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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.

Economy-car buyers increasingly get the best deal on technology

One of the great things about technology is – with the exception of Apple products – consumers get more for their money every year. For example, the first 1GB USB drive I bought in 2005 cost me $30. Today you can get 10 for that price, delivered to your door thanks to Amazon. The same goes for car tech. Features such as navigation and Bluetooth started out on high-end vehicles before trickling down to entry-level cars. Same with driver assist features ranging from rearview cameras to forward collision warning with automatic emergency braking — so now it's not only rich people who are protected in car crashes. I've found that this democratization of tech has reached a point where amenities on low-cost cars can be as good — and sometimes even better — than those on vehicles costing tens of thousands of dollars more. While attending a media event for the launch of the all-new 2019 Toyota Corolla Hatchback, I was impressed by the car's cool styling and go-kart performance. Equally noteworthy is the amount of standard tech on the low-cost hot hatch. (Pricing will be announced later this month, but expect it to come in a bit higher that the current Corolla iM's roughly $19,000 base.) Even the base SE CVT trim of the 2019 Corolla Hatchback comes with an 8-inch touchscreen and Toyota's Entune 3.0 infotainment system. Among other features, Entune 3.0 provides Wi-Fi capability, Amazon Alexa connectivity, the Entune App Suite for integration of smartphone apps such as Pandora and Yelp and, for the first time in a Toyota, Apple CarPlay (but no Android Auto). The 2019 Corolla Hatchback is also the first North American vehicle to get the second-generation Toyota Safety Sense (TSS) suite of driver assists that's also standard on the base model. TSS 2.0 includes Toyota's Pre-Collision System (forward collision warning with automatic emergency braking) with new daytime and low-light pedestrian detection and daytime cyclist detection features, lane keeping and lane departure alert with steering assist, auto high beams, adaptive cruise control, and road sign detection. While the 2019 Corolla Hatchback sets a new benchmark in standard tech on a budget-mobile, competing cars aren't far behind. The 2018 Honda Fit LX, for example, includes forward collision warning with automatic emergency braking, lane departure warning and assist and adaptive cruise, while the automaker's Lane Departure Mitigation and Lane Watch camera system is added the two top trims.

Nissan starts building e-NV200 in Spain [w/video]

It doesn't look all that much like a Nissan Leaf, but the new e-NV200 that started production in Barcelona, Spain today shares its powertrain and lithium-ion battery with the world's most popular electric vehicle. The production version of the electric cargo van was unveiled late last year and today's manufacturing start is right on time with the company's previously announced timeline. The first exports will take place in June. The e-NV200 is Nissan's second all-electric vehicle, and the company says that powertrain line-up is "expanding." The vehicle itself will be available in a number of configurations in Europe: a light commercial van, a passenger vehicle and and electric taxi. Nissan has said in the past it is working on installing a fast-charging network of CHAdeMO stations in Barcelona, where the e-NV200 will be used as a cab. The e-NV200 will also be used as an electric taxi in Amsterdam. The zero-tailpipe-emission van is also being tested in Washington, DC with FedEx, but there is no confirmation that it will ever be commercially available in the US. There are a few more details, and a video, on the e-NV200 production start below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. NISSAN'S SECOND 100% ELECTRIC VEHICLE, THE e-NV200, STARTS GLOBAL PRODUCTION IN BARCELONA 05/05/14 Nissan e-NV200 is the second model in Nissan's expanding range of electric vehicles Barcelona plant starts production of Nissan's first electric van as part of ˆ431 million investment New electric van provides a zero-emission solution for urban cargo delivery and taxi companies Barcelona is the only Nissan plant to produce the e-NV200, which will be exported globally e-NV200 shares drivetrain technology with the world's best-selling electric vehicle - the Nissan LEAF BARCELONA – Nissan has started the production of its second all-electric vehicle, the e-NV200, which will soon be available in Europe as both a passenger vehicle and light commercial van. The ceremony was attended by Spanish Ministry of Industry, Jose Manuel Soria, Catalan President, Artur Mas; and the Mayor of Barcelona, Xavier Trias, who were welcomed by Nissan's Chief Planning Officer, Andy Palmer. The Nissan plant in Barcelona will be the global production site for this ground breaking zero-emission vehicle, which will be available as a light commercial van, passenger vehicle and electric taxi in the European market.