Mazda patent hints at twin-turbocharged supercharged engine
The electric supercharger would provide boost at low rpm, while the turbos would take over at higher engine speeds.
Technical drawings published by the United States Patent and Trademark Office (USPTO) suggests Mazda is working on a high-performance engine unlike any it has built in the past.
Uncovered by Road & Track, the patent application includes a diagram of an engine fed with two turbochargers and an electric supercharger. The text explains the supercharger would provide boost at lower revolutions, while the two turbos would take over at higher engine speeds.
The application doesn't mention where the electric supercharger would get its power from. Road & Track speculates it might be fed by Mazda's i-Eloop system, which captures the energy generated while braking and feeds it to an on-board supercapacitator. From there, it's dispatched to electric components like the A/C, the sound system, and the headlights.
The supercharged and twin-turbocharged setup could be used to power both gasoline- and diesel-burning engines. That doesn't necessarily mean it will, though.
Automakers routinely patent ideas and trademark nameplates to protect their intellectual property. Sometimes these applications provide insight into what the future holds for the applicant, but there are numerous times when nothing comes of it.
We'll have to be patient to find out if a twin-turbocharged and supercharged Mazda is right around the corner. The compression-ignition Skyactiv-X engine is coming in 2019, so we know the Japanese company is capable of wild, improbable, and awesome things under the hood.