Common fault phenomena of
diesel generator include starting failure, fuel system failure, engine overheating, electrical system failure and mechanical failure. The specific manifestations are as follows:
1. Starting failure: The diesel generator cannot start or starts with difficulty, which may be caused by insufficient battery power, starting motor failure, fuel supply problems or ignition system failure.
2. Fuel system failure: Including fuel leakage, fuel pump failure, fuel filter blockage, etc., these problems may cause the generator to fail to operate normally.
3. Engine overheating: It may be caused by insufficient coolant, radiator blockage, water pump failure, etc. Overheating may cause engine performance to decline, or even cause more serious failures.
4. Electrical system failure: Including generator winding failure, excitation system failure, regulator failure, etc., which may cause the generator to fail to produce stable power output.
5. Mechanical failure: Involving various components of the generator, such as bearings, gears, connecting rods, etc., which may cause the generator to vibrate more, increase noise or degrade performance.
Diesel generators often show some obvious signs when they fail:
Abnormal noise: Such as knocking, friction or roaring, which may indicate loose internal components, wear or more serious failures.
Excessive temperature: The temperature of the generator set rises abnormally, even hot, which may reveal problems with the cooling system or overload of the unit.
Smoke emission: The appearance of black, white or blue smoke may mean incomplete fuel combustion, oil leakage or other technical problems.
Voltage fluctuation: The output voltage fluctuates greatly or exceeds the normal range, which may be a problem with the voltage regulation system.
Surge in fuel consumption: If the fuel consumption increases significantly without increasing the workload, it may reveal a fuel system leak or other mechanical problems.
Oil pressure drop: The oil pressure is too low, which may involve problems such as oil pump failure, filter blockage or oil leakage.
Coolant leak: The discovery of coolant leakage may mean that there is damage or poor sealing of components such as cooling system pipes, radiators or water pumps.
