Exhaust gas analysis device, exhaust gas analysis method, and program storage medium for exhaust gas analysis device

An exhaust gas analysis method that is employed to analyze exhaust gas generated as a result of fuel being combusted in which:

• a concentration of a component to be measured in the exhaust gas is measured by a first analyzer;
• a concentration of CO2 in the exhaust gas is measured;
• a concentration of moisture in the exhaust gas is estimated based on the concentration of CO2 and on a ratio between hydrogen and carbon composing the fuel;
• and
• effects of moisture on the concentration of the component to be measured are corrected based on the concentration of moisture and a sensitivity coefficient that shows a relationship between the concentration of moisture and a sensitivity of the first analyzer.

A non-transitory computer-readable storage medium containing instructions for a program for an exhaust gas analysis device that analyzes exhaust gas generated as a result of fuel being combusted and comprises a first analyzer that measures a concentration of a component to be measured in the exhaust gas, and a second analyzer that measures a concentration of CO2 in the exhaust gas, wherein the instructions when executed by a computer cause the computer to perform functions of:

• a storage portion that stores a hydrogen/carbon ratio, which is a ratio between hydrogen and carbon composing the fuel;
• a moisture concentration estimating portion that, based on the concentration of CO2 and on the hydrogen/carbon ratio of the fuel, estimates a concentration of moisture in the exhaust gas;
• and
• a correcting portion that, based on the concentration of moisture and a sensitivity coefficient that shows a relationship between the moisture concentration and a sensitivity of the first analyzer, corrects effects of moisture on the concentration of the component to be measured.