Types of noise for Diesel Genset

The existence of diesel generators is convenient for our lives, providing us with backup power in case of accidents, but the Diesel Generator sets provide us with convenience, but also bring us noise, which directly affects our health. work and life.
Diesel engine block noise is a complex sound source made up of multiple sound sources. The main noise sources are diesel engines, including exhaust noise, mechanical noise and combustion noise, cooling fans and exhaust noise, air intake noise, Generator noise, and noise generated by the transmission of ground vibration.
1. Exhaust noise. Exhaust noise is a kind of high-temperature, high-speed pulsating airflow noise, which is a kind of energy in engine noise, and its noise can reach more than 10, which is an integral part of the total noise of the engine.
2. Mechanical noise and combustion noise. Mechanical noise and combustion noise are difficult to distinguish strictly. Generally, noise caused by pressure fluctuations in the combustion of the cylinder through the cylinder head, piston, Lianxuan, crankshaft, and the body is called combustion noise. The noise generated by the impact of the piston on the cylinder liner and the mechanical impact of the moving parts is called mechanical noise. Generally, the direct injection diesel engine has higher combustion noise than the mechanical noise, while the non-direct injection diesel engine has higher mechanical noise than the combustion noise. However, the combustion noise is higher than the mechanical noise at low speed operation.
3. Cooling fan and exhaust noise. Unit fan noise is composed of eddy current noise, rotational noise, and mechanical noise. Exhaust noise, airflow noise, fan noise, and mechanical noise will propagate through the exhaust ducts, causing noise pollution to the environment.
4, the wind noise. The function of the air inlet passage is to ensure the normal operation of the engine and to create good heat dissipation conditions for the unit itself. The air inlet passage of the unit must be able to smoothly enter the engine room, but at the same time the mechanical noise and airflow noise of the unit will be radiated to the outside through this air inlet channel.

5. Transmission noise of ground vibration. The strong mechanical vibration of the diesel engine can be transmitted to the outside through the ground and then radiated through the ground.