The Correct Way for Diesel Generator Water Temperature and Speed

Diesel generator sets are widely used in the market. For example, they are used for emergency power generation and serve as backup power sources for industries such as hospitals, banks, airports, hotels, and communications. Therefore, there is a growing demand for knowledge about diesel generator sets. A generator is a complex mechanical device, and to truly master the essential knowledge, in - depth research and understanding are required. However, there are many fallacies in the use of diesel generator sets. At first glance, they seem correct, but upon closer examination, they are not. The following is a detailed explanation by the editor of Guangxi Dingbo Power on the following two aspects:

The first misconception: The lower the water temperature of the diesel engine, the better

During the operation of a diesel engine, there are certain requirements for the water temperature. It's not true that a lower water temperature is better. In practical applications, some people tend to set the outlet water temperature as low as possible, even close to the lower limit of the water temperature. They believe that a low water temperature can prevent the water pump from cavitation, and the cooling water (liquid) will work continuously. In fact, as long as the water temperature does not exceed 95°C, cavitation will not occur, and the cooling water (liquid) will not stop flowing. On the contrary, if the water temperature is too low, it is harmful to the diesel engine.

1.A low temperature will deteriorate the combustion conditions of diesel in the cylinder. In severe cases, it may even damage components such as crankshaft bearings and piston rings.

2.A low temperature will cause the water vapor after combustion to easily condense on the cylinder wall, resulting in metal corrosion.

3.A low temperature may cause the unburned diesel to dilute the engine oil, worsening the lubrication conditions.

4.Incomplete combustion due to low temperature may cause the piston rings to get stuck in the piston ring grooves and the valves to jam.

5.An extremely low water temperature will make the engine oil more viscous, reducing the lubrication effect.

The second misconception: The rotational speed of the diesel generator set should be lower

Many people think that a lower rotational speed during the use of a diesel generator set will reduce the likelihood of malfunctions, but this is incorrect. It will lead to the following consequences:

1.It directly reduces the output power of the diesel engine.

2.It deteriorates the working performance of components.

3.It reduces the standby power of the generator set, which may cause the diesel engine, which should be operating normally, to work at full - load or overload.

4.It reduces the mechanical performance of the linkage mechanism, such as reducing the water output and head of the water pump.

As long as we operate strictly in accordance with the instruction manual, avoid extremes, and operate and maintain the machine as required, it will serve us in good working condition.

Dingbo Power was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to [email protected] we will pay highly attention on your question.