four-stroke engine

(redirected from Four-stroke cycle)
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Related to Four-stroke cycle: Compression stroke, Intake stroke
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Synonyms for four-stroke engine

an internal-combustion engine in which an explosive mixture is drawn into the cylinder on the first stroke and is compressed and ignited on the second stroke

References in periodicals archive ?
During the four-stroke cycle, you might find that the exhaust stroke is not fully successful some of the exhaust gases remain within the cylinder, which might mix with the incoming intake charge.
Name the four-stroke cycle of an internal combustion engine.
Granted, there's a lot going on during the four-stroke cycle of a gasoline engine, but that's the gist of it.
The timing of these two valves maintains pressure in the crossover passage at or above firing levels throughout the four-stroke cycle. By not having to recompress the gas in the power cylinder before combustion as is required in other split-cycle designs, the Scuderi engine can operate at a higher efficiency with fewer harmful emissions.
Diesels operate on a two-or four-stroke cycle and, in the former, fresh air is blown into the cylinder and burned gas is driven out as the piston passes the exhaust point.
Whether two stroke cycle (2SC) or four-stroke cycle (4SC), all engines must intake fresh air charge, purge spent gases and then intake another fresh air charge.