1985 Rx7-gs, Original Owner, 5-speed on 2040-cars

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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.

Mazda poaches designer Kevin Rice back from BMW

Kevin Rice left Mazda a baker's dozen years ago, but now he's back.
A graduate of the Transportation Design program at Coventry University (just across town from Jaguar headquarters), Rice worked his way up in the industry working for the likes of Opel and Italdesign Giugiaro before landing a job at Mazda. Between 1995 and 2000, he collaborated on such projects as the RX-8 and the 1999 Neospace concept that previewed the Mazda2 before moving on to BMW, where the new 3 Series and 4 Series were among the last projects he worked on during his 13-year tenure in Munich.
Now back at Mazda, Rice has been named the Japanese automaker's new creative director, charged with further honing the brand's KODO design language from its European headquarters in Oberursel, Germany. We're looking forward to seeing what he and his design team come up with in the coming years.

Next Mazda CX-9 spied for first time

After plenty of rumors, we finally have our first look at the second-generation Mazda CX-9. Development of the crossover look to be very far along based on these of production bodies hidden under form-fitting camouflage. The overall aesthetic, based on what we can see here, is very much in keeping with Mazda's handsome Kodo design language. The CX-9 you see here looks pretty much like a Mazda3 scaled up about 279.3 percent, with a five-pointed grille and expressive headlights prefacing a sculpted, swooshy body. In back, there's an aggressively raked rear window that won't do any favors for cargo capacity, but makes for a handsome silhouette. And if previous Mazdas are any indication, we'd expect the CX-9 to feature a very handsome, high-quality cabin, although it's impossible to see in these images. According to our spy photographers, the new CX-9 will abide by Mazda's Skyactiv philosophy, which should make for both an entertaining an efficient three-row crossover. A 2.5-liter, turbocharged four-cylinder will be the engine of choice, replacing the antiquated V6 of the current model, and will be available with an all-wheel-drive system. While this engine is slated for the CX-9, enthusiasts should take note that this first Skyactiv turbo will likely form the basis of future Mazdaspeed efforts. As previously reported, the CX-9 will make its debut this November at the 2015 Los Angeles Auto Show as a 2017 model. Should any info pop up before then, expect to see it here.