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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2014.11
- 수록면
- 179 - 182 (4page)
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이 논문의 연구 히스토리 (5)
2015
2014
DNSs of the Ignition of a Lean PRF/Air Mixture under RCCI/SCCI Conditions : A Comparative Study
Minh Bau Luong
,
Kwang Hyeon Yu
,
Chun Sang Yoo
KOSCO SYMPOSIUM 논문집
2014.11
학술대회자료
Effects of the NTC Regime on the Ignition of a Lean n-Heptane/Air Mixture with Temperature and Composition Inhomogeneities
Minh Bau Luong
,
Kwang Hyeon Yu
,
Chun Sang Yoo
KOSCO SYMPOSIUM 논문집
2014.05
학술대회자료
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초록· 키워드
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A comparative DNS study of the ignition characteristics of dual-fueled reactivity controlled compression ignition (RCCI) and stratification charge compression ignition (SCCI) is investigated using a 116-species reduced primary reference fuel (PRF) mechanism. In the RCCI combustion, two PRF fuels (n-heptane and iso-octane) with opposite autoignition characteristics are separatedly supplied and in-cylinder blended such that spatial variations in fuel reactivity, fuel concentration and temperature are achieved. In the SCCI combustion, however, just a single fuel (PRF50) is used such that only fuel concentration and temperature inhomoginieties are obtained. Because three factors, rather than only two as in SCCI combustion, govern the overall RCCI combustion, combustion timing and combustion duration or heat release rate of RCCI combustion are flexibly and effectively controlled. It is found that the overall RCCI combustion occurs much earlier and its combustion duration is longer compared to SCC combustionI. Moreover, the negative temperature coefficient (NTC) has a positive effect on enhancing RCCI combustion by inducing a shorter combustion timing and a longer combustion duration as a result of the occurrence of a predominant low-speed deflagration-combustion mode.
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UCI(KEPA) : I410-ECN-0101-2016-431-000986747