DIESEL ENGINE
PROPULSION ENGINEERING
PRESENTED TO: 3/E CHRISTOPHER S. ABRIGOS ENGINEERING
MARPOW- BSMT-2-F (GROUP 4)
WHAT IS DIESEL ENGINE
PROPULSION?
Type of INTERNAL COMBUSTION ENGINE used in ships.01
Operates on COMPRESSION IGNITION PRINCIPLE.
Converts CHEMICAL ENERGY (Fuel) → MECHANICAL ENERGY
(Propeller motion).ENGINEERING
HOW IT WORKS? 02
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Air compressed in cylinder → temperature rises.
Diesel fuel injected into hot compressed air.
Spontaneous ignition occurs.
Piston moves downward → drives crankshaft.
Crankshaft rotates propeller shaft → ship moves
forward.
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ENGINEERING Diesel engine drives propeller directly via gearbox. The
Engine is located fixed near propeller, less flexible layout.
KEY CHARACTERISTIC:ENGINEERING
BEST FOR:ENGINEERING
Fishing boats, Bulk carriers, Container ships, Tankers,
Ferries, Recreational boats, etc.
Their adaptability and scalability make them the go-to
choice for both small craft and large ocean-going
ships.ENGINEERING
ADVANTAGES
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ideal for long voyages.
continuous operation capability.
cheaper fuel, less maintenance.
fast speed adjustments.
high power-to-size ratio.
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DISADVANTAGES
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Noise & vibration.
Air pollution (NOx, SOx, particulate matter).
Heavy & bulky structure.
High initial purchase cost. ENGINEERING