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Terminated in academic year 2012/2013

Hydraulic Elements and Systems

Type of study Doctoral
Language of instruction Czech
Code 338-0904/01
Abbreviation HPaS
Course title Hydraulic Elements and Systems
Credits 10
Coordinating department Department of Hydromechanics and Hydraulic Equipment
Course coordinator doc. Ing. Bohuslav Pavlok, CSc.

Subject syllabus

1st Hydrostatic transmitters

1.1 The distribution, basic parameters of transmitters
1.2 Energy balance, hydrostatic force transducers
1.3 Static characteristics of pumps, hydraulic motors
1.4 Dynamics of hydrostatic transducer
1.5 Construction converters
1.5.1. Rotary:
gear, screw, vane, radial piston, piston axial, eccentric
1.5.2. Swinging motors
1.5.3. Linear motors
6.1 Management hydrostatic transducer
1.6.1. Direct control of the geometric volume
1.6.2. Mechanical-hydraulic control at constant pressure, constant flow,
constant power. Load-Sensing Systems
1.6.3. Electrohydraulic control with proportional valves and servo valves
1.7 The course of passive resistance motors, stick-slip, minimal restrictions
Speed

2nd Control elements

1.2 Switchboards seat, plunger, valve. Built-in valves
2.2 One-way valves, controlled one-way valves, bilateral
hydraulic lock
3.2 Elements of flow control: Aperture, nozzles, flow control valves, butterfly
valves with two-way and three-way pressure weight, brake valves
4.2 Proportional valve
2.5 Servo
6.2 Components for pressure control: insurance, relief, weight loss, connection and
isolating valves. Controlled directly and indirectly controlled pressure valves

3rd Accessories hydraulic systems

1.3 Hydraulic accumulators
2.3 Filters and filtration of liquids
3.3 Seals in hydraulic systems
3.4 Tanks
3.5 Heaters, coolers
6.3 Management of liquid

4th The working fluid of hydraulic systems

1.4 Physical properties
2.4 Chemical properties
4.3 Ecological properties
4.4 Types of fluids used, the classification
5th Hydrostatic Systems

5.1 Control of the hydrostatic drive
5.1.1. Control speed (rpm) Engine: - volume control
- Control variable resistor
5.1.2. Control of power, torque
2.5 Energy-saving systems, hydrostatic
5.2.1. Energy-efficient sources of pressure
5.2.2. Load-sensing systems with an open center and closed center
5.2.3. Secondary control motors
5.2.4 Systems with energy recovery pressure
3.5 Hydrostatic systems with batteries
5.4 Hydrostatic systems with built-in valves
5.5 Hydrostatic systems with proportional valves
5.6 Compensation pressure load weights
7.5 Hydrostatic transmissions
5.8 Hydrostatic systems with two or more motors. Synchronous operation
motors
5.9 Servo-mechanisms

Literature

[1] EXNER, H. et al. Hydraulics, Basic Principles and Components. Würzburg, Germany: Bosch Rexroth AG., 2011. 326 p. ISBN 978-3-9814879-3-0 .
[2] EWALD, R. et al. Proportional and Servo-valve Technology. Lohr am Main, Germany: Bosch Rexroth AG, 2003. 300 p.
[3] GÖTZ, W. Hydraulics. Theory and Application. Ditzingen: Rexroth Bosch Group + OMEGON, 1998. 291 p. ISBN 0-7680-0242-7.
[4] NOACK, S. Hydraulics in Mobile Equipment. Ditzingen: Rexroth Bosch Group + OMEGON, 2001. 202 p. ISBN 0-7680-0886-7.

Advised literature

[1] IVANTYŠYN, J., IVANTYŠYNOVÁ. Hydrostatic pumps and motors: principles, design, performance, modelling, analysis, control and testing. New Delhi: Tech Books International. 2003. 512 p. ISBN 81-82305-08-1 .
[2] HEHN, H. et al. Fluid Power Troubleshooting. New York: Marcel Dekker. 1995. 647 p. ISBN 0-8247-9275-0.
[3] MANRING, N. D. Hydraulic Control Systems. John Wiley & Sons. 2005. 426 p. Online version available at:
https://app.knovel.com/web/toc.v/cid:kpHCS0000E/viewerType:toc
[4] CHOW, V. T. Open-channel hydraulics. Caldwell : Blackburn Press, 2007. 680 p. ISBN 978-1932846188.