Driving Mechanisms (FSI-QHL)

Academic year 2023/2024
Supervisor: prof. Ing. Václav Píštěk, DrSc.  
Supervising institute: ÚADI all courses guaranted by this institute
Teaching language: Czech
Aims of the course unit:
Learning outcomes of the course Driving Mechanisms is to acquaint students with current concepts of propulsion systems with combustion engines as well as with hybrid and electric drives and computational models for determining dynamic force and torque effects in this systems. These computational models are the primary tool for choosing the optimal driveline design and construction of modern passenger and commercial vehicles.
Learning outcomes and competences:
The subject Driving Mechanisms enables students to learn of vehicle driving mechanisms arrangement and computational models for determination the course of internal and external forces and torque, optimal driving mechanism configuration design of in-line, V- and non-conventional arrangement engines together with engine revolution non-uniformity analysis and vibration of powertrains.
Prerequisites:
Matrix calculus, differential and integral calculus, differential equations. Technical mechanics, kinematics, dynamics, elasticity and strength. Fourier analysis.

Links to other subjects:
recommended co-requisite: Tractors [QT]
compulsory co-requisite: Dynamics of Vehicles [QDY]
compulsory co-requisite: Dynamics of Vehicles [QDY-A]
Course contents:
Objective of the Drive Mechanisms course is to acquaint students with basic concepts and layout of propulsion systems of passenger and utility vehicles with conventional as well as hybrid and electric drives. Mechanisms of combustion engines. Kinematics and dynamics of the drive mechanisms. Internal and external forces of combustion engines. Engine torque, harmonic analysis. Forces affecting the bearings of a piston machine. Balancing of inertia forces and of line engine torque, use of balancing shafts. Dynamics of V-engines and engines with unconventional power train arrangement. Irregularity of combustion engine running, design of flywheel. Cam mechanisms. Hybrid and electric drive of vehicles.
Teaching methods and criteria:
The course is taught through lectures explaining the basic principles and theory of the discipline. Exercises are focused on practical topics presented in lectures.
Assesment methods and criteria linked to learning outcomes:
Requirements for Course-unit credit award:
The orientation within problems discussed and the ability of solving them, examined by working-out assigned tasks without significant mistakes. Continuous study checking is carried out together with given tasks verification.
Examination:
The exam verifies and evaluates the knowledge of physical fundamentals of presented problems, theirs mathematical description on a presented level and application to solved tasks. The exam consists of a written part (test) and if necessary an oral part.

Final evaluation consists of:
1. Evaluation of the work on seminars (elaborated tasks).
2. Result of the writing part of the exam (test).
3. The result of the oral exam if necessary.
Controlled participation in lessons:
Attendance in seminars is obligatory, checked by a teacher. The way compensation of absence is solved individually with a course provider.
Type of course unit:
    Lecture  13 × 2 hrs. optionally                  
    Computer-assisted exercise  13 × 2 hrs. compulsory                  
Course curriculum:
    Lecture

1. Mechanisms of power units and their computational models. Kinematics of centric crank mechanism. Kinematics of eccentric crank mechanism, mechanisms with connecting rod.
2. Dynamics of crank mechanism, computational models, internal and external forces.
3. Torque of piston machines, harmonic components, uneven running, flywheel.
4. Balancing of inertial forces and moments in the crank mechanism, balancing units.
5. Dynamics of crank mechanism of engines with a small number of cylinders.
6. Dynamics of the crank mechanism of in-line piston machines.
7. Dynamics of crank mechanism of fork engines, unconventional mechanisms.
8. Oscillations of drives with reciprocating machines, natural frequencies, forced oscillations.
9. Dynamics of automobile drives with gears, two-mass flywheel. Tuning of dynamic drive systems.
10. Dynamic vibration dampers in automotive technology. Pendulum vibration eliminators.
11. Cam mechanisms, kinematics and dynamics of cam mechanisms.
12. Flexible bearing of drive units, center of elasticity, main axes of elasticity.
13. Drivetrain of vehicles with hybrid and electric drives, active vibration damping. 
    Computer-assisted exercise

01. Effective engineering computational tools, computational technology.
02. Computational tools in the branch, computational Matlab software.
03. Matlab utilization, data file handling, data visualization.
04. Centric crank mechanism, course of kinematic quantities.
05. Kinematic quantities of eccentric crank mechanism.
06. Primary and secondary forces in crank mechanism, engine torque.
07. Engine p-alfa diagram, forces on components of cranktrain.
08. Numerical Fourier analysis of engine torque, harmonic orders.
09. Balancing of single-cylinder engine and multi-cylinder in-line engines.
10. Balancing of V-engines.
11. Cams and their classification.
12. Course of kinematic quantities of engine cam mechanisms.
13. Vibration of powertrains, computational models and possibilities of vibration damping.
Literature - fundamental:
1. DAVITASSHVILI, Nodar a Valeh BAKHSHALIEV. Dynamics of Crank-Piston Mechanisms. Springer, 2016. ISBN 981100322X.
2. ADAMS, Maurice L. Bearings: basic concepts and design applications. Boca Raton: CRC Press, 2017. ISBN 9781138049086.
3. NORTON, Robert L. Cam design and manufacturing handbook. New York: Industrial Press, c2002. ISBN 0-8311-3122-5.
4. HAYES, John G. a Gordon A. GOODARZI. Electric powertrain: energy systems, power electronics & drives for hybrid, electric & fuel cell vehicles. Hoboken, NJ: John Wiley, 2018. ISBN 978-1-119-06364-3.
Literature - recommended:
1. Internal combustion engine handbook: basics, components, systems, and perspectives, second edition. Warrendale, PA: SAE International, 2016. ISBN 9780768080247.
2. Píštěk, V.: Aplikovaná mechanika. Učební text FSI VUT v Brně.
2. HEISLER, Heinz. Advanced engine technology. Warrendale, PA: SAE International, c1995. ISBN 1560917342.
3. ZIMA, Stefan. Kurbeltriebe: Konstruktion, Berechnung und Erprobung von den Anfängen bis heute. 2. vyd. Wiesbaden: Vieweg, 1999. ISBN 3-528-13115-2.
4. FUCHS, Anton: Automotive NVH technology. New York, NY: Springer Berlin Heidelberg, 2015. ISBN 978-3-319-24053-4.
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 1 W