Engines. TYPE OF ENGINES Depends on fuel Depends on location Depends on working principles.

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Presentation transcript:

Engines

TYPE OF ENGINES Depends on fuel Depends on location Depends on working principles

TWO STROKE PETROL ENGINE Piston moves down transferring fuel-air mix to cylinder and ejecting exhaust Piston moves up - compression and ignition. Suction of new mix in the sump [Goring, L.1990, Marine inboard engines: petrol and diesel, London: Adlard Coles]

LOOP SCAVENGING [Goring, L.1990, Marine inboard engines: petrol and diesel, London: Adlard Coles] How two stroke engine work

FOUR STROKE CYCLE [Goring, L.1990, Marine inboard engines: petrol and diesel, London: Adlard Coles] Two stroke vs. four stroke

Volume-Pressure diagram [Calder, N, 1996, Marine Diesel Engines, Shrewsbury: Waterline]

TWO STROKE DIESEL First stroke [Goring, L.1990, Marine inboard engines: petrol and diesel, London: Adlard Coles]

TWO STROKE DIESEL Second stroke [Goring, L.1990, Marine inboard engines: petrol and diesel, London: Adlard Coles]

How marine engines are different from others? Down rated 10% or less Installation considerations Materials Cooling system Gearing