The next engine milestone after Skyactiv-X

Mazda is diligently working to save the internal combustion engine from a slow death brought on by electric vehicles. The independent Japanese automaker has been perfecting the ICE for decades with its Skyactiv line, including the Skyactiv-G and new Skyactiv-X. The latter is particularly interesting as it combines the strong points of both a gasoline- and diesel-powered engine without either of their weak points. Skyactiv-X is set to arrive in showrooms sometime in the next year. Nevertheless, the automaker isn’t resting on its laurels.

Mazda is already looking at the next project – Skyactiv-3. It’s a new gasoline engine designed to increase thermal efficiency by roughly 27 percent, making the engine 57 percent thermally efficient. That’s far better than even the most effacement engines out there. By comparison, Toyota’s new 2.5-liter Dynamic Force four-cylinder is said to have a thermal efficiency of 40 percent. Mazda says the Skyactive-3’s efficiency means it will achieve well-to-wheel emissions similar to an EV.

What’s well-to-wheel emissions? It’s the overall CO2 emissions emitted from the time oil leaves the well to the time it propels a vehicle. This includes the mining and processing of crude oil.

There is still much work to be done on the Skyactiv-3 powertrain, of course. Mazda is just now launching its gasoline compression-ignition engine, Skyactiv-X, to market, so it will be at least several years before the third-generation of Skyactiv engines are ready for the road.

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