01983nab a2200217 4500 20260520003101.0 260224s2012 xxu ing Inglés Numerical and Experimental Study on the Combustion and Emission Characteristics of a Dimethyl Ether (DME) Fueled Compression Ignition Engine mayo/jun. 2012 15/05/2013 ; 15/05/2013 10 p. ; 479-489 Traducción del resúmen del autor: A numerical investigation was carried out to study on the combustion and emission characteristics of dimethyl ether (DME) with wide ranges of injection timings in compression ignition engines. In order to simulate DME combustion processes, a KIVA-3V code coupled with a chemistry solver was used to solve the detailed chemical kinetics model of DME oxidation. In addition, the Kelvin-Helmholtz-Rayleigh-Taylor (KH-RT) hybrid breakup model and Renormalization Group (RNG) k-e models were applied to analyze the spray characteristics and turbulent flow, respectively. To predict the NOx formation during DME combustion, a reduced Gas Research Institute (GRI) NO mechanism was used. From these results on the combustion and emission, the calculated results were compared with experimental ones for the same operating conditions. In the combustion characteristics, the calculated combustion pressure and heat release rates agreed well with experimental results. The levels of experimental NOx emissions was reduced as the start of the injection timing retarded, and also these trends appeared in calculated emission characteristics. Additionally, the calculated CO and HC emissions show an increasing trend as the start of the injection is retarded. 3 Oil and Gas Science and Technology 67 ARTICULO Kim, Hyung Jun 53198 Wook Park, Sung 53199 Sik Lee, Chang 53200 187697 187697 0 0 0 0 255516 BAAB BAAB 2026-03-06 200059839 0 200059839 2026-03-06 00:17:41 2026-03-06 ARTICULO