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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.

Cedar Rocket is the fastest all-electric log car in the world

An electric turbine manufacturer, a mechanic, and a log house builder walk into a bar. No, wait. The three are standing around at Barrett-Jackson a few years ago, talking about the world. What's the eventual punchline? An all-electric vehicle mash-up of a Mazda RX-8 and a giant piece of wood. One that was just awarded a Guinness World Record for "fastest motorized log." "Truly, what else would you think of?" - Bryan Reid, Sr. Bryan Reid, Sr., star of the reality show Timber Kings, is the log house builder in the set-up above, and he's now the proud owner of Cedar Rocket. He told AutoblogGreen that a log-based EV is the natural result of the three guys chatting. "Truly, what else would you think of?" he said. "I mean, really? There has to be something to come out of it other than girls. It was crazy, but it's a good story and nobody gets hurt. It's hard to make the news when everything's positive." Idea in hand, Reid and his friend set off to actually build the car. Gerald Overton, the mechanic, turned the Mazda into a welcoming recipient, working on the disc brakes, axles, frame, differential, and suspension. While the presence of a television producer kept things moving, Reid said that it still took almost two years. "It started out, not as a joke, but as something very light," he said. "You put a log on a couple of axles and 'ha ha.' It ended up taking many thousands of hours. We don't do anything halfway." In the end, Reid and the team took the Cedar Rocket to the Wild Horse Pass Motorsports Park in Chandler, Arizona and managed two runs of 55 miles per hour within an hour (that's what Guinness required to hand out the official record). The Rocket is incredibly stable – heavy batteries help there – and Reid pointed out that because the EV uses electric turbines, it's not a quarter-mile car. "It's more like a salt-flat car," he said, because the "turbines that take a while to spin up." Given the right conditions, Reid said the team thinks the Cedar Rocket could go 120-130 mph. "It's crazy because it's different." But the point of this car isn't to just go fast. The builders will bring the car to Barrett-Jackson and auction it off next year, but before that it will make the rounds at places like SEMA and a number of unexpected events, like golf shows. The point is to get attention and raise money and awareness for veterans groups. "I believe it's for the best cause in North America," he said.

2019 Mazda 6 gets more expensive, adds equipment and drops the manual

Update: We got wind of what Mazda had in store for the 2019 Mazda 6 in this report from last week, and now we have all the official information from Mazda. The news on the manual transmission's disappearance is still true — 2018 model year cars will be the last ones that make that an option. There are a few changes Mazda has implemented for this model year, and a slight price adjustment that goes with. The addition of Mazda's i-Activsense safety tech as standard is confirmed. As is G-Vectoring Control Plus, the next generation of Mazda's G-Vectoring we saw hit the CX-5 for the 2019 model year. Pricing has been adjusted to reflect the extra standard equipment and elimination of the manual transmission. A base (manual) 2018 Mazda 6 Sport costs $22,845 with its $895 destination fee, but the new 2019 model begins at $24,720 with the $920 destination fee included. That's a considerable increase, but the charge for an automatic transmission was $1,050 of that previously. Higher trim levels don't experience as much of a hike. For example, the maxed-out Signature is only $375 more expensive in 2019, coming in at $36,020 total. Mazda says the 2019 Mazda 6 goes on sale this month. It's a little surprising that 2019 model year Mazda 6s weren't already on sale, but mid-year updates or late introductions aren't exactly out of the norm for Mazda. Since its introduction, the current generation Mazda6 has always remained a top choice among driving enthusiasts. That's because it's one of the few cars left in its class to still offer a manual transmission, next to the Honda Accord. But sadly, it seems even that's going to disappear for the 2019 model year update. CarsDirect originally heard through the grapevine that the Mazda6 sedan will be losing its standard six-speed manual while gaining some new safety tech. At first, we here at Autoblog were in denial. We had to reach out to Mazda to verify this unfortunate news. And sadly, it seems CarsDirect's findings are accurate, with Mazda USA's marketing and brand communications manager, Drew Cary, replying to our inquiry with the following statement: At Mazda we are always listening to our fans, especially when it comes to what they are looking for from our vehicles. As we have moved the Mazda6 upscale with the launch of the Grand Touring Reserve and Signature models, we have seen less demand for a manual transmission option.