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Theory of ICE and Simulation (E211173)
Katedra:ústav autom.,sp.motorů a kolej.voz. (12120)
Zkratka:TICESchválen:23.03.2015
Platí do: ??Rozsah:4+1
Semestr:ZKredity:5
Zakončení:Z,ZKJazyk výuky:EN
Anotace
Theoretical description of internal combustion engine (ICE) is presented - description of important physical phenomena including their mathematical models.
Vyučující
doc. Ing. Oldřich Vítek Ph.D.
Zimní 2017/2018
doc. Ing. Oldřich Vítek Ph.D.
Zimní 2016/2017
doc. Ing. Oldřich Vítek Ph.D.
Zimní 2015/2016
Osnova
1. Basic conservation laws - mass, momentum and energy.
2. Basics of ICE combustion - laminar/turbulent flame, physical/chemical induction time.
3. Application of thermodynamic laws to combustion case - 1st law of thermodynamics, "chemical" enthalpy and lower heating value of fuel, adiabatic flame temperature. Basics of combustion chemistry - equilibrium, kinetics.
4. Chained chemical reactions, chemical mechanism of hydrogen/hydrocarbon, introduction to pollutant production in ICE.
5. Combustion in ICE - time evolution (rate of heat release), different combustion systems (SI, CI, HCCI, CAI, PCI, etc).
6. In-cylinder turbulence and its influence on in-cylinder transport processes.
7. SI engine combustion - rate of heat release (ROHR), turbulent flame structure, influence of turbulence, thermodynamic analysis (single/multi-zone model), Tabaczynski model, mixture ignition, influence of ROHR on ICE thermodynamic cycle (including cyclic variations), incorrect combustion modes (knocking, incomplete combustion, etc.), limits of stable ICE operation.
8. CI engine combustion - high-pressure fuel injection, combustible mixture formation, fuel jet time evolution, fuel drops (size distribution, SMD, time decay, evaporation), fuel jet interaction with walls and with in-cylinder large-scale flow strucutre(s), ROHR, influence on ICE thermodynamic cycle.
9. Combustion chamber geometry shape - SI/CI engines, influence on in-cylinder flow structure.
10. Homogeneous combustion (HCCI), CAI, etc. - general properties, advantages/disadvantages, simplified description.
11. Pollutant production in ICE - pollutant formation of general point of view, specifics of different combustion systems (SI, CI, etc.), NOx formation in SI engine (Zeldovich model), CO formation, unburnt hydrocarbons formation, estimate of exhaust gas composition.
12. Energy fluxes in ICE - heat transfer (Woschni, Eichelberg), detailed thermodynamic analysis, warm-up of exhaust manifold.
13. Mechanical losses in ICE - mechanical efficiency, simplified models.
Osnova cvičení
Literatura
Heywood, J.B.: Internal Combustion Engine Fundamentals. McGraw-Hill, London, England. 1988. ISBN 0-07-028637-X.
Požadavky
Klíčová slova
Internal combustion engine, thermodynamics, combustion, mixture formation, emissions
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