| 摘要 |
<p> The hydraulic shovel (1) of the invention is provided with: an urea solution injection device (25), an urea solution tank (23), a pump (24), a first pipe (31) and a second pipe (33). The urea solution injection device (25) is arranged in an engine compartment (10) and injects the urea solution used in purification treatment of the exhaust gas in the exhaust gas. The urea solution tank (23) stores the urea solution. The pump (24) pumps up the urea solution from the urea solution tank (23) and supplies it to the urea solution injection device (25). The first pipe (31) connects the urea solution tank (23) and the pump (24) and supplies the urea solution from the urea solution tank (23) to the pump (24). The second pipe (33) connects the pump (24) and the urea solution injection device (25) and while supplying the urea solution from the pump (24) to the urea solution injection device (25), has a diameter inferior to the diameter of the first pipe (31).</p> |
