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A Study on the Strategy of Fuel Injection Timing according to Application of Exhaust Gas Recirculation for Off-road Engine
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 Title & Authors
A Study on the Strategy of Fuel Injection Timing according to Application of Exhaust Gas Recirculation for Off-road Engine
Ha, Hyeongsoo; Shin, Jaesik; Pyo, Sukang; Jung, Haksup; Kang, Jungho;
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The reduction technologies of exhaust gas from both the off-road engine and on-road vehicles are important. It is possible to apply various combustion technologies with engines after the application of a treatment technology to this field. In this study, main injection timing, pilot injection timing, and exhaust gas recirculation (EGR) rate were selected as the experimental parameters whose effects on the emission of exhaust gases and on the fuel consumption characteristics were to be determined. In the experiment, the emission of nitrogen oxide (NOx) and Smoke, and the Torque at the same fuel consumption level, were measured. The experimental data were analyzed using the Taguchi method with an L9 orthogonal array. Additionally, analysis of variation (ANOVA) was used to confirm the influence of each parameter. Consequently, the level of each parameter was selected based on the signal-to-noise ratio data (main injection timing, 3; pilot injection timing, 3; EGR rate, 2), and the results of the Taguchi prediction were verified experimentally (error: NOx, 10.3 %; Smoke, 6.6 %; brake-specific fuel consumption (BSFC), 0.6 %).
Design of experiment;Exhaust gas;Taguchi method;Exhaust gas recirculation;Before treatment technologies;Signal to noise ratio;
 Cited by
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