| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain the function of always keeping the filter function correctness by improving the function of a process gas flow meter and checking the filter function through the quantity of process gas regardless of operating conditions in DPF device. <P>SOLUTION: This DPF device includes: a gas flow meter 7 mounted on a release part to the air in cases 2, 2' of a closed structure in which the surface of a contamination filter element 5' is moved for updating and wound for recovery in catching and removing fine grain material such as carbon, and provided with a signal detecting mechanism for detecting a change in quantity of process gas whose fine grain material such as carbon is caught and removed; and a control unit 9 for outputting in real time in response to the input of a throttle position sensor 10 regardless of operating conditions to control the device of a stepping motor 6 for always keeping designated filter function accuracy. <P>COPYRIGHT: (C)2004,JPO</p> |
