IE B024EXPERIMENT PROTOCOL AT THE MINE VEHICLE FLEET
ZIL 433: compression and oil pressure rose without engine teardown
Compression increased in all measured cylinders, the spread between them decreased, oil pressure rose. 14–33 % — cylinder compression, 18–22 → 24–26 atm; 46–50 % — oil pressure at 300–1200 rpm, 2.6–4.2 → 3.8–6.2 bar (2004).
Troyanovo-3 minesigned by five participants of the experiment
Key results
| EQUIPMENT | MILEAGE AT TEST START | WHAT WAS MEASURED |
|---|---|---|
| ZIL 433 truck, 8-cylinder engine | 53,413 km | Cylinder compression, oil pressure in the engine lubrication system |
Compression in the engine cylinders
| CYLINDER | BEFORE TREATMENT | AFTER 1556 KM | CHANGE |
|---|---|---|---|
| No. 5 | 22 atm | 26 atm | +18.2 % |
| No. 7 | 18 atm | 24 atm | +33.3 % |
| No. 8 | 21 atm | 24 atm | +14.3 % |
Measured on three cylinders out of eight, before and after on the same cylinders. The spread between them narrowed from 4 atm to 2 atm.
Oil pressure in the engine lubrication system
| ENGINE SPEED, RPM | BEFORE TREATMENT | AFTER 1556 KM | CHANGE |
|---|---|---|---|
| 300 | 2.6 bar | 3.8 bar | +46.2 % |
| 800 | 2.8 bar | 4.2 bar | +50.0 % |
| 1000 | 3.0 bar | 4.4 bar | +46.7 % |
| 1200 | 4.2 bar | 6.2 bar | +47.6 % |
Both measurement cycles were run at the same engine temperature of 45–50 °C — the conditions are directly comparable.
What the protocol recorded
Current equivalent
- Revitalizant gel for diesel enginesDiesel engines
- Revitalizant gel for gearboxesGearboxes · transmissions · gear drives
How such units are treated:
About this result:
Limits of this report: The results refer to a ZIL 433 truck with an 8-cylinder engine in open-pit mine service; on other equipment and under other operating conditions the figures may differ. The experiment was carried out with the participation of the XADO distributor May OOD, Plovdiv.