发动机系统可靠性分析与评估  

Reliability Analysis and Evaluation of Engine Systems

作　　者：徐桂红[1] 李小金[1] 刘兴华[1] 安金兵[2] 

机构地区：[1]北京理工大学发动机实验室,北京100081 [2]北京大学医学部医用理学系生物统计教研室,北京100083

出　　处：《车用发动机》2007年第1期23-26,共4页Vehicle Engine

摘　　要：针对发动机试验昂贵以及试验条件无法真实再现发动机使用环境的情况,提出利用“三包”信息作为评估发动机使用可靠性的数据源。以发动机完整数据服从的NHPP模型为基础,结合“三包”信息普遍存在的删失现象,提出新模型;该模型既适用于完整数据,也适用于删失数据。实例证明,利用该模型计算的参数与实际统计结果的误差小于2%,最后评估得到发动机的可靠性水平。Warranty data is used to evaluate the service reliability of engine to overcome the difficulties coming from the high experiment costs and exact simulation to the real operating environment. A new model has been presented, which is based on NHPP, and considering the censored characteristics of warranty data. The new model is suited to both complete data and censored data, and the accuracy of the new model has been proved by real failure data, the bias between the new model and real statistical result is less than 2%. The reliability level of engine has been gotten by using the new model and real failure data.

关 键 词：质保信息 NHPP模型 删失 误差分析 可靠性分析 可靠性评估 

分 类 号：TB114.3[理学—概率论与数理统计]