CN104929739A - Integrated purification silencer for single cylinder diesel - Google Patents
Integrated purification silencer for single cylinder diesel Download PDFInfo
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- CN104929739A CN104929739A CN201510392115.4A CN201510392115A CN104929739A CN 104929739 A CN104929739 A CN 104929739A CN 201510392115 A CN201510392115 A CN 201510392115A CN 104929739 A CN104929739 A CN 104929739A
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- cylinder diesel
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- 230000003584 silencer Effects 0.000 title abstract description 5
- 238000000746 purification Methods 0.000 title abstract 4
- 239000003054 catalyst Substances 0.000 claims abstract description 41
- 239000010425 asbestos Substances 0.000 claims abstract description 10
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 10
- 230000004888 barrier function Effects 0.000 claims description 27
- 238000009434 installation Methods 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 abstract 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 230000008030 elimination Effects 0.000 description 7
- 238000003379 elimination reaction Methods 0.000 description 7
- 230000030279 gene silencing Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to a single cylinder diesel, in particular to an integrated purification silencer for the single cylinder diesel, and belongs to the technical field of silencers. The integrated purification silencer for the single cylinder diesel comprises a housing, a porous gas inlet pipe is arranged in a gas inlet chamber, the pipe wall of the porous gas inlet pipe is fixed on the housing, and the front end of the porous gas inlet pipe stretches into the gas inlet chamber. The front end of the porous gas inlet pipe is closed, and a plurality of gas inlet pipe through holes are formed in the side wall of the porous gas inlet pipe. A porous partition plate is provided with a plurality of partition plate through holes. A catalyst is mounted in a catalyst mounting chamber, the front end and the rear end of the catalyst are fixed through a front positioning plate and a rear positioning plate, and an asbestos insulating layer is arranged between the catalyst mounting chamber and the housing. According to the integrated purification silencer for the single cylinder diesel, when tail gas flows through the catalyst after passing through the through holes of the porous gas inlet pipe and the through holes of the porous partition plate, the homogeneity is good, the service efficiency of the catalyst is greatly improved, and the service life of the catalyst is greatly prolonged.
Description
Technical field
The present invention relates to a kind of single cylinder diesel, a kind of single cylinder diesel integral type purifying muffler, belongs to silencing apparatus technical field specifically.
Background technique
Single cylinder diesel manufacturing enterprise of China is numerous, single cylinder diesel recoverable amount and Annual output large.According to industry statistic, national single cylinder diesel Annual output in 2014 reaches 8,550,000 totally 10,900 ten thousand kW, accounts for nearly 40% of national diesel engine gross production by power meter.It is supporting that single cylinder diesel is mainly the products such as various microtractor, low-speed cars, boat tractor, small-sized cargo ship and small fishing vessel, irrigation and drainage and sprinkling machine, agricultrue sideline production processing machinery, garden plant protection machinery, small engineering machinery and small power generation unit, played extremely important effect in industrial and agricultural production.
Emission problem is still one of major issue of the needs solution that internal-combustion engine faces at present.Environmental pollution problem was on the rise in the last few years; in all kinds of pollution sources; the diesel engine of various uses is important constituent element; for this reason; for diesel engine used not on road, Environmental Protection Department and State Administration for Quality Supervision and Inspection and Quarantine have issued the NBS of GB20891-2014 " non-rice habitats mechanically moving exhausted pollutant of diesel engine emission limit and method of measurement (third and fourth stage of China) " on May 16th, 2014.Non-rice habitats diesel engine phase III emission limit has added sternly the limit value of each pollutant further, it is a huge challenge that this simple for structure, with low cost and new technology uses for limited small power single cylinder diesel, extremely urgent to the technology upgrading of small power single cylinder diesel.
Exhaust aftertreatment is applied to internal-combustion engine industry widely as the technological approaches of a kind of effective reduction motor exhaust pollutant emission.Traditional small-power single-cylinder diesel engine silencer generally only has noise elimination effect, and general vehicular engine is silencing apparatus and catalyst converter existed as two separate parts.Inventor considers the feature that small power single cylinder diesel structure space is limited and with low cost, analyzes and researches to acoustic wave filter structure and catalyst converter carrier, for the design proposing integral type purifying muffler of small-sized single cylinder diesel engine novelty.This design can on the basis not changing former machine silencing apparatus form structure parameter, the noise elimination effect of former silencing apparatus can be met, the requirement that small power single cylinder diesel installs catalyst converter additional can be met again, for the discharge of small power single cylinder diesel reply state three provides effective and feasible approach.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, thus a kind of single cylinder diesel integral type purifying muffler is provided, tail gas stream uniformity when catalyst converter is good, significantly improve utilization efficiency and the life-span of catalyzer, on the basis not changing former machine silencing apparatus form structure parameter, the noise elimination effect of former silencing apparatus can be met, the requirement that small power single cylinder diesel installs catalyst converter additional can be met again.
According to technological scheme provided by the invention, single cylinder diesel integral type purifying muffler comprises case, in case, middle part arranges porous barrier, case inner chamber is from left to right separated into suction chamber, plenum, catalyst converter installation room and discharge chamber by porous barrier successively, it is characterized in that: in suction chamber, be provided with porous suction tude, porous suction tude tube wall is fixed on case, and porous suction tude front end is stretched in suction chamber; Described porous suction tude front end is closed, and the sidewall of porous suction tude is provided with the perforation of multiple suction tude towards porous barrier side; Described porous barrier is provided with the perforation of multiple dividing plate; Catalyst converter installs indoor location catalyst converter, and catalyst converter front end and back end is fixed by prelocalization plate and rear position plate, is provided with asbestos thermal insulation layer between catalyst converter installation room and case; Case is provided with steam outlet pipe, and steam outlet pipe the inner is communicated with discharge chamber.
Further, multiple suction tude perforation is uniformly distributed, and the piercing aperture of suction tude perforation increases along porous suction tude front end backward gradually.
Further, from center, outside radiation is uniformly distributed in multiple dividing plate perforation.
Further, porous barrier is provided with stair-stepping baffle plate diversion end face towards suction chamber one end.
Further, the internal end surface of steam outlet pipe flushes with case internal end surface.
Further, porous suction tude, porous barrier and catalyst converter installation room are all positioned at the central position of case.
Compared with the prior art the present invention has the following advantages:
Structure of the present invention is simple, compact, reasonable, and crushing is moderate, noise elimination effect is better, with low cost; It is good that tail gas flows through catalyst converter uniformity after the perforation of porous suction tude and the perforation of porous barrier, significantly improves utilization efficiency and the life-span of catalyzer; The baffle plate diversion end face of porous barrier has guide functions, improves the uniformity of tail gas; Asbestos thermal insulation layer is provided with between catalyst converter installation room and case, asbestos thermal insulation layer can reduce the spilling of exhaust temperature, effective solution single cylinder diesel delivery temperature is low, and Part load exhaust temperature, lower than the problem of the minimum initiation temperature of catalyzer, effectively promotes the operating range of catalyzer; The internal end surface of steam outlet pipe flushes with case internal end surface, effectively can reduce the flow resistance of tail gas discrepancy discharge chamber; Porous suction tude, porous barrier and catalyst converter installation room are all positioned at the central position of case, and such layout makes the flowing of tail gas more smooth and easy.
Accompanying drawing explanation
Fig. 1 is plan view of the present invention.
Fig. 2 is plan view of the present invention.
Fig. 3 is porous air feeder structure figure.
Fig. 4 is porous barrier structural drawing.
Description of reference numerals: the perforation of 1-suction chamber, 2-porous suction tude, 3-porous barrier, 4-plenum, 5-prelocalization plate, 6-catalyst converter installation room, 7-asbestos thermal insulation layer, 8-rear position plate, 9-steam outlet pipe, 10-discharge chamber, 11-case, 12-suction tude, the perforation of 13-dividing plate, 14-baffle plate diversion end face.
Embodiment
Embodiment in is by reference to the accompanying drawings further described by the present invention below:
As shown in Figure 1 and 2, the present invention mainly comprises case 11, and in case 11, middle part arranges porous barrier 3, and case 11 inner chamber is from left to right separated into suction chamber 1, plenum 4, catalyst converter installation room 6 and discharge chamber 10 by porous barrier 3 successively.
Be provided with porous suction tude 2 in suction chamber 1, porous suction tude 2 tube wall is fixed on case 11, and porous suction tude 2 front end is stretched in suction chamber 1.As shown in Figure 3, described porous suction tude 2 front end is closed, the sidewall of porous suction tude 2 is provided with multiple suction tude perforation 12 towards porous barrier 3 side, multiple suction tude perforation 12 is uniformly distributed, and the piercing aperture of suction tude perforation 12 increases along porous suction tude 2 front end backward gradually.Suction tude 12 such structures of boring a hole are conducive to tail gas and enter suction chamber 1 more uniformly, can play certain leading role, also serve certain noise elimination effect to exhaust gas flow.
As shown in Figure 4, described porous barrier 3 is provided with multiple dividing plate perforation 13, and from center, outside radiation is uniformly distributed in multiple dividing plate perforation 13.The distributed architecture of multiple dividing plate perforation 13 is conducive to tail gas and enters plenum 4 more uniformly.Porous barrier 3 is provided with stair-stepping baffle plate diversion end face 14 towards suction chamber 1 one end, stepped design can play certain leading role to tail gas, being conducive to air-flow entering in catalyst converter installation room 6 being uniformly distributed of tail gas fluid of exhaust, also serving certain noise elimination effect.
Install catalyst converter in catalyst converter installation room 6, catalyst converter front end and back end is fixed by prelocalization plate 5 and rear position plate 8.Asbestos thermal insulation layer 7 is provided with between catalyst converter installation room 6 and case 11, asbestos thermal insulation layer 7 can reduce the spilling of exhaust temperature, effective solution single cylinder diesel delivery temperature is low, and Part load exhaust temperature, lower than the problem of the minimum initiation temperature of catalyzer, effectively promotes the operating range of catalyzer.
Case 11 is provided with steam outlet pipe 9, and steam outlet pipe 9 the inner is communicated with discharge chamber 10, and the internal end surface of steam outlet pipe 9 flushes with case 11 internal end surface, effectively can reduce the flow resistance of tail gas discrepancy discharge chamber.
Described porous suction tude 2, porous barrier 3 and catalyst converter installation room 6 are all positioned at the central position of case 11, and such layout makes the flowing of tail gas more smooth and easy.
Working principle of the present invention is as follows: diesel engine vent gas enters porous suction tude, suction chamber is entered by the perforation in porous suction tude, air-flow enters in suction chamber and enters plenum by the perforation on porous barrier after recombination, air-flow enters after entering and again reconfiguring in plenum in catalyst converter installation room and reacts with wherein catalyzer, and air-flow is out finally entered discharge chamber from catalyst converter end and discharged by steam outlet pipe.
By a kind of single cylinder diesel integral type purifying muffler of the present invention's design, the test result on 186F diesel engine shows: complete machine fills silencing apparatus brake specific exhaust emission measured value CO, HC, NO of former machine catalyst-free
x6.43,1.56,4.94 and 0.56 g (kWh) is respectively with PM
-1, use integral type purifying muffler (use oxidation catalyst) brake specific exhaust emission measured value CO, HC, NO
x0.94,0.46,4.76 and 0.43 g (kWh) is dropped to respectively with PM
-1, Be very effective achieves satisfied effect, reaches the target of maiden trial result far below phase III emission limit.
Structure of the present invention is simple, compact, reasonable, and crushing is moderate, noise elimination effect is better, with low cost; It is good that tail gas flows through catalyst converter uniformity after the perforation of porous suction tude and the perforation of porous barrier, significantly improves utilization efficiency and the life-span of catalyzer; The baffle plate diversion end face of porous barrier has guide functions, improves the uniformity of tail gas; Asbestos thermal insulation layer is provided with between catalyst converter installation room and case, asbestos thermal insulation layer can reduce the spilling of exhaust temperature, effective solution single cylinder diesel delivery temperature is low, and Part load exhaust temperature, lower than the problem of the minimum initiation temperature of catalyzer, effectively promotes the operating range of catalyzer; The internal end surface of steam outlet pipe flushes with case internal end surface, effectively can reduce the flow resistance of tail gas discrepancy discharge chamber; Porous suction tude, porous barrier and catalyst converter installation room are all positioned at the central position of case, and such layout makes the flowing of tail gas more smooth and easy.
Claims (6)
1. a single cylinder diesel integral type purifying muffler, comprise case (11), in case (11), middle part arranges porous barrier (3), case (11) inner chamber is from left to right separated into suction chamber (1), plenum (4), catalyst converter installation room (6) and discharge chamber (10) by porous barrier (3) successively, it is characterized in that: in suction chamber (1), be provided with porous suction tude (2), porous suction tude (2) tube wall is fixed on case (11), and porous suction tude (2) front end is stretched in suction chamber (1); Described porous suction tude (2) front end is closed, and the sidewall of porous suction tude (2) is provided with multiple suction tude perforation (12) towards porous barrier (3) side; Described porous barrier (3) is provided with multiple dividing plate perforation (13); Install catalyst converter in catalyst converter installation room (6), catalyst converter front end and back end is fixed by prelocalization plate (5) and rear position plate (8), is provided with asbestos thermal insulation layer (7) between catalyst converter installation room (6) and case (11); Case (11) is provided with steam outlet pipe (9), and steam outlet pipe (9) the inner is communicated with discharge chamber (10).
2. single cylinder diesel integral type purifying muffler as claimed in claim 1, is characterized in that: described multiple suction tude perforation (12) is uniformly distributed, and the piercing aperture of suction tude perforation (12) increases along porous suction tude (2) front end backward gradually.
3. single cylinder diesel integral type purifying muffler as claimed in claim 1, is characterized in that: from center, outside radiation is uniformly distributed described multiple dividing plate perforation (13).
4. single cylinder diesel integral type purifying muffler as claimed in claim 1, is characterized in that: described porous barrier (3) is provided with stair-stepping baffle plate diversion end face (14) towards suction chamber (1) one end.
5. single cylinder diesel integral type purifying muffler as claimed in claim 1, is characterized in that: the internal end surface of described steam outlet pipe (9) flushes with case (11) internal end surface.
6. single cylinder diesel integral type purifying muffler as claimed in claim 1, is characterized in that: described porous suction tude (2), porous barrier (3) and catalyst converter installation room (6) are all positioned at the central position of case (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510392115.4A CN104929739A (en) | 2015-07-06 | 2015-07-06 | Integrated purification silencer for single cylinder diesel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510392115.4A CN104929739A (en) | 2015-07-06 | 2015-07-06 | Integrated purification silencer for single cylinder diesel |
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| Publication Number | Publication Date |
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| CN104929739A true CN104929739A (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510392115.4A Pending CN104929739A (en) | 2015-07-06 | 2015-07-06 | Integrated purification silencer for single cylinder diesel |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822395A (en) * | 2016-05-11 | 2016-08-03 | 江苏大学 | Tail gas purification muffler applied to 1115 series of single-cylinder diesel engines |
| CN106121775A (en) * | 2016-08-25 | 2016-11-16 | 无锡开普动力有限公司 | A kind of single-cylinder air-cooled machine acoustic wave filter structure |
| CN106285873A (en) * | 2016-08-25 | 2017-01-04 | 无锡开普动力有限公司 | A kind of multi-functional lobby device of air for electromotor and electromotor |
| CN106321207A (en) * | 2016-08-25 | 2017-01-11 | 无锡开普动力有限公司 | Engine exhaust device being convenient to maintain and engine |
| CN106677872A (en) * | 2016-12-15 | 2017-05-17 | 江苏大学 | Purification silencer for R180 single-cylinder swirl chamber diesel engine |
| CN107664346A (en) * | 2017-08-23 | 2018-02-06 | 中国科学院广州能源研究所 | A kind of heat pump tail gas noise reduction heat reclamation device |
| CN115199386A (en) * | 2022-06-30 | 2022-10-18 | 湖北精滤设备有限公司 | Integrated purifying silencer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202391522U (en) * | 2011-11-24 | 2012-08-22 | 杭州银轮科技有限公司 | SCR (selective catalytic reduction) catalytic conversion muffler |
| DE102011015512A1 (en) * | 2011-03-30 | 2012-10-04 | Dif Die Ideenfabrik Gmbh | Compact exhaust treatment unit with mixing zone and method for mixing an exhaust gas |
| JP2012219794A (en) * | 2011-04-14 | 2012-11-12 | Mitsubishi Heavy Ind Ltd | Muffler for general-purpose internal combustion engine |
| CN104033222A (en) * | 2014-06-30 | 2014-09-10 | 清华大学苏州汽车研究院（吴江） | Tail gas purifying device of explosion-proof diesel engine |
| CN204783191U (en) * | 2015-07-06 | 2015-11-18 | 无锡华源凯马发动机有限公司 | Integral type purifies silencer for single cylinder diesel |
-
2015
- 2015-07-06 CN CN201510392115.4A patent/CN104929739A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011015512A1 (en) * | 2011-03-30 | 2012-10-04 | Dif Die Ideenfabrik Gmbh | Compact exhaust treatment unit with mixing zone and method for mixing an exhaust gas |
| JP2012219794A (en) * | 2011-04-14 | 2012-11-12 | Mitsubishi Heavy Ind Ltd | Muffler for general-purpose internal combustion engine |
| CN202391522U (en) * | 2011-11-24 | 2012-08-22 | 杭州银轮科技有限公司 | SCR (selective catalytic reduction) catalytic conversion muffler |
| CN104033222A (en) * | 2014-06-30 | 2014-09-10 | 清华大学苏州汽车研究院（吴江） | Tail gas purifying device of explosion-proof diesel engine |
| CN204783191U (en) * | 2015-07-06 | 2015-11-18 | 无锡华源凯马发动机有限公司 | Integral type purifies silencer for single cylinder diesel |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822395A (en) * | 2016-05-11 | 2016-08-03 | 江苏大学 | Tail gas purification muffler applied to 1115 series of single-cylinder diesel engines |
| CN106121775A (en) * | 2016-08-25 | 2016-11-16 | 无锡开普动力有限公司 | A kind of single-cylinder air-cooled machine acoustic wave filter structure |
| CN106285873A (en) * | 2016-08-25 | 2017-01-04 | 无锡开普动力有限公司 | A kind of multi-functional lobby device of air for electromotor and electromotor |
| CN106321207A (en) * | 2016-08-25 | 2017-01-11 | 无锡开普动力有限公司 | Engine exhaust device being convenient to maintain and engine |
| CN106677872A (en) * | 2016-12-15 | 2017-05-17 | 江苏大学 | Purification silencer for R180 single-cylinder swirl chamber diesel engine |
| CN107664346A (en) * | 2017-08-23 | 2018-02-06 | 中国科学院广州能源研究所 | A kind of heat pump tail gas noise reduction heat reclamation device |
| CN115199386A (en) * | 2022-06-30 | 2022-10-18 | 湖北精滤设备有限公司 | Integrated purifying silencer |
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Application publication date: 20150923 |
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