CN206487542U - A kind of commercial car catalytic muffler assembly - Google Patents
A kind of commercial car catalytic muffler assembly Download PDFInfo
- Publication number
- CN206487542U CN206487542U CN201621476861.8U CN201621476861U CN206487542U CN 206487542 U CN206487542 U CN 206487542U CN 201621476861 U CN201621476861 U CN 201621476861U CN 206487542 U CN206487542 U CN 206487542U
- Authority
- CN
- China
- Prior art keywords
- casing
- chamber
- catalytic
- air inlet
- tube
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model is related to a kind of commercial car catalytic muffler assembly, and it includes casing, catalyst unit, muffling unit, dividing plate, intake noise reduction pipe, NOx sensor, preceding temperature sensor and rear temperature sensor；The front end outer side wall of casing, which is provided with the downside of air inlet tube, rear end end, is provided with vent connection；Air inlet tube and vent connection are protruded out to casing outside；The inner chamber of casing located at the inner chamber of casing and is divided into hybrid chamber, catalytic chamber and noise elimination cavity by dividing plate vertically；Intake noise reduction pipe is in the hybrid chamber of casing；Catalyst unit is arranged in the catalytic chamber of casing；Muffling unit is arranged in the noise elimination cavity of casing；NOx sensor is installed in the noise elimination cavity of casing；Preceding temperature sensor is installed on air inlet tube；Temperature sensor is installed in the catalytic chamber of casing afterwards；The utility model structure design is simple, reasonable, can improve ureaclastic distance, urea is fully decomposed and can prevent urea crystals, catalytic reaction efficiency high, sound-deadening and noise-reducing effect is good.
Description
Technical field
The utility model is related to commercial car Diesel engine NOx emission post-processing technology field, and in particular to a kind of commercial
Car catalytic muffler assembly.
Background technology
To promote motor vehicle pollution emission reduction, improve atmosphere quality, implement《People's Republic of China's prevention and control of air pollution
Method》, automobile pollution is strictly controlled, is implemented in full《Light-duty vehicle pollutant emission limit and measuring method (Chinese 5th rank
Section)》(GB18352.5-2013) and《Automobile-used compression-ignited, gaseous fuel spark-ignition engine and automobile exhaust pollutant discharge are limited
Value and measuring method (Chinese III, IV, V stage)》(GB17691-2005) requirement of the 5th stage emission standard, automobile-used compression ignition in
Formula engine has to comply with the requirement of the standard of state five with automobile.Vehicle space arrangement requirement：The air inlet pipe of catalytic muffler is located at
On the housing of end face, nozzle is integrated on casing or on the air inlet of casing, it is desirable to this side close to end face enters,
Nozzle integrated form post-processor assembly, meets the Abgasgesetz of state five, vehicle and passes through noise and reliable life requirement.It is original to urge
The change silencer urea reaction time is short, mixes uneven with exhaust；The double-deck hush tube of increase or mixing arrangement, cause back pressure liter
It is high.
The content of the invention
In view of the above-mentioned problems, simple, rationally the utility model proposes a kind of structure design, can improve it is ureaclastic away from
From making urea fully decompose and urea crystals can be prevented, catalytic reaction efficiency high, the good commercial car of sound-deadening and noise-reducing effect is urged
Change muffler ASSY.
The technical solution of the utility model is as follows：
Above-mentioned commercial car catalytic muffler assembly, including casing, the catalyst unit in the casing and list of eliminating the noise
Member；The front end outer side wall of the casing, which is provided with the downside of air inlet tube, rear end end, is provided with vent connection；The air inlet tube and row
Gas adapter is protruded out to casing outside；The catalytic muffler assembly also include dividing plate, intake noise reduction pipe, NOx sensor,
Preceding temperature sensor and rear temperature sensor；The dividing plate located at the inner chamber of the casing and divides the inner chamber of the casing vertically
It is segmented into hybrid chamber, catalytic chamber and noise elimination cavity；The dividing plate includes preceding dividing plate and rear bulkhead；Casing described in the intake noise reduction pipe
In hybrid chamber, sound attenuation hole is locally laid with its lower end tube wall, upper end is docked with air inlet tube matching；The catalyst unit
In the catalytic chamber for being arranged at the casing, it is by carrier steel bushing, the carrier being installed on inside the carrier steel bushing and is located in
Pad composition between the carrier steel bushing and carrier；The carrier steel bushing rear and front end be each passed through the preceding dividing plate and after every
Plate；Meanwhile, the preceding dividing plate is additionally provided with deflector on the downside of the rear port positioned at the carrier steel bushing；The deflector is located at institute
State in the hybrid chamber of casing；The muffling unit is arranged in the noise elimination cavity of the casing, and it includes rear hush tube, is sheathed on institute
State the high-frequency tube outside rear hush tube and the glass fibre being located between the rear hush tube and high-frequency tube；Eliminated the noise after described
The rear end matching docking vent connection of pipe, front end is through the rear bulkhead and stretches into the catalytic chamber of the casing；It is described
NOx sensor is installed in the noise elimination cavity of the casing, and its one end is stretched into inside the noise elimination cavity of the casing, and the other end stretches out described
On the outside of casing；The preceding temperature sensor is installed on the air inlet tube, and its one end is stretched into the air inlet tube, the other end
Stretch out on the outside of the air inlet tube；The rear temperature sensor is installed in the catalytic chamber of the casing, and its one end stretches into described urge
Change intracavitary, the other end is stretched out on the outside of the casing.
The commercial car catalytic muffler assembly, wherein：The rear hush tube is horizontally placed on the noise elimination cavity of the casing
It is interior and on the downside of the catalyst unit；The high-frequency tube is with the rear hush tube is through the rear bulkhead and stretches into described
In the catalytic chamber of casing.
The commercial car catalytic muffler assembly, wherein：The lateral wall of the air inlet tube is additionally provided with urea nozzle.
The commercial car catalytic muffler assembly, wherein：The rear end end of the casing is also equipped with rear end cap.
Beneficial effect：
Commercial car catalytic muffler assembly structure design of the present invention is simple, reasonable, and former design air inlet pipe is only stretched into
Preprocessor, or the double-deck hush tube of setting in air inlet pipe；The present invention be by extending air inlet pipe, improve it is ureaclastic away from
From making urea fully decompose and urea crystals can be prevented；Pass through the distribution and mixing of the lower end sound attenuation hole of intake noise reduction pipe
The design of intracavitary deflector, can make the ammonia uniformity coefficient into carrier reach more than 95%, at low temperature with higher anti-
Answer efficiency, wider Process window；Urea nozzle is located on air inlet tube, belongs to the design of integrated nozzle formula；Preceding temperature sensor
It is arranged on air inlet tube, can correctly reflects catalytic muffler intake air temperature；Temperature sensor is installed in the catalysis of casing afterwards
On chamber, can correctly reflect through and carrier after gas temperature；And in the design of noise elimination noise reduction, add a noise elimination cavity and
Arrange that high-frequency tube improves sound-deadening and noise-reducing effect on vent connection.The utility model is applied to east wind DCI and YC6MK engine institute
There is the emission aftertreatment of horsepower section, under all operating modes of engine, NOx conversion efficiency reaches more than 85%, insertion loss 20Db
(A), exhaust back pressure 10.8kPa, power loss 0.96% is satisfied by the discharge standard of GB/T17691-2005 states five and HJ 451-
The requirement of 2008 standards.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model commercial car catalytic muffler assembly；
Fig. 2 is another structural representation of the utility model commercial car catalytic muffler assembly；
Fig. 3 is the internal structure schematic diagram of the utility model commercial car catalytic muffler assembly.
Embodiment
As shown in Figures 1 to 3, the utility model commercial car catalytic muffler assembly, including casing 1, dividing plate 2, intake noise reduction
Pipe 3, catalyst unit 4, muffling unit 5, NOx sensor 6, preceding temperature sensor 7 and rear temperature sensor 8, urea nozzle 9.
The inside of casing 1 has accommodating cavity, and its forward end is provided with drive end bearing bracket 11, and front end outer side wall is provided with air inlet tube
12, rear end end downside is provided with vent connection 13；The air inlet tube 12 and vent connection 13 are protruded out to the outside of outer case 1, should
The outer wall of air inlet tube 12 is additionally provided with urea nozzle 9.
The dividing plate 2 is located at the inner chamber of the casing 1, and it includes preceding dividing plate 21 and rear bulkhead 22；Wherein, the preceding dividing plate 21 is with after
Dividing plate 22 is located at the inner chamber of the casing 1 vertically, and the inner chamber of the casing 1 is divided into three independent chambers i.e. including hybrid chamber
14th, catalytic chamber 15 and noise elimination cavity 16.
The intake noise reduction pipe 3 is vertically arranged in the hybrid chamber 14 of the casing 1, and regional area is laid with its lower end tube wall
Sound attenuation hole 31 and other regions are aporate area 32, and upper end matches with air inlet tube 12 and docked.
The catalyst unit 4 is arranged in the catalytic chamber 15 of the casing 1, its by carrier steel bushing, be installed on inside carrier steel bushing
Carrier and be located between carrier steel bushing and carrier pad composition；Wherein, two before and after the carrier steel bushing of the catalyst unit 4
Dividing plate 21 and rear bulkhead 22 before end is each passed through；Meanwhile, rear port of the preceding dividing plate 22 in the carrier steel bushing positioned at catalyst unit 4
Downside is additionally provided with deflector 211, and the distributing homogeneity of ammonia can be improved by deflector 211.
The muffling unit 5 is arranged in the noise elimination cavity 16 of the casing 1, and it includes rear hush tube 51, high-frequency tube 52 and glass
Fiber 53；Wherein, the rear hush tube 51 is horizontally placed in the noise elimination cavity 15 of casing 1 and rear end is matched pair with vent connection 13
Connect, the front end of the rear hush tube 51 is passed through in the catalytic chamber 14 that casing 1 is stretched into after rear bulkhead 22 and positioned at the downside of catalyst unit 4；
The high-frequency tube 52 is sheathed on the rear outside of hush tube 51 and then hush tube 51 stretches into urging for casing 1 after passing through rear bulkhead 22 together
Change in chamber 14；The glass fibre 53 is located between the rear hush tube 51 and high-frequency tube 52.After air-flow outflow carrier, after
Dividing plate 21, returns to catalytic chamber 14, due to being provided with high-frequency tube 52 outside rear hush tube 51, in rear hush tube 51 and high-frequency tube 52
Between be provided with glass fibre 53, the sound deadening capacity of high frequency can be improved.
The NOx sensor 6 is installed in the noise elimination cavity 15 of the casing 1, and its one end is stretched into inside the noise elimination cavity 15 of casing 1, separately
The outside of casing 1 is stretched out in one end.
The preceding temperature sensor 7 is installed on the air inlet tube 12 of the casing 1, and its one end is stretched into air inlet tube 12,
The other end stretches out the outside of air inlet tube 12, can accurately react the change of intake air temperature.
The rear temperature sensor 8 is installed in the larger catalytic chamber 14 of the internal gas flow velocity of the casing 1, and its one end is stretched into
In catalytic chamber 14, the other end stretches out the outside of casing 1, correctly to feed back temperature after carrier, can reduce the consumption of urea.
The utility model structure design is simple, reasonable, can improve ureaclastic distance, urea is fully decomposed and can be prevented
Urea crystals are only produced, catalytic reaction efficiency high, sound-deadening and noise-reducing effect is good.
Claims (4)
1. a kind of commercial car catalytic muffler assembly, including casing, catalyst unit and muffling unit in the casing；Institute
The front end outer side wall for stating casing is provided with the downside of air inlet tube, rear end end provided with vent connection；The air inlet tube and exhaust connect
Protruded out on the outside of casing described in Guan Junxiang；It is characterized in that：The catalytic muffler assembly also includes dividing plate, intake noise reduction pipe, NOx
Sensor, preceding temperature sensor and rear temperature sensor；
The inner chamber of the casing located at the inner chamber of the casing and is divided into hybrid chamber, catalytic chamber and noise elimination by the dividing plate vertically
Chamber；The dividing plate includes preceding dividing plate and rear bulkhead；
Described in the intake noise reduction pipe in the hybrid chamber of casing, be locally laid with sound attenuation hole on its lower end tube wall, upper end with it is described
Air inlet tube matching docking；
The catalyst unit is arranged in the catalytic chamber of the casing, its by carrier steel bushing, be installed on inside the carrier steel bushing
Carrier and be located between the carrier steel bushing and carrier pad composition；The carrier steel bushing rear and front end is each passed through
The preceding dividing plate and rear bulkhead；Meanwhile, the preceding dividing plate is additionally provided with deflector on the downside of the rear port positioned at the carrier steel bushing；
The deflector is located in the hybrid chamber of the casing；
The muffling unit is arranged in the noise elimination cavity of the casing, and it includes rear hush tube, is sheathed on outside the rear hush tube
The high-frequency tube in portion and the glass fibre being located between the rear hush tube and high-frequency tube；The rear end matching of the rear hush tube
The vent connection is docked, front end is through the rear bulkhead and stretches into the catalytic chamber of the casing；
The NOx sensor is installed in the noise elimination cavity of the casing, and its one end is stretched into inside the noise elimination cavity of the casing, the other end
Stretch out on the outside of the casing；
The preceding temperature sensor is installed on the air inlet tube, and its one end is stretched into the air inlet tube, and the other end stretches out
On the outside of the air inlet tube；
The rear temperature sensor is installed in the catalytic chamber of the casing, and its one end is stretched into the catalytic chamber, and the other end stretches out
On the outside of the casing.
2. commercial car catalytic muffler assembly as claimed in claim 1, it is characterised in that：The rear hush tube is horizontally placed on
In the noise elimination cavity of the casing and on the downside of the catalyst unit；The high-frequency tube is with the rear hush tube described in
Rear bulkhead is simultaneously stretched into the catalytic chamber of the casing.
3. commercial car catalytic muffler assembly as claimed in claim 1, it is characterised in that：The lateral wall of the air inlet tube is also
Provided with urea nozzle.
4. commercial car catalytic muffler assembly as claimed in claim 1, it is characterised in that：Also pacify the rear end end of the casing
Equipped with rear end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621476861.8U CN206487542U (en) | 2016-12-30 | 2016-12-30 | A kind of commercial car catalytic muffler assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621476861.8U CN206487542U (en) | 2016-12-30 | 2016-12-30 | A kind of commercial car catalytic muffler assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206487542U true CN206487542U (en) | 2017-09-12 |
Family
ID=59770198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621476861.8U Expired - Fee Related CN206487542U (en) | 2016-12-30 | 2016-12-30 | A kind of commercial car catalytic muffler assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206487542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779557A (en) * | 2020-07-07 | 2020-10-16 | 无锡威孚力达催化净化器有限责任公司 | Structure for improving accuracy of box type post-treatment oxynitride measuring point |
-
2016
- 2016-12-30 CN CN201621476861.8U patent/CN206487542U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779557A (en) * | 2020-07-07 | 2020-10-16 | 无锡威孚力达催化净化器有限责任公司 | Structure for improving accuracy of box type post-treatment oxynitride measuring point |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202690174U (en) | Purifying muffler assembly | |
| CN206487542U (en) | A kind of commercial car catalytic muffler assembly | |
| CN206190370U (en) | Integrated form diesel vehicle catalytic muffler assembly | |
| CN201184226Y (en) | Automobile energy-saving silencer | |
| CN106337714A (en) | Nozzle-integrated SCR catalytic muffler | |
| CN111550301B (en) | Nozzle type catalytic silencer for automobile diesel engine | |
| CN210948839U (en) | Combined automobile silencing exhaust pipe structure | |
| CN105569772A (en) | Silencer of exhaust system of motorcycle | |
| CN210799103U (en) | Nozzle integrated SCR aftertreatment urea mixing arrangement | |
| CN202431338U (en) | Catalytic conversion muffler of diesel engine | |
| CN202250314U (en) | SCR (Selective Catalytic Reduction) purification and sound-silencing device capable of quickly igniting | |
| CN106285874A (en) | A kind of compound muffler for vehicle | |
| CN101666256B (en) | Diesel SCR catalytic muffler | |
| CN205297700U (en) | Integrated form SCR catalysis silencer | |
| CN203230480U (en) | Silencer noise abatement unit and silencer using noise abatement unit | |
| CN216288535U (en) | Intercooler device with silencing function and fuel cell system | |
| CN202768127U (en) | Automobile silencer | |
| CN104196602A (en) | Automobile discharge postprocessor assembly | |
| CN103114888A (en) | Noise elimination unit of silencer and silencer using noise elimination unit | |
| CN205400927U (en) | Motorcycle advances exhaust system | |
| CN205400853U (en) | Motorcycle exhaust system's silencer | |
| CN208831072U (en) | A kind of commercial vehicle tail-gas after treatment apparatus | |
| KR200468069Y1 (en) | Sub muffler structure of vehicles | |
| CN206917703U (en) | A kind of automobile catalytic muffler assembly | |
| CN210622892U (en) | Commercial vehicle postprocessor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170912 Termination date: 20191230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |