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作 者:高占斌 杨捷波 蔡浩 李品芳[1,2] 郑先雷 张富忠 GAO Zhanbin;YANG Jiebo;CAI Hao;LI Pingfang;ZHENG Xianlei;ZHANG Fuzhong(Marine Engineering College,Jimei University,Xiamen 361021,Fujian,China;Fujian Provincial Key Laboratory of Naval Architecture and Ocean Engineering,Xiamen 361021,Fujian,China;CSSC Zhenjiang Co.,Ltd.,Zhenjiang 212002,Jiangsu,China;Xiamen Construction and Development Ship Trading Co.,Ltd.,Xiamen 361021,Fujian,China)
机构地区:[1]集美大学轮机工程学院,福建厦门361021 [2]福建省船舶与海洋工程重点实验室,福建厦门361021 [3]中船动力镇江有限公司,江苏镇江212002 [4]厦门建发船舶贸易有限公司,福建厦门361021
出 处:《船舶工程》2022年第6期65-70,133,共7页Ship Engineering
基 金:福建省自然科学基金项目(2021J01849);福建省教育厅资助项目(JT180270);福建省自然基金项目(2020J01690)。
摘 要:为探索掺烧生物柴油结合米勒循环技术对柴油机燃烧及排放性能的影响,基于TBD234V6型柴油机,运用AVL-fire软件建立仿真模型,选取柴油机在75%中高负荷运行时,在M0、M20、M40、M50、M60及M70共6组不同米勒度,10%、20%、30%和40%共4组不同生物柴油掺混比下进行仿真分析。结果表明:相同米勒度下,随着掺混比增大,爆压明显降低,缸温下降,CO排放量明显降低,NO排放上升,SOOT排放量下降明显;B40、M0时,相比原机,缸内最高燃烧压力下降16.3%,缸内最高温度下降242.6 K,CO排放量降低34.2%,NO排放量上升35.7%,SOOT排放量降低92.8%。在相同掺混比下,米勒度在M0~M50时,随着米勒度增大,爆压升高,缸温逐渐下降但不明显,CO排放降低,NO排放呈先增大后减小的趋势,SOOT排放下降;米勒度在M50~M70时,随着米勒度增大,爆压降低,缸温降幅较小,CO排放上升,NO排放降低,Soot排放升高。因此,选用适当的掺混比和米勒度,该技术能较好的降低NO排放,同时对SOOT和CO生成也有较好的抑制效果,且柴油机动力性有小幅提升。研究结果可为生物柴油的实际应用提供一种解决方案。In order to explore the influences of blended biodiesel combined with Miller cycle technology on diesel engine combustion and emission performance,based on TBD234V6 diesel engine,AVL-fire software is used to establish a simulation model,and when the diesel engine is running at 75% medium and high load,6groups of different miller degrees of M0,M20,M40,M50,M60 and M70,and 4 groups of different biodiesel blending ratios of 10%,20%,30% and 40%,the simulation analysis are carried out.The results show that under the same Miller degree,with the blending ratio increasing,the explosion pressure is significantly reduced,the cylinder temperature is reduced,the CO emissions are significantly reduced,the NO emissions are increased,and the SOOT emissions are significantly reduced.For B40 and M0,compared with the original engine,the maximum combustion pressure in the cylinder is reduced by 16.3%.The maximum temperature drops by 242.6 K,CO emissions is decreased by 34.2%,NO emissions is increased by 35.7%,and SOOT emissions is decreased by 92.8%.Under the same blending ratio,when the Miller degree is between M0 and M50,as the Miller degree increasing,the explosion pressure increases,the cylinder temperature gradually decreases but not significantly,the CO emission decreases,and the NO emission increases first and then decreases.When the Miller degree is between M50 and M70,as the Miller degree increasing,the explosion pressure decreases,the cylinder temperature decreases less,the CO emission increases,the NO emission decreases,and the SOOT emission increases.Therefore,by selecting an appropriate blending ratio and Miller degree,the technology can better reduce NO emissions,and at the same time,have a better suppression effect on SOOT and CO generation,and the diesel engine’s power performance is slightly improved.The research results can provide a solution for the practical application of biodiesel.
分 类 号:U664.121[交通运输工程—船舶及航道工程] TK421.26[交通运输工程—船舶与海洋工程]
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