Objet de la recherche «fluides».

be taken into account, such as: Nature of the pressure fluid and its viscosity , Maximum flow rate , Required cleanliness level of the pressure fluid ( filtration grade ), Intended temperature range, On

or frequency conversion, while on fluid-based systems a pump or a compressor is required. The drive element in electrical systems is the electric motor, and in fluid technology the cylinder or the motor

to give the water lubricity and corrosion protection. They usually make up 2 to 5% of a hydraulic fluid. A distinction is made between three groups: Emulsions : Concentrates based on mineral oil containing [...] Microemulsions : New type of concentrate made from a mixture of mineral oil components and synthetic fluids. Characteristics are still largely unknown.

Equation defined by Daniel Bernoulli (1700—1782) in 1738 for the steady-state flow of incompressible fluids and gasses free of friction. Bernoulli’s equation is a fundamental law derived from the principle [...] between the velocity v, the pressure p and the geodetic height h in a flow. The energy of a flowing fluid: Etotal = E pot + E kin + E p = const. Potential energy = E pot = Δm · g · h Bernoulli’s equation

depends on the rotation speed of the pump, the intake cross-section and the viscosity of the hydraulic fluid. The higher the rotation speed and the viscosity become, the worse the intake characteristic. If the [...] the intake characteristic is inadequate such that cavitation occurs, either the hydraulic fluid must be fed to the pump (pump under the tank) or it must be supplied with pressure (charge pump)

Valve that can shut-off the flow in both directions. In fluid technology this valve is implemented in the form of a seated valve or ball valve . The valve is actuated manually, magnetically or using a

Control system on which the operating position is separate from the fluid technology systems such that the operating elements need to be operated over a greater distance. Operation can be using both hydraulic

standards institutes whose technical committee TC 131 works on all standardisation tasks associated with fluid technology. The resulting ISO standards are either adopted directly (DIN ISO ...) or incorporated

Non-contact seal from the group of labyrinth gap seals on which fluid flowing outward is pumped back by a counter-rotating thread on the shaft. Here a pointed, triangular thread has proven effective (Figure

Material removal that occurs in hydraulic devices at the points where the hydraulic fluid impacts at high speed. Erosion wear comprises cavitation erosion and particle jet erosion and is material dependent