Hazards of long-term small-load operation of diesel generator sets

here is such a misunderstanding when using Diesel Generator sets. It is always considered that the smaller the load is beneficial to the diesel Generator Set. It is not known that this is a serious misunderstanding. The long-term small-load operation of the diesel Generator set will definitely cause harm to the diesel generator set.
1. If the load is too small, the piston of the generator set and the cylinder liner are not well sealed. The oil is on the stern and enters the combustion chamber to burn. The exhaust smokes blue smoke and pollutes the air.
2. For supercharged diesel engines, the engine boost pressure is low due to low load and no load. It is easy to cause the sealing effect of the supercharger oil seal (non-contact type) to drop, the oil enters the plenum chamber, and the intake air enters the cylinder to reduce the service life of the generator.
3. The load is too small, and part of the oil from the upper to the cylinder is involved in the combustion. Some of the oil cannot be completely burned, and carbon deposits are formed at the valve, the intake port, the piston top, the piston ring, etc., and some are discharged with the exhaust. In this way, the oil will gradually accumulate in the exhaust duct of the cylinder liner, and carbon deposit will also be formed to reduce the power of the generator set.
4. If the load is too small, the supercharged indoor oil of the generator supercharger will accumulate to a certain extent, and it will leak out from the joint surface of the supercharger.
5, long-term small load operation, will more seriously lead to increased wear and tear of moving parts, engine combustion environment deterioration and other consequences leading to the overhaul period.
Therefore, the diesel generator set manufacturers remind the users that the use of naturally aspirated or supercharged diesel generator sets emphasizes that the low load/no load running time should be minimized and that the minimum load cannot be lower than the rated power of the unit. 25% - 30%.