基于排放光谱的传感器系统将柴油发动机的发动机内燃烧温度与NOx排放相关联
Jürgen Wultschner1,2, Ingo Schmitz1,2, Stephan Révidat3
1Institute of Engineering Thermodynamics, University of Siegen, D-57076 Siegen, Germany.
Sensors (Basel, Switzerland)
|April 27, 2024
概括
研究人员使用最小侵入性排放光谱仪测量了柴油发动机的筒内温度. 他们发现这些温度与排气氧化 (NOx) 度之间存在强烈的相关性,有助于减少污染物.
科学领域:
- 燃烧科学是一种科学.
- 发动机排放 发动机排放
- 频谱学是一种光谱学方法.
背景情况:
- 越来越需要减少来自传统能源技术的污染物.
- 了解燃烧过程中的污染物形成至关重要.
- 柴油发动机是能源和排放的主要来源.
研究的目的:
- 用最小侵入性排放光谱学检查柴油发动机的内温度.
- 为了将气内部的温度与排放的废气排放相关联,特别是NOx.
- 提供有关污染物形成过程的见解.
主要方法:
- 使用一种极少侵入性的排放光谱传感器来测量气内的温度.
- 雇佣了烟尘,作为一个黑色体散热器,发射光.
- 使用修改的普朗克定律函数,用光谱检测和评估发射光.
- 在废气中测量了NOx度.
主要成果:
- 在内测定的温度和测量的NOx度之间显示出良好的相关性.
- 在各种发动机操作点进行了测量.
- 实现了25K和49K之间的标准偏差,用于气内温度测量.
结论:
- 开发的光谱方法有效地估计了柴油发动机的筒内温度.
- 气内的温度是影响NOx形成的重要因素.
- 这种技术有助于了解和潜在地减轻柴油燃烧中的污染物形成.
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