| 某型喷油泵柱塞偶件失效分析 |
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| 引用本文： | 王春文,周科,彭琦,李野,陈明,胡辛阳. 某型喷油泵柱塞偶件失效分析[J]. 内燃机, 2019, 0(1): 22-24 |
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| 作者姓名： | 王春文 周科 彭琦 李野 陈明 胡辛阳 |
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| 作者单位： | 重庆红江机械有限责任公司;船舶与海洋工程动力系统国家工程实验室 |
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| 摘 要： | 通过宏观现象分析、扫描电镜(SEM)形貌分析及EDS分析等分析方法,针对某船柴油机在使用过程中集中出现喷油泵柱塞偶件咬卡失效现象,进行失效分析。分析结果表明,该船柴油机在使用过程中,低压供油油路供油不稳定,造成燃油波动,引起柱塞套第一环槽4.5 mm处出现穴蚀现象,导致柱塞套壁组织脱落堆积,造成柱塞偶件发生咬卡,喷油泵失效。
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| 关 键 词： | 柴油机 喷油泵 柱塞偶件 穴蚀 |
Failure Analysis of Plunger Assembly of Fuel Injection Pump for a Certain Type of Diesel Engine |
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| WANG Chunwen,ZHOU Ke,PENG Qi,LI Ye,CHEN Ming,HU Xinyang. Failure Analysis of Plunger Assembly of Fuel Injection Pump for a Certain Type of Diesel Engine[J]. Internal Combustion Engines, 2019, 0(1): 22-24 |
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| Authors: | WANG Chunwen ZHOU Ke PENG Qi LI Ye CHEN Ming HU Xinyang |
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| Affiliation: | (Chongqing Hongjiang Machinery Co.,Ltd^Chongqing 402162;National Engineering Laboratory for Marine Power System,Chongqing 402162) |
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| Abstract: | This paper concentrates on the failure analysis of plunger assembly sticking of fuel injection pump in the use of a certain type of marine diesel engine by means of macroscopic analysis method,scanning electron microscope(SEM)morphology analysis method as well as EDS analysis method.Analysis results shows in the use of this type of marine diesel engine,cavitation occurred at 4.5 mm of ring groove of plunger barrel due to fuel fluctuation caused by unstable fuel supply at low pressure fuel passage.This caused structure broken off and accumulated on plunger barrel wall,resulting in the sticking of plunger assembly and failure of fuel injection pump. |
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| Keywords: | diesel engine injection pump plunger assembly cavitation |
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