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Patent application suggests Mazda rotary return

A recent patent application by Mazda reveals that the Japanese automaker is still working on the rotary engine. This could in fact be the Skyactiv-R engine found in the RX-Vision concept from the 2015 Tokyo Motor Show. As with anything Wankel-related, nothing is certain until Mazda makes a production commitment. But this filing suggests that serious development is happening in Hiroshima. The 2011 Mazda RX-8 was the last rotary-powered car you could buy in America. Slow sales, poor fuel economy, and tighter emissions standards prevented Mazda from committing to a follow-up. But the fundamental principles of the rotary - compact size and light weight - perfectly fit Mazda's Skyactiv ethos. (For an explanation of how rotaries work, click here.) In this new engine the intake port sits at the bottom of the engine with the exhaust port on top instead of the other way around. That allows for lower mounting, which improves a car's center of gravity. This rotary is also turbocharged. Putting the turbo up high helps ensure it doesn't get in the way of any body or chassis crossmembers. The implication of those claims is that somebody is thinking about how to put this engine in a car. There are other benefits as well. The short path from the exhaust port to the turbo ensures minimal turbo lag. It also allows for a close-mounted catalyst on top of the enigne, which will help emissions. Another innovation in this new engine is a triangle-shaped rotor that covers part of the exhaust port. This allows for different exhaust flow characteristics. The filing claims that that two of the four orientations allow for less airflow resistance in the exhaust port. As in previous Mazda rotaries, there are two spark plugs to manage ignition timing and combustion. But unlike in the 16X concept, Mazda's last public display of such an engine, the new rotary uses port fuel injection. Keep in mind this is only a patent application. A Mazda spokesperson refused to comment on future product, but commented "As we stated at the Tokyo motor show, Mazda is doing all that it can to bring a rotary to the market." In the meantime, keep your RX-7 prayer candles lit and hope for the return of the rotary before the end of the decade. You can bide your time by reading the entire application here. Related Video: Related Gallery Mazda RX-Vision Concept: Tokyo 2015 View 11 Photos News Source: USPTO via autoevolution Rumormill Mazda Performance rotary mazda rx7

Goodwood Festival of Speed celebrating Mazda this year [w/video]

Mazda gets to wear the crown and sash as the doubly honored marque for the Goodwood Festival of Speed this year. The Japanese brand will be the focus of the Central Feature, the sculpture that sits outside Goodwood House, and its race cars will be the focus on the lawn, where there will be at least one representative from "every era of Mazda's motor sport achievement." The theme for this year's event is "Flat-out and fearless: racing on the edge." The showcase, of course, will be the 700-horsepower, rotary-engined 787B that won the 24 Hours of Le Mans in 1991. It will run up the 1.6-mile Hillclimb while a Mazda challenger from the World Rally Championship runs the Forest Rally Stage, joining Andros Trophy ice racing and sportscar racing Mazdas. The festival happens from June 25-28 this year, and there's a press release with more details down below the video recap from 2014 and Mazda 787B Le Mans lap. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Le Mans-winning 787B to headline fantastic Mazda line-up at FoS 2015 Feb 18, 2015 -- Mazda is the only Japanese manufacturer to have won the world's most prestigious motor race – the Le Mans 24 Hours – and the victorious rotary-engined 787B, with its distinctive sound, is certain to be a crowd favourite as it winds its way up Goodwood's iconic 1.16-mile Hillclimb at the Festival of Speed this year. The 787B is part of a fabulous collection of racing and road machines that will be brought to the Festival by Mazda, in the year in which the company is also being honoured by the iconic Central Feature outside Goodwood House. Further motor sport success has been achieved in touring cars, the World Rally Championship, Andros Trophy ice racing and sportscar competition in the USA – in which Mazda's pioneering SKYACTIV-D turbodiesel technology is breaking new ground currently. In fact, every era of Mazda's motor sport achievement will be marked by some incredible competition cars both on the Hillclimb and the Forest Rally Stage as we celebrate the FoS theme 'Flat-out and fearless; racing on the edge'. The Moving Motor Show on June 25, will also showcase many of the key models from Mazda's current range.

Mazda6 diesel is coming, too, Mazda promises (again)

As we noted our piece earlier today about the CX-5 diesel, we've been waiting for Mazda to bring its Skyactiv-D engines to market for years. Tripped up by an emissions certification nightmare that caused delays and resulted in lackluster power and fuel economy numbers, they're late to the party. In the CX-5 diesel, it's also a questionable proposition at almost $4,000 more than the much more powerful CX-5 Turbo. But today, Mazda's U.S. president confirmed to Autoblog that the diesel engine would make its way into the 6. Like the CX-5, it'll only be offered with all-wheel drive and only on the top Signature trim level. Unlike the CX-5 diesel, which goes on sale in July, we don't know when the Skyactiv-D-powered 6 will go on sale. But it seems like later this year is a good bet. How much longer can Mazda wait, really, once the CX-5 diesel is on sale? The diesel Mazda6 will use the same 2.2-liter engine as the CX-5. It'll probably offer the same power figures – 168 horsepower at 4,000 rpm and 290 pound-feet of torque from a low 2,000 rpm, with a 5,500-rpm redline. The fuel economy bonus for choosing a diesel over the turbocharged gas engine should roughly parallel the difference in the CX-5: about 5 mpg in the city and 3 mph on the highway. That said, we don't know the 6's EPA fuel economy numbers yet. We expect the price premium to roughly parallel the CX-5 as well, so the diesel will likely be several thousand dollars more than the gas turbo engine in the same Signature trim. These are educated guesses, of course, and when we have firmer numbers or solid estimates from Mazda we'll let you know.