FAW hanwag topped the new driving assembly liberation hanwag cab accessories

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HOWO cab in use in the process there will be some failures, so to find the problem, find a solution is the key to ensure the safety of our. In the process of moving the driver summary, feel the loss of engine power and abnormal sound, continue driving, the deterioration of the situation until the engine stops, the inspection results expressed as third cylinder piston top (weld area of 2 / 3) after seizure.
so, what is the diagnosis for this failure? first, carefully check the piston top Howard has fused the cab. The cylinder of the cylinder has been pulled, the piston ring and piston ring groove adhesion together. According to the observation, the cylinder strain and the piston and the piston ring groove adhesion is caused by the melting of the piston crown. So the exclusion of frictional heating by the mechanical part of improper assembly or material discomfort caused by the possibility of the cab piston top melting. through the inspection and ruled out by the engine temperature is too high and cause the top of the factors. And to provide manufacturers to provide a detailed understanding of the parts, the exclusion of parts itself. Through the comprehensive judgment and analysis, concluded that the failure occurred in Howard injector fuel system in the vehicle cab. The working condition of the injector has a direct influence on the working condition of the engine. Therefore, it is not only required that the injector can be injected into the cylinder with a certain pressure, but also it is required to be accurate in the injection time, the distribution is uniform, and the atomization is good. If the injection can not be atomization and timing, and even if the fuel injector seal is poor and the fuel leakage, it will cause the fuel to gather in the cylinder of a part of a continuous combustion. because of this kind of combustion always runs through the whole process of engine work (enter, press, do, row). In this way, it will generate high temperature in the cylinder, which burned parts. The case of the car, in the engine overhaul, no correction of the fuel injector, nor the maintenance of the fuel system (only in the case of the fuel injector after the correction). therefore, through comprehensive analysis, can conclude that molten fuel system working piston cab is Howard abnormal caused by the top.