| 摘要:针对 PA6B柴油机进排气阀断裂故障，根据现场勘验情况并结合该柴油机当时的热工参数,建立相应的故障树;对制造质量、装配质量、配气定时、异物进入、热工参数等因素进行逐一排查。结果表明:导致PA6B柴油机进排气阀断裂的原因为喷油器制造质量存在问题。 |
| 关键词: 柴油机 气阀 断裂 喷油器 |
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| Analysis on the Fracture Causes of Intake & Exhaust Valveon PA6B Diesel Engines |
| Zhao Jianping,Dou Zhenhuan,Qin Junhong,Wang Jiangkun |
| Shaanxi Diesel Heavy Industry Co., Ltd., Shaanxi Xingping 713105 |
| Abstract:Aiming at the fracture failure of the intake & exhaust valves on a PA6B diesel engine, based on the on-site inspection results and the thermal parameters at that moment, fault tree was built up. The factors which may cause the failure was investigated, including manufacturing quality, assembly quality, distribution timing, foreign particles entry and the thermal parameters. The results show that the manufactu-ring quality of injector was the reason that caused the fracture of exhaust valve on the PA6B diesel engine. |
| Key words: diesel engine air valve fracture injector |
