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THE FUEL SYSTEM

THE FUEL SYSTEM. Read the text on pp. 148-149 and answer the following questions: What is fuel specific gravity? What is viscosity? What is the flash point? What is the pour point? What is specific energy? What is solubility? What is the cetane number? What is the sediment?

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THE FUEL SYSTEM

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  1. THE FUEL SYSTEM Read the text on pp. 148-149 and answer the following questions: • What is fuel specific gravity? • What is viscosity? • What is the flash point? • What is the pour point? • What is specific energy? • What is solubility? • What is the cetane number? • What is the sediment? • What is stability? • What is carbon residue? • What is the cloud point? • What is ash? • What is sulphur?

  2. THE FUEL SYSTEM Read the text on pp. 148-149 and answer the following questions: • Specific gravity – density of the fuel compared to that of water. • Viscosity – resistance of a liquid when flowing. • Flash point – temperature at which fuel may be ignited (plamenišče). • Pour point – temperature at which the fuel can still be handled (točkatečenja). • Specific energy – calorific value of 1 kg of fuel. • Solubility – ability of a fuel to mix with another fuel. • Cetane number – the ease at which fuel+air will ignite.

  3. THE FUEL SYSTEM Read the text on pp. 148-149 and answer the following questions: • Sediment – non-organic substances in a fuel. • Stability – how many sediments will be formed. • Carbon residue – amount of carbon deposit in nozzles, piston rings, etc. • Cloud point – temperature at which fuel will become hazy (motnišče). • Ash – non-organic non-combustible materials in a fuel. • Sulphur – high amount can cause corrosion.

  4. THE FUEL SYSTEM – tanks (p. 152) • SHORE-BASED TANKS – tanks on the shore in which bunkers are kept. • BUNKERTANKS – spaces on board a vessel to store fuel. • SETTLING TANKS – where the fuel is heated to lower the viscosity grade and separate of fuel from water and impurities. • DAILY SERVICE TANKS – provides the engine with fuel. • GRAVITY TANKS – settling tanks + daily service tanks. • MIXING TANKS (VENT TANK, BUFFER TANK, CIRCULATING TANK) – mix HFO + MDO to ensure gradual transition from HFO to MDO.

  5. THE FUEL SYSTEM – p. 156/3 HFO • A • K • L • G • C • D • B • E • I

  6. THE FUEL SYSTEM – p. 156/3 MDO • H • N • M • J • F

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