An ordinary diesel generator set is mainly composed of three parts: diesel engine, generator and control system. There are two ways to connect the diesel engine and the generator. One is flexible connection, that is, the two parts are connected with a coupling, and the other is rigid connection, which is formed by connecting the generator rigid connecting plate and the diesel engine flywheel with high-strength bolts. Diesel generator sets on the market use more rigid connections. After the diesel engine and the generator are connected, they are installed on a common chassis, and then equipped with various protective sensors, such as water temperature sensors. Through these sensors, the operating status of the diesel engine is intuitively displayed to the operator. With these sensors, an upper limit can be set. When this limit is reached or exceeded, the control system will give an advance alarm. At this time, if the operator does not take measures, the control system will automatically stop the unit. The diesel generator set adopts this method to protect itself. The sensor receives and feeds back various information. The control system of the diesel generator set is what really displays these data and performs protection functions. The control panel is generally installed on the generator, which is called a backpack control panel. Some are independent panels placed in the operating room, which are called split control panels. The control panel is connected to the generator and the sensor through cables, and displays electrical parameters and diesel engine operating parameters respectively. In addition, the generator set also has a chassis, coupling, radiator, fuel tank, and some are also equipped with a muffler and outer cover.

After the generator set has been running for a period of time, regular inspections should be carried out. Long-running units should be inspected every 6-8 hours, and standby units should be inspected again after shutdown. The inspection areas can be the following: lubricating oil residue, air filter blockage indicator, coolant level, radiator and external ventilation conditions, engine drive belt group, fuel supply conditions, etc. After every 50 hours of operation, the water in the oil-water separator should be drained and the electrolyte level of the starting battery should be checked. After a new unit has been running for 200-300 hours, the valve clearance and injector should be checked. After every 400 hours of operation, the transmission belt should be checked and adjusted, and replaced if necessary. The radiator chip should be checked and cleaned, and the sludge in the fuel tank should be drained. The lubricating oil and lubricating oil filter should be replaced every 600 hours of operation or at least every 12 months. The frequency of lubricating oil replacement cycle of the unit should be determined according to the quality of different lubricating oils. The oil-water separator and fuel filter should be replaced every 800 hours of operation, and the turbocharger and intake pipe should be checked for leaks, and the fuel pipe should be checked and cleaned. The valve clearance should be adjusted after every 1200 hours of operation. The air filter and coolant should be replaced every 2000 hours of operation, and the radiator chip and water channel of the water tank should be thoroughly cleaned. The injector should be checked after every 2400 hours of operation, and the turbocharger should be thoroughly checked and cleaned, and the engine equipment should be fully inspected.