• Motori SUS, Semester 2, position 1

The aims of the course are to provide theoretical and practical study about engine dynamics,vibrations and design of engine parts. Through the evaluation of engine kinematics, dynamics and engine parts mechanical load and stress students acquires a sense for design of engine parts and complete engine. Basic knowledge about 3D modeling of engine parts and stress calculation using FEM is also provided and enable modern approach to engine design.

The merger of theoretical knowledge of mechanics, basics of strength of constructions and machine elements and its applications on engine design. Training students for engine parts and systems design, modeling and calculation. The acquisition of basic theoretical and practical knowledge required for complete engine designing.

1. Kinematics of piston mechanism. 2. Dynamics of piston mechanism and transfer of the forces through engine mechanism. Variations of engine torque and crankshaft rotational speed. 3. Balancing of inertia forces of single cylinder engine and inertia forces and its moments of multi cylinder engines. 4. The role, design, choice of materials and evaluation of mechanical stress of engine piston group elements. 5. Design, choice of materials and evaluation of mechanical stress of engine connecting rod. 6. Design, choice of materials and evaluation of mechanical stress of engine crankshaft and crankshaft bearing. 7. Problem of engine vibrations.8. Vibration on the engine mounts.9. Torsion vibrations of engine crankshaft.

1. Forces of engine piston mechanism; crankshaft tangential force and the variations of engine torque and crankshaft rotational speed, the role and calculation of engine flywheel; instructions for engine kinematics and dynamics calculation. 2. Examples of engine parts design and thermal and mechanical stress calculation; instructions for mechanical calculation of piston group, connecting rod and crankshaft. 3. The application of 3-D modeling in engine parts design;

No prerequisites required.

1. D.Knežević: Engine design 1-Handouts,2020., available in PDF format in IC engines department. (in Serbian) 2. Sections of the engines. Various parts of the engines. Complete engines prepared for disassembling and assembling. 3. Kevin L.Hoag: Vehicular Engine Design - Powertrain, SpringerWienNewYork, 2006.

Total assigned hours: 75

New material: 20
Elaboration and examples (recapitulation): 10

Auditory exercises: 16
Laboratory exercises: 0
Calculation tasks: 6
Seminar paper: 0
Project: 8
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Review and grading of calculation tasks: 2
Review and grading of lab reports: 0
Review and grading of seminar papers: 0
Review and grading of the project: 5
Test: 0
Test: 3
Final exam: 5

Activity during lectures: 0
Test/test: 15
Laboratory practice: 0
Calculation tasks: 15
Seminar paper: 0
Project: 30
Final exam: 40
Requirement for taking the exam (required number of points): 30

M.C. Živković: Internal combustion engines, part 2. Engine design 1, Kinematics and dynamics of piston mechanism. Faculty of Mech. Eng., Belgrade, 1983; M.C. Živković, R. Trifunović: Internal combustion engines, part 2. Engine design ( in serbian) University of Belgrade, Faculty of Mechanical Engineering, 1990.; Van Basshuysen, R., Schafer, F. (Editors): Internal Combustion Engine Handbook: Basics, Components, Systems, and Perspectives, SAE International, Warrendale, 2004. ISBN 978-0- 7680-1139-5; Kevin L.Hoag: Vehicular Engine Design - Powertrain, SpringerWienNewYork, 2006. ISBN-10 3-211-21130-6