从声音诊断故障（Fault diagnosis from sound）.docVIP

从声音诊断故障（Fault diagnosis from sound） From the sound diagnosis fault,.Txt liar too much, fool obviously not enough. I was in charge of kiss your princess in the way to kill Longyou Zhanji River and climbing to the top of the tower. Fault diagnosis from sound 1. engine vibration abnormal sound is generally due to the support of the diesel engine is not firmly due to. 2. if the engine is turned two times (i.e. a working cycle of the engine) knock once, the fault reason appeared in connection with the cam shaft parts, such as valve, a push rod, valve spring and timing gear etc.. 3. if the engine turns around, the abnormal sound occurs once. The cause of the trouble is the parts related to the crankshaft, such as piston, piston pin, piston ring and connecting rod bearing. 4. if the abnormal sound occurs continuously and the abnormal sound has a certain rule, the fault position appears mostly on the rotating parts, such as the continuous knocking, mostly occurs in the flywheel, timing gear and other parts. 5. if the abnormal sound occurs intermittently and the sound is not regular, the cause of the trouble is mainly from the engine accessories, such as generator, water pump, air compressor, starter and so on. The diagnosis and elimination of the common abnormal sound, the vibration of the diesel engine starts to produce irregular chattering noise, and increases with the increase of engine speed. The main causes of vibration and vibration are as follows: the support bolts of diesel engine are loose or suspended; the position of the engine is not proper, which results in the different crankshaft and the first transmission shaft, and the damage of the engine mounting buffer. It is found that the organic vibration of engine should be checked out directly according to the above reasons. After starting the engine piston cylinder knocking a crisp rhythm, Dong Dong rapping. This phenomenon is generally due to the engine oil delivery time is too early (injection advance angle is to