| 摘要 |
<p>PURPOSE:To prevent dry grass or a passerby from being burned by a method wherein in the case of a device for preventing the clogging of a filter by operating a clogging removing means such as a burner, the operation of the clogging removing means is stopped when the vehicle is stopped. CONSTITUTION:When exhaust gases from the diesel engine 1 reaches the filter 4 and then passes through the latter through an exhaust passage 3, carbon particles in the exhaust gases are collected and removed. In case where the filter 4 is clogged, a clogging detector 6 generates an output by detecting the clogging of the filter from the lowering of the resistance value between electrodes 5a and 5b. Thus a fuel pump 13 and an air pump 14 are driven by the output of the clogging detector 6 through a control circuit 16 and the burner 7 is operated by turning an ignition switch 9 ON to thereby remove the clogging. Further, when an output is generated from a vehicle stop detector 15 during the clogging removing operation, the operation of the burner 7 is stopped so that no unfavorable phenomenon takes place due to the operation of the burner 7.</p> |
