Skip to main content
Skip header
Terminated in academic year 2020/2021

Fluid Mechanisms

Type of study Bachelor
Language of instruction Czech
Code 338-0302/04
Abbreviation TMech
Course title Fluid Mechanisms
Credits 5
Coordinating department Department of Hydromechanics and Hydraulic Equipment
Course coordinator doc. Ing. Marian Bojko, Ph.D.

Subject syllabus

Week Lectures

1. Fluid mechanism, fluid power, fluid circuit. Hydraulic and pneumatic circuit: structure, graphics symbols of elements, circuit scheme. Basic hydraulic and pneumatic circuits.
2. Hydraulic fluids: properties, types and applications. Compressed air and its properties.
3. Pressure energy sources - pumps: structure, function, parameters, characteristics, control.
4. Hydraulic motors: structure, function, parameters. Hydraulic cylinder, seals.
5 Compressors and pneumatic motors.
6. Directional control valves. Check valves. Flow conrol valves. Pressure control valves.
7. Flow control valves.
8. Pressure control valves.
9. Proportional control technology, application of proportional control technology.
10. Introduction to servo technology, servo technology applications.
11 Accessories of hydraulic and pneumatic circuits: accumulators, filters, pipes, hoses, tanks, coolers, etc.
12. Hydraulic drive: power structure, steady-state drive, acceleration and braking operation.
13. Control of hydraulic drive: ventil control, volume control. Hydrostatic transmission.
14 Basic operation and service of hydraulic and pneumatic systems. Fault diagnosis, fault prevention. Proactive service.


Week Filling of exercises and seminars

1. Fluid mechanism: applications. Video film.
2. Graphic symbols of the elements.
3. Project of graphical symbols of elements, synthesis of simple hydraulic circuits.
4. Basic hydraulic circuits: demonstration on the trainer. TEST number 1: Graphic symbols of the elements. Basic relationship from fluid mechanics. The test may receive up to 10 points.
5. Hydraulic fluids: examples on the viscosity and compressibility. Hydrostatic converters: examples of the basic relationships between the parameters hydrostatic converters. Efficiency.
6. Project No. 1. Design of a hydraulic circuit including the specification elements. The project can receive up to 10 points.
7. Calculation of parameters of the hydraulic circuit in the steady state with efficiency. Exercise No. 1: Measurement p-Q pump characteristics. Determination of the flow efficiency. The project can receive up to 5 points. Demonstration of a geometric control volume pump.
8. Hydraulic cylinder: practice the basic relations. Design of hydraulic cylinder. Seals of hydraulic cylinder.
9. Acceleration and braking of the hydraulic motor with load.
10. Control the hydro motor by control valves. Design, calculation. Demonstration of the trainer. Measurement of characteristics of the throttle valve.
11. Hydraulic calculation of pipe: friction pressure loss in piping and hoses. Pressure losses in piping and their local measurements. Measurement p-Q characteristics of hydraulic components.
12. Proposal hydrostatic transmission.
13. Project No. 2. Composition of pneumatic circuits - use of trainer. Task 4: To meet the job can receive up to 10 points.
14. Design and calculation of accumulator. Credit.

Questions to exam

1. Hydraulic fluids: physical properties, lubrication ability, chemical properties.
2. Hydraulic fluids: mineral oil, hardly inflammable liquids, organic liquids.
3. Hydrostatic converters: definition, characteristic parameters efficiency, static characteristics.
4. Hydrostatic converters: gear, vane, screw.
5. Hydrostatic radial and axial piston converters.
6. Control of the geometric volume of hydrostatic converters. Control on the constant pressure and constant power.
7. Linear hydro motors: design, calculation, production technology.
8. Angle rotary motors. Hydraulic power units. Multipliers of pressure.
9. Seal in hydraulics.
10. Directional control valves.
11. Check valves.
12. Throttle-valves. Flow control valves.
13. Pressure control valves.
14. Hydraulic accumulators and their use in circuits.
15. Proportional technology.
16. Servo technology.
17. Filters and filtration technology.
18. Pipes, hoses, fittings. Calculation of pressure losses in piping and fittings.
19. Hydraulic drive: structure of drive, steady-state drive.
20. Acceleration and braking of drive.
21. Hydraulic circuits open and closed.
22. Valve control of hydraulic drive.
23. Volume control of drive. Hydrostatic converters.
24. Pneumatic drives: sources, distribution and compressed air.
25. Pneumatic motor: structure, characteristics, control.
26. Thermal calculation of the hydraulic circuit.

E-learning

MC - eLEARNING. available from http://smctraining.mrooms.net/ (username and password will be assigned by teacher, Pneumatic Systems module, Hydraulics module)

Literature

[1] FOJTÁŠEK, K., HRUŽÍK, L., BUREČEK, A., STONAWSKI, E., DVOŘÁK, L., VAŠINA, M.: Fluid Mechanisms - Hydraulic Mechanisms, VŠB-TU Ostrava, 2022, 227 s. Available at: https://www.fs.vsb.cz/338/cs/studium/skripta/
[2] FOJTÁŠEK, K., HRUŽÍK, L., DVOŘÁK, L, BUREČEK, A., STONAWSKI, E., VAŠINA, M.: Fluid Mechanisms - Practical Tasks and Basics of Pneumatics, VŠB-TU Ostrava, 2022, 167 s. Available at: https://www.fs.vsb.cz/338/cs/studium/skripta/
[3] EXNER, H. et al. Hydraulics, Basic Principles and Components. Würzburg, Germany: Bosch Rexroth AG., 2011. 326 p. ISBN 978-3-9814879-3-0 .
[4] GÖTZ, W. Hydraulics. Theory and Applications. Ditzingen, Germany: OMEGON, 1998. 291 s. ISBN 3-980-5925-3-7.
[5] DODDANNAVAR, RAVI BARNARD, ANDRIES. (2005). Practical Hydraulic Systems - Operation and Troubleshooting for Engineers and Technicians. Elsevier. Online version available at:
https://app.knovel.com/web/toc.v/cid:kpPHSOTET2/viewerType:toc

Advised literature

[1] EWALD, R. et al. Proportional and Servo-valve Technology. Lohr am Main, Germany: Bosch Rexroth AG, 2003. 300 p.
[2] HEHN, H. et al. Fluid Power Troubleshooting. New York : Marcel Dekker. 1995. 647 p. ISBN 0-8247-9275-0.
[3] MANRING. (2005). Hydraulic Control Systems. John Wiley & Sons. Online version available at:
https://app.knovel.com/web/toc.v/cid:kpHCS0000E/viewerType:toc
SMC - eLEARNING. available from https://digital.smctraining.com/?lang=cs (username and password will be assigned by teacher, Pneumatic Systems module, Hydraulics module)
Another study support - https://www.fs.vsb.cz/338/cs/studium/studijni-opory/