CN109443775A - Simulate the test method and device of hot WHTC circulation in the cold and hot WHTC circulation of diesel engine - Google Patents
Simulate the test method and device of hot WHTC circulation in the cold and hot WHTC circulation of diesel engine Download PDFInfo
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- CN109443775A CN109443775A CN201910001388.XA CN201910001388A CN109443775A CN 109443775 A CN109443775 A CN 109443775A CN 201910001388 A CN201910001388 A CN 201910001388A CN 109443775 A CN109443775 A CN 109443775A
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- 230000004087 circulation Effects 0.000 title claims abstract description 57
- 238000010998 test method Methods 0.000 title claims abstract description 15
- 239000003054 catalyst Substances 0.000 claims abstract description 40
- 238000012360 testing method Methods 0.000 claims abstract description 29
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 24
- 238000004088 simulation Methods 0.000 claims abstract description 22
- 238000002474 experimental method Methods 0.000 claims abstract description 9
- 238000007598 dipping method Methods 0.000 claims abstract description 8
- 238000004378 air conditioning Methods 0.000 claims description 12
- 238000002203 pretreatment Methods 0.000 claims description 7
- 238000009790 rate-determining step (RDS) Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 230000003584 silencer Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract description 6
- 239000004202 carbamide Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
- G01M15/02—Details or accessories of testing apparatus
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Testing Of Engines (AREA)
Abstract
The invention discloses the test method and device of hot WHTC circulation in a kind of simulation diesel engine cold and hot WHTC circulation, test method include the following steps: to control according to the rules diesel engine the lower intake air temperature of declared working condition, intake vacuum, in it is cold after temperature and exhaust back pressure meet experimental condition；According to the WHTC cyclic program that rack is set, the state of cyclic operation of rear 600 ± 10s in WHTC cyclic program is selected to be tested, to pre-process to SCR catalyst unit；After completing the pretreatment of SCR catalyst unit, 10 ± 1min of diesel engine hot dipping is carried out immediately, using the pretreatment as diesel engine hot exposure WHTC cyclic test；Formal hot WHTC cyclic test step is to start rack WHTC cyclic program at once after hot dipping expires foot and carry out formal hot WHTC cyclic test.Make the temperature of hot WHTC circulation SCR catalyst unit consistent with the temperature of WHTC circulation hot in cold and hot WHTC circulation whereby, SCR catalyst unit efficiency can be given full play to, reduce urea consumption, energy conservation and environmental protection can save a large number of experiments time.
Description
Technical field
The present invention relates to derv fuel diesel engine benches to test field, cold and hot especially with regard to a kind of simulation diesel engine
The test method and device of hot WHTC circulation in WHTC (transient-cycle in point state test) circulation.
Background technique
Six stage emission regulation of existing derv fuel diesel engine state is required to meet cold and hot WHTC emission limit, therefore is needed
Cold and hot WHTC last row calibration is carried out to diesel machine, and catalyst converter SCR (selective catalytic reduction) catalyst unit is to nitrogen oxidation
The transformation efficiency of object is very sensitive to temperature, especially cold stage.When for the calibration of cold and hot WHTC last row, to improve exploitation effect
Rate usually demarcates pure hot WHTC, and hot WHTC test cycle is entered under different catalyst temperatures, will lead to heat
Temperature Distribution in state WHTC test cycle in SCR catalyst unit is also different, if practical cold and hot WHTC circulation cannot be simulated strictly according to the facts
In hot WHTC circulation catalyst converter in profiling temperatures, then will lead to the urea injecting quantity demarcated when calibration and increase,
The result of final cold and hot WHTC can be smaller, leads the problems such as NH_3 leakage is big, or the urea injecting quantity demarcated when calibration is caused to reduce,
The result of final cold and hot WHTC is not up to standard.
To solve the above problems, for being capable of the practical cold and hot WHTC circulation of accurate simulation in the cold and hot WHTC calibration of diesel machine
Hot entry condition, hot circulation in the SCR catalyst unit temperature and practical cold and hot WHTC circulation when recycling hot WHTC
Unanimously, way general at present: first is that being catalyzed according to SCR when entering operating condition in hot circulation in practical cold and hot WHTC circulation single
The temperature of first entrance, when the temperature of SCR catalyst unit entrance is close to the temperature, startup program carries out pure hot WHTC and tests
Card, in the method it is also possible that the SCR catalyst unit temperature and practical cold and hot WHTC that obtain when hot WHTC is recycled merely recycle
In hot circulation it is also more close, but since heat engine operating condition is inconsistent or the inconsistent SCR interior carrier temperature of heat engine mode point
Cloth still has larger difference, also will affect catalyst unit catalytic efficiency, leads to cold and hot WHTC emission result inaccuracy；Second is that pressing
It is tested according to laws and regulations requirement, but regulation is tested to have and compares strict requirements to cold and hot WHTC, this requirement, which limits, daily can only
Do primary, more wasteful time and resource.
Therefore it is analyzed in terms of diesel machine SCR catalyst unit characteristic, it would be desirable to a kind of test method is found, it can be accurate
The hot entry condition of the practical cold and hot WHTC circulation of simulation, makes the SCR catalyst unit temperature and reality when simple hot WHTC circulation
Hot circulation is consistent in the cold and hot WHTC circulation in border, can give full play to catalyst unit efficiency in this way, and diesel emission is also more accurate
Property and consistency.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide the examinations of hot WHTC circulation in a kind of cold and hot WHTC circulation of simulation diesel machine
Proved recipe method can make the SCR catalyst unit temperature of hot WHTC circulation and carry out hot WHTC circulation in cold and hot WHTC test
Temperature it is consistent, can give full play to the efficiency of SCR catalyst unit, reduce urea injection, energy conservation and environmental protection, nominal data more added with
Effect is reliable.
To achieve the above object, the present invention provides hot WHTC in a kind of cold and hot WHTC circulation of simulation diesel machine to follow
The test method of ring, comprising the following steps:
Experiment condition rate-determining steps: according to the rules control diesel engine the lower intake air temperature of declared working condition, intake vacuum,
In it is cold after temperature and exhaust back pressure meet experimental condition；
SCR catalyst unit pre-treatment step: the WHTC cyclic program set according to rack selects in WHTC cyclic program
The state of cyclic operation of 600 ± 10s is tested afterwards, or test before in rack stored program controlled work out WHTC cyclic program in after
Then the state of cyclic operation program of 600 ± 10s runs the program operating conditions diesel engine and is tested, with to SCR catalyst unit into
Row pretreatment；
Diesel engine hot exposure WHTC cyclic test pre-treatment step: after completing the pre- processing of SCR catalyst unit, immediately
10 ± 1min of diesel engine hot dipping is carried out, using the pretreatment as diesel engine hot exposure WHTC cyclic test；And
Formal hot WHTC cyclic test step: after hot dipping expires foot, start rack WHTC cyclic program at once and carry out
Formal hot WHTC cyclic test.
In a preferred embodiment, before the experiment condition rate-determining steps, heat engine step, the heat are first carried out
Machine step are as follows: according to the working condition requirement that diesel engine manufacturing enterprise provides, or determined according to mature engineering experience and carry out operating condition
Heat engine should ensure that the temperature averages of Diesel Engine Coolants and lubricating oil within ± 2 DEG C at least at the end of diesel engine heat engine
Kept for 2 minutes or more.
Another object of the present invention is to provide hot WHTC circulations in a kind of cold and hot WHTC circulation of simulation diesel machine
Experimental rig, the experimental rig be used for above-mentioned test method, it is ensured that experimental data it is accurate and reliable.
To achieve the above object, the present invention provides hot WHTC circulations in a kind of cold and hot WHTC circulation of simulation diesel engine
Experimental rig comprising test-bed stored program controlled, electric dynamometer, air inlet air conditioning, booster and intercooler.Electric power measurement of power
Machine is connected by data with test-bed stored program controlled, is connected by transmission shaft with diesel engine to be measured；Air inlet air conditioning with into
One end of air flue is connected to；Booster is connected to the other end of air intake duct, booster simultaneously also with the exhaust pipe phase of diesel engine to be measured
Connection；One end of intercooler pass through in cold preceding air inlet pipe be connected with booster；The other end pass through in it is cold after air inlet pipe with it is to be measured
The air inlet pipe of diesel engine is connected.
In a preferred embodiment, the experimental rig that hot WHTC is recycled in the cold and hot WHTC circulation of simulation diesel engine is also
It is connected by whirlpool heel row tracheae with booster including catalyst converter silencer；And exhaust backpressure valve passes through catalyst converter heel row tracheae
It is connected with gas analyzer.
In a preferred embodiment, the experimental rig that hot WHTC is recycled in the cold and hot WHTC circulation of simulation diesel engine is also
Including air-intake negative-pressure regulating valve, it is arranged on air intake duct, and between air inlet air conditioning and booster.
In a preferred embodiment, adjust air inlet air conditioning intake air temperature, air-intake negative-pressure adjustment valve open degree, in
Water valve open degree, the open degree of exhaust backpressure valve of cooler, can control intake air temperature of the diesel engine to be measured under declared working condition,
Intake vacuum, in it is cold after temperature or exhaust back pressure meet the experimental condition of prescribed requirement.
Compared with prior art, the test that hot WHTC is recycled in the cold and hot WHTC circulation of simulation diesel machine of the invention
Method and device has the advantages that the SCR catalyst unit temperature that can make hot WHTC circulation and carries out cold and hot WHTC
The temperature of hot WHTC circulation is consistent in test, can give full play to the efficiency of SCR catalyst unit, reduces urea injection, energy conservation
Environmental protection, nominal data are more efficient reliable.
Detailed description of the invention
Fig. 1 is the flow chart of test method according to an embodiment of the present invention.
Fig. 2 is the schematic diagram of experimental rig according to an embodiment of the present invention.
Main appended drawing reference explanation:
1- test-bed stored program controlled (such as PUMA system)；2- electric dynamometer；3- air inlet air conditioning；4- air-intake negative-pressure is adjusted
Valve；5- air intake duct；6- air inlet pipe；7- diesel engine to be measured；8- exhaust pipe；9- booster；The whirlpool 10- heel row tracheae；11- catalyst converter disappears
Sound device；Cold rear air inlet pipe in 12-；13- intercooler；Cold preceding air inlet pipe in 14-；15- catalyst converter heel row tracheae；16- exhaust back pressure
Valve；17- gas analyzer.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1, Fig. 1 is the flow chart of test method according to an embodiment of the present invention.According to the present invention preferably
The test method of hot WHTC circulation in a kind of cold and hot WHTC circulation of simulation diesel machine of embodiment, including heat engine step
Suddenly, experiment condition rate-determining steps, SCR catalyst unit pre-treatment step, diesel engine hot exposure WHTC cyclic test pre-treatment step
And formal hot WHTC cyclic test step.Heat engine step be the working condition requirement provided according to diesel engine manufacturing enterprise, or
Person determines according to mature engineering experience carries out operating condition heat engine, at the end of diesel engine heat engine, should ensure that Diesel Engine Coolants and
The temperature averages of lubricating oil are at least kept 2 minutes or more within ± 2 DEG C；Experiment condition rate-determining steps are to control according to the rules
Diesel engine the lower intake air temperature of declared working condition, intake vacuum, in it is cold after temperature and exhaust back pressure meet experimental condition；
SCR catalyst unit pre-treatment step is the WHTC cyclic program set according to rack, rear 600 in selection WHTC cyclic program ±
The state of cyclic operation of 10s is tested, to pre-process to SCR catalyst unit；Diesel engine hot exposure WHTC cyclic test is located in advance
Reason step is to carry out 10 ± 1min of diesel engine hot dipping immediately after completing the pretreatment of SCR catalyst unit, to rise as diesel engine heat
The pretreatment of dynamic WHTC cyclic test；Formal hot WHTC cyclic test step is to start rack at once after hot dipping expires foot
WHTC cyclic program carries out formal hot WHTC cyclic test.
As shown in Fig. 2, Fig. 2 is the schematic diagram of experimental rig according to an embodiment of the present invention.According to the present invention preferably
The experimental rig of hot WHTC circulation, is used to simulate bavin in a kind of cold and hot WHTC circulation of simulation diesel machine of embodiment
The test of hot WHTC circulation in the cold and hot WHTC circulation of oily diesel engine, the experimental rig include test-bed stored program controlled 1 (such as
PUMA system)), electric dynamometer 2, air inlet air conditioning 3, booster and intercooler.Electric dynamometer 2 passes through data and test
Rack stored program controlled 1 is connected, and electric dynamometer 2 is connected by transmission shaft with diesel engine 7 to be measured；Air inlet air conditioning 3 and air inlet
The one end in road 5 is connected to；Booster 9 is connected to the other end of air intake duct 5, booster 9 while the exhaust pipe also with diesel engine 7 to be measured
8 are connected；One end of intercooler 13 pass through in cold preceding air inlet pipe 14 be connected with booster 9；The other end pass through in it is cold after air inlet
Pipe 12 is connected with the air inlet pipe 6 of diesel engine 7 to be measured.
In some embodiments, the experimental rig of hot WHTC circulation further includes in the cold and hot WHTC circulation of simulation diesel engine
Catalyst converter silencer 11 is connected by whirlpool heel row tracheae 10 with booster 9；And exhaust backpressure valve 16 passes through catalyst converter heel row
Tracheae 15 is connected with gas analyzer 17.
In some embodiments, the experimental rig of hot WHTC circulation further includes in the cold and hot WHTC circulation of simulation diesel engine
Air-intake negative-pressure regulating valve 4 is arranged on air intake duct 5, and between air inlet air conditioning 3 and booster 9.
In some embodiments, adjust the intake air temperature of air inlet air conditioning 3, the open degree of air-intake negative-pressure regulating valve 4, in it is cold
Water valve open degree, the open degree of exhaust backpressure valve 16 of device 13, it will be able to control air inlet of the diesel engine 7 to be measured under declared working condition
Temperature, intake vacuum, in it is cold after temperature or exhaust back pressure meet the experimental condition of prescribed requirement.
In conclusion compared with currently used hot WHTC cyclic test method and device, experimental method of the invention
And device is summarized by actual measurement, the energy accurate simulation hot WHTC that actually cold and hot WHTC is recycled is recycled into condition, makes hot
The temperature that WHTC recycles SCR catalyst unit is consistent with the temperature of WHTC circulation hot in cold and hot WHTC circulation, can give full play to
SCR catalyst unit efficiency reduces urea consumption, and energy conservation and environmental protection can save a large number of experiments time, improves WHTC cycle bleeder mark
Determine efficiency etc..
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (6)
1. the test method of hot WHTC circulation in a kind of cold and hot WHTC circulation of simulation diesel engine, which is characterized in that including following
Step:
Experiment condition rate-determining steps: control diesel engine the lower intake air temperature of declared working condition, intake vacuum, in it is cold after temperature with
And exhaust back pressure meets experimental condition；
SCR catalyst unit pre-treatment step: the WHTC cyclic program set according to rack, after selecting in WHTC cyclic program
The state of cyclic operation of 600 ± 10s is tested, or is worked out rear 600 in WHTC cyclic program in rack stored program controlled before test
Then the state of cyclic operation program of ± 10s runs the program operating conditions diesel engine and is tested, to carry out to SCR catalyst unit
Pretreatment；
Diesel engine hot exposure WHTC cyclic test pre-treatment step: it after completing the pre- processing of SCR catalyst unit, carries out immediately
Diesel engine 10 ± 1min of hot dipping, using the pretreatment as diesel engine hot exposure WHTC cyclic test；
Formal hot WHTC cyclic test step: after hot dipping expires foot, start rack WHTC cyclic program at once and carry out formally
Hot WHTC cyclic test.
2. the test method that hot WHTC is recycled in the cold and hot WHTC circulation of simulation diesel engine as described in claim 1, feature
It is, before the experiment condition rate-determining steps, first carries out heat engine step, the heat engine step are as follows: produce according to diesel engine
The working condition requirement that enterprise provides, or determined according to mature engineering experience and carry out operating condition heat engine, at the end of diesel engine heat engine,
So that the temperature averages of Diesel Engine Coolants and lubricating oil are at least kept 2 minutes or more within ± 2 DEG C.
3. the experimental rig of hot WHTC circulation, is used for claims 1 or 2 in a kind of cold and hot WHTC circulation of simulation diesel engine
Test method, which is characterized in that the experimental provision includes:
Test-bed stored program controlled；
Electric dynamometer is connected with the test-bed stored program controlled by data, passes through transmission shaft and the bavin to be measured
Oil machine is connected；
Air inlet air conditioning is connected to one end of air intake duct；
Booster is connected to the other end of the air intake duct, the booster exhaust also with the diesel engine to be measured simultaneously
Pipe is connected；And
Intercooler, one end pass through in cold preceding air inlet pipe be connected with the booster；The other end pass through in it is cold after air inlet pipe with
The air inlet pipe of the diesel engine to be measured is connected.
4. the experimental rig that hot WHTC is recycled in the cold and hot WHTC circulation of simulation diesel engine as claimed in claim 3, feature
It is, further includes:
Catalyst converter silencer is connected by whirlpool heel row tracheae with the booster；And
Exhaust backpressure valve is connected by catalyst converter heel row tracheae with gas analyzer.
5. the experimental rig that hot WHTC is recycled in the cold and hot WHTC circulation of simulation diesel engine as claimed in claim 4, feature
It is, further includes air-intake negative-pressure regulating valve, be arranged on the air intake duct, and is located at the air inlet air conditioning and the booster
Between.
6. the experimental rig that hot WHTC is recycled in the cold and hot WHTC circulation of simulation diesel engine as claimed in claim 4, feature
It is, adjusts the intake air temperature of the air inlet air conditioning, the air-intake negative-pressure adjusts the open degree of valve, the water valve of the intercooler is opened
The open degree of Qi Du, the exhaust backpressure valve can control intake air temperature of the diesel engine to be measured under declared working condition, air inlet
Vacuum degree, in it is cold after temperature or exhaust back pressure meet the experimental condition of prescribed requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910001388.XA CN109443775B (en) | 2019-01-02 | 2019-01-02 | Test method and device for simulating hot WHTC (WHTC) cycle in cold-hot WHTC cycle of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910001388.XA CN109443775B (en) | 2019-01-02 | 2019-01-02 | Test method and device for simulating hot WHTC (WHTC) cycle in cold-hot WHTC cycle of diesel engine |
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| Publication Number | Publication Date |
|---|---|
| CN109443775A true CN109443775A (en) | 2019-03-08 |
| CN109443775B CN109443775B (en) | 2024-03-01 |
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|---|---|---|---|
| CN201910001388.XA Active CN109443775B (en) | 2019-01-02 | 2019-01-02 | Test method and device for simulating hot WHTC (WHTC) cycle in cold-hot WHTC cycle of diesel engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116448436A (en) * | 2023-06-13 | 2023-07-18 | 中汽研汽车检验中心(昆明)有限公司 | Plateau WHTC test condition generation method, system, server side and medium |
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| EP1607595A1 (en) * | 2004-06-15 | 2005-12-21 | Delphi Technologies, Inc. | An exhaust system for a turbocharged diesel engine |
| CN107178418A (en) * | 2017-06-06 | 2017-09-19 | 天津大学 | Preprocessor heat management control method based on air inlet system and exhaust system |
| CN209117351U (en) * | 2019-01-02 | 2019-07-16 | 广西玉柴机器股份有限公司 | Simulate the experimental rig of hot WHTC circulation in the cold and hot WHTC circulation of diesel engine |
-
2019
- 2019-01-02 CN CN201910001388.XA patent/CN109443775B/en active Active
Patent Citations (3)
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|---|---|---|---|---|
| EP1607595A1 (en) * | 2004-06-15 | 2005-12-21 | Delphi Technologies, Inc. | An exhaust system for a turbocharged diesel engine |
| CN107178418A (en) * | 2017-06-06 | 2017-09-19 | 天津大学 | Preprocessor heat management control method based on air inlet system and exhaust system |
| CN209117351U (en) * | 2019-01-02 | 2019-07-16 | 广西玉柴机器股份有限公司 | Simulate the experimental rig of hot WHTC circulation in the cold and hot WHTC circulation of diesel engine |
Non-Patent Citations (3)
| Title |
|---|
| 张立雄等: "基于SCR柴油机的WHTC冷、热启动循环排放差异研究", 小型内燃机与车辆技术, no. 03 * |
| 李紫帝等: "进气中冷温度对柴油机NO_x排放性能的影响", 车辆与动力技术, no. 04 * |
| 王云飞: "基于WHTC循环的车用柴油机瞬态性能与排放控制研究", 中国优秀硕士学位论文全文数据库工程科技Ⅱ辑, no. 07, pages 1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116448436A (en) * | 2023-06-13 | 2023-07-18 | 中汽研汽车检验中心(昆明)有限公司 | Plateau WHTC test condition generation method, system, server side and medium |
| CN116448436B (en) * | 2023-06-13 | 2023-09-01 | 中汽研汽车检验中心(昆明)有限公司 | Plateau WHTC test condition generation method, system, server side and medium |
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| CN109443775B (en) | 2024-03-01 |
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