| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a filter device for purifying an exhaust gas in which a particulate material (PM) is prevented from being deposited on an end surface in an exhaust gas inflow side while both improving a collection efficiency of PM and preventing an increase of exhaust gas pressure loss. <P>SOLUTION: The filter device for purifying an exhaust gas comprises: a plurality of exhaust gas flow paths; and a filter 3 disposed in the exhaust gas flow paths, the exhaust gas flow path having: a filter introduction portion 100 for introducing the exhaust gas to the filter 3; and a filter bypass portion 200 for diverging the filter introduction portion 100 to the exhaust gas flow paths adjacent thereto to be bypassed, the filter bypass portion 202 in the most upstream being disposed toward the upper stream side than the filter introduction portion 100 in the most upstream and opened to an end surface in an exhaust gas inlet side, wherein the exhaust gas firstly passes through the filter bypass portion 202 in the most upstream and therefore PM can be prevented from being deposited on an end surface in an exhaust gas inflow side, whereby hardly causing clogging of PM on the end surface. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
