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BUNKER INDEX :: Price Index, News and Directory Information for the Marine Fuel Industry
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Part-load optimisation delivers bunker savings for MAN auxiliary engines

18 Jan 2018 13:23 GMT

MAN Diesel reports typical fuel oil savings of up to 5 g/kWh.



MAN Diesel & Turbo reports that its part-load optimisation initiative has achieved 180 orders since its introduction.

Part-load optimisation is a tuning method that is designed to optimize fuel oil consumption during the part-load operation of four-stroke, small-bore MAN auxiliary engines.

Finn Fjeldhoj, Head of Small-Bore, Four-Stroke Engineering at MAN Diesel & Turbo, said: "Part-load optimisation works on the principle that fuel consumption is reduced at low and part load at the expense of a higher fuel consumption in the high-load range, without exceeding the IMO NOx limit. We can deliver new engines pre-optimised, or retrofit as necessary. Both part-load optimisation solutions have proved popular with the market to date, as evidenced by this strong demand."

Part-load optimisation

Part-load optimisation is designed to help shipowners to maintain their auxiliary engines in good working order while reducing fuel oil costs. It is recommended for GenSets that often run at part-loads below 75 percent MCR (especially the load range from approximately 40 - 65 percent MCR) and optimises engine performance at 60 - 65 percent MCR.

It is available for all new Holeby engines and can be retrofitted on all existing engines. The tailor-made retrofit kits cover all components, qualified service fitters and calculations of cost benefit; engine tuning can be executed with a charge-air blow-off valve or waste gate.

Accorrding to MAN Diesel & Turbo, part-load optimisation delivers fuel oil savings of, typically, up to 5 g/kWh depending on engine type and load point, and is said to improve the condition of key engine components due to its superior combustion process.

The same, relative fuel-consumption savings are also said to apply when applied in combination with an SCR-system for IMO Tier III compliance.






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