a lot of people at the time of application of trace exhaust valve, trace exhaust valve failure are met, then what causes this situation?

1。 Bad will not only improve the exhaust temperature, combustion will be formed in the combustion chamber carbon deposition. With the increase of exhaust gas temperature, the working conditions of exhaust Industrial Valves. With the increase of other conditions, the exhaust Industrial Valves burning loss increased.

2。 Some of the combustion chamber carbon with waste gas discharge, and like the particles stick to the exhaust valve and valve seat sealing surface. Especially in heavy oil heating temperature control is not good, viscosity is too large, spray in the cylinder fuel atomization, high pressure oil pump piston wear and backward combustion in the can cause the exhaust valve and seat sealing area of carbon pollution. In addition, in the combustion chamber after all kinds of complex heat treatment, the impurity in the fuel oil deposits on the exhaust valve disc and seat sealing cone hard brittle material in a layer of glass and mixed with sodium sulfate, calcium sulfate, ferric oxide and carbon particles.

3。 When the layer of vitreous sediment deposition thickness is too large, when the valve is closed, under the action of impact crack will appear. After repeated shocks, will develop into flake, forming a high temperature gas jet channel valve burning.

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