| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust gas purifying apparatus capable of surely removing NOx regardless of the operation condition of an internal combustion engine. <P>SOLUTION: A diesel engine 1 has an exhaust pipe 2 through which an exhaust gas discharged from the engine 1 flows. The exhaust pipe 2 is provided with an electrochemical reactor 3 in which gold or silver is used as a catalyst, and an alkaline earth metal salt as an auxiliary catalyst. Further, an NOx removing apparatus 4 is provided at a downstream side of the reactor 3. When an exhaust gas temperature measured by a temperature sensor 9 is lower than the set value previously set to an ECU 11, ECU 11 operates a power supply 10 and voltage is applied to the reactor 3. Thereby, NOx in the exhaust gas is occluded into the reactor 3. <P>COPYRIGHT: (C)2010,JPO&INPIT |
