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 ?
Brothers Matt, 13, and Joe Edwards, 10, the current British 4-stroke and 2-stroke junior champions, continued their success with first and second places in their respective classes.
Ricardo claims the engine achieves such feats by being able to shift seamlessly between 2-stoke and 4-stroke cycles.
announced that it will display its full lineup of 4-stroke marine outboard engines at the Japan International Boat Show 2008 in Yokohama (Thursday, March 6 ~ Sunday, March 9, 2008 at Pacifico Yokohama in Yokohama, Japan).
Marcus Bradshaw, director of BBLB Architects in Redditch, Worcestershire, formed the Construction Racing team to take part in the Honda Formula 4-Stroke Championships to raise pounds 1 million for the Get-A-Head charity.
Tyneside is hosting the second round of the 2006 Formula 4-Stroke Series which casts off from Sandhaven Beach, South Shields, on Saturday and Sunday, with 30 teams battling it out for top honours in the 150hp and 225hp championships.
The UK's top powerboat competition will take place on Tyneside for the first time this summer after organisers decided South Shields offered a perfect backdrop for the Honda Formula 4-Stroke series.
The 4SLB category is defined as a 4-stroke engine that is not a rich burn.
Tenders are invited for Acquisition of Parts, Accessories and Repair Services for Forestry Equipment 4-Stroke Engines - Ds Timis
Range is 165 miles on just 40 gallons of fuel (powered with 4-stroke 150).
HYDERABAD -- The Sindh High Court here Tuesday ordered the Sindh Transport Authority (STA) to submit reply in a petition accusing the Authority of unlawful crackdown on 4-stroke CNG rickshas in Sanghar district.
The aircraft, a modified, commercially-available, lightweight single-seater, uses a combination of a 4-stroke piston engine and an electric motor, which could also turn into a power generator.