Course code MašZ4056

Credit points 2

Hydraulics and Hydraulic Drive II

Total Hours in Course80

Number of hours for lectures16

Number of hours for seminars and practical classes8

Number of hours for laboratory classes8

Independent study hours48

Date of course confirmation21.03.2017

Responsible UnitInstitute of Mechanics

Course developer

author Mehānikas institūts

Ēriks Kronbergs

Dr. sc. ing.

Prior knowledge

Meha4008, Theoretical Mechanics I

Meha4009, Theoretical Mechanics II

Course abstract

The study course, based on the basic rules of fluid mechanics, acquires the design of the main hydro units, regulating devices, functional significance, operating principles, hydrosystem design skills and calculation methodology in accordance with the technological requirements.

Learning outcomes and their assessment

Knowledge - understands the structure, operation and applications of static (volumetric) and dynamic hydro devices - Laboratory works.
Skills - oriented in the schematic drawings of hydraulic drive diagrams, assesses the functioning of static and dynamic hydraulic systems, understands the functions, applicability and operation of apparatus used in the scheme, can organize maintenance work - Laboratory works.
Competence - chooses equipment, justifies the choice and designs the hydropower of different machinery and machinery members, and carries out the maintenance of the hydraulic drive for maintenance of non-refractory operation - Homework.

Course Content(Calendar)

1. Types of hydraulic propulsion and control devices for control devices.
2. Hydraulic drive breakdown.
3. Simple hydraulic drive circuits. Valves. Laboratory work: Valve research.
4. Working fluids, their characteristic, requirements.
5. Distributors - structure, tasks, selection of key parameters and calculations. Laboratory work: Direct control valves
6. Speed control techniques.
7. Hydraulic drive analysis depending on the throttle closure diagram.
8. Speed controllers, their construction and application. Laboratory work: Throttle regulation.
9. Hydraulic servo systems - manipulators.
10. Hydraulic motor synchronization.
11. Proportional hydraulic drive.
12 Analysis of proportional hydraulic drive scheme design, basic calculations of hydraulic drive.
13. Choice of pump design for hydraulic drive. Laboratory work: Gear pumps. Laboratory work: Piston pumps.
14. Drive power calculation.
15. Hydraulic drive diagnostics.
16. Basic principles of hydraulic drive design. Laboratory work: Choice of auxiliary equipment.

Requirements for awarding credit points

The student’s exam is arranged after independent work defended and defended all laboratory works.

Description of the organization and tasks of students’ independent work

1. Homework: Hydraulic drive design - 24 h.
2. Laboratory data processing - 24h.

Criteria for Evaluating Learning Outcomes

The examination evaluation includes cumulative assessments of defended homework and defended laboratory works.

Compulsory reading

1. Lielpēters P., Dorošenko R., Geriņš Ē. Fluidtehnika. Rīga, 2005. 183 lpp.
2. Birzietis G., Kaķītis A., Kronbergs Ē., Mežs A., Vizbulis J. Lauksaimniecības hidraulika. Uzdevumi. B. v.: b. i., 2002. 64 lpp.
3. Mežs. A., Vizbulis J. Tilpuma hidropiedziņa. 1. lekcija. LLU. Jelgava, 2009. 65 lpp.
4. Kronbergs Ē. Hidraulika un hidropiedziņa. Metodiskie norādījumi. Jelgava, 2015. 82 lpp.

Further reading

1. Merkle D., Štraiders B., Toms M. Hidraulika: pamatlīmenis. Apz. D. LB. - TP 501 - LV4. izdevums 01/92. 2001. 283 lpp. Rīga: Festo, 2000.

Periodicals and other sources

1. International Journal of Fluid Power Published by Fluid Power Net International (FPNI). ISSN: 1439-9776.
Pieejams arī: 1.html
2. Fluid Power Journal ISSN: 1073-7898. Pieejams arī:


The study course is included as compulsory part of the academic agricultural engineering Bachelor’s study programme at Faculty of Engineering for full-time and part-time studies.