Caption: An internal-combustion engine goes through four strokes: intake, compression, combustion (power), and exhaust.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 25.44 MB

Caption: The four strokes of a four-stroke cycle engine - intake, compression, power, and exhaust. Only the intake stroke delivers power.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 19.18 MB