| 摘要 |
PROBLEM TO BE SOLVED: To improve reliability of hydraulic equipment, improve cooling performance of a cooler, cooling fans and an engine, and reduce noise by mutually effectively cooling an engine system and a hydraulic system. SOLUTION: An engine 8 is arranged in an engine room ER, an oil cooler 50, a cooler 100 such as a radiator 40 or an intercooler IC, first/second cooling fans 52, 53 for cooling the cooler and driving means 51, 501 of the first/second cooling fans are arranged outside the engine room, cooling air for cooling the cooler is made to flow along an outer wall of a front partition wall Wa of the engine room, intake of the cooling air from an intake port 46 arranged in a construction machine can be increased, and a rotating speed of the first/ second cooling fans of the cooler 100 can be properly controlled according to a temperature of a cooling medium. A heating fluid generated in the engine room ER is sucked in an external part to improve ventilating efficiency in the engine room.
|
