Targeting the influencing factors such as starting speed

fuel temperature and ignition energy

an experimental research on the cold start performance of aviation kerosene engine was carried out on a single-cylinder testing machine with a displacement of 650 mL. The results showed that with the increase of the starting speed

the starting time became shorter but then longer

the starting time was the shortest when the starting speed was 1 200 r/min. The rise of the fuel temperature improved the cold starting performance and combustion characteristics. Under the given test conditions

the engine can be successfully started when the fuel temperature was 50 ℃. Increasing ignition energy had a positive effect on the formation of the fire core and the flame propagation

which can significantly shorten the starting time

but when the ignition energy increased to 75 mJ

the improvement effect was not obvious.