Abstract: The invention relates to a method for controlling the driving engine (M) and hydraulic pumps (PUMP1, PUMP2) of a hydraulic machine (10), the method comprising: —driving at least one hydraulic variable displacement pump (PUMP1, PUMP2) that supplies pressurized medium to the hydraulic system of the machine by the driving engine (M), —determining the working pressure pi, p2) and volume flow (Qip, Q2p) output from at least one hydraulic pump (PUMP1, PUMP2), —determining the torque (T-ip, T2p) required of at least one hydraulic pump (PUMP1, PUMP2) or the total torque (Tpk0k) required by two or more hydrau¬lic pumps (PUMP1, PUMP2) by means of the working pressure (p-i, p2) and volume flow (Qip, Q2p) of pressurized medium output from at least one hydraulic pump (PUMP1, PUMP2), as well as the rotation speed (i) of the driving engine (M); —controlling the rotation speed (i) of the driving engine (M) and the dis¬placement (V1p, V2p) of at least one hydraulic pump (PUMP1, PUMP2) auto¬matically so that the torque (Td, Td

Abstract: A method for optimizing the driving of a pile into the ground by a pile-driving machine using a hammer ram; moving a block for driving the pile towards the end of the pile with an impact energy (Wkin); determining a kinetic variable (Q1) of the impact, proportional to the kinetic energy of the block, when the block is moving towards the pile in the pile driving direction; determining the value of a kinetic variable (Q3) of the return motion, proportional to the kinetic energy of the block, when returning, after an impact on the pile, in a direction opposite to the pile driving direction; calculating a kinetic variable ratio (Q1/Q3); comparing (Q1/Q3) with a predetermined target value (Q1/Q3tav) for (Q1/Q3), producing the shortest possible total pile driving time (ttot); adjusting the impact energy (Wkin) of the next impact so (Q1/Q3) of the next impact is changed towards (Q1/Q3tav).