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 ?
Introduced in 2008, the Prowler XTX 700 H1 returns in 2009 with a 695cc single-cylinder, four-stroke engine with electronic fuel injection.
The power of the 545cc single-cylinder four-stroke engine is fed through an automatic transmission that features two- and four-wheel drive and a front locking differential.
Yes, this roadster much loved by learners, commuters, riding schools and teenagers since 1991 is being axed, making way for the all-new CBF125 with its heavily revised, fuel-injected 125cc single cylinder, air-cooled four-stroke engine that boasts a peak output of 11.
But if our coastal waters and sands have become a magnet for fans of ear-splitting water-sports and bike-racing, it has been at the expense of the peace and quiet and safety craved by those who wish to escape the tyranny of the two or four-stroke engine.
It uses a fuel-injected 125cc four-stroke engine and at pounds 1,699 is the cheapest new Suzuki on offer.
The car can run for up to four hours or 250 miles with no emissions and on longer journeys a tiny four-stroke engine can be used to power an electrical generator, allowing the car to travel for around 1,000 miles between fuel stops.
Powered by a single-cylinder 200cc four-stroke engine, the canvas-roofed four-door toddler is being touted as a motorised alternative to Pakistan's smoky and smelly rickshaws.
While the service identified the reduction in snowmobile traffic as the primary reason for air quality improvements, it also pointed to the role played by both weather and the four-stroke engine requirement.
The engine in question isn't your typical weed whip's two-stroke, but a high-value design that mimics a typical automotive four-stroke engine design with overhead cams, poppet valves, and cylinder scavenging via a supercharger.
The new V6 engine weighs 519 pounds, more than 100 pounds lighter than a four-stroke engine with the same power.
Built around a strong aluminium platform with the upper half constructed over a roll bar system, the Be Up is powered by a 505cc twin cylinder, four-stroke engine coupled to a CVT-type auto transmission driving the front wheels.
Its four-stroke engine of 50 cc, featuring high fuel efficiency and durability, was considered a revolutionary technology in the late 1950s when two-stroke engines were the norm, according to Honda.