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故障现象一辆累计行驶里程约为30万km的苏州金龙KLQ6125B1型客车(配置玉柴YC6L330-30发动机),驾驶人反映,车辆在行驶途中机油报警灯点亮。停车检查发现,机油从机油尺口喷出,机油尺被冲出,估计已损耗不少机油,当时没有找出故障的具体原因,驾驶人只好打电话求救于公司维修厂。故障诊断维修厂派出人员带机油到达事故现场,首先检查发动机的机油量,发现油面低于机油尺的最低极限;再进行仔细检查发现,发动机曲轴箱通风管弯折挂在柴油细滤器旁的支架上,判断为曲轴箱通风管弯折是造成曲轴内压力升高导致机油从机油尺口喷出的主要原因。校正通风管,
Fault phenomenon A cumulative mileage of about 300000 km Suzhou Jinlong KLQ6125B1 bus (configuration Yuchai YC6L330-30 engine), the driver reflects the vehicle in the middle of running oil alarm light. Parking inspection found that the oil spit from the oil spigot, oil ruler was washed out, it is estimated that a lot of oil wasted, did not find the specific cause of the malfunction, the driver had no choice but to call for help in the company maintenance plant. Troubleshooting repair plant dispatched staff to take the oil to the scene of the accident, first check the engine oil quantity and found that the oil level below the minimum limit of the oil dipstick; then a careful examination found that the engine crankcase ventilation tube bending hanging next to the diesel fine filter Bracket, it is determined that the crankcase ventilation tube bending is caused by increased pressure within the crankshaft leading to the main reason for the oil spout from the oil feet. Calibrate the ventilation pipe,