The shipping company Naviera de Galicia S.A. operates three cargo vessels: the M/V Mandeo and the sisterships M/V Finita R and M/V Manuela E, all powered by intermediate fuel oil 180.
After having used a classic chemical additive for four years, the company decided to evaluate the XBEE Enzyme Fuel Technology on board the cargo ship M/V Finita R. The vessel is equipped with a Wärtsilä W6L32 main engine of 2,760kW.
In order to ensure a precise and reliable monitoring of the evaluation, the following program has been carried out by the accredited laboratory Dekra:
- On 20 September 2011 gas emissions of the ship’s main engine have been measured before the first fuel treatment with XBEE.
- On 28 February 2013 the engine emissions have been measured again after 1,680 running hours on XBEE IFO 180.
- In November 2013, the ship has been overhauled after a total of 21,268 running hours of the main engine.
Finally, on 18 November 2015 the laboratory Coterena embarked onboard the M/V Finita R to measure both the 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.
Gas emissions measurements and specific fuel consumption data both show a significant improvement of the fuel combustion. The lack of correlation between a -16.5% reduction of CO2 emissions and a -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 confirm the same, as we can see a clear improvement in cleanliness of pistons, valves, and rings.
For the full report, please visit the XBEE website.