A stroke is a single action of certain engines. An engine is something that produces some effect from a given input. ...

In a steam, Otto or Diesel piston engine, a stroke is the action of a piston travelling the full length of its cylinder in one direction. A steam engine is an external combustion heat engine that makes use of the thermal energy that exists in steam, converting it to mechanical work. ... The four-stroke cycle of an internal combustion engine is the cycle most commonly used for automotive and industrial purposes today ( cars and trucks, generators, etc). ... The steert engine is a type of internal combustion engine; more specifically, it is a compression ignition engine, in which the fuel is ignited by being suddenly exposed to the high temperature and pressure of a compressed gas, rather than by a separate source of ignition, such as a spark... piston + connecting rod In general, a piston is a sliding plug that fits closely inside the bore of a cylinder. ... An engine is something that produces some effect from a given input. ... piston + connecting rod In general, a piston is a sliding plug that fits closely inside the bore of a cylinder. ... A piston and cylinder from a steam engine A cylinder in an internal combustion engine is the space within which a piston travels. ...

The stroke length is determined by the cranks on the crankshaft. Stroke can also refer to the distance the piston travels; for example, the phrase "This engine has a four inch stroke" means that on each stroke, the piston travels four inches. A crank is a bent portion of an axle, or shaft, or an arm keyed at right angles to the end of a shaft, by which motion is imparted to or received from it; also used to change circular into reciprocating motion, or reciprocating into circular motion. ... Crankshaft, pistons, and flywheel Continental engine marine crankshafts, 1942 For the comic strip about an old, curmudgeonly bus driver, see Crankshaft (comic strip). ... Mid-19th century tool for converting between different standards of the inch An inch is an Imperial and U.S. customary unit of length. ...

In a pistonless rotary engine, the term is applied to the corresponding rotor movement, see top dead centre. A rotary engine is an internal combustion engine that does not use pistons in the way a reciprocating engine does, but instead uses one or more rotors, sometimes called rotary pistons. ... Look up top dead center in Wiktionary, the free dictionary. ...

See also reciprocating engine. Components of a typical, four stroke cycle, DOHC piston engine. ...