| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an exhaust gas cleaning device that can suppress a drop in exhaust gas temperature of an exhaust gas.SOLUTION: An exhaust gas cleaning device 27a has a first inner cylinder 28x which removes particle substance in an exhaust gas of an engine 1 and a second inner cylinder 29x which removes nitrogen oxide substance in the exhaust gas in the engine, the first and second inner cylinders 28x and 29x being covered with an outer cylinder 29y. In the outer cylinder 29y, an urea mixing flow passage 73 is provided in an area between the first and second inner cylinders 28x and 29x, and an ammonia gas is mixed with the exhaust gas to flow in the second inner cylinder 29x.</p> |
