Minutes
safe and uninterrupted transfer of information between functional groups of an EDVA in accordance with the required functions. Minutes contain specifications on the transfer code, error control, the message
Adjustment of displacement machines
adjustment : Here a distinction must be made between adjustments with and without an internal control circuit. The latter work only with a control over the entire subsystem (these are still predominant [...] is pressure-controlled or travel-controlled with or without a cam disc. Volume-controlled adjustment no longer plays a role; electro-hydraulic adjustment with proportional valve or servo valve . For hydraulic [...] which is necessary for controls and feedback controls. This is taken from an order in accordance with ( Figure V 22 ). The term "feedback controlling" is only correctly applied to adjustment processes
Calibrating throttles
Devices with a defined form and dimensions as per DIN 1952 and which are used to measure air flows. They may take the form of an orifice ( a ), nozzle ( b ) or Venturi nozzle ( c ) ( Figure N 5) .
Dynamic characteristics of continuously adjustable valves
adjustable valves that describe their . above all this is the: and/ or frequency response behaviour with amplitude response and phase-frequency response . Characteristic points of these functions are the
Gap filter
Filter consisting of a set of fine metal discs with a defined distance and which also determines the maximum filtration grade (Figure M 23). The gap filter is one of the surface filters , i.e. it has a
Instruction
Statement containing what is to be done with which data. There are computational instructions, control and transmission instructions, as well as instructions to the peripherals. They usually comprise addresses
Load pressure difference
or . It is referred to as positive if the inlet pressure is higher than the return line pressure. With synchronizing cylinders , the load pressure difference is equivalent to the load pressure p L.
Control computer
devices, Monitoring safety measures, Supervising the production process by measuring relevant variables with subsequent corrections, Diagnostics in the case of an error, amongst others
Displacement chamber machines
machines whereby the displacement units are generally pistons moved in a linear manner such as a pump with banked pistons/in-line piston pump , displacement chamber pump, axial piston machine , radial piston
Piston rings for sealing
The kind of piston ring associated with the combustion engine can also be found in mechanical engineering. As a piston seal installed in a hydraulic cylinder , it has the advantage of showing very little [...] has practically the same effect as a gap seal , i.e. it is never possible to achieve a complete seal with it — not least because of the inevitable impact involved. The seal effect can be improved, however