CN201187337Y

CN201187337Y - Silencer structure of vehicle exhaust pipe

Info

Publication number: CN201187337Y
Application number: CNU2008200072616U
Authority: CN
Inventors: 陈顺来
Original assignee: LAI YU ENTERPRISE CO Ltd
Current assignee: LAI YU ENTERPRISE CO Ltd
Priority date: 2008-03-11
Filing date: 2008-03-11
Publication date: 2009-01-28
Anticipated expiration: 2018-03-11

Abstract

The utility model relates to a muffler for a vehicle exhaust pipe. The muffler mainly comprises a drum with openings at both ends and a noise-eliminating pipe coated with noise-absorbing cotton inserted in the drum, wherein noise-eliminating holes are densely distributed on the surface of the noise-eliminating pipe, the body of the noise-eliminating pipe is coiled spirally, an internal sleeve is fixedly sleeved at the inside front end of the spiral body of the noise-eliminating pipe, the internal sleeve is a tapered piece with a mouth opening forwards and outwards, the mouth is in the close connection with the noise-eliminating pipe, and a plurality of through holes are formed near the junction between the mouth and the noise-eliminating pipe. Accordingly, the muffler allows the exhaust pipe in the moderate return pressure and can accelerate the discharge of the waste gas while reducing the noise and increasing the acceleration velocity of the vehicle.

Description

The muffler structure of blast duct for vehicle

Technical field

The utility model system is relevant with a kind of automobile exhaust pipe, more detailed it, be meant especially a kind ofly exhaust gas discharging is quickened and alleviated the muffler structure of noise and the blast duct for vehicle of lifting vehicle acceleration.

Background technique

The outlet pipe of vehicle generally includes the baffler in stage casing and the baffler of back segment, is connected in series with connecting pipe between each baffler, and is equipped with hush pipe in baffler, is coated with the noise reduction cotton on the hush pipe, and uses increase erasure effect; Air displacement is an index of engine ability again, the back pressure size of exhaust, output that also can relationship engine torsion, back pressure is low excessively, causes combustion flame to go out exhaust valve easily, and exhaust valve is burnt, so flame that suitable back pressure can be gone out when keeping out exhauxt valve opens, back pressure is low excessively, also can make engine power output decline, and the speed of exhaust simultaneously also can have influence on the erasure effect and the acceleration of vehicle.

In view of this inventor thinks and the idea of creation, then is designed with many years of experience, through inquiring into and study sampling test in many ways, and repeatedly revises improvement, is release the utility model.

The model utility content

Main purpose of the present utility model is to provide a kind of and exhaust gas discharging is quickened and is alleviated the muffler structure of noise and the blast duct for vehicle that promotes vehicle acceleration.

To achieve these goals, the muffler structure of blast duct for vehicle of the present utility model, this baffler mainly tie up to and wear an outer hush pipe with acoustical cotton in the ostiolate cylindrical shell in two ends, are characterized in:

On this hush pipe face is to be densely covered with bloop, and its pipe shaft place is twisted into the helical body, cover in intrinsic one is overlapped at helical body pipe shaft front end place in this hush pipe more in addition, should interior cover be an outer cone-shaped of dehiscing forward, dehisce to locate proper outward and hush pipe driving fit binding, and its nearly connecting end place offer some through holes.

Should also can be twisted into helical by interior cover.

Hush pipe can be coated with the catalyst transforming agent with the interior cover inner and outer pipes wall of being located in the pipe.

The muffler structure of the blast duct for vehicle of forming by above-mentioned member, the waste gas of vehicular discharge can produce the suitable back pressure except that the interior cover through hush pipe, the air-flow that cover passes through because of its sectional area convergent effect makes is again accelerated, and the helical pipe shaft generation " vortex principle " through hush pipe can make waste gas produce the eddy current acceleration in pipeline again, not only can promote the acceleration of vehicle, also can alleviate noise, waste gas forms vortex type air-flow rapidly through hush pipe again, also can make unburnt gas generation molecule high temperature collision in the waste gas, vaporization is burning again, and can reduce harmful gas in the waste gas to pollution that environment caused, again and baffler of the present utility model after throttle is decontroled, retain in waste gas in the hush pipe, can continue that outside thrust is arranged because of screw action, not return vibrations and the resonance phenomenon that is produced in the engine so can not produce the gas suck-back.

Description of drawings

Fig. 1 is a combination generalized section of the present utility model.

Fig. 2 is the stereogram of the utility model hush pipe.

Fig. 3 is the part section schematic perspective view of the utility model hush pipe.

Air-flow schematic representation when Fig. 4 is the utility model exhaust.

Fig. 5 is another embodiment's of the utility model a part section schematic perspective view.

Embodiment

Seeing also Fig. 1～Fig. 3, is the muffler structure of a kind of blast duct for vehicle of the utility model, and this baffler 10 mainly ties up to and wears an outer hush pipe 13 with acoustical cotton 12 in the ostiolate cylindrical shell 11 in two ends, wherein:

13 of this hush pipes are gone up system and are densely covered with bloop 130, and its pipe shaft place is twisted into helical body 131, cover 14 in intrinsic one is overlapped at helical body 131 pipe shaft front end places in this hush pipe 13 more in addition, should interior cover 14 be an outer cone-shaped of dehiscing forward, dehisce to locate proper outward and hush pipe 13 driving fits binding, and its nearly connecting end place offers some through holes 140, should also be twisted into helical by interior cover 14 again.

By for further understanding the effect that the utility model structure characteristics, application technology means and institute's expection are reached, now the utility model usage mode is narrated, believing be able to have more deep and concrete understanding to the utility model therefrom, as described below:

The continuous Fig. 4 that sees also, baffler 10 structures of the present utility model, by above-mentioned structure design, when waste gas that engine is discharged enters in by hush pipe 13, except that the interior cover 14 through hush pipe 13 can produce the suitable back pressure, the cover 14 generation eddy current acceleration in gradually-reducing shape is spiral again earlier of its most of waste gas, the waste gas of scurrying into via some through holes 140 at interior cover 14 connecting end places compiles in hush pipe 13 again, because producing " vortex principle ", helical body 131 pipe shafts of hush pipe 13 help waste gas acceleration discharge again, and the air-flow that makes the bloop 130 of scurrying out is subjected to influence that air-flow in the pipe quickens and by drawing, therefore can significantly reduce air-flow hits the noise that barrel produces, waste gas forms vortex type air-flow rapidly through hush pipe 13 again, also can make unburnt gas generation molecule high temperature collision in the waste gas, vaporization is burning again, and can reduce harmful gas in the waste gas to pollution that environment caused, again and baffler of the present utility model 10 after throttle is decontroled, retain in waste gas in the hush pipe 13, can continue that outside thrust is arranged because of screw action, not return vibrations and the resonance phenomenon that is produced in the engine so can not produce the gas suck-back.

Advantageously, helical hush pipe 13 of the present utility model can be coated with one deck catalyst transforming agent A (as Fig. 5) with the interior cover 14 inner and outer pipes walls of being located in the pipe, and can be used to substitute the position of Catalytic Converter originally, waste gas because of producing centrifugal action, the helical pipe shaft is contacted with catalyst transforming agent A in hush pipe 13, for the waste gas that is produced in the vehicle operation (as HC, CO, NO _X), can effectively significantly reduce.

In sum, the utility model has its splendid progressive practicability in fact in like product, all over looking into domestic and international technical data about this class formation, also finds no identical construction in the document and exists formerly simultaneously.

Yet the above only is of the present utility model one preferable possible embodiments, so the equivalent structure that all acts application the utility model specification and claim are done changes, ought to be included in the claim of the present utility model.

Claims

1, a kind of muffler structure of blast duct for vehicle, this baffler tie up to and wear an outer hush pipe with acoustical cotton in the ostiolate cylindrical shell in two ends, it is characterized in that:

2, the muffler structure of blast duct for vehicle as claimed in claim 1 is characterized in that, cover also is twisted into helical in this.

3, the muffler structure of blast duct for vehicle as claimed in claim 1 is characterized in that, hush pipe is coated with the catalyst transforming agent with the interior cover inner and outer pipes wall of being located in the pipe.