| 摘要:针对某型ME﹣C柴油机缸盖抬升故障，对拆检异物进行了材料理化检测，对故障现象及机理进行了分析。分析结果表明：造成柴油机缸盖抬升故障的直接原因是系统清洁问题导致的先导阀卡滞，造成燃油异常喷射，排气阀动作异常，致使缸内压力过高，缸盖抬升。而先导阀卡滞时， ECS系统FIVA安全控制策略(强制排气阀开启)失效。 |
| 关键词: 柴油机, 缸盖, 抬升, 故障 |
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| Analysis of Diesel Engine Cylinder Head Uplifted Fault |
| Xia Qian,Zhu Jun,Liu Fenghua |
| China Shipbuilding Power Engineering Institute Co. , Ltd. , Shanghai 200129;Hudong Heavy Machinery Co. , Ltd. , Shanghai 200129 |
| Abstract:Fault phenomenon analysis, physical and chemical analysis of dismantled foreign body and failure mechanism analysis were done for a certain type of ME﹣C diesel engine’ s cylinder head uplifted fault. The results showed that the failure was due to jammed FIVA pilot valve caused by bad cleaning of system, which resulted in abnormal injection and exhaust timing, and led to extremely high in﹣cylinder
pressure and the cylinder head was uplifted. When pilot valve was jammed, ECS system FIVA safety con﹣trolling strategy (exhaust valve forced opening) failure occurred. |
| Key words: diesel engine, cylinder head uplifted failure |
