Exhaust noise: During the operation of the generator set, the exhaust system generates noise due to the high-speed flow of gas in the exhaust pipe.
Mechanical noise: The moving parts of the generator set will collide and vibrate during operation, resulting in noise.
Combustion noise: During the combustion process, the pressure changes generated by the combustion of fuel in the combustion chamber can also create noise.
Cooling fan and exhaust noise: When the cooling fan is running, air flow will produce noise, and the exhaust outlet will also produce noise due to gas discharge.
Inlet noise: Noise generated at the inlet due to air flow.
Generator noise: During the operation of the generator, changes in the electromagnetic field can also generate a certain amount of noise.
Specific types of noise and their causes:
Piston knocking sound: This is caused by a change in the direction of axial force generated at the top of the piston.
The sound of crankshaft bearings and connecting rod bearings: These two types of sounds can be distinguished by the location and frequency of the sound, with the large bearing having a lower sound and the small bearing having a higher sound.
Exhaust system sound: When there is a leak in the intake or exhaust manifold, it will produce a sound when the engine is idling or accelerating, respectively.
Crankcase ventilation leakage sound: This is the sound generated by a leakage in the crankcase ventilation system.
Vibration sound: usually a sound of a heavy hammer striking metal, which may be accompanied by engine vibration.
Slight hissing sound: This may be the sound of air blowing, sometimes mistaken for an illusion.
The sharp sound of dry friction on metal parts: This is caused by damage to bearings such as generators and water pumps.
The clattering sound in the engine compartment: This is caused by the lubricating oil not reaching the various moving parts in time during cold start.
Engine exhaust cannon sound: This is the sound produced during the exhaust process due to incomplete combustion of diesel in the cylinder.
To effectively reduce these noises, the following measures can be taken:
Sound insulation treatment: Perform sound insulation treatment on the windows and walls of the computer room, using fire-resistant and soundproof doors and windows.
Air inlet and exhaust treatment: Ensure that the air inlet and exhaust outlet are set reasonably and equipped with mufflers to reduce noise.
Sound absorption treatment: Apply sound absorption treatment to the inner wall of the computer room, using perforated panel resonant sound absorption structure.
Vibration isolation treatment: Perform vibration isolation treatment before installing the generator set to avoid structural sound propagation.
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