Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A Study on the Strategy of Fuel Injection Timing according to Application of Exhaust Gas Recirculation for Off-road Engine

배기가스재순환 적용에 따른 Off-road 엔진의 연료 분사 시기 전략에 관한 연구

  • Ha, Hyeongsoo (Emission & F.E. R&D Center, Korea Automotive Technology Institute) ;
  • Shin, Jaesik (Emission & F.E. R&D Center, Korea Automotive Technology Institute) ;
  • Pyo, Sukang (Department of R&D center, Kukje Machinery Company) ;
  • Jung, Haksup (Department of R&D center, Kukje Machinery Company) ;
  • Kang, Jungho (Emission & F.E. R&D Center, Korea Automotive Technology Institute)
  • 하형수 (자동차부품연구원 배기연비성능연구센터) ;
  • 신재식 (자동차부품연구원 배기연비성능연구센터) ;
  • 표수강 (국제종합기계 기술연구소) ;
  • 정학섭 (국제종합기계 기술연구소) ;
  • 강정호 (자동차부품연구원 배기연비성능연구센터)
  • Received : 2016.01.21
  • Accepted : 2016.03.10
  • Published : 2016.07.01
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Abstract

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 %).

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References

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