
1. 上海海事大学商船学院
2. 天津理工大学海运学院
Published:2026
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路秀伟, 魏立江, 孙荣康. 船用柴油机条件下重油混合燃料的喷雾与着火特性[J]. 2026, 44(1): 22-31.
路秀伟, 魏立江, 孙荣康. 船用柴油机条件下重油混合燃料的喷雾与着火特性[J]. 2026, 44(1): 22-31. DOI: 10.16236/j.cnki.nrjxb.202601003.
开展了喷油压力、掺混比和环境温度对重油-生物柴油混合燃料的喷雾与着火特性影响的研究,重油-生物柴油的混合燃料中生物柴油体积分数分别为100%、60%、24%和0%.在喷射压力为70 MPa时环境温度对生物柴油掺混比例为0%(H100B0)的贯穿距和喷雾面积的影响最小,对着火延迟影响最大(0.55 ms).混合燃料的热稳定性降低,770 K是混合燃料蒸发的“临界”温度.环境温度相同时,提高生物柴油占比混合燃料的着火延迟缩短、着火点增加且着火位置与喷嘴的距离缩短.生物柴油掺混比例为100%(H0B100)和生物柴油掺混比例为24%(H76B24)的着火延迟受环境温度影响最明显,分别约为6.82%(0.10 ms)和30%(0.73 ms).环境温度从770 K提升至820 K时混合燃料的发光持续期延长,火焰亮度下降速度减慢.混合燃料可以按生物柴油占比降低碳排放比例,这对现有船舶低成本降低碳排放有积极意义.
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