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How Mazda got Skyactiv-X to work is incredible

"Take everything you know about engines and turn it around," Mazda North America Vehicle Development Engineer Dave Coleman says, patiently and with a look of benevolent pity, as he's quizzed about the particulars of the company's new engine. The Skyactiv-X engine is enigmatic — and deceptively simple in operation. And the bottom line for American consumers is that they'll be able to buy a car (or crossover; we don't know yet what vehicle will first get it) by late 2019 that provides diesel-like fuel economy but runs on regular old gasoline. In between diesel and spark ignition, but it's neither To truly understand it, you have to dive into the contradictions. Take that regular old gasoline: Contrary to common sense, the lower the octane, the better it works. In the lab, the Skyactiv-X engine loves 80 octane. The lowest Americans get is 87, so the engine is tuned for that octane. Go higher and you lose some low-end torque. Coleman was right. It's hard to wrap your head around an engine that thrives just at the point when most gas engines would aggressively self-destruct. It uses a supercharger to pump additional air — but not additional fuel. It uses spark plugs to start a combustion cycle that normally doesn't need a spark. And, quixotically, it's not displacing Mazda's own American-market diesel engine, currently languishing in a seemingly endless hell of regulatory approval. More bizarre: Mazda is a tiny automaker facing real existential headwinds, and gasoline compression ignition is a massive challenge. GM and Hyundai announced compression ignition, or HCCI, projects (full name, homogeneous charge compression ignition) to great fanfare, but they never amounted to a production hill of beans, crippled by reliability issues or horrible vibrations. Worse, they only worked at an unusably narrow range — low RPMs and low loads. HCCI research improved direct-injection gas and diesel engine technologies for these companies, but HCCI itself remains untamed. The benefits of lean combustion Why even try to tame HCCI? The answer is much better fuel economy and lower emissions. Less burned carbon-based fuel, less carbon dioxide released. That's simple. But there are some thermodynamic reasons for the lean combustion you can achieve with compression ignition that are worth explaining. The ideal amount of fuel for a conventional engine to burn is about a 14:1 air-to-fuel ratio. That lets every molecule burn nicely, in theory.

2014 Mazda6 i-Eloop to net 40 mpg hwy, 28 mpg city

Even before Mazda unveiled the 2014 Mazda6, it had introduced its innovative, non-hybrid i-Eloop (Intelligent Energy Loop) brake regeneration system. This technology converts kinetic energy into usable electricity using the alternator, a DC/DC converter and a capacitor mounted just behind the front fascia. During deceleration, the alternator captures energy that is then stored in the capacitor, which can later be used to directly power electric devices like climate control and audio systems. When i-Eloop power is used, it reduces the load on the engine and helps to conserve fuel.
Now available on the Mazda6, i-Eloop is only available on the $29,695 Grand Touring trim level as a part of the $2,080 GT Technology Package, meaning that buyers desiring i-Eloop will have to spend at least $31,775 (not including destination). The added price of this technology should be worth it for those looking for optimal fuel economy as the i-Eloop, combined with the package's active grille shutters, will bump the sedan's fuel economy numbers up to 28 miles per gallon city and 40 mpg highway - both are improvements of 2 mpg over the standard Mazda6 Grand Touring. The GT Technology Package also includes a Sport mode, lane departure warning, high beam control, radar cruise control and forward obstruction warning - the latter two technologies are currently offered in a $900 package that is being discontinued.
i-Eloop will eventually be offered on other Mazda products including the 2014 Mazda3. Scroll down for the official press release on the Mazda6's fuel-saving i-Eloop technology.

2016 Mazda MX-5 Miata shows off perfect 50/50 weight balance

When I attended the first drive event for the Japanese-spec 2016 Mazda MX-5 Miata in Spain earlier this year, I was blown away – and not just by the car. I was blown away by the charts and graphs Mazda's engineers brought along, showing how every little facet of the ND Miata was finely tuned for pure driving perfection. It's like rocket science. Only cooler. One of the most important parts of the Miata package is its weight distribution. The 2,332-pound roadster must achieve a perfect 50/50 balance, with a driver inside. That's not easy. But it has to be done. Only the best for the Miata. In this video, Mazda shows off the Miata's balance by putting it on an aluminum balance beam, to see if the car stays perfectly centered. You can probably guess the outcome, but watching it all take place is super cool, especially with commentary by Mazda engineer Dave Coleman and MX-5 program manager Rod McLaughlin. How does the 50/50 balance help the Miata's handling out on the road? You'll have to wait until the embargo on driving impressions for the US-spec car lifts. We'll have the full scoop at 3:01 AM Eastern on Monday, June 1. In the meantime, get a sneak preview of the new Miata in the video below. Autoblog readers got a closer look at the 2016 MX-5 at our Cars & Coneys meet-up, and as you can see, the excitement for this car is definitely real.