CN1369627A - Evaluating tester for catalytic cleaner activity of motorcycle - Google Patents
Evaluating tester for catalytic cleaner activity of motorcycle Download PDFInfo
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- CN1369627A CN1369627A CN02116352A CN02116352A CN1369627A CN 1369627 A CN1369627 A CN 1369627A CN 02116352 A CN02116352 A CN 02116352A CN 02116352 A CN02116352 A CN 02116352A CN 1369627 A CN1369627 A CN 1369627A
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- 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
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Abstract
The present invention relating to an active evaluation device of catalytic cleaner for motorcycle and trail bike aims at accurate evaluation for motorcycle catalytic cleaner in active way under the simulated real operating condition, which is an active evaluation test device invented based on real used condition of motorcycle catalytic cleaner by using exhaust of motorcycle motor as a gas source to take the whole catalytic cleaner in using as an evalualtion object. The present invention is a test device consisting of measuring and cnotrolling subsystem of air/fuel ratiol, heat exchanging subsystem of waste gas, measuring and controlling sub-system of flow rate and dierct sampling and analyzing system of waste gas as well as a test device which can be used individually or in combined way according to test specification for each system and to select motorcycle motor used to form a complte set with catalytic cleaner as a source of created waste gas to measure the activities of catalytic cleaner.
Description
Technical field
The present invention relates to motorcycle and trail bike catalytic cleaner activation evaluating device.
Background technique
A large amount of uses of motorcycle produce severe contamination to environment, and it is main solution that catalytic cleaner reduction discharging is installed in exhaust system for motorcycle.Catalytic cleaner is being produced, is being necessary and key in the application process at it the evaluation experimental device of the purification ratio (that is activity) of harmful exhaust composition under the different service conditions.
At present, the simulated engine exhaust that the relevant motorcycle of having issued is only seen with limited several calibrating gas mixed preparing with the active evaluation test device of catalytic cleaner is a source of the gas, gets the report that volume has only several milliliters sample to estimate on catalytic cleaner.As document " motorcycle pollutes the experimental study of control catalytic converter " " Techniques and Equipment for Environmental Pollution Control " first phase in 2000.Though this method is the activity of anticaltalysis purifier to a certain extent,, there is following defective in this sample active evaluation test: the simulated engine exhaust of being prepared departs from actual conditions at aspects such as composition kind and concentration.More than kind surplus only hydrocarbon constituents just has 200 in the motor actual exhaust air, wherein every kind of concrete composition proportion is owing to the difference of engine type and running operating mode presents very complicated variation, it obviously is unpractical attempting to use standard gas that the waste gas of complexity like this is accurately simulated preparation, so the method for preparation simulation source of the gas is difficult to the activity of accurate response catalyst converter under actual service conditions; In addition, with the sample of taking off on the catalytic cleaner as the catalytic cleaner global shape of also having been ignored actual use by evaluation object and structure to its active material impact.
For automobile with the activity rating of catalytic cleaner occurred relevant with the motor car engine actual exhaust air as source of the gas, the full-scale catalyst converter that uses with reality is as by the report of the testing apparatus of evaluation object.As document " the performance evaluation technology and the test method of automotive catalyst " " automotive engineering " 1999 (Vol.21).But, because the greatest differences that exists between motorcycle engine and the motor car engine makes the motorcycle catalytic cleaner directly to test on automobile correlation test device.Main cause is: motorcycle had both used four stroke engine, used two stroke engine again.There is difference in essence in this motor of two types at aspects such as taking a breath, burn and be lubricated, this directly causes the greatest differences of exhaust gas composition, and automobile all uses four stroke engine; In addition, motor car engine is based on water-cooled, electronic fuel injection fuel feeding, engine displacement big (with liter), motorcycle engine is based on air-cooled, Carburetor fuel feeding, discharge capacity little (with milliliter), and this also directly causes aspects such as its exhaust gas composition, flow, temperature widely different.So the correlation test device of automobile can't directly carry out evaluation test to motorcycle catalytic cleaner activity.
Summary of the invention
The objective of the invention is to actual service conditions at the motorcycle catalytic cleaner, invent a kind of with the motorcycle engine exhaust as source of the gas, the full-scale catalyst converter that reality is used reaches under the simulation actual service conditions the active purpose of accurately estimating of motorcycle catalytic cleaner as the active evaluation test device of evaluation object.
The present invention is made up of air fuel ratio measurement and control subsystem, waste gas heat switching subsystem, flow measurement and control subsystem, waste gas Direct Sampling and analytical system; Each system can require according to the difference of test specification to be used alone or in combination; Select and the source of the gas of the actual matching used motorcycle engine of catalyst converter, measure the testing apparatus of catalyst converter activity as generation waste gas.
Concrete technology is as follows:
1. air fuel ratio is measured and control subsystem is: measurement engine exhaust composition was also adjusted measurement and control gear to reach desired value to exhaust gas constituents before the air fuel ratio measuring point.Select the catalyst converter actual match two, four-stroke engine for motor cycle, be fixed in engine pedestal and be connected with dynamometer, the power that sends is absorbed by dynamometer, its running operating mode is controlled by dynamometer, utilizes the waste gas source of the gas of the exhaust of engine running generation as the catalyst converter active evaluation test;
2. develop respectively at the characteristics of the existing oil supply system of two stroke four stroke engine respectively that air fuel ratio is measured, control subsystem, to reach the control that inflow is tried the waste gas air fuel ratio of catalyst converter;
3. at the lost relatively large characteristics exploitation of motorcycle engine exhaust gas heat exhaust heat switching subsystem, to reach adjustment and control to delivery temperature;
4. and characteristics exploitation that pulse big little at the motorcycle engine air displacement is suitable for the gas flow measurement and the control subsystem of the big pulsation of small flow, to reach the control to the exhaust gas flow that flows through catalyst converter;
5. at the concentration of motorcycle engine exhaust gas composition and wherein more serious granular material discharged characteristics, exploitation exhaust Direct Sampling system also matches multrirange exhaust concentration analyzer, has constituted waste gas Direct Sampling and analyzing subsystem.
The invention has the advantages that: use the actual supporting motor of catalyst converter as the waste gas source of the gas, realized accurate simulation the catalyst converter service condition; Developed be fit to two, the multiple air fuel ratio of four stroke engine measures and controlling schemes, can realize air fuel ratio control neatly; Exhaust-heat exchanger with intensification and cooling function has been realized the flexible control of exhaust gas temperature; The engine breathing measuring system of subsidiary pressure stabilizer can accurately be measured the intake and exhaust flow of the bigger pulsation of motorcycle engine; Direct Sampling switched system and exhaust-gas analyzer can be realized waste gas sampling and concentration analysis flexibly, and then calculate purification ratio by harmful gas concentration difference before and after calculating catalyst converter.Following Fig. 9, Figure 10, Figure 11, Figure 12 are native system to two, 4 stroke motorcycle is with the evaluation test result of catalyst converter light off characteristics and air fuel ratio characteristic.
Description of drawings Fig. 1: motorcycle catalytic cleaner activation evaluating installation drawing 2: four-stroke engine exhaust air-supplementing method air-fuel ratio is measured and control embodiment Fig. 3: two-stroke motorcycle engine measuring air and fuel consume theoretical air-fuel ratio are used exemplary plot 4: exhaust heat exchanger is used exemplary plot 5: four-stroke engine extraction flow measuring system is used exemplary plot 6: two stroke engine inlet and outlet Flow Measuring System is used exemplary plot 7: a-b box structure applications exemplary plot 8: sampling apparatus structure applications exemplary plot 9: four-stroke engine is with catalyst converter light off characteristics Figure 10: two stroke engine is with catalyst converter light off characteristics Figure 11: four-stroke engine is with catalyst converter air-fuel ratio characteristic Figure 12: two stroke engine is with catalyst converter air-fuel ratio characteristic description of reference numerals:
1: four stroke engine 23: fuel consumption meter
2: dynamometer 24: flowmeter and secondary meter thereof
3: fuel tank 25: pressure stabilizer
4: fuel consumption meter 26: two stroke engine
5: flow control valve 27: dynamometer
6: heating equipment 28: flow control valve
7: cooling unit 29: heating equipment
8: air fuel ratio measuring device 30: cooling unit
9: catalyst container 31: the air fuel ratio measuring device
10: cooling unit 32: cooler
11: pressure stabilizer 33: pressure stabilizer
12: flowmeter and secondary meter 34 thereof: catalyst container
13: oil-less pump 35: flowmeter and secondary meter thereof
14: decompression and flow control valve 36: thermostatic control system
15: flow measuring device 37: strainer
16: a-b box 38: vacuum gauge
17: sampling apparatus 39: thermoelectrical magnetic valve
18: heating pipe 40: the refrigeration dehydrater
19: flowmeter 41: pump
20: exhaust-gas analyzer 42: secondary filter
21: hot type sampling conduit 43: solenoid valve
22: fuel tank 44: motor
Embodiment is further described below in conjunction with 1 pair of this explanation of accompanying drawing: one, air fuel ratio is measured and the control testing apparatus
Air fuel ratio is measured and control subsystem is: measurement engine exhaust composition was also adjusted measurement and control gear to reach desired value to exhaust gas constituents before the air fuel ratio measuring point.According to the difference of engine strokes, the structure of this subtense angle is distinguished to some extent.
1. the four stroke engine air fuel ratio is measured:
Four stroke engine 1 is fixed in stand and is connected by shaft coupling with dynamometer 2.Fuel tank 3 is flowed through fuel consumption meter 4 to engine oil by fuel oil, and dynamometer 2 is responsible for control motor 1 running operating mode and absorbed power.The exhaust that produces in four stroke engine 1 operation process is crossed the laggard catalyst container 9 of going into the catalyst converter place of heat-exchange system through channel flow, and air fuel ratio measuring device 8 was installed before catalyst container 9, gathers and shows the air fuel ratio measurement result as wide territory air-fuel ratio sensor etc.
As mentioned above, the air fuel ratio measuring device 8 before catalyst converter also can change the sampling probe that multicomponent waste gas divides instrument into except that the air-fuel ratio sensor of wide territory.The multicomponent waste gas that has divides instrument not only to have the function of gathering and analyzing the preceding exhaust gas constituents of catalyst converter, utilize exhaust gas constituents to calculate and show the function of air fuel ratio in addition, relevant mathematical model can be found in the relevant books of internal-combustion engine, so also can calculate air fuel ratio voluntarily according to exhaust gas concentration.
2. four stroke engine air fuel ratio control:
At present most homemade four-stroke engine for motor cycle adopt the Carburetor fuel feeding.Carburetor all has the air fuel ratio regulating mechanism, adjusts screw etc. as oil-pin position, main jet and mixed gas.Can directly utilize these engine air-fuel ratio to be adjusted so that mechanism to be arranged.
On the method basis of aforesaid control air fuel ratio, increase the device that in exhaust, replenishes air and can further improve the control effect.That is, adjust Carburetor in advance, make engine air-fuel ratio adjust to dense partially state in advance.Oil-less pump 13 is gone into the replenish air of certain flow in the exhaust through decompression and flow control valve 14 and flow measuring device 15.Under the monitoring of air fuel ratio measuring device 8, can realize control to air fuel ratio to flow of air supply adjustment.The four stroke engine air fuel ratio is measured and is controlled referring to Fig. 2.
In addition, can adopt the method for tonifying Qi between Carburetor and motor, promptly so-called electronic controlled carburetor, control air fuel ratio.
Simultaneously, along with popularizing gradually of homemade motorcycle electric control fuel oil jet system, can directly reach the air fuel ratio control target by the parameter of adjusting electronic fuel injection.3. two stroke engine air fuel ratio measuring device:
There is very big difference between two stroke engine gas exchange process and the four stroke engine.That is, two stroke engine utilizes fresh fuel-air mixture that in-cylinder combustion waste gas is scanned out, and follows this process to have the fresh fuel-air mixture of part and just discharges motor in company with waste gas without burning.For this reason, this testing apparatus has designed corresponding air fuel ratio measuring device to the ventilation characteristics of two-stroke motorcycle motor.
Two stroke engine 26 is fixed in engine pedestal, links to each other with dynamometer 27 by shaft coupling.The running operating mode and the absorbed power of dynamometer 27 control two stroke engines 26.The exhaust that produces in two stroke engine 26 operation process is as the source of the gas of catalytic cleaner activation evaluating test.
As shown in Figure 3, fuel tank 22 is flowed through fuel consumption meter 23 to engine oil by fuel oil, constitutes engine fuel and consumes measurement subsystem; Air inlet pressure stabilizing chamber 25 and flowmeter and secondary meter 24 thereof are installed in engine aspirating system, are constituted engine air and consume measurement subsystem.Measure fuel consume and air consumption in the engine working process simultaneously, thereby the two is divided by and obtains the air fuel ratio of motor this moment.
Before two-stroke catalyst container 34, also air fuel ratio measuring device 31 can be installed.Concrete structure and test philosophy are with the corresponding testing apparatus of four stroke engine.4. two stroke engine air-fuel ratio control device:
The control of two stroke engine air fuel ratio is different according to the difference of method of measurement.
Measure at the same time under the air fuel ratio test method situation of engine fuel and air consumption, can directly adjust carburetor needle valve position, main jet, mixed gas adjustment screw and engine operating condition etc. influences the structural parameter of mixture strength, or use electronic controlled carburetor, electric control fuel oil jet system etc. reach the control to the two stroke engine air fuel ratio.
When utilizing two stroke engine exhaust gas composition theoretical air-fuel ratio or installation air fuel ratio instrument is directly measured air fuel ratio in vent systems, except that can using aforesaid air/fuel ratio control method, can also adopt the mode of the gas that in exhaust, covers in the four stroke engine auxiliary fuel supply-system to realize.Two, thermometry and control subsystem:
In order to realize that heat-exchange system is necessary to the control of catalyst container inlet exhaust gas temperature.The waste gas heat exchange system is made of intensification and cooling device and flow control valve before catalyst converter.
The heat-exchange system structural similarity of four-stroke and two-stroke pilot system is that example is illustrated with the four-stroke heat-exchange system only here.
This heat-exchange system has heating equipment 6 and cooling unit 7, flow control valve 5 controls flow into the assignment of traffic ratio of heating equipment 6 and cooling unit 7, thermocouple was installed in exhaust duct before catalyst container 9 is measured exhaust gas temperature, be implemented in the temperature that reaches expection after the waste gas that comes self-heating apparatus 6 and cooling unit 7 before the catalyst container 9 mixes thereby adjust flow control valve 5 and heating and cooling intensity.
Wherein in the two-stroke pilot system: heating equipment 29 is the same 6, cooling unit 30 is the same 7, flow control valve 28 the same 5.
The catalytic cleaner ignition sharply raises owing to exothermic reaction makes exhaust gas temperature later.For the protection to the extraction flow measuring system, this device is installed a cooling unit 10 in catalyst container 9 backs.Concrete mode is referring to Fig. 4.Three, throughput is measured and control subsystem:
Four-stroke and two stroke engine are measured extraction flow can be for the feedback signal of engine exhaust flow control and the usefulness of calculating catalyst converter air speed calculating; The two stroke engine charge flow rate is measured and can be followed fuel consume to measure formation air fuel ratio measuring system.
Flow control system is by the aperture of control bypath valve, the aperture and the engine operating condition of heating and cooling valve, reaches the flow control device that control flows is crossed the catalytic waste gas flow.
The structural similarity of four-stroke and two-stroke inlet and outlet Flow Measuring System is that example is illustrated with four-stroke extraction flow measuring system only here.
The motorcycle engine air displacement causes extraction flow little for a short time, and the present in addition homemade motorcycle engine overwhelming majority is a single-cylinder engine, causes the exhaust pulsation bigger.One exhaust pressure stabilizer 11 is installed to reach the effect that suppresses the exhaust pulsation in cooling unit 10 backs for this reason.In exhaust pressure stabilizer 11 backs flowmeter and secondary meter 12 thereof are installed.This device can be realized the measurement function to extraction flow.
Wherein in the two-stroke pilot system: pressure stabilizer 33 is the same 11, cooling unit 32 is the same 10, amount is taken into account its secondary meter 35 the same 12.
Thereby control the air speed of tested catalytic cleaner in order to control the engine exhaust flow, this testing apparatus is installed bypass valve 5 in vent systems, with a part of engine exhaust bypass.This device cooperates the adjustment to engine operating condition, realizes the control to extraction flow under the monitoring of extraction flow device, and then realizes the control to tested catalyst converter air speed.
Inlet and outlet flow measurement and control gear schematic representation also can be referring to Fig. 5,6.Four, waste gas Direct Sampling and analyzing subsystem
Waste gas Direct Sampling and analytical system are that a waste gas thief hatch is respectively installed in the front and back of catalyst container, and the waste gas that each thief hatch flows out is divided into two, and wherein one the tunnel continues to enter the HC ANALYZER through filtering along hot channel; Another road is passed through flowmeter and CO, CO respectively after filtering, dewater through sampling apparatus
2, O
2Be connected with ANALYZER such as NOx, thereby realize exhaust-gas analyzer Direct Sampling and measurement of concetration.
Four respectively install a waste gas thief hatch towards the front and back of catalyst container 9 and two-stroke catalyst container 34.The multichannel waste gas that thief hatch takes out enters a-b box 16 along hot type sampling conduit 21.Wherein have only one road waste gas can pass through a-b box 16, this road waste gas is divided into two subsequently, and wherein one tunnel process heating pipe 18 enters HFID (heating hydrogen flame ion is surveyed) type HC ANALYZER; Another road is passed through flowmeter and CO, CO respectively after dewatering through sampling apparatus 17
2, O
2Be connected with ANALYZER 20 with NOx etc. and flowmeter 19, thereby realize changeable Direct Sampling and the measurement of concetration of single cover exhaust-gas analyzer multichannel waste gas.
A-b box 16 structural representations see also Fig. 7.The wall of a-b box is a thermal-protective material, can play insulation effect.Box house is installed an Electric heating appliance and is passed through the temperature transducer formation closed loop spin manifold temperature control system 36 of box house; Each gas circuit all is connected in series strainer 37, to reach the filtering effect.The clogged filter situation is by vacuum gauge 38 monitoring of installing on the pipeline; The break-make of gas circuit is realized by thermoelectrical magnetic valve 39.
The schematic representation of sampling apparatus 17 is referring to Fig. 8.Waste gas is through strainer filtering larger particles; Through condenser 40 to dewater; The effect of finishing the waste gas sampling, filtering and dewater through the diaphragm pump 41 and the secondary filter 42 of translator 44 then.With after solenoid valve 43 is assigned to each exhaust-gas analyzer.
Claims (10)
1. motorcycle catalytic cleaner activation evaluating testing apparatus, it is characterized in that: it is made up of air fuel ratio measurement and control subsystem, waste gas heat switching subsystem, flow measurement and control subsystem, waste gas Direct Sampling and analytical system; Each system can be used alone or in combination according to the requirement of test specification; Select actual matching used motorcycle engine as the source of the gas that produces waste gas, measure the testing apparatus of catalyst converter activity.
2. a kind of motorcycle catalytic cleaner activation evaluating testing apparatus according to claim 1, it is characterized by described air fuel ratio measurement and control subsystem is: utilize air-fuel ratio sensor or measure the engine exhaust composition to calculate air fuel ratio, replenish the air of flow-controllable before the air fuel ratio measuring point to the engine exhaust pipeline, realize measurement and the control gear of control to reach desired value to air fuel ratio.
3. a kind of motorcycle catalytic cleaner activation evaluating testing apparatus according to claim 1 is characterized in that: measure engine fuel and air consumption simultaneously, calculate air fuel ratio.
4. a kind of motorcycle catalytic cleaner activation evaluating testing apparatus according to claim 1 is characterized by described waste gas heat switching subsystem and is made of intensification and cooling device before catalyst converter.
5. according to claim 1 or 4 described a kind of motorcycle catalytic cleaner activation evaluating testing apparatuss, it is characterized in that:, realize the exhaust gas temperature liftings as required after two strands of waste gas of control are joined by the exhaust gas flow of control valve aperture control inflow heating equipment and cooling unit.
6. a kind of motorcycle catalytic cleaner activation evaluating testing apparatus according to claim 1, it is characterized by described flow measurement and control subsystem is by the aperture of control bypath valve, the aperture and the engine operating condition of heating and cooling valve, reaches the flow control device that control flows is crossed the catalytic waste gas flow.
7. according to claim 1 or 6 described a kind of motorcycle catalytic cleaner activation evaluating testing apparatuss, it is characterized in that: motor inlet and outlet flow measuring device with pressure stabilizer.
8. a kind of motorcycle catalytic cleaner activation evaluating testing apparatus according to claim 1, it is characterized in that described waste gas Direct Sampling and analytical system are that a waste gas thief hatch is respectively installed in the front and back of catalyst container, the waste gas that each thief hatch flows out is divided into two, wherein one the tunnel continues to enter the HC ANALYZER through filtering along hot channel; Another road is passed through flowmeter and CO, CO respectively after filtering, dewater through sampling apparatus
2, O
2Be connected with ANALYZER such as NOx, thereby realize exhaust-gas analyzer Direct Sampling and measurement of concetration.
9. according to claim 1 or 8 described a kind of motorcycle catalytic cleaner activation evaluating testing apparatuss, it is characterized in that and sampling conduit can be entered a-b box, the a-b box wall is a thermal-protective material, and box house is installed an Electric heating appliance and passed through the temperature transducer formation closed loop spin manifold temperature control system of box house; Each gas circuit all is connected in series filter cleaner, and the clogged filter situation is by the vacuum gauge monitoring of installing on the pipeline; The break-make of gas circuit is realized by thermoelectrical magnetic valve.
10. a kind of motorcycle catalytic cleaner activation evaluating testing apparatus according to claim 9 is characterized in that described sampling apparatus is: waste gas is through strainer filtering larger particles; Through condenser to dewater; Finish waste gas sampling and smart filter through diaphragm pump and fine cleaner then, with after solenoid valve is assigned to each exhaust-gas analyzer; Sampling apparatus with multistage filtering.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021163529A CN1181259C (en) | 2002-03-28 | 2002-03-28 | Evaluating tester for catalytic cleaner activity of motorcycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021163529A CN1181259C (en) | 2002-03-28 | 2002-03-28 | Evaluating tester for catalytic cleaner activity of motorcycle |
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| CN1369627A true CN1369627A (en) | 2002-09-18 |
| CN1181259C CN1181259C (en) | 2004-12-22 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131870A (en) * | 2014-08-11 | 2014-11-05 | 安徽艾可蓝节能环保科技有限公司 | Aging air supplementing device for three-way catalytic converter bench test |
| CN104634807A (en) * | 2015-01-11 | 2015-05-20 | 浙江大学 | Honeycomb-shaped SCR catalyst rapid aging experimental device |
| CN105223022A (en) * | 2015-11-17 | 2016-01-06 | 潍柴动力股份有限公司 | A kind of catalyzer checking device based on engine pedestal and method |
| CN107327335A (en) * | 2017-06-16 | 2017-11-07 | 苏州博菡环保科技有限公司 | Engine vent gas catalytic cleaner activation evaluating system |
| CN108131189A (en) * | 2018-01-31 | 2018-06-08 | 安徽江淮汽车集团股份有限公司 | After-treatment technics test system |
| CN109958551A (en) * | 2017-12-14 | 2019-07-02 | 奥特润株式会社 | The control method and engine of Water jet eductors |
| CN116044591A (en) * | 2021-10-28 | 2023-05-02 | 天纳克汽车经营有限公司 | System and method for performing lambda control of a gasoline engine using a burner |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103656454B (en) * | 2013-12-15 | 2015-08-26 | 徐士魁 | A kind of medicine for the treatment of infantile malnutrition and preparation method thereof |
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2002
- 2002-03-28 CN CNB021163529A patent/CN1181259C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131870A (en) * | 2014-08-11 | 2014-11-05 | 安徽艾可蓝节能环保科技有限公司 | Aging air supplementing device for three-way catalytic converter bench test |
| CN104634807A (en) * | 2015-01-11 | 2015-05-20 | 浙江大学 | Honeycomb-shaped SCR catalyst rapid aging experimental device |
| CN105223022A (en) * | 2015-11-17 | 2016-01-06 | 潍柴动力股份有限公司 | A kind of catalyzer checking device based on engine pedestal and method |
| CN107327335A (en) * | 2017-06-16 | 2017-11-07 | 苏州博菡环保科技有限公司 | Engine vent gas catalytic cleaner activation evaluating system |
| CN109958551A (en) * | 2017-12-14 | 2019-07-02 | 奥特润株式会社 | The control method and engine of Water jet eductors |
| CN109958551B (en) * | 2017-12-14 | 2021-03-23 | 现代凯菲克株式会社 | Control method of water-spraying ejector and engine |
| CN108131189A (en) * | 2018-01-31 | 2018-06-08 | 安徽江淮汽车集团股份有限公司 | After-treatment technics test system |
| CN116044591A (en) * | 2021-10-28 | 2023-05-02 | 天纳克汽车经营有限公司 | System and method for performing lambda control of a gasoline engine using a burner |
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| CN1181259C (en) | 2004-12-22 |
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