CN111648883A - Air inlet pipeline system vibration/noise reduction device - Google Patents

Air inlet pipeline system vibration/noise reduction device Download PDF

Info

Publication number
CN111648883A
CN111648883A CN202010630886.3A CN202010630886A CN111648883A CN 111648883 A CN111648883 A CN 111648883A CN 202010630886 A CN202010630886 A CN 202010630886A CN 111648883 A CN111648883 A CN 111648883A
Authority
CN
China
Prior art keywords
egr
air inlet
bracket
connecting pipe
pipe clamp
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.)
Granted
Application number
CN202010630886.3A
Other languages
Chinese (zh)
Other versions
CN111648883B (en
Inventor
韦锦顺
李乾语
卢响
石彦明
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.)
Anhui Hualing Automobile Co Ltd
Original Assignee
Anhui Hualing Automobile Co 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
Application filed by Anhui Hualing Automobile Co Ltd filed Critical Anhui Hualing Automobile Co Ltd
Priority to CN202010630886.3A priority Critical patent/CN111648883B/en
Publication of CN111648883A publication Critical patent/CN111648883A/en
Application granted granted Critical
Publication of CN111648883B publication Critical patent/CN111648883B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/41—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
    • 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
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1015—Air intakes; Induction systems characterised by the engine type
    • F02M35/10157—Supercharged engines
    • 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
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
    • 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
    • F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
    • 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
    • F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vibration Prevention Devices (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

The invention discloses a shock absorption and noise reduction device of an air inlet pipeline system, which comprises an EGR air inlet connecting pipe clamp and an EGR air inlet connecting pipe bracket, wherein the EGR air inlet connecting pipe clamp is fixedly arranged on the EGR air inlet connecting pipe clamp, the EGR air inlet connecting pipe clamp is used for fixedly sleeving an EGR air inlet connecting pipe, and a shock absorption part is arranged on the inner peripheral side of the EGR air inlet connecting pipe clamp. Above-mentioned air inlet pipeline system vibration/noise reduction device is through setting up EGR at the pipeline section of EGR air inlet connecting pipe and admitting air the connecting pipe clamp and fix EGR air inlet connecting pipe, through avoiding the cantilever overlength and alleviate the vibration to further realize vibration/noise reduction's function through shock-absorbing parts's suit, thereby continue engine life.

Description

Air inlet pipeline system vibration/noise reduction device
Technical Field
The invention relates to the technical field of engine shock absorption and noise reduction, in particular to a shock absorption and noise reduction device for an air inlet pipeline system.
Background
In the process of continuous development of engine technology, the emission requirements of the engine are higher and higher.
The natural gas heavy engine has very big promotion in many aspects such as economic nature, feature of environmental protection, but gas machine is more on satisfying the national emission's basis air intake system series connection part, easily forms the cantilever and increases vibrations, causes some pipelines because of vibrations fracture appear fracture, bolt fracture, support fracture and intake manifold fracture, leads to the engine to catch fire and life reduces.
Therefore, an urgent need exists in the art for a shock absorbing and noise reducing device for an intake pipe system that effectively reduces the vibration of the intake system of an engine and prolongs the service life of the engine.
Disclosure of Invention
The invention aims to provide a shock absorption and noise reduction device of an air inlet pipeline system, which is characterized in that an EGR air inlet connecting pipe bracket is arranged on a pipe section of an EGR air inlet connecting pipe, the EGR air inlet connecting pipe is fixed by an EGR air inlet connecting pipe clamp, vibration is reduced by avoiding overlong a cantilever, and the shock absorption and noise reduction functions are further realized by sleeving a shock absorption part, so that the service life of an engine is prolonged.
In order to achieve the purpose, the invention provides a shock absorption and noise reduction device for an air inlet pipeline system, which comprises an EGR air inlet connecting pipe clamp and an EGR air inlet connecting pipe bracket, wherein the EGR air inlet connecting pipe clamp is fixedly installed on the EGR air inlet connecting pipe clamp, the EGR air inlet connecting pipe clamp is used for fixedly sleeving an EGR air inlet connecting pipe, and a shock absorption part is arranged on the inner peripheral side of the EGR air inlet connecting pipe clamp.
The damping part is a damping washer used for firmly wrapping the EGR air inlet connecting pipe.
The damping washer is specifically a steel wire damping washer.
The steel wire shock absorption gasket is formed by pressing at least two layers of wire meshes, and a plurality of meshes are woven on each wire mesh.
The silk screen is made of stainless steel, and the shape of the meshes is infinity.
The silk diameter of the silk screen is 0.4-0.6 mm, and the aperture of the meshes is 0.7-0.8 mm.
The two ends of the shock absorption gasket are outwards protruded.
The EGR air inlet connecting pipe clamp is provided with an adjustable pipe clamp mounting hole which is fixedly connected with the EGR air inlet connecting pipe support after the mounting position is adjusted.
The EGR module combined type support is used for installing and fixing the EGR module on the cylinder body.
EGR module combination formula support includes fixed first support of aggregate erection and second support, first support with the second support all is equipped with the first adjustable bracket mounting hole that adjusts the mounting position after-fixing and links to each other, first support still is equipped with the second adjustable bracket mounting hole that is used for adjusting mounting position after-fixing with the EGR module, the second support still is equipped with the third adjustable bracket mounting hole that is used for adjusting mounting position after-fixing with the cylinder body.
Compared with the prior art, the air inlet pipeline system damping and noise reducing device provided by the invention comprises an EGR air inlet connecting pipe bracket and an EGR air inlet connecting pipe clamp, wherein the EGR air inlet connecting pipe clamp is fixedly arranged on the EGR air inlet connecting pipe bracket; the air inlet pipeline system damping and noise reducing device realizes the installation and fixation of an EGR air inlet connecting pipe clamp through an EGR air inlet connecting pipe bracket, realizes the sleeving and fixation of the EGR air inlet connecting pipe through the EGR air inlet connecting pipe clamp, and is characterized in that a damping part is positioned between the EGR air inlet connecting pipe and the EGR air inlet connecting pipe clamp; this air inlet pipeline system vibration/noise reduction device is equivalent to increase a strong point in the intermediate position of the pipeline section of EGR air inlet connecting pipe, admits air the connecting pipe by EGR air inlet connecting pipe support and EGR air inlet connecting pipe clamp fixed EGR, alleviates EGR air inlet connecting pipe and leads to the longer vibrations problem of cantilever because of length is longer, and shock-absorbing component can further realize vibration/noise reduction's function simultaneously, is favorable to continuing the life of engine.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of an application of a vibration/noise reduction apparatus for an intake pipe system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an EGR intake connecting pipe clamp in FIG. 1;
FIG. 3 is a schematic structural view of the combined bracket of the EGR module of FIG. 1;
fig. 4 is a schematic structural view of the cushion ring of fig. 2.
Wherein:
the EGR gas inlet device comprises a 1-EGR gas inlet connecting pipe clamp, a 2-EGR gas inlet connecting pipe support, a 3-EGR gas inlet connecting pipe, a 4-EGR module combined support, a 5-EGR module, a 6-cylinder body, a 11-damping gasket, a 12-adjustable pipe clamp mounting hole, a 111-mesh hole, a 112-wire mesh, a 41-first support, a 42-second support, a 43-first adjustable support mounting hole, a 44-second adjustable support mounting hole and a 45-third adjustable support mounting hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 4, in which fig. 1 is a schematic application diagram of a damping and noise reducing device for an intake pipe system according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of an EGR intake connecting pipe clamp in fig. 1, fig. 3 is a schematic structural diagram of an EGR module combined bracket in fig. 1, and fig. 4 is a schematic structural diagram of a damping washer in fig. 2.
In a first specific embodiment, the intake pipeline system damping and noise reducing device provided by the invention comprises an EGR intake connecting pipe clamp 1 and an EGR intake connecting pipe bracket 2, wherein the EGR intake connecting pipe bracket 2 can be arranged at any side of an intake connecting pipe 3, and the EGR intake connecting pipe clamp 1 and the EGR intake connecting pipe bracket 2 are used for providing a mounting and fixing effect on the intake connecting pipe 3; in the process of installation and fixation, the EGR air inlet connecting pipe clamp 1 is firstly installed and fixed on the EGR air inlet connecting pipe bracket 2, and the EGR air inlet connecting pipe clamp 1 is sleeved and fixed with the EGR air inlet connecting pipe 3, so that the EGR air inlet connecting pipe 3 is fixedly installed.
Besides, the inner peripheral side of the EGR air inlet connecting pipe clamp 1 is provided with a damping component, so that when the EGR air inlet connecting pipe clamp 1 is sleeved and fixed with the EGR air inlet connecting pipe 3, the damping component is positioned on and tightly contacted with the EGR air inlet connecting pipe clamp 1 and the EGR air inlet connecting pipe 3, the effect of weakening and buffering vibration is provided, and the vibration of the EGR air inlet connecting pipe 3 is reduced; the shock absorbing member may be selected from members having an elastic buffering function, such as springs, rubbers, and the like.
In the embodiment, aiming at the vibration problem of the air inlet pipeline system, particularly the vibration problem that the cantilever is long due to the long length of the EGR air inlet connecting pipe 3, the air inlet pipeline system damping and noise reducing device is equivalent to adding a fixed supporting point at the middle position of the pipe section of the EGR air inlet connecting pipe 3, and the EGR air inlet connecting pipe 3 is fixed by the EGR air inlet connecting pipe bracket 2 and the EGR air inlet connecting pipe clamp 1 to reduce the vibration; on this basis, EGR admit air connecting pipe 3 and produce the vibration, increase the vibration absorbing component in the pipe clamp and effectively reduce the vibration that EGR admit air connecting pipe 3 produced, utilize vibration absorbing component can further realize vibration/noise reduction's function, the effectual fracture problem that EGR admit air connecting pipe 3 produced because of the vibration that has protected is favorable to continuing the life of engine.
Illustratively, the damping component is a damping washer 11, the material of the damping washer 11 includes, but is not limited to, metal and nonmetal, and the damping washer 11 is used to firmly wrap the EGR inlet connection pipe 3 to achieve damping and noise reduction.
Exemplarily, damping washer 11 specifically is steel wire damping washer, and EGR air inlet connection pipe clamp 1 rigidity is variable, and EGR air inlet connection pipe clamp 1 is fixed in between the steel wire damping washer to further fix air inlet connection pipe 3 through steel wire damping washer, steel wire damping washer's resilience is better, and the life-span is longer moreover, and EGR air inlet connection pipe clamp 1's commonality is strong.
More specifically, the steel wire cushion ring is formed by pressing at least two layers of wire mesh 112, and a plurality of mesh holes 111 are woven on each wire mesh 112.
Illustratively, the material of the wire mesh 112 is stainless steel, the shape of the mesh 111 is infinity shape, and the damping washer 11 tightly wraps the EGR inlet connection pipe 3, more firmly reduces rigid connection, can be assembled under different pipe diameters, and has the characteristics of high temperature resistance, corrosion resistance, elasticity and high reliability.
Illustratively, the diameter of the silk screen 112 is 0.4-0.6 mm, and the aperture of the mesh 111 is 0.7-0.8 mm; preferably, the wire diameter of the wire mesh 112 is 0.5mm, and the hole diameter of the mesh 111 is 0.76 mm.
In a specific embodiment, both ends of the damping washer 11 are outwards protruded, and the height of the protrusions is 2mm, so that the pipe clamp limiting effect and better mould forming can be effectively achieved.
In a specific embodiment, the EGR air inlet connection pipe clamp 1 is provided with two adjustable pipe clamp mounting holes 12 for fixedly connecting with the EGR air inlet connection pipe bracket 2 after adjusting the mounting position, the number of the adjustable pipe clamp mounting holes 12 can be two, the pipe clamp rigidity is adjusted through the adjustable pipe clamp mounting holes 12 in the waist-shaped hole form, and the bending angle of the pipe clamp can be an acute angle to effectively increase the rigidity of the pipe clamp, so that the pipe clamp is prevented from being broken.
In the existing scheme, the engine generates large vibration in the operation process of a rack, and the vibration of an EGR (exhaust gas recirculation) air inlet connecting pipe clamp 1 and an EGR module combined bracket 4 cannot be reduced by the design of the existing EGR air inlet connecting pipe clamp 1 and the existing EGR module combined bracket 4, so that the engine catches fire due to cracking of pipelines, bolt fracture, bracket fracture and air inlet manifold fracture caused by vibration; the rubber of the pipe clamp with the rubber is not corrosion-resistant, is easy to age and fall off, and loses the damping effect as the temperature is reduced and becomes harder; the combined type support 4 of the EGR module is manufactured into a casting, so that the problems of high cost and difficult assembly exist.
In a specific embodiment, the EGR intake connection pipe 3 connects the EGR cooler and the EGR module 5 to introduce exhaust gas, and further includes an EGR module combination bracket 4 for fixing the EGR module 5 to the cylinder block 6, and the EGR module combination bracket 4 is used for fixing the EGR module 5 and its related casting so that the EGR module 5 is fixed to the EGR module combination bracket 4, thereby reducing vibration transmitted during the operation of the engine.
It should be emphasized that, the core improvement point of this embodiment lies in not only the vibration/noise reduction function of the EGR intake connection pipe clamp 1, but also the vibration damping function of the EGR module combined bracket 4, and through arranging the pipe clamp and the bracket reasonably in the intake system, through the fixation of the pipe clamp and the bracket, the vibration damping effect is effectively played when the engine vibrates, the resonance frequency of the engine is avoided, and the system components are effectively protected.
Illustratively, the combined bracket 4 of the EGR module adopts a split design, and specifically includes a first bracket 41 and a second bracket 42 which are fixedly assembled and installed, wherein the first bracket 41 and the second bracket 42 are respectively provided with a first adjustable bracket mounting hole 43 which is fixedly connected after the installation position is adjusted, the first bracket 41 is further provided with a second adjustable bracket mounting hole 44 which is fixedly connected after the installation position is adjusted with the EGR module 5, and the second bracket 42 is further provided with a third adjustable bracket mounting hole 45 which is fixedly connected after the installation position is adjusted with the cylinder 6; the hole axis of the second adjustable bracket mounting hole 44 of the first bracket 41 is designed to be in the vertical direction, the hole axis of the third adjustable bracket mounting hole 45 of the second bracket 42 is designed to be in the left-right direction, the first bracket 41 and the second bracket 42 are fixed through bolts, the rigidity of the combined bracket 4 of the EGR module can be effectively adjusted by controlling the torque of the bolts, the rigidity of the bracket can be indirectly changed to avoid the resonance frequency of an engine, and the assembly tolerance can be effectively controlled.
In the embodiment, the first bracket 41 is fixed on the EGR module 5 through the second adjustable bracket mounting hole 44 in the form of a kidney-shaped hole, and the assembly tolerance of the front and rear positions of the parts mounted on the engine is adjusted through the kidney-shaped hole, so that the mounting difficulty is effectively reduced; the second bracket 42 is fixed on the cylinder body 6 through a third adjustable bracket mounting hole 45 in a kidney-shaped hole form, and the assembly tolerance of the parts relative to the upper position and the lower position of the engine is effectively found through the upper kidney-shaped hole and the lower kidney-shaped hole; similarly, the first bracket 41 and the second bracket 42 are adjustably fixed.
It should be noted that, the adjustable mounting hole in this embodiment is specifically a kidney-shaped hole, and has the characteristic of being convenient to assemble. The vibration generated by the engine is effectively reduced through the unique kidney-shaped hole design, the assembly can be adjusted in the assembly process, and the problems that the traditional assembly is not easy to mount and cannot be assembled due to assembly tolerance are solved.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The air inlet pipeline system damping and noise reducing device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides an air inlet pipeline system vibration/noise reduction device, its characterized in that, it is fixed including EGR air inlet connection pipe clamp (1) and installation EGR air inlet connection pipe support (2) of EGR air inlet connection pipe clamp (1), EGR air inlet connection pipe clamp (1) is used for fixed EGR air inlet connection pipe (3) of suit, the periphery is equipped with shock attenuation parts in EGR air inlet connection pipe clamp (1).
2. The intake pipe system vibration/noise reduction device according to claim 1, wherein the vibration-damping means is a vibration-damping washer (11) for securely wrapping the EGR intake connection pipe (3).
3. Air intake pipe system vibration/noise damping device according to claim 2, characterized in that said shock-absorbing gasket (11) is in particular a steel wire shock-absorbing gasket.
4. The intake pipe system shock-absorbing and noise-reducing device according to claim 3, wherein said wire cushion ring is made by pressing at least two layers of wire mesh (112), and a plurality of mesh holes (111) are woven on each of said wire mesh (112).
5. The intake pipe system vibration/noise reduction device according to claim 4, wherein said wire mesh (112) is made of stainless steel, and said mesh openings (111) have a ∞ shape.
6. The intake pipe system shock-absorbing and noise-reducing device of claim 4, wherein the wire mesh (112) has a wire diameter of 0.4-0.6 mm, and the mesh (111) has a hole diameter of 0.7-0.8 mm.
7. Air intake pipe system vibration/noise reduction device according to any of claims 2 to 6, characterized in that the shock washer (11) has its ends projecting outwards.
8. The intake pipe system shock absorption and noise reduction device according to any one of claims 1 to 6, wherein the EGR intake connection pipe clamp (1) is provided with an adjustable pipe clamp mounting hole (12) for fixedly connecting with the EGR intake connection pipe bracket (2) after adjusting the mounting position.
9. The intake pipe system vibration/noise reduction device according to any one of claims 1 to 6, further comprising an EGR module sectional bracket (4) for fixing the EGR module (5) to the cylinder block (6).
10. The intake pipe system shock-absorbing and noise-reducing device according to claim 9, wherein the EGR module combined bracket (4) comprises a first bracket (41) and a second bracket (42) which are fixedly combined, the first bracket (41) and the second bracket (42) are both provided with a first adjustable bracket mounting hole (43) which is fixedly connected after the mounting position is adjusted, the first bracket (41) is further provided with a second adjustable bracket mounting hole (44) which is fixedly connected after the mounting position is adjusted with the EGR module (5), and the second bracket (42) is further provided with a third adjustable bracket mounting hole (45) which is fixedly connected after the mounting position is adjusted with the cylinder block (6).
CN202010630886.3A 2020-07-03 2020-07-03 Shock-absorbing and noise-reducing device for air inlet pipeline system Active CN111648883B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010630886.3A CN111648883B (en) 2020-07-03 2020-07-03 Shock-absorbing and noise-reducing device for air inlet pipeline system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010630886.3A CN111648883B (en) 2020-07-03 2020-07-03 Shock-absorbing and noise-reducing device for air inlet pipeline system

Publications (2)

Publication Number Publication Date
CN111648883A true CN111648883A (en) 2020-09-11
CN111648883B CN111648883B (en) 2024-06-25

Family

ID=72345732

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010630886.3A Active CN111648883B (en) 2020-07-03 2020-07-03 Shock-absorbing and noise-reducing device for air inlet pipeline system

Country Status (1)

Country Link
CN (1) CN111648883B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000008973A (en) * 1998-06-22 2000-01-11 Nissan Diesel Motor Co Ltd Exhaust gas recirculation system
KR20050022382A (en) * 2003-08-30 2005-03-08 현대자동차주식회사 Exhaust gas recirculation
CN202732078U (en) * 2012-08-01 2013-02-13 厦门金龙联合汽车工业有限公司 Soft cushion modifying device for passenger car exhaust system
CN103925120A (en) * 2014-05-07 2014-07-16 广西玉柴机器股份有限公司 EGR connection tube assembly of engine
CN203906126U (en) * 2014-05-07 2014-10-29 广西玉柴机器股份有限公司 Engine EGR (Exhaust Gas Recirculation) connecting pipe assembly
CN204572260U (en) * 2015-01-15 2015-08-19 东风朝阳朝柴动力有限公司 The combined type adjustable support of stationary engine pipeline
CN212615081U (en) * 2020-07-03 2021-02-26 安徽华菱汽车有限公司 Air inlet pipeline system vibration/noise reduction device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000008973A (en) * 1998-06-22 2000-01-11 Nissan Diesel Motor Co Ltd Exhaust gas recirculation system
KR20050022382A (en) * 2003-08-30 2005-03-08 현대자동차주식회사 Exhaust gas recirculation
CN202732078U (en) * 2012-08-01 2013-02-13 厦门金龙联合汽车工业有限公司 Soft cushion modifying device for passenger car exhaust system
CN103925120A (en) * 2014-05-07 2014-07-16 广西玉柴机器股份有限公司 EGR connection tube assembly of engine
CN203906126U (en) * 2014-05-07 2014-10-29 广西玉柴机器股份有限公司 Engine EGR (Exhaust Gas Recirculation) connecting pipe assembly
CN204572260U (en) * 2015-01-15 2015-08-19 东风朝阳朝柴动力有限公司 The combined type adjustable support of stationary engine pipeline
CN212615081U (en) * 2020-07-03 2021-02-26 安徽华菱汽车有限公司 Air inlet pipeline system vibration/noise reduction device

Also Published As

Publication number Publication date
CN111648883B (en) 2024-06-25

Similar Documents

Publication Publication Date Title
US9783956B2 (en) Bulldozer
JPS5863521A (en) Exhaust channel parts supporting device for internal-combustion engine vehicle
CN212615081U (en) Air inlet pipeline system vibration/noise reduction device
JP2003104071A (en) Muffler mounting structure in construction equipment
CN211118312U (en) Damping frame for mounting internal combustion engine generator set
CN201497127U (en) Motor connection structure and air conditioning system
CN208587453U (en) A kind of automobile air filter bracket vibration isolator and air filter of automobile mounting structure
CN111648883A (en) Air inlet pipeline system vibration/noise reduction device
CN204755049U (en) Leading motor muffler fixing device
CN205553905U (en) Exhaust of vehicle pipe fixing device and vehicle
CN216554266U (en) Vibration damper and compressor support frame
JP2006070712A (en) Exhaust system of automobile
CN210565099U (en) Compressor and air conditioner
CN219932298U (en) Exhaust muffler assembly of motorcycle and tricycle
CN204236225U (en) A kind of automotive muffler damping mount part
CN105569873A (en) After-treatment system for tail gas heating
CN111799931A (en) Shock attenuation diesel generator
CN206679157U (en) A kind of mounting bracket of light motorcycle electrodeless variable-speed engine
KR20080018484A (en) Rear roll mount assembly
CN110410190A (en) A kind of diesel engine catalytic muffler integrated form mounting bracket and its installation method
CN105464777B (en) Automotive muffler mounting structure
CN204552908U (en) A kind of plural serial stage tandem type silencing apparatus
CN219427934U (en) Hanging device of exhaust system and vehicle
CN111648849B (en) Fixing device for automobile exhaust pipe
CN221032824U (en) Methanol engine tail pipe assembly, tail gas exhaust system and mining wide body vehicle

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant