| 摘要 |
The exhaust gas particle filter has a parabola shaped recess in the core ensuring that the inlet flow of the exhaust gases is directed towards the central filter part. The latter has a lower degree of separation relative to the outer filter part-caused by increased filter porosity and smaller mass-so that the exhaust gases flow through the central filter part in the initial phase. Its larger filter porosity and the small mass cause the temperature reduction of the exhaust gas flowing through to remain small so that a downstream supercharger can respond rapidly. Since the separation of soot particles initially occurs primarily in the central filter part, rapid deposition occurs-despite its low degree of separation-so that the resistance during the operation following the acceleration phase becomes similar to that of the surrounding outer filter part. The latter then offers the capacity of separating soot particles over a longer period without regeneration. |
