Objet de la recherche «with».

in between the two Figure V 33 ). If the prescribed temperature cannot be reached with normal mineral oil, an oil with a viscosity improver must be provided ( HV oils ) or it must be pre-heated or cooled

hydraulic energy from the location of generation (pump) to the location of conversion ( cylinder , motor) with the minimum possible losses. They are also used to reduce the wear of parts that slide against each [...] it flows through the system, the hydraulic fluid conducts away the locally occurring heat and takes with it contamination, which is caused by debris, for example. For this task, mineral oils and flame-resistant

Actuation of a fluid-based device by a solenoid with a stroke that is transferred directly to the device and triggers there an actuation (e.g. switching directional valve ) (Figure E 24) . In this way [...] valves are generally only actuated directly by solenoids up to a nominal size 10 (Figure E 24 b) . With DC solenoids it is possible to shorten the switching time by means of fast excitation or over-excitation

closed loop position control system associated with machine tools, for example, and incorporates the loop gain . As such, it indicates the velocity with which a given position error is reduced to zero:

in which one output is connected to the input of the next element. In the case of series circuits with resistors in the same way as the electrical engineering, the individual resistances are added together [...] to the overall resistance ( Figure R 25 ). Therefore, for example, the required pressure increases with the length of the line and the number of valves passed through. In the case of series sub-circuits

orifice , throttle ) are used to control the movement of hydraulic motors and cylinders ( control with throttle ), this is based on the principle of connecting pressure dividers (similar to electrical [...] the output. These circuit arrangements are referred to as hydraulic half bridges by way of analogy with the electrical half bridge. In order to control each displacement chamber of an actuator , a single

measured value — and therefore each measurement result — is influenced by any imperfections associated with measuring instruments and measuring devices , the measuring procedure and the measured object; there [...] there are also influences from the environment and the observer whereby time differences associated with these influences play a part too ( Figure M 16 ). A distinction is made between random and systematic

( hydropneumatic accumulator ). With a hydraulic accumulator, the following characteristics are significant: Precharge pressure : Pressure required, during filling with gas, in order to achieve the final [...] latter is the only accumulator which keeps the pressure constant during withdrawal of the volume. With hydropneumatic accumulators and spring accumulators by contrast, the fluid pressure decreases - due [...] be, the accident prevention provisions set out in UVV 17 "Hydraulic accumulators" must be complied with when using hydraulic accumulators!

on number is seen as a good indicator (in terms of a measure) for the degree of ageing associated with a hydraulic fluid .

the outlet (to approx. 5 bar min.). Example: A valve pilot-controlled by a directly controlled valve with internal pressure tap.