CN206801649U - A kind of elliptic cross-section muffler ASSY - Google Patents

Abstract

A kind of elliptic cross-section muffler ASSY applied to heavy truck, is related to the housing of the technical field of automobile exhaust system, including cross section for ellipse, and housing has front and rear cover, internal partition, air inlet pipe, escape pipe, communicating pipe are set in housing.Resonant cavity is formed between internal partition, forms expansion cavity between internal partition and front and rear cover respectively, pipe uses porous tubular construction.End cap, internal partition support and constrain blast pipe, escape pipe and communicating pipe.Deadener is filled in resonant cavity.End cap dividing plate is set respectively on the inside of front and rear cover, deadener is set between end cap and end cap dividing plate.Air inlet tube end has fluting, and front and rear cover is stamped with groove structure respectively, and deadener is high temperature resistance glass fiber felt, and end cap dividing plate, the pore structure of internal partition are respectively provided with flange.The housing profile of the utility model ellipse has adapted to the space structure of the vehicle frame of heavy truck so that noise is effectively reduced.

Description

A kind of elliptic cross-section muffler ASSY

Technical field

The technical field of automobile exhaust system is the utility model is related to, more particularly to a kind of ellipse applied in heavy truck Tee section muffler ASSY.

Background technology

Silencer is the essential device of automobile engine exhaust system, it is desirable to after it can discharge engine combustion Waste gas, the enough superior structurals with itself of and can reduce exhaust noise.Implementation and double fuel tank technologies with the discharge standard of state four Using requirement of the heavy truck for arrangement space is more and more harsher, for bigger saving arrangement space, facilitates parts Arrangement at utmost utilizes arrangement space, it is necessary to design and develop out special-shaped parts.

The silencer of prior art is as depicted in figs. 1 and 2.It is a kind of square muffler of prior art shown in Fig. 1, Fig. 2 Shown is a kind of silencer of cross section of prior art for circle.The shortcomings that following, square noise elimination be present in above-mentioned silencer Device is typically located at the left and right longeron both sides of vehicle frame, requires high to arrangement space；Circular muffler is typically located at frame inside, For the small space of cuboid, space availability ratio is not high.

Utility model content

The purpose of this utility model is to provide a kind of elliptic cross-section muffler ASSY, to solve of the prior art ask Topic, maximally utilizes arrangement space, and ensure that gas extraction system performance is up to standard as far as possible.

The technical scheme that the utility model uses to solve its technical problem is：A kind of elliptic cross-section silencer is total Into, including cross section is the housing of ellipse, housing has front and rear cover, two internal partitions is set in housing；Silencer is set Air inlet pipe, escape pipe；Resonant cavity is formed between two internal partitions, preceding expansion cavity is form respectively between internal partition and front and rear cover With rear expansion cavity；

Air inlet pipe passes through preceding expansion cavity and resonant cavity from drive end bearing bracket, stretches into rear expansion cavity, escape pipe passes through from rear end cap Expansion cavity and resonant cavity afterwards, before stretching into expansion cavity；Communicating pipe is porous tubular construction, through resonant cavity, before connection expansion cavity and Expansion cavity afterwards；

It is porous tubular construction that air inlet pipe, which is in resonant cavity and the part of rear expansion cavity, and escape pipe is in resonant cavity and preceding expansion The part of chamber is porous tubular construction；

It is provided with front and rear cover, internal partition and blast pipe, escape pipe, the pore structure that connection bobbin carriage adapts to；End cap, it is interior every Plate supports and constrains blast pipe, escape pipe and communicating pipe；

Deadener is filled in resonant cavity.

Further, end cap dividing plate is set respectively on the inside of front and rear cover, deadener is set between end cap and end cap dividing plate；

Further, an internal partition is set again between two internal partitions；

Further, connecting tube is set multiple；

Further, connecting tube is arranged to individual；

Further, air inlet tube end has fluting；

Further, four flutings are symmetrically and evenly distributed with circumference of the air inlet tube end along pipe；

Further, front and rear cover is stamped with groove structure respectively；

Further, the deadener set in resonant cavity, between end cap and end cap dividing plate is high temperature resistance glass fiber felt；

Further, front and rear cover, end cap dividing plate, the pore structure of internal partition are respectively provided with flange.

As a result of above-mentioned technical scheme, the beneficial effects of the utility model are that oval housing profile adapts to The space structure of the vehicle frame of heavy truck, may be arranged at frame inside, resonant cavity, expansion cavity is formd between internal partition, and Support blast pipe, escape pipe and the structure of communicating pipe so that low frequency, intermediate frequency narrow-band noise and the peak noise for discharging waste gas obtain Effectively to reduce.

Brief description of the drawings

Fig. 1 is the schematic diagram of the square muffler of prior art；

Fig. 2 is the schematic diagram that the cross section of prior art is circular silencer；

Fig. 3 is a kind of appearance schematic diagram of elliptic cross-section muffler ASSY of the present utility model；

Fig. 4 is a kind of cross-sectional view of elliptic cross-section muffler ASSY of the present utility model；

Fig. 5 is A-A direction view of the utility model on Fig. 4；

Fig. 6 is B direction view of the utility model on Fig. 4；

Fig. 7 is a kind of structural representation of the air inlet tube end of elliptic cross-section muffler ASSY of the present utility model；

Fig. 8 is a kind of structural representation of the end cap of elliptic cross-section muffler ASSY of the present utility model；

Fig. 9 is a kind of structural representation of the internal partition of elliptic cross-section muffler ASSY of the present utility model；

Figure 10 is the cavity and air flow direction schematic diagram of a kind of elliptic cross-section muffler ASSY of the present utility model.

Embodiment

Specific embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings. Embodiment below with reference to accompanying drawing description is exemplary, is only used for explaining the utility model, and can not be construed to pair Limitation of the present utility model.

Referring to specific embodiment of the present utility model shown in the drawings, Fig. 3 is that elliptic cross-section of the present utility model disappears Sound device assembly appearance profile schematic diagram, Fig. 4 are elliptic cross-section muffler ASSY schematic cross-sections of the present utility model.As schemed Show, a kind of elliptic cross-section muffler ASSY, including cross section is the housing 5 of ellipse, housing 5 has front and rear cover 2, housing Two internal partitions 6 are set in 5；Silencer is provided with air inlet pipe 1 and escape pipe 8；Resonant cavity 200 is formed between two internal partitions 6, Preceding expansion cavity 101 and rear expansion cavity 102 are form respectively between internal partition 6 and front and rear cover 2.

Shown in Figure 4, the embodiment is additionally provided with an internal partition 6 between two internal partitions 6, more firm Ground support air inlet pipe, escape pipe and communicating pipe.

Air inlet pipe 1 passes through preceding expansion cavity 101 and resonant cavity 200 from drive end bearing bracket, stretches into rear expansion cavity 102, escape pipe 8 from Rear end cap passes through rear expansion cavity 102 and resonant cavity 200, before stretching into expansion cavity 101；Communicating pipe 10 is porous tubular construction, is passed through Resonant cavity 200, preceding expansion cavity 101 and rear expansion cavity 102 are connected.The communicating pipe 10 of embodiment shown in accompanying drawing is two It is individual.Also can be arranged as required to as 1 or 3, the quantity such as 4.

It is porous tubular construction that air inlet pipe 1, which is in resonant cavity 200 and the part of rear expansion cavity 102, and escape pipe 8 is in resonance The part of chamber 200 and preceding expansion cavity 101 is porous tubular construction.

Referring to Fig. 5, shown in 6,8,9, it is provided with what is be adapted with blast pipe, escape pipe 8 and communicating pipe 10 on front and rear cover 2 Pore structure 22.Correspondingly, on internal partition 6, have with blast pipe, escape pipe 8 adapt to pore structure 61, also with communicating pipe 10 Adaptable pore structure 62 (embodiment illustrated had two communicating pipes, was arranged in correspondence with two holes 62).

Each end cap 2, internal partition 6 support and constrain blast pipe 1, escape pipe 8 and communicating pipe 10.

As shown in figure 4, filling deadener in resonant cavity 200, the inner side of front and rear cover 2 sets end cap dividing plate 4, end cap respectively Filling deadener in cavity between 2 and end cap dividing plate 4.Above-mentioned deadener uses high temperature resistance glass fiber felt 3.

As shown in fig. 7, the end of air inlet pipe 1 has fluting.In embodiment illustrated, the end of air inlet pipe 1 is along pipe Four flutings are symmetrically and evenly distributed with circumference, and this notching construction is easy to the assembling of silencer and gas exhaust piping.

As shown in figure 8, front and rear cover 2 is stamped with groove structure 21 respectively.This punching structure 21 adds the whole of end cap Body rigidity, avoiding gas from flowing through large impact causes end cap to rupture.

Referring to Fig. 8, shown in the A-A sectional views part in Fig. 9, front and rear cover 2, the pore structure of internal partition 6 are respectively provided with flange, With reinforcement structure and it is easy to be combined with above-mentioned each pipe.Similarly, in the pore structure of end cap dividing plate 4 and the internal partition set up 6 Also there is flange.

Shown in Figure 10, when silencer works, the off-gas flows of engine emission enter its rear portion from air inlet pipe 1 The position of antipriming pipe 7, waste gas are now divided into two streams：One stream enters rear expansion cavity 102, flow expansion, and flow velocity is reduced, and noise is declined Subtract；One stream from the aperture of antipriming pipe 7 enters resonant cavity 200, and the waste gas in resonant cavity 200 is in some low frequency section, due to giving up Gas pulse air-flow produces pressure wave in silencer, and the gas column in small aperture, can be as piston one in the presence of pressure wave Sample moves back and forth, and friction and damping action by aperture wall, part acoustic energy are converted into heat energy so as to consume, and noise obtains Decay.Before waste gas flows into after expansion cavity 101, flow expansion, flow velocity is reduced, and noise is decayed again.The utility model silencer The design of expansion cavity and resonant cavity can eliminate low frequency, intermediate frequency narrow-band noise or the peak noise of waste gas.Waste gas is passing through resonance After chamber, when portion is flowed into the cavity that end cap 2 and end cap dividing plate 4 form, because the inside cavity is filled with high temperature resistant glass Fine felt 3, high temperature resistance glass fiber felt are outstanding sound-absorbing material, and acoustic energy is converted into heat energy by waste gas friction, so as to reduce in waste gas High frequency noise.

Construction, feature and effect effect of the present utility model is described in detail according to embodiment shown in the drawings above Fruit, preferred embodiment of the present utility model is the foregoing is only, but the utility model is not to limit practical range shown in drawing, it is all It is the change made according to conception of the present utility model, or is revised as the equivalent embodiment of equivalent variations, still without departing from specification , all should be in the scope of protection of the utility model during with illustrating covered spirit.

Claims (10)

1. A kind of 1. elliptic cross-section muffler ASSY, it is characterised in that the housing including cross section for ellipse, before housing has Rear end cap, two internal partitions are set in housing；Silencer sets air inlet pipe, escape pipe；Resonant cavity is formed between two internal partitions, Preceding expansion cavity and rear expansion cavity are form respectively between internal partition and front and rear cover；

   Air inlet pipe passes through preceding expansion cavity and resonant cavity from drive end bearing bracket, stretches into rear expansion cavity, escape pipe expands after being passed through from rear end cap Chamber and resonant cavity are opened, before stretching into expansion cavity；Communicating pipe is porous tubular construction, through resonant cavity, connects preceding expansion cavity and rear expansion Open chamber；

   The part that air inlet pipe is in resonant cavity and rear expansion cavity is porous tubular construction, and escape pipe is in resonant cavity and preceding expansion cavity Part is porous tubular construction；

   Be provided with front and rear cover, internal partition and blast pipe, escape pipe, communicating pipe adaptable pore structure；End cap, internal partition branch Support and constrain blast pipe, escape pipe and communicating pipe；

   Deadener is filled in resonant cavity.
2. 2. a kind of elliptic cross-section muffler ASSY according to claim 1, it is characterised in that on the inside of front and rear cover respectively End cap dividing plate is set, deadener is set between end cap and end cap dividing plate.
3. 3. a kind of elliptic cross-section muffler ASSY according to claim 2, it is characterised in that between two internal partitions It is additionally provided with an internal partition.
4. 4. a kind of elliptic cross-section muffler ASSY according to claim 3, it is characterised in that connecting tube sets multiple.
5. 5. a kind of elliptic cross-section muffler ASSY according to claim 4, it is characterised in that connecting tube is arranged to 2.
6. 6. a kind of elliptic cross-section muffler ASSY according to claim 5, it is characterised in that air inlet tube end, which has, to be opened Groove.
7. 7. a kind of elliptic cross-section muffler ASSY according to claim 6, it is characterised in that air inlet tube end is along pipe Four flutings are symmetrically and evenly distributed with circumference.
8. 8. a kind of elliptic cross-section muffler ASSY according to claim 7, it is characterised in that front and rear cover distinguishes punching press Fluted structure.
9. A kind of 9. elliptic cross-section muffler ASSY according to claim 8, it is characterised in that in resonant cavity, end cap with The deadener set between end cap dividing plate is high temperature resistance glass fiber felt.
10. A kind of 10. elliptic cross-section muffler ASSY according to claim 9, it is characterised in that front and rear cover, end cap every Plate, the pore structure of internal partition are respectively provided with flange.