CN108729982B - Comprehensive test cooling system for vehicle noise elimination - Google Patents
Comprehensive test cooling system for vehicle noise elimination Download PDFInfo
- Publication number
- CN108729982B CN108729982B CN201810165623.2A CN201810165623A CN108729982B CN 108729982 B CN108729982 B CN 108729982B CN 201810165623 A CN201810165623 A CN 201810165623A CN 108729982 B CN108729982 B CN 108729982B
- Authority
- CN
- China
- Prior art keywords
- pipe
- chamber
- transistor
- processor
- signal receiving
- 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.)
- Active
Links
Images
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
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
-
- 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
- F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
- F01N1/065—Silencing apparatus characterised by method of silencing by using interference effect by using an active noise source, e.g. speakers
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
- F01N3/043—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids without contact between liquid and exhaust gases
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 provides a comprehensive test cooling system for vehicle noise elimination, which comprises a processor overheating signal receiving end connected with an overheating protection circuit signal output end, a processor display signal sending end connected with a display unit signal receiving end, a processor temperature signal receiving end connected with an analog-to-digital conversion circuit signal sending end, an analog-to-digital conversion circuit signal receiving end connected with a temperature sensor signal sending end, an under-voltage protection circuit signal sending end connected with a processor voltage signal receiving end, an overcurrent protection circuit signal sending end connected with a processor circuit signal receiving end, a processor motor working signal end connected with an isolation driving circuit signal receiving end, and a circulating water pipe is monitored in real time through a corresponding protection circuit, so that a water pump is ensured to run stably, and the service life of a circulating refrigeration system is prolonged.
Description
Technical Field
The invention relates to a silencer, in particular to a comprehensive test cooling system for silencing a vehicle.
Background
The automobile silencer is a common component of an automobile, and is beneficial to reducing noise pollution in the driving process of the automobile. The back silencer on the car has intake pipe, barrel and the blast pipe that sets gradually backward in the past, and the barrel of back silencer generally comprises two front and back cavities, and the preceding terminal surface of barrel is from the preceding conical surface that diminishes that gradually backward forward, and the rear end face of barrel is the conical surface that diminishes gradually backward in the past, and both ends receive the compression around the barrel like this, have reduced the volume of two cavities, and then can influence the noise reduction of silencer. Meanwhile, the existing silencer has no structure for completely carrying out silencing treatment on the 80HZ wave frequency section, and the wave frequency section near the 80HZ is just the main noise concentration point of the whole car, so that the car still has larger noise after the noise of the car is reduced by the silencer. However, the sound in the muffler pipe cannot be accurately offset and attenuated, and the muffler is accelerated to be aged due to the overheated exhaust gas, which requires a person skilled in the art to solve the corresponding technical problems.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the technical problem to be solved by the present invention is to provide a comprehensive test cooling system for vehicle sound attenuation.
The technical scheme of the invention is as follows: the utility model provides a comprehensive test cooling system for vehicle noise elimination, includes intake pipe, barrel and the blast pipe that sets gradually backward from the past, the front end of barrel is sealed by the protecgulum, and the rear end is sealed by the back lid, characterized by: the inner part of the cylinder body is divided into three chambers by a front partition plate and a rear partition plate, the three chambers are a first chamber, a second chamber and a third chamber from front to back in sequence, the volume of the first chamber is basically equal to that of the second chamber, the volume of the third chamber is 3-4 times of that of the first chamber, and a circle of silencing material is arranged on the inner annular wall of the first chamber; the rear end of the air inlet pipe penetrates through the front cover and the front partition plate from front to back and extends into the second cavity, the rear end part of the air inlet pipe is close to the rear partition plate, and the pipe bodies of the air inlet pipe, which are positioned in the first cavity and the second cavity, are provided with circulation meshes; the front end of the exhaust pipe penetrates through the rear cover and the rear partition plate from back to front and extends into the second chamber, the front end part of the exhaust pipe is close to the front partition plate, and a pipe body of the exhaust pipe, which is positioned in the second chamber, is provided with a circulation mesh; a through pipe is arranged at the upper part of the rear clapboard in a penetrating way, the front port of the through pipe extends into the second cavity, the front port of the through pipe is positioned between the rear end part of the air inlet pipe and the front end part of the exhaust pipe, the rear port of the through pipe extends into the third cavity, a first standing wave pipe is arranged at the inner side of the air inlet pipe, a second standing wave pipe is arranged at the inner side of the through pipe, a third standing wave pipe is arranged at the inner side of the exhaust pipe, a first vibrator and a second vibrator are respectively arranged at opposite positions at the inner side of the third cavity, a first standing wave pipe signal sending end is connected with a first signal receiving end of a first processor, a second standing wave pipe signal sending end is connected with a second signal receiving end of the first processor, a third standing wave pipe signal sending end is connected with a third signal receiving end of the first processor, a first vibrator signal receiving end is connected with a first signal sending end of a vibration driving circuit, the signal receiving end of the second vibrator is connected with the signal sending end of the second vibration driving circuit, and the signal receiving end of the second vibration driving circuit is connected with the second vibration signal sending end of the first processor;
the double-layer radiating fins are arranged on one side of the barrel, the circulating water pipe is arranged at the interlayer of the radiating fins and is in an S-shaped layout, the air guide pipe is arranged on the other side of the barrel and is in an arched shape, the temperature sensor is arranged in the barrel to monitor the temperature of the barrel, and the circulating water pump is arranged on one side of the circulating water pipe;
the second processor overheating signal receiving end is connected with the signal output end of the overheating protection circuit, the second processor display signal sending end is connected with the signal receiving end of the display unit, the second processor temperature signal receiving end is connected with the signal sending end of the analog-to-digital conversion circuit, the signal receiving end of the analog-to-digital conversion circuit is connected with the signal sending end of the temperature sensor, the under-voltage protection circuit signal sending end is connected with the second processor voltage signal receiving end, the overcurrent protection circuit signal sending end is connected with the second processor circuit signal receiving end, the second processor motor working signal end is connected with the isolation driving circuit signal receiving end, the isolation driving circuit signal sending end is respectively connected with the base of the fifth transistor and the base of the eighth transistor, the isolation driving circuit signal sending end is respectively connected with the base of the sixth transistor and the base of the ninth transistor, and the isolation driving circuit signal sending, an emitter of a fifth transistor is respectively connected with a collector of the eighth transistor and a first end of the circulating water pump, an emitter of a sixth transistor is respectively connected with a collector of the ninth transistor and a second end of the circulating water pump, an emitter of a seventh transistor is respectively connected with a collector of the tenth transistor and a third end of the circulating water pump, a collector of the fifth transistor, a collector of the sixth transistor and a collector of the seventh transistor are connected with a positive end of a rectifying circuit, an emitter of the eighth transistor, an emitter of the ninth transistor and an emitter of the tenth transistor are connected with a negative end of the rectifying circuit, and the rectifying circuit.
The cylinder of the silencer is divided into three chambers by the front partition plate and the rear partition plate, the volume of the third chamber is larger than that of the first chamber and that of the second chamber, the rear part of the air inlet pipe is respectively positioned in the first chamber and the second chamber, and the front part of the exhaust pipe is respectively positioned in the second chamber and the third chamber. Meanwhile, the pipe body of the air inlet pipe in the first chamber is provided with meshes, so that part of sound waves in the air inlet pipe can enter the first chamber, and the sound is eliminated once by the sound elimination material on the inner wall.
Because the mesh holes are formed in the pipe body of the second cavity of the air inlet pipe and the pipe body of the air outlet pipe, air and sound waves can be discharged into the second cavity through the air inlet pipe and then discharged through the air outlet pipe after the air and the sound waves circulate in the second cavity, so that the air is high in mobility in the second cavity and high in noise. After the upper portion of back baffle wears to establish siphunculus intercommunication second cavity and third cavity, the sound wave that produces in the third cavity just can spread into the second cavity from the siphunculus into, because the vibrations sound wave frequency that produces in the third cavity is the same with the frequency that the car shakes, so, this vibrations sound wave forms the friction interference cancellation with the sound wave in the second cavity in the front nozzle department of siphunculus, turn into heat energy with the kinetic energy of vibrations sound wave, thereby greatly reduced the noise in the second cavity, improved the noise cancelling effect of silencer greatly.
In order to increase the volume of the third chamber as much as possible, the third chamber generates stronger sound-eliminating waves with the same frequency, the sound-eliminating effect is improved, and the functions of the first chamber and the second chamber and the overall length of the silencer are ensured to be unchanged, wherein the lengths of the first chamber and the second chamber are both 88mm, and the length of the third chamber is 300 mm.
Because the vibration frequency section of the whole car is mainly concentrated near 80HZ, in order to enable sound waves of the 80HZ frequency section formed in the third chamber to pass through the through pipe and enable the front port of the through pipe and the vibration sound waves in the second chamber to form a cancellation condition, the lengths of the through pipe extending into the second chamber and the third chamber are both 40-50mm, and the pipe diameter of the through pipe is 25-30 mm.
Preferably, the lengths of the through pipes extending into the second chamber and the third chamber are both 45mm, and the pipe diameters of the through pipes are 28 mm.
Under the condition of keeping the length of the silencer unchanged, the traditional frustum-shaped front cover and the traditional frustum-shaped rear cover are changed into the circular flat-plate-shaped front cover and the circular flat-plate-shaped rear cover, so that the volume of the whole silencer is increased by 20-30%, namely the silencing effect of the silencer is greatly improved.
The invention has the following beneficial effects:
1) the barrel of the silencer is divided into three chambers, the through pipe is arranged on the rear partition board in a penetrating mode, vibration sound waves generated in the chamber close to the rear portion are in friction interference cancellation with sound waves in the middle chamber at the front pipe orifice of the through pipe, noise in the silencer is greatly reduced, and the silencing effect of the silencer is greatly improved.
2) Under the condition of keeping the length of the silencer unchanged, the frustum-shaped front end panel and the frustum-shaped rear end panel are changed into the circular flat-plate-shaped front cover and the circular flat-plate-shaped rear cover, so that the volume of the whole silencer is increased by about 25 percent, namely the silencing effect of the silencer is greatly improved.
3) The vibration is carried out by controlling the vibrator, so that the noise in the silencer is interfered with the wave band generated by the vibration, the silencing effect is achieved, and the silencer is cooled by the circulating water pump, so that the long-time durable work of the silencer is ensured.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of FIG. 1;
FIG. 3 is a schematic circuit diagram of the present invention;
FIG. 4 is a schematic circuit diagram of the present invention;
FIG. 5 is a circuit diagram of the present invention.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1 and 2, the present invention is composed of an intake pipe 1, a cylinder 2, an exhaust pipe 3, a first chamber 4, a second chamber 5, a third chamber 6, a through pipe 7, a front cover 8, a rear cover 9, a front partition plate 10, a rear partition plate 11, etc. Wherein, barrel 2 is circular straight section of thick bamboo structure, and the front end of this barrel 2 is sealed by protecgulum 8, and the rear end is sealed by back lid 9, and protecgulum 8 and back lid 9 are all preferred circular flat board to adopt the welding to fix with barrel 2. The interior of the cylinder body 2 is divided into three chambers by a front partition plate 10 and a rear partition plate 11, the three chambers are a first chamber 4, a second chamber 5 and a third chamber 6 from front to back in sequence, the volume of the first chamber 4 is basically equal to that of the second chamber 5, the volume of the third chamber 6 is 3-4 times that of the first chamber 4, and a circle of silencing material 12 is arranged on the inner annular wall of the first chamber 4. In this embodiment, the first chamber 4 and the second chamber 5 are both 88mm in length, and the third chamber 6 is 300mm in length.
As shown in fig. 1 and 2, an air inlet pipe 1 penetrates through the front end of a cylinder 2, the rear section of the air inlet pipe 1 is a straight pipe, the rear end of the air inlet pipe 1 horizontally penetrates through a front cover 8 and a front partition plate 10 from front to back and extends into a second chamber 5, the rear end of the air inlet pipe 1 is sealed, the rear end of the air inlet pipe 1 is close to a rear partition plate 11, and the axis of the rear section of the air inlet pipe 1 is parallel to and close to the axis of the cylinder 2. The intake pipe 1 all opens the circulation mesh on being located the pipe shaft of first cavity 4 and second cavity 5, and this circulation mesh encircles the pipe shaft and distributes, and the size of circulation mesh is confirmed according to actual need. Exhaust pipe 3 is worn to be equipped with at the rear end of barrel 2, and the anterior segment of exhaust pipe 3 is the straight tube, and the front end of exhaust pipe 3 is by back to preceding level pass back lid 9 and back baffle 11, stretches into second cavity 5, and the preceding port of exhaust pipe 3 is sealed, and the preceding tip of exhaust pipe 3 is close to preceding baffle 10 to the anterior segment of exhaust pipe 3 is located the below of intake pipe 1 back end. The exhaust pipe 3 is provided with a pipe body in the second chamber 5 with flow-through meshes which are distributed around the pipe body. The double-layer cooling fin 17 is arranged on one side of the cylinder 2, the circulating water pipe 16 is arranged at the interlayer of the cooling fin, the circulating water pipe is in an S-shaped layout, the air guide pipe 20 is arranged on the other side of the cylinder 2, the air guide pipe 20 is in an arch shape, the temperature sensor is arranged in the cylinder to monitor the temperature of the cylinder, and the circulating water pump is arranged on one side of the circulating water pipe 16;
as shown in fig. 1 and 2, a through pipe 7 is provided at the upper part of the rear partition 11, the through pipe 7 is a circular straight pipe, and the axis of the through pipe 7 is parallel to the axis of the cylinder 2. The pipe diameter of the through pipe 7 is 25-30mm, preferably, the pipe diameter of the through pipe 7 is 28 mm. The front port of the duct 7 extends into the second chamber 5, the front port of the duct 7 being located between the rear end of the inlet pipe 1 and the front end of the outlet pipe 3, and the rear port of the duct 7 extending into the third chamber 6. The lengths of the through pipe 7 extending into the second chamber 5 and the third chamber 6 are 40-50mm, and preferably, the lengths of the through pipe 7 extending into the second chamber 5 and the third chamber 6 are 45 mm.
As in the interference type muffler structure of fig. 1, noise can be eliminated by this structure. When the engine exhaust noise sound waves reach the two-way pipeline through the pipeline and then meet at the other side, the sound waves are offset due to interference.
As shown in fig. 3, the present invention further includes: the processor overheating signal receiving end is connected with the signal output end of the overheating protection circuit, the processor display signal sending end is connected with the signal receiving end of the display unit, the processor temperature signal receiving end is connected with the signal sending end of the analog-to-digital conversion circuit, the signal receiving end of the analog-to-digital conversion circuit is connected with the signal sending end of the temperature sensor, the under-voltage protection circuit signal sending end is connected with the processor voltage signal receiving end, the over-current protection circuit signal sending end is connected with the signal receiving end of the processor circuit, the processor motor working signal end is connected with the signal receiving end of the isolation driving circuit, the signal sending end of the isolation driving circuit is respectively connected with the base of the fifth transistor and the base of the eighth transistor, the signal sending end of the isolation driving circuit is respectively connected with the base of the, an emitter of a fifth transistor is respectively connected with a collector of the eighth transistor and a first end of the circulating water pump, an emitter of a sixth transistor is respectively connected with a collector of the ninth transistor and a second end of the circulating water pump, an emitter of a seventh transistor is respectively connected with a collector of the tenth transistor and a third end of the circulating water pump, a collector of the fifth transistor, a collector of the sixth transistor and a collector of the seventh transistor are connected with a positive end of a rectifying circuit, an emitter of the eighth transistor, an emitter of the ninth transistor and an emitter of the tenth transistor are connected with a negative end of the rectifying circuit, and the rectifying circuit. The work of the circulating water pipe is monitored in real time through the corresponding protection circuit, the stable operation of the water pump is ensured, and the service life of the circulating refrigeration system is prolonged.
As shown in fig. 4, a first standing wave tube 13 is disposed inside the air inlet tube 1, a second standing wave tube 14 is disposed inside the through tube 7, a third standing wave tube 15 is disposed inside the exhaust tube 3, a first vibrator 18 and a second vibrator 19 are respectively mounted at opposite positions inside the third chamber 6, a first standing wave tube signal transmitting end is connected to a first processor first signal receiving end, a second standing wave tube signal transmitting end is connected to a first processor second signal receiving end, a third standing wave tube signal transmitting end is connected to a first processor third signal receiving end, the first vibrator signal receiving end is connected to a first vibration driving circuit signal transmitting end, the first vibration driving circuit signal receiving end is connected to a first processor first vibration signal transmitting end, the second vibrator signal receiving end is connected to a second vibration driving circuit signal transmitting end, and the second vibration driving circuit signal receiving end is connected to a first processor second vibration signal transmitting end;
as shown in fig. 5, the first vibration driving circuit and the second vibration driving circuit include: the anode of the first diode is connected with the cathode of the second diode, the cathode of the second diode is grounded, the cathode of the first diode is respectively connected with the anode of the second diode and one end of the second capacitor, one end of the second capacitor is respectively connected with one end of the first capacitor and one end of the first resistor, the other end of the first resistor is respectively connected with the other end of the first capacitor and one end of the second resistor, the other end of the second capacitor is connected with the anode input end of the first amplifier, the cathode input end of the first amplifier is respectively connected with one end of the second resistor and the anode input end of the second amplifier, the cathode input end of the second amplifier is connected with one end of the third resistor, the other end of the third resistor is grounded, the output end of the second amplifier is respectively connected with the other end of the second resistor and one end of the fourth resistor, the first end of the fourth resistor is connected with the anode input end of the third amplifier, the other end of the fifth resistor is respectively connected with one end of a sixth resistor and one end of a fifth capacitor, the other end of the third capacitor is respectively connected with one end of the sixth resistor and one end of a fourth capacitor, the other end of the sixth resistor is respectively connected with the other end of the fourth capacitor and one end of a seventh resistor, the other end of the fifth capacitor is grounded, the other end of the seventh resistor is connected with the output end of a third amplifier, the other end of the seventh resistor is also connected with the base electrode of a first transistor, the collector electrode of the first transistor is respectively connected with a power supply end and the emitter electrode of a third transistor, the emitter electrode of the first transistor is respectively connected with one end of a first inductor and the collector electrode of the second transistor, the other end of the fourth capacitor is also connected with the base electrode of a second transistor, the emitter electrode of the second transistor is respectively connected with one end of a fourth transistor, one end of the first inductor is further connected with one end of a ninth resistor, the other end of the first inductor is connected with one end of an eighth resistor, the other end of the eighth resistor is connected with the positive electrode input end of a fourth amplifier, the other end of the ninth resistor is connected with the negative electrode input end of the fourth amplifier, the output end of the fourth amplifier is connected with the signal receiving end of a vibrator, the bases of the third transistor and the fourth transistor are further connected with the signal input end of a binarization circuit, the signal output end of the binarization circuit is connected with the signal input end of a synchronous detection circuit, the signal output end of the synchronous detection circuit is connected with the input end of. The amplifier is LF 353. The circuit is used for driving the vibrator to work, and the vibration frequency is adjusted in real time after the sound sampling signal is obtained, so that noise pollution is counteracted.
The processor employs a DSPIC30F digital signal controller.
The working principle of the invention is as follows:
as shown in fig. 1 and 2, the vibration sound wave flows backwards in the gas inlet pipe 1 along with the gas, when the gas flows to the first chamber 4, part of the vibration sound wave enters the first chamber 4 and is silenced by the silencing material on the inner wall of the first chamber 4, the rest vibration sound wave and the gas continue to flow backwards and enter the second chamber 5, wherein the vibration sound wave forms friction interference cancellation with the same-frequency sound wave transmitted from the third chamber 6 at the pipe orifice in front of the through pipe 7, and the gas and the last small part of the vibration sound wave are discharged from the gas outlet pipe 3.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. The utility model provides a comprehensive test cooling system for vehicle noise elimination, includes intake pipe (1), barrel (2) and blast pipe (3) that set gradually backward in the past, the front end of barrel (2) is sealed by protecgulum (8), and the rear end is sealed characterized by back lid (9): the inner part of the cylinder body (2) is divided into three chambers by a front partition plate (10) and a rear partition plate (11), a first chamber (4), a second chamber (5) and a third chamber (6) are sequentially arranged from front to back, the volume of the first chamber (4) is basically equal to that of the second chamber (5), the volume of the third chamber (6) is 3-4 times that of the first chamber (4), and a circle of silencing material (12) is arranged on the inner annular wall of the first chamber (4); the rear end of the air inlet pipe (1) penetrates through the front cover (8) and the front partition plate (10) from front to back and extends into the second chamber (5), the rear end part of the air inlet pipe (1) is close to the rear partition plate (11), and the pipe bodies of the air inlet pipe (1) positioned in the first chamber (4) and the second chamber (5) are provided with circulation meshes; the front end of the exhaust pipe (3) penetrates through the rear cover (9) and the rear partition plate (11) from back to front and extends into the second chamber (5), the front end part of the exhaust pipe (3) is close to the front partition plate (10), and a pipe body of the exhaust pipe (3) positioned in the second chamber (5) is provided with circulation meshes; a through pipe (7) penetrates through the upper part of the rear partition plate (11), the front port of the through pipe (7) extends into the second chamber (5), the front port of the through pipe (7) is positioned between the rear end part of the air inlet pipe (1) and the front end part of the exhaust pipe (3), and the rear port of the through pipe (7) extends into the third chamber (6);
a first standing wave tube (13) is arranged on the inner side of the air inlet pipe (1), a second standing wave tube (14) is arranged on the inner side of the through pipe (7), a third standing wave tube (15) is arranged on the inner side of the exhaust pipe (3), a first vibrator (18) and a second vibrator (19) are respectively arranged at opposite positions on the inner side of the third chamber (6), a first standing wave tube signal sending end is connected with a first signal receiving end of a first processor, a second standing wave tube signal sending end is connected with a second signal receiving end of the first processor, a third standing wave tube signal sending end is connected with a third signal receiving end of the first processor, a first vibrator signal sending end is connected with a first vibration driving circuit signal sending end, a second vibrator signal receiving end is connected with a second vibration driving circuit signal sending end, and a second vibration driving circuit signal receiving end is connected with a second vibration signal sending end of the first processor;
the double-layer radiating fins (17) are arranged on one side of the barrel (2), the circulating water pipe (16) is arranged at the interlayer of the radiating fins and is in an S-shaped layout, the air guide pipe (20) is arranged on the other side of the barrel (2), the air guide pipe (20) is in an arched shape, a temperature sensor is arranged in the barrel to monitor the temperature of the barrel, and a circulating water pump is arranged on one side of the circulating water pipe (16);
the second processor overheating signal receiving end is connected with the signal output end of the overheating protection circuit, the second processor display signal sending end is connected with the signal receiving end of the display unit, the second processor temperature signal receiving end is connected with the signal sending end of the analog-to-digital conversion circuit, the signal receiving end of the analog-to-digital conversion circuit is connected with the signal sending end of the temperature sensor, the under-voltage protection circuit signal sending end is connected with the second processor voltage signal receiving end, the overcurrent protection circuit signal sending end is connected with the second processor circuit signal receiving end, the second processor motor working signal end is connected with the isolation driving circuit signal receiving end, the isolation driving circuit signal sending end is respectively connected with the base of the fifth transistor and the base of the eighth transistor, the isolation driving circuit signal sending end is respectively connected with the base of the sixth transistor and the base of the ninth transistor, and the isolation driving circuit signal sending, an emitter of a fifth transistor is respectively connected with a collector of the eighth transistor and a first end of the circulating water pump, an emitter of a sixth transistor is respectively connected with a collector of the ninth transistor and a second end of the circulating water pump, an emitter of a seventh transistor is respectively connected with a collector of the tenth transistor and a third end of the circulating water pump, a collector of the fifth transistor, a collector of the sixth transistor and a collector of the seventh transistor are connected with a positive end of a rectifying circuit, an emitter of the eighth transistor, an emitter of the ninth transistor and an emitter of the tenth transistor are connected with a negative end of the rectifying circuit, and the rectifying circuit.
2. The integrated test cooling system for muffling vehicles according to claim 1, wherein: the length of the first chamber (4) and the second chamber (5) is 88mm, and the length of the third chamber (6) is 300 mm.
3. A comprehensive test cooling system for muffling vehicles according to claim 1 or 2, wherein: the length of the through pipe (7) extending into the second chamber (5) and the third chamber (6) is 40-50mm, and the pipe diameter of the through pipe (7) is 25-30 mm.
4. The integrated test cooling system for muffling vehicles according to claim 3, wherein: the length of the through pipe (7) extending into the second chamber (5) and the third chamber (6) is 45mm, and the pipe diameter of the through pipe (7) is 28 mm.
5. The integrated test cooling system for muffling vehicles according to claim 1, wherein: the front cover (8) and the rear cover (9) are both of circular flat plate structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165623.2A CN108729982B (en) | 2018-02-28 | 2018-02-28 | Comprehensive test cooling system for vehicle noise elimination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165623.2A CN108729982B (en) | 2018-02-28 | 2018-02-28 | Comprehensive test cooling system for vehicle noise elimination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108729982A CN108729982A (en) | 2018-11-02 |
| CN108729982B true CN108729982B (en) | 2020-09-08 |
Family
ID=63940467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810165623.2A Active CN108729982B (en) | 2018-02-28 | 2018-02-28 | Comprehensive test cooling system for vehicle noise elimination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108729982B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2801634B1 (en) * | 1999-11-25 | 2002-04-05 | Ecia Equip Composants Ind Auto | ACTIVE NOISE ATTENUATION DEVICE OF AN ENGINE COMPRISING AT LEAST TWO EXHAUST OUTLETS |
| JP4477734B2 (en) * | 2000-02-07 | 2010-06-09 | ヤンマー株式会社 | Active silencer |
| JP2002161737A (en) * | 2000-11-29 | 2002-06-07 | Sanshin Ind Co Ltd | Exhaust gas cleaning device in engine and small size ship carrying this device |
| DE10100241A1 (en) * | 2001-01-05 | 2002-07-18 | Hde Metallwerk Gmbh | Heat exchanger tube for liquid or gaseous media |
| CA2385797C (en) * | 2001-05-15 | 2009-07-14 | Honda Giken Kogyo Kabushiki Kaisha | Outboard motor |
| DE102007022851A1 (en) * | 2007-05-15 | 2008-11-20 | Robert Bosch Gmbh | Sound emission reducing method for petrol engine with direct gasoline injection, involves producing body sound vibrations in engine, and compensation vibrations to superimpose sound vibrations in no-load operation of engine |
| US7775320B2 (en) * | 2008-03-20 | 2010-08-17 | Honda Motor Co., Ltd. | Method for reducing noise in a vehicle cabin |
-
2018
- 2018-02-28 CN CN201810165623.2A patent/CN108729982B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108729982A (en) | 2018-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207526554U (en) | A kind of Double-casing mobile muffler | |
| CN104455900B (en) | A kind of multifunctional composite pipe muffler | |
| CN108716427B (en) | Comprehensive test cooling working method for vehicle silencing device | |
| CN106762075A (en) | A kind of novel environment friendly automobile exhaust pipe | |
| CN108729982B (en) | Comprehensive test cooling system for vehicle noise elimination | |
| CN201184226Y (en) | Automobile energy-saving silencer | |
| CN210948860U (en) | Exhaust pipe with heat shield | |
| CN210768980U (en) | Silencer for high-power diesel generating set | |
| CN209100123U (en) | A kind of high-power diesel generator exhaust silencer | |
| CN108518258B (en) | Standing wave tube collecting, silencing and resonating system of vehicle silencing device | |
| CN108661751B (en) | Collection circulation refrigeration working method for vehicle silencing | |
| CN217206614U (en) | Novel conical silencer with pressure relief structure | |
| CN211258758U (en) | Silencer for double exhaust pipes | |
| CN206917701U (en) | Exhaust silencer and gas extraction system | |
| CN206487543U (en) | A kind of diesel-driven generator exhaust silencer system | |
| CN206274011U (en) | A kind of low impulsive force muffler of microperforated panel | |
| CN209892295U (en) | Silencer for general gasoline engine | |
| CN207715213U (en) | A kind of engine exhaust muffler | |
| CN209100125U (en) | A kind of air exhaust muffler device and generating set | |
| CN207718800U (en) | A kind of array type silencer | |
| CN207437173U (en) | A kind of exhaust silencer | |
| CN203476442U (en) | Horizontally-mounted silencer | |
| CN207634182U (en) | A kind of single-cylinder air-cooled mute type unit air channel structure | |
| CN219452205U (en) | Engine exhaust device | |
| CN216110918U (en) | Exhaust silencer for eliminating idle low-frequency noise |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200819 Address after: Room 703, building 1, Yuhong peninsula garden, Tengda Road, Lubei street, Luqiao District, Taizhou City, Zhejiang Province Applicant after: Taizhou mingchuang Technology Co., Ltd Address before: 400000 Chongqing city Shapingba District University City Fuli city A6-2505 Applicant before: Cheng Ying |
|
| TA01 | Transfer of patent application right |