| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve fuel consumption during manual DPF regeneration in an exhaust gas purifier for a working vehicle such as a combine or a tractor. <P>SOLUTION: An exhaust gas purifier includes: a regeneration command section 55 commanding the manual regeneration of a DPF 22; an activation determination section 52 which determines whether the temperature of an oxidation catalyst 21 reaches an activation temperature for activating the oxidation catalyst 21; engine rotation speed control sections 34, 50 in which an engine rotation speed is controlled to a first rotation speed N1 when manual regeneration is commanded by the regeneration command section 55, and when it is determined by the activation determination section 52 thereafter that the temperature of the oxidation catalyst 21 reaches the activation temperature, the engine rotation speed is controlled to a second rotation speed lower than the first rotation speed N1; and fuel supply sections 37, 50 in which fuel to a diesel engine 10 is supplied in such a manner that non-combustion fuel is guided to the oxidation catalyst 21 by the flow of exhaust gas when it is determined by the activation determination section 52 that the temperature of the oxidation catalyst 21 reaches the activation temperature. <P>COPYRIGHT: (C)2013,JPO&INPIT |
