The main reasons why
diesel generators are difficult to start can be summarized as follows: fuel system problems, electrical system problems, compression system problems, and environmental factors.
Firstly, fuel system issues are one of the most common causes. This includes insufficient fuel, blocked fuel lines, air in the fuel system, fuel injection pump not supplying fuel or timing incorrectly, injector not spraying or poor atomization, etc. For example, parts such as fuel filters and fuel pipes may be clogged with impurities, causing diesel to not flow smoothly. In addition, clogged fuel injectors or abnormal injection pressure can also affect the normal injection of fuel, thereby affecting engine start-up.
Secondly, electrical system issues are also an important reason for the difficulty in starting diesel generator sets. This includes insufficient battery power, starter motor failure, circuit failure, etc. For example, a low battery level may not provide enough power to start the starter motor, or abnormal circuit connections such as broken wires or loose connectors can cause the engine to fail to start.
Compression system issues are also a common cause. This includes insufficient cylinder compression, clogged air filter, etc. Insufficient cylinder compression may be caused by wear of piston rings, poor valve sealing, etc., leading to a decrease in cylinder pressure and affecting the compression ratio of the engine, making it difficult to start. If the air filter is clogged, it will restrict air from entering the engine and affect the combustion process.
Finally, environmental factors cannot be ignored. Under low temperature conditions, the viscosity of diesel increases and its fluidity deteriorates, which may lead to difficulties in starting. In addition, in high-altitude areas, thin air and reduced engine intake may also affect starting performance.
Corresponding measures can be taken to address the above reasons. For example, regularly check the fuel system and electrical system to ensure sufficient fuel, smooth oil lines, and normal circuit connections; Timely replace worn components such as piston rings, valves, etc; Use preheating devices to increase engine temperature in low-temperature environments. Through these measures, the problem of difficulty in starting diesel generators can be effectively reduced.
