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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.

Infiniti will offer free wireless Apple CarPlay upgrades for 2020-2021 cars

Owners of 2020-2021 Infiniti products with Apple CarPlay should be happy to hear this news. Infiniti just announced that owners of those vehicles are now eligible for a free upgrade to wireless Apple CarPlay. The list of eligible models includes 2020-2021 Q50, Q60, QX50 and QX80. All of those vehicles already have Apple CarPlay and Android Auto, but they operate via a wired connection only. This upgrade will make it such that you no longer have to plug into your Lightning cable to have Apple CarPlay splashed across the screen. If you own any of the above vehicles, we’d recommend getting a service appointment to have the upgrade installed — the update is said to take less than an hour. Infiniti says the complimentary software update will be available from now until March 31, 2022. Basically, get it while you can. WeÂ’ve asked Infiniti if a similar upgrade was coming for Android users, as many other manufacturers offer wireless Android Auto in addition to wireless Apple CarPlay. All a spokesperson would say is that "Infiniti is looking at Android Auto for future vehicle integration." The lack of wireless Android Auto will be affecting about 20% of Infiniti owners, as even Infiniti approximates that 20% of its luxury buyers are not Apple users. At the very least, those owners will still have wired Android Auto. Related video:  This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

First Infiniti QX30 Concept image released ahead of Geneva Motor Show

After releasing a shadowy glimpse of the rear of the QX30 Concept a few days ago, Infiniti is finally shining some light on the premium compact crossover's backside ahead of the vehicle's full debut at the 2015 Geneva Motor Show on March 3. The QX30 is a thorough reworking of the brand's Q30 Concept from the 2013 Frankfurt Motor Show. Many of the same styling elements show up on the latest luxury crossover interpretation, but the touches are tweaked to better align with Infiniti's latest look. In addition to jacking up the ride height by 1.2 inches, the CUV gets hard creases in its sheetmetal and complicated 21-inch aluminum wheels that really grab the eye. The rear wears a contrasting dark purple stripe that separates the hatch area from the exhaust tips housed in the skid plate, and both concepts share a coupe-like proportion with the backseat door pulls hidden for a cleaner line. While not pictured, the company says the vehicle has a glass roof. Infiniti still isn't showing the aluminum-trimmed front of the concept yet, but the automaker admits that the styling on display here hints at the possibility of a future premium compact crossover, which isn't really a surprise. The company has talked about a production QX30 several times in the past. First image release of strong and stylish Infiniti QX30 Concept • Concept combines elevated crossover stance with strong coupe contours • World premiere at 2015 Geneva International Motor Show • Enhanced crossover is 30mm taller than Q30 Concept HONG KONG – Infiniti today provides the first full glimpse of the QX30 Concept, which will have its world premiere at the 2015 Geneva International Motor Show. The crossover concept hints at a future premium compact vehicle and gives a strong indication of the brand's commitment to this segment. Pushing design boundaries, the QX30 Concept combines the sleek lines of a coupe with the distinguishing features and higher stance of a crossover. Looking poised for action, yet fluid, it promises to deliver effortless capability with style. "We wanted the spontaneous fluidity of the QX30 Concept design to cut through the urban clutter and rigidity, reflecting its go-anywhere and spur-of-the-moment nature," said Alfonso Albaisa, Infiniti Executive Design Director.