| 摘要 |
To provide a control system, which can realize a saving in energy and an improvement in the efficiency of work, for a construction machine having an engine, hydraulic pumps, pump regulators, a fuel injection system, hydraulic actuators, control valves including plural flow control valves, and control devices, a controller is constructed including an engine speed control for correcting an inputted reference target engine speed NRO to obtain a corrected target engine speed NROO, a pump absorption torque control for determining a target maximum pump absorption torque value TRO, and a first correcting system for correcting the corrected target engine speed NROO and the target maximum pump absorption torque value TRO into a new target engine speed NRO1 and a new target maximum pump absorption torque TR1, respectively, in accordance with a coolant temperature signal TH1 detected by a coolant temperature detector.
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