SI AND CI ENGINE AND THEIR PARTS

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SI and CI engines are types of internal combustion engines.

SI engine stands for Spark Ignition engine, also known as gasoline engine.
CI engine stands for Compression Ignition engine, also known as diesel engine.
SI engine uses spark plugs to ignite the air-fuel mixture, while CI engine relies on compression to ignite the fuel.
SI engine has a lower compression ratio compared to CI engine.
Common parts of an SI engine include cylinders, pistons, spark plugs, intake and exhaust valves, and a carburetor or fuel injection system.
Common parts of a CI engine include cylinders, pistons, fuel injectors, intake and exhaust valves, and a fuel injection system.
Examples of SI engines include those used in cars, motorcycles, and small aircraft.
Examples of CI engines include those used in trucks, buses, ships, and heavy machinery.

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