内燃机工程2025，Vol.46Issue(3)：8-14,7.DOI:10.13949/j.cnki.nrjgc.2025.03.002
航空活塞发动机可持续燃料燃烧排放碳烟颗粒微观特性
Microscopic Characteristics of Soot Derived from an Aviation Piston Engine Fueled with Sustainable Aviation Fuel
摘要
Abstract
The microscopic characteristics of soot particles emitted by a piston aircraft engine using 100%hydro-processed esters and fatty acids-sustainable aviation fuel(HEFA-SAF)and conventional jet fuel RP-3 at three operation modes(idle,cruise and takeoff)were analyzed.The results show that the carbon-to-oxygen(C/O)ratios of soot aggregates were observed to be larger under take-off conditions for HEFA-SAF and under idle conditions for RP-3.For both fuels,the reactivity of nanostructures was observed to decrease with increasing engine load.Soot particles derived from HEFA-SAF were observed to possess smaller mean primary particle diameters than those from RP-3 at all load conditions.However,under idle conditions,RP-3 soot particles exhibited relatively lower reactivity,whereas HEFA-SAF soot particles demonstrated even lower reactivity under takeoff conditions.Through experimental data analysis,it is established that the C/O ratio,internal nanostructures,and the degree of graphitization of soot particles exhibited significant coupling relationships with engine loads.Notably,the chemical composition of aviation fuels is demonstrated to show distinct non-linear trends in influencing these critical microstructural parameters.The phenomenon fundamentally originates from the complex synergistic effects between fuel atomization/mixing processes and high-temperature pyrolysis reaction kinetics occurring across different temporal scales.关键词
可持续航空燃料/碳烟颗粒/化学组分/微晶反应性Key words
sustainable aviation fuel(SAF)/soot particle/chemical composition/crystallite reactivity分类
能源与动力引用本文复制引用
曹阳,陈龙飞,胡雪欢,陈晓阳..航空活塞发动机可持续燃料燃烧排放碳烟颗粒微观特性[J].内燃机工程,2025,46(3):8-14,7.基金项目
国家重点研发计划项目(2022YFB2602000) （2022YFB2602000）
国家自然科学基金项目(52306127)National Key Research and Development Program of China(2022YFB2602000) （52306127）
National Natural Science Foundation of China(52306127) （52306127）
