| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an exhaust gas purification system capable of efficiently regenerating a DPF (diesel particulate filter) by raising temperature of exhaust gas flowing into a DPF device, in regard to an exhaust emission control system provided with the DPF device for catching particular material in the exhaust gas of an internal combustion engine for elimination. <P>SOLUTION: This exhaust gas purification system 1 is provided in an exhaust gas passage 2 of the internal combustion engine and provided with the DPF device 3 for catching particular material in the exhaust gas. This exhaust gas purification system 1 is provided with a heat exchanging means 4 in an exhaust gas passage 2u upstream of the DPF device 3, and the whole or a part Gdb of the exhaust gas Gd downstream of the DPF device 3 is supplied to the heat exchanging means 4 to heat the exhaust gas Gu upstream of the DPF device 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
