In order to ensure a precise and reliable monitoring of the evaluation, the following program has been carried out by the accredited laboratory Dekra:
Finally, on November 18, 2015 the laboratory Coterena embarked onboard the M/V Finita R to measure both gas emissions of the main engine for the third time after 27,992 running hours, and the specific fuel consumption.
This data has then been compared to Wärtsilä’s own protocol data.
| Report by Dekra | Without XBEE | With XBEE | Difference |
|---|---|---|---|
| Temperature (°C) | 296 | 254 | -14.22% |
| Flue gas speed (m³/h) | 15,020 | 15,498 | +3.18% |
| O2 (%) | 13.0 | 14.7 | +13.32% |
| CO2 (%) | 6.5 | 5.4 | -16.50% |
| CO (mg/m³) | 77.0 | 65.9 | -14.41% |
| NOx (mg/m³) | 1,866.0 | 788.9 | -57.72% |
| SO2 (mg/m³) | 1,984.0 | 680.3 | -65.71% |
| COT (mg/m³) | 26.1 | 33.7 | -29.22% |
| Report by Coterena | Wärtsilä data | XBEE IFO 180 | Difference |
|---|---|---|---|
| Power (kW) | 1,676.7 | 1,689.6 | |
| Speed (RPM) | 750.0 | 754.7 | |
| Specific fuel consumption (g/kWh) | 199.90 | 190.5 | -4.67% |
Gas emissions measurements and specific fuel consumption data both show a significant improvement of the fuel combustion. The lack of correlation between -16.5% reduction of CO2 emissions and -4.67% reduction of fuel consumption is explained by the fact that consumption is based on Wärtsilä’s protocol data supplied by the laboratory.
Moreover, the pictures here above confirm the same, as we can see a clear improvement in cleanliness of pistons, valves, and rings.
