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Watch what happens inside a rotary engine

Since 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

2020 Mazda CX-9 gets more torque and second-row captain's chairs

The 2020 Mazda CX-9 is here, and it’s even more enticing than the 2019 model year SUV. ItÂ’s not a full redesign, but Mazda shook up the features list to make it more competitive with other three-row crossovers. Most notable (arguably) of all changes comes from a small increase in torque — the 2.5-liter turbocharged four-cylinder gets bumped from 310 pound-feet of torque to 320 pound-feet. Horsepower remains the same at 250 horses. Those figures are only applicable when using 93 octane fuel. They go down to 227 horsepower and 310 pound-feet of torque when on 87. Another new feature is an off-road traction assist button, replacing the traction control button. This new feature is meant to help when navigating rougher terrain. HereÂ’s how Mazda describes its function: “When the diagonal wheels lose traction, off-road traction assist will stop reducing the engine torque and increases the brake force on the wheels without traction. This transfers power to the wheels still on the ground to help allow the vehicle to regain traction and continue the drive.” WeÂ’ll be interested to see how this helps the CX-9 on a snowy Michigan winter day soon. The number of standard features on the base Sport trim is up, too. Now all CX-9s get heated front seats, a power driverÂ’s seat, rain-sensing windshield wipers, heated outside mirrors and auto high-beams. Additionally, Mazda made its full suite of i-Activsense safety features standard. This includes adaptive cruise control, lane-keep assist and other driver assistance niceties. Mazda is also adopting the new key fob design of the Mazda3 for the CX-9. Optional on the Touring and Grand Touring are second-row captainÂ’s chairs. Previously, Mazda only offered bench style seating for the CX-9, so this addition could be a huge turn-on for some folks in this segment. The chairs have armrests, and the lack of a center pull-down means Mazda had to redesign its cupholder layout in back. In CX-9s equipped with the chairs, the cup holders and USB ports are now integrated into the backside of the front center console. If you opt for the captainÂ’s chairs in the Grand Touring or Signature trims, the seats are heated.  Pricing does increase a fair amount for the 2020 CX-9. A base front-wheel drive Sport is now priced at $34,835 including destination, a $1,510 increase from last yearÂ’s base price. The top of the range only got $750 more expensive, though, as the Signature starts at $47,160.

Recharge Wrap-up: BYD sales surge, new Mazda MX-5, plug-in VW Passat

BYD has enjoyed a tremendous leap in sales since last year, according to Want China Times. Sales from January to April were ten times that of the same period last year, with much of the credit going to government subsidies for clean cars. BYD claims, though, that battery production is limiting the number of vehicles it sells, and that by increasing that production capacity, it will see even more success. BYD's Qin plug-in hybrid, introduced in December, has already sold 4,500 units with another 8,000 orders already placed. Read more here. Mazda will reveal the fourth generation of its MX-5 roadster in September. To celebrate the car's 25th anniversary, the all-new two-seat convertible will debut during simultaneous private events in Spain, Japan and the US on September 3 and 4. Furthermore, the new Miata will be the center of a more public event in Barcelona on September 6. For fans in the US, Mazda will hold a Miatas at Mazda Raceway event from September 5 to 7. The 2016 MX-5 promises to continue to offer a lightweight, balanced design for fun and efficiency. The new Volkswagen Passat will feature a plug-in hybrid version. Volkswagen confirmed the Passat PHEV for Europe at the model's unveiling at the Volkswagen Design Centre in Potsdam, Germany. The plug-in Passat uses a 154-horsepower TSI engine and an 80-kilowatt electric motor for a total output of 208 horsepower. With a full charge, it can travel up to 31 miles on electricity alone. All versions of the eighth-generation Passat use stop-start and regenerative braking. Read more at Green Car Congress. BBC warns that the costs of charging an electric vehicle in the UK could surpass those of fueling a gasoline engine. Not so fast, says The Green Car Website. While the BBC cites charging services like Charge Master introducing fees for rapid charging making it cost about as much per mile to drive as traditional internal combustion engines. The Green Car Website points out that most people usually charge at home for much less, that paying for rapid charging is still not that expensive and that the BBC article misses the point about EVs, anyway. See the BBC article here or click here to read the rebuttal. News Source: Want China Times, Mazda, Volkswagen, BBC News, The Green Car Website via Charged, Green Car Congress Green Mazda Volkswagen Green Automakers Electric PHEV recharge wrapup qin