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Mazda patents show rotary engine for range-extended EV

Two years ago, Mazda introduced a fascinating range-extended electric car called the Mazda2 RE Range-Extender. It took an electric Mazda2, and dropped in an itty-bitty 330cc rotary engine. It wasn't the rotary-powered sports car we had hoped for, but it seemed like a unique way to keep the quirky engine alive and kicking. But not long after the car's reveal, it seemed to disappear. Now the basic idea has resurfaced with a few modern updates in a couple of US patents. The first patent is pretty straightforward and describes a range-extended EV similar to the BMW i3. At the front is an electric motor driving the front wheels. At the back is an internal combustion engine that powers an electric generator. In the middle is a lithium-ion battery for storing and delivering electricity. It's the same set-up as that Mazda2. The second patent is for an engine start-and-stop system, but specifically for rotary engines. The system is designed to shut off a rotary engine when not needed, much as modern piston engines do. It also stops the rotor in a position that closes the intake port to ensure no fuel or exhaust emissions slip out through the intake tract. This is necessary since there are no valves in a rotary, and air and exhaust come through ports that are "opened" and "closed" by the rotor itself. The patent also describes the possibility of firing a spark plug after the fuel has been cut to eliminate any leftover fuel emissions. This system would theoretically improve a rotary engine's fuel economy and emissions significantly, which would be a boon as those are two of the rotary's major weaknesses. The rotary-engine patent also includes the same range-extended powertrain drawing as the first patent. It's there as a description of a possible application. And in such an application, where the rotary wouldn't have to run all the time, the system could take advantage of the rotary's inherent strengths. Weight can be kept low thanks to the engine's small dimensions, which should help in keeping the car sprightly and efficient. Rotaries are renowned for smoothness, too, so it shouldn't need too much refining and sound deadening, the latter of which adds more weight. The small size would also help with packaging, leaving more space for people, cargo, or possibly batteries. And since it has been patented, the company may be looking to bring the system to market.

Toyota, Mazda drop Takata as Mitsubishi, Subaru weigh options

It's not a very good time to be Takata right now. Fresh on the heels of longtime partner Honda ditching them, Toyota and Mazda have both come out and said they will not use the company's airbag inflators if they continue to rely on ammonium nitrate. Bloomberg reports that Subaru and Mitsubishi are also contemplating a divorce. "The inflator using ammonium nitrate produced by Takata will not be adopted by Toyota," President Akio Toyoda said during a briefing today. "What's most important above anything else is the safety and peace of mind of customers." Mazda echoed that position, simply saying it "will not use Takata airbag inflators which contain ammonium nitrate in our new cars." When you lose three huge OEM accounts in as many days, it's certainly going to have a deleterious effect on your fortunes. In Takata's case, that's meant a staggering 39-percent drop in their share price over the last three days. Yesterday alone, the company saw a 6.2-percent fall, Bloomberg reports. As the business publication reports, though, Takata isn't going down without a fight. The company is "considering some plans to survive," including a fundraising plan that will see it potentially offer up additional shares for sale. Still, at least one analyst doesn't see whatever company survives staying involved in the airbag inflator business. "I really don't see how they're going to be able to survive as an inflator manufacturer," Valient Market Research founder Scott Upham told Bloomberg. "When your major clients publicly come out and say that they're not going to use your products anymore, it makes this very difficult to sustain your business." News Source: Automotive News - sub. req.Image Credit: Carlos Osorio / AP Honda Mazda Mitsubishi Subaru Toyota Safety supplier

A pair of Mitsubishis, the Mazda CX-30 and electric incentives | Autoblog Podcast #673

This week's Autoblog Podcast features Editor-in-Chief Greg Migliore and Consumer Editor Jeremy Korzeniewski as they debate the merits of the redesigned Subaru BRZ and Toyota 86 coupes and whether or not they are distinctive and powerful enough to attract buyers. The duo spends some time discussing ongoing EV and infrastructure legislation before turning their attention to a trio of crossovers. Greg muses about the 2021 Mazda CX-30 before Jeremy talks about the refreshed 2022 Mitsubishi Eclipse Cross and completely redesigned Outlander. We get nostalgic as we remember the dearly departed Pontiac GTO before wrapping the podcast up by making one more suggestion to a longtime listener who is shopping for a vehicle to replace her aging Honda Pilot. Autoblog Podcast #673 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars We're Driving 2021 Mazda CX-30 2022 Mitsubishi Eclipse Cross 2022 Mitsubishi Outlander News 2022 Subaru BRZ revealed with 228 horsepower New Toyota GR 86 breaks cover as the Subaru BRZ's friendly rival Toyota 86, Subaru BRZ stay the course ... thatÂ’s OK. Biden aims to juice EV sales with tax credits, rebates: Will it work? 2004-2006 Pontiac GTO | Used vehicle spotlight Spend My Money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.