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WO2017039120A1 - Silencieux de véhicule - Google Patents

Silencieux de véhicule Download PDF

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Publication number
WO2017039120A1
WO2017039120A1 PCT/KR2016/005516 KR2016005516W WO2017039120A1 WO 2017039120 A1 WO2017039120 A1 WO 2017039120A1 KR 2016005516 W KR2016005516 W KR 2016005516W WO 2017039120 A1 WO2017039120 A1 WO 2017039120A1
Authority
WO
WIPO (PCT)
Prior art keywords
case
passage
vehicle
passage member
vehicle silencer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2016/005516
Other languages
English (en)
Korean (ko)
Inventor
신재윤
이정욱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LS Mtron Ltd
Original Assignee
LS Mtron Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020160061178A external-priority patent/KR102522668B1/ko
Application filed by LS Mtron Ltd filed Critical LS Mtron Ltd
Priority to US15/755,979 priority Critical patent/US10900449B2/en
Priority to EP16842086.7A priority patent/EP3346119A4/fr
Priority to CN201680050680.5A priority patent/CN108026873B/zh
Publication of WO2017039120A1 publication Critical patent/WO2017039120A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification

Definitions

  • the vehicle silencer includes a first case installed in the vehicle; A second case coupled to the first case; A resonance chamber located between the first case and the second case; And a through hole formed through the second case such that the inside of the second case and the resonance chamber communicate with each other.
  • the second case may include a first passage member positioned at one side of the through hole, and a second passage member positioned at the other side of the through hole spaced apart from the first passage member in a first direction.
  • the first through member may be formed to decrease in thickness toward the first direction.
  • FIG. 1 is a schematic cross-sectional view of a vehicle silencer according to the prior art.
  • 5 to 7 are schematic cross-sectional views showing an enlarged portion A of FIG. 3 in the vehicle silencer according to the present invention.
  • the interior of the resonance chamber 4 and the second case 3 is in communication with each other through the through hole (5). Accordingly, the gas flowing along the inside of the second case 3 flows into the resonance chamber 4 through the through hole 5, and as the frequency is tuned in the resonance chamber 4. Noise is reduced.
  • the resonance chamber 4 may be formed in the form of a circular ring as a whole, but is not limited thereto and may be formed in another form as long as it can reduce the noise of the gas.
  • the resonance chamber 4 may be formed in various forms according to the shape of the inner surface 2a of the first case 2 and the shape of the outer surface 3b of the second case 3.
  • the vehicle silencer 1 according to the present invention can not only reduce the noise generated by the gas by using the resonance chamber 4, but also the gas generated in the process of passing through the passage hole 5. Implemented to reduce turbulent noise. Therefore, the vehicle silencer 1 according to the present invention can enhance the noise reduction function.
  • the vehicle silencer 1 When the gas flows inside the second case 3 in the first direction (FD arrow direction), the first pass surface 31 is connected to the inner surface 3a of the second case 3.
  • An included angle 31a may be formed as an inclined surface that forms an obtuse angle.
  • the vehicle silencer 1 according to the present invention may be implemented such that a flow shear layer is generated at a point spaced apart from a point at which the first passage surface 31 and the inner surface 3a of the second case 3 are connected. Can be. Accordingly, the vehicle silencer 1 according to the present invention adjusts the growth direction in which the flow shear layer grows along the first direction (FD arrow direction), as indicated by the dotted line in FIG. It is possible to reduce the area likely to collide with the passage face 32.
  • the vehicle silencer 1 can reduce the turbulence noise while increasing the strength of the second case 3 by increasing the thickness of the second case 3, thereby reducing the noise.
  • the reinforcement can be further enhanced, but also lightweight materials such as plastics and low cost materials can be used to contribute to the weight reduction and low cost of the vehicle.
  • the first passing surface 31 may be formed as an inclined surface having an acute angle between the outside angle 31b of the second case 3 and the outer surface 3b.
  • the second passing surface 32 is formed as an inclined surface inclined with respect to the second axial direction (Y-axis direction). Accordingly, the second passing surface 32 is not disposed in a direction perpendicular to the inner surface 3a of the second case 3. Therefore, when gas flows in the first direction (FD arrow direction) along the inside of the second case 3, the vehicle silencer 1 according to the present invention before the flow in the second passing surface (32) It is possible to reduce the area where the fault can collide.
  • the vehicle silencer 1 can reduce the turbulence noise while increasing the strength of the second case 3 by increasing the thickness of the second case 3, thereby reducing the noise reduction function. Not only can it be strengthened, but also light weight materials such as plastics and low cost materials can be used to contribute to the weight reduction and low cost of the vehicle.
  • any one of the first passing surface 31 and the second passing surface 32 may be formed as an inclined surface. Both the first passing surface 31 and the second passing surface 32 may be formed as inclined surfaces.
  • the second case 3 according to the first embodiment may have the first passing surface 31 and the inner surface of the second case 3.
  • the angle 31a between 3a forms an obtuse angle
  • the angle 32a between the second passing surface 32 and the inner surface 3a of the second case 3 forms an acute angle
  • the external angle 32b between the outer surface 3b of the second case 3 may be an obtuse angle.
  • the angle 31b between the first passing surface 31 and the outer surface 3b of the second case 3 may be implemented to form an acute angle.
  • the second case 3 has a first passage member 33 positioned at one side of the through hole 5, and a first direction (FD arrow direction) from the first passage member 33. It may include a second passing member 34 which is spaced apart by) located on the other side of the through hole (5).
  • the first through member 33 is formed to decrease in thickness toward the first direction (FD arrow direction). Accordingly, one surface of the passage member 33 is not disposed in a direction perpendicular to the inner surface 3a of the second case 3.
  • One surface of the first through member 33 may be a surface facing the second through member 34 from the first through member 33 and may correspond to the first through surface 31. .
  • the vehicle silencer 1 can reduce the turbulence noise while increasing the strength of the second case 3 by increasing the thickness of the second case 3, thereby reducing the noise.
  • the reinforcement can be further enhanced, but also lightweight materials such as plastics and low cost materials can be used to contribute to the weight reduction and low cost of the vehicle.
  • the second passage member 34 is inclined to protrude to the maximum length in the second direction (BD arrow direction) at the point 32c (shown in FIG. 5) connected to the inner surface 3a of the second case 3. It can be formed as.
  • the gas may flow in the first direction (FD arrow direction) inside the second case (3).
  • the vehicle silencer 1 according to the present invention can reduce the area where the flow shear layer growing in the first direction (FD arrow direction) can collide with the second passage member 34, and the first It is possible to reduce the magnitude of turbulent foreclosure perturbation that occurs as the flow shear layer growing in the direction (FD arrow direction) impinges on the second passage member 34.
  • the vehicle silencer 1 can reduce the turbulence noise while increasing the strength of the second case 3 by increasing the thickness of the second case 3, thereby reducing the noise.
  • the reinforcement can be further enhanced, but also lightweight materials such as plastics and low cost materials can be used to contribute to the weight reduction and low cost of the vehicle.
  • the second passage member 32 is formed on the second passage member 34, the point 32c connected to the inner surface 3a of the second case 3 is the second passage member 34.
  • the second passing surface 32 is a point connected to the inner surface 3a of the second case 3.
  • the length 5L of the through hole 5 based on the first axial direction (X-axis direction) is based on the second axial direction (Y-axis direction).
  • the value divided by the thickness 3D of the second case 3 may be greater than 2.
  • the length 5L of the through hole 5 divided by the thickness 3D of the case 3 is less than 2
  • the length 5L of the through hole 5 is short, so that the flow shear layer sufficiently grows.
  • the degree of reduction of noise generated by the gas in the vehicle due to the generation of turbulent noise can be reduced.
  • the length 5L of the through hole 5 divided by the thickness 3D of the case 3 is greater than 2
  • the length 5L of the through hole 5 is equal to the flow shear layer.
  • the area where the flow shear layer impinges on the second pass face 32 is reduced. Accordingly, the degree of reduction of noise generated by the gas in the vehicle due to the generation of turbulent noise can be increased.
  • the second case 3 according to the second embodiment includes the first through member 33 and the second through member 34. Since the first passage member 33 and the second passage member 34 are substantially the same as those described in the second case 3 according to the second embodiment described above, only portions having differences are described.
  • the first passage member 33 protrudes to the maximum length in the first direction (FD arrow direction) between the inner surface 3a of the second case 3 and the outer surface 3b of the second case 3. It may be formed to. Accordingly, the point 31d protruding at the maximum length in the first direction (FD arrow direction) from the first passing member 33 is the second case based on the second axis direction (Y-axis direction). It may be located at a position spaced apart from each of the inner surface (3a) of (3) and the outer surface (3b) of the second case (3).
  • the vehicle silencer 1 according to the present invention when the gas flows in the first direction (FD arrow direction) inside the second case 3, the vehicle silencer 1 according to the present invention is one surface of the first passage member 33 and the The flow shear layer may be formed at a point spaced from a point at which the inner surface 3a of the second case 3 is connected. Therefore, the vehicle silencer 1 according to the present invention adjusts the growth direction in which the flow shear layer grows along the first direction (FD arrow direction) as shown by the dotted line in FIG. The area which can collide with the two-pass member 34 can be reduced. Accordingly, the vehicle silencer 1 according to the present invention can reduce the turbulence noise while increasing the strength of the second case 3 by increasing the thickness of the second case 3, thereby reducing the noise.
  • the point 31d protruding at the maximum length in the first direction (FD arrow direction) from the first passing member 33 is the second case 3 based on the second axis direction (Y-axis direction). It may be located at a position spaced at an equal distance from each of the inner surface (3a) and the outer surface (3b) of the second case (3).
  • the first passage member 31 is formed on the first passage member 33.
  • the first passing surface 31 corresponds to one surface of the first passing member 33.
  • the point 31d protruding at the maximum length in the first direction (FD arrow direction) from the first passing member 33 is the first passage surface 31 in the first direction (FD arrow direction). ) Is the point that protrudes to the maximum length.
  • the first passing surface 31 may be formed as an inclined surface or curved surface.
  • the first passage member 33 is the first passage surface based on the second axis direction (Y-axis direction) as shown in FIG.
  • the cross section of the (31) is implemented to form a semi-elliptic shape, so that the first direction FD between the inner surface 3a of the second case 3 and the outer surface 3b of the second case 3. It may be formed to protrude to the maximum length in the direction of the arrow).
  • the first through member 33 may be implemented such that a cross section of the first through surface 31 based on the second axial direction (Y-axis direction) forms a semicircular shape.
  • the first passage member 33 is formed of the first passage surface 31 with respect to the second axial direction (Y-axis direction). Since the cross section is formed to have a triangular shape, it protrudes to the maximum length in the first direction (FD arrow direction) between the inner surface 3a of the second case 3 and the outer surface 3b of the second case 3. It may be formed to.
  • the second passage member 34 protrudes to the maximum length in the second direction (BD arrow direction) between the inner surface 3a of the second case 3 and the outer surface 3b of the second case 3. It may be formed to. Accordingly, the point 32d protruding at the maximum length in the second direction (BD arrow direction) from the second passing member 34 is the second case based on the second axis direction (Y-axis direction). It may be located at a position spaced apart from each of the inner surface (3a) of (3) and the outer surface (3b) of the second case (3). In this case, when gas flows in the first direction (FD arrow direction) inside the second case 3, the vehicle silencer 1 according to the present invention grows in the first direction (FD arrow direction).
  • the flow shear layer may reduce the area capable of colliding with the second passage member 34, and as the flow shear layer growing in the first direction (FD arrow direction) impinges on the second passage member 34. It is possible to reduce the magnitude of turbulent foreclosure perturbation that occurs. Accordingly, the vehicle silencer 1 according to the present invention can reduce the turbulence noise while increasing the strength of the second case 3 by increasing the thickness of the second case 3, thereby reducing the noise. Not only can the reinforcement can be further enhanced, but also lightweight materials such as plastics and low cost materials can be used to contribute to the weight reduction and low cost of the vehicle.
  • the point 32d protruding at the maximum length from the second passage member 34 in the second direction is the second case 3 based on the second axis direction (Y-axis direction). It may be located at a position spaced at an equal distance from each of the inner surface (3a) and the outer surface (3b) of the second case (3).
  • the second passage member 32 may be formed on the second passage member 34.
  • the second passing surface 32 corresponds to one surface of the second passing member 34.
  • the point 32d protruding at the maximum length from the second passing member 34 in the second direction (BD arrow direction) is the second passing surface 32 in the second direction (BD arrow direction).
  • the second passing surface 32 may be formed as an inclined surface or curved surface.
  • the second passage member 34 is the second passage surface based on the second axial direction (Y-axis direction) as shown in FIG.
  • the cross-section of the 32 is implemented to form a semi-elliptic shape, so that the second direction BD is formed between the inner surface 3a of the second case 3 and the outer surface 3b of the second case 3. It may be formed to protrude to the maximum length in the direction of the arrow).
  • the second passage member 34 may be implemented such that the cross section of the second passage surface 32 with respect to the second axial direction (Y-axis direction) forms a semicircular shape.
  • the second passage member 34 is formed of the second passage surface 32 on the basis of the second axial direction (Y-axis direction). Since the cross section is formed to have a triangular shape, it protrudes to the maximum length in the second direction (BD arrow direction) between the inner surface 3a of the second case 3 and the outer surface 3b of the second case 3. It may be formed to.
  • the second case 3 may be implemented in various embodiments.
  • 5 and 6 illustrate that the first passage surface 31 and the second passage surface 32 are formed to correspond to each other.
  • the present invention is not limited thereto, and the first passage surface 31 and the first passage surface are not limited thereto.
  • the two passing surfaces 32 may be formed in different shapes from each other.
  • the second case 3 has a first pass surface 31 formed in an inclined surface as described in the first embodiment, and a semi-elliptical cross section as described in the second embodiment. And it may be implemented by a combination of the second passing surface 32 formed in any one of the semi-circular cross section.
  • the second case 3 has a first passage surface 31 formed in any one of a semi-elliptic cross section, a semi-circular cross section, and a triangular cross section as described in the second embodiment. , And may be implemented as a combination of the second passing surface 32 formed of the inclined surface as described in the first embodiment.
  • the thickness of the second case 3 decreases as the first passage member 33 faces the first direction (FD arrow direction), and the second passage member 34 has the second direction. It may be formed in a form that the thickness is reduced toward the (BD arrow direction).
  • the vehicle silencer 1 according to the present invention is implemented to include the second case 3 according to the first embodiment and the second case 3 according to the second embodiment, thereby reducing turbulence noise.
  • the high-strength and high-density materials such as metal used in the existing silencer
  • low-density materials such as plastic
  • FIG. 5 This is a comparative example in which the first passing surface 31 and the second passing surface 32 are arranged in a direction perpendicular to the inner surface 3a of the second case 3, as shown in FIG. 4, FIG.
  • FIG. 5 a first embodiment in which the first passing surface 31 and the second passing surface 32 are formed as an inclined surface inclined with respect to the second axial direction (Y-axis direction), and FIG. 6.
  • FIG. 2 the experimental results obtained by calculating turbulent kinetic energy through flow analysis for the second embodiment in which the first passage surface 31 and the second passage surface 32 are curved are obtained. have. This will be described in detail with reference to FIGS. 4 to 13 as follows.
  • the numbers arranged along the vertical direction on the left side are the magnitude of the turbulent kinetic energy
  • the symbols arranged along the vertical direction on the left side of the numbers indicate the turbulent kinetic energy. This is to display them by size range. These numbers and symbols are located on the upper side, the larger the magnitude of the turbulent energy.
  • FIG. 8 and 9 are experimental results of the comparative example as shown in FIG. 4, and FIG. 9 is an enlarged view of a portion B of FIG. 8.
  • Part B of FIG. 8 is an area including a part where the second passage surface 32 is formed in FIG. 4.
  • the symbol corresponding to the maximum value of the magnitude of the turbulent kinetic energy ranges from 1.588e + 003 to 1.764 + 003 in the vicinity of the second passing surface 32. Rather, symbols with a large size range of turbulent kinetic energy are displayed over a fairly wide area around the second passage surface 32.
  • FIGS. 10 and 11 are experimental results of the first embodiment as shown in FIG. 5, and FIG. 11 is an enlarged view of a portion C of FIG. 10.
  • a portion C of FIG. 10 is a region including a portion where the second passage surface 32 is formed in FIG. 5.
  • the first embodiment has a symbol corresponding to a maximum value of 1.588e + 003 to 1.764 + 003 with a magnitude range of turbulent energy around the second passage surface 32. Is not displayed. Accordingly, it can be seen that the first embodiment can reduce the turbulent kinetic energy in the vicinity of the second passage surface 32, as compared with the comparative example, thereby further reducing turbulent noise.
  • a symbol belonging to a relatively small size range of 1.766e + 002 to 3.530e + 002 has a size range of the turbulent kinetic energy, and as shown in FIG. Unlike the display, as shown in FIG. 11, in the first embodiment, it is indicated in the area where the second passing surface 32 is located. Accordingly, it can be seen that the first embodiment can reduce the magnitude of the turbulent kinetic energy from the region where the second passing surface 32 is located, as compared with the comparative example, thereby further reducing turbulent noise.
  • FIG. 12 and 13 are experimental results of the second embodiment as shown in FIG. 6, and FIG. 13 is an enlarged view of part D of FIG. 12.
  • Part D of FIG. 12 is an area including a part in which the second passing surface 32 is formed in FIG. 6.
  • the second embodiment has a symbol corresponding to a maximum value of 1.588e + 003 to 1.764 + 003 in the magnitude range of the turbulent energy around the second passing surface 32, unlike the comparative example. Is not displayed. Accordingly, it can be seen that the second embodiment can reduce the turbulent kinetic energy in the vicinity of the second passing surface 32, as compared with the comparative example, thereby further reducing turbulent noise.
  • the symbols belonging to the larger size range of the turbulent kinetic energy than the 5.294e + 002 have the first axis direction (X axis direction) and the second axis direction. Since it occupies a smaller area with respect to the (Y-axis direction), it can be seen that turbulent noise can be further reduced.
  • the vehicle silencer 1 may include a partition member 6.
  • the partition member 6 is located between the inner surface 2a of the first case 2 and the outer surface 3b of the second case 3.
  • the partition member 6 partitions the space between the inner surface 2a of the first case 2 and the outer surface 3b of the second case 3 into a plurality of spaces.
  • the vehicle silencer 1 according to the present invention may be implemented to include a plurality of resonance chambers 4, 4 ′, 4 ′′.
  • the vehicle silencer 1 according to the present invention may be the resonance. It may be implemented to include a plurality of through holes (5, 5 ', 5 ") for connecting each of the threads (4, 4', 4") in communication with the interior of the second case (3).
  • the vehicle silencer 1 according to the present invention uses a plurality of resonance chambers 4, 4 ′, and 4 ′′ to smoothly tune the gas in the high frequency band and the gas in the low frequency band. Since it is implemented to achieve, it is possible to attenuate the frequency noise of the wideband, and therefore, the vehicle silencer 1 according to the present invention can further enhance the noise reduction function
  • the resonance chambers 4, 4 ', 4 May be formed in different sizes.
  • the through holes 5, 5 ′ and 5 ′′ may be formed in different sizes.
  • Each of the portions in which the through holes 5, 5 ′ and 5 ′′ are formed may include the second case 3 described above. Various embodiments of) may be applied.
  • the vehicle silencer 1 according to the present invention includes two resonance members 4 and three through holes 5 including two partition members 6 and 6 ′.
  • the present invention is not limited thereto, and the vehicle silencer 1 according to the present invention includes one or three or more partition members 6, and each of two or four resonance chambers 4 and the through holes 5, respectively. It may be implemented to include the above.
  • the partition member 6 may be formed in a circular ring shape as a whole, but is not limited thereto. If the partition member 6 may be divided into a plurality of resonance chambers, the partition member 6 may be formed in another shape. The partition member 6 may be integrally formed with the second case 3.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

La présente invention concerne un silencieux de véhicule comprenant : une première enveloppe située dans un véhicule ; une deuxième enveloppe accouplée à la première enveloppe ; une chambre de résonance positionnée entre la première enveloppe et la deuxième enveloppe ; et un trou de passage formé en pénétrant dans la deuxième enveloppe, de sorte que l'intérieur de la deuxième enveloppe et la chambre de résonance communiquent entre eux au travers de celui-ci, où la deuxième enveloppe comprend un premier élément de passage formé de façon que l'épaisseur de celui-ci diminue progressivement dans une première direction.
PCT/KR2016/005516 2015-09-02 2016-05-25 Silencieux de véhicule Ceased WO2017039120A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US15/755,979 US10900449B2 (en) 2015-09-02 2016-05-25 Vehicle silencer
EP16842086.7A EP3346119A4 (fr) 2015-09-02 2016-05-25 Silencieux de véhicule
CN201680050680.5A CN108026873B (zh) 2015-09-02 2016-05-25 车辆消音器

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20150124160 2015-09-02
KR10-2015-0124160 2015-09-02
KR1020160061178A KR102522668B1 (ko) 2015-09-02 2016-05-19 차량용 소음기
KR10-2016-0061178 2016-05-19

Publications (1)

Publication Number Publication Date
WO2017039120A1 true WO2017039120A1 (fr) 2017-03-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2016/005516 Ceased WO2017039120A1 (fr) 2015-09-02 2016-05-25 Silencieux de véhicule

Country Status (1)

Country Link
WO (1) WO2017039120A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115306607A (zh) * 2022-08-15 2022-11-08 哈尔滨工程大学 一种用于涡轮增压器的组合式进气消声结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011247104A (ja) * 2010-05-24 2011-12-08 Inoac Corp 吸気ダクト
JP2012087797A (ja) * 2010-10-19 2012-05-10 Jaguar Cars Ltd エアダクトアッテネータ
KR20130117239A (ko) * 2012-04-18 2013-10-25 삼성중공업 주식회사 사이드 브랜치형 소음기
KR20130142997A (ko) * 2010-08-11 2013-12-30 보르그워너 인코퍼레이티드 터보차저
KR20150095437A (ko) * 2014-02-13 2015-08-21 엘에스엠트론 주식회사 차량용 공명기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011247104A (ja) * 2010-05-24 2011-12-08 Inoac Corp 吸気ダクト
KR20130142997A (ko) * 2010-08-11 2013-12-30 보르그워너 인코퍼레이티드 터보차저
JP2012087797A (ja) * 2010-10-19 2012-05-10 Jaguar Cars Ltd エアダクトアッテネータ
KR20130117239A (ko) * 2012-04-18 2013-10-25 삼성중공업 주식회사 사이드 브랜치형 소음기
KR20150095437A (ko) * 2014-02-13 2015-08-21 엘에스엠트론 주식회사 차량용 공명기

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3346119A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115306607A (zh) * 2022-08-15 2022-11-08 哈尔滨工程大学 一种用于涡轮增压器的组合式进气消声结构

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