基于瞬时转速分析的柴油机气缸压缩性能检测方法  

Detection of In-cylinder Compression Pressure for Diesel Engine Based on Instantaneous Speed Analysis

作　　者：乔新勇[1] 刘春华[2] 刘君[1] 靳莹[1] 

机构地区：[1]装甲兵工程学院机械工程系,北京100072 [2]中国空气动力研究与发展中心,四川绵阳621000

出　　处：《车用发动机》2014年第6期79-83,88,共6页Vehicle Engine

摘　　要：提出了一种利用柴油机倒拖过程瞬时转速分析来检测气缸压缩性能的方法。通过试验同步测量了车辆倒拖过程的曲轴瞬时转速和气缸压缩压力信号,利用径向基神经网络(RBF)模型,建立了瞬时转速与气缸压缩压力的非线性映射关系,实现了由瞬时转速波动特征来间接检测气缸压缩压力,并由此判断气缸的压缩性能。The method of detecting the cylinder compression performance by analyzing the instantaneous speed of dragging diesel engine was put forward .The instantaneous speed of crankshaft and in‐cylinder compression pressure were both measured simultaneously during the dragging process ,the nonlinear mapping relationship between instantaneous speed and cylinder com‐pression pressure was built by using RBF neural network ,the detection of cylinder compression pressure was realized according to the fluctuation of instantaneous speed and thus the cylinder compression performance could be estimated .

关 键 词：柴油机 气缸压力 瞬时转速 RB F神经网络 信号检测 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]