CN217682032U

CN217682032U - Air intake system of engine, engine and vehicle

Info

Publication number: CN217682032U
Application number: CN202221817041.6U
Authority: CN
Inventors: 胡德勇; 罗宏锦; 钟翔波
Original assignee: SAIC GM Wuling Automobile Co Ltd
Current assignee: SAIC GM Wuling Automobile Co Ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-10-28
Anticipated expiration: 2032-07-15

Abstract

The utility model discloses an air inlet system of an engine, the engine and a vehicle, wherein the air inlet system of the engine comprises an air filter assembly and a silencer, the air filter assembly comprises an air filter, an air filter inlet pipe and an air filter exhaust pipe which are arranged on the air filter, and the air outlet of the air filter exhaust pipe is connected with the engine through a supercharger; the silencer cover is located empty filter and is filtered out the trachea and be close to the gas outlet setting, and the silencer encloses into the resonant cavity that a plurality of wall set up with empty filter trachea, and empty filter is filtered out the trachea and is provided with the amortization punch combination corresponding to each resonant cavity, and each amortization punch combination includes a plurality of bloops that communicate with the resonant cavity that corresponds. The utility model discloses a filter out the trachea dustcoat at the sky and establish the muffler, improved the NVH quality of whole car, improved user's experience by bus, and realized the muffler and strained integrating outside the gas outlet pipe at the sky, promoted the noise cancelling effect of muffler.

Description

Air intake system of engine, engine and vehicle

Technical Field

The utility model relates to a vehicle manufacturing technical field, in particular to air intake system, engine and vehicle of engine.

Background

The air intake system of the engine is used as an air management system of the vehicle engine, and mainly used for conveying clean and sufficient cold air to the engine so as to ensure the performance of the engine to be fully exerted and improve the economy and the dynamic property of the engine. At present, an engine is communicated with an air intake system of the engine through a supercharger, but the engine and the supercharger can generate severe Noise when working, and the Noise seriously reduces the NVH (Noise, vibration and Harshness) quality of the whole vehicle, and influences the riding experience of a user.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an air intake system, engine and vehicle of engine aims at solving the violent noise that current engine and booster during operation produced, seriously reduces the NVH quality of whole car, influences the problem of user's experience by bus.

In order to achieve the above object, the present invention provides an air intake system of an engine, the air intake system of the engine includes:

the air filter assembly comprises an air filter, an air filter air inlet pipe and an air filter air pipe, wherein the air filter air inlet pipe and the air filter air pipe are arranged on the air filter;

the silencer cover is arranged outside the air filtering air pipe and close to the air outlet, the silencer and the air filtering air pipe are surrounded to form a plurality of resonant cavities which are arranged in a separated mode, silencing hole groups are arranged on the air filtering air pipe corresponding to the resonant cavities, and each silencing hole group comprises a plurality of silencing holes communicated with the corresponding resonant cavities.

Preferably, the silencer comprises a shell and a plurality of partition plates, the shell is covered outside the air filtering air outlet pipe, the partition plates are connected between the shell and the air filtering air outlet pipe and are sequentially distributed along the extending direction of the air filtering air outlet pipe, and the resonant cavity is defined by any two adjacent partition plates, the shell and the air filtering air outlet pipe.

Preferably, the number and size of the silencing holes in the plurality of silencing hole groups are different.

Preferably, in each of the silencing hole groups, a plurality of silencing holes are distributed at intervals in a circumferential direction of the air filtering air pipe to form a plurality of rows.

Preferably, the volumes of the plurality of resonant cavities are different.

Preferably, the volumes of the resonant cavities are gradually enlarged along the direction close to the air outlet.

Preferably, the inner pipe wall of the air filter inlet pipe is smoothly arranged.

Preferably, the air intake system of the engine further includes a communicating pipe, the communicating pipe is mounted on the muffler and is communicated with one of the resonant cavities, the air filtering air pipe is opened corresponding to the communicating pipe, and the communicating pipe is further communicated with an intercooling bypass pipe and a PCV pipe.

The utility model discloses still provide an engine, the engine includes the air intake system of foretell engine.

The utility model discloses still provide a vehicle, the vehicle includes foretell engine.

In the process of engine work, the noise that engine and booster produced propagates to the resonant cavity through the bloop, thereby makes the air of resonant cavity and noise produce the sound wave energy of resonance noise consumption and then reach the noise cancelling effect, and then has reduced the noise that engine and booster produced, has improved the NVH quality of whole car, has improved user's experience by bus. The muffler cover is located empty outside of the chimney that strains and is filtered the trachea with the sky and encloses into a plurality of resonant cavities, can realize the muffler outside empty integration of straining the chimney, compact structure just avoids muffler dispersion to distribute, and then the limited engine compartment space of rational utilization makes the resonant cavity of muffler bigger, the noise cancelling effect of muffler has been promoted, and the muffler is close to the gas outlet setting, it is that booster and engine are more close to make the muffler leave the noise source, it directly carries out the amortization to the noise to do benefit to the muffler, thereby further the noise cancelling effect of muffler has been promoted, the NVH quality of whole car has been improved, user's experience by bus has been improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of an intake system of an engine according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a part of an intake system of an engine according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a portion of an intake system of an engine according to an embodiment of the present invention.

The reference numbers indicate:

100	air intake system of engine	21	Outer casing
				10	Air filter assembly	22	Partition plate
11	Air filter	23	Resonant cavity
				12	Air filter air inlet pipe	24	Silencing hole group
13	Air filtering pipe	241	Silencing hole
				131	Air outlet	30	Communicating pipe
132	Opening of the container	40	PCV pipe
				20	Noise silencer	50	Intercooling bypass pipe

The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the present embodiment are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions in the present application as to "first," "second," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "secured" are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides an air intake system 100 of engine.

In one embodiment, as shown in fig. 1 to 3, an air intake system 100 of an engine includes an air cleaner assembly 10 and a silencer 20, wherein the air cleaner assembly 10 includes an air cleaner 11, and an air filter intake pipe 12 and an air filter exhaust pipe 13 mounted on the air cleaner 11, and an air outlet 131 of the air filter exhaust pipe 13 is communicated with the engine through a supercharger; the silencer 20 covers the air filtering air pipe 13 and is arranged close to the air outlet 131, the silencer 20 and the air filtering air pipe 13 enclose a plurality of resonant cavities 23 which are arranged in a separated mode, the air filtering air pipe 13 is provided with silencing hole groups 24 corresponding to the resonant cavities 23, and each silencing hole group 24 comprises a plurality of silencing holes 241 communicated with the corresponding resonant cavities 23.

When the air inlet system 100 of the engine works, outside air enters the air filter 11 through the air filtering inlet pipe 12, impurities such as dust in the air are removed under the filtering action of the air filter 11, and the filtered air enters the supercharger through the air filtering inlet pipe 13 and then is input into the engine, so that the engine obtains clean and sufficient air, the performance of the engine is fully exerted, and the normal work of the engine is ensured. In addition, in the working process of the engine, noise generated by the engine and the supercharger is transmitted into the resonant cavity 23 through the muffling hole 241, so that the air of the resonant cavity 23 and the noise generate resonance, the sound wave energy of the noise is consumed, the muffling effect is further achieved, the noise generated by the engine and the supercharger is reduced, the NVH quality of the whole vehicle is improved, and the riding experience of a user is improved.

It should be noted that, the air intake system 100 of the engine is located in the engine compartment with limited space, the muffler 20 covers the air filtering air pipe 13 and encloses into a plurality of resonant cavities 23 with the air filtering air pipe 13, the integration of the muffler 20 outside the air filtering air pipe 13 can be realized, the structure is compact and the disperse distribution of the muffler 20 is avoided, further, the resonant cavity 23 of the muffler 20 is larger by reasonably utilizing the limited engine compartment space, the silencing effect of the muffler 20 is improved, and the muffler 20 is arranged close to the air outlet 131, so that the muffler 20 is closer to a noise source, i.e., a supercharger and the engine, the muffler 20 is favorable for directly silencing noise, thereby further improving the silencing effect of the muffler 20, the NVH quality of the whole vehicle is improved, and the riding experience of a user is improved.

In an embodiment, the silencer 20 includes a casing 21 and a plurality of partition plates 22, the casing 21 covers the air filtering pipe 13, the plurality of partition plates 22 are connected between the casing 21 and the air filtering pipe 13 and are sequentially distributed along the extending direction of the air filtering pipe 13, and any two adjacent partition plates 22, the casing 21 and the air filtering pipe 13 enclose a resonant cavity 23.

As shown in fig. 3, the plurality of partition plates 22 are sequentially distributed along the extending direction of the air filtering pipe 13, so that the plurality of resonant cavities 23 are sequentially distributed along the extending direction of the air filtering pipe 13, the structure of the silencer 20 is more compact, and the plurality of resonant cavities 23 can be separated between the housing 21 and the air filtering pipe 13 by arranging the partition plates 22, and the structural design is simple and reasonable.

In an embodiment, the number and size of the muffling holes 241 in the plurality of muffling hole groups 24 are different, so that the muffling frequencies of the plurality of resonant cavities 23 are different, and when the supercharger and the engine work to generate noises with different frequencies, the plurality of resonant cavities 23 with different muffling frequencies perform muffling on the noises with different frequencies, so that the muffling effect of the muffler 20 can be better.

As shown in fig. 3, in each silencing hole group 24, the plurality of silencing holes 241 are distributed at intervals in the circumferential direction of the air filtering pipe 13 to form a plurality of rows, so that the silencing holes 241 can be distributed over the entire circumference of the air filtering pipe 13, the silencing range of the silencer 20 can be more comprehensive, and the distribution of the plurality of silencing holes 241 can be more regular, thereby facilitating the processing of the silencing holes 241.

In one embodiment, the plurality of resonant cavities 23 differ in volume. The different amortization loudness that makes a plurality of resonant cavities 23 of the volume of a plurality of resonant cavities 23 is different, when the booster produced the noise of different loudness with engine work, the resonant cavity 23 that a plurality of amortization loudness are different can be respectively to the noise of different loudness carry out the amortization to make muffler 20's noise cancelling effect better, but also can realize the noise amortization of wide loudness scope, promoted muffler 20's noise cancelling effect.

In a preferred embodiment, the resonant cavities 23 are arranged in a diverging manner in a direction close to the air outlet 131. It can be understood that, the closer to the noise source, i.e. the position of the supercharger and the engine, the greater the loudness of the noise, and correspondingly, the closer to the noise source, the resonant cavity 23 is, the greater the loudness of the noise of the resonant cavity 23 is, by making the volumes of the resonant cavities 23 gradually expand along the direction close to the air outlet 131, so that the loudness of the noise of the resonant cavity 23 corresponds to the loudness of the noise, and the noise reduction effect of the muffler 20 is further improved.

In one embodiment, the inner wall of the air inlet filter tube 12 is smooth. As shown in fig. 1, the inner wall of the air filtering intake pipe 12 is smoothly arranged, which can optimize the air flow passage of the air filtering intake pipe 12, avoid the formation of a step-like structure on the inner wall, which is easy to cause vortex, and further avoid the generation of vortex noise of the intake pipe, and reduce the resistance of the external air flowing in the intake pipe, so as to ensure the smoothness of the air entering the air filter 11, improve the air intake performance of the air intake system 100 of the engine, and reduce the noise of the air intake system 100 of the engine.

In an embodiment, the air intake system 100 of the engine further includes a communicating pipe 30, the communicating pipe 30 is mounted on the muffler 20 and is communicated with one of the resonant cavities 23, the empty filter gas pipe 13 is opened with an opening 132 corresponding to the communicating pipe 30, and the communicating pipe 30 is further communicated with the intercooling bypass pipe 50 and the PCV pipe 40.

The intercooling bypass pipe 50 and the PCV pipe 40 are respectively part of an intercooling system and a PCV system of the engine, and the intercooling system is used for regulating the temperature of air entering the engine to ensure the performance of the engine; the PCV system has the function of preventing blow-by gas generated by the operation of the engine from being directly exhausted into the atmosphere, and reducing air pollution. The utility model discloses an install communicating pipe 30 on muffler 20 and set up opening 132 in the position that empty trachea 13 that filters out corresponds communicating pipe 30, make empty trachea 13 that filters out communicate with well cold bypass pipe 50 and PCV pipe 40. The communication between the air filtering air pipe 13 and the PCV pipe 40 is beneficial to introducing blow-by gas generated by the work of the engine into the air filtering air pipe 13 through the PCV pipe 40 by a PCV system, and further enabling the blow-by gas to enter the engine again through the supercharger through the air filtering air pipe 13, so that the blow-by gas is utilized by the engine, the air pollution is reduced, and the fuel economy is improved. Understandably, the engine may adjust the open and close of the throttle valve of the engine during operation to adjust the flow of air entering the engine, the intercooling system is located between the supercharger and the engine, when the throttle valve of the engine is closed, a backflow air flow is generated, and the backflow air flow flows back to the intercooling system to increase the pressure inside the intercooling system, the utility model discloses a communicating pipe 30 communicates the air filtering pipe 13 with the intercooling bypass pipe 50, so that the intercooling system can discharge the backflow air flow into the intercooling filtering pipe 13 again, the pressure inside the intercooling system is reduced, and the backflow air flow can be prevented from flowing back to the supercharger, the air inlet blade of the supercharger can be protected while the parts inside the intercooling system are prevented from being damaged, and the service life of the intercooling system and the supercharger is prolonged.

In an embodiment, three resonant cavities 23 of the silencer 20 are provided, the three resonant cavities 23 are sequentially distributed along the extending direction of the air filtering pipe 13, the volumes of the three resonant cavities 23 are sequentially 0.1 liter, 0.13 liter and 0.19 liter along the direction close to the air outlet 131, and the silencing frequencies of the three resonant cavities 23 are sequentially 3200HZ, 2550HZ and 1000HZ along the direction close to the air outlet 131.

The utility model discloses still provide an engine, this engine includes air intake system 100 of foretell engine. The specific structure of the air intake system 100 of the engine refers to the above-mentioned embodiments, and since the air intake system 100 of the engine adopts all the technical solutions of all the above-mentioned embodiments, at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments are achieved, and no further description is given here.

The utility model discloses still provide a vehicle, this vehicle includes foretell engine. The specific structure of the air intake system 100 of the engine of the vehicle refers to the above embodiments, and since the engine adopts all technical solutions of all the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and details are not repeated here.

The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.

Claims

1. An intake system of an engine, comprising:

the silencer cover is arranged outside the air filtering pipe and close to the air outlet, the silencer and the air filtering pipe are encircled to form a plurality of resonant cavities which are arranged in a separated mode, the air filtering pipe is provided with silencing hole groups corresponding to the resonant cavities, and each silencing hole group comprises a plurality of silencing holes communicated with the corresponding resonant cavities.

2. The air intake system of the engine according to claim 1, wherein the muffler includes a housing and a plurality of partition plates, the housing covers the air filtering outlet pipe, the plurality of partition plates are connected between the housing and the air filtering outlet pipe and are sequentially distributed along an extending direction of the air filtering outlet pipe, and any two adjacent partition plates, the housing and the air filtering outlet pipe define the resonant cavity.

3. The intake system of an engine according to claim 1, wherein the plurality of silencing holes are different in number and size.

4. The intake system of an engine according to claim 1, wherein a plurality of the muffler holes are formed in each of the muffler hole groups in a plurality of rows at intervals in a circumferential direction of the air filter intake pipe.

5. An air intake system for an engine as set forth in claim 1, wherein the volumes of the plurality of resonance chambers are different.

6. The air intake system of the engine according to claim 5, wherein the volumes of the plurality of resonance chambers are arranged to be gradually enlarged in a direction close to the air outlet port.

7. The intake system of the engine according to any one of claims 1 to 6, wherein an inner wall of the air filter intake pipe is smoothly arranged.

8. The air intake system of the engine according to any one of claims 1 to 6, further comprising a communicating pipe, the communicating pipe being mounted on the muffler and communicating with one of the resonant cavities, the air filter gas pipe opening corresponding to the communicating pipe, and an intercooling bypass pipe and a PCV pipe further communicating with the communicating pipe.

9. An engine characterized by comprising an intake system of the engine as recited in any one of claims 1 to 8.

10. A vehicle characterized by comprising the engine of claim 9.