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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.

Leopard walks in, shuts down a Mercedes-Benz plant

In recent months the auto industry has seen plant closures due to a host of reasons — parts shortages, recalls, natural disasters, and even a once-in-a-lifetime pandemic. Now it can add to that list the threat of an invading leopard. A Mercedes-Benz factory in Pune, India, was forced to halt production for a few hours when a wayward jungle cat wandered into the facility, When the 3-year-old male leopard was spotted inside the manufacturing unit of the factory, it caused a panic among workers, according to a release by rescue organization Wildlife SOS discovered by The Drive. The site was shut down for about six hours as a Wildlife SOS rapid response team from the Manikdoh Leopard Rescue Centre and the State Forest Department safely removed the curious cat. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. The team's veterinary officers Dr. Nikhil Bangar and Dr. Shubham Patil carried out the rescue operation, tranquilizing the feline and loading it into a wildlife carrier. The rescue took about four hours, and Wildlife SOS reports that neither the creature nor any workers sustained injuries. The leopard was released back into the wild.  No one is quite sure how it got onto the factory grounds, but Wildlife SOS says that the forests in the surrounding region have one of the highest densities of leopards in the world. It's also suffering from rapid deforestation. That encroachment by humans has led to a decrease in the leopard's natural prey as well, so wildlife experts think it may have been looking for food.  The Mercedes plant builds the Maybach S 560, S-Class, E-Class Long Wheelbase, C-Class, CLA, GLA, GLE and GLS for the Indian market.  We have a different theory. We believe that the cat was seeking to set the record straight with Mercedes. When the S 65 AMG debuted, Mercedes claimed it featured the world's first Road Surface Scan technology to detect pavement undulations and adjust suspension damping accordingly. The only problem with that claim: Nissan had the technology some 30 years earlier in several mid-80s models, including the Maxima and Japan's version of the Infiniti M30, which was called — you guessed it — the Leopard. 

Infiniti to move forward with 'Nissan-plus' strategy for its future cars

Sales at Infiniti in 2019 were down in the dumps. While the market as a whole fell 1.2%, Infiniti brand sales were down 21%. Nissan wasn’t too far behind, with its sales sliding 9.9% year-to-year. None of those numbers look great, but Nissan COO Ashwani Gupta still sees a path forward for NissanÂ’s luxury brand, Infiniti. “We will bring back Infiniti as Nissan-plus, in terms of product and technology," Gupta told Automotive News. “Infiniti will be great again.” Historically-speaking, Infiniti has been “Nissan-plus” for a long time over the years. Many vehicles in its lineup have been re-skinned versions of Nissans with some luxury thrown into the mix, and thatÂ’s not necessarily a bad thing. There have been some standouts, namely the original Q45 with its pioneering active suspension and shockingly sporty dynamics. And then there are the G coupes and sedans, vehicles that are still desirable to enthusiasts today. View 31 Photos InfinitiÂ’s current enthusiast offerings revolve around the Q50 sedan and Q60 coupe, both of which are rear-wheel-drive (or all-wheel-drive) cars with sporting intentions. ThereÂ’s no equivalent Nissan sold in America, but the Q50 is the Nissan Skyline in Japan. ItÂ’s impossible to know what the fate of these rear-drive-based cars will be, but a few possibilities lie ahead. Infiniti could really lean in to the “Nissan-plus” nomenclature and repurpose the new Altima as an Infiniti sedan. More likely, however, is a move to electrification. The Nissan IMs Concept and Infiniti Q Inspiration Concept both suggest that the company is interested in creating electric sedans. A “Nissan-plus” electric sedan sure sounds a whole lot better than a front-drive-based rebadged Nissan. InfinitiÂ’s biggest problem at this second is the lack of new product on the market. Its QX50 crossover is the most recent big redesign weÂ’ve been witness to, but it needed replacements yesterday for the QX60, Q50 and Q60 to be competitive with others in those segments. Both Lexus and Acura are outpacing Infiniti by a wide margin. The path forward as “Nissan-plus” also suggests Infiniti aims to be a premium brand, rather than a full-fledged luxury brand competing toe-to-toe with Audi, BMW and Mercedes-Benz. ThatÂ’s consistent with how the brandÂ’s cars have stacked up in recent years, even as it collaborated with Mercedes to put an Infiniti badge on the GLA crossover.