Diluting, sampling and testing system for exhaust smoke of combustion chamber

Abstract

The invention discloses a combustion chamber tail gas smoke dilution sampling test system, which comprises a sampling probe, which is of a tubular structure, the gas inlet end of the sampling probe is of a funnel-shaped structure, and the position of the sampling probe corresponds to the position of a tail gas discharge pipe of a combustion chamber; the device further comprises a first dilution sampling part; the device further comprises a second dilution sampling part; a temperature gauge and a pressure gauge are fixedly mounted on the staying chamber; a tail gas detection sensor is further fixedly mounted on the staying chamber, and a particulate matter sampling part is further arranged on the staying chamber. An existing flue gas dilution sampling mode is improved, dilution operation is completed through one-time hot air dilution and one-time cold air dilution, it is firstly guaranteed that particulate matter condensation is avoided in the tail gas conveying process, and meanwhile particulate matter in the tail gas can be rapidly condensed during measurement, so that the detection efficiency is improved.

Description

technical field [0001] The invention relates to an exhaust gas sampling and detection system, in particular to a combustion chamber exhaust smoke dilution sampling and testing system. Background technique [0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as power sources, integrate advanced technologies in vehicle power control and drive, and form vehicles with advanced technical principles, new technologies, and new structures. Unconventional vehicle fuels refer to fuels other than gasoline and diesel. However, the use of fuel will produce exhaust gas. Therefore, it is necessary to detect the exhaust gas produced by new energy vehicles and compare it with the existing vehicle exhaust gas to improve the development of new energy vehicles. Judging from the current practical application, the detection of automobile exhaust generally adopts the direct sampling method, that is, the automobile exhaust is directly introduced into the detection i...

AI Technical Summary

Problems solved by technology

This method has been fully applied in the current exhaust gas detection. The clean air is mixed with the exhaust gas to carry out the stop detection. Firstly, the content of harmful substances can be reduced, and the service life of the instrument can be increased. At the same time, it can effectively detect the condensed harmful particles, and can simulate During the change process of the exhaust gas being discharged into the atmosphere, the detection accuracy is increased; however, there are still some problems in the current dilution sampling test method. At present, a single dilution air is mixed with the exhaust gas for dilution sampling, and heating is carried out when the exhaust gas is introduced. Keep the temperature, so that the harmful particles in the exhaust gas will still condense to a certain extent during the transportation process, and at the same time, the harmful particles in the exhaust gas will be condensed by natural cooling during the test, resulting in low overall efficiency of the test

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