INDUSTRIAL CASE STUDY|METALLURGY · RAILWAY SHOP|SHUNTING LOCOMOTIVE · DIESEL ENGINE
REPORT ON MEASUREMENTS BEFORE AND AFTER TREATMENT WITH XADO TECHNOLOGY
TGM-40 locomotive: compression and oil pressure up without teardown
PRODUCTTreatment with XADO technologyunder contract No. 7/11 of 07.10.2000 · without engine teardown
TEST OBJECTTGM-40 locomotivediesel engine, 12 cylinders · shunting duty in the plant railway shop
DOCUMENT TYPEReport on parameter measurements
signatures of both parties, seals of the plant and the contractor
signatures of both parties, seals of the plant and the contractor
Key results
↑12-21.7%
compression on all 12 cylinders, 23-25 → 28
↑17.3%
oil pressure at 45 °C, 5.2 → 6.1 kgf/cm²
| EQUIPMENT | CONDITION AT THE START OF TESTING | WHAT WAS MEASURED |
|---|---|---|
| TGM-40 locomotive, railway shop of the plant | In service; compression 23-25 on all cylinders, oil pressure 5.2 kgf/cm² | Compression on each of the 12 cylinders; oil pressure at an oil temperature of 45 °C |
Compression by diesel engine cylinder
| CYLINDER | BEFORE TREATMENT | AFTER TREATMENT | CHANGE |
|---|---|---|---|
| No. 1 | 23 | 28 | +21.7 % |
| No. 2 | 24 | 28 | +16.7 % |
| No. 3 | 24 | 28 | +16.7 % |
| No. 4 | 23 | 28 | +21.7 % |
| No. 5 | 25 | 28 | +12.0 % |
| No. 6 | 25 | 28 | +12.0 % |
| No. 7 | 25 | 28 | +12.0 % |
| No. 8 | 24 | 28 | +16.7 % |
| No. 9 | 23 | 28 | +21.7 % |
| No. 10 | 25 | 28 | +12.0 % |
| No. 11 | 24 | 28 | +16.7 % |
| No. 12 | 24 | 28 | +16.7 % |
Compression is recorded in the report without a unit of measurement, so the change for each cylinder is given in relative terms.
Oil pressure in the engine lubrication system
| PARAMETER | BEFORE TREATMENT | AFTER TREATMENT | CHANGE |
|---|---|---|---|
| Oil pressure at an oil temperature of 45 °C | 5.2 kgf/cm² | 6.1 kgf/cm² | +17.3 % |
Higher pressure in the lubrication system indicates restored clearances in the engine friction pairs.
What the measurements showed
The TGM-40 locomotive of the plant railway shop was treated with XADO technology without engine teardown — the machine stayed in service. Measurements taken by the head of the shop together with a representative of the contractor recorded higher compression in all twelve cylinders: from an initial 23-25 the readings rose to 28. Compression does not rise above the rating set by the engine manufacturer, so an increase across the whole set at once means restored sealing of the cylinder-piston group rather than luck on a single cylinder. Even compression means even diesel operation: steady power output and stable fuel consumption. At the same time oil pressure rose, 5.2 → 6.1 kgf/cm² at the same oil temperature of 45 °C — a sign of restored clearances in the friction pairs of the lubrication system. The report was approved by the chief engineer of the plant and certified with the seals of the customer and the contractor.
The results apply to a TGM-40 shunting locomotive with a diesel engine operating in the railway shop of a steel plant; on other equipment and under other operating conditions the figures may differ. The original report of 20.02.2001 with signatures and seals is published in full and available for download.
Current equivalent
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
- Revitalizant gel for diesel enginesDiesel engines
How such units are treated: