In some intervals during the cycle, the load condition combined with the flow rate requests make it impossible to obtain a significant reduction in power request in the new architectures compared with the traditional system. For example, in the range 17- 21 seconds, when the tractor is loading the bucket, the pump is under pressure saturation condition and there is no possibility of saving energy in this condition. Furthermore, in this particular duty cycle regeneration plays a minor role because it is only possible for very brief time intervals. Nevertheless, a reduction in the power required to operate the loader characterizes all the other phases of the duty cycle, with relative energy savings from the alternative architectures compared with the traditional load sensing system: