• 제목/요약/키워드: HYDSIM

검색결과 1건 처리시간 0.014초

HSDI 디젤엔진의 연소계 최적화 해석기술 개발 (Development of the Optimization Analysis Technology for the Combustion System of a HSDI Diesel Engine)

  • 이제형;이준규
    • 한국자동차공학회논문집
    • /
    • 제14권1호
    • /
    • pp.153-158
    • /
    • 2006
  • To optimize the combustion system in a HSDI diesel engine, a new analysis technology was developed. The in-cylinder 3-D combustion analysis was carried out by the modified KIVA-3V, and the spray characteristics for the high pressure injection system were analyzed by HYDSIM. The combustion design parameters were optimized by coupling the KIVA-3V and the iSIGHT. The optimization procedure consists of 3 steps. The $1^{st}$ step is the sampling method by the Design of Experiment(DOE), the $2^{nd}$ step is the approximation using the Neural Network method, and the $3^{rd}$ step is the optimization using the Genetic Algorithm. The developed procedures have been approved as very effective and reliable, and the computational results agree well with the experimental data. The analysis results show that the optimized combustion system in a HSDI diesel engine is capable of reducing NOx and Soot emissions simultaneously keeping a same level of the fuel consumption(BSFC).