论文部分内容阅读
气阀的撞击和气体压力的冲击均会产生声发射信号,声发射信号的频率范围宽,信息量丰富,在无损检测领域已得到了广泛应用,将声发射传感器引入柴油机排气阀的故障监测诊断中,以WP10.240N型柴油机为研究对象,搭建试验测试平台,模拟3种类型的排气阀故障,通过试验研究了柴油机气阀在不同状态下声发射信号特征,提取了与排气阀故障相关的特征参数,探索了基于声发射信号的柴油机气阀故障诊断的可行性。
The impact of the gas valve and the impact of gas pressure will produce acoustic emission signal, the acoustic emission signal has a wide frequency range and abundant information, and has been widely used in the field of nondestructive testing. The acoustic emission sensor is introduced into the diesel engine exhaust valve fault monitoring In the diagnosis, WP10.240N diesel engine was taken as the research object. The test platform was set up to simulate the three types of exhaust valve failure. The characteristics of the acoustic emission signals of the diesel engine valve under different conditions were tested and the characteristics of the exhaust valve Fault related parameters to explore the feasibility of diesel engine valve fault diagnosis based on acoustic emission signal.