| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an exhaust emission control device and an exhaust emission control method of properly purifying nitrogen oxides included in exhaust gas exhausted from an automobile and a factory. <P>SOLUTION: This exhaust emission control device is characterized by having a reactor 20 arranged in an exhaust passage 70 and discharging to the exhaust gas, a detecting means 40m for detecting the concentration of the nitrogen oxides in the exhaust gas in the exhaust passage 70 on the downstream side of the reactor 20, and a control means 50 for controlling output of the reactor 20 on the basis of a comparing result between the concentration of the nitrogen oxides detected by the detecting means 40m and a predetermined reference value; and controls the output of the reactor 20 on the basis of its comparing result by comparing the detected concentration of the nitrogen oxides with the predetermined reference value by detecting the concentration of the nitrogen oxides in the exhaust gas in the exhaust passage 70 on the downstream side of the reactor 20. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
