Gas circuit system for measuring automotive tail gas in real time

Abstract

The invention discloses a gas circuit system for measuring automotive tail gas in real time, mainly comprising a sampling system, a water draining system, a gas exhausting system, a zero calibration system and a standard sample calibration system. The automotive tail gas is sampled in real time by the sampling system, thick particles in the sampled automotive tail gas is filtered out after the sampled automotive tail gas sequentially passes through the water draining system and the gas exhausting system, and simultaneously water and gas separation is realized to obtain the dried tail gas; the secondary filtering is carried out after the dried tail gas passes through the gas exhausting system to obtain the purified tail gas; the obtained purified tail gas is introduced into a non-scattering infrared measuring system to be performed with indicator detection, such as the concentrations of carbonic oxide, carbon dioxide and carbon hydrogen compound and the like; and additionally, the standard calibration and the zero calibration of the system can be realized by the zero calibration system and the standard sample calibration system so as to ensure the measuring precision. The gas circuit system of the invention has the advantages of stable, accurate and well-repeatable sampling, safety, reliability and the like.

Description

technical field [0001] The invention relates to an environment monitoring device, in particular to an air circuit system for real-time measurement of automobile exhaust. Background technique [0002] As one of the most important means of transportation in modern society, automobiles have brought great convenience to people's life and work, but the exhaust emitted by automobiles has also become another source of air pollution besides soot-type air pollution. . Correspondingly, the total amount of vehicle pollutant emissions is rising rapidly. All large and medium-sized cities in the country are deeply affected by automobile exhaust pollution. Therefore, it is of great significance to protect the living environment of human beings by detecting automobile exhaust pollution. [0003] With the increase of motor vehicles and the improvement of people's environmental awareness, my country has formulated a series of national standards such as GB3842-83, GB7258-87, and GB 1495-79 o...

AI Technical Summary

Problems solved by technology

Due to the complex traffic environment such as the road surface during the driving of the car, the exhaust emission is affected by many factors, which makes the exhaust emission complex and makes sampling difficult.

Due to the existence of the exhaust gas sampling problem, the exhaust emission has not been able to be monitored in real time

However, the technology of sampling the exhaust emissions of automobile engines in real time has not been reported yet.

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