Naslov
Experimental and Numerical Investigation of Combustion Characteristics of a Diesel Engine

Autori
Jurić, Filip ; Petranović, Zvonimir ; Vujanović, Milan ; Katrašnik, Tomaž ; Vihar, Rok

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Digital Proceedings of the 12th Conference on Sustainable Development of Energy, Water and Environment Systems - SDEWES / Ban, Marko [et al.] - Zagreb : Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu, 2017

Skup
12th Conference on Sustainable Development of Energy, Water and Environment Systems - SDEWES 2017

Mjesto i datum
Dubrovnik, Hrvatska, 04.10.2017. - 08.10.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Diesel Engine ; Spray ; Combustion ; Euler Eulerian ; multi-injection ; Detailed chemistry

Sažetak
It is known that the spray process has an influence on Diesel engine efficiency that can be increased by optimising certain spray and combustion parameters. In this research, the numerical simulation of Diesel engine combustion and spray processes with the commercial Computational Fluid Dynamics (CFD) software AVL FIRE™ is performed. The calculated results are compared with the data from the conducted experimental investigation. Characteristic for the observed experimental Diesel engine is that the liquid fuel is injected through the separated pilot and main injections. The pilot injection is used to produce a small amount of vapour that ignites and increases the mean in-cylinder temperature. At later crank angle positions, the main injection occurs. The focus is given on the comparison between Euler Lagrangian and Euler Eulerian spray modelling. The presented results show that the impact of the swirl on the in- cylinder pressure can be neglected for the observed operating point. Finally, the results from numerical simulations, such as the mean pressure, mean temperature, and rate of heat release are found to be in a good agreement with the experimental data and some similarities for used modelling approaches were noticed.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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