338-0519/04 – Drives and Gears (PohPř)
| Gurantor department | Department of Hydromechanics and Hydraulic Equipment | Credits | 4 |
| Subject guarantor | doc. Dr. Ing. Lumír Hružík | Subject version guarantor | doc. Dr. Ing. Lumír Hružík |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2013/2014 | Year of cancellation | |
| Intended for the faculties | FS | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
There are given the fundamentals of kinematics and dynamics of drive and energy-thermal balance of energy transfer in the subject. There are named the properties, characteristics and controls of combustion engines, electric motors, pneumatic motors, hydraulic motors and pneumatic motors. The theory, characteristics, construction and use of mechanical gears, hydrostatic and hydrodynamic gears (connectors and converters) are discussed. Further, the combined gears are examined. The subject also deals with multi-motor drives and choice the drive and gear for various machines and technological equipment.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Other activities
Summary
Students will acquaint with the fundamentals of dynamics and kinematics of the drive. They will acquaint with energy - thermal balance of energy transfer. They will acquaint with the characteristics of different types of motors (electric motors, combustion engines, hydro-motors, pneumatic motors) and gears (mechanical, hydrostatic, hydrodynamic, combined). They will be able to choose the suitable combination of motor and gear at the drive design.
Compulsory literature:
Recommended literature:
GÖTZ, W. Hydraulics. Theory and Applications. Ditzingen, Germany: OMEGON, 1998. 291 s. ISBN 3-980-5925-3-7.
DE, N.K., SEN, P.K. Electric Drives. Applications and Control. Eastern Economy Edition, 2006. 324 p. ISBN: 978-81-203-1492-4.
Way of continuous check of knowledge in the course of semester
students prepare 3 protocols, control test.
E-learning
Other requirements
List of questions to eqamination
No. Wording of the question
1 Purpose of the drive, the distribution, composition and management. Types of engines and transmission mechanisms.
2 Drives starting procedures, basic relations, confrontation.
3 The fundamental equation for power and torque reduction. Working modes of drives.
4 Allocation of machines according to the nature of the burden, equiv. moment.
5 Power dissipation, an equivalent value. The thermal energy equation.
6 The course of warming and cooling. Calculation of cooling.
7 DC motors, characteristics, speed control, braking. Applications.
8 AC motors, characteristics, speed control, braking. Applications.
9 Internal combustion piston engines, characteristics, parameters. Increasing the power piston internal combustion engines, control, use.
10 Combustion turbines, characteristics, regulation, use.
11 Hydraulic motors, distribution, characteristics, advantages and disadvantages of use. Low speed hydraulic motor.
12 Basic characteristics of motors, control output parameters.
13 Hydraulic braking, the field of use.
14 Pneumatic motors, characteristics, advantages and disadvantages, working parameters, control, use.
15 Mechanical transmission, distribution and parameters. Harmonic transmission.
16 Speed chart, losses and efficiency.
17 Hydrostatic transmission, distribution, speed and torque transformation.
18 Control range and characteristics of the hydrostatic transmission.
19 Combined mechanical and hydrostatic transfers, composition, characteristics, efficiency.
20 Hydrodynamic transmission, distribution, basic characteristics.
21 Hydrodynamic coupling, principle of operation, characteristics, regulation.
22 Hydraulic brake, principles, characteristics, applications.
23 Torque converter, principles, structure, characteristics.
24 Combined mechanical and hydrodynamic transfers, composition, characteristics, use.
25 Multi-engine drives, benefits, organization, theory, optimization.
26 The common characteristics of the motor and load, design, static steadiness.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
The program of lectures
Week Lectures content
1 Purpose and definitions of power. Kinematics load. The basic equation of motion.
2 Application of equations of motion, work load and drive systems. Optimization of power transfer.
3 Energy balance of heat transfer performance. Power losses.
4 Motors: classification, characteristics, properties. DC and AC motors.
5 Engines - classification, characteristics, properties, regulation.
6 Combustion turbines. Pneumatic motors. Motors.
7 Mechanical transmission, distribution, properties and loss.
8 Hydrostatic transmission, structure, parameters of regulation.
9 Hydrodynamic transmission, distribution, properties. Hydrodynamic coupling theory, design characteristics.
10 Torque converter, theory, design characteristics. Cooperation hydrodynamic transmission with driver.
11 Combined transfers. Purpose and application. Branching performance.
12 Multi-engine drives. The theory characteristics.
13 A common characteristic of the motor and load. Design and calculation of the driving engines.
14 Comparison of different types of power transfer. Consultation.
Program of exercises and seminars + individual students' work
Week Content of exercises and seminars
1 Continuation of a lecture.
2 Application of equations of motion. Parameters drive the heavy door.
3 Calculation of the characteristic drive. Calculation of the travel drive vehicle. Program No. 1
4 Calculation of warming and cooling in the hydrostatic power transmission. Program No. 2
5 Seminar - brochures transfers, engines and applications.
6 Calculation of regulating the characteristics of the hydrostatic transmission. Program No. 3
7 Consultation for the specified programs.
8 Calculation of hydrodynamic coupling.
9 Continuing the calculation of hydrodynamic coupling.
10 Calculation of the hydrodynamic characteristics of the drive.
11 Control Test.
12 Calculation of multi-engine drive.
13 Reserve and consultations.
14 Credits
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction