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Renault-Nissan promises 10 autonomous models through 2020

Renault-Nissan boss Carlos Ghosn promised back in 2013 to have autonomous technology on the road by 2020, and now the automaker has pledged to have more than 10 models ready in that time with varying levels of autonomous capabilities. The company claims it will offer these systems to customers around the world at affordable prices in major markets like the US, Europe, Japan, and China. Renault-Nissan will introduce driverless tech in multiple phases over the next four years. The first step will come later this year with the introduction of a single-lane autonomous system that will be able to go down the highway and manage stop-and-go traffic automatically. The next innovation in 2018 will offer multi-lane capability, and the ability to automatically pass other vehicles on the road. Another big jump will come in 2020 with the ability for models to navigate intersections and urban areas without a driver's control. Renault and Nissan engineers will develop all of this together, and the results will be available in both of the company's brands. Ghosn explained this roadmap towards an autonomous future last year but cautioned that Renault-Nissan didn't plan to take complete control away from owners. Instead, the company sees these systems as a way to make people even safer behind the wheel by reducing the chance for driver error. The automaker's deliberate introduction strategy is prudent because it can potentially adapt to proposed regulations that could mandate rules on how piloted vehicles operate. RENAULT-NISSAN TO LAUNCH MORE THAN 10 VEHICLES WITH AUTONOMOUS DRIVE TECHNOLOGY OVER THE NEXT FOUR YEARS World's fourth largest car group confirms autonomous drive and connectivity timeline through 2020 Fatal and serious injuries have been significantly reduced; new technologies will help make cars even safer Car group hires new executive to oversee connectivity and connected car services globally SUNNYVALE, Calif. – The Renault-Nissan Alliance will launch more than 10 vehicles with autonomous drive technology in the next four years. The global car group confirmed today that it will launch a range of vehicles with autonomous capabilities in the United States, Europe, Japan and China through 2020. The technology will be installed on mainstream, mass-market cars at affordable prices. In addition, Renault-Nissan will launch a suite of new connectivity applications that will make it easier for people to stay connected to work, entertainment and social networks.

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.

Nissan BladeGlider Concept shows its inner DeltaWing

Just like the DeltaWing and ZEOD RC racecars, it takes seeing the Nissan BladeGlider concept live to get a true appreciation for its design. But that doesn't mean it's any less weird. The wedge-shaped, three-seat concept car hit the stage today at the Tokyo Motor Show, and Nissan says the car is an "exploratory prototype" for a future production model.
The BladeGlider is defined by its design with front wheels that are just about three feet apart, while the rear has a more conventional track. Opening the scissor doors reveals a center driving position flanked by two passenger seats with a cockpit-inspired design. Although no power figures were revealed for the conceptual vehicle, Nissan does say that the BladeGlider is an all-electric vehicle with its battery pack mounted toward the rear of the car helping to provide a 30/70 weight distribution front to rear.
Check out our live images of the BladeGlider as well as the Nissan press release below.