Exhaust gas analysis system

Abstract

The invention provides an exhaust gas analysis system which urges a user to conduct a purge in an exhaust gas flow line by not only informing the user of the timing that the purge is necessary from the exhaust gas analysis system but also making it easy for the user to recognize the information. The exhaust gas analysis system comprises an exhaust gas flow line (L) where an exhaust gas flows, a measurement device 2, 3 that is arranged in the exhaust gas flow line (L) and that includes a pollutant component meter to measure a pollutant component to be a cause of pollutant of the exhaust gas flow line, and a display control device 5 that compares a measurement signal value obtained by the pollutant component meter or its arithmetic value with a predetermined pollutant tolerance and that displays a warning window on a display 21 in case that the measurement signal value or the arithmetic value exceeds the predetermined pollutant component tolerance.

Description

technical field [0001] The present invention relates to an exhaust gas analysis system for analyzing components contained in exhaust gas discharged from an engine, for example. Background technique [0002] As the exhaust gas analysis system, carbon monoxide (CO), total hydrocarbons (THC), nitrogen oxides (NO X ), carbon dioxide (CO 2 ) etc. to measure. [0003] Specifically, the exhaust gas analysis system includes: an exhaust gas flow line in which engine exhaust flows; and a measuring device arranged on the exhaust flow line to measure The various components contained in the exhaust gas flowing in the flow line. [0004] In the exhaust gas analysis system, in order to remove the dirt in the exhaust gas flow line upstream of the measurement device, as shown in Patent Document 1, it has been conventionally performed a purge process after the exhaust gas measurement is completed. , the purge process supplies a large amount of clean purge gas to the exhaust flow pipeline ...

AI Technical Summary

Problems solved by technology

[0005] However, sometimes there is a problem that the user forgets to perform the purge process after the exhaust gas measurement is completed.

In addition, there is sometimes a problem that there is a user who thinks that even if the purge process is not performed after each exhaust gas measurement, as long as the measurement error of the subsequent exhaust gas measurement is negligible, there is no problem. problem, so no purge is performed after exhaust

As mentioned above, if the next exhaust gas measurement is carried out without purging after the exhaust gas measurement is completed, the pollutant components (such as THC, etc. Sexual components) will be measured in the next exhaust gas measurement, resulting in measurement errors

In addition, it is difficult to objectively judge whether the measurement error is negligible, and it is unclear whether the measured concentration of the pollutant component is caused by the increase in the concentration of the pollutant component contained in the exhaust gas, or is caused by the pollution attached or remaining in the pipeline. caused by ingredients

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