CN110410187A - Vehicle emitted smoke system and method - Google Patents
Vehicle emitted smoke system and method Download PDFInfo
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- CN110410187A CN110410187A CN201810408864.5A CN201810408864A CN110410187A CN 110410187 A CN110410187 A CN 110410187A CN 201810408864 A CN201810408864 A CN 201810408864A CN 110410187 A CN110410187 A CN 110410187A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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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 provides a kind of vehicle emitted smoke system and method, the vehicle emitted smoke system includes instantaneous discharge computing module, the first input module, the second input module, the first enquiry module, discharge correction module and accumulation discharge computing module, and the instantaneous discharge computing module is for calculating the instantaneous emissions data of test cycle；First input module is for inputting empirical emissions data library；Second input module is for inputting the first vehicle parameter；First enquiry module in the empirical emissions data library for inquiring discharge correction factor according to the first vehicle parameter；The discharge correction module is used to correct the instantaneous emissions data of the test cycle in real time according to discharge correction factor, to obtain amendment emissions data；The accumulation discharge computing module is used to calculate the accumulation emissions data of the test cycle in real time according to amendment emissions data, and exports the accumulation emissions data, and then the accuracy of emitted smoke can be improved.
Description
Technical field
The invention belongs to technical field of vehicle, in particular to a kind of vehicle emitted smoke system and method.
Background technique
Vehicle discharge is influenced by many factors, such as vehicle condition, environmental condition, Real-road Driving Cycle, wherein vehicle
Situation includes engine, vehicle age, mileage travelled, maintenance status, fuel qualities etc., and environmental condition includes atmospheric temperature, humidity, wind
Speed etc., therefore the difficulty of vehicle emitted smoke is larger.
There are mainly two types of current vehicle emitted smoke methods, the emitted smoke side based on vehicle engine bench test emissions data
Method and be based on physical theory the phenomenon that learn operating condition prediction technique.Emitted smoke method benefit based on vehicle engine bench test emissions data
The stable state emissions data obtained with engine pedestal, according to spies such as revolving speed, torque, fuel consumption rates under different solar terms door aperture
Property parameter and discharge between establish mathematical relationship, to realize vehicle emitted smoke.Study of phenomenon operating condition prediction technique is with cylinder internal pressure
The information such as power, temperature, fuel injection rate solve the chemical reaction differential equation as condition, and calculating is more complicated, and just for certain
The emitted smoke of one operating condition.
Since vehicle engine bench test emissions data is that vehicle is in the emissions data measured under stable state, the prediction of study of phenomenon operating condition
Method is based on the emissions data under single operating condition, does not comprehensively consider the factors such as cold start, catalyst converter, air-fuel ratio to row
The influence put.Therefore, the vehicle of current vehicle emitted smoke method prediction is discharged there are biggish error, and accuracy is lower.
Therefore, it is badly in need of improving existing vehicle emitted smoke system, to improve the standard of vehicle emitted smoke system
True property.
Summary of the invention
The purpose of the present invention is to provide a kind of vehicle emitted smoke system and method, to improve vehicle emitted smoke system
With the accuracy of method.
In order to solve the above technical problems, the present invention provides a kind of vehicle emitted smoke system, vehicle emitted smoke system
System include instantaneous discharge computing module, the first input module, the second input module, the first enquiry module, discharge correction module and
Accumulation discharge computing module, the instantaneous discharge computing module is for calculating the instantaneous emissions data of test cycle；Described first is defeated
Enter module for inputting empirical emissions data library；Second input module is for inputting the first vehicle parameter；Described first looks into
Module is ask for inquiring discharge correction factor in the empirical emissions data library according to the first vehicle parameter；The discharge amendment
Module is used to correct the instantaneous emissions data of the test cycle in real time according to discharge correction factor, to obtain amendment discharge
Data；Number is discharged in the accumulation that the accumulation discharge computing module is used to calculate the test cycle in real time according to amendment emissions data
According to, and export the accumulation emissions data.
Optionally, the empirical emissions data library includes catalyst converter amendment database, cold start-up amendment database and air-fuel
Than correcting database, the catalyst converter amendment database includes the number that corresponding catalyst converter correction factor is configured with catalyst converter
According to the cold start-up amendment database includes the data of cold start-up correction factor corresponding with cold start-up, and the air-fuel ratio is repaired
Correction data library includes the data of air-fuel ratio correction coefficient corresponding with air-fuel ratio；First input module includes that catalyst converter is repaired
Positive coefficient input module, cold start-up correction factor input module, air-fuel ratio correction coefficient input module, catalyst converter amendment system
For number input module for inputting catalyst converter amendment database, the cold start-up correction factor database input module is cold for inputting
Starting amendment database, the air-fuel ratio correction coefficient input module is for inputting air-fuel ratio correction database.
Optionally, first vehicle parameter includes catalyst converter configuration, cold start-up operating condition, air-fuel ratio；First inquiry
Module includes catalyst converter correction factor enquiry module, is cold-started correction factor enquiry module, air-fuel ratio correction coefficient enquiry module,
The catalyst converter correction factor enquiry module is used to be inquired in catalyst converter amendment database according to catalyst converter configuration and be catalyzed
Device correction factor, the cold start-up correction factor enquiry module are used to be looked into from cold start-up amendment database according to cold start-up operating condition
Cold start-up correction factor is ask, the air-fuel ratio correction coefficient enquiry module is used for according to air-fuel ratio from air-fuel ratio correction database
Inquire air-fuel ratio correction coefficient.
Optionally, the discharge correction module includes catalyst converter correction module, cold start-up correction module, air-fuel ratio correction mould
Block, the catalyst converter correction module are used to carry out the instantaneous emissions data of the test cycle according to the catalyst converter correction factor
Amendment, the cold start-up correction module for according to the cold start-up correction factor to the instantaneous emissions data of the test cycle into
Row amendment, the air-fuel ratio correction module are used to carry out the instantaneous emissions data of the test cycle according to air-fuel ratio correction coefficient
Amendment.
Optionally, the instantaneous discharge computing module includes: third input module, for inputting the test cycle of vehicle
Speed and time；4th input module, for inputting the second vehicle parameter；Torque rotary speed computing module, for according to the examination
The speed and time and second vehicle parameter of testing circulation calculate revolving speed and the torque of engine in real time；Emissions data library mould
Block, for arranging and storing vehicle engine bench test emissions data；And enquiry module, for according to the revolving speed, torque and the
Two vehicle parameters real-time query from the vehicle engine bench test emissions data obtains the emissions data of engine.
Optionally, second vehicle parameter includes base ratio, gearbox ratio, transfer efficiency and tire radius, described
Torque rotary speed computing module is used for according to the speed of the test cycle and time and the base ratio, gearbox ratio, turns
The running resistance that efficiency and tire radius calculate the vehicle in real time is changed, and for according to the following formula
The torque of the engine is calculated in real time, and wherein Ft is the driving force that engine provides, igFor base ratio, i0For
Gearbox ratio, ηTFor transfer efficiency, r is tire radius, TtqFor motor torque；The running resistance includes the air resistance of vehicle
Power, the rolling resistance of vehicle, the gradient resistance of the acceleration resistance of vehicle and vehicle；The torque rotary speed computing module includes the
One computing module, the second computing module, third computing module and the 4th computing module, second vehicle parameter further include rolling
Resistance equivalent value and coefficient of air resistance equivalent value, first computing module F according to the following formulaW=a+b μ2Vehicle is calculated in real time
Air drag and rolling resistance, wherein FWFor the sum of the air drag of vehicle and rolling resistance, a is rolling resistance equivalent
Value, b are coefficient of air resistance equivalent value, and μ is the real-time speed of test cycle, alternatively, second vehicle parameter further includes leading to
Cross the driving parameters that vehicle sliding test obtains, first computing module F according to the following formulaW=A+B μ+C μ2It calculates in real time
The air drag and rolling resistance of vehicle, wherein FWFor the sum of the air drag of vehicle and rolling resistance, A, B, C is slided for vehicle
The driving parameters that row test obtains, μ are the real-time speed of test cycle, and second computing module is used to be followed according to the test
The speed of ring and second vehicle parameter calculate the acceleration resistance of vehicle in real time, and the third computing module is used for according to institute
State that the second vehicle parameter calculates the gradient resistance of vehicle in real time and the 4th computing module is used for according to the sky of the vehicle
The conjunction of atmidometer, rolling resistance, acceleration resistance and gradient resistance calculates the running resistance of the vehicle in real time, and is used for according to such as
Lower formula
The torque of the engine is calculated in real time, and wherein Ft is the driving force that engine provides, igFor base ratio, i0For
Gearbox ratio, ηTFor transfer efficiency, r is tire radius, TtqFor motor torque.
Optionally, the emissions data library module includes the 5th input module and data conversion module, the 5th input
Module is used to the vehicle engine bench test discharging number for inputting vehicle engine bench test emissions data, the data conversion module
According to being converted to vehicle instantaneous emission data and storing, the type of the vehicle engine bench test emissions data is volume fraction data class
Type, the type of the vehicle instantaneous emission data are qualitative data type, and the vehicle instantaneous emission data include multiple groups and turn
Speed, torque and the one-to-one engine emission data of the second vehicle parameter.
The present invention also provides a kind of vehicle emitted smoke methods, comprising: calculates the instantaneous emissions data of test cycle；Input warp
Test emissions data library；Input the first vehicle parameter；Discharge is inquired in the empirical emissions data library according to the first vehicle parameter
Correction factor；The instantaneous emissions data of the test cycle is modified according to discharge correction factor, to obtain the row of amendment in real time
Put data；And the accumulation emissions data for calculating the test cycle in real time according to amendment emissions data, and described in output
Accumulate emissions data.
Optionally, input empirical emissions data library includes: input catalyst converter amendment database, input cold start-up amendment data
Library inputs air-fuel ratio correction database, wherein the catalyst converter amendment database includes catalysis corresponding with catalyst converter configuration
The data of device correction factor, the cold start-up amendment database include the number of cold start-up correction factor corresponding with cold start-up
According to the air-fuel ratio correction database includes the data of air-fuel ratio correction coefficient corresponding with air-fuel ratio；First vehicle of input
Parameter includes catalyst converter configuration, cold start-up operating condition and air-fuel ratio, according to the first vehicle parameter in the empirical emissions data library
Middle inquiry discharge correction factor includes: that inquiry catalyst converter corrects system in catalyst converter amendment database according to catalyst converter configuration
Number is inquired cold start-up correction factor from cold start-up amendment database according to cold start-up operating condition, is repaired according to air-fuel ratio from air-fuel ratio
Air-fuel ratio correction coefficient is inquired in correction data library.
Optionally, first vehicle parameter includes catalyst converter configuration, cold start-up operating condition, air-fuel ratio；According to the first vehicle
It includes: to be corrected according to catalyst converter configuration in the catalyst converter that parameter inquires discharge correction factor in the empirical emissions data library
Catalyst converter correction factor is inquired in database, and cold start-up amendment system is inquired from cold start-up amendment database according to cold start-up operating condition
Number, inquires air-fuel ratio correction coefficient according to air-fuel ratio from air-fuel ratio correction database.
Optionally, the instantaneous emissions data of the test cycle is modified to be repaired in real time according to discharge correction factor
Positive emissions data includes: to be modified according to the catalyst converter correction factor to the instantaneous emissions data of the test cycle；According to
The cold start-up correction factor is modified the instantaneous emissions data of the test cycle；According to air-fuel ratio correction coefficient to described
The instantaneous emissions data of test cycle is modified.
Optionally, calculating the instantaneous emissions data of test cycle includes: speed and the time for inputting the test cycle of vehicle；It is defeated
Enter the second vehicle parameter；Engine is calculated in real time according to the speed of the test cycle and time and second vehicle parameter
Revolving speed and torque；Arrange and store vehicle engine bench test emissions data；According to the revolving speed, torque and the second vehicle parameter from
Real-time query obtains emissions data and the output of engine in the vehicle engine bench test emissions data.
Optionally, second vehicle parameter includes base ratio, gearbox ratio, transfer efficiency and tire radius, according to
The speed of the test cycle and time and second vehicle parameter calculate the revolving speed of engine in real time and torque includes: root
It is counted in real time according to the speed of the test cycle and time and the base ratio, gearbox ratio, transfer efficiency and tire radius
Calculate the running resistance of the vehicle；
Further according to following formula
The torque of the engine is calculated in real time, and wherein Ft is the driving force that engine provides, igFor base ratio, i0For
Gearbox ratio, ηTFor transfer efficiency, r is tire radius, TtqFor motor torque；According to the speed of the test cycle and time
And the running resistance that second vehicle parameter calculates the vehicle in real time includes: second vehicle parameter including rolling resistance
Power equivalent value, coefficient of air resistance equivalent value are counted in real time according to the speed of the test cycle and second vehicle parameter
When calculating the air drag and rolling resistance of vehicle, F according to the following formulaW=a+b μ2Air drag and the rolling of vehicle are calculated in real time
Resistance, wherein FWFor the sum of the air drag of vehicle and rolling resistance, a is rolling resistance equivalent value, and b is coefficient of air resistance
Equivalent value, μ are the speed of test cycle, alternatively, second vehicle parameter includes the traveling obtained by vehicle sliding test
Parameter calculates the air drag of vehicle in real time and rolls and hinders according to the speed of the test cycle and second vehicle parameter
When power, F according to the following formulaW=A+B μ+C μ2The air drag and rolling resistance of vehicle are calculated in real time, wherein FWFor vehicle
The sum of air drag and rolling resistance, A, B, C are the driving parameters that vehicle sliding test obtains, and μ is the speed of test cycle；Root
Calculate the acceleration resistance of vehicle in real time according to the speed and second vehicle parameter of the test cycle；According to second vehicle
Parameter calculates the gradient resistance of vehicle in real time；It is hindered according to the air drag of the vehicle, rolling resistance, acceleration resistance and ramp
The conjunction of power calculates the running resistance of the vehicle in real time.
Optionally, when arranging and storing vehicle engine bench test emissions data, vehicle engine bench test emissions data is first inputted, then
The vehicle engine bench test emissions data is converted into vehicle instantaneous emission data and is stored, the vehicle engine bench test discharges number
According to type be volume fraction data type, the types of the vehicle instantaneous emission data is qualitative data type, the vehicle
Instantaneous emission data include multiple groups and revolving speed, torque and the one-to-one engine emission data of the second vehicle parameter.
A kind of vehicle emitted smoke system and method provided by the invention, have the advantages that
Discharge correction factor is inquired in empirical emissions data library according to the first vehicle parameter, and passes through discharge correction factor
The instantaneous emissions data of the test cycle of calculating is modified, the accuracy of vehicle emitted smoke system can be improved.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram of the vehicle emitted smoke system in the embodiment of the present invention one；
Fig. 2 is a kind of flow chart of the vehicle emitted smoke system in the embodiment of the present invention one；
Fig. 3 is the structural block diagram of the vehicle emitted smoke system in the embodiment of the present invention two；
Fig. 4 is the vehicle simplified model in the embodiment of the present invention two；
Fig. 5 is a kind of flow chart of the vehicle emitted smoke method in the embodiment of the present invention two；
Fig. 6 is the flow chart that the running resistance of the vehicle is calculated in the embodiment of the present invention two.
Description of symbols:
100- instantaneously discharges computing module；110- third input module；The 4th input module of 120-；130- torque rotary speed meter
Calculate module；The first computing module of 131-；The second computing module of 132-；133- third computing module；The 4th computing module of 134-；
140- emissions data library module；The 5th input module of 141-；142- data conversion module；150- enquiry module；
The first input module of 200-；The second input module of 300-；The first enquiry module of 400-；500- discharges correction module；
600- accumulation discharge computing module；
710- engine；720- transmission system；730- vehicle body；740- tire；TrRoad.
Specific embodiment
Vehicle emitted smoke system and method proposed by the present invention are made below in conjunction with the drawings and specific embodiments further
It is described in detail.It should be noted that attached drawing is all made of very simplified form and using non-accurate ratio, only to it is convenient,
Lucidly aid in illustrating the purpose of the embodiment of the present invention.
Embodiment one
The present embodiment provides a kind of vehicle emitted smoke systems, are the vehicles in the embodiment of the present invention one with reference to Fig. 1, Fig. 1
A kind of structural block diagram of emitted smoke system, the vehicle emitted smoke system include that instantaneous discharge computing module 100, first is defeated
Enter module 200, the second input module 300, the first enquiry module 400, discharge correction module 500 and accumulation discharge computing module
600.The instantaneous discharge computing module 100 is for calculating the instantaneous emissions data of test cycle；First input module 200 is used
In input empirical emissions data library；Second input module 300 is for inputting the first vehicle parameter；First enquiry module
400 in the empirical emissions data library for inquiring discharge correction factor according to the first vehicle parameter；Mould is corrected in the discharge
Block 500 is used to be modified the instantaneous emissions data of the test cycle according to discharge correction factor, to obtain the row of amendment in real time
Put data；The accumulation discharge computing module 600 is used to calculate the accumulation of the test cycle in real time according to amendment emissions data
Emissions data, and export the accumulation emissions data.
In the present embodiment, discharge correction factor is inquired in empirical emissions data library according to the first vehicle parameter, and pass through
Discharge correction factor is modified the instantaneous emissions data of the test cycle of calculating, and the accurate of vehicle emitted smoke system can be improved
Property.
Specifically, the empirical emissions data library includes catalyst converter amendment database, cold start-up amendment database and air-fuel
Than correcting database.The catalyst converter amendment database includes the number that corresponding catalyst converter correction factor is configured with catalyst converter
According to.The cold start-up amendment database includes the data of cold start-up correction factor corresponding with cold start-up.The air-fuel ratio is repaired
Correction data library includes the data of air-fuel ratio correction coefficient corresponding with air-fuel ratio.First input module 200 includes catalysis
Device correction factor input module, cold start-up correction factor input module, air-fuel ratio correction coefficient input module.The catalyst converter is repaired
Positive coefficient input module is for inputting catalyst converter amendment database.The cold start-up correction factor database input module is for defeated
Enter cold start-up amendment database.The air-fuel ratio correction coefficient input module is for inputting air-fuel ratio correction database.
Specifically, first vehicle parameter includes catalyst converter configuration, cold start-up operating condition and air-fuel ratio.
Specifically, first enquiry module 400 is looked into including catalyst converter correction factor enquiry module, cold start-up correction factor
Ask module and air-fuel ratio correction coefficient enquiry module.The catalyst converter correction factor enquiry module is used to be existed according to catalyst converter configuration
Catalyst converter correction factor is inquired in the catalyst converter amendment database, the cold start-up correction factor enquiry module is used for according to cold
Start operating performance inquiry cold start-up correction factor, air-fuel ratio correction coefficient enquiry module from cold start-up amendment database are used for
Air-fuel ratio correction coefficient is inquired from air-fuel ratio correction database according to air-fuel ratio.
Specifically, the discharge correction module 500 is repaired including catalyst converter correction module, cold start-up correction module, air-fuel ratio
Positive module.The catalyst converter correction module is used for according to the catalyst converter correction factor to the instantaneous emissions data of the test cycle
It is modified, the cold start-up correction module is used to instantaneously discharge number to the test cycle according to the cold start-up correction factor
According to being modified, the air-fuel ratio correction module is used for according to air-fuel ratio correction coefficient to the instantaneous emissions data of the test cycle
It is modified.
In the present embodiment, due to that can be inquired corresponding with the configuration of corresponding catalyst converter under the configuration of different catalyst converters
Catalyst converter discharges correction factor, and discharges correction factor according to the catalyst converter and repair to the instantaneous emissions data of test cycle
Just；Can also be in different operating conditions, such as under the operating condition of cold start-up, inquire cold start emission corresponding with corresponding cold start-up operating condition
Correction factor, and the instantaneous emissions data of test cycle is modified according to the cold start emission correction factor；It can also basis
Different air-fuel ratios inquires air-fuel ratio corresponding with corresponding air-fuel ratio and discharges correction factor, and discharged according to the air-fuel ratio
Correction factor is modified the instantaneous emissions data of test cycle；And then the vehicle emitted smoke system in the present embodiment can be improved
The accuracy of the vehicle emissions data of prediction.
Wherein, the discharge correction module 500 according to discharge correction factor to the instantaneous emissions data of the test cycle into
Row amendment, modified mode can be according to obtained catalyst converter discharge correction factor, cold start emission correction factor and air-fuel
The instantaneous emissions data of test cycle is handled by the way of deviation or ratio than discharge correction factor.
The present embodiment also provides a kind of vehicle emitted smoke method, is the vehicle in the embodiment of the present invention one with reference to Fig. 2, Fig. 2
A kind of flow chart of emitted smoke system, the vehicle emitted smoke method include the following steps:
Step S110, the instantaneous emissions data of test cycle is calculated；
Step S120, empirical emissions data library is inputted；
Step S130, the first vehicle parameter is inputted；
Step S140, discharge correction factor is inquired in the empirical emissions data library according to the first vehicle parameter；
Step S150, the instantaneous emissions data of the test cycle is modified according to discharge correction factor, to obtain reality
Shi Xiuzheng emissions data；
Step S160, for calculating the accumulation emissions data of the test cycle in real time according to amendment emissions data, and it is defeated
The accumulation emissions data out.
Wherein, empirical emissions data library is inputted in step S120 includes:
Step S121, input catalyst converter corrects database；
Step S122, input cold start-up amendment database；
Step S123, air-fuel ratio correction database is inputted.
The catalyst converter amendment database includes the data that corresponding catalyst converter correction factor is configured with catalyst converter, described
Cold start-up amendment database includes the data of cold start-up correction factor corresponding with cold start-up, the air-fuel ratio correction database
Data including air-fuel ratio correction coefficient corresponding with air-fuel ratio.
Wherein, the first vehicle parameter inputted in step S130 includes catalyst converter configuration, cold start-up operating condition and air-fuel ratio.
Wherein, the step S140 inquires discharge amendment system according to the first vehicle parameter in the empirical emissions data library
Number includes:
Step S141, it is configured according to catalyst converter and inquires catalyst converter correction factor in catalyst converter amendment database；
Step S142, according to cold start-up operating condition, inquiry is cold-started correction factor from cold start-up amendment database；
Step S143, air-fuel ratio correction coefficient is inquired from air-fuel ratio correction database according to air-fuel ratio.
Wherein, the step S150 according to discharge correction factor to the instantaneous emissions data of the test cycle be modified with
Obtain correcting emissions data in real time include:
Step S151, it is configured according to catalyst converter and inquires catalyst converter correction factor in catalyst converter amendment database；
Step S152, according to cold start-up operating condition, inquiry is cold-started correction factor from cold start-up amendment database；
Step S153, air-fuel ratio correction coefficient is inquired from air-fuel ratio correction database according to air-fuel ratio.
In the present embodiment, due to that can be inquired corresponding with the configuration of corresponding catalyst converter under the configuration of different catalyst converters
Catalyst converter correction factor, and the instantaneous emissions data of test cycle is modified according to the catalyst converter correction factor；It can also be
Different operating conditions, such as under the operating condition of cold start-up, inquire cold start-up correction factor corresponding with corresponding cold start-up operating condition, and root
The instantaneous emissions data of test cycle is modified according to the cold start-up correction factor；It can also be inquired according to different air-fuel ratios
Air-fuel ratio correction coefficient corresponding with corresponding air-fuel ratio, and test cycle is instantaneously arranged according to the air-fuel ratio correction coefficient
It puts data to be modified, cold start-up, air-fuel ratio and different catalyst converters can be comprehensively considered and configured to vehicle emitted smoke system
It influences, and then the accuracy of the vehicle emissions data of the prediction of the vehicle emitted smoke system and method in the present embodiment can be improved.
Embodiment two
The present embodiment provides a kind of vehicle emitted smoke systems and vehicle emitted smoke method.Compared in embodiment one
Vehicle emitted smoke system and vehicle emitted smoke method, vehicle emitted smoke system and vehicle emitted smoke in the present embodiment
A kind of method that method proposes novel calculating instantaneous emissions data of test cycle discharges computing module 100 with instantaneous.
It is a kind of structural block diagram of the vehicle emitted smoke system in the embodiment of the present invention two, the wink with reference to Fig. 3, Fig. 3
When discharge computing module 100 include third input module 110, the 4th input module 120, torque rotary speed computing module 130, discharge
Database module 140, the second enquiry module 150.The third input module 110 is used to input the speed of the test cycle of vehicle
And the time.4th input module 120 is for inputting the second vehicle parameter.The torque rotary speed computing module 130 is used for root
Calculate revolving speed and the torque of engine in real time according to the speed of the test cycle and time and second vehicle parameter.It is described
Emissions data library module 140 is for arranging and storing vehicle engine bench test emissions data.Second enquiry module 150 is used for root
According to the revolving speed, torque and the second vehicle parameter, real-time query obtains engine from the vehicle engine bench test emissions data
Emissions data.
In the present embodiment, second vehicle parameter includes base ratio, gearbox ratio, transfer efficiency and tire radius.
The torque rotary speed computing module 130 is used for real according to the speed of the test cycle and time and second vehicle parameter
When calculate the running resistance of the vehicle, and for according to the following formula
The torque of the engine is calculated in real time.Wherein Ft is the driving force that engine provides, igFor base ratio, i0For
Gearbox ratio, ηTFor transfer efficiency, r is tire radius, TtqFor motor torque.The base ratio, gearbox ratio, conversion effect
Rate and tire radius can be inputted from the 4th input module 120.
Second vehicle parameter can also include other parameters relevant to vehicle, such as complete vehicle quality, tire ginseng
Number, transmission ratio, base ratio, gearbox inertia, engine inertia, vehicle inertia, transmission efficiency and road parameters etc..
With reference to the vehicle simplified model that Fig. 4, Fig. 4 are in an embodiment of the present invention, the vehicle include engine 710,
Transmission system 720, vehicle body 730 and tire 740.Vehicle tire 740 during travelling on road Tr will receive
Rolling resistance, gradient resistance, air drag and acceleration resistance.According to vehicle theory, the per a flash of vehicle in the process of moving
Between, driving force provided by engine 710 is equal to vehicle the sum of various running resistances in the process of moving.I.e. just like downward driving side
Journey:
Ft=Fj+Fa+Fi+Ff (1-2)
In formula: Ft is the driving force that engine 710 provides, FfFor rolling resistance, FaFor air drag, FjFor acceleration resistance,
FiFor gradient resistance.
In the present embodiment, the torque rotary speed computing module 130 includes turning the first computing module 131, the second computing module
132, third computing module 133 and the 4th computing module 134.
Described turn of the first computing module 131 is used for real according to the speed of the test cycle and second vehicle parameter
When calculate vehicle air drag and rolling resistance.
Second computing module 132 is used for real-time according to the speed of the test cycle and second vehicle parameter
Calculate the acceleration resistance of vehicle.Specifically, can be calculated according to the speed and complete vehicle quality of the test cycle, vehicle inertia etc.
The acceleration resistance of vehicle.
The third computing module 133 is used to calculate the gradient resistance of vehicle in real time according to second vehicle parameter.Tool
Body, the acceleration resistance of vehicle can be calculated according to the test cycle complete vehicle quality, vehicle inertia and road parameters etc..
4th computing module 134 is used for according to the air drag of the vehicle, rolling resistance, acceleration resistance and ramp
The conjunction of resistance calculates the running resistance of the vehicle in real time.4th computing module 134 is also used to according to the following formula
The torque of the engine 710 is calculated in real time.Wherein Ft is the driving force that engine 710 provides, igBased on slow down
Than i0For gearbox ratio, ηTFor transfer efficiency, r is tire radius, TtqFor the torque of engine 710.
In the present embodiment, second vehicle parameter further includes rolling resistance equivalent value and coefficient of air resistance equivalent value.
Described turn of the first computing module 131 is according to the following formula
FW=a+b μ2 (1-3)
The air drag and rolling resistance of vehicle are calculated in real time.Wherein, FWFor vehicle air drag and rolling resistance it
It is rolling resistance equivalent value with, a, b is coefficient of air resistance equivalent value, and μ is the real-time speed of test cycle.
Specifically, the vehicle generated under 0km/h~km/h speed by brake apparatus and chassis dynamometer intrinsic friction
Rolling resistance and air drag and speed there are following relationship,
Fw=a+b μ2 (1-3)
Wherein, FwFor the sum of the air drag of vehicle and rolling resistance, a is rolling resistance equivalent value, and b is air drag system
Number equivalent value, μ is speed.And rolling resistance equivalent value and coefficient of air resistance equivalent value can obtain in relevant regulation file
It takes.In the present embodiment, the rolling resistance equivalent value and coefficient of air resistance equivalent value can be defeated from the 4th input module 120
Enter.
In another embodiment, the air drag of vehicle and rolling resistance can also calculate in other way
It arrives.Specifically, second vehicle parameter further includes the driving parameters obtained by vehicle sliding test.Described turn first calculating
Module 131 is according to the following formula
FW=A+B μ+C μ2 (1-4)
The air drag and rolling resistance of vehicle are calculated in real time.Wherein, FWFor vehicle air drag and rolling resistance it
With, A, B, C be vehicle sliding test obtain driving parameters, μ be test cycle real-time speed.It can pass through in the present embodiment
Air drag and the rolling of driving parameters and above-mentioned vehicle that the vehicle sliding test inputted from the 4th input module 120 obtains
Formula between dynamic resistance and speed calculates the air drag and rolling resistance of vehicle.The driving parameters that vehicle sliding test obtains
A, B, C may be from the test data of drum test.The air drag of vehicle is calculated by above-mentioned formula (1-4) and rolling resistance relates to
And the second vehicle parameter it is less, accurate reliable and practical.
In the present embodiment, the revolving speed of the engine 710 usually passes through the test of the vehicle of the input of third input module 110
The speed of circulation and the second vehicle parameter of the 4th input module 120 input calculate the real-time revolving speed of engine 710.
The emissions data library module 140 includes the 5th input module 141 and data conversion module 142.Described 5th is defeated
Enter module 141 for inputting vehicle engine bench test emissions data.The data conversion module 142 is used to survey the vehicle rack
Examination emissions data is converted to vehicle instantaneous emission data and stores.The type of the vehicle engine bench test emissions data is volume point
Number data type, the type of the vehicle instantaneous emission data are qualitative data type.The vehicle instantaneous emission data include
The emissions data of multiple groups and revolving speed, torque and the one-to-one engine 710 of the second vehicle parameter.The vehicle instantaneous emission number
The second parameter in can be complete vehicle quality, tire parameter, transmission ratio, base ratio, gearbox inertia, engine inertia,
Vehicle inertia, transmission efficiency etc..
Vehicle engine bench test emissions data is the universal characteristic emissions data of vehicle, these universal characteristic emissions datas include
Volume fraction data, such as pollutant account for the volume ratio data of emission, further include mass fraction data, by institute in the present embodiment
It states volume fraction data and is converted to mass fraction data, so that vehicle engine bench test emissions data be made to be unified for mass fraction number
According to convenient for inquiring the emissions data of engine 710 by the second enquiry module 150.
Specifically, the vehicle engine bench test emissions data includes the volume ratio that pollutant accounts for emission in the present embodiment
Data, vehicle engine bench test emissions data, which is converted to vehicle instantaneous emission data, to be realized by following formula:
Vehicle emitted smoke system can so be effectively improved to the adaptability of various vehicle engine bench test emissions datas, can be changed
The versatility of kind vehicle emitted smoke system.
In the present embodiment, second enquiry module 150 is according to the revolving speed, torque and the second vehicle parameter from the vehicle
In engine bench test emissions data when the emissions data of real-time query engine 710, it can pass through in emissions data library module 140
Mapping relations algorithm queries vehicle engine bench test emissions data corresponding with the revolving speed, torque and the second vehicle parameter, into
And obtain the emissions data of engine 710.
In the present embodiment, the third input module 110 can be defeated by inputting the Velocity Time relation curve of test cycle
Enter speed and the time of the test cycle of vehicle.
In the present embodiment, the second vehicle parameter that can be inputted by the 4th input module 120 includes but is not limited to such as
Lower parameter: base ratio, gearbox ratio, transfer efficiency, tire radius, rolling resistance equivalent value, coefficient of air resistance equivalent value,
Driving parameters, car body weight and the ramp parameter that vehicle sliding test obtains.
The present embodiment also provides a kind of vehicle emitted smoke method.It is in an embodiment of the present invention with reference to Fig. 5, Fig. 5
The flow chart of vehicle emitted smoke method, the vehicle emitted smoke method include:
Step S210 inputs speed and the time of the test cycle of vehicle；
Step S220 inputs the second vehicle parameter；
Step S230 is calculated start in real time according to the speed of the test cycle and time and second vehicle parameter
The revolving speed of machine 710 and torque；
Step S240 arranges and stores vehicle engine bench test emissions data；
Step S250, according to the revolving speed, torque and the second vehicle parameter from the vehicle engine bench test emissions data
Real-time query obtains the emissions data of engine 710；
The step S230 includes:
Step S231, calculated in real time according to the speed of the test cycle and time and second vehicle parameter described in
The running resistance of vehicle；
Step S232, according to the following formula
The torque of the engine 710 is calculated in real time, and wherein Ft is the driving force that engine 710 provides, igBased on slow down
Than i0For gearbox ratio, ηTFor transfer efficiency, r is tire radius, TtqFor 710 torque of engine.
It is the flow chart that the running resistance of the vehicle is calculated in the embodiment of the present invention two with reference to Fig. 6, Fig. 6, in step
In S231, the running resistance for calculating the vehicle in real time includes:
Step S232 calculates the air of vehicle according to the speed of the test cycle and second vehicle parameter in real time
Resistance and rolling resistance；
Step S233 calculates the acceleration of vehicle according to the speed of the test cycle and second vehicle parameter in real time
Resistance；
Step S234 calculates the gradient resistance of vehicle according to second vehicle parameter in real time；
Step S235 is counted in real time according to the conjunction of the air drag of the vehicle, rolling resistance, acceleration resistance and gradient resistance
Calculate the running resistance of the vehicle.
The second vehicle parameter inputted in step S220 includes rolling resistance equivalent value, coefficient of air resistance equivalent value.
In step S232, when calculating the air drag and rolling resistance of vehicle in real time, according to the following formula
FW=a+b μ2
The air drag and rolling resistance of vehicle are calculated in real time, wherein FWFor vehicle air drag and rolling resistance it
It is rolling resistance equivalent value with, a, b is coefficient of air resistance equivalent value, and μ is the speed of test cycle.
In another embodiment, the second vehicle parameter inputted in step S220 includes being obtained by vehicle sliding test
The driving parameters obtained.It, can also be according to the following formula when calculating the air drag and rolling resistance of vehicle in real time in step S232
FW=A+B μ+C μ2
The air drag and rolling resistance of vehicle are calculated in real time, wherein FWFor vehicle air drag and rolling resistance it
With, A, B, C be vehicle sliding test obtain driving parameters, μ be test cycle speed.
The vehicle instantaneous emission data include multiple groups and revolving speed, torque and the one-to-one engine of the second vehicle parameter
710 emissions datas arrange in step S240 and storage vehicle engine bench test emissions data include:
Step S241 inputs vehicle engine bench test emissions data；
The vehicle engine bench test emissions data is converted to vehicle instantaneous emission data and stored by step S242, described
The type of vehicle engine bench test emissions data is volume fraction data type, and the type of the vehicle instantaneous emission data is quality
Data type.
The method of calculating running resistance in vehicle emitted smoke system and method in the present embodiment can simplify needs
Second vehicle parameter of input, can simplify operating process, can accelerate vehicle emitted smoke system operational speed, can improve vehicle row
The response speed of forecasting system is put, and the operability and versatility of vehicle emitted smoke system can be improved.
Emissions data library module 140 in the present embodiment can effectively improve vehicle emitted smoke system to various vehicle racks
The adaptability for testing emissions data, can improve the versatility of vehicle emitted smoke system.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (14)
1. a kind of vehicle emitted smoke system characterized by comprising
Instantaneous discharge computing module, for calculating the instantaneous emissions data of test cycle；
First input module, for inputting empirical emissions data library；
Second input module, for inputting the first vehicle parameter；
First enquiry module, for inquiring discharge correction factor in the empirical emissions data library according to the first vehicle parameter；
Correction module is discharged, for being corrected in real time according to discharge correction factor to the instantaneous emissions data of the test cycle,
To obtain amendment emissions data；And
Accumulation discharge computing module, for calculating the accumulation emissions data of the test cycle in real time according to amendment emissions data,
And export the accumulation emissions data.
2. vehicle emitted smoke system as described in claim 1, which is characterized in that the empirical emissions data library includes catalysis
Device corrects database, cold start-up amendment database and air-fuel ratio correction database, and the catalyst converter amendment database includes and urges
Change the data that device configures corresponding catalyst converter correction factor, the cold start-up amendment database includes corresponding with cold start-up
The data of correction factor are cold-started, the air-fuel ratio correction database includes air-fuel ratio correction coefficient corresponding with air-fuel ratio
Data；First input module includes catalyst converter correction factor input module, cold start-up correction factor input module, air-fuel ratio
Correction factor input module, the catalyst converter correction factor input module are described cold to open for inputting catalyst converter amendment database
Dynamic correction factor database input module is used for inputting cold start-up amendment database, the air-fuel ratio correction coefficient input module
In input air-fuel ratio correction database.
3. vehicle emitted smoke system as claimed in claim 2, which is characterized in that first vehicle parameter includes catalyst converter
Configuration, cold start-up operating condition, air-fuel ratio；First enquiry module includes catalyst converter correction factor enquiry module, cold start-up amendment
Coefficient enquiry module, air-fuel ratio correction coefficient enquiry module, the catalyst converter correction factor enquiry module are used for according to catalyst converter
Configuration inquires catalyst converter correction factor in catalyst converter amendment database, and the cold start-up correction factor enquiry module is used for
According to cold start-up operating condition, inquiry cold start-up correction factor, the air-fuel ratio correction coefficient inquire mould from cold start-up amendment database
Block is used to inquire air-fuel ratio correction coefficient from air-fuel ratio correction database according to air-fuel ratio.
4. vehicle emitted smoke system as claimed in claim 3, which is characterized in that the discharge correction module includes catalyst converter
Correction module, cold start-up correction module, air-fuel ratio correction module, the catalyst converter correction module according to the catalyst converter for repairing
Positive coefficient is modified the instantaneous emissions data of the test cycle, and the cold start-up correction module is used for according to the cold start-up
Correction factor is modified the instantaneous emissions data of the test cycle, and the air-fuel ratio correction module according to air-fuel ratio for repairing
Positive coefficient is modified the instantaneous emissions data of the test cycle.
5. vehicle emitted smoke system as described in claim 1, which is characterized in that the instantaneous discharge computing module includes:
Third input module, for inputting speed and the time of the test cycle of vehicle；
4th input module, for inputting the second vehicle parameter；
Torque rotary speed computing module, for real-time according to the speed of the test cycle and time and second vehicle parameter
Calculate revolving speed and the torque of engine；
Emissions data library module, for arranging and storing vehicle engine bench test emissions data；And
Enquiry module is used for according to the revolving speed, torque and the second vehicle parameter from the vehicle engine bench test emissions data
Real-time query obtains the emissions data of engine.
6. vehicle emitted smoke system as claimed in claim 5, which is characterized in that second vehicle parameter includes main deceleration
Than, gearbox ratio, transfer efficiency and tire radius, the torque rotary speed computing module is used for the speed according to the test cycle
Calculate the running resistance of the vehicle in real time than, transfer efficiency and tire radius with time and the base ratio, gearbox,
And for according to the following formula
The torque of the engine is calculated in real time, and wherein Ft is the driving force that engine provides, igFor base ratio, i0For speed change
Case ratio, ηTFor transfer efficiency, r is tire radius, TtqFor motor torque；
The running resistance includes the slope of the air drag of vehicle, the rolling resistance of vehicle, the acceleration resistance of vehicle and vehicle
Road resistance；
The torque rotary speed computing module includes:
First computing module, second vehicle parameter further include rolling resistance equivalent value and coefficient of air resistance equivalent value, institute
State the first computing module F according to the following formulaW=a+b μ2The air drag and rolling resistance of vehicle are calculated in real time, wherein FWFor
The sum of the air drag of vehicle and rolling resistance, a are rolling resistance equivalent value, and b is coefficient of air resistance equivalent value, and μ is test
The real-time speed of circulation, alternatively, second vehicle parameter further includes the driving parameters obtained by vehicle sliding test, it is described
First computing module F according to the following formulaW=A+B μ+C μ2The air drag and rolling resistance of vehicle are calculated in real time, wherein FWFor
The sum of the air drag of vehicle and rolling resistance, A, B, C are the driving parameters that vehicle sliding test obtains, and μ is test cycle
Real-time speed；
Second computing module, for calculating vehicle in real time according to the speed and second vehicle parameter of the test cycle
Acceleration resistance,
Third computing module, for calculating the gradient resistance of vehicle in real time according to second vehicle parameter, and
4th computing module, for real according to the conjunction of the air drag of the vehicle, rolling resistance, acceleration resistance and gradient resistance
When calculate the running resistance of the vehicle, and for according to the following formula
The torque of the engine is calculated in real time, and wherein Ft is the driving force that engine provides, igFor base ratio, i0For speed change
Case ratio, ηTFor transfer efficiency, r is tire radius, TtqFor motor torque.
7. vehicle emitted smoke system as claimed in claim 5, which is characterized in that the emissions data library module includes the 5th
Input module and data conversion module, the 5th input module is for inputting vehicle engine bench test emissions data, the data
Conversion module is for being converted to vehicle instantaneous emission data for the vehicle engine bench test emissions data and storing, the vehicle platform
The type that frame tests emissions data is volume fraction data type, and the type of the vehicle instantaneous emission data is qualitative data class
Type, the vehicle instantaneous emission data include multiple groups and revolving speed, torque and the one-to-one engine emission of the second vehicle parameter
Data.
8. a kind of vehicle emitted smoke method characterized by comprising
Calculate the instantaneous emissions data of test cycle；
Input empirical emissions data library；
Input the first vehicle parameter；
Discharge correction factor is inquired in the empirical emissions data library according to the first vehicle parameter；
The instantaneous emissions data of the test cycle is modified according to discharge correction factor, to obtain correcting discharge number in real time
According to；And
For calculating the accumulation emissions data of the test cycle in real time according to amendment emissions data, and export the accumulation discharge
Data.
9. vehicle emitted smoke method as claimed in claim 8, which is characterized in that input empirical emissions data library includes: defeated
Enter catalyst converter amendment database, input cold start-up amendment database inputs air-fuel ratio correction database, wherein the catalyst converter
Correcting database includes the data that corresponding catalyst converter correction factor is configured with catalyst converter, and database packet is corrected in the cold start-up
The data of cold start-up correction factor corresponding with cold start-up are included, the air-fuel ratio correction database includes corresponding with air-fuel ratio
Air-fuel ratio correction coefficient data；First vehicle parameter of input includes catalyst converter configuration, cold start-up operating condition and air-fuel ratio, root
Inquiring discharge correction factor in the empirical emissions data library according to the first vehicle parameter includes: to be configured according to catalyst converter described
Catalyst converter, which is corrected, inquires catalyst converter correction factor in database, inquired from cold start-up amendment database according to cold start-up operating condition cold
Start correction factor, air-fuel ratio correction coefficient is inquired from air-fuel ratio correction database according to air-fuel ratio.
10. vehicle emitted smoke method as claimed in claim 8, which is characterized in that first vehicle parameter includes catalysis
Device configuration, cold start-up operating condition, air-fuel ratio；Discharge amendment system is inquired in the empirical emissions data library according to the first vehicle parameter
Number includes: to inquire catalyst converter correction factor in catalyst converter amendment database according to catalyst converter configuration, according to cold start-up work
Condition inquiry cold start-up correction factor from cold start-up amendment database, sky is inquired according to air-fuel ratio from air-fuel ratio correction database
Correction factor is compared in combustion.
11. vehicle emitted smoke method as claimed in claim 8, which is characterized in that according to discharge correction factor to the examination
It tests the instantaneous emissions data of circulation and is modified and include: to obtain correcting emissions data in real time
The instantaneous emissions data of the test cycle is modified according to the catalyst converter correction factor；It is repaired according to the cold start-up
Positive coefficient is modified the instantaneous emissions data of the test cycle；
The instantaneous emissions data of the test cycle is modified according to air-fuel ratio correction coefficient.
12. vehicle emitted smoke method as claimed in claim 8, which is characterized in that calculate the instantaneous emissions data of test cycle
Include:
Input speed and the time of the test cycle of vehicle；
Input the second vehicle parameter；
The revolving speed of engine is calculated in real time according to the speed of the test cycle and time and second vehicle parameter and is turned
Square；
Arrange and store vehicle engine bench test emissions data；
According to the revolving speed, torque and the second vehicle parameter, real-time query is sent out from the vehicle engine bench test emissions data
The emissions data of motivation and output.
13. vehicle emitted smoke method as claimed in claim 12, which is characterized in that second vehicle parameter includes that master subtracts
Speed ratio, gearbox ratio, transfer efficiency and tire radius, according to the speed of the test cycle and time and second vehicle
Parameter calculates the revolving speed of engine in real time and torque includes:
According to the speed of the test cycle and time and the base ratio, gearbox ratio, transfer efficiency and tire radius
The running resistance of the vehicle is calculated in real time；
Further according to following formula
The torque of the engine is calculated in real time, and wherein Ft is the driving force that engine provides, igFor base ratio, i0For speed change
Case ratio, ηTFor transfer efficiency, r is tire radius, TtqFor motor torque；
Calculate the traveling resistance of the vehicle in real time according to the speed of the test cycle and time and second vehicle parameter
Power includes:
Second vehicle parameter includes rolling resistance equivalent value, coefficient of air resistance equivalent value, according to the test cycle
When speed and second vehicle parameter calculate the air drag and rolling resistance of vehicle in real time, F according to the following formulaW=a+
bμ2The air drag and rolling resistance of vehicle are calculated in real time, wherein FWFor the sum of the air drag of vehicle and rolling resistance, a is
Rolling resistance equivalent value, b are coefficient of air resistance equivalent value, and μ is the speed of test cycle, alternatively, second vehicle parameter
Including the driving parameters obtained by vehicle sliding test, according to the speed of the test cycle and second vehicle parameter
When calculating the air drag and rolling resistance of vehicle in real time, F according to the following formulaW=A+B μ+C μ2The air of vehicle is calculated in real time
Resistance and rolling resistance, wherein FWFor the sum of the air drag of vehicle and rolling resistance, A, B, C is that vehicle sliding test obtains
Driving parameters, μ be test cycle speed；
Calculate the acceleration resistance of vehicle in real time according to the speed of the test cycle and second vehicle parameter；
Calculate the gradient resistance of vehicle in real time according to second vehicle parameter；
The vehicle is calculated in real time according to the conjunction of the air drag of the vehicle, rolling resistance, acceleration resistance and gradient resistance
Running resistance.
14. vehicle emitted smoke method as claimed in claim 8, which is characterized in that arrange and storage vehicle engine bench test is arranged
When putting data, vehicle engine bench test emissions data is first inputted, then the vehicle engine bench test emissions data is converted into vehicle wink
State emissions data simultaneously stores, and the type of the vehicle engine bench test emissions data is volume fraction data type, the vehicle wink
The type of state emissions data is qualitative data type, and the vehicle instantaneous emission data include multiple groups and revolving speed, torque and second
The one-to-one engine emission data of vehicle parameter.
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| Publication number | Priority date | Publication date | Assignee | Title |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0930425A2 (en) * | 1998-01-14 | 1999-07-21 | Nissan Motor Company, Limited | Exhaust emission control system for internal combustion engine |
| EP0943792A2 (en) * | 1998-03-18 | 1999-09-22 | Nissan Motor Company, Limited | Exhaust emission control system for internal combustion engine |
| JP2005054632A (en) * | 2003-08-01 | 2005-03-03 | Nissan Diesel Motor Co Ltd | Exhaust emission control device |
| US20050119822A1 (en) * | 2003-12-02 | 2005-06-02 | Gopichandra Surnilla | Computer device to calculate emission control device functionality |
| CN102032058A (en) * | 2009-09-30 | 2011-04-27 | 通用汽车环球科技运作公司 | Control system and method using geometry based exhaust mixing model |
| CN105604664A (en) * | 2015-12-23 | 2016-05-25 | 北京工业大学 | Vehicle emission remote monitoring system based on OBD (on-board diagnostics) detection data |
-
2018
- 2018-04-26 CN CN201810408864.5A patent/CN110410187B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0930425A2 (en) * | 1998-01-14 | 1999-07-21 | Nissan Motor Company, Limited | Exhaust emission control system for internal combustion engine |
| EP0943792A2 (en) * | 1998-03-18 | 1999-09-22 | Nissan Motor Company, Limited | Exhaust emission control system for internal combustion engine |
| JP2005054632A (en) * | 2003-08-01 | 2005-03-03 | Nissan Diesel Motor Co Ltd | Exhaust emission control device |
| US20050119822A1 (en) * | 2003-12-02 | 2005-06-02 | Gopichandra Surnilla | Computer device to calculate emission control device functionality |
| CN102032058A (en) * | 2009-09-30 | 2011-04-27 | 通用汽车环球科技运作公司 | Control system and method using geometry based exhaust mixing model |
| CN105604664A (en) * | 2015-12-23 | 2016-05-25 | 北京工业大学 | Vehicle emission remote monitoring system based on OBD (on-board diagnostics) detection data |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113239963A (en) * | 2021-04-13 | 2021-08-10 | 联合汽车电子有限公司 | Vehicle data processing method, device, equipment, vehicle and storage medium |
| CN113239963B (en) * | 2021-04-13 | 2024-03-01 | 联合汽车电子有限公司 | Method, device, equipment, vehicle and storage medium for processing vehicle data |
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