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Watch what happens inside a rotary engine
Thu, Mar 15 2018Since it looks like Mazda may very well revive the Wankel rotary engine as a range extender for electric cars, there's no better time to become reacquainted with the quirky internal-combustion engine. And there's hardly a better way to become reacquainted than by peering into a running rotary engine, which you can do with the video above. The video comes to us from the YouTube channel Warped Perception. The channel has already shown what happens inside a conventional internal-combustion piston engine by putting a clear cylinder head on top of a flathead engine. This new video shows off the rotary engine by adding a clear side to a tiny model-airplane engine, something that we weren't aware existed and are glad to know about now. Despite the tiny size, the engine is functionally almost exactly like the bigger versions you'll find in Mazdas from about 1967 to 2012. It has intake and exhaust ports on the edges of the rotor housing, and the triangular rotor swings about in a peanut-shaped housing. For maximum effect, jump to right around the 7:40 timestamp. This is the point at which a bit of acetylene is added to the air-fuel mix for a brighter flame. It's at this point that you can really see when the mixture combusts and how the pressure of the flame pushes the rotor to produce rotational motion. Each stage of the video does slow things down to make everything as clear as possible. Even if you already knew how rotary engines worked, it's still fascinating to watch, first because it's something you don't get to see usually, and also because of the engine's elegant simplicity. Related Video: Image Credit: YouTube / Warped Perception Weird Car News Mazda Technology Videos rotary rotary engine
Mazda files patent applications for inline-six technology, new transmission
Tue, Feb 4 2020We've known for some time that Mazda is one of the OEMs getting back on the inline-six engine bandwagon, and a report from Japan gives us a glimpse of some of the automaker's plans. Mazda has filed patent applications for both new exhaust components (depicted with an inline-six) and a new eight-speed automatic transmission. The news comes from a blog called T's Media (fire up Google Translate), which located the new hardware in two separate fillings, one for exhaust system components and one for the new transmission. Mazda's lineup has been exclusively powered by four-cylinder engines since the demise of the last-generation CX-9, which utilized a 3.7-liter V6 sourced from Ford. Since, Mazda has relied on turbocharging to get more power out of its SkyActiv four-pots, but changes may be coming. Prior reports have indicated that Mazda wants a new, larger engine architecture to power vehicles built on a new, larger platform. This new chassis is expected to accommodate longitudinal, rear-wheel drive powertrains, which could spawn larger crossovers and SUVs. It could also potentially underpin a new rear-wheel drive coupe, if Mazda decides to go that route. While the inline engine itself is not news, what we're seeing here might actually be hints as to Mazda's approach to the next generation of its SkyActiv engine architecture. Mazda's exhaust patent seems to describe a scalable — perhaps even modular — setup intended to be used with inline and potentially even V-engines. "Provided is an engine exhaust structure capable of securing exhaust efficiency while reducing the size of the engine by changing the structure of an exhaust port," a translation of the patent application's introduction says. "[T]here has been proposed a technique for collecting exhaust gas discharged from each cylinder inside a cylinder head without using a separate exhaust manifold with the aim of downsizing the engine." In other words, Mazda is looking for ways to make its future engines more compact, and the strategy detailed here is the use of an integrated exhaust manifold, similar to what other automakers (such as Honda and Ford) have utilized on their smaller-displacement turbocharged engines. The sketch above of an inline-six engine with just two exhaust ports illustrates this concept. The eight-speed transmission, while noteworthy in its own right as Mazda currently relies on aging six-speeds, doesn't seem to offer us anything particularly game-changing. Related Video:
2021 Mazda CX-9 gets new tech, Carbon Edition
Tue, Aug 18 2020Mazda announced early Tuesday that the 2021 CX-9 is getting a nip-and-tuck styling update along with some updated tech, including a new 10.25-inch infotainment system powered by the latest version of Mazda Connect. Mazda may have oversold things a bit by saying the 2021 CX-9 styling is new in the strictest sense. We only have this photo and Mazda's press release to go on, but from what we can tell, the changes are effectively relegated to trim elements available with certain option packages or trim levels, and mostly at the higher end. The fundamental shapes of the 2021 CX-9's body panels remain identical to 2020's, while changes include a new grille and wheel design on the Signature model. The biggest changes come care of the Carbon Edition, which gets "Polymetal Gray" exterior paint, gloss black door mirrors, a unique gloss black front grille and 20-inch black metallic aluminum alloy wheels. Inside, it adds red leather seats and black interior trim on the dash, door panels and handle bezels. In addition to the larger screen and updated infotainment interface, Mazda says the 2021 CX-9 will now offer wireless device charging, with a new pad incorporated into the cubby area forward of the gear selector. The most exciting Mazda news for the coming model year might be the introduction of the turbocharged Mazda3, but here in Crossoverland, improvements to the CX-9 are both welcome and necessary. Mazda's stylish three-row is attractive and great to drive, but compromised in terms of practicality for those very reasons. Look for the '21 CX-9 to hit showrooms later this year. Related Video:  Â
