| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction machine capable of improving cooling efficiency of working fluid.SOLUTION: A hydraulic shovel includes a controller 34 for controlling a motor 33 based on a detection result of an operation detector so that rotation speed of a fan 32 becomes non-operation time rotation speed N1 or N2 when a hydraulic actuator is not operated and the rotation speed of the fan 32 becomes operation time rotation speed N3 and N4 when the hydraulic actuator is operated. In a situation that a temperature of the working fluid is lower than a reference temperature Tth set in advance, when the non-operation time rotation speeds N1 and N2 and the operation time rotation speed N3 set under the condition that the temperature of the working fluid is equal are compared, the non-operation time rotation speeds N1 and N2 are higher than the operation time rotation speed N3.SELECTED DRAWING: Figure 6 |
