2007 Infiniti G35 X on 2040-cars

Auto blog

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 and Steph Curry team up for hilarious 'ugliest car ever' prank

Stephen Curry, the famous Golden State Warriors basketball player, and Infiniti just pulled an epic and cringeworthy prank on Curry's friend COSeezy. In case you hadn’t noticed the commercials, Curry is a brand ambassador for Infiniti, so heÂ’s pretty tight with the Japanese luxury brand. The MVP invited his friend over to help him shoot a commercial for a mysterious new Infiniti concept car that Curry “helped design.” COSeezy was there to react to what would surely be an incredible piece of machinery. What Curry ended up showing him was a GO-4. You may have seen one of these crawling along city streets doing the odd job or two, and thereÂ’s absolutely nothing glorious about them. Curry dressed this particular GO-4 out with one hell of a body kit in an attempt to fool COSeezy into thinking it was a fancy new concept car. And he succeeded. Take a gander at the footage and have a laugh for yourself — things get rather awkward and embarrassing for COSeezy as the video goes on. But hey, thatÂ’s what pranks are for. In case you were wondering, the luxurious GO-4 features a 1.0-liter three-cylinder engine that puts out 66 horsepower. It has a four-speed automatic transmission and achieves a claimed 45 mpg. The vehicle looks ridiculous, though, and thatÂ’s pretty much all that matters here. Infiniti did pull an actual concept car out of a nearby garage after they let COSeezy know it was a prank. They had the QX Inspiration Concept on hand — itÂ’s the crossover Infiniti showed at the Detroit Auto Show this year.

Nissan recalls Rogue, Pathfinder, Infiniti QX60 for seat issue

Nissan and Infiniti are recalling their 2023 Rogue, Pathfinder and QX60 SUVs and CUVs to address a potential defect in their seat frame welds that can allow the frames to fail in the event of a collision. The number of vehicles that potentially shipped with weak welds is rather small — just over 12,000 — but the issue could nonetheless lead to injury if a failure occurs during a collision.  "The driverÂ’s powered seat may not be fully secured to the seat frame on certain Nissan Rogue, Pathfinder, and INFINTI QX60 vehicles," Nissan's report to NHTSA said. "As a result of this issue, the seat frame welds may detach from the rear inboard seat bracket. If this condition occurs, it may increase the risk of injury to the occupant in the event of a crash. In addition, the seat frame assembly may not meet certain FMVSS 207 and FMVSS 210 requirements because of this condition," Nissan said.  Nissan says there's no easy way for customers to detect the issue ahead of time, and that its seats need to be inspected by a service tech to see whether it is properly secured. Dealers will be instructed to check the driverÂ’s seat rail clearance to the inboard seat bracket, and if necessary, the dealer will remove and replace the affected driverÂ’s seat cushion frame, NIssan said. The entire procedure should take less than two hours.  Owners of affected vehicles should look for notices to be delivered no later than June.  Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Recalls Infiniti Nissan Crossover SUV Luxury