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Mazda's latest patent shows twin-turbo, supercharged engine

Mazda's latest patent shows twin-turbo, supercharged engine image

Jose Altoveros / United States Patent and Trademark Office | August 18, 2017 15:53

Mazda could be building another engine aside from the Skyactiv-X

Recently, Mazda has announced plans for a new revolutionary engine that relies on high compression for ignition called Skyactiv-X. The said engine will reportedly combine mileage of a diesel engine and the clean output of a gasoline engine; set to be introduced in early 2019. However, a recent patent discovery by Road and Track leads us to believe that the Skyactiv-X may not be the only engine the Hiroshima automaker is working on.

Published by the United States Patent and Trademark Office on August 17, it showcases a gasoline engine that uses two turbochargers and an electric supercharger. The turbos and supercharger work parallel in order to obtain maximum power output.

Mazda's latest patent shows twin-turbo, supercharged engine

Called 'Supercharging Device for Engine', reading the text in the application says that the electric supercharger would provide bottom end power, while the twin-turbo would provide top end output. The concept is similar to twin-charging an engine, wherein a turbo and a supercharger work together to have a better powerband.

For those who do not know, turbochargers are usually laggy and work best above a certain rpm as exhaust gasses build up. Meanwhile, a supercharger works best at the bottom end, but usually loses efficiency once the rpm increases. Having a twin-charged setup would theoretically cancel out the negative effects of both setups, creating am efficient and powerful engine.

Mazda's latest patent shows twin-turbo, supercharged engine

Apart from the engine setup, the patent also states that the engine will be used for rear-wheel drive applications. At the moment, Mazda's only rear-wheel drive vehicle is the MX-5. It seems unlikely that the MX-5 would use the engine, but possibly be reserved for another upcoming rear-drive model.

Like most patents, it is possible that this engine will not over see production. It also remains uncertain whether this engine is related to the Skyactiv-X as both of them are supercharged. Regardless, we will have to wait and see what Mazda is up to.

Source: US Patent and Trademark Office via Road and Track