Lubricating structure of turbocharger

Abstract

The utility model provides a turbocharger lubricating structure, and belongs to the technical field of turbochargers. The problems that a shaft body of an existing turbocharger in the market rotates at a high speed, a large amount of heat and friction are generated, the internal temperature of the turbocharger is high, abrasion between rotating parts is increased, and the service life of the turbocharger is shortened are solved. The turbocharger lubricating structure comprises a turbocharger body composed of a middle body, a transmission shaft, a turbine volute, a turbine impeller, a gas compressor volute and a gas compressor impeller, an oil channel and a flow dividing groove are formed in the inner wall of the middle body, the oil channel is communicated with the flow dividing groove, and a plurality of oil outlet holes are formed between the flow dividing groove and the transmission shaft. The turbocharger has the advantages that lubricating oil is shunted, so that the oil can be in contact with the surface of a transmission shaft in a larger area, the transmission shaft is lubricated and cooled, and the service life of the turbocharger is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of turbochargers, and relates to a turbocharger, in particular to a lubrication structure of a turbocharger. Background Technique

[0002] A turbocharger is actually an air compressor that increases the intake air volume by compressing air. It uses the inertial impulse of the exhaust gas discharged from the engine to drive the turbine in the turbine chamber, and the turbine drives the coaxial impeller. The impeller compresses the air sent from the air filter pipeline and makes it pressurized and enter the cylinder.

[0003] When the turbocharger on the existing market is working, the shaft body will rotate at a high speed, so a large amount of heat and friction will be generated. If the shaft body is not lubricated, the internal temperature of the turbocharger will be relatively high, increasing the wear between the rotating parts and shortening the service life of the turbocharger. Therefore, it is of great significance to design a lubrication structure for the turbocharger. Summary of the Invention

[0004] The purpose of the utility model is to provide a lubrication structure for a turbocharger aiming at the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved by the following technical solutions: A lubrication structure for a turbocharger includes a turbocharger main body composed of an intermediate body, a transmission shaft, a turbine housing, a turbine impeller, a compressor housing, and a compressor impeller. The characteristics are that an oil passage and a diversion groove are arranged on the inner wall of the intermediate body, and the oil passage is communicated with the diversion groove. A plurality of oil outlet holes are arranged between the diversion groove and the transmission shaft, and a throttling ball is clamped on the inner wall of the oil outlet hole.

[0006] In the above-mentioned lubrication structure for a turbocharger, a sealing groove is arranged at the oil inlet of the oil passage, a sealing ring is clamped in the sealing groove, a plurality of clamping grooves are arranged in the sealing groove, and a plurality of convex blocks clamped in the clamping grooves are arranged on the outer side of the sealing ring.

[0007] In the above-mentioned lubrication structure for a turbocharger, a sealing bolt is arranged at the oil inlet of the oil passage, and a thread for fitting with the sealing bolt is arranged in the oil passage.

[0008] In the above-mentioned lubrication structure for a turbocharger, an exhaust passage is arranged in the turbine housing, and an intake passage is arranged in the compressor housing.

[0009] Compared with the prior art, the lubrication structure of this turbocharger diverts the lubricating oil so that the oil can come into contact with the surface of the transmission shaft over a larger area, lubricating and cooling the transmission shaft, and extending the service life of the turbocharger. By setting a throttle ball in the oil outlet hole, the flow rate of the oil can be controlled to ensure that the oil is supplied to the transmission shaft at an appropriate speed and pressure, thereby improving the lubrication effect. Description of the Drawings

[0010] Figure 1 is a three-dimensional schematic diagram of the lubrication structure of this turbocharger.

[0011] Figure 2 is a schematic diagram of the separation of the sealing ring of the lubrication structure of this turbocharger.

[0012] Figure 3 is the Figure 1 schematic diagram of the structure at position A in the lubrication structure of this turbocharger.

[0013] Figure 4 is the Figure 2 schematic diagram of the structure at position B in the lubrication structure of this turbocharger.

[0014] In the figure, 1 is the turbocharger main body; 2 is the intermediate body; 3 is the transmission shaft; 4 is the turbine volute; 5 is the turbine impeller; 6 is the compressor volute; 7 is the compressor impeller; 8 is the oil passage; 9 is the diversion groove; 10 is the oil outlet hole; 11 is the throttle ball; 12 is the sealing groove; 13 is the sealing ring; 14 is the clamping groove; 15 is the convex block; 16 is the sealing bolt; 17 is the exhaust passage; 18 is the intake passage. Detailed Embodiment

[0015] The following are specific embodiments of the present invention and in combination with the drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0016] As Figure 1 , 2 , 3, and 4 show, the lubrication structure of this turbocharger includes the turbocharger main body 1 composed of the intermediate body 2, the transmission shaft 3, the turbine volute 4, the turbine impeller 5, the compressor volute 6, and the compressor impeller 7. The inner wall of the intermediate body 2 is provided with an oil passage 8 and a diversion groove 9, and the oil passage 8 is communicated with the diversion groove 9. A plurality of oil outlet holes 10 are arranged between the diversion groove 9 and the transmission shaft 3, and a throttle ball 11 is clamped on the inner wall of the oil outlet hole 10. By adding lubricating oil into the oil passage 8, the lubricating oil enters the diversion groove 9 and is diverted into the oil outlet holes 10. The oil is transported to the surface of the transmission shaft 3 through the oil outlet holes 10 to lubricate and cool the transmission shaft 3. The throttle ball 11 in the oil outlet hole 10 can control the flow rate of the oil to ensure that the oil is supplied to the transmission shaft 3 at an appropriate speed and pressure, thereby improving the lubrication effect.

[0017] Preferably, a sealing groove 12 is provided at the oil inlet of the oil passage 8. A sealing ring 13 is clamped in the sealing groove 12. A plurality of clamping grooves 14 are formed in the sealing groove 12. A plurality of bumps 15 are provided on the outer side of the sealing ring 13 and are clamped in the clamping grooves 14. The sealing ring 13 is clamped to the oil inlet of the oil passage 8 through the bumps 15, so as to seal the oil passage 8 and prevent oil leakage.

[0018] Preferably, a sealing bolt 16 is provided at the oil inlet of the oil passage 8, and a thread for fitting with the sealing bolt 16 is provided in the oil passage 8. The sealing bolt 16 and the sealing ring 13 act together to seal the oil passage 8.

[0019] Preferably, an exhaust passage 17 is provided in the turbine housing 4, and an intake passage 18 is provided in the compressor housing 6.

[0020] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains may make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0021] Although terms such as turbine supercharger body 1, intermediate body 2, transmission shaft 3, turbine housing 4, turbine impeller 5, compressor housing 6, compressor impeller 7, oil passage 8, shunt groove 9, oil outlet hole 10, throttle ball 11, sealing groove 12, sealing ring 13, clamping groove 14, bump 15, sealing bolt 16, exhaust passage 17, intake passage 18, etc. are used more in this article, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A turbocharger lubrication structure, comprising a turbocharger body (1) consisting of an intermediate body (2), a transmission shaft (3), a turbine volute (4), a turbine impeller (5), a compressor volute (6) and a compressor impeller (7), characterized in that: The inner wall of the intermediate body (2) is provided with an oil passage (8) and a diverter groove (9), and the oil passage (8) is connected to the diverter groove (9). A plurality of oil outlet holes (10) are provided between the diverter groove (9) and the transmission shaft (3), and a throttling ball (11) is clamped on the inner wall of the oil outlet hole (10).

2. A turbocharger lubrication structure according to claim 1, characterized in that: A sealing groove (12) is provided at the oil inlet of the oil passage (8), a sealing ring (13) is clamped in the sealing groove (12), a plurality of clamping grooves (14) are provided in the sealing groove (12), and a plurality of protrusions (15) clamped in the clamping grooves (14) are provided on the outside of the sealing ring (13).

3. A turbocharger lubrication structure according to claim 1, characterized in that: A sealing plug (16) is provided at the oil inlet of the oil passage (8), and a thread engaging with the sealing plug (16) is provided in the oil passage (8).

4. A turbocharger lubrication structure according to claim 1, characterized in that: An exhaust passage (17) is arranged in the turbine volute (4), and an intake passage (18) is arranged in the compressor volute (6).

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