| Course Unit Code | 338-0502/02 |
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| Number of ECTS Credits Allocated | 5 ECTS credits |
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| Type of Course Unit * | Compulsory |
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| Level of Course Unit * | Second Cycle |
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| Year of Study * | First Year |
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| Semester when the Course Unit is delivered | Winter Semester |
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| Mode of Delivery | Face-to-face |
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| Language of Instruction | Czech |
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| Prerequisites and Co-Requisites | There are no prerequisites or co-requisites for this course unit |
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| Name of Lecturer(s) | Personal ID | Name |
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| HRU38 | doc. Dr. Ing. Lumír Hružík |
| STO76 | Ing. Erik Stonawski, Ph.D. |
| VAS024 | doc. Ing. Martin Vašina, Ph.D. |
| BUR262 | Ing. Adam Bureček, Ph.D. |
| Summary |
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In the course Hydraulic components and systems, students will learn the function, construction, parameters, characteristics, calculation and use of hydraulic components, the basic of hydrostatic systems theory and the basic types of hydraulic circuits.
In exercises, students practice hydraulic components marks, measure static characteristics of hydraulic components and practice the basics of hydraulic systems theory.
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| Learning Outcomes of the Course Unit |
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Students will gain detailed knowledge of the functions, construction, calculation, properties, and use of hydraulic components. They are able to use these components in hydraulic systems.
They will extend their knowledge in the area of design and calculation of selected hydraulic circuits and systems, especially in terms of their control, energy balance, operation, and maintenance, reliability, etc.
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| Course Contents |
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Contents of lectures
1. Working fluids of hydraulic systems: physical properties, chemical properties, types of working fluids and their applications.
2. Pumps – gear, vane, and screw: basic theory, construction, characteristics, applications.
3. Pumps – piston: basic theory, construction, characteristics, applications.
4. Control and regulation of the pumps geometric volume. Rotary hydraulic motors. Hydraulic power units.
5. Hydraulic cylinders and hydraulic rotary actuators: construction, characteristics, efficiency, applications. Seals in hydraulic systems. Hydraulic pressure intensifiers.
6. Check valves, controlled check valves, double-sided hydraulic lock, direct operated and pilot operated directional valves, shut-off valves: construction, characteristics, applications.
7. Flow control valves: construction, characteristics, applications.
8. Pressure control valves: construction, characteristics, applications. Logical slip-in cartridge valves.
9. Proportional directional control valves, proportional pressure control valves: construction, characteristics, applications. Servo valves.
10. Hydraulic accumulators and their application in hydraulic systems.
11. Control of hydrostatic drives: valve, volumetric. Hydrostatic transmission.
12. Hydraulic systems with two or more hydraulic motors. Synchronous operation of hydraulic motors. Hydraulic systems for handling loads.
13. Energy-saving systems. Filters and filtration. Pipes, hoses, tanks, heaters, coolers.
14. Thermal calculation of hydraulic system. Cooler design. Fundamentals of hydraulic systems dynamics.
Content of exercises and seminars
1. Repetition of hydrostatics. Pressure in liquid. Pressure losses. Flow
losses. Calculation of permeability G = 1 / R.
2. Analysis of the ideal hydraulic system in the steady-state.
3. Calculation of real hydraulic system parameters in steady-state.
4. R-resistances. Hydraulic systems with R - resistances.
Program No. 1: Calculation of simple hydraulic system parameters in steady-state. Students can earn up to 10 points for this program.
5. Calculation of parameters of hydraulic systems with throttle valves.
Program No. 2: Calculation of parameters of the multi-motor hydraulic system controlled by throttle valves. Students can earn up to 14 points for this program.
6. Thermal calculation of hydraulic system. Design and calculation of cooler parameters.
7. Acceleration and braking of the drive.
8. Stiffness of the hydraulic motor. Natural oscillations in the system.
9. Excursion to the industrial operation or testing lab.
10. Design and calculation of the hydraulic cylinder. Calculation of seal friction.
11. Design of hydraulic system with a proportional directional valve.
12. Calculation of the hydraulic system with accumulator.
13. Design and calculation of accumulator. Credit test. Students can earn up to 8 points for this test.
14. Credit.
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| Recommended or Required Reading |
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| Required Reading: |
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[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. |
[1] PAVLOK, B. Hydraulické prvky a systémy. Díl 1. Ostrava: VŠB-TU Ostrava, 2013. 156 s. ISBN 978-80-248-2983-8.
[2] PAVLOK, B. Hydraulické prvky a systémy. Díl 2. Ostrava: VŠB-TU Ostrava, 2008. 150 s. ISBN 978-80-248-1827-6.
[3] BAROŠKA, J. Hydrostatické mechanizmy. Žilina: Hydropneutech, s.r.o., 2012. 388 s. ISBN 978-80-970 897-2-6. |
| Recommended Reading: |
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[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. |
[1] Rexroth, Bosch Group. Fluidní technika. Průmyslová hydraulika. Základy. Brno: Bosch Rexroth, spol. s r. o., 2012. 260 s.
[2] EXNER, H. et al. Hydraulics, Basic Principles and Components. Würzburg, Germany: Bosch Rexroth AG., 2011. 326 p. ISBN 978-3-9814879-3-0.
[3] MURRENHOFF, H. Fundamentals of Fluid Power: Part 1 Hydraulics. Shaker Verlag GmbH, Germany, 2016. 388 p. ISBN 978-3844048179.
[4] MURRENHOFF, H., ECKSTEIN, L. Fluidtechnik für mobile Anwendungen. Shaker Verlag GmbH, Germany, 2014. 347 p. ISBN 978-3844029192. |
| Planned learning activities and teaching methods |
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| Lectures, Tutorials, Experimental work in labs |
| Assesment methods and criteria |
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| Task Title | Task Type | Maximum Number of Points
(Act. for Subtasks) | Minimum Number of Points for Task Passing |
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| Exercises evaluation and Examination | Credit and Examination | 100 (100) | 51 |
| Exercises evaluation | Credit | 32 | 20 |
| Examination | Examination | 68 | 25 |