Pressurized intake device, intake system, and vehicle

Abstract

The utility model belongs to vehicle air intake system technical field discloses a kind of pre-compression air intake device, air intake system and vehicle.The pre-compression air intake device includes pre-compression air intake pipe and exhaust pipe.The pre-compression air intake pipe is communicated between air source and the supercharger of air intake system, and is configured to introduce air into the supercharger.The exhaust pipe is connected between pre-compression air intake pipe and the anti-surge valve of the air intake system, the outlet of the exhaust pipe is communicated with the inside of the pre-compression air intake pipe, and is configured to introduce the exhaust of the anti-surge valve into the pre-compression air intake pipe, and the exhaust of the anti-surge valve can be injected into the pre-compression air intake pipe in the form of jet.The distance between the inner wall of the pre-compression air intake pipe opposite the outlet of the exhaust pipe and the outlet of the exhaust pipe is x along the axial direction of the exhaust pipe, the outlet diameter of the exhaust pipe is D, and x>6.2D.The pre-compression air intake device can reduce the injection noise of the anti-surge valve exhaust and improve the user experience of the driver and passenger.

Description

Technical Field

[0001] This utility model relates to the field of vehicle air intake system technology, and in particular to a pressure-driven air intake device, air intake system and vehicle. Background Technology

[0002] A vehicle's engine intake system typically includes a turbocharged intake manifold 1, a turbocharger, a throttle valve, a mixer, and an anti-surge valve. The turbocharged intake manifold 1, turbocharger, throttle valve, and mixer are connected sequentially, and the turbocharged intake manifold 1 and the intake pipe before the throttle valve are connected via a turbocharger connecting pipe. The anti-surge valve is integrated into the turbocharger connecting pipe, and the anti-surge valve exhaust pipe 2 connects to the interior of the turbocharged intake manifold 1. Figure 1 As shown. The turbocharger is used to pressurize the air, the throttle valve is used to control the airflow, and the mixer is used to mix the fuel gas and air.

[0003] When the vehicle shifts gears and momentarily releases the accelerator, the throttle valve closes instantly, and the anti-surge valve opens instantly. High-pressure gas then leaks into the supercharged intake manifold 1 through the supercharger connection pipe and the anti-surge valve exhaust pipe 2. The high-pressure gas ejected from the anti-surge valve exhaust pipe 2 forms a jet that interacts with the inner wall of the supercharged intake manifold 1. The flow direction of this jet is as follows: Figure 1 As shown by the dashed arrow in the image.

[0004] Because the distance between the outlet of the anti-surge valve exhaust pipe 2 and the inner wall of the booster air pipe 1 is too small in the flow direction of the jet formed by the high-pressure gas, the jet core will directly hit the inner wall of the booster air pipe 1, resulting in a large injection noise, which in turn causes a large noise change in the cab, affecting the experience of the driver or passengers.

[0005] Therefore, there is an urgent need for a compressed air intake device, air intake system, and vehicle to solve the above problems. Utility Model Content

[0006] According to one aspect of the present invention, the objective is to provide a pressure-driven air intake device that can reduce the injection noise of the anti-surge valve exhaust and improve the driver's and passengers' experience of using the vehicle.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] The compressed air intake device includes:

[0009] A pressure inlet manifold, which connects an air source and a supercharger in the intake system, is configured to introduce air into the supercharger.

[0010] An exhaust pipe is connected between the pressure intake manifold and the anti-surge valve of the intake system. The outlet of the exhaust pipe is connected to the interior of the pressure intake manifold and is configured to guide the exhaust gas from the anti-surge valve into the pressure intake manifold. The exhaust gas from the anti-surge valve can be jetted into the pressure intake manifold in a jet manner.

[0011] Along the axial direction of the exhaust pipe, the distance between the inner wall of the pressure inlet pipe directly opposite the outlet of the exhaust pipe and the outlet of the exhaust pipe is x, and the diameter of the exhaust pipe outlet is D, where x > 6.2D.

[0012] As a preferred embodiment of the compressed air intake device provided by this utility model, the compressed air intake pipe is U-shaped and includes a first connecting pipe section, a second connecting pipe section, and a third connecting pipe section connected between the first connecting pipe section and the second connecting pipe section. The ends of the first connecting pipe section and the second connecting pipe section face the same direction. An air source connection connector is provided at the end of the first connecting pipe section and is connected to an air source. A booster connection connector is provided at the end of the second connecting pipe section and is connected to a booster. The exhaust pipe is connected to the third connecting pipe section.

[0013] As a preferred embodiment of the pressure-inlet air device provided by this utility model, a sensor mounting position is provided on the side wall of the first connecting pipe section. The pressure-inlet air device also includes a sensor, which is disposed at the sensor mounting position and is configured to detect the temperature and / or pressure of the air entering the first connecting pipe section.

[0014] As a preferred embodiment of the pre-pressurized air intake device provided by this utility model, the outlet of the exhaust pipe is arranged in the direction of the first connecting pipe section; a guide plate is provided in the first connecting pipe section, and the guide plate is arranged between the sensor mounting position and the outlet of the exhaust pipe in the jet direction of the outlet of the exhaust pipe, and the distance y between the guide plate and the outlet of the exhaust pipe is greater than 6.2D along the jet direction of the outlet of the exhaust pipe.

[0015] As a preferred embodiment of the compressed air intake device provided by this utility model, the compressed air intake device further includes an oil-gas separator connecting pipe, which is connected to the oil-gas separator of the vehicle and the interior of the second connecting pipe section;

[0016] The exhaust pipe is located at one end of the third connecting pipe section near the second connecting pipe section, and the outlet of the exhaust pipe faces the other end of the third connecting pipe section.

[0017] As a preferred embodiment of the compressed air intake device provided by this utility model, the angle α between the axial direction of the exhaust pipe and the axial direction of the second connecting pipe section is 70°.

[0018] As a preferred embodiment of the pressure-inlet air device provided by this utility model, the inner wall of the pressure-inlet air pipe is provided with a sound-absorbing layer.

[0019] As a preferred embodiment of the pressure inlet air device provided by this utility model, the pressure inlet air pipe is a rubber pipe.

[0020] According to another aspect of the present invention, the object is to provide an intake system comprising a turbocharger, a throttle valve, an anti-surge valve, and a pressure-intake device as described in any of the above embodiments, wherein the pressure-intake device, the turbocharger, and the throttle valve are connected in sequence, and the anti-surge valve is connected between the intake pipe of the throttle valve and the exhaust pipe.

[0021] According to another aspect of the present invention, the object is to provide a vehicle comprising an engine and an intake system as described above, the intake system being connected to the cylinder block of the engine.

[0022] The beneficial effects of this utility model are:

[0023] The present invention provides a forced-air intake device comprising a forced-air intake pipe and an exhaust pipe. The forced-air intake pipe connects the air source and the turbocharger of the intake system, and is configured to introduce air into the turbocharger. The exhaust pipe connects the forced-air intake pipe and the anti-surge valve of the intake system, and the outlet of the exhaust pipe connects to the interior of the forced-air intake pipe, configured to guide the exhaust from the anti-surge valve into the forced-air intake pipe. The anti-surge valve can alleviate turbocharger surge caused by sudden engine deceleration and abrupt changes in throttle opening. The exhaust pipe enables gas recovery during sudden changes in throttle opening.

[0024] The exhaust gas from the anti-surge valve is jetted into the pressure inlet pipe. Along the axial direction of the exhaust pipe, the distance between the inner wall of the pressure inlet pipe and the exhaust pipe outlet is x, and the exhaust pipe outlet diameter is D, where x > 6.2D. The exhaust gas from the anti-surge valve is ejected from the exhaust pipe as a jet. A complete jet consists of an initial section and a main section. The initial section forms the jet core, where the airflow velocity is high, while the airflow velocity in the main section decreases significantly. Therefore, the jet noise generated when the initial section of the jet impacts the inner wall of the pressure inlet pipe is relatively high, while the jet noise generated when the main section of the jet impacts the inner wall of the pressure inlet pipe is relatively low. According to calculations, the relationship between the length L0 of the initial jet section and the exhaust pipe outlet diameter D is L0 = 6.2D. Because the airflow velocity remains constant in the initial section of the jet, but changes along the jet axis as the jet length increases in the main body section, with the velocity decreasing as the jet length increases, a design with x > 6.2D can effectively reduce the jet noise between the exhaust from the anti-surge valve and the inner wall of the intake manifold, thus improving the driver's and passengers' experience of using the vehicle.

[0025] The intake system provided by this utility model, by setting the above-mentioned pressure intake device, can realize the intake of the turbocharger, and can release the high-pressure gas in the intake pipe of the throttle valve after the throttle valve is suddenly closed, and can effectively reduce the exhaust noise of the anti-surge valve.

[0026] The vehicle provided by this utility model, by setting the above-mentioned air intake system, realizes the intake of the engine and can reduce the noise of the air intake system during vehicle shifting and instantaneous release of accelerator. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the supercharged inlet pipe and the anti-surge valve exhaust pipe in the existing technology;

[0029] Figure 2 This is a schematic diagram of the air intake system provided in Embodiment 1 of this utility model;

[0030] Figure 3 This is a schematic diagram of the compressed air intake device provided in Embodiment 1 of this utility model;

[0031] Figure 4 This is a schematic diagram of the pressure-forward air intake device provided in Embodiment 2 of this utility model.

[0032] In the picture:

[0033] 1. Boost intake manifold; 2. Anti-surge exhaust manifold;

[0034] 10. Turbocharger; 20. Throttle valve; 21. Intake manifold; 30. Anti-surge valve; 40. Mixer;

[0035] 100. Inlet intake pipe; 110. First connecting pipe section; 111. Air source connection connector; 112. Deflector; 113. Sensor mounting position; 120. Second connecting pipe section; 121. Turbocharger connection connector; 130. Third connecting pipe section;

[0036] 200. Exhaust pipe;

[0037] 300. Oil-gas separator connecting pipe. Detailed Implementation

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connect," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In this embodiment, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0046] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0047] Example 1

[0048] Figure 2 This diagram shows an intake system provided in Embodiment 1 of the present invention. Figure 3 A schematic diagram of the compressed air intake device provided in Embodiment 1 of this utility model is shown. (Refer to...) Figure 2 and Figure 3 This embodiment provides a pressure-driven air intake device, an air intake system, and a vehicle.

[0049] The vehicle provided in this embodiment includes an engine and an intake system provided in this embodiment. The intake system is connected to the cylinder block of the engine to supply air to the engine.

[0050] The intake system provided in this embodiment includes a turbocharger 10, a throttle valve 20, an anti-surge valve 30, and a pressure-intake device provided in this embodiment. The pressure-intake device, the turbocharger 10, and the throttle valve 20 are connected sequentially. The anti-surge valve 30 is connected between the intake pipe 21 of the throttle valve 20 and the pressure-intake device. The throttle valve 20 is connected to the engine block via a mixer 40. The pressure-intake device is connected between the air source and the turbocharger 10. The turbocharger 10 is used to pressurize the air, the throttle valve 20 is used to control airflow, and the mixer 40 is used to mix fuel gas and air. When the opening of the throttle valve 20 abruptly decreases, gas in the intake pipe 21 can leak into the pressure-intake device through the anti-surge valve 30.

[0051] The compressed air intake device provided in this embodiment includes a compressed air intake pipe 100 and an exhaust pipe 200. The compressed air intake pipe 100 is connected between an air source and a turbocharger 10 and is configured to introduce air into the turbocharger 10. The exhaust pipe 200 is connected between the compressed air intake pipe 100 and the anti-surge valve 30, and the outlet of the exhaust pipe 200 is connected to the interior of the compressed air intake pipe 100. The exhaust pipe 200 is configured to introduce the exhaust gas from the anti-surge valve 30 into the compressed air intake pipe 100. When the opening of the throttle valve 20 abruptly decreases, the gas in the intake pipe 21 can leak into the compressed air intake pipe 100 through the anti-surge valve 30 and the exhaust pipe 200.

[0052] Specifically, the exhaust gas from the anti-surge valve 30 can be jetted into the pressure inlet pipe 100 in a jet manner. Along the axial direction of the exhaust pipe 200, the distance between the inner wall of the pressure inlet pipe 100 and the outlet of the exhaust pipe 200 is x, and the outlet diameter of the exhaust pipe 200 is D, where x > 6.2D.

[0053] A complete jet consists of an initial section and a main section. The initial section forms the jet core, where the airflow velocity is high, while the airflow velocity in the main section decreases significantly. Therefore, the jet noise generated when the initial section of the jet impacts the inner wall of the intake manifold 100 is relatively high, while the jet noise generated when the main section of the jet impacts the inner wall of the intake manifold 100 is relatively low. Calculations show that the length L0 of the initial jet section and the outlet diameter D of the exhaust pipe 200 are related by L0 = 6.2D. Since the airflow velocity remains constant within the initial jet section, but enters the development phase within the main jet section, the airflow velocity along the jet axis varies with the jet length; the longer the jet, the lower the airflow velocity. Therefore, for a design where x > 6.2D, the jet noise between the exhaust of the anti-surge valve 30 and the inner wall of the intake manifold 100 can be effectively reduced, thereby improving the driver's and passengers' vehicle usage experience.

[0054] According to the principle of conservation of momentum, the momentum flux at each cross-section of the jet is conserved and equal to the momentum flux at the outlet cross-section of the exhaust pipe 200. The relationship between the length L0 of the initial section of the jet and the outlet diameter D of the exhaust pipe 200 is obtained through the following calculation:

[0055]

[0056] Where J is the momentum flux of the outlet section of exhaust pipe 200, r is the radius of the jet cross section, u is the velocity of the jet cross section, ρ is the density of the jet medium, u0 is the velocity of the outlet section of exhaust pipe 200, and r0 is the radius of the outlet section of exhaust pipe 200.

[0057] Because the flow velocities at different cross sections of the main body of the jet are similar, that is

[0058]

[0059] Where b is the boundary thickness of the main body segment of the jet.

[0060] Take b e As a characteristic half-thickness, when r = b e hour, Substituting this into formula (1) and integrating, we get:

[0061]

[0062] Among them, u m denoted as , where is the axial velocity of the jet; e is a constant.

[0063] It should be noted that the characteristic half-thickness of a jet is an important parameter used in fluid mechanics to describe the structure of a jet. It refers to the distance at which the velocity in the central region of the jet is the fastest, gradually decreasing outwards until the velocity is halved; this distance is the half-thickness.

[0064] Assume the jet thickness expands linearly, i.e., b e = cx, where c is a fixed constant value. Substituting this into formula (3) yields:

[0065]

[0066] Based on experience, if c = 0.114, then the above formula becomes:

[0067]

[0068] Let u m =u0, so the relationship between the length L0 of the initial section of the jet and the outlet diameter D of the exhaust pipe 200 is L0 = 6.2D.

[0069] Since the jet velocity is in the range of subsonic to sonic speed, the acoustic power of the jet noise is:

[0070]

[0071] Where W is the acoustic power of the injection noise, S is the cross-sectional area of ​​the exhaust pipe 200 outlet, c is the velocity of sound in the medium, and M is the Mach number.

[0072] According to formula (6), the nozzle cross-sectional diameter D and the distance x between the inner wall of the inlet air intake 100 and the outlet of the exhaust pipe 200 are two key design variables. Once D has been standardized and determined, the key lies in the design of x. It is necessary to ensure that x > 6.2D, and the larger x is, the better, so as to avoid the problem of excessive sound power caused by excessive airflow velocity when the airflow hits the inner wall of the inlet air intake 100. The shape of the inlet air intake 100 is determined by the boundary. Based on this, the distance x between the inner wall of the inlet air intake 100 and the outlet of the exhaust pipe 200 should be reduced. Therefore, the outlet of the exhaust pipe 200 is designed to face the first connecting pipe section 110.

[0073] Specifically, the inlet air pipe 100 is U-shaped and includes a first connecting pipe section 110, a second connecting pipe section 120, and a third connecting pipe section 130 connecting the first connecting pipe section 110 and the second connecting pipe section 120. The ends of the first connecting pipe section 110 and the second connecting pipe section 120 face the same direction. An air source connection connector 111 is provided at the end of the first connecting pipe section 110, which is connected to an air source. A turbocharger connection connector 121 is provided at the end of the second connecting pipe section 120, which is connected to a turbocharger 10. The exhaust pipe 200 is connected to the third connecting pipe section 130.

[0074] Preferably, in this embodiment, the angle α between the axial direction of the exhaust pipe 200 and the axial direction of the second connecting pipe section 120 is 70°. With this angle design, the design requirement of x > 6.2D can be achieved.

[0075] More specifically, a sensor mounting position 113 is provided on the side wall of the first connecting pipe section 110. The pressurized air intake device also includes a sensor disposed at the sensor mounting position 113, which is configured to detect the temperature and / or pressure of the intake air of the first connecting pipe section 110. In this embodiment, the sensor may specifically be a temperature and pressure sensor as used in the prior art.

[0076] More specifically, the compressed air intake device also includes an oil-gas separator connecting pipe 300. This oil-gas separator connecting pipe 300 connects the vehicle's oil-gas separator and the interior of the second connecting pipe section 120. With this arrangement, gas in the oil-gas separator can circulate into the compressed air intake pipe 100. The exhaust pipe 200 is located at one end of the third connecting pipe section 130 near the second connecting pipe section 120, with the outlet of the exhaust pipe 200 facing the other end of the third connecting pipe section 130. This design prevents the exhaust pipe 200 from facing the second connecting pipe section 120 when...

[0077] Optionally, the inner wall of the inlet air pipe 100 is provided with a sound-absorbing layer. In this embodiment, the sound-absorbing layer can specifically be fire-resistant sound-insulating cotton or the like, as is available in the prior art.

[0078] Alternatively, the pressure inlet pipe 100 can be a rubber hose. This configuration reduces the noise generated when the airflow ejected from the exhaust pipe 200 impacts the pressure inlet pipe 100.

[0079] Example 2

[0080] This embodiment provides a pressure-forward air intake device.

[0081] Figure 4 A schematic diagram of the pressure-inlet air device provided in Embodiment 2 of this utility model is shown. (Refer to...) Figure 4 The difference between this embodiment and the first embodiment is that a guide plate 112 is also provided inside the first connecting pipe section 110.

[0082] Specifically, the guide plate 112 is positioned between the sensor mounting position 113 and the outlet of the exhaust pipe 200 in the jet direction of the exhaust pipe 200 outlet. Along the jet direction of the exhaust pipe 200 outlet, the distance y between the guide plate 112 and the outlet of the exhaust pipe 200 is greater than 6.2D. By providing the guide plate 112, the temperature and pressure sensor on the sensor mounting position 113 and the exhaust pipe 200 are blocked, preventing the airflow in the exhaust pipe 200 from directly impacting the sensor mounting position 113 and affecting the accuracy of the detection results from the sensor mounting position 113.

[0083] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pre-pressurized air intake device, characterized in that, include: A pressure inlet manifold (100) is connected between an air source and a supercharger (10) of the intake system and is configured to introduce air into the supercharger (10). An exhaust pipe (200) is connected between the pressure intake pipe (100) and the anti-surge valve (30) of the intake system. The outlet of the exhaust pipe (200) is connected to the interior of the pressure intake pipe (100). The exhaust pipe (200) is configured to introduce the exhaust of the anti-surge valve (30) into the pressure intake pipe (100). The exhaust of the anti-surge valve (30) can be jetted into the pressure intake pipe (100) in a jet manner. Along the axial direction of the exhaust pipe (200), the distance between the inner wall of the pressure inlet pipe (100) directly opposite the outlet of the exhaust pipe (200) and the outlet of the exhaust pipe (200) is x, and the outlet diameter of the exhaust pipe (200) is D, where x > 6.2D.

2. The compressed air intake device according to claim 1, characterized in that, The inlet air pipe (100) is U-shaped and includes a first connecting pipe section (110), a second connecting pipe section (120), and a third connecting pipe section (130) connected between the first connecting pipe section (110) and the second connecting pipe section (120). The ends of the first connecting pipe section (110) and the second connecting pipe section (120) face the same direction. An air source connection connector (111) is provided at the end of the first connecting pipe section (110) and is connected to the air source. A turbocharger connection connector (121) is provided at the end of the second connecting pipe section (120) and is connected to the turbocharger (10). The exhaust pipe (200) is connected to the third connecting pipe section (130).

3. The compressed air intake device according to claim 2, characterized in that, The side wall of the first connecting pipe section (110) is provided with a sensor mounting position (113). The pressure-inlet air device also includes a sensor, which is disposed in the sensor mounting position (113) and is configured to detect the temperature and / or pressure of the inlet air of the first connecting pipe section (110).

4. The compressed air intake device according to claim 3, characterized in that, The outlet of the exhaust pipe (200) is oriented toward the direction of the first connecting pipe section (110); a guide plate (112) is provided inside the first connecting pipe section (110), and the guide plate (112) is positioned between the sensor mounting position (113) and the outlet of the exhaust pipe (200) in the jet direction of the outlet of the exhaust pipe (200). Along the jet direction of the outlet of the exhaust pipe (200), the distance y between the guide plate (112) and the outlet of the exhaust pipe (200) is greater than 6.2D.

5. The compressed air intake device according to claim 2, characterized in that, The compressed air intake device also includes an oil-gas separator connecting pipe (300), which is connected to the oil-gas separator of the vehicle and the interior of the second connecting pipe section (120). The exhaust pipe (200) is located at one end of the third connecting pipe section (130) near the second connecting pipe section (120), and the outlet of the exhaust pipe (200) faces the other end of the third connecting pipe section (130).

6. The compressed air intake device according to claim 2, characterized in that, The angle α between the axial direction of the exhaust pipe (200) and the axial direction of the second connecting pipe section (120) is 70°.

7. The compressed air intake device according to any one of claims 1-6, characterized in that, The inner wall of the inlet air pipe (100) is provided with a sound-absorbing layer.

8. The compressed air intake device according to any one of claims 1-6, characterized in that, The inlet air pipe (100) is a rubber tube.

9. An intake system, characterized in that, It includes a turbocharger (10), a throttle valve (20), an anti-surge valve (30), and a pressure-inlet device as described in any one of claims 1-8, wherein the pressure-inlet device, the turbocharger (10), and the throttle valve (20) are connected in sequence, and the anti-surge valve (30) is connected between the intake pipe (21) of the throttle valve (20) and the exhaust pipe (200).

10. A vehicle, characterized in that, It includes an engine and an intake system as described in claim 9, the intake system being connected to the cylinder block of the engine.

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