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Infiniti QX Sport Inspiration Concept previewed ahead of Beijing debut

Infiniti's exterior design has been on point lately. The Q50, QX30, and especially the new Q60 Coupe are among the best looking vehicles in their respective segments. The company's designers even managed to make the homely QX60 look good. And now, those same stylists have issued their official preview of the successor to the QX50. It's called the QX Sport Inspiration Concept and will make its official debut tomorrow at the 2016 Beijing Motor Show. It's not hard to look at this stylish concept and imagine the second-generation QX50, formerly known as the EX. The proportions are just right, for one. The rear overhang is perilously short and the rear glass is raked aggressively – both work with the squat greenhouse and powerful hood to cut a sporty silhouette. The QX Sport Concept's headlights are better looking than the current model's, but still provide a menacing scowl as they flank the trademark Infniti grille. We like the large, air-curtain-style vents behind the front wheels, too; they're a more aggressive, functional take on the current QX70's side vents. The QX Sport's cabin is bisected by a high transmission tunnel, emulating the cockpit-like layout of the current model. And like in that car, this driver-focused layout demands driver-focused interfaces, like the flat-bottomed steering wheel and aggressive, single-piece bucket seats. We wouldn't count on that last item making the production shortlist, though. We'll have more on the QX Sport Inspiration Concept when it debuts tomorrow evening. Stay tuned. Related Video:

Nissan recalls Rogue, Pathfinder, Infiniti QX60 for seat issue

Nissan and Infiniti are recalling their 2023 Rogue, Pathfinder and QX60 SUVs and CUVs to address a potential defect in their seat frame welds that can allow the frames to fail in the event of a collision. The number of vehicles that potentially shipped with weak welds is rather small — just over 12,000 — but the issue could nonetheless lead to injury if a failure occurs during a collision.  "The driverÂ’s powered seat may not be fully secured to the seat frame on certain Nissan Rogue, Pathfinder, and INFINTI QX60 vehicles," Nissan's report to NHTSA said. "As a result of this issue, the seat frame welds may detach from the rear inboard seat bracket. If this condition occurs, it may increase the risk of injury to the occupant in the event of a crash. In addition, the seat frame assembly may not meet certain FMVSS 207 and FMVSS 210 requirements because of this condition," Nissan said.  Nissan says there's no easy way for customers to detect the issue ahead of time, and that its seats need to be inspected by a service tech to see whether it is properly secured. Dealers will be instructed to check the driverÂ’s seat rail clearance to the inboard seat bracket, and if necessary, the dealer will remove and replace the affected driverÂ’s seat cushion frame, NIssan said. The entire procedure should take less than two hours.  Owners of affected vehicles should look for notices to be delivered no later than June.  Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Recalls Infiniti Nissan Crossover SUV Luxury

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.