Analysis on oil dripping phenomenon of diesel generator set

Many friends have found that there may be slight leakage inside the engine of a diesel generator set , which is the so-called oil dripping. What exactly causes the oil dripping? What are the detailed fault locations? Haixing will give detailed answers to friends in the following article.

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

1. The piston-cylinder liner is not sealed well, the oil is rushing up, entering the combustion chamber to burn, and the exhaust gas emits blue smoke.

2. For supercharged diesel engines, due to low load and no load, the supercharged pressure is low. It is easy to cause the sealing effect of the supercharger oil seal (non-contact type) to decrease, and the engine oil penetrates into the supercharge chamber and enters the cylinder with the intake.

3. Some of the engine oil that rushes up to the cylinder participates in combustion, and some of the engine oil cannot be burned. Carbon deposits form at the valve, air intake, piston top, piston ring, etc., and some are discharged with the exhaust gas. In this way, engine oil will gradually accumulate in the exhaust passage of the cylinder liner, and carbon accumulation will also form.

4. When the oil in the supercharger's supercharger accumulates to a certain extent, it will leak out from the joint surface of the supercharger.

5. Long-term small load operation will lead to worsening wear of moving parts and deterioration of engine combustion environment, leading to early overhaul periods.

In addition, Haixing reminds users to minimize low-load/no-load running 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 working efficiency are maintained.