Actuation method for a hydraulic system having a pump and valves for supplying multiple consumers and a cooling and/or lubricating device, and hydraulic system

A method for controlling a hydraulic system for an actuation device and a cooling and/or lubricating device of a motor vehicle, wherein the hydraulic system has a pump, multiple actuation valves each arranged between a system rail connected to a pump outlet and at least one hydraulic consumer, as well as an additional valve arranged between the pump outlet and a coolant and/or lubricant supply line, wherein the pump is switched between a normal operation and an enhanced operation according to an existing total energy demand of the at least one hydraulic consumer, wherein, in normal operation, the pump is continuously driven, a pressure in the system rail is determined at regular time intervals, a target pressure of the system rail is calculated, and an upper pressure threshold and a lower pressure threshold are established on the basis of the target pressure, and the additional valve is closed when the system pressure is below the lower pressure threshold, and is opened when the system pressure is above the upper pressure threshold, and wherein, in the enhanced operation, the pump is continuously driven, the additional valve is continuously closed and each of the actuation valves is operated according to an individual energy demand of the respective hydraulic consumer after the system pressure achieves a threshold value.