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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.

2016 Mazda MX-5 Miata Launch Edition now available for pre-order

Want to be one of the first to buy the fantastic new 2016 Mazda MX-5 Miata? Now's your chance. The pre-order books open at 12:00 PM Eastern for the very special Launch Edition, which is limited to just 1,000 units. All of the MX-5 Miata Launch Edition cars come painted in Soul Red with a Sport Tan leather interior, an exclusive combination for this special run. Buyers only need to choose between the six-speed manual transmission (the obvious choice), or a six-speed automatic. Pricing is set at $30,495 if you want the stick-shift, and $31,570 if you prefer the auto. So, want one? Of course you do. Head over to Mazda's pre-order site and place a $500 deposit toward the purchase of your car. Better act fast, though. When Mazda offered its 25th Anniversary MX-5 Miata via pre-order, all 100 of those cars sold out in just ten minutes.

Translogic 182: CXC Motion Pro II Racing Simulator

Translogic gets some seat time in the CXC Motion Pro II to test if the high fidelity racing simulator can impact our host's real-life track times. Host Jonathon Buckley hits the track at Auto Club Speedway of California in a 2015 BMW M4 to put down a baseline lap time before his virtual training session in the Motion Pro II. After learning the lines of the track in a simulated setting, Jonathon returns to the track to put his skills to the test. "We designed it, originally, as a professional training tool for race car drivers," says CXC Simulation's founder and president Chris Considine. "Make it authentic. Make it real." The Motion Pro II boasts "thousands of cars and track models," ranging from street cars, to rally and off-road vehicles. Will this hyper realistic racing simulator help Jonathon improve his lap time? Have an RSS feed? Click here to add Translogic. Follow Translogic on Twitter and Facebook. Click here to learn more about our host, Jonathon Buckley. BMW Mazda Technology Coupe Racing Vehicles Translogic Videos Original Video