对某飞机的发动机舱温超限的故障进行分析,针对发动机舱温超限现象对发动机舱通风冷却系统的进气方式提出了多种方案。通过理论和试验的对比分析,获得了合理的进气方案,解决了发动机舱后段温度超限故障,为发动机舱通风冷却系统设计提供依据。 This paper analyzes the failure of an aircraft overheating engine room temperature and puts forward many proposals for the air intake system of the engine compartment ventilation and cooling system in view of the overheating of the engine compartment temperature. Through the comparison of theory and experiment, a reasonable air intake scheme is obtained, which solves the temperature overrun fault in the rear of the engine compartment and provides the basis for the design of ventilation and cooling system in the engine compartment.