2003 Infiniti Fx35 Base Sport Utility 4-door 3.5l 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.

Reveling in the reveals: BRZ, Civic, Wrangler, QX55

It’s almost like there should have been an auto show this week. If youÂ’re an enthusiast, you know the week before Thanksgiving is when the Los Angeles Auto Show kicks off. This year, thereÂ’s no L.A. show, at least until next May. But Subaru, Honda, Jeep and Infiniti rolled out significant new products this week, making us almost nostalgic for auto shows. Serendipity, or more likely previously allocated marketing budgets, gave us a familiar feel of new products, even though we couldnÂ’t feel or touch them under the bright lights of the Los Angeles Convention Center. LetÂ’s break them down: 2022 Subaru BRZ 2022 Subaru BRZ View 62 Photos Subaru stuck to basic formula here: The 2022 BRZ remains a rear-wheel drive sports coupe thatÂ’s supremely lightweight, adequately powered and attractive. Subaru debuts its new boxer four-cylinder in the BRZ. ItÂ’s rated at 223 hp and you need to rev all the way to 7,000 rpm to achieve that output. I'd prefer a bit more than the 184 lb-ft of torque the powerplant offers (reasonably low in the band at 3,700 rpm), for some more off-the-line grunt. Say 200 lb-ft, though itÂ’s almost a cliche to argue the BRZ is underpowered.  The outgoing BRZ is one of the purest cars IÂ’ve driven, so rather than harp on the power, which will ultimately be fine, give Subaru props for focusing on chassis improvements to improve rigidity by 60 percent and aid turn-in. Admirably, the curb weight is less than 2,900 pounds, and the manual in Premium trim checks in at the lowest, just 2,815 pounds.  Aesthetically, I like it. ItÂ’s busier than before, and thereÂ’s a lot more going on with the front fascia, wheel arches and fenders. ThereÂ’s a bit of a Porsche vibe up front, which is good, and a bit of a Honda Civic vibe in back (think 2010) thatÂ’s not.  ItÂ’s impressive that Subaru resisted the urge to gratuitously power up the BRZ and remained focused on the essence of its goodness and appeal to enthusiasts. 2021 Jeep Wrangler 392 2021 Jeep? Wrangler Rubicon 392 View 75 Photos What effect will the 2021 Ford Bronco have on the Jeep Wrangler? One school of thought is that it will actually make the Jeep better, and the 2021 Wrangler 392 is proof positive that will be the case. With the Bronco attracting spectacular levels of attention, Jeep could not sit idly by and remain focused on incremental changes. It needed to make a splash.

2019 Infiniti Q50 Signature Edition brings its flourishes to New York Auto Show

The 2019 Infiniti Q50 Signature Edition is coming to the NY Auto Show as a limited edition version of the sport sedan. Infiniti hopes to draw folks in with a new front and rear fascia, differentiating it slightly from the rest of the Q50s out there. Every Signature Edition will come equipped with the 3.0-liter twin-turbo V6 under the hood that produces 300 horsepower. The bright 19-inch alloy wheels seen on this car are Signature Edition exclusives, according to Infiniti. Then you get your requisite Signature Edition badging on the trunk of this Q50. The inside gets some special touches with "Kacchu" aluminum trim and full leather sport seats. Infiniti makes a bunch of pay options standard equipment on the Signature Edition. These features include Infiniti's ProAssist bundle that includes niceties like blind-spot warning, rear cross traffic alert and backup collision intervention. You get heated seats, a heated steering wheel and navigation, as well. Infiniti is offering the Signature Edition with five different colors: Black Obsidian, Graphite Shadow, Liquid Platinum, Pure White and Iridium Blue. You're looking at the blue in the one photo Infiniti has provided pre-auto show. Infiniti hasn't given pricing or how many Signature Editions it will build, but you'll be able to buy one in May this year. Expect a low number to be available and a higher price for the "exclusivity."