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Course title Testing and Calculating of Vehicles
Course code TraZ5028
Credit points (ECTS) 3
Total Hours in Course 81
Number of hours for lectures 12
Number of hours for seminars and practical classes 0
Number of hours for laboratory classes 12
Independent study hours 57
Date of course confirmation 21/03/2018
Responsible Unit Institute of Engineering and Energetics
 
Course developers
Dr. sc. ing., prof. Dainis Berjoza

There is no prerequisite knowledge required for this course
 
Course abstract
The aim of the study course is to acquire the properties and their impact on automobile operation as well as calculation of different automobile units and systems. The knowledge is sequentially supplemented by laboratory work that is carried out in laboratories and road condition tests.
Learning outcomes and their assessment
1. Knowledge - a master student obtains extended theoretical and practical knowledge, an understanding of the exploitation characteristics of automobiles that correspond to the latest achievements of science in the theory of automobiles. Knows methods of calculation of main parts of vehicles - Test 1.
2. Skills - a master student is able to use the knowledge obtained in the theory of exploitation of automobiles in a creative way while conducting experimental studies and performing calculations to compare, assess, and analyse various vehicles. A master student is able to convincingly explain and discuss complicated topical issues concerning the theory of automobiles.Knows the test methods for conventional fuels and alternative energy vehicles - Test 2.
3. Competence - a master student can independently and critically analyse complicated engineering problems in the theory of automobiles, justify the decisions made, integrate the knowledge of this course with that obtained in other fields and courses to develop a methodology and process data to determine various parameters for the exploitation characteristics of automobiles. Ability to determine analytical and experimental parameters of vehicle operation - laboratory and practical work.
Course Content(Calendar)
1. A brief history of vehicle theory development. Principles of calculation of automobile processes, mechanisms and systems. (2h)
2. Vehicle traction calculation. Engine power selection. (2h)
3. Friction clutches. Torque transfer. Clutch characteristics and materials. (2h)
4. Automotive gearboxes and their necessity justification. (2h)
5. Variation of resistance depending on driving speed. Equal power curve. (2h)
6. Gearbox calculation. Automatic transmissions, their correlation. (2h)
7. End gear. Differentials, their blockages and types. (2h)
8. Differential torque transfer relationships. Symmetric and asymmetric differentials. (2h)
9. Variation of turning speed depending on the type of turning mechanism used. (2h)
10. Selection and calculation of brakes. Brake booster, their calculation. (2h)
11. ABS curves and basic relationships. Selection of brake cylinder parameters. (2h)
12. Calculation of rim brakes. Calculation of disc brakes. Calculation of cylinder force. (2h)
13. Steering equipment, selection of its parameters. (2h)
14. Vehicle road tests using data recorders. (2h)
15. Processing and analysis of trial data. (2h)
16. Methods of testing of vehicles and their assemblies. (2h)
Requirements for awarding credit points
Test with mark All tests and laboratory work must be developed and credited.
Description of the organization and tasks of students’ independent work
Independent preparation for tests and laboratory works. Preparation of laboratory reports
Criteria for Evaluating Learning Outcomes
The grade of the test consists of the average mark obtained in the tests. The student can obtain a successful assessment of the test if at least 50% of the test questions are answered correctly.
Compulsory reading
1. Berjoza D. Automobiļu teorija. Metodiskie norādījumi kursa darba izstrādei, uzdevumi un laboratorijas darbi. Jelgava: LLU, 2007. 54 lpp.
2. Berjoza D. Automobiļu teorija. Mācību grāmata. Jelgava: LLU, 2008. 200 lpp.
3. Wong J.Y. Theory of ground vehicles. 4th ed. Hoboken, New Yersey: John Wiley & Sons Inc., 2008. 560 p.
4. Pommers J., Liberts G. Automobiļa teorija. Rīga: Zvaigzne, 1985. 244 lpp.
Further reading
1. Tabellenbuch Elektrotechnik. Electrical engineering :tables, standards, formulas. Häberle, Gregor ... [et al.]. Haan-Gruiten: Verl. Europa-Lehrmittel, 2008. 456 p.
2. Bonnick A. Automotive Science and Mathematics. Amsterdam [etc.]: Elsevier, 2008. 241 p.
3. Renner G., Wimmer A. Kalkulation fur Kraftfahrzeugmeister. Deuchland: Europa- Lehrmittel, 2005. 176 p.
Notes
Compulsory for TF Master's study program of Agricultural Engineering for the subprogram Power Vehicles and Service.