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Improving the energy efficiency of a two-stroke engine with crankcase scavenging for UAVs by implementing an electronic fuel injection system
1
Department of Engines and Hybrid Power Plants, National Technical University “Kharkiv Polytechnic Institute”, Ukraine
2
Internal Combustion Engine, Kharkiv National Automobile and Highway University, Ukraine
These authors had equal contribution to this work
Submission date: 2025-08-19
Final revision date: 2025-09-30
Acceptance date: 2025-10-21
Online publication date: 2025-11-22
Corresponding author
Serhii Kravchenko
Department of Engines and Hybrid Power Plants, National Technical University “Kharkiv Polytechnic Institute”, Kharkiv, Ukraine
Department of Engines and Hybrid Power Plants, National Technical University “Kharkiv Polytechnic Institute”, Kharkiv, Ukraine
KEYWORDS
TOPICS
ABSTRACT
The article considers the use of an electronic fuel injection system as a way to increase the energy efficiency of a two-stroke piston engine with crank-chamber purge for UAVs. An analysis of publications reveals the advantages of injection over carburetor power systems, in particular, increased power, reduced fuel consumption and emissions of harmful substances. An electronic fuel injection system based on a microcontroller electronic control unit with sensors (MAP, TPS, ECT, IAT, CKP) and actuators has been developed, and EFI Studio software has been implemented for system calibration and monitoring. The control algorithm is based on the Alpha-N method taking into account dead time and injection phase shift. A hardware implementation is presented that provides dosing accuracy and flexible control of engine operating modes. The results confirm the practical significance of the technology for increasing the efficiency and environmental friendliness of small UAV engines.
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