CN208996847U - Intake muffler system and engine - Google Patents

Intake muffler system and engine Download PDF

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Publication number
CN208996847U
CN208996847U CN201821524919.0U CN201821524919U CN208996847U CN 208996847 U CN208996847 U CN 208996847U CN 201821524919 U CN201821524919 U CN 201821524919U CN 208996847 U CN208996847 U CN 208996847U
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air
cavity
core tube
pipe
muffler
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杨鑫
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Thalys Automobile Co ltd
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Chongqing Jinkang New Energy Automobile Design Institute Co Ltd
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Abstract

This application involves automobile component field more particularly to a kind of air inflow noise elimination system and engines.The air inflow noise elimination system includes air cleaner, turbocharger and intercooler, further includes: the first high frequency silencer, inlet end are communicated with the gas outlet of air cleaner, and outlet side is communicated with the air inlet of turbocharger；The inlet end of second high frequency silencer, the second high frequency silencer is communicated with the gas outlet of turbocharger, and the outlet side of the second high frequency silencer is communicated with the high-pressure side tracheae of intercooler.Air inflow noise elimination system provided herein, in the case where cabin space anxiety, the first high frequency silencer and the second high frequency silencer are respectively provided in the air inlet and air outlet side close to turbocharger, first high frequency silencer is between air cleaner and turbocharging gas, second high frequency silencer is between turbocharging gas and intercooler, achieve the purpose that inhibit induction noise, has improved the quality sense of automobile.

Description

Air inflow noise elimination system and engine
Technical field
This application involves automobile component field more particularly to a kind of air inflow noise elimination systems, further relate to a kind of engine.
Background technique
In recent years market is higher and higher to the attention rate of automobile noise, and engine charge noise is mainly making an uproar for orthodox car One of sound source.
For engine with supercharger, induction noise is mainly the high-frequency noise that booster generates, hair in the prior art Motivation gas handling system without designing effective noise elimination structure, causes noise in vehicle traveling process big, quality sense is poor.
Summary of the invention
This application provides a kind of air inflow noise elimination system and engines to reduce noise to solve the problems of the prior art, Improve automotive quality.
The first aspect of the application provides a kind of air inflow noise elimination system comprising air cleaner, turbocharger and Intercooler, further includes:
First high frequency silencer, the gas outlet phase of the inlet end and the air cleaner of the first high frequency silencer Logical, the outlet side of the first high frequency silencer is communicated with the air inlet of the turbocharger；
Second high frequency silencer, the inlet end and the gas outlet phase of the turbocharger of the second high frequency silencer Logical, the outlet side of the second high frequency silencer is communicated with the high-pressure side tracheae of the intercooler.
Preferably, the first high frequency silencer includes:
First shell；
The inside of the first shell is arranged in first core pipe；
The inlet end between first core pipe and the first shell is arranged in first end cover；
It is provided with first partition on the outer wall of first core pipe, the first partition is by first core pipe, described The region surrounded between one shell and the first end cover is separated at least one first inner chamber body；
The first sound attenuation hole is provided in first core pipe；
The inlet end of first core pipe is communicated with the gas outlet of the air cleaner, and the inside of first core pipe is logical First sound attenuation hole is crossed to communicate with the first inner chamber body, the outlet side of first core pipe and the turbocharger into Port communicates.
Preferably, the first inner chamber body be four, along first core pipe inlet end to outlet side be respectively cavity One, cavity two, cavity three and cavity four；
The cavity one is identical as the volume of the cavity two；
The cavity one is respectively less than the volume of the cavity three with the volume of the cavity two；
The volume of the cavity three is less than the volume of the cavity four.
Preferably, the outer wall of the first shell is formed with hierarchic structure.
Preferably, the inlet end of first core pipe passes through the gas outlet phase of the first connecting tube and the air cleaner Logical, the outlet side of first core pipe is communicated by the second connecting tube with the air inlet of the turbocharger.
Preferably, the first connector, one end of first connector and first core pipe are provided in the first shell Inside communicate；
The air inflow noise elimination system further includes the first relief tube, first end and the intercooler of first relief tube Low-pressure side tracheae communicates, and the second end of first relief tube is communicated with the other end of first connector.
Preferably, the second high frequency silencer includes:
Second shell；
The inside of the second shell is arranged in second core pipe；
The outlet side between second core pipe and the second shell is arranged in second end cover；
It is provided with second partition on the outer wall of second core pipe, the second partition is by second core pipe, described The region surrounded between two shells and the second end cover is separated at least one second inner chamber body；
The second sound attenuation hole is provided in second core pipe；
The inlet end of second core pipe is communicated with the gas outlet of the turbocharger, and the inside of second core pipe is logical It crosses second sound attenuation hole to communicate with the second inner chamber body, the outlet side of second core pipe and the high-pressure side of the intercooler Tracheae communicates.
Preferably, the second inner chamber body be six, along second core pipe direction from inlet end to outlet side successively Arrangement, and volume is sequentially reduced.
Preferably, the outer wall of the second shell is formed with hierarchic structure.
Preferably, the inlet end of second core pipe passes through the gas outlet phase of third connecting tube and the turbocharger Logical, the outlet side of second core pipe is communicated by the 4th connecting tube with the high-pressure side tracheae of the intercooler.
Preferably, the second connector, one end of second connector and second core pipe are provided in the second shell Inside communicate；
The air inflow noise elimination system further includes the second relief tube, first end and the intercooler of second relief tube Low-pressure side tracheae communicates, and the second end of second relief tube is communicated with the other end of second connector.
The second aspect of the application also provides a kind of engine comprising air inflow noise elimination system described in any of the above embodiments.
Technical solution provided by the present application can achieve it is following the utility model has the advantages that
Air inflow noise elimination system and engine provided herein, in the case where cabin space anxiety, close to turbine The air inlet and air outlet side of booster is respectively provided with the first high frequency silencer and the second high frequency silencer, and the first high frequency is eliminated the noise Between air cleaner and turbocharging gas, the second high frequency silencer reaches device between turbocharging gas and intercooler The purpose for inhibiting induction noise has been arrived, the quality sense of automobile is improved.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited Application.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of engine provided by the embodiment of the present application.
Fig. 2 is showing for the partly cut-away of the first high frequency silencer in air inflow noise elimination system provided by the embodiment of the present application It is intended to.
Fig. 3 is the office of the first high frequency silencer of another angle in air inflow noise elimination system provided by the embodiment of the present application The schematic diagram that portion splits.
Fig. 4 is showing for the partly cut-away of the second high frequency silencer in air inflow noise elimination system provided by the embodiment of the present application It is intended to.
Appended drawing reference:
1- the first high frequency silencer；
The first connecting tube of 11-；
12- first shell；
The first core pipe of 13-；
The first sound attenuation hole of 131-；
14- first end cover；
15- first inner chamber body；
151- cavity one；
152- cavity two；
153- cavity three；
154- cavity four；
The second connecting tube of 16-；
The first connector of 17-；
18- first partition；
2- air cleaner；
3- turbocharger；
4- the second high frequency silencer；
41- third connecting tube；
42- second shell；
The second core pipe of 43-；
The second sound attenuation hole of 431-；
44- second end cover；
45- second inner chamber body；
451- cavity five；
452- cavity six；
453- cavity seven；
454- cavity eight；
455- cavity nine；
456- cavity ten；
The 4th connecting tube of 46-；
The second connector of 47-；
48- second partition；
5- intercooler；
The high-pressure side 6- tracheae；
7- low-pressure side tracheae；
The first relief tube of 8-；
The second relief tube of 9-；
10- relief valve.
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application Example, and together with specification it is used to explain the principle of the application.
Specific embodiment
The application is described in further detail below by specific embodiment and in conjunction with attached drawing.The embodiment of the present application A kind of air inflow noise elimination system is provided, engine provided by the embodiments of the present application is suitable for.Fig. 1 is provided by the embodiment of the present application Engine structural schematic diagram, refering to what is shown in Fig. 1, engine provided by the embodiments of the present application includes the application any embodiment The air inflow noise elimination system of offer, air inflow noise elimination system include air cleaner 2, turbocharger 3 and intercooler 5, further include One high frequency silencer 1 and the second high frequency silencer 4.
Wherein, the inlet end of the first high frequency silencer 1 is communicated with the gas outlet of air cleaner 2, the first high frequency silencer 1 Outlet side communicated with the air inlet of turbocharger 3, the outlet of the inlet end of the second high frequency silencer 4 and turbocharger 3 Mouth communicates, and the outlet side of the second high frequency silencer 4 is communicated with the high-pressure side tracheae 6 of intercooler 5.
Air inflow noise elimination system provided by the embodiments of the present application, in the case where cabin space anxiety, close to turbocharging The air inlet and air outlet side of device 3 is respectively provided with the first high frequency silencer 1 and the second high frequency silencer 4, and the first high frequency is eliminated the noise Device 1 between air cleaner 2 and turbocharger 3, the second high frequency silencer 4 be located at turbocharger 3 and intercooler 5 it Between, achieve the purpose that inhibit induction noise, has improved the quality sense of automobile.
Fig. 2 is showing for the partly cut-away of the first high frequency silencer in air inflow noise elimination system provided by the embodiment of the present application It is intended to, Fig. 3 is the part of the first high frequency silencer of another angle in air inflow noise elimination system provided by the embodiment of the present application The schematic diagram splitted.
As shown in Figures 2 and 3, implementation as one preferred: the first high frequency silencer 1 include first shell 12, First core pipe 13 and first end cover 14.
For first shell 12 generally in tubular, the first shell 12 in the present embodiment is taper tubular.First core pipe 13 is set It sets in the inside of first shell 12.The inlet end between the first core pipe 13 and first shell 12 is arranged in first end cover 14.
It is provided with first partition 18 on the outer wall of first core pipe 13, first partition 18 is by the first core pipe 13, first shell 12 The region surrounded between first end cover 14 is separated at least one first inner chamber body 15.First partition 18 preferably with the first core Pipe 13 is integrally formed, and 15 good airproof performance of first inner chamber body being consequently formed, noise elimination effect is more preferably.
The first sound attenuation hole 131, the inlet end of the first core pipe 13 and the outlet of air cleaner 2 are provided in first core pipe 13 Mouth communicates, and the inside of the first core pipe 13 is communicated by the first sound attenuation hole 131 with first inner chamber body 15, the outlet side of the first core pipe 13 It is communicated with the air inlet of turbocharger 3.
Inlet end of the gas from air cleaner 2 Jing Guo the first core pipe 13 enters inside the first core pipe 13, then passes through It crosses the first sound attenuation hole 131 and enters each first inner chamber body 15, achieve the purpose that eliminate noise, using the outlet of the first core pipe 13 End enters turbocharger 3.
The quantity of above-mentioned first inner chamber body 15 can be set according to actual needs, in the present embodiment, the first core pipe 13 Inlet end to outlet side be respectively cavity 1, cavity 2 152, cavity 3 153 and cavity 4 154.Cavity 1 and chamber The volume of body 2 152 is identical；The volume of cavity 1 and cavity 2 152 is respectively less than the volume of cavity 3 153；Cavity 3 153 Volume is less than the volume of cavity 4 154.Specifically, the volume of cavity 1 and cavity 2 152 may each be 0.15L, cavity three 153 volume can be 0.2L, and the volume of cavity 4 154 can be 0.3L.
Hierarchic structure is formed with it is possible to further which the outer wall of first shell 12 is arranged.Setting can satisfy above-mentioned in this way While the first inner chamber body 15 of different volumes, guarantee the uniform uniform thickness of outer wall of first shell 12, thus save material, processes It is convenient.
In addition, the inlet end of the first core pipe 13 is communicated by the first connecting tube 11 with the gas outlet of air cleaner 2, first The outlet side of core pipe 13 is communicated by the second connecting tube 16 with the air inlet of turbocharger 3.First connecting tube 11 and second connects Adapter tube 16 is preferably hose, to facilitate arrangement.
On the basis of the above embodiments, the first connector 17, the first connector 17 are further provided in first shell 12 One end communicated with the inside of the first core pipe 13.
Air inflow noise elimination system further includes the first relief tube 8, the first end of the first relief tube 8 and the low-pressure side gas of intercooler 5 Pipe 7 communicates, and the second end of the first relief tube 8 is communicated with the other end of the first connector 17.
The setting of first connector 17 and the first relief tube 8 can pass through the gas in the low-pressure side tracheae 7 of intercooler 5 First connector 17 is introduced into the first high frequency silencer 1, eliminates pressure release sound.
Fig. 4 is showing for the partly cut-away of the second high frequency silencer in air inflow noise elimination system provided by the embodiment of the present application It is intended to, the structure of the second high frequency silencer 4 can be identical as the structure of the first high frequency silencer 1, can also be different.The present embodiment In, the second high frequency silencer 4 includes second shell 42, the second core pipe 43 and second end cover 44.
The inside of second shell 42 is arranged in second core pipe 43.Second end cover 44 is arranged in the second core pipe 43 and second shell Outlet side between 42.
It is provided with second partition 48 on the outer wall of second core pipe 43, second partition 48 is by the second core pipe 43, second shell 42 The region surrounded between second end cover 44 is separated at least one second inner chamber body 45.Second is provided in second core pipe 43 to disappear Acoustic aperture 431；The inlet end of second core pipe 43 is communicated with the gas outlet of turbocharger 3, and the inside of the second core pipe 43 passes through second Sound attenuation hole 431 is communicated with second inner chamber body 45, and the outlet side of the second core pipe 43 is communicated with the high-pressure side tracheae 6 of intercooler 5.
Preferably, second inner chamber body 45 is six, and the inlet end along the second core pipe 43 is successively arranged to the direction of outlet side, And volume is sequentially reduced.It specifically can be cavity 5 451, cavity 6 452, cavity 7 453, cavity 8 454, cavity 9 455, chamber Body 10.
Hierarchic structure is formed with it is possible to further which the outer wall of second shell 42 is arranged.Setting can satisfy above-mentioned in this way While the second inner chamber body 45 of different volumes, guarantee the uniform uniform thickness of outer wall of second shell 42, thus save material, processes It is convenient.A hierarchic structure is arranged in the corresponding position of each second partition 48, can also be one corresponding with every two second partition 48 Hierarchic structure is not limited thereto.
The inlet end of second core pipe 43 can be communicated by third connecting tube 41 with the gas outlet of turbocharger 3, and second The outlet side of core pipe 43 can be communicated by the 4th connecting tube 46 with the high-pressure side tracheae 6 of intercooler 5.
Further, the second connector 47, one end of the second connector 47 and the second core pipe 43 are provided in second shell 42 Inside communicates；Air inflow noise elimination system further includes the second relief tube 9, the first end of the second relief tube 9 and the low-pressure side gas of intercooler 5 Pipe 7 communicates, and the second end of the second relief tube 9 is communicated with the other end of the second connector 47.
The setting of second connector 47 and the second relief tube 9 can pass through the gas in the low-pressure side tracheae 7 of intercooler 5 Second connector 47 is introduced into the second high frequency silencer 4, eliminates pressure release sound.
Referring to Fig.1, in the link position of the first relief tube 8 and the second relief tube 9, relief valve 10 can be set, pass through control The opening and closing of relief valve 10 processed flows into the first high frequency silencer 1 and/or the second high frequency silencer 4 to control pressure release gas.
Based on air inflow noise elimination system provided by any of the above-described embodiment, the application also provides a kind of engine, including upper State air inflow noise elimination system provided by any embodiment.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.

Claims (12)

1.一种进气消声系统，包括空气滤清器、涡轮增压器和中冷器，其特征在于，所述进气消声系统还包括：1. an air intake muffler system, comprising an air filter, a turbocharger and an intercooler, characterized in that the air intake muffler system also comprises: 第一高频消声器，所述第一高频消声器的进气端与所述空气滤清器的出气口相通，所述第一高频消声器的出气端与所述涡轮增压器的进气口相通；A first high-frequency muffler, the intake end of the first high-frequency muffler communicates with the air outlet of the air filter, and the air outlet of the first high-frequency muffler is connected with the air inlet of the turbocharger same; 第二高频消声器，所述第二高频消声器的进气端与所述涡轮增压器的出气口相通，所述第二高频消声器的出气端与所述中冷器的高压侧气管相通。The second high-frequency muffler, the intake end of the second high-frequency muffler communicates with the air outlet of the turbocharger, and the air outlet end of the second high-frequency muffler communicates with the high-pressure side air pipe of the intercooler . 2.根据权利要求1所述的进气消声系统，其特征在于，所述第一高频消声器包括：2. The intake muffler system according to claim 1, wherein the first high frequency muffler comprises: 第一壳体；the first shell; 第一芯管，设置在所述第一壳体的内部；a first core tube, disposed inside the first casing; 第一端盖，设置在所述第一芯管与所述第一壳体之间的进气端；a first end cover, disposed at the intake end between the first core tube and the first casing; 所述第一芯管的外壁上设置有第一隔板，所述第一隔板将所述第一芯管、所述第一壳体和所述第一端盖之间围成的区域分隔成至少一个第一内腔体；A first partition plate is arranged on the outer wall of the first core tube, and the first partition plate separates the area enclosed between the first core tube, the first shell and the first end cover into at least one first inner cavity; 所述第一芯管上设置有第一消声孔；The first core tube is provided with a first muffler hole; 所述第一芯管的进气端与所述空气滤清器的出气口相通，所述第一芯管的内部通过所述第一消声孔与所述第一内腔体相通，所述第一芯管的出气端与所述涡轮增压器的进气口相通。The air inlet end of the first core tube is communicated with the air outlet of the air filter, the interior of the first core tube communicates with the first inner cavity through the first muffler hole, and the The outlet end of the first core tube communicates with the air inlet of the turbocharger. 3.根据权利要求2所述的进气消声系统，其特征在于，所述第一内腔体为四个，沿所述第一芯管的进气端向出气端分别为腔体一、腔体二、腔体三和腔体四；3 . The air intake muffler system according to claim 2 , wherein there are four first inner cavities, and one cavity, one cavity and one cavity along the air inlet end to the air outlet end of the first core tube are respectively. 4 . Cavity 2, Cavity 3 and Cavity 4; 所述腔体一与所述腔体二的体积相同；The volume of the cavity 1 and the cavity 2 are the same; 所述腔体一与所述腔体二的体积均小于所述腔体三的体积；The volumes of the first cavity and the second cavity are both smaller than the volume of the third cavity; 所述腔体三的体积小于所述腔体四的体积。The volume of the third cavity is smaller than the volume of the fourth cavity. 4.根据权利要求2所述的进气消声系统，其特征在于，所述第一壳体的外壁形成有阶梯结构。4 . The air intake muffler system according to claim 2 , wherein a stepped structure is formed on the outer wall of the first housing. 5 . 5.根据权利要求2所述的进气消声系统，其特征在于，所述第一芯管的进气端通过第一连接管与所述空气滤清器的出气口相通，所述第一芯管的出气端通过第二连接管与所述涡轮增压器的进气口相通。5 . The air intake muffler system according to claim 2 , wherein the air intake end of the first core pipe is communicated with the air outlet of the air filter through a first connecting pipe, and the first The air outlet end of the core tube communicates with the air inlet of the turbocharger through the second connecting tube. 6.根据权利要求2所述的进气消声系统，其特征在于，所述第一壳体上设置有第一接头，所述第一接头的一端与所述第一芯管的内部相通；6. The air intake muffler system according to claim 2, wherein a first joint is provided on the first housing, and one end of the first joint is communicated with the inside of the first core pipe; 所述进气消声系统还包括第一泄压管，所述第一泄压管的第一端与所述中冷器的低压侧气管相通，所述第一泄压管的第二端与所述第一接头的另一端相通。The intake muffler system further includes a first pressure relief pipe, the first end of the first pressure relief pipe is communicated with the low-pressure side gas pipe of the intercooler, and the second end of the first pressure relief pipe is connected to the air pipe of the low pressure side of the intercooler. The other ends of the first connectors communicate with each other. 7.根据权利要求1-6任一项所述的进气消声系统，其特征在于，所述第二高频消声器包括：7. The intake muffler system according to any one of claims 1-6, wherein the second high-frequency muffler comprises: 第二壳体；the second shell; 第二芯管，设置在所述第二壳体的内部；a second core tube, arranged inside the second casing; 第二端盖，设置在所述第二芯管与所述第二壳体之间的出气端；a second end cover, disposed at the gas outlet end between the second core tube and the second shell; 所述第二芯管的外壁上设置有第二隔板，所述第二隔板将所述第二芯管、所述第二壳体和所述第二端盖之间围成的区域分隔成至少一个第二内腔体；A second partition plate is arranged on the outer wall of the second core tube, and the second partition plate separates the area enclosed between the second core tube, the second shell and the second end cover into at least one second inner cavity; 所述第二芯管上设置有第二消声孔；The second core tube is provided with a second muffler hole; 所述第二芯管的进气端与所述涡轮增压器的出气口相通，所述第二芯管的内部通过所述第二消声孔与所述第二内腔体相通，所述第二芯管的出气端与所述中冷器的高压侧气管相通。The intake end of the second core tube is communicated with the air outlet of the turbocharger, the interior of the second core tube communicates with the second inner cavity through the second muffler hole, and the The gas outlet end of the second core tube communicates with the high-pressure side gas pipe of the intercooler. 8.根据权利要求7所述的进气消声系统，其特征在于，所述第二内腔体为六个，沿所述第二芯管的进气端向出气端的方向依次排布，且体积依次减小。8 . The air intake muffler system according to claim 7 , wherein the number of the second inner cavities is six, which are sequentially arranged along the direction from the air intake end to the air outlet end of the second core tube, and The volume decreases successively. 9.根据权利要求7所述的进气消声系统，其特征在于，所述第二壳体的外壁形成有阶梯结构。9 . The air intake muffler system according to claim 7 , wherein a stepped structure is formed on the outer wall of the second housing. 10 . 10.根据权利要求7所述的进气消声系统，其特征在于，所述第二芯管的进气端通过第三连接管与所述涡轮增压器的出气口相通，所述第二芯管的出气端通过第四连接管与所述中冷器的高压侧气管相通。10 . The air intake muffler system according to claim 7 , wherein the air intake end of the second core pipe communicates with the air outlet of the turbocharger through a third connecting pipe, and the second core pipe communicates with the air outlet of the turbocharger. The gas outlet end of the core tube communicates with the high-pressure side gas pipe of the intercooler through a fourth connecting pipe. 11.根据权利要求7所述的进气消声系统，其特征在于，所述第二壳体上设置有第二接头，所述第二接头的一端与所述第二芯管的内部相通；11 . The air intake muffler system according to claim 7 , wherein a second joint is provided on the second casing, and one end of the second joint is communicated with the inside of the second core pipe; 11 . 所述进气消声系统还包括第二泄压管，所述第二泄压管的第一端与所述中冷器的低压侧气管相通，所述第二泄压管的第二端与所述第二接头的另一端相通。The intake muffler system further includes a second pressure relief pipe, the first end of the second pressure relief pipe is communicated with the low-pressure side gas pipe of the intercooler, and the second end of the second pressure relief pipe is connected to the air pipe of the low pressure side of the intercooler. The other ends of the second connectors communicate with each other. 12.一种发动机，其特征在于，包括权利要求1-11中任一项所述的进气消声系统。12. An engine, characterized by comprising the intake muffler system according to any one of claims 1-11.
CN201821524919.0U 2018-09-18 2018-09-18 Intake muffler system and engine Active CN208996847U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110425143A (en) * 2019-07-31 2019-11-08 奇瑞商用车（安徽）有限公司 A kind of fuel-cell vehicle air assist system silencing apparatus and its mounting structure
CN111042962A (en) * 2019-12-11 2020-04-21 吉利汽车研究院（宁波）有限公司 Air inlet silencer of engine
CN111287840A (en) * 2020-04-08 2020-06-16 奇瑞商用车（安徽）有限公司 Silencer for engine supercharger
CN114109923A (en) * 2020-08-25 2022-03-01 上海汽车集团股份有限公司 Silencer and car

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110425143A (en) * 2019-07-31 2019-11-08 奇瑞商用车（安徽）有限公司 A kind of fuel-cell vehicle air assist system silencing apparatus and its mounting structure
CN111042962A (en) * 2019-12-11 2020-04-21 吉利汽车研究院（宁波）有限公司 Air inlet silencer of engine
CN111287840A (en) * 2020-04-08 2020-06-16 奇瑞商用车（安徽）有限公司 Silencer for engine supercharger
CN111287840B (en) * 2020-04-08 2024-11-12 奇瑞汽车股份有限公司 Engine supercharger silencer
CN114109923A (en) * 2020-08-25 2022-03-01 上海汽车集团股份有限公司 Silencer and car
CN114109923B (en) * 2020-08-25 2024-05-10 上海汽车集团股份有限公司 Muffler and automobile

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