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Combustion Optimization of Diesel 2.0 Liter Class Engine with 8-hole Injector Nozzle (8홀 노즐을 적용한 2리터 급 디젤 엔진 연소 최적화)

  • Kwon, Soon-Hyuk;Kim, Min-Su;Choi, Min-Seon;Cho, Sung-Hwan
    • Transactions of the Korean Society of Automotive Engineers
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    • v.16 no.3
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    • pp.73-79
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    • 2008
  • Atomization speed of diesel fuel injected from 8-hole nozzle is faster than that of 7-hole nozzle because the hole diameter of 8-hole nozzle is smaller than that of 7-hole nozzle. But both insufficient distance between the fuel sprays and short penetration of injected sprays through 8-hole nozzle hole cause many harmful effects on combustion. In this study, we installed the 8-hole injectors to diesel 2.0 liter class engine, and optimized in-cylinder swirl and penetration via selecting and matching proper cylinder head and combustion bowl. Through this process, we found out the performance and emission potential of 8-hole nozzle installed engine are better than those of 7-hole nozzle installed one.