2023年3月1日 · Three new system loss correction methodologies using measured PSD were developed and compared with the existing regulatory method using certification-like nvPM data reported by the Swiss and European nvPM reference systems for thirty-two civil turbofan engines representative of the current fleet.

实验验证了不同加热温度和气流速率下,由联合技术研究中心(UTRC)模型计算的nvPM贯穿效率的准确性。 额外的温度校准实验进行了空气和炉温之间的偏差校正。

2020年7月1日 · 摘要 国际民航组织针对飞机涡轮发动机的非挥发性颗粒物 (nvPM) 的排放认证制定了新的监管标准。 非挥发性微粒物质排放监管标准的采用需要开发标准化的采样和测量方法以及严格的测试。

2019年3月5日 · We examined the toxicity of non-volatile PM (nvPM) emissions from a CFM56-7B26 turbofan, the world’s most used aircraft turbine using an unprecedented exposure setup.

2024年12月1日 · In nvPM sampling and measurement systems for large aviation engines (thrust ≥26.7 kN), the transport of nvPM is significantly influenced by intricate mechanisms, resulting in particle size-dependent losses.

Aircraft Gas Turbine nvPM mass & number measurements passed into international regulation (Feb 2016) •Multiple emissions certification quality tests been conducted by reference systems & engine manufacturers •nvPM mass and number reproducibility typically within ±25% •Mass LOQ at ~5 μg/m3 equivalent to ~50 μg/m3 at engine exit

2020年7月1日 · Comparison of three reference systems for measuring aircraft engine nvPM emissions. The nvPM number emission index was generally within 15% of the average value. The nvPM mass emission index was generally within 30% of the average value. Mass-based emissions exhibited high variability towards the instrument limit of detection.

2024年6月10日 · volatile particulate matter (nvPM) mass and number emissions. Although these regulations do not mandate measuring particle size distribution (PSD), understanding PSDs is vital for assessing the environmental impacts of aviation nvPM. This study introduces a comprehensive data set detailing PSD characteristics of 42 engines

regulation of non-volatile Particulate Matter (nvPM), towards understanding its current uncertainties and hence potential for improvement moving forwards. Civil Aviation nvPM largely consists of carbonaceous Ultra Fine Particles (UFP), with a …

2024年6月10日 · Concerns about civil aviation’s air quality and environmental impacts have led to recent regulations on nonvolatile particulate matter (nvPM) mass and number emissions. Although these regulations do not mandate measuring particle size distribution (PSD), understanding PSDs is vital for assessing the environmental impacts of aviation nvPM.