| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent corrosion and dirt of a pipe connected to a muffler outlet by sufficiently condensing moisture in exhaust gas in an exhaust muffler. SOLUTION: In an exhaust drain device of a stationary engine, a stationary engine E and an exhaust muffler 6 are cooled in order by engine cooling air A introduced in a soundproof case 9 by a ventilation fan 5, and condensed water W condensed in the exhaust muffler 6 is discharged through a drain 11. A main intake port 5a for sucking engine cooling air A in the soundproof case 9, and a auxiliary intake port 5b communicated with an exhaust gas cooling pipe 13 provided on the exhaust muffler 6 and for sucking gas cooling air (a) are provided on the ventilation fan 5. A load factor detecting means 17 for detecting the load factor of the engine E is provided, the air capacities of the engine cooling air A and gas cooling air (a) can be controlled by an air capacity control valve 16 through a valve controller 15 on the basis of a load factor signal J obtained from the load factor detecting means 17, and the air capacity is controlled by making gas cooling air (a) flowing in the exhaust gas cooling pipe 13 approximately inversely proportional to the load factor of the engine.</p> |
