CAJ | 학술논문

以某重型商用柴油机为例，以大量用户维修数据为信息源，分析了衡量柴油机可靠性的典型参数，包括里程、失效数、失效部件、失效季节以及平均无故障间隔里程等，评估了发动机的可靠性及其影响因素。结果表明，降低大载荷周期性运动件的失效数是改善商用柴油发动机可靠性的关键。研究还发现，该型柴油机的平均无故障里程较高，失效数较低，早期失效率虽然高于寿命期内的平均失效率，但相应的故障性质比较轻微，说明该型柴油机的可靠性已经具有较高水平。
이모중형상용시유궤위례，이대량용호유수수거위신식원，분석료형량시유궤가고성적전형삼수，포괄리정、실효수、실효부건、실효계절이급평균무고장간격리정등，평고료발동궤적가고성급기영향인소。결과표명，강저대재하주기성운동건적실효수시개선상용시유발동궤가고성적관건。연구환발현，해형시유궤적평균무고장리정교고，실효수교저，조기실효솔수연고우수명기내적평균실효솔，단상응적고장성질비교경미，설명해형시유궤적가고성이경구유교고수평。
A certain commercial heavy duty diesel engine was taken as an example to analyze the typical parameters on evaluating the reliability of engines, including mileage, failure times, failure parts, failure season and MKB, which were based on large number of maintenance database from users. The results showed that reducing the failure times of the moving parts under high cyclic load was the key point to im-prove the reliability of commercial diesel engine. Moreover, it was found that this type of diesel engine featured longer MKB and less failure times, and though the earlier failure rate was higher than the average failure rate across the whole service life, and the relative failures were always minor ones, which means this type of diesel engine boast relatively high reliability.