IE A030REPORT OF FSBI “MOTOR TRANSPORT DEPOT”, ADMINISTRATIVE DIRECTORATE OF THE PRESIDENT OF THE RUSSIAN FEDERATION · 12.09.2011
Hyundai AeroExpress buses: compression rose and evened out without teardown
Compression rose in all cylinders, most strongly in the worn ones, readings by cylinder evened out. 1.5 kgf/cm² — average compression across all cylinders, D6CA engines (2–3 kgf/cm² in worn cylinders) (2011).
with signatures and stamp
Key result
| EQUIPMENT | MILEAGE AT START OF WORK | MILEAGE AFTER TREATMENT | WHAT WAS MEASURED |
|---|---|---|---|
| Hyundai AeroExpress bus, reg. no. M227OO | 220 763 km | 5 437 km | Compression across the cylinders of the D6CA engine |
| Hyundai AeroExpress bus, reg. no. M 219 OO | 226 200 km | 14 621 km | Compression across the cylinders of the D6CA engine |
What the compression measurements showed
| PARAMETER | MEASURED OBJECT | RESULT |
|---|---|---|
| Compression, average across all cylinders | D6CA engines of both buses | +1.5 kgf/cm² |
| Compression in the cylinders that read lower before treatment | D6CA engines of both buses | +2–3 kgf/cm² |
| Spread of compression between cylinders | D6CA engines of both buses | Evened out |
Measurements were taken before treatment and after it was completed — at 226 200 km on M227OO and 240 821 km on M 219 OO; the engines were not disassembled.
Conclusion of the company commission
Current equivalent
Revitalizant gel for diesel engines →
Industrial diesel engines — tractor, locomotive, marine and generator sets.
How such units are treated:
About this result:
Limits of this report: The results refer to Hyundai AeroExpress buses with D6CA diesel engines; on other equipment and under different operating conditions the figures may differ.