Method for controlling flow rate of attachment for construction equipment

A method of controlling a flow rate of an attachment for construction equipment in which an engine and a pump are connected to a control device to which various control information according to equipment characteristics, user setting information from an instrument panel, engine rpm adjustment information through an engine control dial, or the like is inputted, and an attachment, which performs specific work using working oil supplied from the pump, is connected, the method comprising:

• selecting an optimum engine rpm corresponding to the attachment connected to the construction equipment;
• seleting a maximum flow rate to be used in the attachment;
• comparing the selected maximum flow rate with a maximum pump flow rate dischargeable by the pump at a preset engine rpm;
• and
• resetting the flow rate of the attachment by resetting the engine rpm when the selected maximum flow rate is higher than the maximum pump flow rate in the comparing.