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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.

Oliver Jarvis in a Mazda takes pole in star-studded Rolex 24 at Daytona

DAYTONA BEACH, Fla. — Oliver Jarvis broke a 26-year-old record at Daytona International Speedway in putting the Mazda DPi from Team Joest on the pole for the Rolex 24 at Daytona. Jarvis went to the top of the scoring chart early in Thursday's qualifying session with a lap at 1 minute, 33.685 seconds. It broke the mark by two-tenths of a second set by P.J. Jones in 1993 in a GTP-class Toyota. The Englishman spoiled a strong run by Team Penske, which qualified second and third for the twice-round-the-clock endurance race that begins Saturday. Ricky Taylor earned the second spot in Penske's Acura ARX-05, while teammate Juan Pablo Montoya was third in his first time qualifying the sports car for the organization. Team Joest wound up first and fourth on the starting grid with Jonathan Bomarito putting its second car on the second row. Felipe Nasr had the fastest Cadillac DPi-V.R in fifth for Action Express Racing. Nasr is the reigning IMSA champion and led the way for four more Cadillacs in qualifying. Jordan Taylor was sixth for Wayne Taylor Racing, ahead of Juncos Racing's Agustin Canapino, then Tristan Vautier and Stephen Simpson for JDC-Miller Motorsports. James Allen in an Oreca 07 Gibson for DragonSpeed won the LMP2 pole. In the GT Le Mans class, Nick Tandy put a Porsche on the pole as four different manufacturers qualified in the first two rows. IMSA GTLM champion Jan Magnussen of Corvette Racing was second, Ryan Briscoe in a Ford GT for Chip Ganassi Racing was third and followed by Davide Rigon in Risi Competizione's Ferrari 488. Marcos Gomes gave Via Italia's Ferrari 488 the pole in the GT Daytona class. Related Video:

Masamichi Kogai new Mazda president and CEO

There's some executive rearranging going on in the top suite at Mazda Motor Corporation in Japan, with current CEO Takashi Yamanouchi telling reporters there "I'd like to hand over the work to younger people" now that the company has returned to profitability. Yamanouchi became CEO on November 19, 2008 of an independent Mazda that had to fight for its future in the immediate aftermath of the global financial crisis. What followed was four years of losses before finally getting back to black last year.
Masamichi Kogai (pictured) will be appointed the new president and CEO on June 25, pending approval at the company's annual general shareholders' meeting. Kogai assisted Seita Kanai with the production-efficiency initiative that Mazda called Mono Tsukuri Innovation, which worked to give export-dependent Mazda the best chance at profitability in spite of a rising yen. Kogai, lately in charge of production and purchasing, has been with the company since 1977 and worked in areas from R&D to logistics.
Kanai, who headed the Mono Tsukuri effort and was among the leadership on Skyactiv, will be promoted from executive vice president to vice chairman. Akira Marumoto will become executive VP of Mazda and assistant to new president Kogai. Yamanouchi will remain Chairman of the Board. There's a short press release below to make it official.