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Devices and methods for measuring granular material discharged by vehicle

A particle and particle concentration technology, which is used in measurement devices, particle suspension analysis, special data processing applications, etc., and can solve problems such as inability to meet vehicle particle emission testing applications and low sensitivity

Inactive Publication Date: 2008-01-30
CHINA AUTOMOTIVE TECH & RES CENT
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned method and device for measuring flue gas flow velocity and particle concentration have wide application value in coal-fired power plants, cement plants, metal smelters and other fields. However, due to its low sensitivity to vehicle particle emissions with small particle sizes, It still cannot meet the application in vehicle particle emission test

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  • Devices and methods for measuring granular material discharged by vehicle
  • Devices and methods for measuring granular material discharged by vehicle
  • Devices and methods for measuring granular material discharged by vehicle

Examples

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Embodiment Construction

[0031] Below in conjunction with the accompanying drawings and specific embodiments, how the present invention realizes its testing function will be further described.

[0032] As shown in Figure 1, the device for measuring vehicle particle emissions of the present invention includes a sampling probe 7 and a sample diluter 3 that are sequentially connected between the exhaust pipe 10 and the particle concentration tester 4, thereby forming a gas flow path; The sample diluter 3 is connected with a dilution gas control device, and the dilution gas control device includes an air compressor 13, an air drying filter 11 and a pressure controller 14 connected in sequence, and the air provided by the air compressor 13 passes through the air drying filter 11 Drying and filtering, the pressure B of the diluted gas after drying and filtering is controlled by the pressure controller 14, and the diluted gas enters the sample diluter 3 and mixes with the tail gas flowing in from the above-me...

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Abstract

The invention discloses a vehicle particle emission measuring device which comprises a particle concentration tester and a data recording and processing module. A tail pipe is sequentially connected with a sampling probe and a sampling dilutor before being communicated with the particle concentration tester, thereby forming a gas flux channel. The sampling dilutor is connected with a diluting control device. The particle concentration tester is connected with a vacuum pump. A pressure sensor and an exhaust flow-meter are arranged in the tail pipe respectively. The pressure sensor, the exhaust flow-meter and the particle concentration tester transmit signals to a data recording and processing module respectively. The invention also discloses a method employing the mentioned measuring devices for vehicle particle emission measurement. The device of the invention arrives at the amount of the mass of particle matters exhausted during the testing process by calculating the data collected by relevant devices, instead of weighing, and can reflect objectively the weight of particle matters exhausted during any test time period, which in turn can play an important role in making effective control tactics.

Description

technical field [0001] The invention relates to a system for measuring the flow rate and concentration of flowing solid materials continuously passing through an instrument, in particular to a measuring system for the flow rate and concentration of motor vehicle particle emissions in roads or other situations. Background technique [0002] For the measurement of motor vehicle exhaust emissions, the measurement, analysis and calculation of gaseous emission pollutants are mature, but the measurement of particulate matter is currently limited to the filter paper weighing method, and real-time measurement cannot be realized. At present, although there are many foreign technologies that can collect the transient emission concentration of particulate matter, they cannot directly measure the total mass. Therefore, there is no feasible and mature technical means for the actual road emission measurement of particulate matter. [0003] In the prior art, the detection method of motor ...

Claims

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Application Information

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IPC IPC(8): G01N15/06G06F19/00
Inventor 李孟良张远军高继东秦孔建
Owner CHINA AUTOMOTIVE TECH & RES CENT
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