Analysis of oil dripping phenomenon in diesel generator sets

Many friends found thatDiesel generator setThere may be slight leakage inside the engine, which is the so-called oil dripping. What exactly causes the oil dripping phenomenon? What are the detailed fault locations? Haixing will give detailed answers to friends below.

If the generator set is operated under a small load, the following faults will occur as the running time continues:

1. Piston-the cylinder liner is not well sealed, the engine oil flows up and enters the combustion chamber for combustion, and blue smoke is emitted from the exhaust.

2. 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 escape into the supercharging chamber and enter the cylinder along with the intake air.

3. Part of the engine oil that flows up to the cylinder participates in combustion, part of the engine oil cannot be burned, and forms carbon deposits on the valve, intake passage, piston top, piston ring, etc., and the remaining part is discharged with the exhaust. In this way, engine oil will gradually accumulate in the exhaust passage of the cylinder liner, and carbon deposits will also form.

4. If oil accumulates in the supercharging chamber of the supercharger to a certain extent, it will leak from the joint surface of the supercharger.

5. Long-term low-load operation will lead to more serious consequences such as increased wear of moving parts, deterioration of the engine combustion environment, etc., leading to an earlier overhaul period.

In addition, Haixing reminds users to minimize low-load/no-load operation time when using diesel generator sets. The minimum load cannot be less than 40% of the rated power of the generator set. Only by complying with such operating specifications can the normal operation of the unit be ensured and good quality maintained. Work efficiency.