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Mazda patent shows rotary placement in complex AWD hybrid layout

If we were playing alt-powertrain Bingo, a recent Mazda patent application filed in Japan would be one or two letters from victory. What's exciting about the patent, discovered by Japanese outlet T's Media via Motor Trend, is that while it makes a case for an internal combustion engine of any configuration, one of the drawings showing a rotary engine. The wild bit is that the whole powertrain comprises the ICE, a transaxle, two tiny in-wheel electric motors turning the front wheels, a third electric motor in the driveline, a capacitor, a lithium-ion battery, and three inverters. Motor Trend parsed the mechanics, and the way it reads, Doc Brown couldn't have done a better job. The rotary engine at the front turns the rear wheels, but not directly. Instead of a flywheel on back of the engine, the drawing shows a 25-kW electric motor and an inverter, then a driveshaft running to the transaxle. Along the axis of the transmission tunnel in a normal car, between the inverter and the transaxle, lies a 3.5-kWh battery running at 48 volts. MT writes that the electric motor can add its output to the ICE output to drive the rear wheels, or the e-motor can turn the rear axle on its own. Up front, two inverters and a double-layer capacitor join the ICE in the engine bay. The capacitor and tiny hub motors in the front wheels run at 120 volts, a higher voltage than the rest of the electrical system, so that the small in-wheel motors can generate the same torque as a larger motor running at a lower voltage. The AWD system acts on-demand. Given the signal, the capacitors discharge their energy to the wheel motors, and recover energy from braking. When the capacitors are at full charge, they send excess regen energy to the lithium-ion battery; conversely, the battery can recharge the capacitors when they're low and the front hub motors need power. The patent explains that the ICE works with the rear e-motor to drive the rear wheels at low speeds, the front motors called on to "generate an output only when a large output is required in the high vehicle speed range." The rather complicated system is focused on providing the benefits of a hybrid system and all-wheel drive, but at lower weight than one would expect. A rotary serves due to its compactness, but one of the drawings shows an engine with a V layout. Hub motors get dinged for adding unsprung weight, hence the small motors here.

More powerful 2019 Mazda MX-5 also more efficient

Bumping the 2019 Mazda MX-5 Miata's power from 155 horses to 181, plus little interior upgrades such as a telescoping steering wheel were more than enough to make the appealing roadster even more so. But there's yet another bonus in store for those that pick up the new Mazda: more efficiency. As initially spotted by industry watcher Bozi Tatarevic, the EPA released fuel economy numbers for the new model, and they're better than the 2018's. And between the automatic and manual versions, the manual sees the biggest increase. Now, these are, very, very minor increases in EPA fuel economy, but any increase is welcome when nothing is lost. The automatic continues to be the most efficient. While the city and highway ratings are unchanged at 26 and 35 mpg respectively, the combined rating increases by 1 mile per gallon to 30. The manual transmission model isn't far behind. City mileage stays the same at 26 mpg, as does the combined rating of 29 mpg. However, highway fuel economy picks up 1 mpg for a total of 34. So to recap, the 2019 Miata retains its good looks, and likely its playful handling and snickety shifter. But it also gets more power, better fuel economy, a better interior, and more options to customize than ever before. This is sounding like it could be the best Miata, yet. We can't wait to try it out. Related Video: Mazda Convertible Performance

Meet our new long-term 2016 Mazda MX-5 Miata Club!

We have a new Miata! For a year! And yeah, we're excited about it. This adorable roadster was added to our fleet over a month ago, but we've just now stopped driving it long enough to tell you about it. You can watch our unboxing video for this new long-termer above. (Spoiler alert: The car in the box is a Miata.) Then read a little more about which options and features we chose and why. What we got We chose the mid-line Club model because it's the only way to get the suspension with Bilstein shocks, the limited-slip differential, and a shock-tower brace. Club also includes an appearance package with a front air dam, side sill extensions, a rear bumper skirt, and a ip spoiler for the trunk. We chose Ceramic Metallic paint because it's white and silver and awesome all at once. The only option we chose is the Brembo/BBS Package. In addition to the upgraded brake system and 17-inch wheels alluded to by the title, this package adds Mazda's advanced keyless entry – you can unlock the doors and start the car without taking the key-thing out of your pocket. The MSRP for the car is $32,835. What we skipped The Grand Touring trim (too fancy), the automatic transmission (too few pedals), and extra-cost red paint (not ceramic enough). Grand Touring adds lots of convenience stuff like rain-sensing wipers and auto climate, some active safety systems, and leather. We wanted the upgraded chassis instead, and we' were trying to save some (hypothetical) money. Why we got it Because it's a Miata, and we like fun. The plan is to drive the bleep out of it for a year and report on the experience along the way. We'll take it to a track or two, keep the top down as far into winter as possible, and then slap some snow tires on it to continue . Maybe at a slight angle relative to straight-ahead at times. We'll see. If you have questions about this car, leave them in the comments below and we'll address as many as we can during the coming months. Miata! Related Video: