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Power Stroke

The working stroke of a piston.

As the piston approaches top dead centre the fuel-air mix is ignited.
: The fuel-air mix ignites and expands, as it expands it forces the piston down.
: As the piston is forced down this force is applied through the conrod to the crank and is transformed into a rotation of the crank.

: The combustion and expansion is complete at the end of the Power Stroke, at bottom dead centre.

See also: Compression Stroke, Expansion Period, Internal Combustion Engine, Piston.

Subjects: Engines