| 摘要 |
<p>A PM sensor which can, with the use of a simple configuration, accurately detect the amount of PM accumulated in a DPF. Two electrodes (4a, 4b) for forming a capacitor by sandwiching one or more partition walls are provided to a diesel particulate filter (DPF) (3) having a porous filter body (2) partitioned by a large number of partition walls. The amount of PM captured by the DPF (3) is detected from the capacitance of the capacitor.</p> |
