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2015 Nissan Juke keeps its funky

The Nissan Juke is one of the most polarizing vehicles on the road today, but that doesn't mean it hasn't been a sales success, especially in Europe. Nissan is giving the the CUV its first styling refresh at the Geneva Motor Show. While the design changes will almost certainly be universal, the mechanical changes are still somewhat of a mystery for the US market. Nissan makes it clear in its press release below that it covers only the European model, and details about the North American model are coming later.
The exterior changes put a focus on making the Juke look a bit more angular and sporty. The lights on the fenders are now formed into a jagged point and somewhat echo the boomerang-shaped taillights. It also features Nissan's new, thicker V-shaped chrome grille. The door mirrors receive LED turn signals, and the lower portion of the rear receives a simulated mesh grille to look more aggressive. Other than some new color schemes, the interior is basically unchanged. However, the luggage area has been reshaped to increase storage capacity by 40 percent to 12.5 cubic feet (354 liters).
European buyers are getting a new 1.2-liter DIG-T turbocharged engine with 113 horsepower (115PS) and 140 pound-feet of torque (190Nm), and the 1.6 DIG-T also gets an increased compression ratio to produce 188 hp and is offered with either a six-speed manual or Nissan's Xtronic CVT. The all-wheel-drive system has also been upgraded with a torque vectoring system.

Recharge Wrap-up: Eigg's renewable energy grid, Wulin City Car EV looks like i3

Scotland's Isle of Eigg's electrical grid relies solely on wind, hydro and solar power. It's the first grid of its kind after switching to renewable energy from noisy, unreliable diesel generators. Scotland's renewable resources are fodder for supporters of independence form the UK, and Eigg is a perfect example of that potential. Besides being a responsible community, it also seems like a lovely place to visit. Read more at Reuters. London Mayor Boris Johnson is calling for incentives for diesel vehicle scrapping. The goal is to improve London's air quality, encourage the purchase of clean vehicles and offset the inconvenience of charging diesel cars to enter the city's proposed Ultra Low Emissions Zone. Read more at Green Car Congress or in the press release below. BMW, Nissan, Renault and Volkswagen are teaming up to create a better EV charging infrastructure in the UK and Ireland. As part of the Trans-European Transport Network (T-ENT) program, the group aims to create extended EV-friendly roadways with the UK Rapid Charge Network, connecting major cities on the islands. Plans for the network include 70 rapid chargers along 684 miles of road. The four manufacturers also want to extend the project to mainland Europe to encourage the adoption of EVs. Read more at Hybrid Cars. Wuling is working on an EV, called City Car, which liberally takes visual cues from the BMW i3. The City Car EV concept is slated to make its debut in November at the Guangzhou Auto Show, while a production version could make its way onto Chinese roads next year. We might have to wait until the debut to know what powers the City Car, as those details haven't been released yet. General Motors is a 43-percent stakeholder in Wuling. Read and see more at Car News China. Taxi customers in New York will enjoy greater payment flexibility with the new interoperability between RideLinQ and Way2ride apps. Now customers will be able to use either app to pay in any of the city's 20,000 green and yellow taxis. There's no need for separate apps for separate cabs, and no need for drivers to install any new equipment. The groups behind the apps hope to expand this functionality to other cities across the country. Read more in the press release below.

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.