Prevention and Treatment of Air Resistance of Diesel Generator Radiator

Jul. 30, 2022

The radiator is one of the important components of the diesel generator cooling system. The function of the cooling system is to ensure that the diesel generator works within the most suitable temperature range. The diesel generator set radiator is fixed on the generator base in front of the engine. A belt-driven fan blows air into the radiator core, cooling the coolant flowing through the radiator. In the whole body of the diesel generator set, the radiator is very important to ensure the normal operation of the generator set. Among them, it is especially important to prevent the air resistance failure of the radiator.


The cover on the radiator of generator set is a combination of the air hole and the steam valve. When the water in the radiator is heated, the pressure rises, the steam valve opens, so that the water vapor is discharged from the valve hole; when the water temperature decreases, the outside air will enter the radiator from the valve hole to keep the pressure inside the radiator stable. If the valve hole is blocked or the piston cover is lost, the user may use a common cover plug to seal it. When the water temperature drops, a negative pressure will form in the radiator to generate air resistance, and the circulating water volume is insufficient, causing the radiator sleeve to suck under the action of atmospheric pressure. When the water temperature rises, it affects the heat dissipation performance of the radiator and the engine, and in severe cases, the radiator sleeve will expand.

 Diesel Generator Radiator

The prevention method is to keep the valve hole unobstructed and the spring effective; if the cover is lost, it cannot be sealed with other materials, and the radiator opening cannot be opened, and new parts should be purchased and installed in time.


There is air resistance in the cooling system, which will cause the circulation of the cooling system to be unsmooth, resulting in high water temperature, which will seriously affect the normal use of the diesel generator set. Users must be vigilant and strictly check all systems of the unit to avoid failures.


Highland Influence Generator Cooling


When generator recover power in the plateau, the mechanical and thermal load increase, among which the thermal load is more prominent, and the increase in thermal load is the main factor limiting the power of the plateau diesel generator.


As the altitude increases, the air pressure decreases, and the boiling point of the water decreases, and the water-cooled diesel generator often affects the work due to the boiling of the water tank. On the one hand, due to the decrease in the concentration of the combustible mixture, the combustion speed slows down, causing the phenomenon of post-combustion, the exhaust temperature increases, and the heat load increases. On the other hand, the air density decreases, the mass flow of the fan decreases, and the cooling effect of the diesel generator set becomes worse. Excessive heat load not only reduces the performance of diesel generator sets, but also tends to cause cylinder pulling.


Therefore, the diesel generator should not only control the heat load generated by the combustion, but also control the temperature rise caused by the cooling system.


Guangxi Dingbo Power Equipment Manufacturing Co., Ltd., founded in 2006, is a Chinese diesel generator brand OEM manufacturer integrating the design, supply, commissioning and maintenance of diesel generator sets, providing you with one-stop service for diesel generator sets. For more details about the generator, please call Dingbo Power or contact us online.

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