The Four Stroke Cycle
combustion chamber and the minimum volume, so when the piston is at the bottom and top of its stroke respectively. The power stroke is the next stroke in the Otto cycle and is also the start of the second revolution of the engine. A fine mist of diesel is then injected into the combustion chamber; the atomised fuel spontaneously igniting as it meets the hot air. Meanwhile, a second chamber, which blankets the combustion chamber, has its air content heated to a high degree by heat passing through the cylinder wall. The second piston may also be used to increase the expansion ratio, decoupling it from the compression ratio. The exhaust valve opens slightly before the stroke begins. Though the heat energy that is lost through the exhaust can be used to drive a turbocharger so it can't be all that bad, can it? These were double-acting, tandem engines and sold under the name "Kilmarnock".
The, four, stroke, cycle - webBikeWorld
Most conventional automotive diesel engines make use, like petrol engines, of a four-stroke cycle. The engine is now ready for the next cycle to begin, so the intake valve opens and another batch of air with a tiny bit of gas is drawn into the cylinder. Such variants may have ten or more strokes per cycle. Citation needed Revetec engines edit The controlled combustion engines, designed by Bradley Howell-Smith of Australian firm Revetec Holdings Pty Ltd, use opposed pairs of pistons to drive a pair of counter-rotating three-lobed cams through bearings. 3 4 Griffin went out of business in 1923. It is also possible to charge two working cylinders with one piston charger. A b c "A brilliant six-stroke from techies".
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