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This animation describes the working principles of diesel engines in the context of an inline-four engine that operates in a four-stroke mode. This kind of engine has four cylinders mounted in a straight line.
Unlike the typical Otto-cycle engine, a diesel engine takes in only air through the intake valves during the 1st stroke.
During the 2nd stroke, the intake valves are closed and the air is compressed. As the air is highly compressed in the cylinder, the t
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