IE A059MEASUREMENT PROTOCOLS No. 1–4 · DEPARTMENT EXPLANATORY MEMO
KT-6 locomotive compressors: harder cylinders, lower current and oil use — no disassembly
Cylinder walls became harder, current draw dropped, compressor oil consumption fell. 6–25 % — cylinder wall hardness, 269–278 → 292–347 HB; 18.4 % — compressor current draw, 19 → 15.5 A (2003).
and explanatory memo of the railway department
Key results
| TRACTION UNIT / COMPRESSOR | CONDITION AND TREATMENT SITE | WHAT WAS MEASURED |
|---|---|---|
| OPE-1 No. 344, KT6 No. 1 | In service, 2 years 5 months of operation; treated on the locomotive | Output, oil consumption |
| OPE-1 No. 344, KT6 No. 2 | In service, 2 years 5 months of operation; treated on the locomotive | Output, oil consumption |
| OPE-1 No. 294, KT6 No. 2 | After overhaul; treated on the depot run-in bench | Cylinder wall hardness, current draw |
| OPE-1 No. 343, KT6 No. 2 | After overhaul; treated on the depot run-in bench | Output, oil consumption |
| OPE-1 No. 317, KT6 No. 1 | After overhaul; treated on the depot run-in bench | Output, oil consumption |
Cylinder wall hardness and current draw — compressor of OPE-1 No. 294
| PARAMETER | BEFORE TREATMENT | AFTER 2 H RUN-IN | CHANGE |
|---|---|---|---|
| Stage 1 cylinder No. 1, previously in service | 269 HB · 23.1 HRC | 297 HB · 29.3 HRC | +28 HB · +6.2 HRC |
| Stage 1 cylinder No. 2, new | 275 HB · 24.7 HRC | 292 HB · 30.3 HRC | +17 HB · +5.6 HRC |
| Stage 2 cylinder, new | 278 HB · 26.5 HRC | 347 HB · 31.0 HRC | +69 HB · +4.5 HRC |
| Current draw on the bench | 19 A | 15.5 A | −3.5 A |
Three hardness measurements per cylinder: before treatment, after 30 minutes and after 2 hours of run-in. The protocol sums the increase as 5–6 HRC units.
Compressor output on locomotives, air system fill time
| TRACTION UNIT / COMPRESSOR | AFTER TREATMENTS No. 1 / No. 2 / No. 3 | AFTER 3 DAYS | AFTER 20 DAYS |
|---|---|---|---|
| OPE-1 No. 344, KT6 No. 1 | 70 / 60 / 51 s | 45 s | 44 s |
| OPE-1 No. 344, KT6 No. 2 | 70 / 65 / 54 s | 48 s | 44 s |
| OPE-1 No. 343, KT6 No. 2 | 55 s (after treatment No. 3) | 51 s | 39 s |
| OPE-1 No. 317, KT6 No. 1 | 58 s (after treatment No. 3) | 51 s | 44 s |
Air system fill time as per the air brake instructions; a shorter time means higher output. Measured on locomotives in service.
Conclusion of the railway transport department
Current equivalent
- Revitalizant gel for compressors and bearingsCompressors · bearings · spindles
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
- Revitalizant gel for diesel enginesDiesel engines
How such units are treated:
About this result:
Method for this machine:
Limits of this report: The results relate to KT-6 locomotive compressors of OPE-1 traction units used in the industrial rail transport of a mining and processing plant; with other units and operating modes the figures may differ. Measurement protocols No.