Akademik Veri Yönetim Sistemi
Journal of the Faculty of Engineering and Architecture of Gazi University, cilt.39, sa.2, ss.785-796, 2024 (SCI-Expanded)
Modeling of in-cylinder combustion in internal combustion engines is still a complex issue. Further development studies are needed to accurately predict the performance, combustion regimes, and emission behavior of fuels other than conventional fuels such as gasoline or diesel. In this study, experimental data in full load diesel combustion regime were used to validate the numerical model using the 0/1-dimensional AVL Boost program. Vibe 2-Zone combustion model was used during the validation studies. As a result of the analysis, when the performance and emission values were examined, it was seen that there was close to 94% compliance. After numerical verification in the diesel combustion regime, the system was converted to a reactivity controlled compression ignition (RCCI) engine with the addition of an injector for propane injection to the intake port. Afterwards, the effects of the use of different propane ratios and different start of combustion times on the performance, combustion characteristics, and emission values of an RCCI engine were investigated by keeping the total fuel mass constant. As a result, with the use of 90% propane and 10% diesel fuel, an 11% improvement in performance was achieved, and it was observed that the use of catalytic exhaust equipment was not required for emission values. In addition, it has been determined that the best combustion start time for performance and emission values was -6 °CA ATDC.