[VQ Fan]

Mazda has filed a patent in the U.S. for a new engine technology that appears to meld its existing compression-ignition Skyactiv-X tech with a supercharger... and the whole thing is two-stroke?

That last part really confuses me. Bolt a supercharger to a Skyactiv-X engine and add some patented new intake and exhaust trickery to make that work smoothly, but two-stroke?

Mazda has a sort of a history with two-stroke in that a rotary is debatably sort-of a two-stroke, but this is very much a piston engine. Any thoughts on what they're up to here?

The full doc is attached in pdf form, but here's a screenshot of the first page to get you started:

 

[THaskins]

When I first saw that it was a two stroke engine I thought it might be used as a range extender for the MX-30 but that doesn't make sense if it's supercharged.

I'm pretty stumped about what this could be used for. I doubt Mazda has plans for putting it in a motorcycle.

 

[zenki]

It also seems to be a more fuel efficient engine, which has me wondering how efficient it would be in the real world.