four-stroke cycle

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four-stroke cycle

[¦fȯr ¦strōk ′sī·kəl]
(mechanical engineering)
An internal combustion engine cycle completed in four piston strokes; includes a suction stroke, compression stroke, expansion stroke, and exhaust stroke.

four-stroke cycle

four-stroke cycle
Induction stroke.
four-stroke cycle
Compression stroke.
four-stroke cycle
Power stroke.
four-stroke cycle
Exhaust stroke.
The sequence of operations by which a reciprocating engine converts heat energy into mechanical energy. During the induction strokes, the fuel-air mixture is inducted into the engine. During the compression stroke, the mixture is compressed. The power stroke follows, during which the mixture is ignited and the resultant rapid increase in pressure drives the piston downward. The exhaust stroke is last, during which the products of combustion are ejected.
References in periodicals archive ?
Currently, there is not a category for 4 cycle engine or motor oils.
Green Earth Technologies [Pink Sheets:GETG] is pleased to announce that results of recent tests conducted by a nationally recognized, independent research and development firm show that Green Earth's newest G-OIL(TM) product, the 10W-30 in automotive and off-road 4 cycle engine oil, biodegraded over 90 percent in just nine days, easily surpassing standards for an Ultimate Biodegradable rating.
G-OIL(TM) 10W-30 Engine Oil is available now for off-road and recreational use in 4 cycle engines that require 10W-30 and SAE 30 and is scheduled to be available in the fall of 2008 for automotive applications in 10W-30, 5W-30 and 10W-40 grades.