| 摘要 |
<p>There is disclosed an exhaust gas purifying device which has a less increase of pressure drop and can purify an exhaust gas with a high efficiency. An exhaust gas purifying device 100 comprises a honeycomb catalyst 10 including a first honeycomb base material 6 having partition walls 5 arranged to form a plurality of cells 4 and a three way catalyst; a plugged honeycomb structure 20 including a second honeycomb base material 16 having partition walls 15 arranged to form a plurality of cells 14, and plugged portions 8 arranged to plug open frontal areas of predetermined cells 14a and remaining cells 14b; and a can member 30 containing the honeycomb catalyst 10 and the plugged honeycomb structure 20. A value of a ratio of a length of the honeycomb catalyst 10 with respect to a length of the plugged honeycomb structure 20 is from 0.1 to 0.5, any catalyst is not loaded onto the plugged honeycomb structure 20, a cell density of the first honeycomb base material 6 is larger than that of the second honeycomb base material 16, an open area ratio in a first inflow side end face 2 is larger than that in a second inflow side end face 12, and a diameter of the honeycomb catalyst 10 is equal to that of the plugged honeycomb structure 20.</p> |
