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(一)前言东风4型内燃机车16240Z型柴油机在一些机务段曾多次发生“飞车”事故,给安全行车带来了威胁。据事故统计,“飞车”后往往造成曲轴烧损(甚至报废),轴瓦(主轴瓦、连杆瓦)报废、连杆螺栓报废、气门弯曲等,同时与柴油机相连的前、后牵引通风机也因柴油机“飞车”而打坏。因此,对该型柴油机“飞车”情况进行详细的分析、找出原因,提出消除办法,是很有意义的。
(A) Foreword Dongfeng 4 diesel locomotive 16240Z diesel engine has repeatedly “flying” accidents in some locomotive depots, posing a threat to safe driving. According to the statistics of the accident, after the “speeding car”, the crankshaft is often burned (even scrapped), the bearing pads (main bearing and connecting rod watts) scrapped, the connecting rod bolts scrapped, the valve bent, and the front and rear traction ventilators connected to the diesel engine Broken by the diesel “speed”. Therefore, it is very meaningful to conduct a detailed analysis on the situation of this type of diesel “speeding car” to find out the reasons and put forward the elimination measures.