| 摘要 |
<p>PURPOSE:To enable burning timing to be accurately judged by sequentially integrating particulate weight having the rotational frequency of an engine or the like as parameter to figure out an amount of collected particulate. CONSTITUTION:A calculation control unit 2 detects the rotational frequency, load and intake air weight of an engine respectively through sensors 12, 13, 21 to read out the corresponding particulate weight from a map previously prepared by setting these detected amount as parameters. Said unit 2 repeats this process every predetermined time to integrate each particulate weight. And an amount of particulate collected in a filter 3 through an exhaust path of the engine 1 in a predetermined time is figured out. When that amount reaches a predetermined value, a controller of a firing unit 4 is driven to burn the particulate.</p> |
