Rotational flow air inlet guide pipe of automobile engine

Abstract

The utility model discloses a rotational flow air inlet guide pipe of an automobile engine. The rotational flow air inlet guide pipe comprises a guide pipe body composed of an air inlet straight pipe and an air inlet bent pipe. A rotational flow pipe is clamped in a port of the air inlet end of the air inlet straight pipe, a port of the air outlet end of the air inlet straight pipe is turned inwards and extends towards the air inlet end to form an inner sleeve, an annular dust discharge cavity is formed between the inner sleeve and the air inlet straight pipe, and a dust discharge port with a dust discharge valve is formed in the air inlet straight pipe corresponding to the annular dust discharge cavity; one end of the air inlet bent pipe is connected to the air outlet end of the air inlet straight pipe, the other end of the air inlet bent pipe is connected to an engine air inlet air filter, noise reduction holes are evenly distributed in the pipe wall of the air inlet bent pipe, a noise reduction shell is annularly fixed to the portion, located on the outer sides of the noise reduction holes, of the air inlet bent pipe, and sound absorption pads closely attached to the noise reduction holes are arranged on the inner wall of the noise reduction shell. The utility model has the advantages that impurities are prevented from entering the inner sleeve by utilizing the cyclone type filtering principle, the purpose of efficiently filtering the intake impurities is achieved, the blockage of the impurities to the engine intake air filter is delayed, the replacement frequency of the engine intake air filter is reduced, and the service life of the engine intake air filter is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of automotive engine intake technology, and in particular to an automotive engine swirl intake duct. Background Technology

[0002] With global climate change and environmental degradation, extreme weather phenomena such as sandstorms are occurring more frequently. Sandstorms contain a large number of fine particulate matter. Due to the low filtration efficiency of the intake ducts in current car engines, it is difficult to effectively filter out these sand particles. As a result, sand particles enter the engine through the intake ducts. This increases the frequency of filter replacement for users, causing inconvenience. Furthermore, if the filter is not replaced in time, it can lead to engine wear, blockage, and mechanical failure. In severe cases, it can cause engine seizure or even prevent the vehicle from starting, requiring engine replacement.

[0003] In addition, the intake ducts of existing car engines are relatively poor in terms of noise control. When a turbocharged engine is used to reduce energy consumption, the high-speed operation of the turbine will generate a large amount of high-frequency noise that enters the car, resulting in a lot of noise inside the car. This greatly affects the driving and riding comfort of the passengers and will also have a significant negative impact on the overall marketability of the vehicle. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a swirl intake duct for automobile engines.

[0005] To achieve the above objectives, the present invention can adopt the following technical solution:

[0006] The present invention relates to a swirl intake duct for an automotive engine, comprising a duct body consisting of a straight intake pipe and an intake bend. The straight intake pipe has a swirl tube inserted into its intake port, and its outlet port is inverted and extends towards the intake port to form an inner sleeve. An annular dust removal chamber is formed between the wall of the inner sleeve and the inner wall of the straight intake pipe. A dust removal port with a dust removal valve is provided on the straight intake pipe corresponding to the annular dust removal chamber. One end of the intake bend is connected to the outlet of the straight intake pipe, and the other end is connected to the engine intake air filter. Noise reduction holes are evenly distributed on the wall of the intake bend. A noise reduction outer shell for sealing the noise reduction holes is encircled on the intake bend outside the noise reduction holes. A sound-absorbing pad that is in close contact with the noise reduction holes is provided on the inner wall of the noise reduction outer shell.

[0007] Furthermore, the swirl tube includes an outer sleeve adapted to be fitted into the intake straight pipe, and a central shaft coaxially arranged with the outer sleeve. Multiple spiral guide vanes extending outward in a divergent manner are evenly distributed along the central shaft.

[0008] Furthermore, a rubber sealing ring is provided at the connection between the intake bend and the engine intake air filter, which is fixed to the interface to ensure the sealing of the connection between the intake bend and the engine intake air filter.

[0009] Furthermore, both the intake straight pipe and the intake bend are equipped with connecting brackets, and fixing bolts for fixing to the vehicle body are passed through the connecting brackets. Rubber shock-absorbing pads are fitted on the fixing bolts to ensure a stable connection between the intake straight pipe and the intake bend and the vehicle body. At the same time, it can also effectively reduce the transmission of vibrations generated by the intake straight pipe and the intake bend during the air intake process to the vehicle body.

[0010] The advantages of this invention lie in its use of a swirling tube at the intake end of the intake straight pipe and an inner sleeve at its outlet end. This utilizes the principle of cyclone filtration to induce a swirling flow of gas into the intake straight pipe. The high-speed rotation of the airflow causes impurities in the gas to adhere to the inner wall of the intake straight pipe in a centrifugal state and move towards the outlet end, preventing impurities from entering the inner sleeve. This achieves highly efficient filtration of intake impurities, significantly reducing the amount of impurities deposited on the engine air filter via the intake bend, delaying impurity blockage, reducing the frequency of air filter replacement, and extending its service life. Furthermore, the noise-reducing holes on the intake bend wall and the noise-reducing shell with sound-absorbing pads covering the outside of the intake bend effectively reduce high-frequency noise generated during intake, preventing high-frequency noise from being transmitted into the vehicle interior, improving the comfort of passengers, and overcoming the negative impact of noise on the overall product quality of the vehicle. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 yes Figure 1 Top view.

[0013] Figure 3 yes Figure 1 The left view.

[0014] Figure 4 yes Figure 1 Sectional view along the AA direction. Detailed Implementation

[0015] 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.

[0016] like Figure 1-4 As shown, the automobile engine swirl intake duct of this utility model includes a duct body composed of an intake straight pipe 1 and an intake bend 2; wherein, the intake straight pipe 1 is used for the intake of external air, while the intake bend 2 is connected at one end to the air outlet of the intake straight pipe 1 and at the other end to the engine intake air filter (i.e., air filter), and the intake straight pipe 1, the intake bend 2 and the engine intake air filter constitute the intake structure installed on the engine.

[0017] Specifically, a swirl tube 3 is installed inside the air intake end port of the intake straight pipe 1. The swirl tube 3 includes an outer sleeve 3.1 adapted to be installed inside the intake straight pipe 1, and a central shaft 3.2 connected to the outer sleeve 3.1. The central shaft 3.2 is coaxially arranged with the outer sleeve 3.1. Eight spiral guide vanes 3.3 extending outward in a divergent manner are evenly distributed along the central shaft 3.2. An inner sleeve 4 is formed by turning inward at the air outlet end port of the intake straight pipe 1 and extending towards the air intake end. An annular dust discharge chamber 5 is formed between the inner sleeve 4 and the inner wall of the intake straight pipe 1. A dust discharge port 7 with a dust discharge valve 6 is opened on the intake straight pipe 1 corresponding to the annular dust discharge chamber 5. At this time, the gas enters the intake straight pipe 1 in a swirling state through the cyclone filtration principle of the cyclone tube 3. The high-speed rotation of the airflow causes impurities in the gas to adhere to the inner wall of the intake straight pipe 1 under centrifugal state and slide backward, and then be collected in the annular dust discharge chamber 5. This reduces the amount of impurities entering the inner sleeve 4 and achieves the purpose of efficiently filtering intake impurities.

[0018] In addition, noise reduction holes 8 are evenly distributed on the wall of the intake bend 2. A noise reduction shell 9 for sealing the noise reduction holes 8 is located on the intake bend 2 outside the noise reduction holes 8. A sound-absorbing pad 10 that is in close contact with the noise reduction holes 8 is provided on the inner wall of the noise reduction shell 9. The noise reduction holes 8, the noise reduction shell 9 and the sound-absorbing pad 10 form a resistive sound-absorbing structure, which can effectively absorb the noise emitted from the noise reduction holes 8 and reduce the high-frequency noise generated by the intake straight pipe 1 and the intake bend 2 when the airflow enters.

[0019] Furthermore, to ensure the sealing of the connection between the intake bend 2 and the engine intake air filter, a rubber sealing ring 11 can be installed at the connection between the intake bend 2 and the engine intake air filter, which is fixed to the interface. To ensure a stable connection between the intake straight pipe 1 and the intake bend 2 and the vehicle body, a connecting bracket 12 is provided on both the intake straight pipe 1 and the intake bend 2. A fixing bolt 13 for fixing to the vehicle body passes through the connecting bracket 12. A rubber damping pad 14 is fitted on the fixing bolt 13. The fixing bolt 13 passes through the connecting bracket 12 and the rubber damping pad 14 in sequence and is fixed to the vehicle body, so that the rubber damping pad 14 is placed between the connecting bracket 12 and the vehicle body. This ensures that the fixing bolt 13 can stably fix the intake straight pipe 1 and the intake bend 2 to the vehicle body. At the same time, the rubber damping pad 14 can also effectively reduce the vibration generated by the intake straight pipe 1 and the intake bend 2 during the intake process and transmit it to the vehicle body.

[0020] The entire swirl intake duct of the car engine can greatly reduce the deposition of impurities on the engine intake air filter through the intake straight pipe 1 and intake bend 2, delay the blockage of the engine intake air filter by impurities, reduce the replacement frequency of the engine intake air filter, and extend its service life; at the same time, it can also prevent high-frequency noise from being transmitted into the car, improve the comfort of the passengers, and overcome the negative impact of noise on the overall product quality of the vehicle.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] Furthermore, in this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A swirl intake duct for an automobile engine, characterized in that: The device includes a duct body consisting of an intake straight pipe and an intake bend pipe. The intake straight pipe has a swirl tube installed at its intake end, and its outlet end extends inwards towards the intake end to form an inner sleeve. An annular dust removal chamber is formed between the wall of the inner sleeve and the inner wall of the intake straight pipe. A dust removal port with a dust removal valve is provided on the intake straight pipe corresponding to the annular dust removal chamber. One end of the intake bend pipe is connected to the outlet end of the intake straight pipe, and the other end is connected to the engine intake air filter. Noise reduction holes are evenly distributed on the wall of the intake bend pipe. A noise reduction outer shell for sealing the noise reduction holes is encircled on the intake bend pipe outside the noise reduction holes. A sound-absorbing pad that is in close contact with the noise reduction holes is provided on the inner wall of the noise reduction outer shell.

2. The automobile engine swirl intake duct according to claim 1, characterized in that: The swirl tube includes an outer sleeve that is fitted into the intake straight pipe, and a central shaft that is coaxially arranged with the outer sleeve. Multiple spiral guide vanes that extend outward in a divergent manner are evenly distributed along the central shaft.

3. The swirl intake duct for an automobile engine according to claim 1, characterized in that: A rubber sealing ring is provided at the connection between the intake bend and the engine intake air filter.

4. The swirl intake duct for an automobile engine according to claim 1, characterized in that: Both the intake straight pipe and the intake bend are equipped with connecting brackets, and fixing bolts for fixing to the vehicle body are passed through the connecting brackets. Rubber shock-absorbing pads are fitted on the fixing bolts.

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