| 摘要 |
A pressurized-oil supply amount control device for a vehicle-mounted crane, the device having a dual pump system and capable of further reducing engine noise and improving fuel consumption. A controller (2) for the pressurized-oil supply amount control device has set in it a predetermined control function where three regions (R1, R2, R2) are set according to the rates of operation signal inputs. Based on the predetermined control function, the flow rate of pressurized oil is controlled according to the speed of an engine (6) by a flow rate control valve (5). As a result, the total flow rate (G) of pressurized oil supplied to a control valve (3) is increased in proportion to the rate of an operation signal input to the crane. ® KIPO & WIPO 2009
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