掺氢对乙醇喷雾点火和燃烧特性的影响研究
Effects of Hydrogen Enrichment on Ignition and Combustion Characteristics of Ethanol Spray
基于定容燃烧装置探究了在不同点火时刻、喷射压力和氢气掺混当量比下，乙醇喷雾非均质燃料的点火和燃烧特性。实验工况为353 K，标准大气压，点火时刻（喷射开始后0-50 ms）、喷射压力（5、15、25MPa）和氢气预混当量比（0.05、0.1、0.2）。结果显示，乙醇直喷联合掺氢能够在超稀燃（全局当量比0.15，67%乙醇/33%氢）工况下实现点火。此外，随着点火时刻的延迟，点火成功率先上升后下降；随着喷射压力和氢比例的增加，点火成功率提高。然而，…查看全部>>
Based on the constant volume combustionvessel, the ignition and combustion characteristics of ethanol spray combustion at different ignition timings, injection pressures and hydrogen equivalence ratios were investigated. The experimental conditions are 353 K, standard atmospheric pressure, ignition timing (0-50 ms afterstartof injection), injection pressure (5, 15, 25 MPa), and hydrogen premixed equivalence ratio (0.05, 0.1, 0.2). The results show that ethan…查看全部>>
葛睿涵;胡二江;矫健;黄佐华;
TK4
hydrogen constant volume vessel inhomogeneous combustion ignition characteristics
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