Common faults and troubleshooting methods of diesel generators Analysis of diesel generator faults

Common faults of diesel engines: The engine has no idle speed, and the reason is that the idle spring of the governor is too soft or broken. The sensing element of the speed regulator is worn out too much. The plunger of the fuel injection pump is severely worn. The temperature is too low. The cylinder pressure is too low. Diagnosis and treatment method: There is no idle during cold start, which is generally a normal phenomenon.

Common faults of diesel generators: Black smoke from diesel generator sets. Black smoke from diesel generator sets is caused by an increase in fuel injected into the combustion chamber, resulting in higher temperatures and uneven fuel combustion. This situation usually occurs when the diesel generator set is operating at overload.

One of the most common reasons why a generator cannot start due to battery failure is battery malfunction. This is usually caused by loose connections or sulfation (accumulation of lead sulfate crystals on the plates of lead-acid batteries).

Reason for demagnetization fault of diesel generator: The generator is not used for a long time, resulting in the loss of residual magnetism contained in the iron core before leaving the factory, and the excitation coil cannot establish the expected magnetic field. At this time, the engine runs normally but cannot generate electricity. This phenomenon is more common in new engines, units stored in humid environments, or units that have not been used for a long time.

What are the common faults and troubleshooting methods of diesel generator sets?

1. Part 3: Other faults: Generator catching fire, generator turning into an electric motor, generator water and hydrogen leakage, generator oscillation or loss of synchronization, generator asynchronous parallel operation, etc. All should be stopped and checked in a timely manner to identify the cause and eliminate the fault.

2. The machine has malfunctioned, cut off the power and conduct a comprehensive inspection. During the operation of the generator, faults may occur due to internal factors, external environment, or improper operation.

3. It may be due to insufficient battery power supply of the Shangchai generator set. Before starting, check the electrolyte and charging, and if necessary, replace the battery directly. It may be because there is water in the generator set. At this time, it is not allowed to disassemble the generator set without authorization. Please immediately contact the maintenance personnel of the diesel generator set manufacturer, such as Yangzhou Fukansi.

4. Reason for demagnetization fault of diesel generator: The generator is not used for a long time, resulting in the loss of residual magnetism contained in the iron core before leaving the factory, and the excitation coil cannot establish the expected magnetic field. At this time, the engine runs normally but cannot generate electricity. This phenomenon is more common in new engines, units stored in humid environments, or units that have not been used for a long time.

What are the common faults and troubleshooting methods for diesel generator sets?

Part 3: Other faults: Generator catching fire, generator turning into an electric motor, generator water and hydrogen leakage, generator oscillation or loss of synchronization, generator asynchronous parallel operation, etc. All should be stopped and checked in a timely manner to identify the cause and eliminate the fault.

The machine has malfunctioned, cut off the power and conduct a comprehensive inspection. During the operation of the generator, faults may occur due to internal factors, external environment, or improper operation.

Common faults of diesel generators: Black smoke from diesel generator sets. Black smoke from diesel generator sets is caused by an increase in fuel injected into the combustion chamber, resulting in higher temperatures and uneven fuel combustion. This situation usually occurs when the diesel generator set is operating at overload.

Reason for demagnetization fault of diesel generator: The generator is not used for a long time, resulting in the loss of residual magnetism contained in the iron core before leaving the factory, and the excitation coil cannot establish the expected magnetic field. At this time, the engine runs normally but cannot generate electricity. This phenomenon is more common in new engines, units stored in humid environments, or units that have not been used for a long time.

What are the reasons and solutions for diesel generator set motors not working? How to judge the quality of the starter motor relay

1. Reason for malfunction: Low pool voltage or insufficient battery capacity. The startup circuit is not supplying power normally. The relay is not working. The motor is not working.

2. Check if the battery voltage has reached the rated voltage (depending on different voltage levels). When the generator is in automatic mode, the electronic control module ECM monitors the overall status of the unit and the communication between the EMCP control panel is maintained by battery power supply.

3. The diesel generator set cannot start normally or encounters start-up problems due to low speed, which may be caused by the following reasons: insufficient battery power supply of the diesel generator set. Before starting, check the electrolyte and charging, and if necessary, replace the battery directly. It may be because there is water in the generator set.

4. Measure the excitation circuit with a resistance of several tens of ohms, and judge based on the excitation size and resistance. Measure insulation: Use a megohmmeter to measure the excitation and armature to ground insulation separately Insulation between excitation and armature If it is greater than 1 megaohm, it is qualified.

5. Solution to starter motor failure: Replace the starter motor. The specific reasons and solutions for the current situation are as follows: (1) When the diesel engine cannot rotate during startup, the fault phenomenon of the diesel engine not rotating should be analyzed and judged in two situations. One reason is that after a long period of parking, the diesel engine cannot be started for the first time.

6. The starting speed is normal, but there is no explosion sound or intermittent explosion sound when the cylinder cannot ignite, and white smoke is emitted from the exhaust pipe. It indicates that diesel does not burn inside the engine and becomes steam, or there is too much water in the diesel. If moisture is found in diesel, check the cause of the moisture in the diesel and replace the diesel in the fuel tank as required.