Patent ID: 8668274

Claim:
A method for optimizing a cutting process in a milling machine for machining road coverings, the milling machine including a machine frame, one or more front ground engaging traveling mechanisms supporting the machine frame, one or more rear ground engaging traveling mechanisms supporting the machine frame, at least one of the ground engaging traveling mechanisms including a hydraulic drive, a milling device fitted with milling tools, the milling device being arranged between the front and rear ground engaging traveling mechanisms, a spray system arranged to spray cooling liquid on the milling tools, and an on board tank supported by the machine frame, the method comprising: (a) providing an on board supply of cooling liquid in the on board tank, the on board supply being carried by the machine frame; (b) machining a road covering with the milling device; (c) during step (b), spraying cooling liquid from the on board tank onto the milling device and thereby cooling the milling tools on the milling device; (d) during step (b), measuring a current hydraulic pressure of the hydraulic drive of the at least one ground engaging traveling mechanism; and (e) controlling an instantaneous flow rate of cooling liquid in step (c), in dependence upon the current hydraulic pressure measured in step (d), in order to adapt cooling liquid usage in step (c) to a variable cooling liquid amount actually necessary to cool the milling tools for an instantaneous power output corresponding to the current hydraulic pressure measured in step (d).