| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust gas analysis device that prevents moisture content from being condensed for a time until an exhaust gas reaches an analyzer to make exact analysis possible and can greatly reduce the amount of electric power consumed in exhaust gas temperature adjustment.SOLUTION: The present invention is a car onboard type exhaust gas analysis device 5 equipped with an analyzer 51 for analyzing moisture concentration in an exhaust gas, the device comprising a sampling line SL2 that is an exhaust gas flow channel from an exhaust gas introduction terminal IN2 into which an exhaust gas is introduced from the outside to the analyzer 51, a pressure reduction source 9 for reducing the pressure in the sampling line SL2 to a prescribed pressure, and a temperature adjustment mechanism 8 for adjusting temperature so that the exhaust gas flowing in the sampling line becomes a first temperature, the first temperature being set in the range from the evaporation temperature of moisture at the reduced prescribed pressure and over to below the evaporation temperature of moisture at one atmosphere of pressure. |
