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Mazda hard at work on Skyactiv 2 engine technology

As Mazda continues the current rollout of its still-new Skyactiv technology, the automaker is already looking at improving its family of engines for even better fuel economy and emissions reductions. Automotive News reports that with stricter fuel economy and emissions regulations planned for 2020 and 2025 in Europe, Mazda will likely release engines with next-generation Skyactiv 2 technology by the end of this decade, and Skyactiv 3 units just five years later.
The latter is expected to focus on improved engine cooling and lessening energy losses, but the big news in AN's report is that the next-gen Skyactiv 2 engines will use Homogeneous Charge Compression Ignition, or HCCI. This type of ignition is very similar to how a diesel engine operates (with high compression and using the compression stroke for fuel combustion rather than spark plugs), a method said to provide a cleaner and more efficient fuel burn - to the tune of a 30-percent improvement in fuel economy compared to current Skyactiv engines. Other automakers, including Hyundai, have already announced they are developing HCCI powerplants with similar technology and characteristics, so Mazda likely won't be a lone wolf here.
Equipped with HCCI technology, Mazda figures to be able to compete with larger automakers in terms of fuel economy and emissions without resorting to hybrid powertrains, continuously variable transmissions or automatics relying on more forward gears (eight or more) for optimal efficiency. Some of the challenges of HCCI, according to AN, include the need for better engine cooling, risk of misfire at high and low rpm and uneven engine performance based on fuel properties.

Mazda 16X rotary engine two years away, will arrive in all-new model

We last reported on Mazda's next-generation rotary engine project in June of 2012 when the automaker built its last Renesis-powered RX-8, but rumors of this new engine's development had been around way before that final car left the production line in Japan, last year.
We now have enthusiastic confirmation that this next-gen rotary engine is really and truly going forward. It is still referred to as 16X and has several priorities. First is to lower fuel consumption compared to the RX-8's engine, while still making gains in terms of performance. The second is to reduce the burning of oil that was happening at the highest revs. And the third and final priority, and perhaps most key for enthusiasts, is to give the powertrain a big torque upgrade.
What we were told by a Mazda USA insider (while we are all here together at the festivities in Monterey) is that the first application of the new 16X engine will be happening in two years' time in an as yet undisclosed new model. Oh, the mind races to our eternal Mazda wish list...

Mazda will have a new rotary concept at Tokyo show, trying to bring it to production

Despite ending production of the rotary engine in 2012, Mazda has repeatedly insisted that it's still working on rotary engine tech, and it has continued to tease a potential future rotary car with concepts, the latest of which was the RX-Vision. The company even continues to file patents on rotary tech. It seems the company is continuing this pattern, since the vice president for Mazda's European R&D center told Auto Express that it has another rotary concept ready for this October's Tokyo Motor Show. According to Auto Express, the car expands on the groundwork laid by the RX-Vision concept. In addition to revealing the existence of the concept, the executive also reiterated the fact that there's still a team in Mazda working on the rotary engine, and people are still trying to make a business case for a new rotary sports car. Auto Express expects a production car could come in 2020. The news outlet also asked if the hypothetical car would be hybridized, and the Mazda executive didn't give much of an answer beyond it being possible, though he would prefer a purely rotary-powered car. We at Autoblog think a hybrid rotary of some sort would make the most sense. It would make for an impressive halo vehicle that could be used to promote future Mazda hybrids. This would also help with the business case side of things. An electric motor, or motors, would be highly complementary to the rotary engine as well. Electric motors produce oodles of torque from down low, which rotaries don't, and the rotary engine's high-rpm horsepower would compensate for the electric motors when they've started running out of power. Not only that, but using a hybrid powertrain could help a thirsty rotary engine meet fuel economy and emissions requirements while still producing plenty of power. A hybrid system is also more possible now that Mazda is teamed up with hybrid expert Toyota. Related Video: