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To solve diesel problem, VW might need two fixes

Volkswagen says that a fix is on the way for its 11 million vehicles around the globe that are equipped with diesel engine software that can evade emissions tests. The problem might be far more complicated than simply creating a single solution for all of them, though. According to Automotive News citing Reuters, two remedies to cover different NOx-reducing systems could be necessary, and both potentially affect performance. Earlier examples of the EA 189 diesel engine used a lean NOx trap to reduce the harmful material coming from the tailpipe. According to experts in the Automotive News report, a software update might allow the engines to achieve compliance, but that could affect fuel economy. VW already tried this route once before the scandal came to light, but tests by the California Air Resources Board still showed the figures were too high. Later, some of the 2.0 TDI engines began using Selective Catalytic Reduction that reduced NOx by injecting a urea solution into the exhaust stream. According to Automotive News, a software update for this equipment might increase the amount of the substance used. Not only would that mean topping up the fluid more often, but there still could be some reduction in fuel economy. But, since the 2-liter, 4-cylinder TDI engine that sits inside the diesel vehicles first mentioned as being affected by the issue in the US don't have a urea treatment system, VW would need to install them into these cars. VW still hasn't officially outlined its solution (or solutions) to the emissions issue but is expected to soon. The automaker's long-term evasion of regulations with these diesel engines pumped vast quantities of additional NOx into the air. The substance is known to be linked with smog and acid rain. The US Department of Justice is already beginning an investigation into the company, and politicians are pushing for harsh punishments.

1,682 miles in a 2014 Audi A8 L TDI - Part 1

We're going to skip the joke - because this isn't one - and get straight to the punchline: If the forthcoming 2014 Mercedes-Benz S-Class looks like it will lead the segment in interiors, the 3.0-liter turbodiesel in the 2014 Audi A8 L TDI takes the head of the table when it comes to engines.
After joining Audi for the 12 Hours of Sebring, we stood in the parking lot of The Inn On The Lakes on Sunday morning, our thousand-yard stare interrupted by the Citgo gas station across the street. We had one key, three bags, one white A8 L TDI, something like 17 gallons of diesel in the tank and one week to burn through it. For the purposes of a Quick Spin, we could have simply traipsed around the central Florida outback, all citrus, dusty scrubland and diners lifted from Cronenberg films, made short work of measuring the refinement and potential rarefaction of the oil burner under the hood and made our way back to the Orlando airport.
But dear readers, where would the adventure be in that?

Evo drives the Audi R18 E-Tron Quattro on track

Audi invited Evo scribe Richard Meaden to the Misano circuit in Italy to drive the Audi R18 E-Tron Quattro - and not just any R18 Quattro, were such a thing possible, but the No. 2 car that took first place at Le Mans this year driven by Marcel Fassler, Andre Lotterer and Benoit Treluyer. Meaden got just four laps in the diesel hybrid racecar - a warm-up, two hot laps and a cool down lap - so this wasn't about testing the R18 E-Tron's limits. In fact, Meaden makes it clear that such a thing isn't even possible for less than a professional driver; when driving at his limits (admittedly in Audi's very expensive car being watched by dozens of Audi engineer eyeballs), the data showed he was using 60 percent of the pedal effort of the professionals. Nevertheless, Meaden does have a lot to say about how the car delivers its massive ability, and with the wide-view shot of the cockpit we also get to see how busy and how intimate an endurance driver's office is. Check it out in the video above. News Source: Evo via YouTube Green Audi Racing Vehicles Videos evo