A four-stroke diesel engine works by converting chemical energy from diesel fuel into mechanical energy through a four-stroke combustion cycle. The four strokes are:
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IntakeThe inlet valve opens, and the piston moves down to draw air into the cylinder.
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CompressionThe inlet valve closes, and the piston moves up to compress the air in the cylinder.
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CombustionDiesel fuel is injected into the cylinder before the piston reaches the top, and the fuel ignites.
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Exhaust
The piston moves down and reaches the top, pushing exhaust out through the exhaust valve.
The pistons move up and down, and the crankshafts connected to the pistons move up and down in response. This linear motion creates rotary motion that turns the machinery’s wheel forward.
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