CAJ | 학술논문

某8V型柴油机在耐久性台架考核试验中发生严重故障，通过对整机进行拆检分析，初步认为该柴油机在工作过程中存在冷却不足和过热现象。为查明故障原因，结合该柴油机结构和试验台架布置情况，建立以“柴油机过热”为顶事件的故障树，并进行逐项排查分析，最终锁定柴油机故障主要是由于试验设备冷却系统的膨胀水箱蒸汽阀失效所致，并采取必要的解决措施。试验证明，故障机理明确，解决措施有效。
모8V형시유궤재내구성태가고핵시험중발생엄중고장，통과대정궤진행탁검분석，초보인위해시유궤재공작과정중존재냉각불족화과열현상。위사명고장원인，결합해시유궤결구화시험태가포치정황，건립이“시유궤과열”위정사건적고장수，병진행축항배사분석，최종쇄정시유궤고장주요시유우시험설비냉각계통적팽창수상증기벌실효소치，병채취필요적해결조시。시험증명，고장궤리명학，해결조시유효。
A serious malfunction occured in durability bench assessment test of a 8V diesel engine.Based on the analysis of com-plete dismantling ,it’ s suspected that there is insufficient cooling and overheating phenomenon in the diesel working process .To identify the cause of the malfunction ,establish the fault tree with “engine overheating” as the top event which combined with the structure of the diesel engine and the test bench arrangement to itemized investigation and analysis .Ultimately,confirming diesel ’ s malfunction is mainly due to failure of the steam valve that belongs to the expansion tank of test cooling system .The test proved that the failure phenomenon is obvious ,and solutions are effective with clear mechanism .