Tractors (FSI-QT)

Academic year 2021/2022
Supervisor: prof. Ing. František Bauer, CSc.  
Supervising institute: ÚADI all courses guaranted by this institute
Teaching language: Czech
Aims of the course unit:
The main goal is to describe utility properties of tractors.
Learning outcomes and competences:
This course presents a survey of the current situation in the tractor design.
Prerequisites:
Design of machine parts, kinematics and dynamics of machine mechanism, evaluation of these elements from the viewpoint of mechanics, elasticity and strength. Thermo cycles of combustion engines and thermal load. Combustion engines maps.

Links to other subjects:
compulsory co-requisite: Driving Mechanisms [QHL]
Course contents:
The subject introduces the construction of various functional tractor groups. The emphasis is laid upon the motional mechanics, the interaction with the field, the traction characteristics and the adhesion load of driving wheels as related to the limit load of the substrate. The subject evaluates various systems of transmitting the drive force of the tractor from the viewpoint of achieved efficiency and traction power, while showing the opportunities to increase the traction efficiency by way of the regulation hydraulics of a tractor.
Teaching methods and criteria:
The course is taught through lectures explaining the basic principles and theory of the discipline. Teaching is suplemented by practical laboratory work.
Assesment methods and criteria linked to learning outcomes:
Course-unit credit: Active participation in workshops. Examination: Written and oral.
Controlled participation in lessons:
Attendance in seminars is obligatory, checked by teacher. The way of implementation and compensation of absence is solved individually with subject guarantor.
Type of course unit:
    Lecture  13 × 2 hrs. optionally                  
    Laboratory exercise  13 × 2 hrs. compulsory                  
Course curriculum:
    Lecture 1. Driving gearand power transmission.
2. Driving gear auxiliary drive shaft.
3. Hydrostatic gears of tractors.
4. Exploitation equipment of tractors.
5. Forces influencing tractors with attached implement.
6. Forces influencing tractors four-wheel tractor.
7. Forces influencing caterpillar tractors.
8. Rolling resistance, drving force, slippage,
9. Output balance.
10. Adhesion and pulling efficiency.
11. Puling characteristics.
12. Tractors kit.
13. Performance of tractor aggregations.
    Laboratory exercise 1. Driving gear and power transmission.
2. Driving gear auxiliary drive shaft.
3. Practical measurements of gear boxes – saw tooth diagram.
4. Exploitation equipment of tractors.
5. Forces influencing tractors with attached implement.
6. Practical measurements of regulatory systems of three-point suspensions.
7. Forces influencing tractors four-wheel tractor.
8. Measurements on roll dynamometers.
9. Output balance.
10. Measurements on roll dynamometers.
11. Adhesion and pulling efficiency.
12. Pulling characteristics.
13. Measurements on roll dynamometers.
Literature - fundamental:
1. Wong , J.Y.: Terramechanics and Off-Road Vehicle Engineering. Elsevier 2009. pp.488. ISBN: 978-0-7506-8561-0
2. Sanjay Kumar: A Text Book of Tractor at a Glance, Vydavatel: International Book Distributing Company, 510 str., rok vydání 2007, ISBN: 9788181891853
3. Reinius,K.T.: Traktoren-Technik und ihre Anwendung.
4. BAUER, František, Pavel SEDLÁK a Tomáš ŠMERDA. Traktory. 1. V Brně: Mendelova zemědělská a lesnická univerzita, 2006. ISBN 80-867-2615-0.
5. Semetko,J. a kolektiv: Mobilní energetické prostředky 2 (Mechanizmy vozidel).
6. Semetko,J. a kolektiv: Mobilní energetické prostředky 3 (Traktory a automobily).
Literature - recommended:
1. WONG, J. Y. Terramechanics and off-road vehicle engineering: Terrain behavior, off-road vehicle performance and design. Second edition. Kidlington, Oxford: Elsevier/BH, 2010. ISBN 978-0-7506-8561-0.
2. Sanjay Kumar: A Text Book of Tractor at a Glance, Vydavatel: International Book Distributing Company, 510 str., rok vydání 2007, ISBN: 9788181891853
3. BAUER, František, Pavel SEDLÁK a Tomáš ŠMERDA. Traktory. 1. V Brně: Mendelova zemědělská a lesnická univerzita, 2006. ISBN 80-867-2615-0.
4. OBŮRKA, Stanislav. Traktory. Brno: Ediční středisko VUT, 1990, 155 s. : obr., tab., grafy. ISBN 80-214-0081-1.
The study programmes with the given course:
Programme Study form Branch Spec. Final classification   Course-unit credits     Obligation     Level     Year     Semester  
N-ADI-P full-time study --- no specialisation -- Cr,Ex 6 Compulsory-optional 2 2 S