IE S021REPORT BY SE “UKRVODPUT” · JULY 2001
Marine diesel 6ChN 18/22: compression and oil pressure rose in service
Compression rose in all cylinders, fuel consumption under load dropped, oil pressure rose. 19.3–37.2 % — cylinder compression, 22.6–24.8 → 29.0–31.0 kgf/cm²; 11.6 % — fuel consumption under load, 21.5 → 19.0 kg/h; 21.4 % — oil pressure at 750 rpm, 2.8 → 3.4 kgf/cm² (2001).
with signatures and stamps
What the commission recorded after 500 hours
| VESSEL · ENGINE | CHECK AFTER TREATMENT | WHAT WAS MEASURED |
|---|---|---|
| dredger DN “E. Kolodochka” · 6ChN 18/22, six cylinders | after 100 and 500 h of operation | compression by cylinder, oil pressure, fuel consumption under load |
How the effect grew on the “E. Kolodochka” — 6ChN 18/22, all six cylinders
| CYLINDER | BEFORE TREATMENT | AFTER 100 HOURS | AFTER 500 HOURS |
|---|---|---|---|
| Cylinder 1 | 24.3 | 26.0 | 29.0 |
| Cylinder 2 | 24.0 | 26.0 | 30.0 |
| Cylinder 3 | 24.3 | 28.0 | 31.0 |
| Cylinder 4 | 24.8 | 28.0 | 31.0 |
| Cylinder 5 | 22.6 | 24.0 | 31.0 |
| Cylinder 6 | 24.0 | 24.0 | 30.0 |
| Engine average | 24.0 | 26.0 | 30.3 |
The values are cylinder pressures, kgf/cm². The weakest cylinder before treatment (22.6) gained the most and reached the level of the best ones.
Fuel consumption
| MEASURING POINT | BEFORE TREATMENT | AFTER TREATMENT | CHANGE |
|---|---|---|---|
| “E. Kolodochka”, 750 rpm, load on the generator | 21.5 kg/h | 19.0 kg/h | −11.6 % |
Consumption was taken by timing the engine on a measured portion of fuel: more time on the same portion means lower consumption.
Oil pressure in the lubrication system
| MEASURING POINT | BEFORE TREATMENT | AFTER TREATMENT | CHANGE |
|---|---|---|---|
| “E. Kolodochka”, 750 rpm, oil at 65 °C | 2.8 | 3.4 | +21.4 % |
Values in kgf/cm², measured at an oil temperature of 65 °C.
Conclusion of the enterprise commission
Current equivalent
- Revitalizant gel for diesel enginesDiesel engines
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
How such units are treated:
About this result:
Method for this machine:
Limits of this report: The results relate to the marine diesel 6ChN 18/22 treated in service; with other engines and conditions the figures may differ. RVS is an obsolete XADO designation, the zero-generation compounds; the current product generation is revitalizants.