2011 Nissan 370z Base Coupe 2-door 3.7l on 2040-cars

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Watch Carlos Ghosn's news conference live from Beirut

The former head of Nissan-Renault says he's speaking out to clear his name and shed light on an unjust system of Japanese justice. Timeline: The rise, fall and flight of Carlos Ghosn Follow our Adam Morath, who has been maintaining a running summary on Twitter:   This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Government/Legal Nissan Renault Carlos Ghosn

Driving the Lincoln Aviator and flogging Abarths at Laguna Seca | Autoblog Podcast #593

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by West Coast Editor James Riswick and Associate Editor Joel Stocksdale. To begin, Greg takes a moment to remember the fastest woman on four wheels and former host of Autoblog's "The List," Jessi Combs, who died this week. Then our editors turn their attention to the cars they've been driving, including the Lincoln Aviator, Ford Ranger and Nissan Frontier, as well as Joel's recent stint in the Fiat 500 Abarth and Fiat 124 Spider Abarth, including track time at Laguna Seca. Finally, they turn their attention to a listener in Germany who is looking to replace an aging Volkswagen Eos with a newer convertible in this week's "Spend My Money" segment. Autoblog Podcast #593 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Remembering Jessi Combs 2020 Lincoln Aviator and Aviator Grand Touring 2019 Ford Ranger 2019 Nissan Frontier 2019 Fiat 500 Abarth and 124 Spider Abarth at Laguna Seca Spend My Money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.  

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.