Virtual Bleed Off VBO

Energy-efficient excavator control

Mobile machines offer significant potential for better utilization of the energy used. In hydraulic excavators, the most commonly used construction machines, advanced hydraulic control systems offer substantial improvement in energy utilization.

With Virtual Bleed Off VBO the 2-circuit-Closed Center System also has the addition of the pressure sensors and controller. The pumps are electronically pressure regulated. In a Closed Center System optimal load sensitivity is achieved with overlaid speed control. No losses in open center and fine control (closed center) as well as integrated pressure cut-off for maximum system pressure and for the individual movements offer additional possibilities for optimizing energy consumption.