338-0954/02 – Hydraulic Components and Systems (HPaS)
| Gurantor department | Department of Hydromechanics and Hydraulic Equipment | Credits | 10 |
| Subject guarantor | doc. Dr. Ing. Lumír Hružík | Subject version guarantor | doc. Ing. Martin Vašina, Ph.D. |
| Study level | postgraduate | Requirement | Choice-compulsory type B |
| Year | | Semester | winter + summer |
| | Study language | English |
| Year of introduction | 2019/2020 | Year of cancellation | |
| Intended for the faculties | FS | Intended for study types | Doctoral |
Subject aims expressed by acquired skills and competences
Extension of knowledge of structure, properties, mathematical description of static and dynamic properties of hydraulic components. Learn the modern methods of analysis and synthesis of hydrostatic systems. Assume knowledge of control problematics of hydrostatic systems.
Teaching methods
Lectures
Individual consultations
Project work
Summary
The student will deepen its knowledge in the subject Hydraulic components and systems, i.e. knowledge of structure, functions, properties, energy balance, control manner and application of hydrostatic components, i.e. hydraulic pumps, hydraulic motors, control valves and accessories of hydraulic systems. He will obtain knowledge of working fluids of hydraulic systems. Based on the knowledge of hydraulic components, he will deal with analysis and synthesis of selected hydraulic systems, e.g. with hydrostatic systems with proportional control valves, accumulators, slip-in cartridge valves, energy saving systems etc. He will use modern methods of a mathematical description of dynamic behaviour of hydraulic components and systems, such as a description of transfer functions etc. He will use methods of mathematical simulation and computer simulation of dynamic systems during synthesis of hydraulic and electrohydraulic systems.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
Individual consultations and project processing. Oral exam.
E-learning
Other requirements
There are no additional requirements for students.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Hydrostatic pumps and motors
1.1 Types, basic parameters of hydrostatic pumps and motors
1.2 Energy balance, efficiencies of hydrostatic pumps and motors
1.3 Static characteristics of hydrostatic pumps and motors
1.4 Dynamics of hydrostatic pumps and motors
1.5 Construction of hydrostatic pumps and motors
1.5.1 Rotary: gear, screw, vane, radial piston, axial piston, orbital
1.5.2 Rotary actuators
1.5.3 Hydraulic cylinders
1.6 Control of hydrostatic pumps and motors
1.6.1 Direct displacement control of hydrostatic pumps and motors
1.6.2 Pumps mechanical-hydraulic control: constant pressure, constant flow,
constant power. Load-Sensing systems
1.6.3 Pumps electrohydraulic control with proportional valves and servo valves
1.7 Hydraulic motors passive resistances, stick-slip, limitation of minimum speed
2. Control valves
2.1 Directional seat and spool valves. Slip-in cartridge valves
2.2 Check valves, pilot operated check valves, double pilot operated check valves
2.3 Flow control valves: Orifices, nozzles, throttle valves, two-way and three-way flow control valves
2.4 Proportional directional control valves
2.5 Servo valves
2.6 Pressure control valves: pressure relief, pressure reducing, sequence and
unloading valves. Direct and pilot operated pressure valves
3. Accessories of hydraulic systems
3.1 Hydraulic accumulators
3.2 Filters and filtration of liquids
3.3 Seals in hydraulic systems
3.4 Tanks
3.5 Heaters, coolers
3.6 Hydraulic lines
4. Working fluids of hydraulic systems
4.1 Physical properties
4.2 Chemical properties
4.3 Ecological properties
4.4 Types of used hydraulic fluids, classification
5. Hydrostatic systems
5.1 Hydrostatic drive control
5.1.1 Speed control of hydraulic motor:
- variable displacement pump control
- valve control
5.1.2 Force and torque control
5.2 Energy saving hydrostatic systems
5.2.1 Energy saving hydraulic power unit
5.2.2 Open centre and closed centre Load-sensing systems
5.2.3 Secondary control of hydraulic motors
5.2.4 Systems with pressure energy recuperation
3.5 Hydrostatic systems with accumulators
5.4 Hydrostatic systems with slip-in cartridge valves
5.5 Hydrostatic systems with proportional directional control valves
5.6 Pressure compensation with two-way and three-way flow control valves
5.7 Hydrostatic transmissions
5.8 Hydrostatic systems with two and more hydraulic motors. Synchronous operation of hydraulic motors
5.9 Servomechanisms
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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