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Motor vehicle exhaustion particle and volatile organic pollutant different-working-condition sampling system

A technology of volatile organic and exhaust particles, which is applied in the direction of sampling, analyzing materials, sampling devices, etc., can solve the problem of not being able to reflect the characteristics of vehicle emissions, and achieve the effect of a wide range of applications

Pending Publication Date: 2018-06-01
TSINGHUA UNIV
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Problems solved by technology

[0004] In order to solve the technical problem that the existing time-segmented off-line sampling method cannot reflect the emission characteristics of the vehicle under various working conditions, the present invention provides a vehicle exhaust particulate matter and volatile organic pollutant component that can be used for actual road vehicle testing. Working condition sampling system

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  • Motor vehicle exhaustion particle and volatile organic pollutant different-working-condition sampling system

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Embodiment Construction

[0031] The present invention will be further explained below in conjunction with the accompanying drawings.

[0032] see figure 1 In this embodiment, the sampling system for motor vehicle exhaust particulate matter and volatile organic pollutants in different working conditions includes a control host 4, and a VOCs off-line sampler 1 in different working conditions connected to the control host 4, and off-line sampling of PM and SVOCs in different working conditions. Instrument 2;

[0033] The off-line VOCs sampler 1 according to working conditions includes a first working condition sampling controller 14 connected to the control host 4 and three VOCs sampling channels arranged in parallel; the three VOCs sampling channels correspond to three vehicle speeds of low speed, medium speed and high speed respectively section, or respectively corresponding to low, medium, and high exhaust gas flow sections; in other embodiments, there may also be more than three VOCs sampling channe...

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Abstract

The invention aims at solving the technical problems that the existing time-piecewise offline sampling method cannot reflect the emission characteristics of a vehicle under various working conditions,and provides a motor vehicle exhaustion particle and volatile organic pollutant different-working-condition sampling system applicable to the actual road vehicle-mounted test. By arranging a plurality of parallel sampling channels, a different-working-condition sampling controller is used to control the opening and closing of the sampling channel according to an instantaneous car speed / exhaustionflow rate, so that the synchronous sampling of volatile organic matters, particles and semi-volatile organic matters under different working conditions can be realized, and a sampling result can wellreflect the emission characteristic of the vehicle under different working conditions. The motor vehicle exhaustion particle and volatile organic pollutant different-working-condition sampling systemis wide in application range, capable of flexibly setting the number of corresponding sampling channels and the car speed / flow rate range of each channel, and capable of meeting different test requirements.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring instruments, and relates to a sampling system for motor vehicle tail gas particles and volatile organic pollutants in different working conditions. Background technique [0002] With the increase of the number of motor vehicles in recent years, motor vehicle emissions have gradually become the main source of air pollution. The pollutants emitted by motor vehicles contain a large amount of solid and gaseous organic compounds (such as polycyclic aromatic hydrocarbons, etc.), which seriously endanger human health. In order to better control motor vehicle emissions, a lot of testing and research work is needed. Traditionally, motor vehicles (or engines) have been primarily simulated on laboratory benches. The current emission standards only require laboratory bench tests to carry out time-segmented off-line sampling of motor vehicle exhaust particulate matter (PM), but there is no m...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22
CPCG01N1/2252G01N1/2205
Inventor 吴烨何立强胡京南郑轩李振华
Owner TSINGHUA UNIV
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