2011 Infinity G37, 1owner, Clean Carfax, Leather, Navigation, Spreen Honda on 2040-cars

Auto blog

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 Q60 Concept a shadowy vision of future coupe

Until now, the Infiniti Q60 has been one of the brand's holdovers from its old naming scheme and previous design ethos, as a rebadged G37 Coupe. Those times are coming to an end though, because we are getting our first glimpse at a Detroit Auto Show-bound concept that previews the next-gen two-door. Infiniti's freshly released teaser shows the sport coupe concept in shadowy silhouette. Based on this photo, we can see that the Q60's design features delicately swooping lines with a touch of hard-edged contrast coming from sharp creases in the body. Portions of it, especially towards the rear, bring a little of the Q80 Inspiration from the Paris Motor Show to mind. A previous rumor suggests this shape is very close to the actual design of the production version. Infiniti subtly reiterates that in its release by saying the concept foreshadows the styling we might see in future products from the luxury automaker. Scroll down to read the concise announcement for the Q60 concept. Infiniti Q60 Concept: The Power of Exhilaration December 12, 2014 Hong Kong – Infiniti today gives an intriguing first look at the premium sports coupe concept to be displayed at the 2015 North American International Auto Show (NAIAS) in Detroit. Muscular lines are revealed in the silhouette of the Q60 Concept: pure, well-defined contours, making the concept's intentions easy to understand at first glance. Overall proportions and full-sized wheels placed out at the corners of Q60 Concept make an unmistakable design statement and add to the exhilaration of the performance coupe. This latest concept builds upon the design language seen on recent Infiniti concept cars, foreshadowing the strong visual consistency to be a key ingredient of products in the future Infiniti lineup. ENDS

Production Infiniti QX80 will be revealed at Dubai Motor Show

Back at the New York auto show, Infiniti showed the QX80 Monograph concept, which indicated what direction the updated production QX80 would go. At this year's Dubai auto show, we'll get to see how close the QX80 gets to the concept, since that's where the production car will debut. And thanks to some teaser images from Infiniti, we get a solid sneak peak at the SUV. Immediately apparent is that many key styling cues have made it to production, but the overall car has been notably toned down from the already relatively conservative concept. We're glad to see that the headlights have completed their trip up the front fascia, matching up better with the corporate trapezoidal grille and providing a wider, more aggressive look. The jutting, Leno-esque lower valence of the concept has been reduced to more modest proportions, but the basic shape of the lower grilles remains the same. It also appears that the fenders haven't been pumped up as much as the concept's. The mild redesign matches what will probably be very mild mechanical changes. Previous reports have said that the new QX80 will retain the same platform and powertrain as the current model. We wouldn't be surprised, though, if there have been some suspension tweaks and maybe a few extra horsepower squeezed from the current 400-horsepower 5.6-liter V8. Also, though Infiniti hasn't revealed when the SUV will go on sale, we would expect it to arrive at dealers early next year. Related Video: Featured Gallery 2019 Infiniti QX80 Image Credit: Infiniti Infiniti SUV Luxury Off-Road Vehicles dubai motor show infiniti qx80 infiniti qx80 monograph