CN101832161B - Actively-controlled exhaust muffler of autonomously-inverting internal-combustion engine - Google Patents
Actively-controlled exhaust muffler of autonomously-inverting internal-combustion engine Download PDFInfo
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- CN101832161B CN101832161B CN2010101353996A CN201010135399A CN101832161B CN 101832161 B CN101832161 B CN 101832161B CN 2010101353996 A CN2010101353996 A CN 2010101353996A CN 201010135399 A CN201010135399 A CN 201010135399A CN 101832161 B CN101832161 B CN 101832161B
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- exhaust
- combustion engine
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- jet exhaust
- muffling
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Abstract
The invention discloses an actively-controlled exhaust muffler of an autonomously-inverting internal-combustion engine, which belongs to the field of machines, is used for muffling and exhausting an internal-combustion engine and solves the problems that the traditional active muffler structure is complicated so as to barrier the actual use and the like. The actively-controlled exhaust muffler consists of an actively-controlled muffling pipeline loop and a jet exhaust moving mechanism, wherein the muffling pipeline loop comprises a joint, an air cylinder exhaust guide pipe, two branch air delivery pipes connected to the guide pipe, telescopic pipes connected to the branch air delivery pipes, exhaust nozzle seats connected to the telescopic pipes and a nozzle seat moving slidaway. The exhaust nozzle moving mechanism comprises a chain wheel, chains which are arranged on the chain wheel and connected with the nozzle seats, a drive motor, an internal combustion engine revolution sensor and a micro controller. The invention has the benefits of intervening for muffling at an exhaust outlet by using self-inverting acoustic wave of noise and raw noise acoustic wave and having simple structure, low power consumption and reliable operation in comparison with the traditional muffling technical scheme.
Description
Technical field
The invention belongs to mechanical field, be specifically related to a kind of noise anti-phase sound wave of oneself and former noise sound wave of utilizing and be in the exhaust silencer for internal-combustion engine that relates to noise elimination at exhaust outlet,
Background technique
At present, known exhaust silencer for internal-combustion engine has two types: passive silencing apparatus and active silencer.Passive silencing apparatus is divided into dissipative muffler, reactive muffler and impedance complex formula silencing apparatus again.In general, the advantage of passive silencing apparatus is that anechoic frequency bandwidth, sound deadening capacity are big, need not control, thereby application and extensive, but its shortcoming is also fairly obvious, is to reach the target sound deadening capacity, have to adopt interpolation pipeline mazy type to be arranged, exhaust resistance is big, causes I. C. engine exhaust back pressure height, and power loss is big.Document " experimental research of automobile exhaust noise adaptive active control " (Qiao Xiujuan, Wu Weiwei, Huang Qibai. Wuhan Auto Industry University's journal, 1997,19 (1): 1-4) enumerated the power loss of 7 kinds of passive noise elimination bafflers of China, minimum is 5%, and the highest is 14%.Active silencer is a kind of silencing apparatus of present academia broad research, control mode is a lot, the control principle of using also is not quite similar, but the basic principle of its main type is the secondary noise of introducing in exhaust silencer system with internal combustion engine exhaust noise same frequency, same intensity, antiphase, following former noise in real time by frequency, intensity, the phase place of ACTIVE CONTROL secondary noise changes, realize at the exhaust outlet place two row with frequently, etc. the interference of strong, anti-phase sound wave, reach the purpose of subduing internal combustion engine exhaust noise.Existing achievement in research shows, the advantage of active control is that exhaust resistance is little, thereby the I. C. engine exhaust back pressure is low, power loss is little, shortcoming is that the required electric power consumption of introducing secondary noise sound wave is big, for example want to offset fully broadband exhaust sound energy up to 130dB (A), loudspeaker (the Krause P that needs the about 8kW of theoretical radiation sound output, Weltens H.Advanced Design of Automotive ExhaustSilencer Systems.SAE Paper 922088,1992), complex structure, involving great expense (needs speed probe, pressure transducer, acoustic sensor), and aspect self adaptive control, components and parts prepare the aspect and also have numerous technical barriers not solve, and enter practical state far away.
Summary of the invention
The exhaust muffler of autonomously-inverting internal-combustion engine that the purpose of this invention is to provide a kind of active control, be used for the internal combustion engine noise elimination exhaust, it is big and the active silencer electric power consumption is big to overcome existing passive silencing apparatus power loss, the obstruction of active silencer complex structure and existence enters the problems of actual use
Silencing apparatus of the present invention is made up of the jet exhaust mobile mechanism on loop, anti-phase hush tube road and pipeline loop, noise elimination pipeline loop wherein comprises: the joint that is connected with ternary catalyzing unit, the inblock cylinder gas ingress pipe that links to each other with joint, be connected two branch's pneumatic tubes of ingress pipe output terminal, straight line is connected two sections relative bellows that two branch's pneumatic tubes export in opposite directions, is connected the jet exhaust seat that has jet exhaust on two sections telescopic pipe opposite ends, is connected two mobile slideways of jet exhaust seat on branch's pneumatic tube in the bellows.Jet exhaust mobile mechanism comprises and is separately fixed at two supporting wheel and drive sprockets on branch's pneumatic tube, be installed on the sprocket wheel and and save chain, the drive sprocket drive motor that connects the jet exhaust seat with connecting, be installed in the tachometer generator on the internal-combustion engine, connect the microcontroller of sensor and drive motor.
Working procedure of the present invention is: behind the gas and noise process ingress pipe by the motor discharge, be branched pneumatic tube and be divided into two-way, discharge gases and noise from two branch pneumatic tubes outlets, enter telescopic pipe by two ends respectively again and the ejection that crosses at mobile jet exhaust place.Engine sensor detection of engine rotating speed, and transmission information is in real time given microcontroller, send control command after the microcontroller processes sensor detection information, indication control motor drives mobile jet exhaust by gear, sprocket wheel, chain and moves, make in the two sections center-aisles in loop, anti-phase hush tube road noise from entering the mouth to interruption-forming half-wavelength wave path-difference, form the interference sound wave of two row same frequencys, antiphase in the outlet port, eliminate the noise by mutual anti-phase interference.
The present invention carries good effect: can utilize noise anti-phase sound wave of oneself and former noise sound wave to interfere at the exhaust outlet place and eliminate the noise, compare with passive silencing apparatus, exhaust resistance is little, improves working efficiency of internal combustion engine, saves the energy.Compare with existing active control noise elimination technique, simple in structure, power consumption is low, reliable.
Description of drawings
Fig. 1 is that the active control of the present invention is from anti-phase exhaust silencer overall structure sketch.
Fig. 2 is the sectional view of exhaust ports of the present invention.
Embodiment
Consult Fig. 1, Fig. 2, silencing pipeline loop among the present invention comprises the joint 1 that is connected with ternary catalyzing unit, link to each other with joint inblock cylinder gas ingress pipe 2, be connected ingress pipe 2 output terminals, relative two branch's pneumatic tubes 3 and 4 of separating of the horizontal straight line of ingress pipe, straight line is connected after branch's pneumatic tube 3 and 4 bendings two sections bellows 5 in opposite directions the outlet.Two sections bellows opposite ends connect jet exhaust seat 6, have in the jet exhaust seat 6 axially and threeway inner chamber radially, radially cavity connects the jet exhaust 7 that one section evagination pipeline forms, jet exhaust seat slideway 8 is the channel-shaped bar of rectangular cross-section one side opening, slideway 8 slit openings and spout are equidirectional, slideway 8 two ends are connected in the outlet of two branch's pneumatic tubes 3 and 4, and the outlet of the port respective branches pneumatic tube at flute profile slide groove two ends.
Consult Fig. 1, jet exhaust mobile mechanism comprises and is separately fixed at two supporting wheel 9 and drive sprockets 10 on the branch row tracheae, be installed on the sprocket wheel and use and connect chain 12, the drive sprocket drive motor 13 that joint 11 connects the relief opening seats, be installed in the tachometer generator 14 on the internal-combustion engine, connect the microcontroller 15 of sensor 14 and drive motor 13.
Claims (1)
1. the exhaust muffler of autonomously-inverting internal-combustion engine of an active control, it is characterized in that: with engine sensor detection of engine rotating speed, and transmission information is in real time given microcontroller, send control command after the microcontroller processes sensor detection information, indication control motor passes through gear, sprocket wheel, chain drives mobile jet exhaust and moves, make in the two sections center-aisles in loop, anti-phase hush tube road noise from entering the mouth to interruption-forming half-wavelength wave path-difference, form two row same frequencys in the outlet port, the interference sound wave of antiphase constitutes exhaust muffler of autonomously-inverting internal-combustion engine by mutual anti-phase interference noise elimination; Form by the jet exhaust mobile mechanism on loop, anti-phase hush tube road and pipeline loop, noise elimination pipeline loop wherein comprises: the joint that is connected with ternary catalyzing unit, the inblock cylinder gas ingress pipe that links to each other with joint, be connected two branch's pneumatic tubes of ingress pipe output terminal, straight line is connected two sections relative bellows that two branch's pneumatic tubes export in opposite directions, is connected the jet exhaust seat that has jet exhaust on two sections telescopic pipe opposite ends, is connected two mobile slideways of jet exhaust seat on branch's pneumatic tube in the bellows; Jet exhaust mobile mechanism comprises and is separately fixed at two supporting wheel and drive sprockets on branch's pneumatic tube, be installed on the sprocket wheel and and save chain, the drive sprocket drive motor that connects the jet exhaust seat with connecting, be installed in the tachometer generator on the internal-combustion engine, connect the microcontroller of sensor and drive motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101353996A CN101832161B (en) | 2010-03-30 | 2010-03-30 | Actively-controlled exhaust muffler of autonomously-inverting internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101353996A CN101832161B (en) | 2010-03-30 | 2010-03-30 | Actively-controlled exhaust muffler of autonomously-inverting internal-combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101832161A CN101832161A (en) | 2010-09-15 |
| CN101832161B true CN101832161B (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101353996A Expired - Fee Related CN101832161B (en) | 2010-03-30 | 2010-03-30 | Actively-controlled exhaust muffler of autonomously-inverting internal-combustion engine |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109882265A (en) * | 2019-04-08 | 2019-06-14 | 海城市石油机械制造有限公司 | A kind of oil-well rig cluster engine noise attenuation, cancellation element and its application method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2428575Y (en) * | 2000-06-16 | 2001-05-02 | 阮瑞平 | Exhausting silencer |
| CN101165320B (en) * | 2006-10-18 | 2010-09-01 | 方建升 | Grating type harmonic wave sound absorber |
| CN201367932Y (en) * | 2008-12-17 | 2009-12-23 | 奇瑞汽车股份有限公司 | Novel exhaust muffler |
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2010
- 2010-03-30 CN CN2010101353996A patent/CN101832161B/en not_active Expired - Fee Related
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| CN101832161A (en) | 2010-09-15 |
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Granted publication date: 20111228 Termination date: 20130330 |