| 摘要 |
<p>This exhaust gas purification device is provided with a columnar exhaust gas treatment body, a casing which comprises a tubular body that houses the exhaust gas treatment body, and a mat which comprises inorganic fibers and is inserted between the exhaust gas treatment body and the casing. This exhaust gas purification device is characterized in that the contour of the exhaust gas treatment body, in a cross section perpendicular to the longitudinal direction, comprises three to six corner sections and connecting sections which connect the corner sections of the exhaust gas treatment body; the corner sections of the exhaust gas treatment body are curved, the connecting sections of the exhaust gas treatment body are straight or curved, and the distance from the corner sections of the exhaust gas treatment body to the inner peripheral surface of the casing is greater than the distance from the connecting sections of the exhaust gas treatment body to the inner peripheral surface of the casing.</p> |
