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Mazda files patents for a sequential twin-turbo setup

Mazda has a history of interesting engine technologies, from yesterday's rotary engine to tomorrow's compression ignition engine, and new patents show it still may have some internal combustion tricks up its sleeve. The one on display in these patents isn't especially new in concept, though. A sequential twin-turbocharger setup is something Mazda itself used on the third-generation RX-7. But it's something we haven't seen much of lately. It looks like it could have some possible advantages over older sequential systems, and it has some potential advantages for enthusiasts. First a quick and dirty primer for what makes a sequential twin-turbo system distinct from other twin-turbo systems. In many twin-turbo engines, there are simply two turbos that work together as one bigger turbo. They're the same size, and they spool up at the same time. With a sequential setup, at low rpm, a smaller turbocharger is spooled up first at low-rpm for quicker throttle response, and as the rpm and exhaust pressure increases, a valve opens up that allows a larger turbocharger to also spool up and provide high-rpm boost. That's basically how the Mazda design shown above functions. A big flap blocks off the larger turbocharger exhaust inlet, channeling all the exhaust to the smaller turbo. When more exhaust is available at high rpm, it looks like that flap opens up to spool up the big turbo, too. What's interesting here is that the way the turbochargers are packaged takes up less space than past systems. It looks like both turbos are contained in one unit that shares the same exhaust outlet, meaning the exhaust manifold could be kept simple and compact. In fact, the piping for compressed intake air could also be shared, reducing the amount of piping, which would further decrease the amount of materials and possible failure points. There are a number advantages of making this system smaller. The potential applications of the system are much greater, since it could fit in smaller cars with smaller engine bays. Making the system smaller also means that there won't be as much weight, which is important from both fuel economy and performance standpoints. Finally, the smaller setup likely uses fewer materials, which could make the system cheaper and thus easier to offer on a wider range of vehicles, or at least more profitable for Mazda.

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

Next Mazda MX-5 Miata to weigh a ton(ne), literally

Looking at recent spy shots of the fourth-generation Mazda Miata, it's obvious this sporty little roadster will grow in size compared to the current model, but it's also going on a diet. At the Tokyo Motor Show, Auto Motor und Sport sat down with Mazda executive Kiyoshi Fujiwara, who gave a little more insight into the Miata's redesign.
Fujiwara said that they're aiming for a curb weight of a tonne (metric ton), which is 1,000 kilograms or right around 2,200 pounds, for the next-generation Miata. This would make the roadster at least 300 pounds lighter than the current NC Miata, but still about 200 pounds heavier than the original NA.
There is no indication as to how Mazda will go about removing that much weight from the bigger car, but with as popular as the power retractable hard top (PHRT) model is on the current car, the new Miata may ditch this feature to lose its weight. Improving the power-to-weight ratio appears to be a key goal of the Mazda team, so we also wouldn't be surprised to see a more powerful engine underneath the longer hood.