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DME HCCI 운전조건에서 Methanol 분율에 따른 HCCI엔진연소 특성에 관한 수치해석적 연구 (A Computational Study on DME HCCI Combustions Characteristics with Methanol Concentrations)

  • 이효원;임옥택;박규열;조원준;백영순
    • 한국수소및신에너지학회논문집
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    • 제25권1호
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    • pp.79-86
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    • 2014
  • In Dimethyl Ether (DME) indirect production processes, DME have a reforming process to separate Methanol. DME has a high cetane number and Methanol has a high octane number. Each fuel has a different combustion characteristics and reactivity. So, this paper was investigated on the combustion characterisitics of DME and Methanol. Basically, Methanol has a effect of retarding ignition. However, Within 10% of total carbon mole number in DME, Methanol slightly changed the onset timing of Low Temperature Reaction (LTR) with increasing thermal-ignition preparation range. It means that controlling combustion phasing of DME can be possible without eliminated LTR. In case of IMEP, the ranges.