| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To regenerate a DPF even before the warmup of an engine. <P>SOLUTION: The engine 1 includes an oxidation catalyst 41a disposed in an exhaust passage 40, and the DPF 41b disposed at the downstream of the oxidation catalyst 41a in the exhaust passage 40. The engine 1 further includes a PCM 10 for filter-regenerating the DPF 41b. The PCM 10 makes an injector 18 perform main injection and post injection for injecting fuel for generating combustion continuing from main combustion when the engine 1 is in an operation region of a prescribed low load and performs adjustment so that the lower the temperature of the engine 1 is, the larger the number of times of post injection is. The PCM 10 executes filter regeneration by making the injector 18 perform post injection for injecting fuel at timing for not generating combustion continuing from the main combustion when the temperature of the engine 1 is a prescribed first temperature or higher that is lower than a second temperature which is a temperature at which it can be determined that warmup has been completed. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
