| 低温对涡轴发动机起动性能影响的试验与分析 |
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| 引用本文： | 刘伟,黄开明,王旭,黄兴,贾琳渊. 低温对涡轴发动机起动性能影响的试验与分析[J]. 航空动力学报, 2019, 34(6): 1282-1289. DOI: 10.13224/j.cnki.jasp.2019.06.011 |
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| 作者姓名： | 刘伟 黄开明 王旭 黄兴 贾琳渊 |
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| 作者单位： | 中国航空发动机集团有限公司湖南动力机械研究所,湖南株洲,412002;西北工业大学动力与能源学院,西安,712002 |
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| 摘 要： | 为研究低温对涡轴发动机起动性能的影响,对国军标的适用与裁剪进行了讨论,开展了低温起动试验,试验以滑油箱内的滑油温度达到-34 ℃算起,冷浸4 h后进行起动,分析了低温起动过程的阻力矩、剩余扭矩、点火性能和温升效应对起动性能的影响。结果表明:-34 ℃条件下的初始阻力矩是25 ℃条件下的2.25倍,至点火转速附件阻力矩降低为1.53倍；温度越低,点火边界对应的索尔太平均直径(SMD)越小,燃烧室点火边界越窄；温升效应对低温起动性能的影响显著,考虑温升效应的起动时间延长约25%。热空气加温和起动滑油断油可以降低起动初始阻力矩,改善点火性能,从而提高了低温起动性能。研究结论对同类发动机开展低温起动试验、起动供油规律优化及相关研究提供了参考。
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| 关 键 词： | 涡轴发动机 低温起动试验 起动性能 阻力矩 点火性能 温升效应 |
| 收稿时间： | 2018-08-08 |
Test and analysis on influences of low temperature on starting performance of turboshaft engine |
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| Abstract: | 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. |
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| Keywords: | turboshaft engine low temperature starting test starting performance resistance torque ignition performance warm-up effect |
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