To investigate the influences of low temperature on turboshaft engine starting performance

application and tailoring of national military standard were discussed. Low temperature starting tests were conducted at -34 ℃ based on oil temperature in four-hour cold soak process. The influences of resistance torque

residual torque

ignition performance and warm-up effect on cold starting performance were investigated. Results showed that

initial resistance torque under -34 ℃ was 2.25 times of 25 ℃ and 1.53 times near the ignition. The Sauter mean diameter (SMD) was smaller for ignition boundary in the lower temperature. The influences of warm-up effect on low temperature starting was significant and the start-up time with warm-up was extended by about 25%. Heating up on the engine and cutting off oil lubricating can reduce initial resistance torque and improve the ignition performance

thus improving the low temperature starting performance. The conclusion provides a reference for the low temperature starting test

starting fuel supply control law optimization and research of similar engines.