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      KCI등재 SCIE SCOPUS

      COOLING EFFECT OF METHANOL ON AN N-HEPTANE HCCI ENGINE USING A DUAL FUEL SYSTEM

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      https://www.riss.kr/link?id=A104637216

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      다국어 초록 (Multilingual Abstract)

      Homogeneous charge compression ignition (HCCI) engines have the potential to raise the efficiency of reciprocating engines during partial load operation. However, the performance of the HCCI engine at high loads is restricted by severe knocking, which...

      Homogeneous charge compression ignition (HCCI) engines have the potential to raise the efficiency of reciprocating engines during partial load operation. However, the performance of the HCCI engine at high loads is restricted by severe knocking, which can be observed by the excessive pressure rise rate. This is due to the rapid combustion process occurring inside the cylinder, which does not follow the flame propagation that is seen in conventional engines. In this study, a low compression ratio of 9.5:1 for a gasoline engine was converted to operate in HCCI mode with the goal being to expand the stable operating region at high loads. Initially, pure n-heptane was used as the fuel at equivalence ratios of 0.30 to 0.58 with elevated intake charge temperatures of 180 and 90 ºC, respectively. The n-heptane HCCI engine could reach a maximum performance at an indicated mean effective pressure (IMEP) of 0.38 MPa, which was larger than the performance found in the literature. To reach an even higher performance, a dual-fuel system was exploited. Methanol, as an anti-detonant additive, was introduced into the intake stream with various amounts of n-heptane at fixed equivalence ratios in the range of 0.42 to 0.52. It was found that the methanol addition cooled the mixture down prior to combustion and resulted in an increased coefficient of variation (COV). In order to maintain stable combustion and keep the pressure rise rate below the limit, the intake charge temperature should be increased. Introduction of 90% and 95% (vol/vol) hydrous methanol showed a similar trend but a lower thermal conversion efficiency and IMEP value. Therefore, a dual fuel HCCI engine could maintain a high thermal conversion efficiency across a wide load and enhance a 5% larger load compared to a pure n-heptane-fuelled HCCI engine. The hydrocarbon (HC) and carbon monoxide (CO) emissions were lower than 800 ppm and 0.10%, respectively. They were less at higher loads. The nitrogen oxides (NOx) emissions were below 12 ppm and were found to increase sharply at higher loads to a maximum of 23 ppm.

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      참고문헌 (Reference)

      1 Yao, M., "Study on the controlling strategies ofhomogeneous charge compression ignition combustionwith fuel of dimethyl ether and methanol" 149 : 261-270, 2007

      2 Shi, L., "Study of low emission homogeneous charge compression ignition (HCCI) engine using combined internal and external exhaust gas recirculation (EGR)" 31 : 2665-2676, 2006

      3 Miller Jothi, N. K., "LPG fueled diesel engine using diethyl etherwith exhaust gas recirculation" 47 : 450-457, 2008

      4 Nwafor, O., "Knock characteristics of dual-fuel combustion in diesel engines using natural gas as primary fuel" 27 : 375-382, 2002

      5 Anderlohr, J. M., "Influence of EGR compounds on the oxidation of an HCCI-diesel surrogate" 32 : 2851-2859, 2009

      6 Lü, X., "Experimental study on the cycle-by-cycle variations of homogeneous charge compression ignition combustion using primary reference fuels and their mixtures" 221 : 859-866, 2007

      7 Lü, X., "Experimental study on the auto-ignition and combustion characteristics in the homogeneous charge compression ignition (HCCI) combustion operation with ethanol/n-heptane blend fuels by port injection" 85 (85): 2622-2631, 2006

      8 Miguel, T. G., "Experimental study of the performances of a modified diesel engine operating in homogeneous charge compression ignition (HCCI) combustion mode versus the original diesel combustion mode" 34 (34): 159-171, 2009

      9 Lü, X., "Experimental study and chemical analysis of nheptanehomogeneous charge compression ignitioncombustion with port injection of reaction inhibitors" 149 : 261-270, 2007

      10 J. W. CHUNG, "Effects of the Fuel Injection Ratio on the Emission and Combustion Performances of the Partially Premixed Charge Compression Ignition Combustion Engine Applied with the Split Injection Method" 한국자동차공학회 9 (9): 1-8, 2008

      1 Yao, M., "Study on the controlling strategies ofhomogeneous charge compression ignition combustionwith fuel of dimethyl ether and methanol" 149 : 261-270, 2007

      2 Shi, L., "Study of low emission homogeneous charge compression ignition (HCCI) engine using combined internal and external exhaust gas recirculation (EGR)" 31 : 2665-2676, 2006

      3 Miller Jothi, N. K., "LPG fueled diesel engine using diethyl etherwith exhaust gas recirculation" 47 : 450-457, 2008

      4 Nwafor, O., "Knock characteristics of dual-fuel combustion in diesel engines using natural gas as primary fuel" 27 : 375-382, 2002

      5 Anderlohr, J. M., "Influence of EGR compounds on the oxidation of an HCCI-diesel surrogate" 32 : 2851-2859, 2009

      6 Lü, X., "Experimental study on the cycle-by-cycle variations of homogeneous charge compression ignition combustion using primary reference fuels and their mixtures" 221 : 859-866, 2007

      7 Lü, X., "Experimental study on the auto-ignition and combustion characteristics in the homogeneous charge compression ignition (HCCI) combustion operation with ethanol/n-heptane blend fuels by port injection" 85 (85): 2622-2631, 2006

      8 Miguel, T. G., "Experimental study of the performances of a modified diesel engine operating in homogeneous charge compression ignition (HCCI) combustion mode versus the original diesel combustion mode" 34 (34): 159-171, 2009

      9 Lü, X., "Experimental study and chemical analysis of nheptanehomogeneous charge compression ignitioncombustion with port injection of reaction inhibitors" 149 : 261-270, 2007

      10 J. W. CHUNG, "Effects of the Fuel Injection Ratio on the Emission and Combustion Performances of the Partially Premixed Charge Compression Ignition Combustion Engine Applied with the Split Injection Method" 한국자동차공학회 9 (9): 1-8, 2008

      11 Megaritis, A., "Effect of water blending on bioethanol HCCI combustion with forced induction and residual gas trapping" 32 : 2396-2400, 2006

      12 Megaritis, A., "Effect of inlet valve timing and water blending on bioethanol HCCI combustion using forced induction and residual gas trapping" 87 : 732-739, 2008

      13 Maroteaux, F., "Development of a reduced n-heptane oxidation mechanism for HCCI combustion modeling" 146 (146): 246-267, 2006

      14 Sjoberg, M., "Comparing late-cycle autoignition stability for single- and two-stage ignition fuels in HCCI engines" 31 : 2895-2902, 2007

      15 Mattavi, J. N., "Combustion Modeling in Reciprocating Engines" Plenum 1980

      16 Yamada, H., "Chemical mechanistic analysis of additive effects in homogeneous charge compression ignition of dimethyl ether" 30 : 2773-2780, 2005

      17 Zheng, Z., "Charge stratification to control HCCI: Experiments and CFD modeling with nheptane as fuel" 88 : 354-365, 2009

      18 Qian, Z., "Characteristics of HCCI engine operation for additives, EGR, and intake charge temperature while using iso-octane as a fuel" II : 252-258, 2006

      19 Yap, D., "An investigation into propane homogeneous charge compression ignition (HCCI) engine operation with residual gas trapping" 84 : 2372-2379, 2005

      20 Ma, J., "An experimental study of HCCI-DI combustion and emissions in a diesel engine with dual fuel" 47 : 1235-1242, 2008

      21 Machrafi, H., "A parametric study on the emissions from an HCCI alternative combustion engine resulting from the autoignition of primary reference fuels" 85 : 755-764, 2008

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      학술지 이력

      학술지 이력
      연월일 이력구분 이력상세 등재구분
      2023 평가예정 해외DB학술지평가 신청대상 (해외등재 학술지 평가)
      2020-01-01 평가 등재학술지 유지 (해외등재 학술지 평가) KCI등재
      2011-01-01 평가 등재학술지 유지 (등재유지) KCI등재
      2009-01-01 평가 등재학술지 유지 (등재유지) KCI등재
      2006-01-01 평가 등재학술지 선정 (등재후보2차) KCI등재
      2005-06-10 학술지명변경 한글명 : 한국자동차공학회 영문논문집 -> International Journal of Automotive Technology
      외국어명 : International Journal of Automotive Tech -> International Journal of Automotive Technology
      KCI등재후보
      2005-01-01 평가 등재후보 1차 PASS (등재후보1차) KCI등재후보
      2004-01-01 평가 SCIE 등재 (신규평가) KCI등재후보
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      학술지 인용정보
      기준연도 WOS-KCI 통합IF(2년) KCIF(2년) KCIF(3년)
      2016 1.14 0.53 0.85
      KCIF(4년) KCIF(5년) 중심성지수(3년) 즉시성지수
      0.71 0.62 0.534 0.03
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