柴油发电机组常见故障 Common faults of diesel generator sets

Information provided by the generator industry station:

1. What is the reason for the demagnetization of the generator (electric ball) and how should it be handled?

Answer: If the generator (electric ball) is not used for a long time, the residual magnetism contained in the iron core before leaving the factory will be lost, and the excitation coil cannot establish the expected magnetic field. At this time, the engine is running normally but cannot generate electricity. There are many new or long-term unused units Handling method:

1) Press the excitation button if there is one

2) Magnetize it with a battery without an excitation button. 3) Run a light bulb load for a few seconds at an overspeed

2. What level of energy does electricity belong to? What are the characteristics of alternating current?

Answer: Electric energy belongs to the category of secondary energy. AC power is converted from mechanical energy to DC power, and from chemical energy to AC power. Its characteristic is that it cannot be stored for immediate use

3. Why must the working compartment of the generator (electric ball) be kept clean and free of floating dust on the ground?

Answer: If a diesel engine inhales dirty air, it will cause a decrease in power; If the generator inhales impurities such as sand and dust, it can cause insulation damage between the stator and rotor gaps, and in severe cases, lead to burning

4. What are the reasons for causing high water temperature alarm shutdown and inability to use?

Answer: Water tank

Leakage or insufficient water volume; The water temperature sensor is damaged; The dirt in the water tank and waterway is too thick, or there is too much oil pollution on the heat sink;

Excessive wear of fan belt and insufficient pressure; Wear and tear of the water pump, insufficient water flow of the pump; The thermostat opening angle is not sufficient and there is a jamming phenomenon; The damaged water channel of the cylinder gasket is connected to the cylinder; The cylinder liner is severely worn and partially leaking water; The ventilation in the computer room does not meet the requirements; Engine overload operation; Excessive fuel supply (including engine fatigue)