Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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An Experiment Study on the Combustion Characteristics with BD20 according to Ultrasonic Energy Irradiation Duration and Injection Delay in a Diesel Engine

초음파 에너지 조사 시간과 분사지연에 따른 BD20의 디젤기관 연소특성에 관한 실험 연구

  • Im, Seok-Yeon (Graduate School of Mechanical Engineering, BK21 Mechatronics Group, Chungnam National University) ;
  • Lee, Ho-Gil (Korea Automotive Technology Institute) ;
  • Ryu, Jeong-In (Department of Mechanical Engineering, BK21 Mechatronics Group, Chungnam National University)
  • 임석연 (충남대학교 대학원 기계공학과, BK21 메카트로닉스사업단) ;
  • 이호길 (자동차부품연구원) ;
  • 류정인 (충남대학교 기계공학과, BK21 메카트로닉스사업단)
  • Published : 2008.07.01
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Abstract

An object of this study is to understand the correlation between the characteristics of an engine performance and combustion characteristics, applying BD20 fuel reformed by ultrasonic energy irradiation to diesel engines. Before conducting the main experiment, an experiment was performed to determine the optimum injection timimg of reformed BD20 by ultrasonic energy irradiation. To control the duration of the ultrasonic energy irradiation, the capacity of an ultrasonic energy fuel supply system was tested with 550cc and 1100cc chambers. As the result of the analysis of the regular BD20 and reformed BD20 by ultrasonic energy irradiation, the BSFC and the Power of the reformed BD20 was improved 3% and 6%, respectively compared to those of non-irradiated BD20. When the fuel injection timing was delayed by $5^{\circ}$, the engine power was improved by 3%, and the BSFC was improved by 2%. The maximum cylinder pressure of reformed BD20 was improved by a maximum of 6% in comparison to that of regular BD20, and demonstrated a synergistic effect of 3% by delaying the injection timing $5^{\circ}$.

Keywords

References

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