Reasons for abnormal sound of diesel generator

    2017-12-20 09:04:47 Reasons for abnormal sound of diesel generator
     
    (1) Exhaust valve abnormal sound, can be heard in the exhaust pipe muffler,like the tire leakage when the "Xi Xi" sound. The valve leak can be heard at the air filter of the carburetor, and the sound is like a "boo" sound like the baby whistles. The reason is the valve and the seat of the face serious wear or ablation, there are grooves and spots, can not be tightly closed. And some is because the valve stem and the catheter gap is too large or the valve rod bending, so that the valve   head can not be centered and skewed, causing leakage. If the valve spring spring weakened or broken, the valve can not be close with the seat ring face, will cause leakage. From the assembly side, if the valve stem and the catheter gap is too small, during the work thermal expansion was stuck, or valve clearance is too small, the valve stem heated by the extension of the tappet or rocker top valve, are Will make the valve can not be completely closed and leak.
    diesel generator
    (2) abnormal sound when the valve spring is broken due to the valve placement vary. Side-mounted valve spring break, the work issued a "Cha Cha" sound, if you remove the valve compartment cover will hear more clearly. When the top-mounted valve spring is broken, the valve will automatically sink and hit with the piston, and the "Dangdang" percussion sound. If not timely flameout, will cause the top bad piston, broken link, or even more serious losses.
     
    (3) excessive cylinder carbon deposition can cause abnormal sound, because the carbon deposition is too much, the carbon layer was hot, the piston temperature is high, the piston ring groove, piston pin hole clearance increases, thus issuing a "chatter" Abnormal sound. The fault is often accompanied by high temperature, the engine is not easy to turn off or can not turn off and so on. The reason is that the proportion of oil in the mixed oil or oil pan oil fleeing into the combustion chamber, should further identify the specific reasons and be excluded.  
     
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