| 摘要 |
<P>PROBLEM TO BE SOLVED: To maintain the temperature of a denitration catalyst at a high temperature, and avoid reduction in scavenging pressure to an engine, without causing use of a separate electric motor. <P>SOLUTION: This denitration device 200 includes a supercharger 250 having a first valve 256 for introducing exhaust gas upstream of a turbine 252, the denitration catalyst 214 for reducing the exhaust gas passed through the turbine of the supercharger, a first bypass pipe 210 branched off from an exhaust passage upstream of the turbine for bypassing the exhaust gas upstream of the turbine to the exhaust passage downstream of the turbine, a second valve 220 for adjusting a flow rate of the exhaust gas introduced to the first bypass pipe between a branch point to the first bypass pipe of the exhaust passage and a confluent point to the exhaust passage, a temperature detecting part 224 for detecting the temperature of an inlet of the denitration catalyst, and a valve adjusting part 226 for adjusting opening of the first valve and opening of the second valve based on the temperature detected by the temperature detecting part. <P>COPYRIGHT: (C)2013,JPO&INPIT |
