IE B049ACCEPTANCE TECHNICAL REPORT UNDER CONTRACT No. 8 OF 22.07.2001
TGM-23B locomotive: a worn diesel holds compression again
Compression by cylinder rose, oil temperature decreased, transmission noise and vibration fell. 7.5–14.2 % — compression by cylinder, 19–20 → 20–22 kgf/cm²; gain in 6 of 7 measurements; the rest unchanged; 5.9 % — engine oil temperature, 85 → 80 °C (2001).
with signatures and stamps
Key results
| UNIT | CONDITION BEFORE TREATMENT | WHAT WAS MEASURED |
|---|---|---|
| 1D12-400S1 diesel | Compression 19–20 kgf/cm², oil temperature 85 °C | Compression by cylinder, oil temperature |
| High-pressure fuel pump | Did not deliver normal working pressure | Performance assessment, no instrument measurement |
| Hydraulic transmission and reduction gear | Elevated noise and vibration at the transmission | Noise, vibration, torque transfer |
Compression by cylinder — 1D12-400S1 diesel
| CYLINDER | BEFORE, kgf/cm² | AFTER, kgf/cm² | CHANGE, kgf/cm² |
|---|---|---|---|
| 1st | 20 | 21.5 | +1.5 |
| 2nd | 19 | 21.7 | +2.7 |
| 5th | 20 | 22 | +2.0 |
| 6th | 19.5 | 21 | +1.5 |
| 8th | 20 | 20 | no change |
| 11th | 19.3 | 21.3 | +2.0 |
According to the conclusion of the report, compression by cylinder rose by 8–10 % on average; the largest gain was on the cylinder with the lowest initial compression.
Diesel and transmission — what changed after treatment
| UNIT | PARAMETER | RESULT |
|---|---|---|
| 1D12-400S1 diesel | Oil temperature | 85 → 80 °C |
| 1D12-400S1 diesel | Exhaust smoke opacity | Reduced 1.3× — per the conclusion of the report |
| 1D12-400S1 diesel | Fuel consumption | Saving of 5–7 % — per the conclusion of the report |
| Hydraulic transmission, reduction gear | Transmission noise and vibration | Reduced — per the conclusion of the report |
| Hydraulic transmission | Torque transfer | Performance improved — per the conclusion of the report |
All units of the locomotive were treated — the diesel engine, the high-pressure fuel pump, the hydraulic transmission and the reduction gear.
Conclusion of the commission
Current equivalent
- Revitalizant gel for diesel enginesDiesel engines
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
- Revitalizant gel for hydraulic systemsHydraulics · pumps · hydraulic motors
How such units are treated:
About this result:
Limits of this report: The results refer to a TGM-23B shunting locomotive with a 1D12-400S1 diesel engine operated by DAT “Ukrspetstransgaz”; on other equipment and under other duty cycles the figures may differ. The treatment was performed by TzOV “Ekor”, whose representatives are among the authors of the report.