| 摘要 |
<p>An aftertreatment device for purifying exhaust gases of a vehicle internal combustion engine. The aftertreatment device comprises a catalyst substrate and an inlet cone 285 from which exhaust gases reach the catalyst substrate. The inlet cone comprises a baffle 330 accommodated inside the inlet cone, and configured to realize a flow uniformity index (Ul), representing the percentage of utilized catalyst volume, higher than a flow uniformity index threshold. The baffle may be a shaped metal sheet, or an inner cone which is downscaled with respect to the inlet cone.</p> |
