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Weekly Recap: Volkswagen moves forward under Muller

Most stunning was the speed of it all. On the morning of September 18, Volkswagen AG stood atop the automotive world. It was profitable and sold more cars than Toyota and General Motors, its two main rivals for global supremacy. By nightfall, the company would be embroiled in scandal. Revelations the German auto giant cheated on diesel emissions testing in the United States reverberated from Washington to Wolfsburg, Germany. What started out as a problem with 482,000 VWs and Audis in the US exploded into an international scandal. Millions of vehicles have the rigged software, meaning VW broke environmental rules as its cars spewed pollutants all over the world. The fallout began immediately. Volkswagen CEO Martin Winterkorn – one of the most respected and capable executives in the business – apologized on Sunday and Tuesday. On Wednesday he resigned. As the week progressed, the company's stock took a beating and credit agencies threatened to drop their ratings. VW dealers and owners said they felt betrayed. The automaker hired a law firm that defended BP after the Deepwater Horizon oil spill. The EPA is already extending its testing procedures to look for "defeat devices" like the ones used by Volkswagen. On Friday the company announced a major restructuring. Matthias Muller, Porsche's chief for the last five years, took over as CEO of Volkswagen and is charged with picking up the pieces of a shattered company facing regulatory action and lawsuits. With GM, Toyota, and Takata scandals still fresh, Volkswagen will likely experience unprecedented levels of scrutiny. Additionally, VW's markets in the United States, Canada, and Mexico will be combined into a North American region under the leadership of former Skoda boss Winfried Vahland, though US chief executive Michael Horn will stay on. The company is also realigning its brands by specialty and streamlining its board. Firings, government action, restructurings, and international outrage – things that usually build up over months or years – all occurred in about a week. With dizzying speed, Volkswagen's future has changed dramatically. It all happened, it's still happening, so fast. OTHER NEWS & NOTES 2016 Buick Cascada to start at $33,990 Buick hasn't made a convertible in 25 years. That's a whole person who can drink plus a kindergartner. So it's been awhile. Enter the 2016 Buick Cascada. It has top-shelf Opel engineering, slinky design, and it's reasonably priced.

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.

Infiniti confirms new "premium compact" to be built in UK

Aside from certain naming-related news, Infiniti has actually had some decent product news to announce this week. The company's president, Johan de Nysschen, alluded to a new 550-horsepower performance sedan, and now the automaker has confirmed that a new "premium compact" will go into production in 2015. Based on the fact that this new model will be built alongside the Nissan Leaf at the automaker's Sunderland, UK assembly plant, we could only hope that it's a production version of the LE Concept (shown above).
Sunderland already produces Nissan products like the Qashqai, Juke and Note, and as a part of an investment of 250 million British pounds (around $406 million USD) for the new model, the plant would add an extra 280 jobs with the capacity to build 60,000 of the new Infinitis annually. Adding the premium compact at Sunderland means that Infiniti will have to change its plans for another new model, a bigger "C-segment hatchback," which could very well be a production version of the Etherea Concept.