CN202628239U - Universal minitype petrol engine tail gas purifying and air supply reinforcing device - Google Patents
Universal minitype petrol engine tail gas purifying and air supply reinforcing device Download PDFInfo
- Publication number
- CN202628239U CN202628239U CN 201220158012 CN201220158012U CN202628239U CN 202628239 U CN202628239 U CN 202628239U CN 201220158012 CN201220158012 CN 201220158012 CN 201220158012 U CN201220158012 U CN 201220158012U CN 202628239 U CN202628239 U CN 202628239U
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- Prior art keywords
- baffler
- muffler
- tail gas
- outlet pipe
- catalytic converter
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Abstract
The utility model discloses a universal minitype four-stroke petrol engine tail gas purifying and air supply reinforcing device, which includes a muffler (2) and a secondary gulp valve (7), wherein an exhaust pipe (1) and a muffler air outlet pipe (4) are connected with the two ends of the muffler (2) respectively; a muffler partition board (3) is arranged in the muffler (2); a catalytic converter (6) is arranged on the muffler partition board (3); the secondary gulp valve (7) is mounted on the exhaust pipe (1) at the outer part of the muffler (2); a U-shaped pipe (5) is arranged inside the muffler; and one end of the U-shaped pipe (5) is connected onto the air outlet pipe (4) of the muffler (2). The utility model has the advantages that the air supply effect is reinforced, the performance of the catalytic converter is brought into full play, the catalysis and conversion efficiencies are improved, the cost is reduced, and meanwhile, the service life of the catalytic converter is prolonged.
Description
Technical field
The utility model relates to device for purifying and treating tail gas, and particularly a kind of tail gas purification of general small-size gasoline engine that improves tail gas catalyzed transformation efficiency is strengthened making-up air device.
Background technique
General small-size gasoline engine is meant non-road, is fuel with gasoline, and power is no more than the motor of 19KW.Be usually used in equipment dynamic sources such as motor, water pump, mowing machine and cutting machine.Along with the extensive use of general small-size gasoline engine, its exhaust pollutant of discharging also becomes one of main source of pollution of atmosphere.World today's global warming, energy-saving and emission-reduction have become global common recognition.The control general small-size gasoline engine discharges pollutants to have caused the great attention of various countries, particularly American-European countries, has formulated strict Abgasgesetz.At present in the world general gasoline engines discharge pollutants that limit value carries out U.S. EPA II stage criterion arranged, the California, USA standard, the Europe II stage criterion, U.S.'s phase III standard was also implemented in 2011, its standard adds tight about 20% than EPA II stage criterion.Along with the general small-size gasoline engine emission limit set is more and more stricter, each researcher of company has carried out a large amount of technological development and improvement.
The tail gas clean-up technology of general small-size gasoline engine mainly is that baffler is set at present, and in baffler, installs catalytic converter additional, and the advanced secondary air-supplementing valve of also being furnished with is assisted, and reaches emission regulation demands through regulating Carburetor again.Though this device can temporarily be satisfied with Europe II and EPA II stage laws and regulations requirement; But reply California, USA standard and EPA phase III standard are then very difficult; Want to satisfy new laws and regulations requirement; Strengthen the catalytic converter specification, and the bullion content in the corresponding increase catalyst converter is a kind of means, but cost is improved greatly.And can not reach the high efficiency as far as possible the very crux that tail gas is transformed, and mainly be that oxygen content is not enough in the tail gas, the catalyst converter transformation efficiency is had a greatly reduced quality, can not bring into play its maximum conversion efficient.Though aeration valve supply oxygen is arranged; But aeration valve is controlled air compensation through the engine exhaust negative pressure; Especially motor is when high load, and it is little that the outlet pipe place forms negative pressure, and the aeration valve air compensation is less; And the pollutant in the tail gas is more at this moment, and aeration valve can not be used for the catalytic converter reaction by the sufficient oxygen of supply.
Summary of the invention
The purpose of the utility model is; Provide a kind of tail gas purification of general small-size gasoline engine to strengthen making-up air device; The motor that solves petrol engine is under the relatively more abominable situation of high load, baffler inner exhaust gas; To baffler higher oxygen content is provided,, improves the engine exhaust emission quality to give full play to the performance of catalyst converter.
For realizing above-mentioned purpose, the technological scheme of the utility model is: a kind of tail gas purification of general small-size gasoline engine is strengthened making-up air device, comprises baffler, secondary air-supplementing valve; The baffler two ends connect outlet pipe and baffler steam outlet pipe respectively; Also be provided with the baffler dividing plate in the baffler, the baffler dividing plate is provided with catalytic converter, and secondary air-supplementing valve is installed on the outside outlet pipe of baffler; Baffler inside also is provided with U type pipe, and U type Guan Yiduan is connected on the steam outlet pipe of baffler.U type pipe through lengthening; Change the Negative Pressure Difference of baffler air outlet (atmospheric pressure) and suction port (outlet pipe place); Equally also increased the Negative Pressure Difference of tonifying Qi suction port (atmospheric pressure) with air outlet (outlet pipe); Thereby strengthen secondary air compensating opening of valves amplitude, increase air compensation, catalyst converter changing effect when increasing oxygen obviously increases.
As the further improvement of the utility model, U type bore is equal to or greater than the internal diameter of baffler steam outlet pipe, and it is smooth and easy that motor is given vent to anger, not to the engine producing side effect.
In sum, the utility model has the advantages that: strengthen the effect of tonifying Qi, give full play to the performance of catalyst converter, improve catalytic conversion efficiency, reduce cost, also can prolong the life-span of catalytic converter simultaneously.
Description of drawings
This tail gas purification of general small-size gasoline engine of Fig. 1 is strengthened the making-up air device structural representation.
Embodiment
Further specify below in conjunction with the embodiment of accompanying drawing the utility model.
As shown in Figure 1, the utility model tail gas purification of general small-size gasoline engine is strengthened making-up air device and is comprised baffler 2, secondary air-supplementing valve 7, and baffler 2 two ends connect outlet pipe 1 and baffler steam outlet pipe 4 respectively; Also be provided with baffler dividing plate 3 in the baffler 2, baffler dividing plate 3 is provided with catalytic converter 6, and secondary air-supplementing valve 7 is installed on the outlet pipe 1 of baffler 2 outsides; Baffler inside also is provided with U type pipe 5; U type pipe 5 one ends are connected on the steam outlet pipe 4 of baffler 2, and U type pipe is according to baffler intracavity space size, and is long as far as possible; U type pipe range, the polishing better effects if.
The general small-size gasoline engine of the utility model is strengthened the tonifying Qi scheme; U type pipe 5 is installed in baffler inside and is connected on the air outlet 4 of baffler; When engine start was worked, the exhaust gas heat air-flow that discharge the burning back was arrived in the baffler inner chamber through outlet pipe 1 with very fast speed by the thrust of piston, and the secondary air-supplementing valve 7 air outlet ends in being installed in outlet pipe form negative pressure; The reed of secondary air-supplementing valve 7 is atmospheric pressure on one side; Be negative pressure on one side, reed is opened by the atmospheric pressure effect, and the air in the while atmosphere is got in the bafflers 2 from secondary air-supplementing valve 7 by atmospheric effect.Tail gas with after fresh air mixes through catalytic converter 6; The influence of catalytic converter 6 heated airflow begins temperature and raises; Catalytic converter 6 beginnings and tail gas generation catalytic reaction after reaching initiation temperature, tail gas reaches strict environmental requirement through the effect of catalytic converter 6.
After on the basis of existing tail gas purification of general small-size gasoline engine technology apparatus of the present invention being installed, require to test according to EPA II stage general small-size gasoline engine emission standard, the effect of obvious reduction engine exhaust emission is arranged, specifically test as shown in table 1:
Certain 158F frequency conversion engine emission data, the former 18g that comes, common tonifying Qi and reinforcement tonifying Qi discharging contrast:
Can know by correlation data, reinforcement tonifying Qi scheme has been installed after, CO in the petrol engine tail gas and the content of HC all descend, particularly the transformation efficiency of HC has improved more than 50% than only installing catalyst converter and aeration valve additional, reaction O later
2Surplus capacity is also more than common tonifying Qi, shows that the utility model given full play to the performance of catalyst converter, improved catalytic conversion efficiency, reduced cost, because this device has improved the Environmental Conditions of catalytic converter, also can prolong the life-span of catalytic converter simultaneously.
The case of practical implementation described in the utility model is merely the preferable case study on implementation of the utility model, is not the practical range that is used for limiting the utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should be as the technological category of the utility model.
Claims (2)
1. a tail gas purification of general small-size gasoline engine is strengthened making-up air device; Comprise baffler (2), secondary air-supplementing valve (7); Baffler (2) two ends connect outlet pipe (1) and baffler steam outlet pipe (4) respectively, also are provided with baffler dividing plate (3) in the baffler (2), and baffler dividing plate (3) is provided with catalytic converter (6); Secondary air-supplementing valve (7) is installed on the outside outlet pipe (1) of baffler (2); It is characterized in that baffler inside also is provided with U type pipe (5), U type pipe (5) one ends are connected on the steam outlet pipe (4) of baffler (2).
2. tail gas purification of general small-size gasoline engine according to claim 1 is strengthened making-up air device, it is characterized in that U type pipe (5) internal diameter is equal to or greater than the internal diameter of baffler steam outlet pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220158012 CN202628239U (en) | 2012-04-16 | 2012-04-16 | Universal minitype petrol engine tail gas purifying and air supply reinforcing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220158012 CN202628239U (en) | 2012-04-16 | 2012-04-16 | Universal minitype petrol engine tail gas purifying and air supply reinforcing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202628239U true CN202628239U (en) | 2012-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220158012 Expired - Lifetime CN202628239U (en) | 2012-04-16 | 2012-04-16 | Universal minitype petrol engine tail gas purifying and air supply reinforcing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202628239U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065840A (en) * | 2015-08-07 | 2015-11-18 | 无锡市悦丰化工有限公司 | Exhaust muffler for chemical equipment pipelines |
-
2012
- 2012-04-16 CN CN 201220158012 patent/CN202628239U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065840A (en) * | 2015-08-07 | 2015-11-18 | 无锡市悦丰化工有限公司 | Exhaust muffler for chemical equipment pipelines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |