2004 Infiniti Qx56 Base Sport Utility 4-door 5.6l on 2040-cars

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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.

2021 Infiniti QX80 gets simultaneously more and less expensive

Infiniti has released pricing for the 2021 QX80, and the brand's range-topping SUV sails into the new model year with revisions to its trim lineup and minor equipment changes. The starting price of the QX80 rises, but the asking price for the fanciest version is lower for 2021. The entry-level QX80 is again the Luxe, and in rear-wheel-drive form, it starts at $70,445 (with $1,395 destination) or $73,545 with all-wheel drive. Both figures represent an increase of $2,300 over 2020. A new middle-level trim is the Premium Select, and it steps in for last year's Edition 30 model, featuring that version's dark-chrome exterior accents and 22-inch wheels. Prices for the QX80 Premium Select are $74,745 (RWD) and $77,845 (AWD), which are $3,100 more than last year. For those with a hankering for the very finest of QX80s, however, the news is better. In place of last year's Limited, the new range-topper is the Sensory, which includes Infiniti's Hydraulic Body Motion Control System. The Sensory is $81,595 with rear-wheel drive and $84,695 with AWD. And while that's not cheap, it's some $8,000 less than what Infiniti was asking for the 2020 Limited. The big tech news for 2021 is the Infiniti's rear camera mirror has higher resolution and a larger viewing surface. Previously standard on the top trim, it's now included on all models. Last year saw the arrival of larger display screens in the dash and the instrument cluster. No changes are on hand in the engine room, where the QX80 continues to be motivated by Nissan's 5.6-liter V8 that makes 400 horsepower and 413 lb-ft of torque, dispatched by a 7-speed automatic transmission. The 2021 Infiniti QX80 is on sale now. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.    

Infiniti offers chance to design Sebastian Vettel's helmet for the USGP

The Circuit of the Americas will host its second United States Grand Prix in November, and based on what's happening with New Jersey it might be the only US torch left alight in the Formula One firmament. The story even before the inaugural event was about getting American fans involved, and Infiniti appears to be making the first splash this year with a competition to design Sebastian Vettel's helmet for the first two days of race weekend.
The only thing required of the graphic designer within you is to head to the competition site, download the helmet template and slather it in your unique technicolor vision. It will require some thought to make something interesting, though, since much of the helmet is already committed to team and sponsor logos; other than a few thin strips along the sides, your creativity will be confined to the oval atop the shell. Vettel will choose the winner and will wear the selected lid during the free practices and qualifying.
The grand prize winner will also get a VIP trip for two to the grand prix as a guest of Infiniti, which includes some face time with the triple world champion himself. The contest is on now, the deadline for entries is 11:59 pm GMT (6:59 EST), Sunday, September 29th and the winner is chosen the very next day. There's a press release below with more info if you want the complete skinny before putting stylus to digital paper.