High-efficiency gasoline engine turbocharger

Abstract

The utility model discloses a high-efficiency gasoline engine turbocharger which comprises an air outlet shell, an air inlet and an air outlet. One end of the air inlet shell is communicated with an air inlet; connecting flange plates are fixedly arranged on the connecting end faces of the air outlet shell and the air inlet shell. A sealing assembly is arranged between the connecting flange plates at the air outlet shell and the air inlet shell and comprises a sealing piece, the two ends of the sealing piece extend into the air outlet shell and the air inlet shell respectively, and the middle of the sealing piece is located between the connecting flange plates at the air outlet shell and the air inlet shell. According to the utility model, multiple and reliable sealing structures are constructed at the connecting part of the turbocharger of the gasoline engine, so that the sealing performance is obviously enhanced, the leakage risk possibly occurring in the working process is also avoided, and due to the adoption of the multiple sealing structures, under the high-load running state of the turbocharger, the sealing performance of the turbocharger is greatly improved. Even in engine oil, fuel oil and high-temperature and high-pressure severe environments, tight and gapless joints can be ensured.

Description

Technical Field

[0001] This utility model belongs to the field of turbocharger technology, specifically relating to a high-efficiency gasoline engine turbocharger. Background Technology

[0002] A gasoline engine turbocharger is an air compressor that uses exhaust gases from the engine to drive a turbine, which in turn drives a coaxial impeller to compress air supplied through the air filter, forcing it into the cylinders. During this process, the increased air pressure and density allow the engine to burn more fuel, thereby increasing the engine's output power. Turbochargers also offer advantages such as optimized emissions and improved fuel economy.

[0003] Currently, gasoline engine turbochargers generally employ a relatively simple sealing design at the connection points, using only a single sealing ring. While this design meets basic sealing requirements to some extent, its sealing performance is often unsatisfactory in practical applications.

[0004] Specifically, due to the complex and variable working environment, such as high temperature, high pressure, and corrosion from engine oil and fuel, a single sealing ring structure is easily damaged, leading to a decrease in sealing performance. Once the seal is not tight, it will not only cause engine oil leakage, affecting the engine's lubrication system, but may also cause boost air leakage, thereby reducing the efficiency of the turbocharger.

[0005] In addition, poor sealing can trigger a series of chain reactions, such as overheating of turbocharger bearings and accelerated wear, all of which will seriously affect the overall performance and reliability of the engine. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency gasoline engine turbocharger to solve the problem mentioned in the background art that the existing turbochargers have poor sealing performance, which affects the efficiency of the turbocharger.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency gasoline engine turbocharger, including an exhaust housing with an exhaust port at one end; an intake housing with an intake port at one end; connecting flanges are fixedly provided at the connecting end faces of the exhaust housing and the intake housing; a sealing assembly is provided between the connecting flanges at the exhaust housing and the intake housing, the sealing assembly including: a sealing element, with both ends extending into the interior of the exhaust housing and the intake housing respectively, and the middle part of the sealing element located between the connecting flanges at the exhaust housing and the intake housing, thereby achieving internal sealing by extending the sealing element into the two connecting flanges, and the middle part of the sealing element located between the exhaust housing and the intake housing, allowing for installation by overlapping, while preventing internal gas leakage; and multiple sets of sealing elements distributed on the inner wall of the sealing ring, achieving multiple seals within the connecting flanges through the sealing elements.

[0008] Preferably, the sealing element includes a sealing ring and an integrally fixed mounting ring in the middle of the outer surface of the sealing ring. The mounting ring overlaps the outer surface of the connecting flange, while the sealing ring is located inside the connecting flange, thereby achieving an initial seal. The sealing element is located on the inner wall of the sealing ring.

[0009] Preferably, the sealing component includes an integrally formed sealing protrusion on the inner wall of the sealing ring, which is symmetrically distributed along the centerline of the mounting ring. The inner wall of the connecting flange is also fixed with a sealing retaining ring, and the end of the sealing ring is located inside the sealing retaining ring. The sealing retaining ring is used to limit and tighten the sealing ring. At the same time, the sealing protrusion abuts against the inner wall of the sealing retaining ring, thereby forming a secondary seal.

[0010] Preferably, the end face of the sealing ring has a fitting portion, and the top inner wall of the sealing retaining ring is inclined and fits with the fitting portion, thereby achieving a seal between the sealing ring and the sealing retaining ring, achieving a third sealing effect.

[0011] Preferably, one end of the sealing ring has connecting threads on its outer wall and the inner wall of the connecting flange, and the two are connected by the connecting threads. During installation, one end of the sealing ring is first connected to the connecting flange through the connecting threads. At this time, the mating part will move towards the inside of the sealing ring to achieve a clamping effect, while the other end can be directly locked by the two connecting flanges.

[0012] Preferably, two guide portions are formed at the middle of the inner side of the sealing ring, symmetrically distributed around the center line of the mounting ring. These guide portions are inclined toward the middle of the sealing ring. With the symmetrical arrangement of the guide portions, in use, whether air is introduced through the air inlet or later adjusted to be introduced through the air outlet, the gas can be guided and concentrated in the middle area near the connecting flange for transmission, further reducing the phenomenon of gas leakage.

[0013] Preferably, the inclination angle of the fitting portion is not equal to the inclination angle of the sealing ring, the bottom of the sealing ring is a vertical portion, and the sealing protrusion abuts against the inner wall of the vertical portion of the sealing ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention utilizes a multi-layered and reliable sealing structure at the connection point of a gasoline engine turbocharger. This significantly enhances sealing performance and effectively mitigates the risk of leakage during operation. The multi-layered sealing structure ensures a tight, gapless connection even under high-load operation and harsh conditions such as oil, fuel, high temperature, and high pressure. This design prevents oil leakage, ensuring stable operation of the engine lubrication system, and also avoids the loss of boost air, thus ensuring the turbocharger can operate continuously and efficiently. Furthermore, the multi-layered sealing structure offers additional advantages, reducing turbocharger bearing overheating and wear caused by poor sealing, further extending the turbocharger's service life. This not only improves overall engine performance but also reduces maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a rear view of the present invention;

[0018] Figure 3 This is a bottom view of the connection between the connecting flange and the sealing assembly of this utility model;

[0019] Figure 4 This is a cross-sectional view of the connection between the flange and the sealing assembly of this utility model;

[0020] Figure 5 This utility model Figure 4 An enlarged schematic diagram of region A in the middle.

[0021] In the picture:

[0022] 100. Exhaust housing; 101. Inlet housing; 102. Inlet; 103. Outlet; 104. Connecting flange; 105. Sealing ring; 106. Sealing retainer ring; 107. Mounting ring; 108. Guide part; 109. Sealing protrusion; 110. Fitting part; 111. Connecting thread. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 5 This utility model provides a technical solution: a high-efficiency gasoline engine turbocharger, comprising...

[0025] The air outlet housing 100 has an air outlet 103 connected to one end;

[0026] The air intake housing 101 has an air intake port 102 connected to one end;

[0027] A connecting flange 104 is fixedly provided at the connection end face of both the air outlet housing 100 and the air inlet housing 101;

[0028] A sealing assembly is provided between the connecting flange 104 at the outlet housing 100 and the inlet housing 101. The sealing assembly includes:

[0029] The sealing element extends into the interior of the outlet housing 100 and the inlet housing 101 at both ends, while the middle part of the sealing element is located between the connecting flanges 104 at the outlet housing 100 and the inlet housing 101. By extending the sealing element into the two connecting flanges 104, an internal seal is achieved. The middle part of the sealing element is located between the outlet housing 100 and the inlet housing 101, and can be installed by overlapping, while preventing leakage of internal gas.

[0030] Multiple sets of sealing components are provided and distributed on the inner wall of the sealing ring 105 to achieve multiple seals within the connecting flange 104.

[0031] In this embodiment, preferably, the sealing element includes a sealing ring 105 and an integrally fixed mounting ring 107 on the middle of the outer surface of the sealing ring 105. The mounting ring 107 overlaps the outer surface of the connecting flange 104, while the sealing ring 105 is located inside the connecting flange 104, thereby achieving the initial seal. The sealing element is located on the inner wall of the sealing ring 105.

[0032] In this embodiment, preferably, the sealing component includes a sealing protrusion 109 integrally disposed on the inner wall of the sealing ring 105. The sealing protrusion 109 is symmetrically distributed along the centerline of the mounting ring 107. A sealing retaining ring 106 is also fixedly disposed on the inner wall of the connecting flange 104. The end of the sealing ring 105 is located inside the sealing retaining ring 106. The sealing retaining ring 106 is used to limit and tighten the sealing ring 105. At the same time, the sealing protrusion 109 abuts against the inner wall of the sealing retaining ring 106, thereby forming a secondary seal.

[0033] In this embodiment, preferably, the end face of the sealing ring 105 is formed with a fitting portion 110, and the top inner wall of the sealing retaining ring 106 is inclined and fits with the fitting portion 110, thereby achieving the sealing of the sealing ring 105 and the sealing retaining ring 106, achieving the effect of a third seal.

[0034] In this embodiment, preferably, one end of the sealing ring 105 is provided with connecting threads 111 on the outer wall and the inner wall of the connecting flange 104, and the two are connected by the connecting threads 111. During installation, one end of the sealing ring 105 is first connected to the connecting flange 104 through the connecting threads 111. At this time, the fitting part 110 will move toward the inside of the sealing retaining ring 106 to achieve a clamping effect, while the other end can be directly locked by the two connecting flanges 104.

[0035] In this embodiment, preferably, two guide portions 108 are formed at the middle of the inner side of the sealing ring 105, symmetrically distributed with respect to the center line of the mounting ring 107. The guide portions 108 are inclined toward the middle position of the sealing ring 105. With the symmetrical guide portions 108, in use, whether air is introduced through the air inlet 102 or later adjusted to be introduced through the air outlet 103, the gas can be guided and concentrated in the middle area near the connecting flange 104 for transmission, further reducing the phenomenon of gas leakage.

[0036] In this embodiment, preferably, the tilt angle of the fitting part 110 is not equal to the tilt angle of the sealing ring 106, the bottom of the sealing ring 106 is a vertical part, and the sealing protrusion 109 abuts against the inner wall of the vertical part of the sealing ring 106.

[0037] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency turbocharger for gasoline engines, comprising an outlet casing (100) having an outlet port (103) at one end; an inlet casing (101) having an inlet port (102) at one end; a connecting flange (104) is fixedly arranged at the connecting end face of the outlet casing (100) and the inlet casing (101); characterized in that a sealing assembly is arranged between the connecting flanges (104) of the outlet casing (100) and the inlet casing (101), which sealing assembly comprises a sealing ring (105) extending into the interiors of the outlet casing (100) and the inlet casing (101) at both ends, and the middle part of the sealing ring (105) is between the connecting flanges (104) of the outlet casing (100) and the inlet casing (101); the sealing ring (105) comprises a sealing ring (105) and an installation ring (107) integrally arranged at the middle part of the outer surface of the sealing ring (105), the installation ring (107) overlaps the outer surface of the connecting flange (104), and the sealing ring (105) is inside the connecting flange (104); a plurality of sets of blocking pieces are arranged at the inner wall of the sealing ring (105).

2. The high efficiency gasoline engine turbocharger of claim 1, wherein: the blocking pieces comprise sealing protrusions (109) integrally arranged at the inner wall of the sealing ring (105), which are symmetrically distributed along the middle line of the installation ring (107), the inner wall of the connecting flange (104) is further provided with a sealing baffle (106), the end of the sealing ring (105) is inside the sealing baffle (106), and the sealing protrusions (109) abut against the inner wall of the sealing baffle (106).

3. The high efficiency gasoline engine turbocharger of claim 2, wherein: the end face of the sealing ring (105) is formed with a fitting part (110), and the top inner wall of the sealing baffle (106) is inclined and abuts against the fitting part (110).

4. The high efficiency gasoline engine turbocharger of claim 2, wherein: one end of the sealing ring (105) is provided with a connecting thread (111) on the outer wall, and the inner wall of the connecting flange (104) is also provided with a connecting thread (111), and the two are connected through the connecting thread (111).

5. The high efficiency gasoline engine turbocharger of claim 2, wherein: two guide parts (108) symmetrically distributed along the middle line of the installation ring (107) are formed at the middle part of the inner side of the sealing ring (105), and the guide parts (108) are inclined towards the middle part of the sealing ring (105).

6. The high efficiency gasoline engine turbocharger of claim 3, wherein: the inclination angle of the fitting part (110) is not equal to the inclination angle of the sealing baffle (106), the bottom of the sealing baffle (106) is a vertical part, and the sealing protrusions (109) abut against the inner wall of the vertical part of the sealing baffle (106).

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