As part of the trend towards greater digitalization the number of sensors installed in mobile machinery is increasing each year. OEMs are consequently now capable of collecting large amounts of component measurement data, which they unfortunately do not have time to analyze or are not capable of interpreting. This is quite a pity, because when used in the right way such information can be used to develop a much better understanding of the machine and to develop new systems with lower fuel consumption and improved performance. The following paper introduces an approach used at Linde Hydraulics to analyse and assess large amounts of data with the goal of systematically identifying potential and designing new and improved hydraulic Systems.

This paper presents the experimental assessment of the very first prototype of Meter Out Sensing System architecture. The system, based on the proportional control of meter out valves, is a novel hydraulic architecture in the field of Mobile Machines. The objective of the hydraulic control is obtained firstly by a negative control of the supply system, adjusting the pressure drop on the meter out to a given value, secondly by a three way compensator able to regenerate the flow. The energy saving is then obtained because of lower throttle losses on meter in connection and the regeneration feature that is enabled hydraulically under specific operating condition.

Rocking is often observed in wheeled excavators while digging, which impacts driver comfort and precision. To
minimize rocking, wheeled excavators need special axles with brakes at the wheel-end. The paper presents a new
solution to use low cost in-board brakes achieving the same or better stability compared to wheel brakes. This is
achieved by disconnecting one axle and braking it, while torque is actively applied on the other axle with a
hydrostatic traction motor, to preload the driveline and keep the vehicle more stable. The system hydraulic
circuit and the corresponding control algorithms are presented, as well as experimental results that prove the
concept feasibility.

The paper is about to show a comprehensive evaluation of energy efficiency in the field of excavating
machinery. The results detected with 21t excavator platforms over years deal as a basis to determine the major
energy efficiency influencers in and outside the machine. Cycles are given for a state of the art hydraulic system
in Asian markets. The measurement data collected and results provided finally lead into an ABC-analysis to
show the urgent need for new approaches to really save energy in future construction processes.