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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.

Mazda builds 1 millionth MX-5

Mazda produced its 1 millionth MX-5 Miata on April 22. Known alternately as the Miata, the Mazda Roadster, or the Eunos Roadster, the MX-5 has long held the record as the best-selling open-top two-seat sports car. It topped half a million at the turn of the millennium, and hit 800,000 less than a decade ago. The MX-5 recently entered its fourth generation over 27 years, which only promises to drive that record number higher. While it's not one of the most prolific automobiles in history – Ford has made over 34 million F-Series pickups and Toyota produced over 40 million Corollas – the Miata stands as a rather notable exception among niche performance vehicles. Related Video: Mazda Produces One-Millionth Mazda MX-5 HIROSHIMA, Japan—Mazda Motor Corporation announced today that production of the Mazda MX-5 (Mazda Roadster in Japan) reached one million units on April 22, 2016. The milestone figure was achieved over 27 years, with mass-production of the MX-5 starting at Ujina Plant No. 1 in Hiroshima in April 1989. "From the first generation through to today's fourth-generation model, the reason we have been able to continue selling the MX-5 all these years is due to the strong support of fans around the world," said Masamichi Kogai, Representative Director, President and CEO. "Mazda was founded in Hiroshima 96 years ago, and as we move toward our centennial year we will continue offering customers the joy of driving with this model, which has become a symbol of our brand. Mazda aims to create a special bond with customers and become a 'one-and-only' brand they will choose again and again." As a way of expressing thanks to MX-5 fans and owners, the One-Millionth MX-5 will be displayed at fan events in Japan and around the world. The tour begins on May 3 at the Hiroshima Flower Festival where the car will participate in the Flower Parade. The MX-5 is a symbol of Mazda's car-making philosophy and tireless pursuit of driving pleasure. Since its debut in 1989, the model has consistently offered driving fun that can only be experienced in a lightweight sports car and won the admiration of people from various countries, cultures and age groups. The MX-5 is also critically acclaimed, with over 200 awards from around the globe to its name. The fourth-generation model released last year has won a string of awards, including 2015-2016 Car of the Year Japan, World Car of the Year and World Car Design of the Year 2016.

2015 Mazda3 shows its shape

Mazda's new Kodo design language is set to quickly spread across the automaker's entire lineup, judging by these spy shots of the next-generation Mazda3 that show some very familiar styling cues. No matter, we're impressed with what Mazda has done on the CX-5 crossover and Mazda6 sedan in terms of design, and we're happy to see the C-segment hatchback ditching the smile-for-a-mile Nagare design.
It's unclear what sort of architecture is found below the new Mazda3 - our spy shooters suggest that the car could simply be using a heavily massaged version of the Ford C1 platform found under the current car. Our best guess is that it's actually a reworked version of the platform used in the CX-5 crossover, however, chocked full of weight-saving Skyactiv technologies. After all, the CX-5 plays in the compact CUV segment, and those vehicles are commonly based on C-segment platforms. And besides, there's probably some economic savings at work with the new chassis - both in terms of fuel efficiency and economies of scale. Still, no one is totally certain what lies under all that black-and-white paper at the moment.
The new Mazda3 is targeted to arrive for the 2015 model year, meaning we could see a final production car debut as early as this year. We expect the hatch you see here to debut along with a traditional four-door sedan, and unless we hear otherwise, we don't doubt that a Mazdaspeed version will be far behind.