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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.

Lebanon may lift Ghosn's travel ban if files not received within 40 days

BEIRUT — Lebanon may lift a travel ban on ousted Nissan boss Carlos Ghosn if files pertaining to his case do not arrive from Japan within 40 days, caretaker justice minister Albert Serhan said in a statement on Friday. Ghosn fled Japan to Lebanon, his childhood home, last month as he awaited trial on charges of under-reporting earnings, breach of trust and misappropriation of company funds, all of which he denies. His dramatic escape has raised tensions between Japan and Lebanon, where Ghosn slammed the Japanese justice system at a two-hour news conference on Wednesday, prompting Japan's Justice Minister to launch a rare and forceful public response. Lebanon has no extradition agreement with Japan. Serhan said in the statement that he had met with the Japanese ambassador to Lebanon and reaffirmed the importance of the relationship between the two countries. He also said that Ghosn's wife Carole will also be questioned by Lebanese prosecutors when authorities receive an Interpol notice for her. "Carole will be subject to the same procedures that were followed for (Carlos) when the red notice was received from Interpol." Tokyo prosecutors on Tuesday issued an arrest warrant for Carole for alleged perjury related to the misappropriation charge against her husband. A spokeswoman for Carole said that she had voluntarily returned to Japan nine months ago to answer prosecutors' questions and was free to go without any charges, adding that the warrant was "pathetic". A fair trial? Carlos GhosnÂ’s lawyer on Friday told JapanÂ’s government that the authorities had failed to arrange for a fair trial that respected universal rights. Francois Zimeray, French lawyer for Ghosn, said that it had been for JapanÂ’s prosecutors to prove GhosnÂ’s guilt, not for Ghosn to prove his innocence. “It belongs to the prosecution to prove guilt and not to the accused person to prove its innocence,” Zimeray said in a statement. Japanese Justice Minister Masako Mori launched a rare and forceful public takedown of auto executive-turned-fugitive Ghosn after he blasted the countryÂ’s legal system as allowing him “zero chance” of a fair trial as he sought to justify his escape to Beirut. Reporting by Hoda Monem, Dominique Vidalon and Richard Lough. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Government/Legal Nissan Renault Carlos Ghosn

Infiniti is pulling out of Western Europe, cutting models

BEIJING — Nissan's premium brand Infiniti has announced it will exit Western Europe early next year, as it restructures its global operations and focuses on the world's top two auto markets. Infiniti said it will discontinue the Q30 sedan and the QX30 sport-utility vehicle and cease their production by the middle of 2019 at Nissan's manufacturing factory in Sunderland, England. Both models are sold globally but produced only in Britain. The QX30 is sold in the United States. The move comes as Infiniti seeks to divert its resources to markets with bigger opportunities, such as China and the United States, from a region where non-European premium brands are struggling to compete against local players such as Audi, BMW and Mercedes-Benz. Nissan also recently scrapped plans to build its new X-Trail SUV in Britain amid the uncertainty surrounding Brexit, saying it had taken the decision to optimize its investments by building the next generation model in Japan. "Western Europe remains the most challenging and competitive region for premium cars," Infiniti's chief spokesman, Trevor Hale, told Reuters. Infiniti's sales in western Europe almost halved last year to 5,800 vehicles. In addition to the tough competition, the Japanese premium brand, headquartered in Hong Kong since 2012, has struggled to effectively meet emissions and other regulatory requirements in the region, Hale said, referring to stringent Euro 6 emissions requirements and other regulatory challenges. "The commercial reality for Infiniti in Western Europe is that there is simply no visibility of a viable and sustainable business, especially given the regulatory challenges," he said. Infiniti said an exit from Western Europe will allow it to focus on its initiative to electrify a good portion of its product portfolio from 2021 and discontinue diesel offerings. The brand plans to focus more on its SUV lineup in North America, bring five new or significantly-redesigned vehicles to China over the next five years, improve quality of sales and residual value and realize more synergies with Nissan. "This is all part of Infiniti's vision to become a top challenger brand in the premium segment," it said. As it prepares to withdraw from Western Europe, Infiniti said it is working to find alternative opportunities for employees who would be affected, consulting with employee representatives where necessary and identifying opportunities for transition and training support where appropriate.