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2台大修竣工后的康明斯柴油机在试机中均出现冷却水外溢故障。第一台启动后,在机油压力0.4 MPa、水温73℃状态下,当转速达到1100 r/min以上时,水散热器内的冷却水开始高速外溢;第二台在启动一段时间后,在机油压力和水温都正常的情况下,水散热器向外溢水,加速后尤为明显。1.冷却水外溢的原因分析认为,冷却水外溢的原因主要有:由于空压机缸盖、汽缸盖或缸体有裂
2 overhaul after completion of the Cummins diesel engine in the test machine are cooling water overflow fault. After the first start-up, when the oil pressure is 0.4 MPa and the water temperature is 73 ℃, the cooling water in the water radiator starts to overflow at a high speed when the rotation speed reaches 1100 r / min. After the second stage starts for a period of time, Pressure and water temperature are normal circumstances, the water radiator overflow to the outside, especially after acceleration. 1. Cooling water spill analysis of the reasons that the reasons for the spill of cooling water are: air compressor cylinder head, cylinder head or cylinder crack