CN107269346A - Engine exhaust muffler - Google Patents
Engine exhaust muffler Download PDFInfo
- Publication number
- CN107269346A CN107269346A CN201710455404.3A CN201710455404A CN107269346A CN 107269346 A CN107269346 A CN 107269346A CN 201710455404 A CN201710455404 A CN 201710455404A CN 107269346 A CN107269346 A CN 107269346A
- Authority
- CN
- China
- Prior art keywords
- chamber
- blast pipe
- cover cylinder
- cylinder
- engine exhaust
- 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.)
- Granted
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Classifications
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- 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
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
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- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
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- 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/2073—Selective catalytic reduction [SCR] with means for generating a reducing substance from the exhaust gases
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- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a kind of engine exhaust muffler, including blast pipe, the left chamber arranged along exhaust pipe length direction is provided with blast pipe, middle chamber and right chamber room and the first hush tube, first hush tube includes the left body being located in left chamber, right body in right chamber room and the middle tube body positioned at middle chamber, left body, the first sound attenuation hole is provided with right body and middle tube body, the second hush tube connected with gas outlet is provided with middle chamber, the second sound attenuation hole in middle chamber is provided with second hush tube, left chamber and right chamber room are connected with air inlet, the cover cylinder being sheathed on middle tube body is provided with middle chamber, the cage apertures inside and outside cover cylinder is provided through on cover cylinder, the cavity of filling urea is provided with cover cylinder, cavity is connected with cage apertures, tail gas is purified processing before discharge, tail gas is avoided to be polluted after discharging to surrounding environment.
Description
Technical field
The present invention relates to noise elimination technique field on engine, more particularly to a kind of engine exhaust muffler.
Background technology
Exhaust noise is the topmost noise source of engine, and it is control exhaust noise most efficient method to install silencer,
In the blast pipe of general automobile engine all can silencer on device, to consume flowed energy, reduce the pressure oscillation width of air-flow
Degree, plays a part of reducing noise.
At present, in the prior art, in the Chinese patent document that Authorization Notice No. is CN201546787U, describe
A kind of engine exhaust muffler, the tail gas of Engine Exhaust Emission is introduced into prime silencer, enters back into rear class silencer, preceding
Level silencer sets three every disk, by three cavity areas of prime silencer Inner Constitution, prime inner tube and prime escape pipe
Sound attenuation hole is provided with tube wall, to reduce noise.
But, there is certain lack in above-mentioned this engine exhaust muffler and existing most of exhaust silencers
Fall into：There is some HC, CO and particulate matter material in tail gas, after rear class silencer, be vented directly to outside blast pipe,
These tail gas do not pass through purified treatment mistake, it is easy to which the environment of surrounding is polluted.
The content of the invention
It is an object of the invention to provide a kind of engine exhaust muffler, the present invention makes tail gas be purified before discharge
Processing, it is to avoid polluted after tail gas discharge to surrounding environment, meanwhile, the cage apertures on cover cylinder disappears with first on the first hush tube
Acoustic aperture coordinates, and plays the effect of dual noise elimination noise reduction.
The present invention above-mentioned technical purpose technical scheme is that：A kind of engine exhaust is eliminated the noise
Device, including blast pipe, the blast pipe include being provided with along exhaust pipe length direction in air inlet and gas outlet, the blast pipe
Left chamber, middle chamber and the right chamber room of arrangement and the first hush tube, first hush tube include the left side being located in left chamber
On body, the right body in right chamber room and the middle tube body positioned at middle chamber, the left body, right body and middle tube body
It is provided with the second hush tube for being provided with and being connected with gas outlet on the first sound attenuation hole, the middle chamber, second hush tube
The second sound attenuation hole in middle chamber is provided with, the left chamber and right chamber room are connected with air inlet, in the middle chamber
It is provided with the cage apertures being provided through on the cover cylinder being sheathed on middle tube body, the cover cylinder inside and outside cover cylinder, the cover cylinder and sets
There is the cavity of filling urea, the cavity is connected with cage apertures.
By using above-mentioned technical proposal, tail gas is entered in left chamber and right chamber room by the inlet port of blast pipe, is connect
And entered by the first sound attenuation hole on the first hush tube in middle chamber, the process of middle chamber is being passed through from the first sound attenuation hole
In, tail gas passes through the cavity for being filled with urea, and urea makes in tail gas as catalyst, and in blast pipe in the presence of high temperature
HC, CO and particulate matter chemically reacted with oxygen, so as to generate nontoxic water and carbon dioxide, so as to be carried out to tail gas
Then purified treatment, the tail gas after purification discharged, the present invention is set on the first hush tube by the second sound attenuation hole from gas outlet
Tail gas clean-up structure, makes tail gas be purified processing before discharge, it is to avoid surrounding environment is polluted after tail gas discharge, together
When, the cage apertures on cover cylinder coordinates with the first sound attenuation hole on the first hush tube, plays the effect of dual noise elimination noise reduction.
Further, the cavity includes multiple along the circumferential above arranged distribution of cover cylinder and the storage chamber of separate presence.
By using above-mentioned technical proposal, cavity, which is divided into multiple self-existent storage chambers, each storage chamber, can fill out
Urea is filled, so that it is more independent during urea reaction in each storage chamber, do not result in the urea being separated by two storage chambers
Interact, the urea in each storage chamber can be fully reacted.
Further, the side of the middle chamber is provided with rotates the bearing being connected, the one of the cover cylinder with cover cylinder one end
End end face is provided through to the connecting shaft outside lumen room, is offered on the side of the middle chamber and connecting shaft sliding coordinates
Annular groove, the ring core of the annular groove and the shaft core of bearing are provided with driving on the axis of middle tube body on the blast pipe
Connecting shaft slides to drive the drive component of cover cylinder rotation.
By using above-mentioned technical proposal, drive component driving cover cylinder is rotated on middle tube body, so that being eliminated the noise first
The tail gas flowed between hole and the second sound attenuation hole, can be chemically reacted with the urea of the upper diverse location of cover cylinder, make tail gas net
Change reaction sufficiently to be carried out, the clean-up effect for reaching tail gas is more excellent.
Further, the drive component includes coaxially being fixed on the internal gear of rotary shaft one end, is rotationally connected with exhaust
External gear on inside pipe wall, the external gear is meshed with internal gear.
By using above-mentioned technical proposal, drive component includes internal gear and external gear, external gear rotation, with internal gear not
Disconnected engagement, so as to drive rotary shaft to be moved in a circle in annular groove, make cover cylinder can rotation, so as to positioned at the first sound attenuation hole and
Cover cylinder position between second sound attenuation hole changes, by the way of engagement, cover cylinder is rotated enhanced convenience, steady
It is fixed.
Further, coaxial be fixed with rotates the rotary shaft being connected, the exhaust with blast pipe side wall on the external gear
The outer knob for being provided with driving rotary shaft rotation of pipe.
By using above-mentioned technical proposal, turning knob drives rotary shaft rotation by knob, so that cover cylinder rotation,
The setting of knob, allows staff to operate the rotation of cover cylinder, compared with prior art, can avoid manually quilt outside blast pipe
The blast pipe of high temperature is scalded, and security and operability are relatively good.
Further, the lateral wall of the blast pipe is provided with the angle index line circumferentially around rotary shaft edge, described
The pointer for calculating the knob anglec of rotation is provided with knob.
By using above-mentioned technical proposal, turning knob, can by the change of the pointer corresponding angle graduation mark on knob
The angle of knob rotation is measured, facilitates staff to learn the angle of blast pipe inner cover cylinder rotation, makes each manual control cover cylinder
Rotation it is more accurate.
Further, multiple positioning holes along the circumferentially upper arranged distribution of knob are provided with the side of the knob, it is described
The lateral wall of blast pipe is provided with the elastic bumps with positioning hole location fit.
By using above-mentioned technical proposal, knob, the positioning hole of elastic bumps and diverse location on knob is determined
Position coordinates, so as to realize that the positioning after knob is fixed, it is to avoid the situation that unintentional rotation occurs in knob occurs, and is turning cover cylinder
It can be fixed after dynamic certain angle.
Further, the interior barrier cylinder and outer barrier cylinder of coaxial line are provided with the middle chamber, the interior barrier cylinder
Outer surface is fitted with the inner surface of cover cylinder, and the inner surface of the outer barrier cylinder is fitted with the outer surface of cover cylinder, the outer barrier cylinder
On be provided with outer air channel between the first sound attenuation hole and the second sound attenuation hole, interior barrier cylinder and offer and outer air channel phase
To interior air channel.
By using above-mentioned technical proposal, the tail gas that the first sound attenuation hole comes out sequentially passes through interior air channel, storage chamber and outer
Air channel, is then entered back into the second hush tube, and the position of air channel is participation vent gas treatment in the urea correspondence in storage chamber
The part of reaction, and urea in other parts storage chamber is then located between interior barrier cylinder and outer barrier cylinder, by interior barrier cylinder and
Outer barrier cylinder is sealed up, and after after the urea reaction certain time in correspondence in the storage chamber of ventilation groove location, is rotatably covered cylinder, is made
Interior air channel is relative with other storage chambers, and new urea is chemically reacted with tail gas, without in urea reaction knot
Shu Hou, blast pipe is taken apart the urea changed in cover cylinder, and the setting enables tail gas and do not reacted in different storage chambers
Urea is reacted, while reaching preferable purified treatment effect, without the artificial urea for replacing cover cylinder, more facilitate,
With hommization.
In summary, the invention has the advantages that：
The 1st, tail gas clean-up structure is set on the first hush tube, tail gas is purified processing before discharge, it is to avoid tail gas is arranged
Surrounding environment is polluted after going out, meanwhile, the cage apertures on cover cylinder coordinates with the first sound attenuation hole on the first hush tube, plays double
The effect of weight noise elimination noise reduction；
2nd, tail gas can be reacted from the urea not reacted in different storage chambers, reach preferable purified treatment effect
Meanwhile, without the artificial urea for replacing cover cylinder, more facilitate, with hommization.
Brief description of the drawings
Fig. 1 is the exploded perspective view one of embodiment 1；
Fig. 2 is the structural representation of the first hush tube, the second hush tube and dividing plate in embodiment 1；
Fig. 3 is the exploded perspective view two of embodiment 1, the structure for embodying interior barrier cylinder and outer barrier cylinder；
Fig. 4 is the overall structure diagram of embodiment 1；
Fig. 5 is the diagrammatic cross-section of cover cylinder；
Fig. 6 is the exploded perspective view of embodiment 2.
In figure：1st, blast pipe；2nd, air inlet；3rd, gas outlet；4th, left chamber；5th, middle chamber；6th, right chamber room；7th, second eliminate the noise
Pipe；701st, noise elimination pipe portion；702nd, outlet pipe portion；703rd, the second sound attenuation hole；8th, the first hush tube；801st, right body；802nd, middle pipe
Body；803rd, left body；804th, the first sound attenuation hole；9th, dividing plate；10th, cover cylinder；1001st, cage apertures；1002nd, storage chamber；102nd, cavity；
11st, outer barrier cylinder；12nd, outer air channel；13rd, drive component；1301st, internal gear；1302nd, external gear；14th, knob；15th, it is annular
Groove；16th, connecting shaft；17th, angle index line；18th, interior barrier cylinder；1801st, interior air channel；19th, bearing；20th, pointer；21st, it is elastic
It is raised；22nd, rotary shaft；23rd, positioning hole.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Specific embodiment is only explanation of the invention, and it is not limitation of the present invention, those skilled in the art
The modification without creative contribution can be made to the present embodiment as needed after this specification is read, but as long as in this hair
All protected in bright right by Patent Law.
Embodiment 1：A kind of engine exhaust muffler, as shown in figures 1 and 3, including blast pipe 1, blast pipe 1 is including supplying
The air inlet 2 of tail gas turnover and gas outlet 3, air inlet 2 have two, and respectively positioned at the side at the two ends of blast pipe 1, gas outlet 3 has
One, positioned at one end end face of blast pipe 1；It is provided with two pieces of dividing plates being parallel to each other 9 in blast pipe 1, two pieces of dividing plates 9 are along exhaust
The inside of blast pipe 1 is divided into three chambers, respectively left chamber 4, middle chamber 5 by the length direction arrangement of pipe 1, two pieces of dividing plates 9
With right chamber room 6, wherein, left chamber 4 and right chamber room 6 are connected with two air inlets 2 respectively；
Be provided with two pieces of dividing plates 9 horizontal through the first hush tube 8, the first hush tube 8 includes interconnected left body
803rd, middle tube body 802 and right body 801, left body 803 are located in left chamber 4, and the left end sealing of left body 803, middle tube body
802 are located in middle chamber 5, and right body 801 is located in right chamber room 6, and the right-hand member sealing of right body 801；
The screwed hole through the both side surface of dividing plate 9 is offered on two pieces of dividing plates 9（Not shown in figure）, the two ends of middle tube body 802
The external screw thread coordinated with screwed hole screw thread is provided with, the connection of middle tube body 802 and two pieces of dividing plates 9 is realized；
The first sound attenuation hole 804 inside and outside the first hush tube 8 is provided through on first hush tube 8, the first sound attenuation hole 804 is distributed in
On left body 803, middle tube body 802 and right body 801, the first sound attenuation hole 804 and air inlet on left body 803 and right body 801
Mouth 2 is connected.
As shown in figure 1, being provided with second hush tube 7 parallel with the first hush tube 8, second on one of dividing plate 9
Hush tube 7 includes the noise elimination pipe portion 701 and outlet pipe portion 702 that are connected, and noise elimination pipe portion 701 is located in middle chamber 5, and its back to
One end sealing of outlet pipe portion 702, the side of noise elimination pipe portion 701 offers the second sound attenuation hole 703；Outlet pipe portion 702 is located at a left side
In chamber 4 or right chamber room 6, its one end is connected with gas outlet 3, and tail gas is entered inside blast pipe 1 by inlet port, and from left body
803 and right body 801 enter in the first hush tube 8.
As depicted in figs. 1 and 2, the cover cylinder 10 that coaxial line is sheathed on middle tube body 802, cover cylinder are rotatably connected on dividing plate 9
The cage apertures 1001 of cover 10 surfaces externally and internallies of cylinder is provided through on 10, cage apertures 1001 passes through for tail gas；With reference to shown in Fig. 5, cover cylinder 10
The cavity 102 connected with cage apertures 1001 is inside provided with, cavity 102 includes multiple along the circumferential upper arranged distribution storage of one week of cover cylinder 10
Chamber 1002 is deposited, the quantity of storage chamber 1002 is preferably four, and the urea as cleanser is filled in each storage chamber 1002,
It is separate between two neighboring storage chamber 1002 to exist.
As shown in figure 3, being provided with the interior barrier cylinder 18 extended along the length direction of middle tube body 802 between two pieces of dividing plates 9 and outer
Cylinder 11 is obstructed, interior barrier cylinder 18 and outer barrier cylinder 11 are coaxially placed on middle tube body 802, and cover cylinder 10 is located at interior barrier cylinder 18 and extrernal resistance
Between cylinder 11, and the outer surface of interior barrier cylinder 18 is fitted with the inner surface of cover cylinder 10, the inner surface and cover cylinder of outer barrier cylinder 11
10 outer surface laminating；
The outer air channel 12 between the first sound attenuation hole 804 and the second sound attenuation hole 703, interior barrier are provided with outer barrier cylinder 11
Offer interior air channel 1801 between the first sound attenuation hole 804 and the second sound attenuation hole 703 on cylinder 18, interior air channel 1801 with
Outer air channel 12 is relative, the tail gas come out by the first sound attenuation hole 804, sequentially passes through interior air channel 1801, the and of storage chamber 1002
Outer air channel 12, is then entered in noise elimination pipe portion 701 by the second sound attenuation hole 703.
As shown in figures 1 and 3, bearing 19 is provided with the dividing plate 9 in the left side of middle tube body 802, the coaxial line of bearing 19
It is enclosed on middle tube body 802, bearing 19 is rotated with one end of cover cylinder 10 and is connected, and the other end end face of cover cylinder 10 is provided with along cover cylinder 10
Run through on the connecting shaft 16 of dividing plate 9, dividing plate 9 annular groove 15 offered through the both sides side of dividing plate 9, annular groove on axis direction
15 annular shape for being shaped as 7/8ths, connecting shaft 16 moves in a circle in annular groove 15, and the ring core of annular groove 15 and
The shaft core of bearing 19 is on the axis of middle tube body 802；
As depicted in figs. 1 and 2, the drive component 13 of the rotation of driving cover cylinder 10 is provided with blast pipe 1, in the present embodiment, is driven
Dynamic component 13 includes intermeshing internal gear 1301 and external gear 1302, and internal gear 1301 is arranged on connecting shaft 16 away from right side
On the one end side of dividing plate 9, and it is coaxial fixed with connecting shaft 16；Rotary shaft 22, rotary shaft are coaxially arranged with external gear 1302
22 pass through blast pipe 1 after extend on the outer wall of blast pipe 1, the side wall rotation of rotary shaft 22 and blast pipe 1 is connected, and rotary shaft 22
The axis collinear of axis and bearing 19, internal gear 1301 can along in the circumference of external gear 1302 gear motion；
With reference to shown in Fig. 4, the knob 14 being fixed in rotary shaft 22 is provided with outside blast pipe 1, turning knob 14, rotary shaft 22 is entered
Row rotation；In the present embodiment, it is provided with the lateral wall of blast pipe 1 around the rotary shaft 22 axis angle index line of one week
17, the lateral surface of knob 14 is provided with along the radially extending pointer 20 of knob 14, the angle on the corresponding outer wall of blast pipe 1 of pointer 20
Graduation mark 17 is spent, angle index line 17 is used for the angle for showing that pointer 20 rotates.
The operation principle of the present embodiment：Tail gas is entered in left chamber 4 and right chamber room 6 by air inlet 2, passes through left body
803 and right body 801 on the first sound attenuation hole 804 enter in the first hush tube 8, then disappeared by second on middle tube body 802
Acoustic aperture 703 is discharged, and then by interior air channel 1801, storage chamber 1002 and outer air channel 12, into middle chamber 5, and is passed through
Second sound attenuation hole 703 is entered in the second hush tube 7 in noise elimination pipe portion 701, is then discharged by gas outlet 3, and tail gas is passing through
When in storage chamber 1002, the urea in storage chamber 1002 makes tail gas as catalyst, and in blast pipe 1 in the presence of high temperature
In HC, CO and particulate matter chemically reacted with oxygen, so that nontoxic water and carbon dioxide is generated, now, with tail gas
The urea of reaction is the part positioned at interior air channel 1801 and outer air channel 12, and other parts are then enclosed in interior barrier cylinder 18 and outer
Obstruct between cylinder 11, the rotatable knob 14 of workman makes rotary shaft 22 be slid in annular groove 15, so that the rotation of cover cylinder 10, makes
The Zhaotong position relative with inside and outside groove changes, so that responseless urea between interior barrier cylinder 18 and outer barrier cylinder 11
Particle is moved between inside and outside groove, proceeds chemical reaction.
Embodiment 2：A kind of engine exhaust muffler, as shown in fig. 6, difference from Example 1 is, in this implementation
In example, the side of knob 14 is provided with multiple arranged distribution positioning holes of one week 23 along in the circumference of knob 14, in the outer of blast pipe 1
The elastic bumps 21 with the location fit of positioning hole 23 are provided with wall；
In use, turn knob 14, can make elastic bumps 21 and diverse location on knob 14 positioning hole 23 carry out it is flexibly positioned
Coordinate.
Claims (8)
1. a kind of engine exhaust muffler, including blast pipe (1), the blast pipe (1) include air inlet (2) and gas outlet
(3) left chamber (4), middle chamber (5) and the right chamber room arranged along blast pipe (1) length direction, are provided with the blast pipe (1)
(6) left body (803) that and the first hush tube (8), first hush tube (8) includes being located in left chamber (4), positioned at the right side
Right body (801) in chamber (6) and the middle tube body (802) positioned at middle chamber (5), the left body (803), right body
(801) and on middle tube body (802) it is provided with the first sound attenuation hole (804), the middle chamber (5) and is provided with and gas outlet (3)
The second sound attenuation hole in middle chamber (5) is provided with the second hush tube (7) of connection, second hush tube (7)
(703), it is characterised in that：The left chamber (4) and right chamber room (6) are connected with air inlet (2), are set in the middle chamber (5)
It is equipped with the cage apertures being provided through on the cover cylinder (10) being sheathed on middle tube body (802), the cover cylinder (10) inside and outside cover cylinder (10)
(1001) cavity of filling urea, is provided with the cover cylinder (10)（102）, the cavity（102）Connected with cage apertures (1001).
2. engine exhaust muffler according to claim 1, it is characterised in that：The cavity（102）Including multiple edges
Arranged distribution and the storage chamber of separate presence (1002) in cover cylinder (10) circumference.
3. engine exhaust muffler according to claim 1, it is characterised in that：The side of the middle chamber (5) is set
Have and rotate the bearing (19) being connected with cover cylinder (10) one end, one end end face of the cover cylinder (10) is provided through to middle chamber
(5) offered on connecting shaft (16) outside, the side of the middle chamber (5) and slide the annular groove coordinated with connecting shaft (16)
(15), the ring core of the annular groove (15) and the shaft core of bearing (19) are on the axis of middle tube body (802), the blast pipe
(1) drive connection axle (16) sliding is provided with to drive the drive component (13) of cover cylinder (10) rotation.
4. engine exhaust muffler according to claim 3, it is characterised in that：The drive component (13) includes coaxial
It is fixed on the internal gear (1301) of rotary shaft (22) one end, the external gear (1302) being rotationally connected with blast pipe (1) inwall, institute
External gear (1302) is stated to be meshed with internal gear (1301).
5. engine exhaust muffler according to claim 4, it is characterised in that：It is coaxially solid on the external gear (1302)
Surely have to rotate with blast pipe (1) side wall and driving rotary shaft (22) is provided with outside the rotary shaft (22) being connected, the blast pipe (1) certainly
The knob (14) turned.
6. engine exhaust muffler according to claim 5, it is characterised in that：The lateral wall of the blast pipe (1) is set
It is equipped with the angle index line (17) circumferentially around rotary shaft (22) edge, the knob (14) and is provided with for calculating knob
(14) pointer (20) of the anglec of rotation.
7. engine exhaust muffler according to claim 5, it is characterised in that：Set on the side of the knob (14)
There is the positioning hole (23) of multiple arranged distributions along in knob (14) circumference, the lateral wall of the blast pipe (1) is provided with and positioned
The elastic bumps (21) of hole (23) location fit.
8. the engine exhaust muffler according to claim 3 or 4, it is characterised in that：It is provided with the middle chamber (5)
The interior barrier cylinder (18) of coaxial line and outer barrier cylinder (11), the outer surface of the interior barrier cylinder (18) and the inner surface of cover cylinder (10)
Laminating, the inner surface of the outer barrier cylinder (11) is fitted with the outer surface of cover cylinder (10), is provided with the outer barrier cylinder (11)
Offered on outer air channel (12) between the first sound attenuation hole (804) and the second sound attenuation hole (703), interior barrier cylinder (18) with
The relative interior air channel (1801) of outer air channel (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710455404.3A CN107269346B (en) | 2017-06-16 | 2017-06-16 | Engine exhaust muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710455404.3A CN107269346B (en) | 2017-06-16 | 2017-06-16 | Engine exhaust muffler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107269346A true CN107269346A (en) | 2017-10-20 |
| CN107269346B CN107269346B (en) | 2019-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710455404.3A Active CN107269346B (en) | 2017-06-16 | 2017-06-16 | Engine exhaust muffler |
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| CN (1) | CN107269346B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594393A (en) * | 2019-09-18 | 2019-12-20 | 湖北威能达传动有限责任公司 | Wheel set axle gear box |
| CN110588868A (en) * | 2019-10-28 | 2019-12-20 | 浙江春风动力股份有限公司 | Straddle type vehicle and engine arrangement structure thereof |
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| EP1357267B1 (en) * | 2002-04-24 | 2005-11-16 | J. Eberspächer GmbH Co. KG | Exhaust gas treating apparatus with silencer for a diesel engine |
| CN201902248U (en) * | 2010-11-24 | 2011-07-20 | 湖北通达股份有限公司 | Diesel engine automobile postprocessor |
| CN202100301U (en) * | 2011-06-10 | 2012-01-04 | 十堰沃尔汽车零部件有限公司 | Postprocessor of automobile tail gas |
| CN102410069A (en) * | 2011-11-24 | 2012-04-11 | 杭州银轮科技有限公司 | SCR (Selective Catalytic Reduction) catalytic conversion muffler |
| CN205064051U (en) * | 2015-09-16 | 2016-03-02 | 苏州添蓝动力科技有限公司 | SCR catalysis mixing arrangement for muffler |
| CN106337714A (en) * | 2016-08-31 | 2017-01-18 | 郑州精益达汽车零部件有限公司 | Nozzle-integrated SCR catalytic muffler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110594393A (en) * | 2019-09-18 | 2019-12-20 | 湖北威能达传动有限责任公司 | Wheel set axle gear box |
| CN110588868A (en) * | 2019-10-28 | 2019-12-20 | 浙江春风动力股份有限公司 | Straddle type vehicle and engine arrangement structure thereof |
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