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Nissan unveils Altima-based V8 Supercars [w/videos]

Good as it is, when we think about the Nissan Altima, the words "V8" or "supercar" are not in our vernacular, but Nissan Motorsports is looking to change all that. After unveiling the race version of its Altima sedan intended for the Australian V8 Supercars series back in October, the four race teams and their cars were revealed yesterday ahead of a preseason test session this weekend.
Two of the Altima racecars will be sponsored by Jack Daniels while the other two will wear Norton (as in Norton Anti-Virus) black-and-yellow livery. The season officially kicks off on March 1, and we'll get to see the V8-powered Altima on US soil from May 17-19 when the V8 Supercars series hits the new Circuit of the Americas in Austin. Scroll down to watch a couple videos and a press release issued for the team introductions.

Nissan slashes profit forecast as Ghosn arrest hurts brand appeal

TOKYO — Nissan cut its profit forecast for the fiscal year through March on Wednesday to reflect slowing sales, higher costs and the fallout from a criminal investigation of its former chairman, Carlos Ghosn. Nissan Motor Co. expects to post a 319 billion yen ($2.9 billion) profit for the fiscal year, marking a 22% drop from its earlier 410 billion yen ($3.7 billion) forecast. Nissan said the downgrade reflects higher costs in the U.S. from a warranty extension campaign for some vehicles and falling sales due to "corporate issues," alluding to the Ghosn scandal. Ghosn was arrested in November and is facing charges of underreporting his income and breach of trust. He says he is innocent. He was released on bail in March and is awaiting another court decision on bail after his re-arrest on April 4. Nissan, which is allied with Renault SA of France, has seen sales lag in France and Japan, where Ghosn is widely known. In the U.S. and China, buyers aren't as affected by the scandal, but the markets there overall have slowed. Other factors contributed to the revision, such as production not keeping up with demand for the Note, an extremely popular model in Japan. But the high-profile scandal has weakened the brand appeal of the maker of the Leaf electric car, Infiniti luxury model and X-trail sports utility vehicle. Nissan said it expects to sell 5.5 million vehicles in this fiscal year. Earlier it predicted it would sell 5.6 million. The company sold nearly 5.8 million vehicles in the fiscal year that ended in March 2018. The automaker reduced its sales outlook by 0.2% for the fiscal year through March 2019 to 11.5 trillion yen ($103 billion), compared to its previous forecast. It was Nissan's second downgrade for its outlook following one in February that cited faltering sales in China and the U.S. At that time, Nissan also logged costs about 9.2 billion yen ($83 million) related to the alleged underreporting of Ghosn's compensation. Nissan has promised to strengthen its corporate governance to prevent a recurrence of what it says is serious wrongdoing by Ghosn. Ghosn was sent by Nissan's French alliance partner, Renault SA, to help turn the Japanese automaker around when it was near bankruptcy 20 years ago. The future of the alliance is one of many questions clouding Nissan's future following Ghosn's ouster since he was the main liaison for the alliance, which includes smaller Japanese automaker Mitsubishi Motors.

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.