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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.

AWD Mazda6 or Mazda3? That could be a thing, but there's a problem

We wanted a stronger engine in the Mazda6, and last week at the L.A. Auto Show we got one, Mazda's turbocharged 2.5-liter four. (Though some of us wanted a manual transmission with it, but didn't get that.) And now we learn that apparently a lot of us would like to have all-wheel drive in Mazda's sedans. That might be a tough ask, but Mazda says it hears us. In an interview with CarAdvice, Masahiro Moro, Mazda North America's president and CEO, said there's a big demand in the U.S. for AWD, so Mazda's looking into it. Ah, but maybe we can't have everything. "I think we are not able to combine four-wheel drive and the 2.5-liter turbo. We have a layout issue with the sedans, that's why a four-wheel drive isn't deployed on the Mazda 3 and 6 so far," Moro said. "But there is a huge demand, at least what I know is that in the East Coast of the USA, 80 or 90 percent of premium sedans are sold with all-wheel drive." And with Mazda going upscale, it only makes sense to give upscale, performance-oriented customers what they want, like the AWD sedans the German premium brands have been offering for years. "Four-wheel drive becomes a premium cue for U.S. consumers," said Moro, "and obviously I have asked our R&D department to think about how we can accommodate four-wheel drive capability in the future." Though the CX-9, being a crossover, of course has AWD in combination with that turbo engine, it simply must not have the platform limitations of the sedans. And all-wheel drive in the Mazda6, at least, has been available in Japan, Europe and Australia, but paired with the Skyactiv-D and another smaller engine, diesels we don't get here. Moro's statement leaves open the possibility of AWD with the base 2.5-liter engine, but maybe not. Besides, a premium buyer would want the turbo. So, when Moro says the future, he means not now, not in the Mazda6 facelift we just saw. But maybe in the next big redesign? Or maybe the configuration problems will be easier to overcome when working with the innovative new 2.0-liter Skyactiv-X compression-ignition engine that's expected in the 2019 Mazda3. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Featured Gallery 2018 Mazda6: LA 2017 View 16 Photos Image Credit: Drew Phillips / Autoblog Auto News Mazda Technology Emerging Technologies Performance Sedan

Mazda sells 10 millionth car in the US, does something special

When Lauren Carter of Glen Ellyn, IL was in the market for her first car, she went for a Mazda3. Not a bad choice, but not necessarily remarkable on the surface. After all, Mazda sold 123,361 of them here last year alone. What she didn't know was that the car she bought was the 10 millionth Mazda had sold in the US over the course of its 43-year history here, since selling its first rotary-powered R100 here in 1970.
Rather than let the occasion pass with nothing more than a press release (like the one below), Mazda gave Lauren a brand-new 2014 Mazda3 to replace the 2013 model she had bought. Which is a nice gesture, of course, but also enables Mazda to hold on to the landmark 10,000,000th car in its heritage collection.