Long-term low idling or no-load operation for more than 10 minutes will damage the engine. This is because the combustion chamber temperature is too low to completely burn the fuel, causing carbon deposits to form around the injector holes and piston rings and causing valve adhesion.
Therefore, in order to prevent this from happening, the idling time should be shortened as much as possible. This article is introduced in detail by Huaquan Power.
1. Part of the oil that rises to the cylinder participates in the combustion, while part of the oil cannot be completely burned, forming carbon deposits at the valve, intake duct, piston top, piston ring, etc., and part of it is discharged with the exhaust. In this way, oil will gradually accumulate in the cylinder liner exhaust duct, and carbon deposits will also form;
2. When the oil in the supercharger chamber of the supercharger accumulates to a certain extent, it will leak out from the joint surface of the supercharger;
3. The piston-cylinder liner seal is not good, the oil rises, enters the combustion chamber for combustion, and the exhaust emits blue smoke;
4. For supercharged diesel engines, due to low load and no load, the boost pressure is low. It is easy to cause the sealing effect of the supercharger oil seal (non-contact type) to decrease, and the oil will enter the supercharger chamber and enter the cylinder with the intake air;
5. Long-term low-load operation will more seriously lead to the consequences of increased wear of moving parts, deterioration of the engine combustion environment, etc., leading to the early overhaul period. Therefore, foreign diesel engine manufacturers emphasize that the low-load/no-load operation time should be minimized regardless of whether they are naturally aspirated or supercharged, and stipulate that the minimum load cannot be less than 25%-30% of the rated power of the unit.
The five major hazards of low-load operation of diesel generator sets are as follows. I hope it can help users better understand the key points of using diesel generator sets. Shandong Huaquan Power Equipment Manufacturing Co., Ltd. is a professional diesel generator set manufacturer
