| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an engine exhaust purification device that can remove PMs from a DPF, and can recirculate exhaust gas during the regeneration of the DPF. <P>SOLUTION: The exhaust gas purification device includes: the DPF 60 which is arranged in a branched passage 50 out of branched passages 50, 52 which are formed by branching the middle of an exhaust passage 40 of an engine 10; a first valve 50a and a second valve 52a which open and close the branched passages 50, 52 at the upstream side of the DPF 60, respectively; an EGR pipe 54 which makes the branched passage 50 at the downstream side of the first valve 50a and an air-intake passage 20 of the engine 10 communicate with each other at the upstream side of the DPF 60; and an ECU 80 which controls the first valve 50a and the second valve 52a so as to close the branched passage 50 and to open the branched passage 52 at the regeneration of the DPF 60. <P>COPYRIGHT: (C)2012,JPO&INPIT |
