The reservoir enables the performance of a hydraulic system to be optimized. For example, it can be utilized as an energy reservoir and for the absorbance of pressure surges or flow fluctuations. Reservoirs are capable of absorbing a defined volume of fluid under pressure and releasing it again with minimal losses. The construction consists essentially of a pressure resistant container, generally a gas charge of nitrogen and a separator e.g. a piston, a membrane or a bubble elastomer.
Hydraulic fluid only starts to flow into the reservoir when the fluid pressure is greater than the gas-preload pressure.
|Volume||0.01 ... 100 l||0.32|
|Pre-load pressure||0 ... 40 MPa||1|
|Polytropic exponent||0.5 ... 3||1.4|