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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.

Hiss off! Venomous snake takes refuge in Australian man’s engine bay

A man who went out for a walk in suburban Sydney got quite a surprise when he returned to his red Mazda. Left on his windshield was a hand-written note warning him that a venomous red-bellied black snake had taken up residence in his car. "Hi," the note read, "this afternoon a red Belly slithered up into your front left tyre. Please be careful." The snake is a native of wet areas of eastern Australia that can grow up to 2.5 meters (about 8 feet), making it one of Australia's largest venomous snakes. They're considered dangerous, but shy, unlikely to bite unless severely agitated. When Michael Garbutt popped the hood, he found the snake coiled up inside in the corner. "To say I was shocked is an understatement," he told The Sydney Morning Herald. "On reflection I don't think I would have put my hand out to pop the bonnet if I had known it was there." So he took to Google to look for a local snake wrangler and found Andrew Melrose, of Shire Snake Catchers. By the time he arrived, the snake had moved down into the engine. Then it moved behind the wheel guard, and then under the engine to the front bumper, then back to the right front wheel. Melrose said he coaxed it out by gently touching its body. "I've done it my whole life," he said. "It looks simple but if you haven't done it before you can get killed real quick." In the end, Melrose ended up grabbing the snake from the ground outside of the car and dropping it in a bag. The whole de-snaking process took about an hour. Melrose said the snake is common on the swampy peninsula area where it was found, since it finds plenty of frogs, eels and other creatures to eat. He says it's common to find them in cars. "If they get startled they look for the first place that is safe," he said. "The place I found it was very bare. There was no place for the snake to escape. People would have startled it and the only place for it to hide was the car. The driver could have driven off unaware and parked and the snake would have left the car when it felt safe." So let this be a lesson for you, Autoblog readers: familiarize yourself with your local venomous snakes. And keep the number of your local snake wrangler handy at all times. Or just don't move to Australia.Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Image Credit: Unknown Auto News Weird Car News Mazda snake

2016 Mazda MX-5 Miata First Drive [w/video]

Hypothetically speaking, if you blindfolded me, put me in the car pictured above, and told me to hit the road, it would have taken me maybe two minutes to figure out that I was driving the 2016 Mazda MX-5 Miata. There are just certain facets about Miata driving that have been baked into every generation of Mazda's roadster, and it makes for a symbiotic relationship between car and driver that's truly unique. Sure, I could rattle off a list of cars that come close to offering the same sort of experience, but they just can't quite capture the same intrinsic Miata magic. Mazda knows its Miata is an incredibly special machine. Listening to the company's engineers and designers talk about the development of this fourth-generation ND model is fascinating. The attention to detail is astonishing, and every single person involved in the Miata program knows that the most important goal is to keep this car as true to its predecessors' ethos as possible. It cannot just be a great convertible, or even a great Mazda – it has to be a great MX-5 Miata. But the company did not just want to improve upon the third-generation NC Miata, which has been around since 2006. They wanted to tie the ND Miata's roots back to the original NA from 1989. Back in '89, the Miata was a less-powerful, 1.6-liter model with 115 horsepower and 100 pound-feet of torque. Mazda's team said they are proud of every version of the MX-5, but it's this specific, first-generation model that the company calls the "most right" – the most true to the idea of what a Miata ought to be. So that's why, before being allowed to attack the winding roads of the Spanish countryside in the 2016 MX-5, Mazda wanted me to spend some time with a cherry example of the original NA Miata: a Mariner Blue darling that, even with some 239,000 kilometers on its clock, still felt absolutely impeccable from behind the wheel. Light, responsive, and perfectly balanced, it was the original embodiment of the harmony between driver and car that Mazda wanted in every Miata. Mazda executives said they felt the first Miata was also the right size. So they chopped off three inches on the ND compared with the NC, and put it on a wheelbase that's been reduced by six-tenths of an inch. In fact, these dimensions mean the new Miata is more than two inches shorter in length than the original, and only two-tenths of an inch taller. In this day and age of ever-expanding waistlines and footprints, it's a remarkable achievement.