The article presents a brief overview of new electric-hydraulic systems of three selected earthmoving machines developed by means of mathematical modeling and simulation. These machines were as follows: a road tire roller, an excavator and a wheel loader. Their common feature was that a special innovative system was developed for each of them by Bosch Rexroth company (Brno) in cooperation with BUT (Brno University of Technology) using mathematical modeling of hydraulic, mechanical and electrical processes in the machines. Each of these machines represents an innovation: a module for the recovery of kinetic ("braking") energy was developed for the road roller, and an emission-free electric battery drive for the excavator and the loader as a replacement for the diesel engine drive.
Science Journal 