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A look inside Infiniti's variable-compression engine

We're sympathetic to anyone who had trouble understanding what's going on with Infiniti's new variable-compression engine. While we got a full tech briefing on the novel VC-Turbo back in August, the visual aids were lacking. The cutaway engine Infiniti brought to the Paris show fixes all of that. You can thank the little green and pink lines on the cutaway for making the whole idea a little more clear. Click through the gallery to see two lines – one green and one pink – that represent the different strokes allowing for different compression ratios. Remember, the compression ratio is the amount of volume in the cylinder on intake compared to the amount at the end of the compression stroke. Leave more room at the end and you lower that ratio. The length of the stroke doesn't change with this system, but where it sits along the cylinder does. Hence those two lines. The variable compression ratio allows this new turbocharged engine to maximize fuel economy when the turbo isn't needed by raising the compression ratio. It will see its first use in the next Infiniti QX50 crossover, previewed by the QX Sport Inspiration concept that's also on display in Paris, and has performance targets of 268 horsepower and 288 pound-feet of torque. After, it will migrate to other Infiniti and Nissan vehicles, with transverse front-drive-based applications first in line. Eventually, it's likely to completely replace Nissan's corporate 3.5-liter V6. We'll be poking around the engine a little more in Paris today to try and get some more info. For now, enjoy those cutaway images and those friendly little lines. Featured Gallery Infiniti VC-Turbo engine cutaway View 14 Photos Paris Motor Show Infiniti Nissan Technology Emerging Technologies engine 2016 paris motor show

Nissan won't downsize the next Armada

The Nissan Armada is aptly named, because in relative automotive terms, it's not just the size of a ship - it's the size of a whole fleet. And that, according to reports, isn't about to change.
While many of the larger SUVs on the market are gradually being phased out or replaced by smaller crossovers, Nissan apparently plans on keeping the Armada right where it is. And that means a large, truck-based, eight-passenger colossus, because there are buyers out there who expect no less and Nissan isn't about to lose them to the likes of the Toyota Sequoia, Ford Expedition and Lincoln Navigator, or a General Motors lineup that includes the Chevy Suburban and Tahoe, GMC Yukon and Cadillac Escalade.
That doesn't mean that the next Armada - which Edmunds expects will arrive in 2015 or 2016 - will be immune to constricting environmental regulations, so Nissan will have to get creative. A vehicle the size of the Armada has all the aerodynamic efficiency of the side of a barn, but Nissan is reportedly aiming to streamline that in order to boost efficiency, for starters.

U.S. auto sales fall in July, as Detroit dials back on inventory, rental sales

DETROIT — U.S. carmakers said on Tuesday they continued to slash low-margin sales to daily rental fleets in July as General Motors, Ford and Fiat Chrysler Automobiles struggled to curb a slide in retail sales. July is on track to be the fifth straight month in which the annual pace of car and light truck sales declined from the same month a year ago, in part because of fewer fleet sales, analysts and industry executives said. July 2016 sales hit a strong 17.9-million-vehicle pace. GM said the seasonally adjusted annual sales rate fell to an estimated 16.9 million vehicles in July. At midmorning on Tuesday, GM shares were down 3.4 percent at $34.77, Ford was down 2.8 percent at $10.91, and Fiat Chrysler shares were down 0.3 percent at $12.05 in New York. GM sales dropped 15 percent from a year ago to 226,107 vehicles, as the company cut rental fleet sales more than 80 percent. The automaker said inventories of unsold vehicles at month's end were 104 days, down from 105 days at the end of June. GM has promised investors to reduce inventories to 70 days by year-end. Ford said its July sales dipped 7.5 percent to 200,212 vehicles, as it cut fleet sales more than 26 percent. Inventories fell to 77 days from 79 the previous month. Fiat Chrysler said sales dropped 10 percent to 161,477, as it also cut back sales to daily rental fleets. Among the top Japanese companies, only Toyota reported a year-to-year gain, with sales up 4 percent to 222,057 — just 4,000 units behind GM. Honda sales were down 1 percent to 150,980 — its first-quarter sales continuing to decline in North America but seeing a big increase in China. And Nissan sales fell 3 percent to 128,295. GM, Ford and Fiat Chrysler have cautioned that second-half financial results likely will be lower than first-half results, in part reflecting production cuts in North America and pricing pressures. The automakers this year have been deliberately dialing back sales to rental-car companies, which often generate little to no profit, while struggling to keep retail sales from sagging further, according to industry analysts. Industry consultant LMC cut its full-year forecast for new vehicle sales to 17 million vehicles. Automakers sold a record 17.55 million vehicles in the United States in 2016.