| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To accurately infer amount of particulate matter caught by a filter carrying oxidation catalyst based on pressure loss of exhaust gas by the filter in an exhaust emission control device for an internal combustion engine provided with the filter. <P>SOLUTION: In this exhaust emission control device for the internal combustion engine provided with the filter provided in an exhaust passage of the internal combustion engine, carrying catalyst having oxidation function, and catching particulate matter in exhaust gas and a pressure loss detection means for detecting pressure loss of exhaust gas by the filter, it is inferred that amount of particulate matter caught by the filter is zero (S103) in a period of time until pressure loss detected by the pressure loss detection means reaches a pressure loss saturation condition, and after pressure loss reaches the pressure loss saturation condition, amount of particulate matter caught by the filter is inferred based on an operation condition of the internal combustion engine (S104, S105). <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
