Energy content of hydraulic fluid
generate the pressure p in a space V o a specific portion of the volume ΔV K must be added: (in a pump this process takes place continuously or at very short intervals in the individual displacement chambers)
Control with throttle
dynamic performance (up to a few hundred Hz for control with throttle using servo valves). Alternative: Pump control
Overlap in valves
supplies , in barrier functions and in speed and flow rate controls. Negative overlap is preferred in pump drives, while zero cut overlap is used for control and servo valves (e.g. in the case of position
Particle size
associated with metallic and non-metallic particles produced by wear such as chips from bearing or pump materials, debris from seals, paint particles and oxidation products, foreign particles entering the
Pressure-limiting valve
elements in a system. It is set to the nominal pressure and should always be placed in proximity to the pump and protected against unauthorised adjustment. As the pressure-limiting valves are always under pressure
Hydrostatic laws
are based on this law. As the hydraulic fluid must be transported from the place it is generated (pump) to the place the energy is given up (motor, cylinder ), other laws of hydrokinetics need to be taken
Hydraulic accumulator
energy (Figure H 25) . Tasks of an accumulator: Storing energy to cover peak needs or to support the pump delivery flow Damping of pulsations in the hydraulic system and weight compensation Compensation for