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Wärtsilä Automatic Fuel Switch and Marine Diesel Fuel Cooler Unit - 2 Pages

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Catalogue excerpts

Wärtsilä Automatic Fuel Switch and Marine Diesel Fuel Cooler Unit Vessels operating in the Sulphur Emission Control Areas (SECAs) need to cut Sulphur Oxides (SOX) emissions according to the revised Marpol Annex VI, which contains regulation on prevention of air pollution from ships. The Wärtsilä Automatic Fuel Switch and Marine Diesel Fuel (MDF) Cooler Unit is a solution for low sulphur fuel adaptation for vessels operating in the SECA, changing from Heavy Fuel Oil (HFO) operation to continuous or temporary operation on Light Fuel Oil (LFO). The Automatic Fuel Switch, which controls the temperature change before the fuel injection equipment is together with the MDF Cooler Unit a solution for fuel switching from HFO to LFO and vice versa. The MDF Cooler Unit, which ensures controlled cooling, correct fuel oil injection viscosity and temperature, is a solution for continuous LFO operation. Automatic Fuel Switch HFO has to be kept hot and MDF cool, changing from one to another, is more complicated than just turning a valve. Too fast fuel temperature change may cause uncontrolled clearance adaptation in the injection pumps, a thermal shock. Furthermore, an uncontrolled changeover may cause severe damage on the injection equipment and increase in maintenance and spare part costs. In worst scenarios it may cause complete lack of propulsion power. The Wärtsilä Automatic Fuel Switch has integrated safety systems, data logger and trends. Those provide a real time bar graph of

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Automatic Fuel Switch Module the HFO and Marine Fuel Oil (MFO) ratio (based on user input) consumed by the engine. This enables following up the fuels ratio and sulphur content consumed by the engine, and thus optimizing the start of changeover process. Also the Fuel Switch has an emergency start in case of starting problems with MDF. With the Automatic Fuel Switch the fuel changeover can be started at the correct time, bringing also fuel cost savings as less MDF is burnt. MDF Cooler Unit Too low fuel viscosity may, in severe cases, result in loss of capability to produce full power or cause starting...

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