IE A089TECHNICAL REPORT ON OPERATING PARAMETER MEASUREMENTS
KamAZ diesel: compression rose in all cylinders and evened out
Cylinders reached even operation, the weakest caught up with the best, idle pressure rose. 4.3–9 % — compression across the cylinders, 26.8–28.2 → 29.2–29.5; 31.6 % — pressure at idle, 1.9 → 2.5 kgf/cm² (2001).
parameter measurementssigned by customer and contractor, two round stamps
Key results
| EQUIPMENT | MILEAGE BETWEEN MEASUREMENTS | WHAT WAS MEASURED |
|---|---|---|
| KamAZ truck, diesel engine, 8 cylinders | 3,261 km (odometer 04707 → 07968 km) | Compression in all eight cylinders · pressure at idle 1100 rpm |
Compression by cylinder — before treatment and after 3,261 km
| CYLINDER | BEFORE TREATMENT | AFTER 3,261 KM | CHANGE |
|---|---|---|---|
| 1 | 28.0 | 29.5 | +1.5 |
| 2 | 27.0 | 29.3 | +2.3 |
| 3 | 28.2 | 29.5 | +1.3 |
| 4 | 28.0 | 29.3 | +1.3 |
| 5 | 27.9 | 29.5 | +1.6 |
| 6 | 27.7 | 29.3 | +1.6 |
| 7 | 28.0 | 29.2 | +1.2 |
| 8 | 26.8 | 29.2 | +2.4 |
| Average across the eight cylinders | 27.70 | 29.35 | +1.65 (+6.0 %) |
| Spread between cylinders | 1.4 | 0.3 | −1.1 |
The compression unit is not stated in the table headers of the report — values are given exactly as in the document.
Pressure at idle
| PARAMETER | BEFORE TREATMENT | AFTER 3,261 KM | CHANGE |
|---|---|---|---|
| Pressure at 1100 rpm | 1.9 kgf/cm² | 2.5 kgf/cm² | +31.6 % |
The repeat measurement was made at the same 1100 rpm and at 60 °C against 45 °C — on a more thoroughly warmed engine, where pressure is normally lower.
What the measurements showed
Current equivalent
- Revitalizant gel for diesel enginesDiesel engines
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
How such units are treated:
About this result:
Limits of this report: The results relate to the diesel engine of a KamAZ truck under the operating conditions of OJSC Dmitrovsky Avtodor; on other equipment and under a different duty cycle the figures may differ.