2011 Mazda Mazda3 I Touring on 2040-cars

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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.

2014 North American Car and Truck/Utility of the Year finalists announced [w/poll]

The 2014 North American International Auto Show is right around the corner, which means it's high time we found out which cars and trucks would be finalists for the prestigious North American Car and Truck/Utility of the Year awards.
The finalists - three in cars and three in three trucks/utilities - are dominated by American brands, with two-thirds of the finalists hailing from either General Motors or Chrysler (don't worry Ford, there's always next year), while outliers from Mazda and Acura can be found in each contest. Here now is the list of finalists for the big prizes:
2014 North American Car of the Year:

2014 Mazda6 gets up to 38 mpg, priced from $20,880*

The 2014 Mazda6 starts at $20,880 - *excluding a $795 destination fee - and will offer buyers up to 37 mpg highway in base form. That money will fetch buyers a 2.5-liter four-cylinder paired to a six-speed manual - a setup packing 184 horsepower and 185 pound-feet of torque. The Skyactiv powertrain is good, Mazda says, for 25 miles per gallon in the city and 37 mpg on the highway. Stepping up to the six-speed automatic gearbox will yield an additional 1 mpg in city and highway driving for up to 38 mpg highway. Despite offering more equipment, the base 2014 model carries a modest $155 price increase over its 2013 predecessor.
Available trims include i Sport starting at $22,495 and i Touring at $24,495 (*both excluding destination charges). The latter swaps the standard car's 17-inch wheels for 19-inch rollers and includes dual-zone automatic climate control and leatherette sport seats among other niceties. Buyers can snap up a tech package that includes TomTom navigation and an 11-speaker Bose Centerpoint sound system for $2,000. Keyless entry, rain-sensing wipers and the company's Smart City Brake Support are all part of that kit as well. Check out the full press release below for more information, and look for more details on the diesel-powered 2014 Mazda6 as we get closer to that vehicle's launch.