Auto blog

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.

2016 Mazda MX-5 Miata named World Car of the Year

Kicking off Day Two of the New York Auto Show, the World Car of the Year awards are finally being handed out. The overall winner is, as God himself intended, the Mazda MX-5 Miata. It beat the Audi A4 and the Mercedes-Benz GLC-Class. The unique thing about these awards are that they aren't limited to the US domestic market (that's why they're called the World Car of the Year awards). For example, nominees for the overall award included the Skoda Superb, Renault Kadjar, and Subaru Levorg. In the Performance category, the forbidden fruit was repped by the Honda Civic Type R. But both the Civic and the Mercedes-AMG C63 Coupe were beat out by a far more expensive competitor – the new Audi R8. The fourth-generation Toyota Prius and the second-generation Chevrolet Volt, were two of the big finalists for the World Green Car of the Year award. They both lost out, though, to the Mirai fuel-cell car. Yes, a hydrogen car beat out two of the world's premiere hybrids. The luxury race that was perhaps the hardest to predict. That's because each of the three finalists have received near universal acclaim. In the end, though, the BMW 7 Series beat out the Audi Q7 and Volvo XC90. Finally, we have the World Car Design of the Year, where the overall winner (MX-5) and the Mazda CX-3 faced off against the new Jaguar XE. While both the CX-3 and XE are handsome vehicles, the WCOTY committee realized the answer is always Miata, and awarded Mazda's iconic roadster another 2016 award. Related Video: AND NOW THERE IS ONE... MAZDA MX-5 - 2016 WORLD CAR OF THE YEAR NEW YORK – March 24, 2016 - For Immediate Release The Road to World Car journey ended today with the declaration of the MAZDA MX-5 as the 2016 World Car of the Year. The winner was announced during a press conference hosted by the New York International Auto Show, Bridgestone Corporation and Autoneum. 2016 marks the 10th anniversary of the partnership between World Car and the New York show, and the third consecutive year that the World Car Awards have retained their ranking as the number one automotive awards program in the world in terms of media reach. Mazda Motor Corporation is no stranger to the World Car Awards program – now in its 12th year. The Mazda2/Mazda Demio was the 2008 World Car of the Year. While the Mazda3 (2014), Mazda6 (2013) and Mazda MX-5 have all earned "Top Three in the World" status as voted by our 70 plus international automotive journalists that make up the jury.

More head-up displays are coming to a dashboard near you

With the exception of Apple products — $1,000 for a freakin' smartphone? — one great thing about tech is you typically get more for your money with each passing year. This is particularly true with automotive tech: Features like driver assists and surround-view cameras that were once exclusively available in luxury vehicles now come standard even on some economy cars. The same thing is slowly happening with head-up displays (HUD). For example, the 10-inch HUD in the 2018 Toyota Camry is one of the largest and best HUDs I've seen in any car. And a big improvement on the much smaller HUD in the latest Toyota Prius. Mazda is another mainstream brand that offers HUDs in several of its vehicles. But instead of embedding expensive components in the dash and using a special windshield, the HUDs in the Mazda3 and Mazda6 use a thin plastic lens that folds down when not in use. MINI has a similar solution, but this low-cost approach has limits in terms of size and position of the images compared to traditional HUDs that use the windshield as a screen. We're also starting to see similar lens-based aftermarket options that can be added to any car. Last year I tested a portable HUD called Navdy that taps into a car's OBD-II port to provide info on speed and RPM and uses built-in GPS and Google Maps to show the surrounding area, display speed limits and route you to your destination. Navdy also connects to an Android or iOS smartphone via Bluetooth to display data from phone calls, texts and music playing on a connected device, and it's simple to use and easily visible in almost any lighting condition. While Navdy is still available online, late last year the company ran into financial difficulties, and product support has been halted. I recently tested a new portable HUD called Hudly that's not quite fully baked and falls short of Navdy because it doesn't tap into an OBD-II port. Since a companion smartphone app for Hudly isn't scheduled to launch until next month, for now it only mirrors what's on a smartphone. So it can be used for nav and other apps, and its features are very limited. Between automakers adding HUDs in more reasonably priced cars and the aftermarket filling in the gaps for existing vehicle owners with add-ons, the technology is becoming more prevalent and affordable. And it's also getting better.