CN202033192U - Simulation test stand for exhaust post-treatment apparatus of engine - Google Patents
Simulation test stand for exhaust post-treatment apparatus of engine Download PDFInfo
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- CN202033192U CN202033192U CN2010206678472U CN201020667847U CN202033192U CN 202033192 U CN202033192 U CN 202033192U CN 2010206678472 U CN2010206678472 U CN 2010206678472U CN 201020667847 U CN201020667847 U CN 201020667847U CN 202033192 U CN202033192 U CN 202033192U
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Abstract
The utility model discloses a simulation test stand for the exhaust post-treatment apparatus of an engine, comprising a flow control system, a temperature control system, a main gas composition control system, a pressure control system and a control host, wherein the five subsystems are connected through pipelines. The simulation test stand controls and adjusts the flow, temperature, pressure and main gas compositions of gas entering into the post-treatment apparatus by the five subsystems, simulates the status of exhaust gas of the engine in stable working condition, thus realizing related performance and reliability test of the post-treatment apparatus. The simulation test stand simulates the real status of exhaust gas of the engine by controlling the flow, temperature and main gas compositions of the gas, and provides gas having the same state as that of the exhaust gas of the engine for the post-processing apparatus to carry out related performance and reliability test. At the same time, the simulation test stand has the advantages of low investment, convenient manufacture, short manufacture and installation period, fast effectiveness, low operation energy consumption, low cost, simplicity, practicality and etc.
Description
Technical field
The utility model patent relates to automobile engine to exhaust aftertreatment test system field, relates to a kind of simulator stand of engine exhaust after-treatment device in particular.
Background technology
Along with the requirement to the vehicular engine discharging all over the world is more and more stricter, the optimization of depending engine self alone reduces all emissions and becomes more and more difficult, engine installs after-treatment device (as urea SCR device, triple-effect catalytic unit, DOC, POC, DPF etc.) efficiently additional to be handled engine exhaust emission and becomes more and more widely selection, and the research and development of new work engine after-treatment device is also more and more hotter.
For the main performance index and the reliability of engine evaluated after-treatment device, need carry out great deal of experimental (for example: the pressure drop size test that the ability of after-treatment device processing target waste gas, after-treatment device produce, after-treatment device thermal vibration endurancing or the like).At present, engine rig test platform test, drum dynamometer test are the test methods that is used to test and estimate after-treatment device the most widely.This class engine pedestal and drum dynamometer system complex mainly comprise engine, dynamometer machine, emission test equipment etc.; Bulk testing platform cost high (up to ten million easily, even several ten million); Construction period long (being determined to capital construction from scheme usually needs about 1-1.5 to equipment transportation Installation and Debugging to the whole cycle of system verification again, even longer); Operating cost height (water, electricity, oil, devices consume product, equipment amortization, personal expenditures etc.); Auxiliary facility requires high (ground damping requirement, oil depot designing requirement, testing laboratory's environmental requirement, fire-fighting requirement, noise requirements etc.).It is higher to adopt block testing stand to test whole energy consumption simultaneously.Exactly because these, a lot of engine aftertreatment enterprises can't bear huge cost or owing to the construction period reason, thereby have seriously limited the research and development and the technical progress of new work engine after-treatment device.
Summary of the invention
To be solved in the utility model is the above-mentioned defective that prior art exists, aim to provide a kind of simulator stand of easily manufactured, cheap, engine exhaust after-treatment device that operation energy consumption is low and simple and practical, by the exhaust of simulated engine, for engine post-treatment apparatus provide with the engine steady state (SS) under the gas of exhaust with same characteristic features (identical flow, temperature, pressure, main gas componant) carry out the Performance And Reliability test.
For realizing above purpose, the technical solution adopted in the utility model is:
A kind of simulator stand of engine exhaust after-treatment device, comprise 5 subsystems: flow control system, temperature control system, main gas componant control system, control pressurer system and main control system, it is characterized in that described 5 subsystems connect by pipeline, described flow control system comprises air cleaner, blower fan and air flowmeter, adjust the rotating speed of blower fan in real time by the numerical value of air flowmeter, make that gas flow is consistent with certain operating mode flow under the engine steady state in the testing table pipeline; Described temperature control system comprises gas-heating apparatus and temperature sensor, thereby comes the heated condition of pilot-gas heating arrangement to control the temperature of gas in the testing table pipeline by the real time temperature numerical value that temperature sensor records; Described main gas componant control system comprises calibrating gas bottle, gas valve, electric flow control valve, gas mixer and gas sensor, according to main gas concentration numerical value under the corresponding operating mode of the main gas composition concentration of actual measurement, extraction flow and engine, the control electric flow control valve makes and the interior gas componant that forms corresponding concentration of testing table gas outlet make main gas evenly distribute by gas mixer then in gas outlet; Described control pressurer system comprises electric press variable valve and pressure transducer, pressure data by pressure transducer feedback is adjusted pressure-regulating valve in real time, and it is identical with the corresponding operating mode exhaust back pressure of engine to make that testing table offers the gaseous tension of after-treatment device; Described main control system is used to receive, handle the information of each sensor, controls computing, finally drives the control that each actuator carries out flow, temperature, pressure, main gas componant.
After-treatment device testing table of the present utility model enters gas flow, temperature, pressure and the main gas componant of after-treatment device by described 5 subsystem regulating and controlling, exhaust situation during the simulated engine steady state condition, thus realize the Performance And Reliability test that after-treatment device is relevant.
The utility model has the advantages that:, therefore can carry out correlated performance and fail-test for after-treatment device provides the gas with the engine exhaust equal state because the utility model has been by having simulated actual engine exhaust situation to the control of gas flow, temperature, pressure and main gas componant.The simulator stand of engine exhaust after-treatment device of the present utility model has small investment, convenient manufacturing, makes advantages such as installation period weak point, instant effect, operation energy consumption and cost are low, simple and practical simultaneously.
According to the utility model, a typical embodiment, described gas-heating apparatus comprises burner, fuel tank, petrolift, fuel nozzle and spark plug, described air cleaner, blower fan and air flowmeter are connected successively by pipeline; Described fuel tank, petrolift and fuel nozzle are connected successively, and nozzle and spark plug are installed in the burner; The output terminal of described air flowmeter is connected to the input end of described burner by pipeline; Described calibrating gas bottle, gas valve and electric flow control valve are connected successively by pipeline; The output terminal of described burner is connected to the input end of described gas mixer by pipeline; The output terminal of described electric flow control valve connects a gas nozzle by pipeline, and described gas nozzle is arranged on the upstream of described gas mixer; Be provided with the after-treatment device of temperature sensor, gas sensor, electric press variable valve, pressure transducer and engine exhaust on the downstream pipeline of described gas mixer successively; Described main control system links to each other with the output terminal of described air flowmeter, temperature sensor, gas sensor and pressure transducer.
According to the utility model, described gas sensor is gas analyzer or NOx sensor.
That the blower fan of the simulator stand of engine exhaust after-treatment device of the present utility model can adopt is centrifugal, axial-flow type or diagonal flow type structure, does not limit concrete pattern.
The concrete quantity of calibrating gas bottle, gas valve and flowrate control valve does not limit in the simulator stand of engine exhaust after-treatment device of the present utility model, and standard gas kind can specifically be set according to the needs of after-treatment device in concrete quantity and the calibrating gas bottle.
In the simulator stand of engine exhaust after-treatment device of the present utility model in the burner employed fuel can adopt fuel such as diesel oil, gasoline, ethanol.
As further improvement of the utility model, in the gas mixer downstream refrigeratory is set, be used for cooling off the mixed gas after the burner heating.Described refrigeratory can be shell-and-tube, corrugated tube type or board-like, also can adopt water-cooling pattern or air cooling mode simultaneously, when adopting latter's structure, can draw a branch road from the pipeline of blower fan downstream by a by-pass valve and supply with the refrigeratory cooling air.Control if the burner combustion temperature can be sprayed by fuel, so also can not adopt refrigeratory, directly spray the pilot-gas temperature by fuel.
Actuator in the simulator stand of engine exhaust after-treatment device of the present utility model (blower fan, flow valve, pressure-regulating valve) all can adopt hand gear, and adopts simple manual operation to realize.
The simulator stand pipeline of engine exhaust after-treatment device of the present utility model adopts 304 or 304 above stainless steels making, to be adapted to the requirement of different after-treatment devices, and urea SCR system especially.
Description of drawings
Fig. 1 is used for diesel urea SCR after-treatment device synoptic diagram for the testing table that adopts air-cooled simulated engine exhaust.
Fig. 2 is used for gasoline engine after-treatment device triple-effect catalytic unit synoptic diagram for the testing table that adopts air-cooled simulated engine exhaust.
Fig. 3 is used for diesel urea SCR after-treatment device synoptic diagram for the testing table of the simulated engine exhaust of employing water-cooled.
Fig. 4 is used for diesel urea SCR after-treatment device synoptic diagram for the testing table of no refrigeratory simulated engine exhaust.
Fig. 5 is the simulator stand control structure synoptic diagram of engine exhaust after-treatment device.
Among the figure, air cleaner-1, blower fan-2, by-pass valve-3, air flowmeter-4, fuel tank-5, petrolift-6, fuel nozzle-7, spark plug-8, burner-9, calibrating gas bottle-10, gas valve-11, electric flow control valve-12, gas nozzle-13, gas mixer-14, refrigeratory-15, air out-16, temperature sensor-17, gas sensor-18, electric press variable valve-19, pressure transducer-20, mixer-21, urea nozzle-22, SCR catalytic converter-23, the exhaust passage of the after-treatment device of engine exhaust-24, pipeline-25, main control system-26, after-treatment device triple-effect catalytic unit-27, the sensor input end-28 of main control system, the actuator output terminal-29 of main control system, the water delivering orifice of refrigeratory-30, the water inlet of refrigeratory-31.
Embodiment
Contrast accompanying drawing below, by description to embodiment, to embodiment of the present utility model, for example: the effect of mutual alignment relation between the shape of each structure, structure and the each several part and annexation, each several part and principle of work etc. are done further detailed explanation.
The simulator stand of engine exhaust after-treatment device of the present utility model has been by having simulated actual engine exhaust situation to the control of gas flow, temperature, pressure, main gas componant, carries out correlated performance and fail-test for after-treatment device provides the gas with the engine exhaust equal state.
Fig. 1 is applied to the synoptic diagram of diesel urea SCR after-treatment device for the simulator stand of engine exhaust after-treatment device of the present utility model.With reference to Fig. 1, the simulator stand of engine exhaust after-treatment device of the present utility model comprises that 5 groups of subsystems become: flow control system, temperature control system, main gas componant control system, control pressurer system and main control system, described 5 subsystems and pipeline 25 thereof have constituted the after-treatment device testing table of simulated engine exhaust jointly.
Described flow control system is made up of air cleaner 1, blower fan 2 and air flowmeter 4, adjusts the rotating speed of blower fan 2 in real time by the numerical value of air flowmeter 4, makes that gas flow is consistent with certain operating mode flow under the engine steady state in the testing table pipeline.
Described temperature control system is by fuel tank 5, petrolift 6, fuel nozzle 7, spark plug 8, burner 9, by-pass valve 3, refrigeratory 15 and temperature sensor 17 are formed, light the fuel combustion that sprays in the burner 9 by spark plug 8 and produce high-temperature gas, the real time temperature numerical value that temperature sensor 17 records is controlled by-pass valve 3, fuel nozzle 7 and spark plug 8, appropriateness is opened by-pass valve 3 and is given and feed Cryogenic air in the refrigeratory and make the testing table gas temperature be reduced to suitable temperature when the hot-gas temperature that burning obtains is too high, cross control nozzle more than 7 sprays when low when temperature, spark plug 8 is lighted the gas of more fuel combustion formation higher temperature.
Described main gas componant control system is made up of calibrating gas bottle 10, gas valve 11, electric flow control valve 12, gas nozzle 13, gas mixer 14, gas sensor (NOx sensor) 18, according to main gas NOx concentration numerical value under the corresponding operating mode of the main gas componant NOx concentration of actual measurement, extraction flow and engine, control electric flow control valve 12 makes calibrating gas enter in the testing table gas outlet through gas nozzle-13, form the NOx gas of corresponding concentration, make main gas NOx in gas outlet, evenly distribute by gas mixer 14 then.
Described control pressurer system is made up of electric press variable valve 19 and pressure transducer 20, pressure data by pressure transducer 20 feedback is adjusted pressure-regulating valve 19 in real time, and it is identical with the corresponding operating mode exhaust back pressure of engine to make that testing table offers the gaseous tension of diesel urea SCR after-treatment device (comprising mixer 21, urea nozzle 22, SCR catalytic converter 23).
Described main control system 26 mainly is the information that receives, handles each sensor, controls computing, finally drives the control that each actuator carries out flow, temperature, pressure, main gas componant.
Specifically, described air cleaner 1, blower fan 2 and air flowmeter 3 are connected successively by pipeline; Described calibrating gas bottle 10, gas valve 11 and electric flow control valve 12 are connected successively by pipeline; Described fuel tank 5, petrolift 6 and fuel nozzle 7 are connected successively, and nozzle 7 and spark plug 8 are installed in the burner 9; The output terminal of described air flowmeter 4 is connected to the input end of described burner 9 by pipeline; The output terminal of described electric flow control valve 6 connects a gas nozzle 7 by pipeline, and described gas nozzle 7 is arranged on the upstream of described gas mixer 8; The output terminal of described gas mixer 8 connects the after-treatment device of refrigeratory 15, electric press variable valve 19 and engine exhaust successively by pipeline; Described temperature sensor 17 and gas sensor 18 are arranged on the downstream pipeline of refrigeratory 15, described pressure transducer 20 is arranged on the downstream pipeline of electric press variable valve 19, and described main control system 26 links to each other with described air flowmeter 4, temperature sensor 17, gas sensor 18 and the output terminal of pressure transducer 20.Described by-pass valve 3 is arranged on the downstream of blower fan 2, and is connected to the cooling air air inlet of refrigeratory 15 by pipeline.
The simulated engine exhaust that simulator stand by engine exhaust after-treatment device of the present utility model provides just can be to the target after-treatment device---and diesel urea SCR after-treatment device (comprises mixer 21, urea nozzle 22, SCR catalytic converter 23) comprises the NOx of SCR system transformation efficiency, the pressure drop that the SCR catalytic converter produces, mixer structure is optimized, nozzle arrangements is optimized, performance test and the warm circulations of height such as gas exhaust piping optimization, fail-test researchs such as thermal vibration in conjunction with shaking table.
With reference to Fig. 2, change the calibrating gas in the calibrating gas bottle 4 into HC, CO and NOx, promptly can be gasoline engine after-treatment device triple-effect catalytic unit 21 simulated engine that contains main gas componant HC, CO and NOx exhaust is provided, carry out the correlated performance and the fail-test of gasoline engine after-treatment device triple-effect catalytic unit 27.
With reference to Fig. 3, another kind of embodiment of the present utility model.Be that with Fig. 1 embodiment difference described refrigeratory 15 adopts water-cooled structure, need not adopt by-pass valve.All the other structures and Fig. 1 embodiment are identical.
With reference to Fig. 4, another embodiment of the present utility model.Be not to be provided with refrigeratory 15 with Fig. 1 embodiment difference.At this moment, the burner combustion temperature is sprayed by fuel and is controlled.All the other structures and Fig. 1 embodiment are identical.
Fig. 5 is the simulator stand control structure synoptic diagram of engine exhaust after-treatment device.With reference to Fig. 3, the simulator stand control of engine exhaust after-treatment device of the present utility model is by gathering each sensor (air flowmeter 4, temperature sensor 17, NOx sensor 18, pressure transducer 20 signals, carry out signal Processing then, carry out data processing by main control system, drive the control that each actuator is finished gas flow, temperature, pressure, main gas componant then.
Above-mentionedly in conjunction with the accompanying drawings the utility model has been carried out exemplary description, but specific implementation of the present utility model is not subjected to the restriction of aforesaid way.As long as adopted the improvement of the various unsubstantialities that design of the present utility model and technical scheme carry out, or design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model without improving.
Claims (8)
1. the simulator stand of an engine exhaust after-treatment device, comprise flow control system, temperature control system, main gas componant control system, control pressurer system and 5 subsystems of main control system, it is characterized in that described 5 subsystems connect by pipeline, wherein:
Described flow control system comprises air cleaner (1), blower fan (2) and air flowmeter (4), adjust the rotating speed of blower fan (2) in real time by the numerical value of air flowmeter (4), make that gas flow is consistent with certain operating mode flow under the engine steady state in the testing table pipeline;
Described temperature control system comprises gas-heating apparatus and temperature sensor (17), by temperature sensor (17) thus the real time temperature numerical value that records comes the temperature of gas in the heated condition control testing table pipeline of pilot-gas heating arrangement;
Described main gas componant control system comprises calibrating gas bottle (10), gas valve (11), electric flow control valve (12), gas mixer (14) and gas sensor (18), according to main gas concentration numerical value under the corresponding operating mode of the main gas composition concentration of actual measurement, extraction flow and engine, control electric flow control valve (12) makes and the interior gas componant that forms corresponding concentration of testing table gas outlet make main gas evenly distribute by gas mixer then in gas outlet;
Described control pressurer system comprises electric press variable valve (19) and pressure transducer (20), pressure data by pressure transducer (20) feedback is adjusted pressure-regulating valve (19) in real time, and it is identical with the corresponding operating mode exhaust back pressure of engine to make that testing table offers the gaseous tension of after-treatment device;
Described main control system is used to receive, handle the information of each sensor, controls computing, finally drives the control that each actuator carries out flow, temperature, pressure, main gas componant.
2. the simulator stand of engine exhaust after-treatment device as claimed in claim 1 is characterized in that described gas sensor is gas analyzer or NOx sensor.
3. the simulator stand of engine exhaust after-treatment device as claimed in claim 1 is characterized in that described blower fan adopts centrifugal, axial-flow type or diagonal flow type structure.
4. as the simulator stand of any one described engine exhaust after-treatment device of claim 1-3, it is characterized in that described gas-heating apparatus comprises burner (9), fuel tank (5), petrolift (6), fuel nozzle (7) and spark plug (8).
5. the simulator stand of engine exhaust after-treatment device as claimed in claim 4 is characterized in that described air cleaner (1), blower fan (2) and air flowmeter (4) are connected successively by pipeline (25); Described fuel tank (5), petrolift (6) and fuel nozzle (7) are connected successively, and nozzle (7) and spark plug (8) are installed in the burner (9); The output terminal of described air flowmeter (4) is connected to the input end of described burner (9) by pipeline; Described calibrating gas bottle (10), gas valve (11) and electric flow control valve (12) are connected successively by pipeline; The output terminal of described burner (9) is connected to the input end of described gas mixer (14) by pipeline; The output terminal of described electric flow control valve (12) connects a gas nozzle (13) by pipeline, and described gas nozzle (13) is arranged on the upstream of described gas mixer (14); Be provided with the after-treatment device of temperature sensor (17), gas sensor (18), electric press variable valve (19), pressure transducer (20) and engine exhaust on the downstream pipeline of described gas mixer (14) successively; Described main control system (26) links to each other with described air flowmeter (4), temperature sensor (17), gas sensor (18) and the output terminal of pressure transducer (20).
6. the simulator stand of engine exhaust after-treatment device as claimed in claim 5 is characterized in that in described gas mixer (14) downstream a refrigeratory (15) being set.
7. the simulator stand of engine exhaust after-treatment device as claimed in claim 6 is characterized in that described refrigeratory (15) is shell-and-tube, corrugated tube type or plank frame.
8. the simulator stand of engine exhaust after-treatment device as claimed in claim 6 is characterized in that described refrigeratory (15) adopts water-cooling pattern or air cooling mode.
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| CN2010206678472U CN202033192U (en) | 2010-12-17 | 2010-12-17 | Simulation test stand for exhaust post-treatment apparatus of engine |
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| CN2010206678472U CN202033192U (en) | 2010-12-17 | 2010-12-17 | Simulation test stand for exhaust post-treatment apparatus of engine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095587A (en) * | 2010-12-17 | 2011-06-15 | 杭州银轮科技有限公司 | Simulation test bed used for engine exhaust aftertreatment device |
| CN102928234A (en) * | 2012-11-07 | 2013-02-13 | 王京姝 | Hot-blast stove system for simulating exhaust situation of marine engine |
| CN105628418A (en) * | 2015-12-17 | 2016-06-01 | 潍柴动力股份有限公司 | System and method of testing SCR (Selective Catalytic Reduction) silencer |
| CN106322110A (en) * | 2016-10-31 | 2017-01-11 | 武汉东测科技有限责任公司 | Automotive catalyst converter testing hot air supply device and method |
| JP2017083193A (en) * | 2015-10-23 | 2017-05-18 | 株式会社ベスト測器 | Performance evaluation device of exhaust gas purification catalyst and exhaust gas sensor |
| CN107228762A (en) * | 2017-06-26 | 2017-10-03 | 湘潭大学 | A kind of test engine catalyst flowing and the experimental provision of conversion performance |
| CN108458876A (en) * | 2017-12-05 | 2018-08-28 | 潍柴动力股份有限公司 | SCR post-processes urea crystals off-line simulation pilot system |
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2010
- 2010-12-17 CN CN2010206678472U patent/CN202033192U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095587A (en) * | 2010-12-17 | 2011-06-15 | 杭州银轮科技有限公司 | Simulation test bed used for engine exhaust aftertreatment device |
| CN102095587B (en) * | 2010-12-17 | 2012-09-19 | 杭州银轮科技有限公司 | Simulation test bed used for engine exhaust aftertreatment device |
| CN102928234A (en) * | 2012-11-07 | 2013-02-13 | 王京姝 | Hot-blast stove system for simulating exhaust situation of marine engine |
| JP2017083193A (en) * | 2015-10-23 | 2017-05-18 | 株式会社ベスト測器 | Performance evaluation device of exhaust gas purification catalyst and exhaust gas sensor |
| CN105628418A (en) * | 2015-12-17 | 2016-06-01 | 潍柴动力股份有限公司 | System and method of testing SCR (Selective Catalytic Reduction) silencer |
| CN106322110A (en) * | 2016-10-31 | 2017-01-11 | 武汉东测科技有限责任公司 | Automotive catalyst converter testing hot air supply device and method |
| CN106322110B (en) * | 2016-10-31 | 2018-08-14 | 武汉东测科技有限责任公司 | A kind of automotive catalytic converter experiment hot air supplying apparatus and method |
| CN107228762A (en) * | 2017-06-26 | 2017-10-03 | 湘潭大学 | A kind of test engine catalyst flowing and the experimental provision of conversion performance |
| CN108458876A (en) * | 2017-12-05 | 2018-08-28 | 潍柴动力股份有限公司 | SCR post-processes urea crystals off-line simulation pilot system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111109 Effective date of abandoning: 20120919 |