Cummins 200kw diesel generator set price

1, the exhaust noise:

Exhaust is a kind of high temperature and high speed flow pulsation chi, noise is the biggest energy in engine noise, composition most part.Than air intake noise and mechanical noise of the body radiation is much higher, and is the most important part of the total noise of engine.It is the fundamental frequency of the engine ignition frequency.The main components of the exhaust noise has the following kinds: cyclical low frequency pulse noise caused by smoke, smoke the pipe of the gas column resonance noise, cylinder helmholtz resonance noise, high speed air flow through the valve clearance and zigzag line produced by noise and vortex noise and exhaust system of pressure wave in the pipe produced by regenerative noise, etc., with the increase of air velocity, noise frequency increased significantly.

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