Dongfeng Ba long flat top 507 cab assembly Dongfeng flat top 507 cab front panel

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  in the cab; when the engine valve is out of order, please first make a fault diagnosis. Experience shows that only replace the valve and not to identify the cause of the problem, not only to solve the problem, it may appear the same phenomenon, this requires us in the face of valve failure, first check valve, and the correct analysis of their working conditions, mainly due to expire sentenced to do further damage to the door. Disposal. The main reason Howard driving chamber valve failure are: 1, the cylinder head deformation is 2, valve dynamics disorder 3, foreign object impact 4, high working temperature 5, the use of poor maintenance. The engine exhaust gas turbocharger (hereinafter referred to as the automobile turbocharger) is a device that is widely used in precision, engineering machinery, generators and other power devices, without changing the basic structure of the diesel engine, the supercharger can increase the power of 30% or more, the fuel consumption is reduced by about 5%, received very good economic benefits. However, the turbocharger in the process of its use is often due to the installation, improper use, can not reach the expected results, is based on the structure of the turbocharger, the analysis of the common failure of the turbocharger. The use of exhaust gas turbocharger is discharged in the exhaust pipe, driving the turbine rotating speed, the rotor shaft drives the compressor impeller rotating speed, the speed can be as high as 50000 ~ 230000r/min, the high-speed rotation of the impeller sucked air pressure, the air entering a cylinder density increases greatly, improve the power of diesel engine. The turbocharger is used to increase engine power and reduce emissions of important parts. Due to the use, maintenance and maintenance of improper, prone to failure, resulting in the engine can not work properly. Some troubles and treatment methods of turbocharger is introduced as follows: 1 common turbocharger oil leakage phenomenon: oil consumption is large, but the normal exhaust smoke color, power is not reduced. Reason: This is generally caused by oil leakage. processing method: (1) first of all, should check the engine lubrication system external tubing (including the turbocharger inlet, return pipe) whether the oil leak; (2) check turbocharger exhaust gas exhaust whether there is oil. If there is oil, you can determine the turbine end seal ring damage, should replace the sealing ring. two phenomena: oil consumption, exhaust emit blue smoke, but the power is not decreased. reason: as the booster transformer leak oil, the oil into the combustion chamber to burn caused by the engine intake pipe, there are several possibilities: (1) the turbocharger oil return pipe is not smooth, in the middle support rotor assembly accumulates too much into the air impeller along the rotor axis. (2) near the end of the compressor impeller sealing ring or oil ring is damaged, the oil enters the impeller chamber, and then with the indoor turbo air through the tube together into the combustion chamber.