| 摘要 |
PROBLEM TO BE SOLVED: To cool an electric apparatus having a required cooling temperature lower than that of a hydraulic apparatus with the usage of pressure oil for an actuator.SOLUTION: A hydraulic circuit HC of a hybrid working vehicle includes a driving system HC1 for operating a hydraulic actuator, and a cooling system HC2 diverted from the driving system to cool a travel electric device 100E, and a first oil cooler 215 for cooling the pressure oil used to drive the hydraulic actuator to a first temperature is provided in the driving system HC1, and a second oil cooler 313 for cooling the pressure oil to a second temperature lower than the first temperature is provided in the cooling system HC2 diverted from the downstream of the first oil cooler 215. |
