Flow rate control apparatus for oil-hydraulic pump

Power plants – Pressure fluid source and motor – Condition responsive control of or by input to input pump...

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60452, 91518, 417 34, F16D 3102

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active

053035518

ABSTRACT:
The present invention relates to a flow rate control apparatus for a hydraulic pump which is employed suitably in a hydraulic excavator or a hydraulic crane and driven by a rotating force of a motor. The flow rate control apparatus controls the discharging flow rate of the hydraulic pump to utilize the output power of the motor without an overload applied to the motor, and optimally controls the output flow rate of the pump depending upon an operation signal to provide an excellent operating characteristic to an operator under a high load operating condition applied to a hydraulic machine having hydraulic actuators driven on the basis of the discharge flow of the hydraulic pump.

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