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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 2019 Mazda MX-5 Miata 30th Anniversary editions are heading to America

The 2019 Mazda MX-5 Miata 30th Anniversary edition made its debut a few months back at this year's Chicago Auto Show. The special model was limited to just 3,000 units worldwide, with just 500 heading to the U.S. Miata enthusiasts were so excited by the car that the entire allotment sold out within four hours. To help satisfy demand for this limited edition model, Mazda is allocating another 143 cars for the American market, bringing the total number of cars heading to the U.S. to 643. Note, Mazda is still only building 3,000 cars total. The 30th Anniversary Miata is available as both a roadster and the retractable hardtop Miata RF. All of them will be painted Racing Orange and will be fitted with RAYS ZE40 17-inch forged alloy wheels, orange Brembo brake calipers and Recaro seats. The cars also come with a Bose audio system, Apple CarPlay and Android Auto. The cars still retain the 2019 Miata's updated 2.0-liter inline-four making 181 horsepower and 151 pound-feet of torque. Cars equipped with the manual transmission get a limited-slip differential, Bilstein shocks and a front shock tower brace. This special edition isn't cheap. The manual soft top starts at $35,915, and the manual RF starts at $38,515. Adding an automatic ups the price by $499 on the soft top and $400 on the RF. That's up from $27,080 for a base roadster and $32,945 for a base Miata RF.

Mazda's Hofu plant builds its ten-millionth car

Ten million is a lot no matter which way you cut it, and no matter what you're talking about: Ten million dollars, ten million miles, ten million people... certainly ten million cars. And that's the milestone that Mazda's Hofu plant in Yamaguchi prefecture of Japan has just achieved.
The Hofu facility has been in operation since 1982, and was supplemented with a second plant on the same site ten years later. Hofu reached a million units built in 1986 and five million in 2002. But with production now at 482,100 units per year, it took less than twelve years to double that previous milestone.
The magic ten-millionth car was a new Mazda6 (known locally as the Atenza), which is built at Hofu Plant No. 2, while Hofu Plant No. 1 gears up for the new Mazda3 (aka Axela). Scroll down below for a related press release.