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Infiniti QX80 Monograph: Not just luxury, 'upscale luxury'

We've been getting a slow rollout of news about the new Infiniti QX80 Monograph mega-SUV for the past week or two, and Infiniti provided more details Tuesday about its concept car at the New York Auto Show, saying the mega-SUV is a combination of "luxury with a commanding presence" and "the ultimate expression of futuristic luxury SUV design." Infiniti says the car embodies, not just luxury, but "upscale luxury." The company says the concept's design language incorporates a mix of geometric and organic shapes, including character lines and aluminum trim that were actually intended to make the big SUV appear even bigger than it actually is, which is more than five meters long, so perhaps 17 feet, more than 6 feet wide and about 6 feet tall. The most striking features are the headlamps, which become long, slender lines that wrap around the front corners, then taper into light bars that end at the doors in sculptured rear-view cameras in lieu of side mirrors. The car also has large, functional fender vents to divert air to the engine, and despite all that luxury it is still SUV enough to have an underbody cover protecting the underside - and improving aerodynamics. Likewise, an aerofoil between the tailpipes is said to improve airflow in the SUV's wake. It's a big, beautiful rig. Cue the beauty roll above and gallery below: View 12 Photos Related Video: Related Gallery Infiniti QX80 Monograph View 15 Photos Image Credit: Live photos copyright 2017 Drew Phillips / Autoblog.com Design/Style New York Auto Show Infiniti SUV Luxury 2017 new york auto show infiniti qx80 infiniti qx80 monograph

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 Q50 Eau Rouge running prototype driven by Sebastian Vettel

Infiniti's high-performance Q50 Eau Rouge concept might be one of the biggest teases in the current automotive world. It was first shown at the 2014 Detroit Auto Show as a body without an engine. Then, the sports sedan arrived at the Geneva Motor Show with a modified version of the turbocharged V6 from the GT-R under the hood, tuned to 560 horsepower and 443 pound-feet of torque, and with all-wheel drive. However, it was still just a concept. Finally, the Japanese luxury automaker is showing us what the Eau Rouge can do on the road - briefly.
The company brought reigning Formula One champ Sebastian Vettel along to get behind the wheel, for this all-too-short video from the Millbrook Proving Ground in the UK. There's more good news too. While Infiniti isn't saying that it's definitely going to build the Eau Rouge, it is "pressing ahead with the evaluation." More info about these tests will be released at the 2014 Beijing Auto Show at the end of April. Scroll down to watch Vettel drive the Q50 Eau Rouge and read a little more about it.