退化试验技术在内燃机寿命分析中的应用

Application of Degradation Analysis Technology in Lifetime Analysis of Internal Combustion Engine

B10寿命是评价内燃机可靠性的重要指标之一,而内燃机的B10寿命通常是通过一组关键零部件的B10寿命计算而来。对于系统零部件B10寿命计算而言需要多样本长期的试验数据积累,计算分析相对困难。笔者尝试应用退化试验技术,对内燃机气门间隙的磨损寿命进行分析并验证结果的有效性,为内燃机同类型零部件的B10寿命分析提供了参考。结果表明:退化试验技术可以在较短的时间测试分析出基于内燃机零部件实际磨损的寿命,并利用统计方法分析出该零部件的B10寿命。

B10 lifetime is one of the important indexes to evaluate the reliability of the internal combustion engine, and the B10 lifetime of the internal combustion engine is usually calculated by the B10 lifetime of a group of key components. For the life calculation of system components B10, it needs the accumulation of long-term test data of multiple samples, and the calculation and analysis are relatively difficult. The author tries to apply degradation test technology to analyze the wear life of the valve clearance of the internal combustion engine and verify the effectiveness of the results, which provides a reference for the B10 lifetime analysis of the same type of parts of the internal combustion engine. The results show that the degradation test technology can test and analyze the actual wear life of internal combustion engine components in a short time, and analyze the B10 lifetime of the components by statistical methods.