CN107870222A - One kind is used for motor vehicle PEMS equipment uniformity comparison methods and its system - Google Patents
One kind is used for motor vehicle PEMS equipment uniformity comparison methods and its system Download PDFInfo
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- CN107870222A CN107870222A CN201710923604.7A CN201710923604A CN107870222A CN 107870222 A CN107870222 A CN 107870222A CN 201710923604 A CN201710923604 A CN 201710923604A CN 107870222 A CN107870222 A CN 107870222A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/007—Arrangements to check the analyser
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2252—Sampling from a flowing stream of gas in a vehicle exhaust
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Abstract
The present invention provides one kind and is used for motor vehicle PEMS equipment uniformity comparison methods and its system, and its method is：1st, vehicle is placed on chassis dynamometer, the equivalent inertia of chassis dynamometer is set, vehicle and chassis dynamometer is reached operating temperature, the temperature and humidity in control environment storehouse；2nd, to motor vehicle, chassis dynamometer, emission test equipment and 4 kinds of PEMS emission tests equipment preheatings；3rd, gas leakage inspection is carried out to PEMS sampling systems；4th, the rotating speed and load of chassis dynamometer are adjusted by control system, carries out real road Work condition analogue, and record experimental data；5th, comparative experiments data, different PEMS equipment uniformity comparison analyses are realized.Process require that being carried out in the environment storehouse of controllable temperature, humidity and height above sea level, and emission test is carried out to same motor vehicle, ensure that research object and the uniformity of experiment condition so that the uniformity comparison result between different PEMS equipment is more accurate.
Description
Technical field
The invention belongs to engine exhaust detection technique field, and it is consistent to be used for motor vehicle PEMS equipment more particularly, to one kind
Property comparison method and its system.
Background technology
The test of motor vehicle emission pollutant is the importance of waste gas purification research, correctly tests the harmful row of motor vehicle
The content for putting thing is to study the important prerequisite of pollutant formation and its control technology.Due to the appearance of " masses discharge door " event,
Increasingly pay attention to the motor vehicle emission method of testing based on real road, European 6th stage emission mark in countries in the world
Standard, the discharge standard of U.S. EPA 2010 and the stage emission standard of China the 6th all successively introduce using on-board emission test system-
A kind of PEMS (Portable Emissions Measurement System) emission test method, as vehicular emission
Test and management means.
System for testing discharge based on PEMS equipment can realize the measurement of pollutant emission under the actual road conditions of vehicle and expire
It is enough the requirement of Abgasgesetz, therefore PEMS emission test equipment is increasingly taken seriously.There are 4 kinds of main flows in the market
PEMS emission test equipment, is AVL on-board emission test systems respectively, Horiba on-board emission test systems, and Sensors is vehicle-mounted
System for testing discharge, TESTO on-board emission test systems.
Because PEMS emission tests method has just introduced, according to the requirement of China's laboratory room managing, emission test equipment needs
There is the uniformity that Comparability test method proves each testing equipment.PEMS emission tests equipment is that mobile test equipment and tradition are real
It is different to test room equipment, can be run under different temperatures, humidity and altitude conditions, in order to realize different brands PEMS equipment test one
The checking of cause property, a kind of motor vehicle PEMS equipment uniformity comparison methods and its system of being used for of research and development is a urgent problem to be solved.
The content of the invention
In view of this, the present invention is directed to propose a kind of be used for motor vehicle PEMS equipment uniformity comparison methods and its system,
Can accurate evaluation difference PEMS equipment exhaust emission testing it is horizontal, realize the uniformity contrast between different PEMS equipment.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
One kind is used for motor vehicle PEMS equipment uniformity comparison systems, including chassis dynamometer, environment storehouse, emission test are set
Standby and an offer pollutant sources motor vehicles, the chassis dynamometer are arranged in environment storehouse, and motor vehicle is placed on into chassis
To be tested on dynamometer machine, chassis dynamometer can realize the simulation of different road conditions by loading load and changing rotating speed,
The blast pipe of motor vehicle connects sampling pipe first, then connects emission test equipment by utilidor, and sampling pipe connection is multiple
PEMS equipment, realize the collection of same motor-vehicle tail-gas, control system control chassis dynamometer and emission test equipment.
Further, several samplings that the sampling pipe includes sampling pipe body and is arranged on sampling pipe body are visited
Pin, the sample probe and sampling pipe tube body wall vertical connection, and extend in body, the sample probe is extended in body
Length be body radius, the angle between two neighboring sample probe is 70 ° -80 °, the interval between the sample probe
For 1.5 times of sample tube inner diameter, the sample probe of sampling pipe body both sides connects apart from body end 200mm, each sample probe
Connect a PEMS equipment.
Further, because sampling pipe is directly connected to motor vehicle exhaust, the sampling pipe body is using resistant to elevated temperatures
Material is made.
Further, the equipment and the row of tested vehicle that the length of the sampling pipe body and internal diameter should connect as needed
Pipe is put to set, if the total length of sampling pipe body is more than 1m, reply sampling pipe takes Insulation, i.e., outside sampling pipe
It is enclosed with insulation material.
Further, the angle between two neighboring sample probe is preferably 75 °.
Further, when arranging sample probe, the sample probe of particulate matter quantity is sampled installed in gas pollutant
The upstream of probe, the design and installation mode of this sampling pipe can ensure that using between probe interference will not be produced.
Further, the rotating speed of the chassis dynamometer, load can adjust, and the environment storehouse is controllable temperature, humidity, sea
The environment storehouse pulled out, the emission test equipment are Horiba Full flow dilution CVS emission test equipment.
Further, cooling blower is installed in the front end of chassis dynamometer, for simulating actual vehicle in road driving
During windage.
Further, the PEMS equipment has four kinds, is AVL on-board emission tests system, Horiba vehicle-mounted discharges respectively
Test system, Sensors on-board emission tests system and TESTO on-board emission test systems.
It is used for motor vehicle PEMS equipment uniformity comparison methods according to what said system used, its step is as follows：
Step 1：Experimental facilities is attached as requested, sampling pipe is directly installed on motor vehicle exhaust, will not
Same PEMS equipment is attached with sample probe, it is desirable to particulate count amount sample probe is arranged on into gas pollutant sampling and visited
The upstream of pin, at the same ensure distance between each sample probe, angle and insert sampling pipe depth it is correct；Motor vehicle is placed
On chassis dynamometer and take appropriate method that vehicle is fixed, it is ensured that experiment safety；Working as chassis dynamometer, is set
Inertia is measured, vehicle and chassis dynamometer is reached operating temperature with suitable method；The temperature stabilization in environment storehouse is controlled at 20 DEG C,
Moisture stable is 30%.
Step 2：Motor vehicle is preheated, makes ECT more than 70 DEG C, or the temperature when coolant
The change spent within 5 minutes is less than 2 DEG C；To chassis dynamometer, Horiba Full flow dilutions CVS emission tests equipment and multiple
PEMS emission tests equipment preheats, and is allowed to ready.
Step 3：Gas leakage inspection is carried out to PEMS sampling systems, is required according to equipment operation, performs the demarcation of gas
(zero standard determines and range designation).
Step 4：The rotating speed and load of chassis dynamometer are adjusted by control system, carries out 2 hour real road works
Condition is simulated, and records experimental data, completes experiment.
Step 5：Comparative experiments data, realize different PEMS equipment uniformity comparison analyses.
It is of the present invention to be used for motor vehicle PEMS equipment uniformity comparison methods and its system tool relative to prior art
There is following advantage：Process require that being carried out in the environment storehouse of controllable temperature, humidity and height above sea level, and same motor vehicle is entered
Row emission test, research object and the uniformity of experiment condition are ensure that, and PEMS equipment can be fully demonstrated in real road bar
Working condition under part；Different PEMS equipment measure simultaneously so that the uniformity comparison result between distinct device is more accurate；
Different PEMS equipment test results and standard Horiba Full flow dilution CVS exhaust apparatus test result comparative analyses so that PEMS
Equipment Conformance Assessment is more accurate；This method can simulate real road operating mode by the pre-set programs of chassis dynamometer, multiple
Existing property is high.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the equipment connection diagram of motor vehicle PEMS equipment uniformity comparison system of the present invention；
Fig. 2 is the control principle drawing of chassis dynamometer in motor vehicle PEMS equipment uniformity comparison system of the present invention；
Fig. 3 is the structural representation of sampling pipe in the present invention；
Fig. 4 is that present invention sampling length of tube is 850mm, structural representation when internal diameter is 100mm；
Fig. 5 is the schematic diagram of sample probe in sampling pipe of the present invention.
Description of reference numerals：
1- cooling blowers；2- environment storehouse；3- chassis dynamometers；4- motor vehicles；5- blast pipes；6-AVL on-board emission tests
System；7-Horiba on-board emission test systems；8-Sensors on-board emission test systems；9-TESTO on-board emission tests system
System；10- sampling pipes；11- utilidors；12-Horiba Full flow dilution CVS emission test equipment；13- control systems；14- is sampled
Pipe body；15- sample probes.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It is used for motor vehicle PEMS equipment uniformity comparison systems as shown in figure 1, a kind of, including rotating speed, load are adjustable
Chassis dynamometer 3, controllable temperature, humidity, the environment storehouse 2 of height above sea level, Horiba Full flow dilution CVS emission tests equipment 12 and one
The motor vehicle 4 of pollutant sources is provided, chassis dynamometer 3 is arranged in environment storehouse 2, and motor vehicle 4 is enterprising in chassis dynamometer 3
Row experiment, chassis dynamometer 3 can realize the simulation of different road conditions by loading load and changing rotating speed, in Chassis dynamometer
The front end of machine 3 is provided with cooling blower 1, for simulating windage of the actual vehicle during road driving.The exhaust of motor vehicle 4
Pipe 5 connects sampling pipe 10 first, then connects Horiba Full flow dilution CVS emission tests equipment 12, sampling by utilidor 11
Pipe 10 connects AVL on-board emission tests system 6, Horiba on-board emission tests system 7, Sensors on-board emission tests respectively
System 8 and TESTO on-board emission tests system 9, realize the collection of same motor-vehicle tail-gas, and control system 13 controls Chassis dynamometer
Machine 3 and Horiba Full flow dilution CVS emission tests equipment 12.
The sampling pipe includes sampling pipe body 14 and has different PEMS equipment according to different positions and angular distribution
Sample probe 15, because sampling pipe is directly connected to motor vehicle exhaust, the sampling pipe body 14 uses resistant to elevated temperatures material
It is made.Equipment that the length and internal diameter of the sampling pipe body 14 should connect as needed and the delivery pipe of tested vehicle are set
Fixed, if the total length of sampling pipe body 14 is more than 1m, reply sampling pipe takes Insulation.The sample probe 15 is with adopting
Sample pipe tube body wall vertical connection, the length that sample probe 15 is extended in body be body radius, two neighboring sample probe
Between angle be 70 ° -80 °, preferably 75 °.1.5 times at intervals of sample tube inner diameter between the sample probe 15, sampling
The sample probe 15 of the both sides of pipe body 14 is apart from body end 200mm.This sampling pipe is directly installed on motor vehicle exhaust, in cloth
When putting sample probe 15, the sample probe of particulate matter quantity is arranged on to the upstream of gas pollutant sample probe, this sampling
The design and installation mode of pipe can ensure that using between probe interference will not be produced.
It is used for motor vehicle PEMS equipment uniformity comparison methods according to what said system used, its step is as follows：
Step 1：Experimental facilities is attached according to Fig. 1, sampling pipe 10 is directly installed on motor vehicle exhaust, will
Different PEMS equipment is attached with sample probe 15, it is desirable to takes particulate count amount sample probe installed in gas pollutant
The upstream of sample probe, at the same ensure distance between each sample probe, angle and insert sampling pipe depth it is correct；By motor vehicle
4 are placed on chassis dynamometer 3 and take appropriate method that vehicle is fixed, it is ensured that experiment safety；Chassis dynamometer is set
The equivalent inertia of machine 3, vehicle and chassis dynamometer is set to reach operating temperature with suitable method；Control the temperature in environment storehouse 2 steady
20 DEG C are scheduled on, moisture stable is 30%.
Step 2：Motor vehicle 4 is preheated, makes ECT more than 70 DEG C, or when coolant
Change of the temperature within 5 minutes is less than 2 DEG C；To chassis dynamometer, Horiba Full flow dilutions CVS emission tests equipment and more
Individual PEMS emission tests equipment preheating, is allowed to ready.
Step 3：Gas leakage inspection is carried out to PEMS sampling systems, is required according to equipment operation, performs the demarcation of gas
(zero standard determines and range designation).
Step 4：The rotating speed and load of chassis dynamometer are adjusted by control system, carries out 2 hour real road works
Condition is simulated, and records experimental data, completes experiment.
Step 5：Comparative experiments data, realize different PEMS equipment uniformity comparison analyses.
Pass through Comparability test scheme, it is possible to achieve under the conditions of simulation real road, different temperatures, humidity and altitude conditions
PEMS equipment uniformity comparison is tested, and whole Comparability test process can be carried out according to 3 hours actual tests time, so as to fill
Completely assess the test result uniformity of PEMS equipment again under actual environment condition and service condition.Comparability test uses simultaneously
Horiba Full flow dilution emission test equipment surveys data on the basis of data, can be achieved to comment tested PEMS equipment measuring accuracies
Sentence.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (10)
1. one kind is used for motor vehicle PEMS equipment uniformity comparison systems, it is characterised in that：Including chassis dynamometer, environment storehouse,
The motor vehicle of emission test equipment and an offer pollutant sources, the chassis dynamometer are arranged in environment storehouse, will be motor-driven
Car is placed on chassis dynamometer and tested, and chassis dynamometer can realize different road works by loading load and changing rotating speed
The simulation of condition, one end of the blast pipe connection sampling pipe of motor vehicle, the other end of sampling pipe are surveyed by utilidor connection discharge
Equipment is tried, sampling pipe connects multiple PEMS equipment, realizes the collection of same motor-vehicle tail-gas, control system control chassis dynamometer
With emission test equipment.
2. one kind according to claim 1 is used for motor vehicle PEMS equipment uniformity comparison systems, it is characterised in that：The bottom of at
The front end of disk dynamometer machine is provided with cooling blower, for simulating windage of the actual vehicle during road driving.
3. one kind according to claim 1 or 2 is used for motor vehicle PEMS equipment uniformity comparison systems, it is characterised in that：
The sampling pipe includes sampling pipe body and several sample probes being arranged on sampling pipe body, and the sample probe is with adopting
Sample pipe tube body wall vertical connection, and extend in body, the length that the sample probe is extended in body is the radius of body,
Angle between two neighboring sample probe is 70 ° -80 °, between the sample probe at intervals of the 1.5 of sample tube inner diameter
Times, the sample probe of sampling pipe body both sides connects a PEMS equipment apart from body end 200mm, each sample probe.
4. one kind according to claim 2 is used for motor vehicle PEMS equipment uniformity comparison systems, it is characterised in that：It is described
PEMS equipment has four kinds, is AVL on-board emission tests system, Horiba on-board emission tests system, Sensors vehicle-mounted rows respectively
Put test system and TESTO on-board emission test systems.
5. one kind according to claim 4 is used for motor vehicle PEMS equipment uniformity comparison systems, it is characterised in that：It is described
Rotating speed, the load of chassis dynamometer be can adjust, and the environment storehouse is controllable temperature, humidity, the environment storehouse of height above sea level, and the discharge is surveyed
Examination equipment is Horiba Full flow dilution CVS emission test equipment.
A kind of 6. motor vehicle PEMS equipment uniformity comparison methods for system described in claim 3, it is characterised in that it is walked
It is rapid as follows：
Step 1：Experimental facilities is attached as requested, sampling pipe is directly installed on motor vehicle exhaust, will be different
PEMS equipment is attached with sample probe, it is desirable to which particulate count amount sample probe is arranged on into gas pollutant sample probe
Upstream, at the same ensure distance between each sample probe, angle and insert sampling pipe depth it is correct；Motor vehicle is placed on bottom
It is fixed on disk dynamometer machine and to vehicle, it is ensured that experiment safety；The equivalent inertia of chassis dynamometer is set, makes vehicle and chassis
Dynamometer machine reaches operating temperature；Control the temperature and humidity in environment storehouse；
Step 2：Motor vehicle is preheated, to chassis dynamometer, Horiba Full flow dilutions CVS emission tests equipment and more
Individual PEMS equipment preheating, is allowed to ready；
Step 3：Gas leakage inspection is carried out to PEMS sampling systems, is required according to equipment operation, performs the demarcation of gas；
Step 4：The rotating speed and load of chassis dynamometer are adjusted by control system, carries out multiple hours real road operating modes
Simulation, and experimental data is recorded, complete experiment；
Step 5：Comparative experiments data, realize different PEMS equipment uniformity comparison analyses.
7. one kind according to claim 6 is used for motor vehicle PEMS equipment uniformity comparison methods, it is characterised in that：In step
In rapid two, engine is preheated, makes ECT more than 70 DEG C, or when the temperature of coolant is at 5 points
Change within clock is less than 2 DEG C.
8. one kind according to claim 7 is used for motor vehicle PEMS equipment uniformity comparison methods, it is characterised in that：In step
In rapid three, the demarcation of gas determines including zero standard and range designation.
9. one kind according to claim 8 is used for motor vehicle PEMS equipment uniformity comparison methods, it is characterised in that：In step
In rapid four, the rotating speed and load of chassis dynamometer are adjusted by control system, carries out 2 hour real road Work condition analogues.
10. one kind according to claim 6 is used for motor vehicle PEMS equipment uniformity comparison methods, it is characterised in that：
In step 1, control environment storehouse temperature stabilization is at 20 DEG C, and moisture stable is 30%.
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| CN109580266A (en) * | 2018-12-10 | 2019-04-05 | 广西玉柴机器股份有限公司 | The PEMS test method of harvester |
| CN109655317A (en) * | 2019-01-18 | 2019-04-19 | 北京大学 | Motor-vehicle tail-gas on-road emission test platform and the method for sampling based on dynamic dilution method |
| CN111458374A (en) * | 2019-01-18 | 2020-07-28 | 上海沃尔沃汽车研发有限公司 | System for monitoring water condensation in dilution tunnel and method for vehicle emission test |
| CN111504735A (en) * | 2020-06-09 | 2020-08-07 | 天津内燃机研究所（天津摩托车技术中心） | Low CO generator set emission test system and test method |
| CN112285279A (en) * | 2020-09-21 | 2021-01-29 | 山东斯诺电子有限公司 | Malodorous gas detector with integrated temperature compensation technology |
| CN112485369A (en) * | 2020-11-09 | 2021-03-12 | 南昌智能新能源汽车研究院 | Performance verification test method of PEMS and linear inspection performance verification device thereof |
| CN112697442A (en) * | 2020-12-21 | 2021-04-23 | 中汽研汽车检验中心(昆明)有限公司 | Testing precision comparison method for PEMS equipment and bench emission testing equipment |
| CN113310704A (en) * | 2021-04-29 | 2021-08-27 | 中汽研汽车检验中心（天津）有限公司 | Data consistency test method for vehicle emission remote supervision system |
| CN114636561A (en) * | 2022-03-10 | 2022-06-17 | 一汽解放汽车有限公司 | PEMS test method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580266A (en) * | 2018-12-10 | 2019-04-05 | 广西玉柴机器股份有限公司 | The PEMS test method of harvester |
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| CN111504735A (en) * | 2020-06-09 | 2020-08-07 | 天津内燃机研究所（天津摩托车技术中心） | Low CO generator set emission test system and test method |
| CN112285279A (en) * | 2020-09-21 | 2021-01-29 | 山东斯诺电子有限公司 | Malodorous gas detector with integrated temperature compensation technology |
| CN112485369A (en) * | 2020-11-09 | 2021-03-12 | 南昌智能新能源汽车研究院 | Performance verification test method of PEMS and linear inspection performance verification device thereof |
| CN112697442A (en) * | 2020-12-21 | 2021-04-23 | 中汽研汽车检验中心(昆明)有限公司 | Testing precision comparison method for PEMS equipment and bench emission testing equipment |
| CN113310704A (en) * | 2021-04-29 | 2021-08-27 | 中汽研汽车检验中心（天津）有限公司 | Data consistency test method for vehicle emission remote supervision system |
| CN114636561A (en) * | 2022-03-10 | 2022-06-17 | 一汽解放汽车有限公司 | PEMS test method |
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Application publication date: 20180403 |