李小彪,马征,邱续茂,谷雪花.航空发动机高原起动成功率提高措施[J].航空发动机,2019,45(4):75-78
航空发动机高原起动成功率提高措施
Improvement Measures of Success Starting Rate of Aeroengine at Plateau area
  
DOI:
中文关键词:  航空发动机  高原起动  涡轮起动机功率  液压卸载  供油量调整
英文关键词:aeroengine  plateau starting  turbo starter power  hydraulic pressure unloading  fuel supply adjustment
基金项目:航空动力基础研究项目资助
作者单位E-mail
李小彪,马征,邱续茂,谷雪花 中国航发沈阳发动机研究所沈阳110015 xiaobiaoli1987@163.com 
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中文摘要:
      针对某型航空发动机在高原地区起动成功率偏低的问题,基于发动机起动工作原理,分析了起动失速、转速悬挂、排气 温度超温等失败现象,得出失败是由剩余功率减小所致,制定了通过优化调整供油钉使发动机达到最佳油气比的调整方案,并采取 增大涡轮起动机输出功率、卸载液压、优化调整供油量等3 项措施。同时进行外场试车验证,判读飞参,对比采取措施前、后的起动 数据。结果表明:采用调整方案后使发动机高原起动成功率提升30%,保证了发动机的工作性能,满足了用户的使用要求。
英文摘要:
      In order to solve the problem of low starting success rate of an aeroengine at plateau area袁the failure phenomena such as starting stall,rotating speed suspension and exhaust over temperature were analyzed based on the working principle of engine starting. It was concluded that the failure was caused by the reduction of residual power. The adjustment scheme was worked out by optimizing the fuel supply nail to achieve the best oil / gas ratio of the engine,and three measures were taken to increase the output power of the turbo starter, unload the hydraulic pressure and optimize the fuel supply. At the same time,the field test verification was carried out,the flight parameters were read,and the starting data with and without the measures were compared. The results show that the success rate of engine plateau starting is increased by 30% after the adjustment scheme is adopted,which ensures the working performance of the engine and meets the requirements of the users.
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