CN105971705A - Muffler for internal combustion engine of heavy truck - Google Patents
Muffler for internal combustion engine of heavy truck Download PDFInfo
- Publication number
- CN105971705A CN105971705A CN201610580638.6A CN201610580638A CN105971705A CN 105971705 A CN105971705 A CN 105971705A CN 201610580638 A CN201610580638 A CN 201610580638A CN 105971705 A CN105971705 A CN 105971705A
- Authority
- CN
- China
- Prior art keywords
- inner tube
- porous inner
- porous
- noise reduction
- heavy truck
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/007—Apparatus used as intake or exhaust silencer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
- F01N1/04—Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a muffler for an internal combustion engine of a heavy truck. The two ends of a muffling cylinder are each provided with an end cover, three partition plates are arranged in the muffling cylinder, the partition plates divide an inner cavity of the muffling cylinder into a first expansion chamber, a first resonant chamber, a second resonant chamber and a second expansion chamber from left to right, the first resonant chamber and the second resonant chamber are each internally provided with first noise absorption glass fibers, the muffling cylinder is internally provided with a first porous inner tube, a second porous inner tube and a third porous inner tube which are each provided with multiple small holes, the three porous inner tubes all penetrate through the three partition plates, the left end of the first porous inner tube extends out of the end cover on the left side, the right end of the first porous inner tube is located inside the second expansion chamber, the left end and the right end of the second porous inner tube are located inside the first expansion chamber and the second expansion chamber respectively, the left end of the third porous inner tube is located inside the first expansion chamber, the right end of the third porous inner tube extends out of the end cover on the right side, and the right end of the third porous inner tube is provided with a connecting sleeve. The muffler for the internal combustion engine of the heavy truck is exclusively used for one heavy truck, an impedance composite structure is adopted, and the muffler can have an effect of reducing noises with low, medium and high frequencies.
Description
Technical field
The present invention relates to heavy truck internal combustion engine noise reduction technical field, particularly relate to a kind of heavy truck muffler for internal combustion engine.
Background technology
Along with country's raising day by day to the automobile noise control, people's lifting day by day to quality of the life, automobile is also more and more higher to the requirement of exhaust noise.
And deafener is the effective means of the automobile noise control, the deafener of excellent performance can effectively reduce the exhaust noise of automobile.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of heavy truck muffler for internal combustion engine.
The present invention is achieved by the following technical solutions:
A kind of heavy truck muffler for internal combustion engine, include noise reduction cylinder, it is respectively arranged at two ends with end cap at noise reduction cylinder, it is provided with three dividing plates in noise reduction inner barrel, hush pipe intracoelomic cavity is from left to right divided into expansion chambers one by three dividing plates, resonant chamber one, resonant chamber two and expansion chambers two, it is equipped with sound-absorbing glass fibre one in resonant chamber one and resonant chamber two, it is additionally provided with porous inner tube one in noise reduction inner barrel, porous inner tube two and porous inner tube three, multiple aperture is all had on three porous inner tubes, three porous inner tubes both pass through three dividing plates, the left end of porous inner tube one stretches out left side end cap, it is internal that right-hand member is positioned at expansion chambers two, the left and right end of porous inner tube two lays respectively at expansion chambers one and expansion chambers two is internal, the left end of porous inner tube three is positioned at expansion chambers one
Portion, right-hand member stretches out right side end cap, and right-hand member end is provided with connection sleeve pipe.
Inside the end cap at noise reduction cylinder two ends, also it is sequentially provided with sound-absorbing glass fibre two and porous barrier, porous barrier has multiple aperture.
Described noise reduction cylinder, dividing plate and porous barrier is ellipse.
The invention have the advantage that the present invention is exclusively used in a heavy truck, use impedance complex formula structure, reducing effect can be played for the low each frequency noise of middle height.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is cut-away view of the present invention.
Fig. 3 is porous barrier structure chart.
Fig. 4 is diaphragm structure figure.
Detailed description of the invention
nullSuch as Fig. 1、2、3、Shown in 4，A kind of heavy truck muffler for internal combustion engine，Include noise reduction cylinder 1，It is respectively arranged at two ends with end cap 2 at noise reduction cylinder 1，Three dividing plates 3 it are provided with inside noise reduction cylinder 1，Noise reduction cylinder 1 inner chamber is from left to right divided into expansion chambers 1 by three dividing plates 3、Resonant chamber 1、Resonant chamber 26 and expansion chambers 27，It is equipped with sound-absorbing glass fibre 1 in resonant chamber 1 and resonant chamber 26，In hush pipe body, 1 is additionally provided with porous inner tube 1、Porous inner tube 2 10 and porous inner tube 3 11，Multiple aperture is all had on three porous inner tubes，Three porous inner tubes both pass through three dividing plates 3，The left end of porous inner tube 1 stretches out left side end cap 2，It is internal that right-hand member is positioned at expansion chambers 27，The left and right end of porous inner tube 2 10 lays respectively at expansion chambers 1 and expansion chambers 27 is internal，It is internal that the left end of porous inner tube 3 11 is positioned at expansion chambers 1，Right-hand member stretches out right side end cap 2，And right-hand member end is provided with connection sleeve pipe 12.
Inside the end cap 2 at noise reduction cylinder 1 two ends, also it is sequentially provided with sound-absorbing glass fibre 2 13 and porous barrier 14, porous barrier 13 has multiple aperture.
Described noise reduction cylinder 1, dividing plate 3 and porous barrier 13 is ellipse.Do the biggest volume simultaneously ensureing, reduce and take up room, increase the car load road clearance.
First, engine exhaust gas enters from porous inner tube 3 11 and dilates room 1, is then dilated suddenly a bigger chamber by original pipeline, acoustic impedance in passage can be undergone mutation, the sound wave making some frequency can't pass acoustic filter, and is reflected back sound source, thus effectively reduces low-frequency noise；
And during flowing through porous inner tube 3 11, due to the aperture that gathers on porous inner tube 3 11, understand some air-flow and can enter resonant chamber 1 and resonant chamber 26 generation vibrations by aperture, and when airstream vibration, by aperture, make the gas in closing chamber also cause vibration, gas (gas column) in aperture vibrates the most simultaneously, and when the frequency of vibration in air-flow is identical with the natural frequency closing chamber, resonates, thus reduce noise；
Simultaneously because resonant chamber 1 and resonant chamber 26 are filled with substantial amounts of glass fibre, the acoustic energy of sound wave can be converted into frictional heat energy because of friction, thus reduces medium, high frequency noise during air-flow enters glass fibre by aperture.
Then, air-flow enters expansion chambers 27 from porous inner tube 2 10, acoustic reactance sudden change occurs again, reduces a part of noise；The most also can enter resonant chamber 1 and resonant chamber 26 by the aperture gathered on porous inner tube 2 10 by some air-flow, airstream vibration and friction occur, reduces noise；
Finally, air-flow gets rid of deafener cylinder 1 by porous inner tube 1, the most also can be entered resonant chamber 1 and resonant chamber 26 by the aperture on porous inner tube 1, airstream vibration and friction occur, reduce noise；
And, it is filled with glass fibre at deafener two ends respectively, not only can play friction sound energy consumption, play noise reduction, and can effectively reduce noise and spread out of by deafener two ends, play good insulating effect.
The combustion-gas flow that internal combustion engine flows out is through four chambers of deafener, twice expansion suddenlys change, three vibrations, the multiple denoising structure of three frictions and step, significantly reduce the noise of basic, normal, high each frequency range in engine exhaust gas discharge process, playing good noise reduction, the reduction for car load noise has played important function.
Claims (3)
1. a heavy truck muffler for internal combustion engine, it is characterized in that: include noise reduction cylinder, it is respectively arranged at two ends with end cap at noise reduction cylinder, it is provided with three dividing plates in noise reduction inner barrel, hush pipe intracoelomic cavity is from left to right divided into expansion chambers one by three dividing plates, resonant chamber one, resonant chamber two and expansion chambers two, it is equipped with sound-absorbing glass fibre one in resonant chamber one and resonant chamber two, it is additionally provided with porous inner tube one in noise reduction inner barrel, porous inner tube two and porous inner tube three, multiple aperture is all had on three porous inner tubes, three porous inner tubes both pass through three dividing plates, the left end of porous inner tube one stretches out left side end cap, it is internal that right-hand member is positioned at expansion chambers two, the left and right end of porous inner tube two lays respectively at expansion chambers one and expansion chambers two is internal, the left end of porous inner tube three is positioned at expansion chambers one
Portion, right-hand member stretches out right side end cap, and right-hand member end is provided with connection sleeve pipe.
A kind of heavy truck muffler for internal combustion engine the most according to claim 1, it is characterised in that: inside the end cap at noise reduction cylinder two ends, also it is sequentially provided with sound-absorbing glass fibre two and porous barrier, porous barrier has multiple aperture.
A kind of heavy truck muffler for internal combustion engine the most according to claim 2, it is characterised in that: described noise reduction cylinder, dividing plate and porous barrier is ellipse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610580638.6A CN105971705A (en) | 2016-07-22 | 2016-07-22 | Muffler for internal combustion engine of heavy truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610580638.6A CN105971705A (en) | 2016-07-22 | 2016-07-22 | Muffler for internal combustion engine of heavy truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105971705A true CN105971705A (en) | 2016-09-28 |
Family
ID=56951930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610580638.6A Pending CN105971705A (en) | 2016-07-22 | 2016-07-22 | Muffler for internal combustion engine of heavy truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105971705A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956561A (en) * | 2017-11-16 | 2018-04-24 | 南通理工学院 | Exhaust silencer for internal combustion engine of vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201377347Y (en) * | 2009-01-24 | 2010-01-06 | 哈尔滨艾瑞汽车排气系统有限公司 | Multi-cavity labyrinth dissipation type silencer |
| CN203584518U (en) * | 2013-12-12 | 2014-05-07 | 集瑞联合重工有限公司 | Light-weight muffler for heavy truck |
| CN203925703U (en) * | 2014-06-05 | 2014-11-05 | 吴章劲 | A kind of baffler that is provided with drainage channel |
| CN204783176U (en) * | 2015-06-30 | 2015-11-18 | 合肥汇凌汽车零部件有限公司 | Light truck muffler |
| CN205805668U (en) * | 2016-07-22 | 2016-12-14 | 合肥汇凌汽车零部件有限公司 | A kind of heavy truck muffler for internal combustion engine |
-
2016
- 2016-07-22 CN CN201610580638.6A patent/CN105971705A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201377347Y (en) * | 2009-01-24 | 2010-01-06 | 哈尔滨艾瑞汽车排气系统有限公司 | Multi-cavity labyrinth dissipation type silencer |
| CN203584518U (en) * | 2013-12-12 | 2014-05-07 | 集瑞联合重工有限公司 | Light-weight muffler for heavy truck |
| CN203925703U (en) * | 2014-06-05 | 2014-11-05 | 吴章劲 | A kind of baffler that is provided with drainage channel |
| CN204783176U (en) * | 2015-06-30 | 2015-11-18 | 合肥汇凌汽车零部件有限公司 | Light truck muffler |
| CN205805668U (en) * | 2016-07-22 | 2016-12-14 | 合肥汇凌汽车零部件有限公司 | A kind of heavy truck muffler for internal combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956561A (en) * | 2017-11-16 | 2018-04-24 | 南通理工学院 | Exhaust silencer for internal combustion engine of vehicle |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |