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West Virginia researcher describes how Volkswagen got caught

The cheating scandal engulfing the world's largest automaker started with a road trip. In the spring of 2014, researchers from West Virginia were evaluating the tailpipe emissions of diesel cars made for the American market by European manufacturers, something never before studied in the academic realm. Excited by the prospect of breaking new ground, the team of two professors and two students wanted to gather as much data as possible. "And being academics, we went a little overboard," said Arvind Thiruvengadam, one of the students. "Being academics, we went a little overboard." Overboard included driving the cars for more miles than they needed to test and verify results. Drivers put about 1,500 miles on each of the first two cars in the study, a Volkswagen Jetta and BMW X5, along California roadways. For their final car, a Volkswagen Passat, they wanted even more mileage. So they took the car on a road trip from Los Angeles to Seattle and back again, collecting data from more than 2,000 miles of testing. The road trip was Volkswagen's undoing. When the West Virginia team returned to Los Angeles, they were befuddled by the test results. In theory, the Passat should have spewed the lowest levels of pollutants among the three cars. Equipped with the more modern selective catalytic reduction technology, the team expected to find minimal levels of nitrogen oxide. But the car, which had been certified at a California Air Resources Board facility prior to the start of the road trip, had elevated levels of NOx that were 20 times the baseline levels established beforehand. The researchers, comprised of professors Gregory Thompson and Dan Carder and students Marc Besch and Thiruvengadam, knew their on-board equipment functioned properly because, early in their research, they had double-checked its accuracy after recording sky-high NOx readings from the Jetta that showed 30 times the level of its baseline testing at the CARB facility. It was particularly noteworthy because the Jetta contained the first-generation Lean NOx Trap technology, not the more efficient SCR, yet both produced large discrepancies. The BMW, on the other hand, performed as expected. Today, Thiruvengadam is careful to say the research team never suspected Volkswagen of cheating on emissions testing, nor did the researchers report such a finding. They merely reported their findings to CARB officials who then further investigated.

Recharge Wrap-up: Volkswagen adopts CCS Combo plug, Tesla adds Trip Energy Prediction

Volkswagen plans to use CCS Combo plugs as standard for all future plug-in vehicles. The CCS fast-charging allows cars to charge to 80-percent capacity in as little as 15 minutes for cars like the Cross Coupe GTE. This could be a boon to prospective customers, as studies have found plug-in hybrid drivers plug in more frequently than originally expected. Plug-in drivers seem to want to perform as much driving as possible using electricity alone, and VW's plan to adopt the CCS Combo plug could help drivers achieve that. Read more at Green Car Reports. Tesla's 6.1 Firmware update for the Model S includes a Trip Energy Prediction feature. The new feature takes into account things like elevation, speed and predicted driving behavior to estimate the amount of energy used and how much range will be left in the battery after a route is programmed into the navigation system. It can let the driver know if a round trip can be made, and if the driver will need to charge before heading out. The feature updates itself in realtime throughout the drive as well, responding to how much energy is actually being used. Read a rundown of Trip Energy Prediction at Teslarati. The dates for National Drive Electric Week have been set for Saturday, September 12 through Sunday, September 20, 2015. The grassroots celebration of EVs is organized by Plug In America, The Electric Auto Association and the Sierra Club. "We're revved up for National Drive Electric Week 2015, which will offer the public, the media, and policymakers a great opportunity to come check out many of the 20-plus plug-in vehicles on the market," says Sierra Club EV Initiative Director Gina Coplon-Newfield. Last year, more than 90,000 people participated in 152 cities worldwide. Read more in the press release below. National Drive Electric Week 2015-DATES ARE SET SAN FRANCISCO, Calif., Jan., 20, 2015-Dates have been set for the fifth annual National Drive Electric Week: Sat., Sept. 12 through Sun., Sept. 20, 2015. Events will encompass two weekends to give planners maximum flexibility and consumers plenty of opportunity to attend. "This promises to be an exciting year for plug-in vehicles," said Tom Saxton, Plug In America's chief science officer. "The BMW i3 will be on the road for the first full year, we expect deliveries of the Tesla Model X, an updated Chevy Volt, and greater overall sales growth than we saw last year.

VW decides against active-cooling system for e-Golf lithium battery

When the 2015 VW e-Golf was introduced at the LA Auto Show last year, VW said it would come with a water-cooled battery. During the Detroit Auto Show, when the car was trotted out again, VW released a new press release that stripped out the "water-cooled" language, but this change went unnoticed. During a recent VW event in Germany, a friend from Green Car Reports realized that the battery on display did not seem to have any water-cooling mechanisms. That set us off on a bit of a sleuthing and we have now learned that VW is not going to include any active cooling in the upcoming e-Golf. In fact, the company is entirely confident that this car - because of what it's designed to do - doesn't need it. "The need for a cooling system wasn't there" - VW's Darryll Harrison VW has been working on an electrified Golf for ages now, and so changes to the plan are to be expected. But battery cooling is vitally important not just to keep the car operating properly but because when things get too hot, there can be serious public relations problems. Nissan began testing a new battery chemistry for the Leaf in 2013 after an uproar from warm-weather EV drivers in Arizona who were experiencing worse-than-expected battery performance. The Leaf has always used an air-cooled battery, which is another way to say that there is no active cooling system (more details here). Tesla CEO Elon Musk once said this approach is "primitive." So, why is VW following the same path? We asked Darryll Harrison, VW US's manager of brand public relations west, for more information, and he told AutoblogGreen that VW engineers discovered through a lot of testing of the Golf Mk6 EV prototypes, that battery performance was not impacted by temperatures when using the right battery chemistry. That chemistry, it turns out, is lithium nickel manganese cobalt oxide (NMC) in cells from Panasonic. These cells had "the lowest self-warming tendency and the lowest memory effect of all cells tested," Harrison said. He added that VW engineers tested the NMC cells in places like Death Valley and Arizona and found they didn't warm very quickly either through operation, charging (including during fast charging) or through high ambient temps. "The need for a cooling system wasn't there," Harrison said.