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Terminated in academic year 2020/2021

Fluid Mechanisms of Machines

Type of study Bachelor
Language of instruction Czech
Code 338-0316/01
Abbreviation TMS
Course title Fluid Mechanisms of Machines
Credits 3
Coordinating department Department of Hydromechanics and Hydraulic Equipment
Course coordinator doc. Ing. Martin Vašina, Ph.D.

Subject syllabus

The program of lectures

Week Contents of lectures

1 Basic terms. Hydraulic circuit: structure, function, diagrams. Basic hydraulic circuits.
2 Basic theory of the hydraulic circuits theory.
3 Liquid theory of hydraulic circuits.
4 Pumps and motors.
5 Distribution and control elements.
6 Proportional technology and servo technology.
7 Hydraulic drives of maschines: structure, control options, static characteristics, start-up drive. Application in construction, earthmoving, manufacturing, etc. machines.
8 Pneumatic drives and pneumatic control systems of machines.
9 Principles of operation, maintenance and diagnostics of hydraulic and pneumatic mechanisms.

Program of exercises and seminars + individual students' work

Week Contents of exercises and seminars

1 Review of Fluid Mechanics.
2 Graphic symbols of the elements.
3 Scheme of hydraulic circuits. TEST 1: Graphic symbols of the elements. Student can receive up to 10 points per test.
4 Calculation of the hydraulic circuit in the steady state.
5 Calculation of pressure and flow losses: Program No. 1: Calculation of pressure losses in the circuit. Student can receive up to 10 points per program.
6 Program No. 2: Measurement of P-Q characteristics of the pump. Student can receive up to 7 points per program. Program No. 3: Measurement of the valve characteristics. Student can receive up to 7 points per program.
7 Starting of the drive.
8 Structures of pneumatic circuits - exercises on training equipments.
9 Credits

List of questions to examination

1 Calculation of pressure losses in the circuit.
2 Liquids in hydraulic circuits: the properties.
3 Liquids in hydraulic circuits: types of liquids, use.
4 Hydraulic gear pumps, vane pumps.
5 Radial piston pumps, axial piston pumps.
6 Low speed motors.
7 Control of hydrostatic transducers. Regulation on constant-pressure and constant performance.
8 Linear motors. Seal of motors.
9 Distributors.
10 One-way valves, controlled one-way valves, hydraulic lock.
11 Butterfly valves.
12 Pressure valves.
13 Hydraulic accumulators.
14 Proportional technology.
15 Servo technology.
16 Filters and filtration.
17 Hydraulic drives of machines. Structure, control, static characteristics.
18 Pneumatic circuits: sources, treatment and distribution of compressed air.
19 Pneumatic circuits: control of motors, control systems.
20 Starting of the drive.

Literature

[1] EXNER, H. et al. Basic Principles and Components of Fluid Technology. Lohr am Main, Germany: Rexroth AG., 1991. 344 p. ISBN 3-8023-0266-4 .
[2] GÖTZ, W. Hydraulics. Theory and Applications. Ditzingen, Germany: OMEGON, 1998. 291 s. ISBN 3-980-5925-3-7.

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.