Hakuteksti "P - R2 - 1 - 1/4 - AT".

resistance (load, friction) to overcome starts the movement ( Figure P 2 ). The next actuator only follows suit when the pressure at this point increases. [...] flow rate in the individual branches is divided up in inverse proportion to the resistance ( Figure P 1 ). The arrangement of devices in a parallel circuit, also referred to as redundancy, improves reliability

transmission that is given by the max. flow rate and the max. pressure (Figure E 1) : P E = Q max · p max = M 2 · 2πn 2. On constant pumps and variable pumps with pressure controller the corner power is

ely periodically around pN as the average pressure. The swing p S of the pulsation is <0.5 p N . Calculation: static against deformation and overload fracture with p A = 1.25 p N ; dynamic against endurance [...] operating pressure is less than or equal to the nominal pressure p N . Superimposed pressure fluctuations do not exceed p N and are smaller than 0.3 p N (Figure B 6) . Pressure pulsation around an average : During [...] endurance fracture with an oscillation amplitude = p S /2 around the average p N (Figure B 7) . Swelling pressure with added pressure fluctuations : Approximately constant pulsation width; superimposed pressure

variable rotation speed, the torque M 1 will be kept constant the same way by V 1 adjusting itself to the changing pressure. If more than one pump is being used at a combustion engine, pure power limiting [...] drive with constant rotation speed (e.g. electric motor), restricts the power P as a product of the flow rate Q and pressure p to a maximum value, so the power drawn cannot exceed the drive power installed [...] pressure controller for a variable pump), something referred to as pressure limitation . As the pressure p 11 increases, the displacement volume V 11 and therefore the flow rate Q 11 are reduced in accordance

energy released during this process can be significant. Example: ΔV k = 1.0 L; p = 300 bar; compression energy: 15 · 103 Nm. If this 1 L flows away in 0.5 s, a power of approx. 30 kW is released. [...] compression energy . To 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

channel per unit of time (DIN 19 226 Part 5). At a cycle frequency of 1 kHz, in the case of series data transmission, this results in a transfer of 1,000 Bit/s or 1,000 baud.

outlet pressure): Q = f (p) under stated test conditions. temperature-controlled : Range between the minimum and maximum flow rate as a factor of the temperature of the hydraulic fluid at a constant pressure [...] pressure difference: Q = f ( t , p = const.) under stated test conditions.

the entire sound power W emitted from an acoustic radiator in relation to a specific output W o of 1 pW. The sound power level is therefore a machine-specific variable, which is used by machine operators

the direction of rotation changes (2nd and 3rd quadrant) or the direction of rotation remains the same with a changing direction of torque (driving and braking, 3rd and 4th quadrant). Example: hydraulic pump [...] Single quadrant operation of a drive occurs if the direction of rotation and the torque are the same (1st quadrant). On hydrostatic displacement machines this situation represents normal pump/motor operation

Hydraulic motors which permit at least 1,000 min--1 as the upper rotation speed limit, with the lowest rotation speed determined by the hydraulic-mechanical efficiency factor. In the case of uncontrolled [...] uncontrolled motors, it is between 500 min--1 for gear motors and 50 to 100 min--1 in the case of piston motors. It remains identical with hydraulic pumps of the same construction type (gear, vane , piston machines