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DIESEL ENGINE 2
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Diesel engine is defined to have following aspects:
 diesel as the input fuel
 internal combustion
 compression-ignition
 either two-stroke config or four-stroke config
INTERNAL COMBUSTION ENGINE 4
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Compression Ratio
It’s the ratio of the maximum volume to minimum
volume in the cylinder of the engine.
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Compression Ratio
 Diesel engines have high compression ratios.
 Petrol engines have lower compression ratios.
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COMPONENTS OF DESIGN
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Cylinder
It’s is the central working part of the engine, the space
in which a piston travels.
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Valves
There are inlet and outlet valves in an engine.
The inlet valves let in air and fuel, and the outlet valves
let out the exhaust fumes.
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Piston
The piston moves up and down and is a vital part of the
cylinder.
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Piston Rings
The edges, both outer and inner, in a cylinder have a
sliding seal that’s made of the piston rings.
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Connecting Rods
The piston and crankshaft are connected by the
connecting rod.
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Crankshaft
The job of this part of the diesel engine is to convert
the up and down motion of the piston into a rotational
motion.
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Camshaft
It’s a shaft with cams attached to it, for operating the
valves in the engine.
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Fuel Injector
It’s for the introduction of fuel in the cylinder.
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Diesel engine - Basic Design Components