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Infiniti Q60 Project Black S packs F1-derived hybrid twin-turbo V6

At the 2017 Geneva Motor Show, Infiniti unveiled the Project Black S, a souped-up version of the Q60 coupe that packed technology derived from the Renault Sport Formula 1 Team's race cars. Details were scarce. Aside from some F1-inspired bodywork, all we knew was that the twin-turbo V6 would be paired with a kinetic energy recovery system, or KERS for short. At next week's Paris Motor Show, Infiniti is bringing a new concept that's a bit more polished as well as some additional details about what rests under the hood. The car is still dubbed the Infiniti Project Black S. The car still packs a twin-turbocharged 3.0-liter V6 paired with an energy recovery system. Infiniti claims the car makes 563 horsepower, up from 400 in the Q60 Red Sport 400. The Project Black S should hit 60 mph in fewer than four seconds. The powertrain uses three motor generator units (MGU) and a single MGU-K that harvests brake energy. Two electric turbochargers harvest heat energy from the exhaust, meaning the car can gain energy both under braking and acceleration. Visually, there's not much that's changed from last year's Geneva concept. We only have one new photo, but to our eyes the only difference is a few yellow accents on the front bumper. We'll have to wait until next week's reveal for more photos. Related Video:

Infiniti previews a new... something

Sometimes we get a teaser image and accompanying statement where we can at least surmise what the automaker is up to. This is not one of those times.
The automaker, in this case, is Infiniti, and the teaser image shows only a grille with a similar shape to what you'd find on most of the company's products, albeit with a curvier mesh. Which isn't much to go on, really, and the accompanying statement (which you can read below in its forty-word entirety) doesn't give us much more. All it says is that the vehicle in question - which we'll wager is a concept car instead of a production debut - has "style and substance" embodied in a "vision... on a scale not seen before" from Infiniti.
Given the French peppered into the release and the encroaching chronological proximity of the Paris Motor Show, we'd guess that's where Infiniti will reveal this latest but of inspiration, but just what form it will take is still a mystery.

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.