以某泵压式供应系统的液体火箭发动机作为研究对象， 进行泄漏故障状态下的模拟， 为提取泄漏故障模式、优化监控参数、泄漏故障检测和诊断奠定了基础。仿真的结果表明， 模型能够较精确实时地仿真泄漏故障 Taking the liquid rocket motor of a pump-pressure supply system as the research object, the simulation of the leakage fault state is established, which lays the foundation for extracting the leakage failure mode, optimizing the monitoring parameters, detecting and diagnosing the leakage fault. The simulation results show that the model can simulate the leakage fault more accurately and in real time