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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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| When combined with computer-controlled direct fuel injection (DFI), such as Mercury Optimax, these engines are low emission but do consume typically more fuel than an electronic fuel-injected (EFI) four-stroke engine of the same horsepower. Today, two-stroke engines are on their way out and more environmentally friendly four-stroke engines have taken their place. The big-bore sport/utility KingQuad 700 ATV has a 695cc fuel-injected four-stroke engine, independent rear suspension, front differential lock and hydraulic disc brakes. |
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