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在火花放电中从电极释放的原子的检测使用激光诱导的光
Kailun Zhang1, Ruike Bi1, Johan Tidholm2
1Division of Combustion Physics, Department of Physics, Lund University, Lund, Sweden.
Applied spectroscopy
|September 28, 2024
概括
激光诱导光 (LIF) 提供了一种新的方法来研究发动机中的火花塞电极磨损. 该方法通过分析点火过程中的磨损,有助于提高发动机效率和与可再生燃料的兼容性.
科学领域:
- 工程 工程师 工程师 工程师
- 材料科学 材料科学 材料科学
- 燃烧科学 燃烧科学
背景情况:
- 发动机需要提高效率和可再生燃料的兼容性,以实现碳中和.
- 火花塞的电极磨损是点燃新型燃料和精益混合物的重大挑战.
- 传统的磨损测试耗时;光学诊断提供更快的评估.
研究的目的:
- 介绍使用激光诱导光 (LIF) 的点火栓电极磨损的光学研究的初步步骤.
- 为了确定火花放电中原子的最佳激发路径.
- 建立LIF作为发动机开发的可行的现场诊断工具.
主要方法:
- 研究了火花放电中原子的各种激发路径.
- 确定336.96nm为LIF的最佳激发波长.
- 测量光信号强度与激发能量相关.
主要成果:
- 在336.96 nm的最佳激发产生了338.75和353.58 nm之间的排放.
- 这种方法最大限度地减少了N2等离子体排放的干扰.
- 在光信号和高达400μJ的激发能量之间观察到线性关系.
结论:
- 激光诱导光 (LIF) 是一种有前途的技术,用于在现场诊断点火塞电极磨损.
- LIF可以帮助开发与可持续燃料相容的更高效的发动机.
- 这种方法为传统的长期磨损测试提供了更快的替代方案.
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