Hakuteksti "*".

Feature on hydraulic pumps of piston and vane design on which the delivery flow follows an arbitrary defined setpoint in accordance with a reference variable s by regulating out the disturbance variab

Filter element , which is replaced by a new element after a certain operating time or at a given flow resistance. The contaminated filter element must be disposed of in an environmentally-friendly man

Influencing a prescribed setpoint to improve the pilot control behaviour in . Example: Measures to limit the acceleration of a system or attach a preliminary filter.

All measures which a manufacturer of hydraulic pumps can take to keep the amount of noise generated as low as possible. Alternative: secondary noise reduction measures

Energy stored in a pressure fluid compressed at the pressure p. The storage of energy within a volume of gas or fluid as a result of pressure is comparable to the storage of energy when a mechanical s

Feature on hydraulic pumps of piston and vane design that changes the delivery flow in accordance with an input variable. On the pump this is a distance s that can be specified in various ways (Figure

For the control movements of a pilot-controlled valve the necessary pressure fluid is drawn from the same circuit. For this reason a separate control oil circuit is not necessary. As a rule, however,

Orifices have different tendencies to accumulate contaminations in the pressure fluid . This changes the flow characteristics, and the orifice may become completely clogged under certain circumstances

The pressure loss Δp in a laminar (Re < 2300) flow, straight pipe is calculated from the length lp and the diameter dp of the line as well as from the density ρ and the speed of the fluid vf. Calculat

Hydraulic pump — mostly with a single piston — for manual operation. It is single-acting in most cases, i.e. priming occurs during the first section of the cycle and delivery during the second. With d