最近,一辆装有玉柴6105柴油机的杭州产崭新大客车进我站修理。驾驶员反映,该车在行驶中,水箱口水“泛泡”外溢,自认为节温器故障,把节温28折了,但情况没有改变,发动机一发动,水箱口就“泛泡”溢水。经试车,情况与驾驶员反映吻合。 用手触摸水箱上、下部,手感水温均匀,说明冷却水在循环,因此,当时不考虑水箱而初步判断为气缸内可燃混合气进水道。缸内可燃气进水道一般有三条通路。一、气缸垫破损引起气、水道相通。二、气缸套上部有裂纹,使缸内可燃气进水道。三、喷 Recently, a new bus with Hangzhou Yuchai 6105 diesel engine into our station repair. The driver said the car was driving, tank saliva “pan bubble” spill, think thermostat failure, the section temperature 28 fold, but the situation has not changed, the engine started, the tank mouth to “pan bubble” overflow. After the test car, the situation is consistent with the driver. Touching the upper and lower parts of the water tank by hand, the water temperature is even, indicating that the cooling water is circulated. Therefore, at that time, it was initially judged that the combustible mixture gas inlet in the cylinder did not consider the water tank. Cylinder gas waterways generally have three access. First, the cylinder pad damage caused by gas, water channels connected. Second, there are cracks in the upper cylinder liner, so that the cylinder can gas into the waterway. Third, spray