger, and the hollow bolt hole 22 is used to fix the first flange 2 to the vicinity of the turbocharger lubricating oil outlet end by bolt connection.

[0060] Preferably, the diameter of the turbocharger lubricating oil outlet is smaller than the diameter of the pipe body 1.

[0061] Preferably, the limiting hole 41 is fitted onto the connecting cylinder 31, and the hollow bolt hole 42 is used to fix the second flange 4 onto the engine oil pan, that is, to fix the connecting cylinder 31 onto the engine oil pan, and further fix the pipe body 1 onto the engine oil pan.

[0062] Preferably, the diameter of the port of the oil return pipe on the oil pan of the engine is larger than the diameter of the pipe body 1.

[0063] The specific working process of this utility model:

[0064] The lubricating oil generated by the turbocharger during operation enters the pipe body 1, flows through the first oil pipe 11, the bellows 12, and the second oil pipe 13 in sequence, and then flows into the inner wall of the connecting cylinder 31, and finally enters the oil pan of the engine.

[0065] Among them, the protective ring 321 and the sealing ring 322 in the sealing assembly 32 ensure the sealing of the lubricating oil at the connection assembly 3; the shock-absorbing pad 3213 on the protective ring 321 absorbs the vibration generated during engine operation and reduces the impact of vibration on the sealing ring 322; the limiting protrusion 3221 on the sealing ring 322 and the sealing ring limiting hole 3214 on the protective ring body 3211 are interference-fitted to further limit the position of the sealing ring 322 and reduce the risk of oil leakage caused by the positional deviation of the sealing ring 322.

[0066] The above are merely preferred embodiments of this utility model and do not constitute any limitation on this utility model. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and contents disclosed in this utility model without departing from the scope of the technical solutions of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A turbocharger return oil pipe, characterized in that, It includes a pipe body (1) with openings at both ends, a first flange (2) fixedly connected to one end of the pipe body (1), and a connecting assembly (3) fixedly connected to the other end of the pipe body (1). The connecting assembly (3) is connected to the oil pan of the engine through a second flange (4). The connecting assembly (3) includes a connecting cylinder (31) and a sealing assembly (32) that is fitted onto the outside of the connecting cylinder (31). The sealing assembly (32) includes an annular protective ring (321) and an annular sealing ring (322) that is engaged with the outside of the protective ring (321).

2. The turbocharger return oil pipe according to claim 1, characterized in that, The protective ring (321) includes a protective ring body (3211), an annular first groove (3212) disposed on the outer side wall of the protective ring body (3211), and shock-absorbing pads (3213) disposed on the upper and lower side walls of the first groove (3212). The first groove (3212) has multiple sealing ring limiting holes (3214) on its side wall.

3. The turbocharger return oil pipe according to claim 1, characterized in that, The inner wall of the sealing ring (322) is provided with multiple limiting protrusions (3221).

4. The turbocharger return oil pipe according to claim 1, characterized in that, The outer wall of the connecting cylinder (31) is provided with an annular second groove (311) and an annular third groove (312). The second groove (311) is provided at one end close to the tube body (1), and the third groove (312) is provided at the end away from the tube body (1); The second flange (4) is engaged in the second groove (311); The sealing component (32) is engaged in the third groove (312).

5. A turbocharger return oil pipe according to claim 1, characterized in that, The pipe body (1) includes a first oil pipe (11) fixedly connected to the first flange (2) at one end, a corrugated pipe (12) fixedly connected to the other end of the first oil pipe (11) at one end, and a second oil pipe (13) fixedly connected to the other end of the corrugated pipe (12) at one end. The other end of the second oil pipe (13) is fixedly connected to the inner wall of the connecting cylinder (31).

6. The turbocharger return oil pipe according to claim 1, characterized in that, The first flange (2) has a hollowed-out limiting hole (21) and a hollowed-out bolt hole (22) on its body. A limiting groove (23) is provided on the inner side wall of the limiting hole (21). The second flange (4) has a hollowed-out limiting hole 2 (41) and a hollowed-out bolt hole 2 (42) on its body.

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