1. Release water too early or do not release cooling water. Idle before stopping the engine. Wait until the temperature of the cooling water drops below 60°C and the water is not hot for your hands. Then stop the engine and drain the water. If the cooling water is released prematurely, the body will suddenly shrink and crack when suddenly attacked by cold air when the temperature is high. When draining the water, the remaining water in the body must be completely drained to prevent it from freezing and expanding, causing the body to burst.
2. Due to the poor working environment in winter, it is necessary to replace the air filter element frequently at this time, because the requirements for the air filter element and diesel filter element are particularly high in cold weather. , if not replaced in time, engine wearwill increase. This will directly affect the life of the diesel engine.
3 When the diesel engine starts in winter, the air temperature. The temperature drawn into the cylinder is low and it is difficult for the piston to compress the gas to reach the natural temperature of the diesel. Therefore, corresponding auxiliary methods should be used to increase body temperature before starting.
4. After the diesel engine is started, it should run at low speed for 3-5 minutes in order to increase the temperature of the diesel engine and check the working condition of the lubricating oil only afterward. the inspection is normal, can it be put into normal operation. When the diesel engine is running, try to avoid suddenly increasing the speed or pressing the accelerator to the maximum, otherwise the life of the valve assembly will be affected over time.
5. Don't pay attention to the iisolation of the body. The low temperature in winter can easily cause the diesel engine to overcool during operation. Insulation is therefore the key to properly using diesel generators in winter. If you are in the northern region, diesel generator sets used in winter should be equipped with cold protection equipment such as thermal insulation sleeves and thermal insulation curtains.
6. Use an open flame to aid combustion and starting. The air filter cannot be removed. Dip cotton gauze in diesel fuel and light it to make a fire starter and place it in the intake pipe to start combustion. In this way, during the starting process, dusty air from the outside will be directly inhaled into the cylinder without filtering, causing abnormal wear of the piston, cylinder and other parts. This will also result in a frough operation of the diesel engine and will damage the machine. .
7. Incorrect boot method. In winter, in order to quickly start the diesel generator set, some drivers often use the abnormal starting method of waterless starting (start first, then add cooling water). This practice can cause serious damage to the machine and should be prohibited. The correct preheating method is as follows: first cover the water tank with an insulating quilt, open the drain valve, and continuously inject clean soft water at 60-70°C into the water tank. water when the water flowing from the drain faucet is hot when you. touch it with your hand, close the drain valve. Pour fresh, clean water at 90-100°C into the water tank and rotate the crankshaft to ensure all moving parts are properly pre-lubricated before starting.
8. Operationt charging at low temperatures. After the diesel generator started to catch fire, some employees were eager to put it into operation immediately. In a diesel engine that has caught fire for a short time, due to the low body temperature and high oil viscosity, the oil does not easily penetrate into the friction surface of the moving pair, resulting in will cause significant wear and tear on the machine. . Additionally, piston springs, valve springs and injector springs are also prone to breakage due to "cold brittleness". Therefore, after the diesel engine starts and fires in winter, it should idle for a few minutes at low and medium speed, and then be put into load operation when the cooling water temperature reaches 60°C .