The Mechanics: The Combustion
(Power) Stroke:
(Power) Stroke:
When the piston reaches the top
of its stroke, the fuel/air mix is
ignited by an electric spark from
a spark plug.
The explosion or combustion
forces the piston back down the
cylinder (like a foot pushing on a
bicycle pedal)-this is when the
horsepower is generated and the
engine is turned.
of its stroke, the fuel/air mix is
ignited by an electric spark from
a spark plug.
The explosion or combustion
forces the piston back down the
cylinder (like a foot pushing on a
bicycle pedal)-this is when the
horsepower is generated and the
engine is turned.
