Journal
ENERGIES
Volume 15, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/en15093246
Keywords
bio-jet fuel; RP-3 jet fuel; thermochemical conversion of triglyceride; aviation piston engine
Categories
Funding
- National Natural Science Foundation of China [31770612]
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Experimental results show that using bio-jet fuel as a substitute for RP-3 jet fuel is feasible, although knock combustion is more likely to occur at large throttle openings, requiring cooling air to reduce the heat generated from spontaneous combustion.
Bio-jet fuels prepared by the thermochemical conversion of triglyceride can be used as complete substitutes of jet fuels. A bio-jet fuel prepared as a substitute of the RP-3 jet fuel and the RP-3 jet fuel itself were, respectively, used to fuel a small aviation piston engine. The characteristic tests of the engine were carried out, and the performances of the power, economy, emissions, and heat release law of the engine fueled with the two fuels were analyzed. The feasibility of the bio-jet fuel as a substitute for the RP-3 jet fuel was proved by the experimental results, which show that when the engine is fueled with the bio-jet fuel, the power and economy performance do not deteriorate; however, the HC emissions increase at small and medium throttle openings, while at large throttle openings, the performances of power and economy decreases, the emissions of HC and NOx increase, and the CO emission decreases. The bio-jet fuel is more prone to spontaneous combustion than the RP-3 jet fuel, so knock combustion would be more likely to occur at large throttle openings, and large cooling air flux is required to cool the cylinder because spontaneous combustion would increase heat release.
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