Do These Patents Show Mazda’s New Turbocharged Rotary Engine?

A pair of patents filed by Mazda earlier this year detail a turbocharged rotary engine that, if put into production, will power the long-awaited RX-7 (and RX-8) successor.

Mazda has been very open about its desire to bring a new rotary-powered sports car to the market in recent years, but consistently said it wouldn’t do so until it had developed an engine that would meet its efficiency targets. This might be an indication that is has finally done it!

Motoring notes that the engine detailed in the renderings incorporates a new side-port exhaust arrangement which could improve intake efficiency. Additionally, there is a new turbocharger design bespoke to this powertrain.

The patent applications were filed in Japanese but a translation from Garage Alpha provide further details about the innovative powertrain and highlights the improved efficiency it has over previous implementations.

Also Read: Mazda Confirms Rotary’s Return As An EV Range Extender In Paris

The Japanese car manufacturer intends on introducing a rotary engine as a range extender for its forthcoming electric vehicles but it doesn’t appear as though the engine detailed in these patents is meant for that – at least not solely.

There have been long-held hopes that Mazda’s stunning RX-Vision Concept from 2015 would make it into production, perhaps in time for the carmaker’s centenary in 2020. However, Mazda research and development chief Kiyoshi Fujiwara denied that as a possibility back in October 2017. He did, however, indicate that there will come a day when a new rotary-powered Mazda sports car becomes a reality.

“We have still been developing rotary engines as a sports car. Technology is going well but if we launch this kind of model later, we will have to add more technology to it, like autonomous driving, electrification…” he said.

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  • Six_Tymes

    very interesting

    • 2PacOfCarscoop

      its not really an S2000, Tho…

      • Jay_Sam

        its not really a Honda, Tho…

        • Honda NSX-R

          its not really going to be in production, Tho…

          • Bash

            Its not really a news, Tho…

          • Jason Miller

            Says you?

      • Matteo Tommasi

        It’s better, WAY better

  • Bo Hanan

    Another pretty car with a bad engine in it from Mazda. Let the rotary die already…

    • Netsphere

      another idiot on car site, die already

      • Bo Hanan

        or, you could kiss my A$$. That’s always an option available to you.

        • Able

          You guys are so mature. Did you graduate kindergarten?

          • Bo Hanan

            Yes. You were there too.

    • Nexus7

      Exactly. What’s more, the pretty body will rust, as do all Mazdas.

      • Aj

        I’m currently on my 6th mazda, no rust here. If your car is getting rusty then maybe you’re not taking care of it

  • Brian Regan

    Screw the rotary. Just give us this car already.

  • Jason Miller

    Bring it on.

  • Mr Mister

    This looks like they made two separate rotary chambers in the block, and then they feed separate turbine wheels. To me this seems like they’re attempting a sort of cylinder deactivation, where for efficiency they’d shutoff an entire chamber. I wouldn’t be surprised if 42 is a storage tank for compressed air that it could feed at low RPM to remove turbo lag. Couple it with some electrification (I could see a situation where for normal driving it’d have a single rotor chamber that’d mostly be used to recharge a battery – like the Chevy Volt; and then for spirited driving they’d kick in extra rotor chambers for more power). Also, they could have a motor that spools to the turbos – say after you shutoff the car to let them cool down and oiled, where they’d charge the compressed air tank (and then when driving excess air off the turbos could be used to refill the tank or to turn the motor and regenerate some electricity).

  • Biggsy

    Don’t get too excited, the rotaries are being used as range extenders, not the one and only power source.

  • Bo Hanan

    I count 6 & 6.
    And you need reading glasses too. But- kissing my a$$ is still available to you.

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