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Mazda announces SKYACTIV-X: gasoline Spark Controlled Compression Ignition

Green Car Congress

In light of the rapid changes taking place in the automotive industry, the new vision takes a longer-term perspective and sets out how Mazda will use driving pleasure—the fundamental appeal of the automobile—to help solve issues facing people, the earth and society. the greatest contribution to reducing carbon dioxide emissions.

Mazda 186
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Porsche's New Six-Stroke Engine Explained

The Truth About Cars

While there are actually several different designs for six-stroke engines, some of which are nearly as old as the automobile itself, they never took off due to the relative increase in mechanical complexity. Although, they do still see routine use on the massive diesel engines used for large container ships.

Porsche 109