The article investigates the impact of blending small amounts of oxygenated fuels with regular Jet A-1 on the particle concentration in the exhaust gases of a helicopter engine (Allison 250-C20B). The tested oxygenated fuels included an OME3-5 mix and ethanol. OME was added at 5 vol%, and ethanol at 5 and 20 vol%. A Condensation Particle Counter (CPC) was used to measure the soot particles. The results show a tendency toward a reduction in the number of soot particles when oxygenates are blended with Jet A-1.
More details can be found at the following link: https://doi.org/10.1007/s13272-023-00695-6.