| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve purification efficiency of exhaust gas of an engine by effectively using a space around a grain tank to set an exhaust gas purifier.SOLUTION: A starting end part of a DOC (diesel oxidation catalyst) part (16) is connected to an exhaust manifold (13) of an engine (11), a starting end part of SCR (selective catalytic reduction) (17) is connected to a terminal end side of the DOC (16) part, and the DOC part (16) and the SCR (17) are arranged below an inclined surface (21) formed in the inside lower part of a grain tank (5). The terminal end side of the DOC part (16) and the starting end part of the SCR (17) are connected to each other through an intermediate connection exhaust pipe (14B), a lateral part of the intermediate connection exhaust pipe (14B) between the DOC part (16) and the SCR (17) is formed with a recessed space (26), and a grain lifter (27) which feeds grains from a thresher (3) to the grain tank (5) is made to enter into the recess space (26).</p> |
