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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.

Mountain goats provide full service car wash at national park

A group of plucky mountain goats in a Canadian national park apparently found the hardscrabble life of a common animal too tedious and tried their hands, rather tongues, at car detailing. YouTube user Darkrider1287 uploaded this video of the goats in action last week. His companion were driving along Maligne Valley Road in Alberta's Jasper National Park when a handful of young mountain goats descended on their Mazda. As the bewildered couple stopped their car, the goats surrounded them and proceeded to lick the vehicle clean. Knowing a good video opportunity when he saw one, Darkrider pulled out his phone to film the endearing and hilarious scene. For thirty minutes, the mountain goats licked the car clean from stem to stern. Paying little to no mind to the humans within, the goats cleared the Mazda of its accumulation of dust, bugs, pollen, and other tasty road grime. "So thorough!" said Darkrider as he narrated his video. "That's some tasty dust!" As the goats cleaned the car, other tourists stopped to laugh and take pictures of the strange scene. Eventually, a handful of cars and as many as ten goats had the Mazda surrounded. "Within a few minutes, we were crowded by both sheep and also tourists taking pictures of our funny plight," Darkrider stated in a comment on the video. "We stayed for about 30 minutes before moving on due to a rainstorm." So what exactly is going on here? A similar event happened to a National Geographic reporter in the same park in 2012. A park ranger told the report that the mountain goats were addicted to the salt used in Alberta to keep the roads from freezing. Even in August, salt can still make its way on to a car in the form of road dust. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. News Source: The Daily Mail, YouTube, National Geographic Auto News Humor Weird Car News Mazda Driving goat

Autoblog Minute: Highlights from the 2015 Tokyo Motor Show

The 44th Tokyo Motor Show is here with plenty of exciting new car reveals, like the stunning Mazda RX-Vision concept and the wild Nissan Concept 2020 Vision Gran Turismo. Autoblog's Chris McGraw reports on this edition of Autoblog Minute, with commentary from Autoblog's Managing editor, Steven Ewing. Show full video transcript text [00:00:00] The 44th Tokyo Motor Show is here with plenty of exciting new car reveals and lots of tech-heavy concept vehicles. I'm Chris McGraw and this is your Autoblog Minute. The Tokyo Motor Show opens to the public but for those unable to make it to Japan Autoblog is on hand to report. For more we go on location to Tokyo and Autoblog's Managing editor, Steven Ewing. [00:00:30] - [00:01:00] [Steven Ewing Interview] And that's your recap of the 44th Tokyo Motor Show, for our detailed coverage of the event be sure to head to Autoblo.com/tokyo-motor-show. For Autoblog, I'm Chris McGraw. [00:01:30] [Outro] Autoblog Minute is a short-form video news series reporting on all things automotive. Each segment offers a quick and clear picture of what's happening in the automotive industry from the perspective of Autoblog's expert editorial staff, auto executives, and industry professionals. Green Tokyo Motor Show Mazda Subaru Suzuki Coupe Concept Cars Autoblog Minute Videos Original Video Tokyo 2015