Draw indicated Diagram of S.I./C.I. engine and explain

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Accepted Answer

A S.I./C.I. engine is a type of internal combustion engine that operates on either spark ignition or compression ignition.

S.I. engine stands for Spark Ignition engine, where the fuel-air mixture is ignited by a spark plug.
C.I. engine stands for Compression Ignition engine, where the fuel-air mixture is ignited by the heat of compression.
In a S.I. engine, the fuel-air mixture is drawn into the cylinder during the intake stroke, compressed during the compression stroke, ignited by a spark plug during the power stroke, and the exhaust gases are expelled during the exhaust stroke.
In a C.I. engine, only air is drawn into the cylinder during the intake stroke, compressed during the compression stroke, and then fuel is injected into the cylinder, which ignites due to the high temperature and pressure.
S.I. engines are commonly used in gasoline-powered vehicles, while C.I. engines are used in diesel-powered vehicles.
Both types of engines have their advantages and disadvantages in terms of efficiency, power output, emissions, and fuel consumption.

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