Power control system for hydraulic excavator, has controller which judges the temperature limits of engine and hydraulic system based on which boom and rotation control timings are set

摘要

Sensors (124,128) detects engine coolant temperature and hydraulic oil temperature respectively. Cooling fans (28,34) is provided to engine and hydraulic system respectively. A controller judges the temperature limits of engine and hydraulic system. Based on the judgment, boom control and rotation control timings are set.