Course detail

Hydraulic Gears of Machines

FSI-FHPAcad. year: 2013/2014

The course deals with the following topics – Hydrostatic transmissions: elements of hydrostatic mechanisms - converters, elements for pressure regulation, elements for flow regulation, elements for flow direction regulation, auxiliary elements, proportional elements. Calculation of hydrostatic circuits, starting and braking, thermal balance. Hydrostatic circuits of working machines. Hydrodynamic transmissions: hydrodynamic couplings and hydraulic torque converters.

Language of instruction

Czech

Number of ECTS credits

5

Mode of study

Not applicable.

Guarantor

doc. Ing. Miroslav Škopán, CSc.

Department

Institute of Automotive Engineering (ÚADI)

Learning outcomes of the course unit

Students will be acquire knowledge of designing and construction especially of mobile machines from the selected field. They will widen and deepen their knowledge of design of regulative hydrostatic circuit – with respect to the latest development trends.

Prerequisites

Successful completion of the course is conditional on the basic knowledge of technical mechanics, physics, machine parts and their mechanisms, physics of materials and principles of electrical engineering.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

The course is taught through lectures explaining the basic principles and theory of the discipline. Exercises are focused on practical topics presented in lectures. Teaching is suplemented by practical laboratory work.

Assesment methods and criteria linked to learning outcomes

Examination has a written and an oral part. In the written part student can obtain max. 50 points, which is necessary to be accepted for the oral part – 25 points. The oral part is evaluated as follows: 50% written part, 40% oral part, 10% work in the seminars.

Course curriculum

Not applicable.

Work placements

Not applicable.

Aims

The aim of the course is to widen and deepen students’ knowledge of machine parts and mechanisms and hydraulic machines with respect to the transport technology.

Specification of controlled education, way of implementation and compensation for absences

Course-unit credit is awarded on condition of having attended the seminars actively and completed all tasks, as well as fulfilled the requirements of continuous control.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Majmudar, R.S.: Oil Hydraulics Systems, McGraw-Hill 2003, ISBN 0-07-140669-7 (EN)

Recommended reading

Pavlok, B. – Hružík, L. – Bova, M.: Hydraulická zařízení strojů. VŠB – Technická univerzita Ostrava, 2007, 123 s. (CS)
SUBRAMANYA, K. 1000 solved problems in fluid mechanics (includes hydraulic machines). New Delhi: Tata McGraw-Hill, 2005, ix, 456 s. : il. ISBN 978-0-07-014476-7. (EN)
ŠKOPÁN, M.: Hydraulické převody strojů. Elektronická verze, VUT Brno 2009 (CS)

Classification of course in study plans

  • Programme B2341-3 Bachelor's

    branch B-SSZ , 3 year of study, summer semester, compulsory

Type of course unit

 

Lecture

39 hod., optionally

Teacher / Lecturer

doc. Ing. Miroslav Škopán, CSc.

Syllabus

1. Theory of hydrostatic mechanisms, continuity equation, Bernoulli’s relation
2. Hydraulic resistances in the hydrostatic mechanisms
3. Transmission of pressure energy in the hydrostatic mechanisms – resistances H, R, D
4. Switching-in resistances of the same and different type, resistance network
5. Starting and braking hydrostatic mechanisms, heat calculation of hydrostatic circuits
6. Components of hydrostatic mechanism – converters and their parameters
7. Hydraulic generators – construction, characteristic curves, circuits
8. Rotary and rectilinear hydraulic motors – construction, characteristic curves, connection in circuit
9. Elements for pressure, direction and rate of flow control
10. Proportional elements, auxiliary elements
11. The ground of hydrostatic mechanisms design
12. Hydrostatic propulsive circuits of mobile working machines
13. Hydrodynamic couplings and hydraulic torque converters

Exercise

7 hod., compulsory

Teacher / Lecturer

doc. Ing. Miroslav Škopán, CSc.

Syllabus

1. Fluids of hydrostatic circuits and their properties
2. – 3. Hydraulic loss in hydrostatic mechanisms
4. Calculation of resistances across movement, acceleration, deformation
5. – 6. Calculation of starting and braking hydrostatic mechanisms
7. Heat calculation of hydrostatic mechanisms