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| MAKL7280 | MIXTURE FORMATION AND COMBUSTION IN ENGINES | 3+0+0 | ECTS:7.5 | | Year / Semester | Fall Semester | | Level of Course | Third Cycle | | Status | Elective | | Department | DEPARTMENT of MECHANICAL ENGINEERING | | Prerequisites and co-requisites | None | | Mode of Delivery | Face to face | | Contact Hours | 14 weeks - 3 hours of lectures per week | | Lecturer | Prof. Dr. Olkan ÇUVALCI | | Co-Lecturer | None | | Language of instruction | Turkish | | Professional practise ( internship ) | None | | | | The aim of the course: | | Mixture formation, combustion and emission formation precesses, and primery parameters affecting these processes in Spark Ignition (Gasoline) and Comprssion Ignition (Diesel) engines. |
| Programme Outcomes | CTPO | TOA | | Upon successful completion of the course, the students will be able to : | | | | PO - 1 : | learn the primery parameters affecting mixture formation in piston engines, | 1,5,8,9,10 | 1,3 | | PO - 2 : | learn in-cylinder physical and chemical processes during combustion, and the effects of mixture formation and other parameters on combustion, | 1,5,8,9,10 | 1,3 | | PO - 3 : | determine equilibrium combustion products as an application of combustion thermochemistry, and determine reaction rate of some important reactions such as nitrogenoxides as an application of reaction kinetics, | 1,5,8,9,10 | 1,3 | | PO - 4 : | leran the basic dimenssional and non-dimensional models used for modeling of combustion in piston engines. | 1,5,8,9,10 | 1,3 | | CTPO : Contribution to programme outcomes, TOA :Type of assessment (1: written exam, 2: Oral exam, 3: Homework assignment, 4: Laboratory exercise/exam, 5: Seminar / presentation, 6: Term paper), PO : Learning Outcome | | |
| Operating principles of piston engines, energy conversion, theoritical and real engine cycles. Combustion theory, chemical equilibrium and reaction kinetics. Mixture formation, ignition, and combustion processes in Spark Ignition engines. Mixture formation, autoignition, and combustion processes in Compression Ignition engines. Effects of mixture formation and combustion on emissions of Homogenous Charge Compression Ignition (HCCI) engines. General considerations about combustion models. |
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| Course Syllabus | | Week | Subject | Related Notes / Files | | Week 1 | Engine types and their operation principles. | | | Week 2 | Working fluid properties in engine cycles: unburned mixture properties, gas property relations, simple ideal gas model. | | | Week 3 | Thermodynamic charts, tables and computer rutines for determination of unburned and burned gas properties. | | | Week 4 | Ideal models of engine cycles, differences between real and ideal engine cycles. | | | Week 5 | Gas exchange process and factors affecting volumetric efficiency in engines. | | | Week 6 | Fuel metering in spark ignition engines, fuel injection systems. | | | Week 7 | In-cylinder flows and gas motions in engines. Mean flow and turbulence characteristics. | | | Week 8 | Essential features of the combustion in spark-ignition engines, thermodynamic analysis of the combustion. | | | Week 9 | Mid-term Exam | | | Week 10 | Flame structure, laminar and turbulent flame speeds, flame development. | | | Week 11 | Cyclic variations, partial burning and misfire. | | | Week 12 | Knocking combustion and surface ignition in spark-ignition engines. | | | Week 13 | Essential fearures of the combustion in compression-ignition engines. Direct-injection and indirect-injection diesel engines. | | | Week 14 | Fuel spray structure and behavior, atomization. | | | Week 15 | Ignition delay and autoignition fundamentals. | | | Week 16 | Mixing-controlled combustion. | | | |
| 1 | Heywood, JB. 1988; Internal Combustion Engine Fundamentals, McGraw Hill, New York. | | | |
| 1 | Merker, GP., Schwarz, C., Stiesch, G., Otto, F. 2006; Simulating Combustion, Springer, New York. | | | 2 | Ferguson, CR. 1986; Internal Combustion Engines Applied Thermosciences, John Wiley and Sons, New York. | | | |
| Method of Assessment | | Type of assessment | Week No | Date | Duration (hours) | Weight (%) | | Mid-term exam | 9 | 15/11/2012 | 2 | 20 | | In-term studies (second mid-term exam) | 12 | 06/12/2012 | 2 | 30 | | End-of-term exam | 19 | 19/01/2012 | 2 | 50 | | |
| Student Work Load and its Distribution | | Type of work | Duration (hours pw) | No of weeks / Number of activity | Hours in total per term | | Yüz yüze eğitim | 3 | 14 | 42 | | Sınıf dışı çalışma | 4 | 14 | 56 | | Arasınav için hazırlık | 3 | 5 | 15 | | Arasınav | 2 | 1 | 2 | | Uygulama | 1 | 7 | 7 | | Ödev | 4 | 7 | 28 | | Dönem sonu sınavı için hazırlık | 3 | 5 | 15 | | Dönem sonu sınavı | 2 | 1 | 2 | | Diğer 2 | 3 | 5 | 15 | | Total work load | | | 182 |
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