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Infiniti's new VC-T changes the rules of small turbocharged engines

The upcoming Infiniti QX50 crossover does not get our pulse racing, no matter how shapely the QX Sport Inspiration concept that previews it may be. No midsize SUV does, to be fair. But it has something special under the hood – the world's first production variable-compression-ratio engine. That means the QX50's 2.0-liter turbo four, which makes 268 horsepower and 288 pound-feet of torque, will have up to 27 percent better fuel economy. Here's how it works. The trend of moving to smaller, turbocharged engines carries with it one big falsehood. Under low load when the turbo isn't needed, these engines are less efficient than an equivalent engine without a turbo because of the low compression ratio the turbo requires. That is, if you never need the extra power, you're wasting fuel. Turbocharged (and supercharged) engines use a lower compression ratio to prevent detonation. When you force extra air in a cylinder and mix it with fuel, it's more likely to prematurely go boom. Lowering the compression ratio prevents this problem, but it's less efficient. Infiniti's VC-T promises the best of both worlds, with a compression ratio that ranges from 8.0:1 for high-power turbo needs to a 14.0:1 ratio for fuel-sipping efficiency. At its heart the VC-T engine is a simple idea, but it's complicated to explain. Consider yourself warned. The photo below from Infiniti serves as a good visual overview. For the truly nerdy, this patent application covers the mechanical concept. Instead of having the pistons connected to the crankshaft, Infiniti's engine has a pivot arm with a connection on each end. One end connects to the piston, the other connects to a second lower shaft, which is controlled by an actuator arm. At any given time the engine's pistons move up and down according to the lobes on the crankshaft. But the actuator arm can change the angle of the pivot arm up and down. That is, the pistons still move in the same motion with the same stroke, but phase the entire stroke up or down. Move the pivot up and there's less room at the top, which means a higher compression ratio. Move the pivot down and the compression ratio goes down, too. As an added bonus, the lower shaft eliminates the need for counter-rotating balance shafts. Infiniti says this system works constantly and can vary the compression ratio to any number between 8:1 and 14:1. It also uses electronic variable valve timing on the intake valves to switch into Atkinson-cycle combustion for greater efficiency.

Ford and Lincoln design honcho leaves to head Nissan North America design

Last Friday, David Woodhouse suddenly resigned from his dual positions as Ford's director of global strategic design and director of Lincoln design. In a post not long after leaving, he praised the efforts of his former team over the past six years he headed design at Lincoln. Among other products, that crew gave us the redesigned Navigator, the Continental concept and production sedan, and the Aviator concept and production crossover. Car Design News reports Woodhouse traded Michigan for California, taking the role of VP at Nissan Design America in San Diego. He officially assumes the position July 1, and will also serve on the Japanese automaker's Global Nissan Design Management Committee. Woodhouse has spent more than 25 years in the design department, starting with BMW and work on the Mini and Range Rover brands, followed by a brief stint with Cadillac of Europe. For the past 20 years he's been with Ford, coming on board with the Ford's former luxury arm known as the Premier Automotive Group — Jaguar, Land Rover, Aston Martin, Volvo and Lincoln. He became Lincoln's design director in 2013, introducing the world to the design language labeled "quiet flight." He described the language's details as "anti-wedge body gestures, S-curves wherever possible, and an emphasis on horizontal lines at every opportunity to create leaner, longer, wider emphasis on the exteriors, and create equilibrium, balance, and calmness on the interiors." A much shorter way to describe it is: revitalized Lincolns. The U.S. luxury maker's new and overhauled products have been praised for their lines by critics and by paying customers. The brand's done so well it's hard to remember when the MKC concept was a revelation, and that goes on Woodhouse's resume, too. That's some special juju to take to Nissan, where Woodhouse will lead both Nissan and Infiniti design focused on the North American region. Nissan has a solid if uninspiring lineup that sells well here, while Infiniti, as the luxury brand, is the bigger issue. Infiniti sedans glide on the contrails of a design language more than 10 years old. The money-making crossovers and SUVs haven't made a splash in about the same time, since the long-ago FX45. Nissan's plan to update 70 percent of its lineup over the next few years and Infiniti's transition to an all-electric brand makes right now the perfect time to break into riveting designs for the street. Woodhouse replaces Taro Ueda, who moves into a global role with Nissan.

Renault-Nissan has sold more EVs than its next two competitors combined

Nissan may not be doing so hot with sales of its Leaf electric vehicle in the US this year, but the Japanese automaker and its France-based partner Renault still remain the gold standard of electric-vehicle sellers. Thanks to numbers crunched by the good people over at EV Sales, we learn that the Renault-Nissan Alliance has moved more than 265,000 electric vehicles around the world. That accounts for more than a quarter of all the EVs sold worldwide and is more than Mitsubishi's 11 percent share and General Motors' 10 percent share combined. Nissan and Renault surpassed the quarter-million electric-vehicle mark in June. There are shifts afoot, though. Renault-Nissan's global EV market share is only 18 percent this year, and the Alliance is losing share to companies like Volkswagen, BYD, and, to a lesser extent, BMW. That shift can be seen in this year's US sales numbers, where the Nissan Leaf has pretty much plunged down. In fact, with VW and BMW broadening their inventory of plug-in models, Germany can claim the third-place spot in the list of countries with the most "electric" automakers, after China and Japan. The US is trailing, even if many people associate electric cars with California's Tesla. On that note, both Ford and General Motors have lost electric-vehicle market share this year, while Mitsubishi has essentially tread water. GM's numbers (and Nissan's, for that matter) need some context because Americans have been holding off on purchasing a first-gen Chevrolet Volt extended-range plug-in while the automaker readies a new and improved version. All told, Japanese companies have produced the most plug-in vehicles, accounting for 39 percent of the world's market so far, while the US is responsible for about one in four electric vehicles ever made. Sales '15 % Total Sales % Renault-Nissan 44,003 18 265,205 27 VW (VAG) 28,480 12 42,743 4 BYD 25,592 11 51,338 5 Tesla 24,867 10 83,587 9 Mitsubishi 24.117 10 108,883 11 BMW 15,469 6 31,822 3 Ford 11,548 5 65,696 7 GM 11,617 4 100,818 10 Featured Gallery 2015 Nissan Leaf View 12 Photos News Source: EV Sales Green Nissan Renault Electric ev sales renault-nissan