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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.

Mazda's new Mexican plant capacity rises to 230,000

After the turmoil of last year, 2013 is getting off to a much better start for Mazda. The company has issued a release indicating that the forthcoming plant in Salamanca, Mexico has had its production capacity raised even though it isn't scheduled to go online until March 2014. The original plans called for a 140,000-unit capacity, 90,000 of that allotted for the Mazda2 and Mazda3, the remaining 50,000 for a small car Mazda would build for Toyota that would be based on the Mazda2. The new plans call for raising that by 90,000 units to a total of 230,000 units within two years, by the end of March 2016, and it looks like it will all go toward Mazda production to satisfy growing demand for Skyactiv vehciles. The Mexican plant's opening will be the return of Mazda manufacturing to North America, after Mazda6 production was moved back to Japan last year.
More good news for the company is that it projects 10 billion yen ($114 million) in net income for the financial year that will end in March. That would be a welcome turnaround from the 100-billion-yen loss in the previous financial year, part of a series of three annual losses in a four-year span.
You'll find the press release with the factory update below.

Mitsuoka Rock Star is a Miata in a Chevy Corvette Sting Ray disguise

Mitsuoka is a famous (infamous?) Japanese custom car builder known for its absurd, and occasionally out-of-this-world vehicles. Its most iconic vehicle was the mid-engine Orochi, but its bread and butter are normal Japanese cars given front and rear styling from the past, usually sometime between the 1930s and 1950s. One of the more recent examples is the Mitsuoka Himiko, a Mazda Miata given a classic European roadster look. But the company has ventured a little further ahead in history with its latest model, the Mitsuoka Rock Star, which quite clearly is meant to be a C2 Chevy Corvette Sting Ray. The effect is actually pretty convincing, and as far as Mitusokas go, it looks smartly proportioned and a good fit for the base car. That base car is the current Mazda Miata, known as Roadster in Japan. It probably helps that the base Miata was designed with exaggerated fenders and creases from the get-go, so the even more exaggerated lines of the Corvette fit surprisingly well. Outside of the body, the car is pretty much identical to a regular Miata. It uses the same naturally aspirated 1.5-liter four-cylinder as all overseas examples. That means it makes just 129 horsepower and 111 pound-feet of torque, so this doesn't even come close to the fire-breathing power of real C2 Corvettes. Of course, that could be rectified with an LS V8 swap from Flyin' Miata. The engine is coupled to either a six-speed manual transmission or an automatic. The manual can also be had with a limited-slip differential. There are a number of available upgrades including custom colors for the body and the windshield surround. You can also add a custom leather interior with body-color coordinated panels. Mitsuoka will even provide retro-style wheels with white-letter BF Goodrich tires for the complete look. If you live in Japan and find this vehicle appealing, you'd better be ready to shell out plenty of cash. At current exchange rates, the base Rock Star starts at $41,636. The price goes up from there with options. In contrast, a base Mazda Miata here in the U.S. starts at $26,625, a little more than half that of the Mitsuoka. And of course, the U.S.-spec Miata is substantially more powerful. If you want the Mitsuoka, you'll also have to get in touch with the company quickly. There will only be 50 examples, and you have to apply for one. Related Video: News Source: MitsuokaImage Credit: Mitsuoka Mazda Convertible Performance mitsuoka