CN202250328U - All-terrain vehicular exhaust silencer with low noise - Google Patents

Abstract

The utility model relates to an all-terrain vehicular exhaust silencer with low noise and high performance, which comprises a silencer end cover, an exhaust pipe connection pipe, an outer connection pipe, a clapboard, an inner connection pipe, a tail pipe, an inner core assembly, an inner tail cover, an outer tail cover, a connection screw and an outer cylinder body. By adopting an optimized flow field technology, the exhaust airflow resistance is reduced, so that performances of an engine are optimized; by rationally designing structures and sizes of chambers and arrangement of resonance holes, the structural size is reduced, the silencing effect is increased, and the exhaust noise is reduced; furthermore, by rationally designing parameters and adopting glass fibre, the sound quality is optimized, and the structural intensity is increased.

Description

Low noise all-terrain vehicle is used exhaust silencer

Technical field

The utility model belongs to the automotive engineering field, especially relates to a kind of low noise all-terrain vehicle and uses exhaust silencer.

Background technique

All-terrain vehicle (the domestic beach buggy that is referred to as again, be called for short ATV) a kind ofly is designed to non-expressway and goes, and has four low pressure tires, strides a type seat, relies on steering handle control direction, the vehicle that only allows a people to drive.All-terrain vehicle can be divided into plain edition, sports type, practical three types according to different purposes.Customs statistics, about 870,000 of the all-terrain vehicle marketing scale in the last year whole world, expectation in this year can be to 1,000,000, and its Middle and North America is the staple market, accounts for 75%.

Along with the increase of all-terrain vehicle output and recoverable amount, the social concern of the noise pollution aspect that it brings is aggravation thereupon also.40 decibels is normal ambient sound, is generally considered to be the sanitary standard of noise.Be the noise that is harmful to more than this, it influences sleep and rest, interference work, hinders and talk, make the impaired hearing evil, even causes the disease of aspects such as cardiovascular system, nervous system, digestive system.The noise that all-terrain vehicle is sent can reach 100 decibels sometimes.

Therefore, the noise control technique of the all-terrain vehicle important that just seems also is a powerful measure that promotes product competitive ability.Exhaust silencer is the requisite parts of all-terrain vehicle, its mainly act on be allow air-flow within it portion pass through, make its attenuate acoustic noise energy.The quality of silencing apparatus performance not only influences the size of all-terrain vehicle noise, and all influential to performances such as the power of motor, oil consumption, moment of torsion, dischargings.If silencing apparatus is excessive to air resistance, then can cause the engine exhaust back pressure to increase, cause exhaust not smooth, exhaust efficiency descends, thus the influence burning reduces engine performance.

Under market environment now; Design is had higher requirement to exhaust silencer: 1, Along with people's is to the continuous attention of noise pollution; Rules to vehicle noise are constantly strict; Exhaust sound must strictly be controlled as the vehicle main noise source, and this just requires the acoustic attenuation performance of silencing apparatus further to improve.2, tail-gas law is more and more stricter, and this just requires motor to improve combustion efficiency, reduces pollutant emission, so the power loss of silencing apparatus is more little good more.Guaranteeing under the prerequisite of acoustic attenuation performance that 3, the boundary dimension that should as far as possible dwindle silencing apparatus is beneficial to the layout of car load.4, Motor Vehicle sound quality more and more receives the market attention, and this just requires silencing apparatus when reducing noise, and higher sound quality can be provided, and just sound is pleasing to the ear.

Existing silencing apparatus technology, the exhaust silencer structure that all-terrain vehicle is generally used comprise housing, resonator, tail pipe, by preceding to after be successively set on a chamber, two chambeies and three chambeies in the housing.The waste gas that motor is discharged generally be earlier through two chambeies to three chambeies, the chamber of turning back again reaches noise reduction and purifies purpose then through the catalytic converter of catalyst is housed.Its exhaust resistance is excessive, even it is functional to disappear, also can cause engine performance to be difficult to improve; Indexs such as oil consumption all can become badly, and are relatively poor to the control effect of high-frequency noise simultaneously, and all-terrain vehicle is because its service condition; High-frequency noise is planted in its noise formation and is occupied significant proportion; So the existing technology silencing apparatus is unsatisfactory to the control effect of high-frequency noise, the sound quality is also relatively poor, and bigger to the engine performance influence.Therefore, need transform with exhaust silencer device, make its compact structure reasonable, can reduce exhaust sound, optimize engine performance and raising sound quality existing all-terrain vehicle.

The model utility content

The utility model technical problem to be solved is to provide a kind of can reduce exhaust sound, optimizes engine performance, and the all-terrain vehicle of raising sound quality is used exhaust silencer.

The technological scheme of the utility model is following: a kind of low noise, high performance all-terrain vehicle are used exhaust silencer; Comprise silencing apparatus end cap, outlet pipe connecting tube, connect pipe, tail pipe, inner core combination, interior tail-hood, outer tail-hood, attachment screw, outer cylinder body in outer tube, dividing plate, the connection; Its main points are: said outer cylinder body and said silencing apparatus end cap, interior tail-hood are welded to connect; Form a whole, be welded to form three chambers by pipe, tail pipe in said outlet pipe connecting tube, connection outer tube, dividing plate, the connection, after exhaust waste gas gets into a chamber, two chambeies; Entering inner core combination, and then get into three chambeies and enter atmosphere through tail pipe.

Further, said inner core combination is made up of glass fibre, is installed in the space that is surrounded by silencing apparatus connection outer tube and outer cylinder body;

Further, have resonant through holes on the said connection inner pipe wall, waste gas can pass through the resonance hole repeatedly, thus the attenuate acoustic noise energy;

Further, have through hole around the said silencing apparatus dividing plate, part waste gas can directly get into three chambeies through through hole from a chamber, thereby reduces the part exhaust resistance, optimizes engine performance;

Further, said connection outer tube wall has through hole, but the waste gas via through holes gets into the inner core combination from two chambeies, afterwards all again via through holes get into three chambeies, can effectively utilize glass fibre absorbing high-frequency noise like this;

Further, said tail pipe is welded to connect with the said outer tube, interior tail-hood, outer cylinder body of being connected, thereby the waste gas that gets into three chambeies can enter atmosphere through tail pipe, and said tail pipe is processed with diagonal cut joint, and Open Side Down, can effectively reduce vehicle like this and pass through noise;

Further, said outer tail-hood is connected with interior tail-hood and outer cylinder body through attachment screw, is connected with tail pipe through welding, improves the tail pipe join strength, and elegant in appearance;

Further, welded nut and end cap are welded to connect, and are used for installing the engine exhaust pipe attachment screw.

Beneficial effect: the utility model adopts optimizes the flow field technology, the exhaust airstream resistance is reduced, thereby optimized engine performance; Arrange through appropriate design chamber structure, size and resonance hole, reduced physical dimension, improved the noise elimination effect, reduced exhaust sound; Through appropriate design parameter and employing glass fibre, optimized the sound quality, improved structural strength.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 be Fig. 1 along A-A to sectional view.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

As depicted in figs. 1 and 2: a kind of low noise, high performance all-terrain vehicle are used exhaust silencer, comprise pipe 7, tail pipe 4, inner core combination 8, outer tail-hood 1, interior tail-hood 3, attachment screw 2, welded nut 11, outer cylinder body 9 in silencing apparatus end cap 12, outlet pipe connecting tube 10, connection outer tube 5, dividing plate 6, the connection.Said outer cylinder body 9 and said silencing apparatus end cap 12, interior tail-hood 3 are welded to connect; Form a whole; By said outlet pipe connecting tube 10, connect outer tube 5, dividing plate 6, connect in pipe 7, tail pipe 4 be welded to form three chambers; After exhaust waste gas gets into a chamber 13, two chambeies 14, get into the inner core combination, and then get into three chambeies 15 and enter atmosphere through tail pipe 4.Said inner core combination 8 is made up of glass fibre, is installed in by said silencing apparatus to connect in the space that outer tube 5 and outer cylinder body 9 surround.Have resonant through holes on pipe 7 tube walls in the said connection, waste gas can pass through the resonance hole repeatedly, thus the attenuate acoustic noise energy.Have through hole around the said silencing apparatus dividing plate 6, part waste gas can directly get into three chambeies 15 through through hole from a chamber 13, thereby reduces the part exhaust resistance, optimizes engine performance.Said connection outer tube 5 tube walls have through hole, but the waste gas via through holes gets into inner cores combination 8 from two chambeies 14, afterwards all again via through holes get into three chambeies 15, can effectively utilize glass fibre absorbing high-frequency noise like this.Said tail pipe 4 is welded to connect with the said outer tube 5, interior tail-hood 3, outer cylinder body 9 of being connected, thereby the waste gas that gets into three chambeies 15 can enter atmosphere through tail pipe 4, and said tail pipe 4 has diagonal cut joint, and Open Side Down, can effectively reduce vehicle like this and pass through noise.Said outer tail-hood 1 is connected with interior tail-hood and outer cylinder body 9 through attachment screw 2, is connected with tail pipe 4 through welding, improves tail pipe 4 join strengths, and elegant in appearance.Welded nut 11 is welded to connect with end cap 12, is used for connecting the engine exhaust pipe screw.

The above embodiment is merely the preferred embodiment of the utility model; It is not restriction with the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.

Claims (5)

1. A low-noise all-terrain vehicle exhaust muffler, comprising muffler end cap (12), exhaust pipe connecting pipe (10), connecting outer pipe (5), dividing plate (6), connecting inner pipe (7 ), tailpipe (4), inner core combination (8), outer tail cap (1), inner tail cap (3), connecting screw (2), welding nut (11), outer cylinder (9), is characterized in that: the outer cylinder (9) and the The muffler end cover (12) and the inner tail cover (3) are welded and connected to form a whole. The exhaust pipe connecting pipe (10), connecting outer pipe (5), partition (6), and connecting inner pipe (7 ), the tailpipe (4) is welded to form three chambers, the exhaust gas enters the first chamber (13) and the second chamber (14), enters the inner core combination (8), and then enters the third chamber (15) through the tailpipe (4) into the atmosphere. 2. The low-noise all-terrain vehicle exhaust muffler according to claim 1, characterized in that: the inner core combination (8) is made of glass fiber, and is installed in the connection between the outer pipe (5) and the muffler. In the space enclosed by the outer cylinder (9). 3. The low-noise all-terrain vehicle exhaust muffler according to claim 1, characterized in that: the connecting inner pipe (7) has a resonant through hole on the pipe wall. 4. The low-noise all-terrain vehicle exhaust muffler according to claim 1, characterized in that: the muffler partition (6) is surrounded by through holes. 5. The low-noise all-terrain vehicle exhaust muffler according to claim 1, characterized in that: the tailpipe (4) is processed with an oblique opening, and the opening is downward.

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