in the combustion chamber, quick exhaust valve can appear sometimes burned, is this why? What is the cause of the happen? Just follow below small make up together and see it.

when into the combustion chamber of the oil mixed with burning impurity particles, the impurity particles with exhaust cylinder, in the process of discharge will be a chance in the exhaust valve closed stuck resistance in the exhaust valve and valve seat sealing surface. Cause the exhaust valve cannot be completely shut down, how big is the diameter of the pellet impurity in this stuck, big of Industrial Valves's opening. Although can through the injector orifice into the combustion chamber of the impurity particles are smaller, but in the mixed fuel combustion gas explosion, the explosion of the combustion chamber pressure is high, the tiny air valve opening can also cause high temperature and high pressure combustion gas channeling out. This time through the combustion gas temperature is very high, instantaneous peak of close to 2000 ℃, far higher than in the exhaust stroke through the exhaust valve sealing surface of the exhaust gas temperature. Exhaust valve sealing surface of the material can withstand normal exhaust fumes scour, but cannot afford such a high pressure and high temperature combustion gas flushing, a short period of time can cause burning of the exhaust valve. Especially valve is stuck in heavy oil of alumina and silica these extremely hard particles, at the same time of exhaust Industrial Valves closed due to dense, common exhaust valve seal cone in the working temperature is not high hardness, deposition of hard particles combustion products under the impact of the closing valve, still can make particles embedded sealing surface, and under the high temperature gas scour and ablation in pit, pit throughout the sealing surface formation and burning loss of leak valve after

at the above content, believe everybody already knows the quick exhaust valve burning.

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