CN108760328A - A kind of gasoline engine catalyst space velocities test method - Google Patents
A kind of gasoline engine catalyst space velocities test method Download PDFInfo
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- CN108760328A CN108760328A CN201810552960.7A CN201810552960A CN108760328A CN 108760328 A CN108760328 A CN 108760328A CN 201810552960 A CN201810552960 A CN 201810552960A CN 108760328 A CN108760328 A CN 108760328A
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- catalyst
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- space velocities
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The present invention relates to a kind of gasoline engine catalyst space velocities test methods, on automotive engine test bench, adjust tested engine and make the capacity of tested engine reach maximum and record；Keep being tested engine operation enough for a long time, when detecting that the bed temperature of the catalyst of setting volume reaches 500 DEG C, the data of the data of the first data collecting instrument of record catalyst front end and the second data collecting instrument of catalyst rear end；Calculate the transformation efficiency under current exhaust flow；Change catalyst volume until η is close and is more than 95%；And record the optimum catalyst volume that catalyst volume at this time is displacement engine post-processing.End data before and after catalyst of the technical program by acquiring the tested engine under specified conditions, and by calculating the discharge standard that can be obtained closest to rules and regulations, and ensure the optimal proportion of catalyst volume and capacity.
Description
Technical field
The invention belongs to Engine Block Test technical fields, particularly relate to a kind of gasoline engine catalyst space velocities test method.
Background technology
Six light-duty vehicle discharge standard of state changes test loop, and WLTC is changed to by pervious NEDC (five discharge cycle of state)
(six discharge cycle of state), WLTC cycles are recycled compared to NEDC, and transient condition is more, speed higher, acceleration bigger.
In order to ensure that gaseous effluent is no more than regulation limit value requirement, catalyst converter needs good airspeed performance.Catalysis
Device air speed is the ratio of the gas volume and carrier bulk that enter carrier in the unit interval under prescribed conditions, catalyst converter air speed
The ability of catalyst treatment gas is reacted, air speed is divided into volume space velocity and mass space velocity, the higher expression catalysis of air speed of permission
Agent activity higher.For given carrier, the big explanation of air speed is more by the gas of catalyst, gas stop on a catalyst when
Between it is short, reaction depth is shallow, on the contrary, the air speed small meaning reaction time is long, reduces the transformation efficiency that air speed is conducive to provide catalyst,
But lower air speed means that the quantity of this catalyst in the case of same treatment amount is more, carrier bulk is larger, from cost
On be it is unreasonable, so the airspeed performance of catalyst to select carrier volume, bullion content it is most important, do not have also at present
There is ripe method to measure a kind of airspeed performance of catalyst.
Invention content
The object of the present invention is to provide a kind of gasoline engine catalyst space velocities test methods, are not measured with solving the prior art
The problem of method of the airspeed performance of catalyst.
The present invention is achieved by the following technical solutions：
A kind of gasoline engine catalyst space velocities test method, includes the following steps：
1) it on automotive engine test bench, adjusts tested engine and the capacity of tested engine is made to reach QmaxAnd remember
Record；
2) keep being tested engine operation enough for a long time, as the bed temperature T for the catalyst V1 for detecting setting volumebedIt reaches
When to 500 DEG C, the second data collecting instrument of the data m1 and catalyst rear end of the first data collecting instrument of record catalyst front end
Data m2；Calculate the transformation efficiency under current exhaust flow：
η=(m1-m2)/m1；
3) change catalyst volume V2, repeat step 2) until η is close and is more than 95%；And the caltalyst of record at this time
Product V2 is the optimum catalyst volume of displacement engine post-processing.
In step 2), if the remote > 95% of η, the volume for changing catalyst is V2, and makes V2 < V1, repeats step 2 until η connects
Closely and it is more than 95%.
In step 2), if η < 95%, the volume for changing catalyst is V2, and makes V2 > V1, and repetition walks poly- 2, until η connects
Closely and it is more than 95%.
By adjusting the rotating speed of tested engine, load or other relevant parameters the capacity of tested engine is reached
Qmax。
Volume flow of the engine under maximum capacity is Vmax=Qmax/ ρ, ρ are the density of mixed gas, at this time should
Gasoline engine catalyst space velocities SV=Vmax/V2.
The beneficial effects of the invention are as follows：
End data before and after catalyst of the technical program by acquiring the tested engine under specified conditions, and pass through calculating
The discharge standard closest to rules and regulations can be obtained, and ensures the optimal proportion of catalyst volume and capacity.
Description of the drawings
Fig. 1 is catalyst space velocities test schematic diagram of the present invention.
Reference sign
1 tested engine, 2 first pipelines, 3 catalyst tanks, 4 second pipelines, 5 first data collecting instruments, 6 second data are adopted
Collect instrument.
Specific implementation mode
Carry out the technical solution that the present invention will be described in detail by the following examples, embodiment below is merely exemplary, only
It can be used for explanation and illustration technical scheme of the present invention, and be not to be construed as the limitation to technical solution of the present invention.
The measurement of the application be in the case that NEDC (five discharge standard of state) cycle under engine maximum capacity survey
Examination, testboard bay used in this application be the prior art, be not this application claims technical characteristic, only be realize to quilt
The component that test engine provides support and is related to measuring is not improved in this application, therefore, the application's
Technical solution is without explanation.
In the application, as shown in Figure 1, the exhaust outlet of tested engine 1 is connect by the first pipeline 2 with catalyst tank 3, urge
The outlet of agent tank 3 is connect by the second pipeline 4 with exhaust pipe, and catalyst is provided in catalyst tank 3.In tested engine
It is provided with the first data collecting instrument 5 on the first pipeline 2 between 1 exhaust outlet and catalyst tank 3, in catalyst tank and exhaust pipe
Between the second pipeline 4 on be provided with the second data collecting instrument 6.
The application provides a kind of gasoline engine catalyst space velocities test method, includes the following steps：
1) it on automotive engine test bench, adjusts tested engine and the capacity of tested engine is made to reach QmaxAnd remember
Record；Adjustment in the present embodiment is to make tested engine by adjusting relevant parameters such as the rotating speed of tested spreadsheet engine and loads
Capacity reaches Qmax。
2) keep being tested engine operation enough for a long time, as the bed temperature T for the catalyst V1 for detecting setting volumebedIt reaches
When to 500 DEG C, the second data collecting instrument of the data m1 and catalyst rear end of the first data collecting instrument of record catalyst front end
Data m2；Calculate the transformation efficiency under current exhaust flow：
η=(m1-m2)/m1；When carrying out the test of first time, transformation efficiency may also be more than 95% and be much larger than
95%, however, to ensure that the optimal proportion of catalyst volume and capacity, in test, it is desirable that transformation efficiency is more than and approaches
95%, rather than conversion ratio is more than 95% excessively, this can lead to the waste of catalyst amount.Certain conversion ratio is much larger than 95%
It can realize the raising of discharge standard.
3) change catalyst volume V2, repeat step 2) until η is close and is more than 95%；And the caltalyst of record at this time
Product V2 is the optimum catalyst volume of displacement engine post-processing.
In step 2), if the remote > 95% of η, the volume for changing catalyst is V2, and makes V2 < V1, repeats step 2 until η connects
Closely and it is more than 95%.
In step 2), if η < 95%, the volume for changing catalyst is V2, and makes V2 > V1, and repetition walks poly- 2, until η connects
Closely and it is more than 95%.
By adjusting the rotating speed of tested engine, load or other relevant parameters the capacity of tested engine is reached
Qmax。
Volume flow of the engine under maximum capacity is Vmax=Qmax/ ρ, ρ are the density of mixed gas, at this time should
Gasoline engine catalyst space velocities SV=Vmax/V2.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And deformation, the scope of the present invention are extremely equally limited by appended claims.
Claims (5)
1. a kind of gasoline engine catalyst space velocities test method, which is characterized in that include the following steps：
1) it on automotive engine test bench, adjusts tested engine and the capacity of tested engine is made to reach QmaxAnd it records；
2) keep being tested engine operation enough for a long time, as the bed temperature T for the catalyst V1 for detecting setting volumebedReach 500
DEG C when, the data of the data m1 of the first data collecting instrument of record catalyst front end and the second data collecting instrument of catalyst rear end
m2；Calculate the transformation efficiency under current exhaust flow：
η=(m1-m2)/m1；
3) change catalyst volume V2, repeat step 2) until η is close and is more than 95%；And the catalyst volume V2 of record at this time
For the optimum catalyst volume of displacement engine post-processing.
2. gasoline engine catalyst space velocities test method according to claim 1, which is characterized in that in step 2), if the remote > of η
95%, the volume for changing catalyst is V2, and makes V2 < V1, repeats step 2 until η is close and is more than 95%.
3. gasoline engine catalyst space velocities test method according to claim 1, which is characterized in that in step 2), if η <
95%, the volume for changing catalyst is V2, and makes V2 > V1, and repetition walks poly- 2, until η is close and is more than 95%.
4. gasoline engine catalyst space velocities test method according to claim 1, which is characterized in that start by adjusting tested
Rotating speed, load or the other relevant parameters of machine make the capacity of tested engine reach Qmax。
5. gasoline engine catalyst space velocities test method according to any one of claim 1 to 3, which is characterized in that start
Volume flow of the machine under maximum capacity is Vmax=Qmax/ ρ, ρ are the density of mixed gas, at this time the gasoline engine catalyst
Air speed SV=Vmax/V2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810552960.7A CN108760328A (en) | 2018-05-31 | 2018-05-31 | A kind of gasoline engine catalyst space velocities test method |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564644A (en) * | 2008-04-23 | 2009-10-28 | 福特全球技术公司 | Selective catalytic reduction system and catalyst system |
| CN101798947A (en) * | 2009-01-16 | 2010-08-11 | 通用汽车环球科技运作公司 | Robust design of diagnostic enabling conditions for scr nox conversion efficiency monitor |
| CN102032032A (en) * | 2009-09-29 | 2011-04-27 | 通用汽车环球科技运作公司 | Method and apparatus for monitoring a hydrocarbon-selective catalytic reduction device |
| CN102817681A (en) * | 2012-07-26 | 2012-12-12 | 北京理工大学 | Solid SCR (selective catalytic reduction) control system for diesel engine |
| CN103644020A (en) * | 2013-12-24 | 2014-03-19 | 北京科领动力科技有限公司 | Urea water solution spraying rate control method of diesel SCR system |
| CN104514603A (en) * | 2014-12-29 | 2015-04-15 | 潍柴动力股份有限公司 | SCR (Selective Catalytic Reduction) control method and 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 |
| CN105241654A (en) * | 2015-10-27 | 2016-01-13 | 潍柴动力股份有限公司 | SCR catalyst endurance performance test method |
| CN106703957A (en) * | 2016-11-29 | 2017-05-24 | 潍柴动力空气净化科技有限公司 | SCR (Selective Catalytic Reduction) catalyst transient characteristic evaluation method and test device for SCR catalyst transient characteristic evaluation |
| CN106988841A (en) * | 2016-01-21 | 2017-07-28 | 通用汽车环球科技运作有限责任公司 | The control of hydrocarbon injection rate in gas deflation assembly |
| CN107218107A (en) * | 2017-06-02 | 2017-09-29 | 河南科技大学 | A kind of catalyst converter and the internal combustion engine and vehicle using the catalyst converter |
-
2018
- 2018-05-31 CN CN201810552960.7A patent/CN108760328A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564644A (en) * | 2008-04-23 | 2009-10-28 | 福特全球技术公司 | Selective catalytic reduction system and catalyst system |
| CN101798947A (en) * | 2009-01-16 | 2010-08-11 | 通用汽车环球科技运作公司 | Robust design of diagnostic enabling conditions for scr nox conversion efficiency monitor |
| CN102032032A (en) * | 2009-09-29 | 2011-04-27 | 通用汽车环球科技运作公司 | Method and apparatus for monitoring a hydrocarbon-selective catalytic reduction device |
| CN102817681A (en) * | 2012-07-26 | 2012-12-12 | 北京理工大学 | Solid SCR (selective catalytic reduction) control system for diesel engine |
| CN103644020A (en) * | 2013-12-24 | 2014-03-19 | 北京科领动力科技有限公司 | Urea water solution spraying rate control method of diesel SCR system |
| CN104514603A (en) * | 2014-12-29 | 2015-04-15 | 潍柴动力股份有限公司 | SCR (Selective Catalytic Reduction) control method and device |
| CN105241654A (en) * | 2015-10-27 | 2016-01-13 | 潍柴动力股份有限公司 | SCR catalyst endurance performance test method |
| 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 |
| CN106988841A (en) * | 2016-01-21 | 2017-07-28 | 通用汽车环球科技运作有限责任公司 | The control of hydrocarbon injection rate in gas deflation assembly |
| CN106703957A (en) * | 2016-11-29 | 2017-05-24 | 潍柴动力空气净化科技有限公司 | SCR (Selective Catalytic Reduction) catalyst transient characteristic evaluation method and test device for SCR catalyst transient characteristic evaluation |
| CN107218107A (en) * | 2017-06-02 | 2017-09-29 | 河南科技大学 | A kind of catalyst converter and the internal combustion engine and vehicle using the catalyst converter |
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Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Applicant before: Anhui Jianghuai Automobile Group Limited by Share Ltd |
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Application publication date: 20181106 |