在使用分割注射策略的氨-生物柴油燃料RCCI燃烧发动机上进行了调查
Elumalai Ramachandran1, Ravi Krishnaiah1, Elumalai Perumal Venkatesan2
1School of Mechanical Engineering, VIT University, Vellore 632014, India.
ACS omega
|September 4, 2023
概括
使用氨和生物柴油的反应控制压缩点火 (RCCI) 显示出减少排放的前景. 45%的生物柴油分割注射策略显著提高了效率并减少了污染物,尽管NOx排放量增加了.
科学领域:
- 内部燃烧发动机 内部燃烧发动机
- 可持续的燃料 可持续的燃料
- 排放控制技术排放控制技术
背景情况:
- 先进的燃烧策略对于减少压缩点火发动机的排放至关重要.
- 反应式控制压缩点火 (RCCI) 为更清洁的燃烧提供了更广泛的操作范围.
- 氨和生物柴油被探索为环保发动机运行的替代燃料.
研究的目的:
- 调查生物柴油分注策略对使用氨和生物柴油的RCCI燃烧的影响.
- 评估不同生物柴油分比对发动机性能和排放的影响.
- 为了比较氨/生物柴油RCCI的分注与单注注注射策略.
主要方法:
- 使用多路注射氨 (低反应性燃料) 和直接注射生物柴油 (高反应性燃料) 实施RCCI.
- 对生物柴油 (预注和主注) 在40:60的能量比率下进行分割注射策略的检查.
- 在不同负载条件下比较性能指标 (压力,热释放,效率,BSEC) 和排放 (HC,CO,烟雾,NOx).
主要成果:
- 充满负载时45%的生物柴油分割比率优化了气内压力和释放热量的速度,使峰值发生向TDC.
- 与单次注入相比,制动热效率 (BTE) 增加了12.33%,制动特定能耗 (BSEC) 减少了19.31%.
- 观察到HC (34.21%),CO (39.13%) 和烟雾不透明度 (33.89%) 的显著降低,而NOx增加了36.06%.
结论:
- 在RCCI中使用氨的生物柴油分割注射为提高发动机效率和减少特定污染物的可行策略.
- 优化生物柴油分割比率对于最大限度地提高性能效益和最大限度地减少不良排放至关重要.
- 可能需要进一步的研究,以减轻NOx排放量的增加,同时保持效率的提高.
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