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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.

VW admits 430,000 2016 models have implausible CO2 ratings

Volkswagen finally explained more details about its CO2 rating scandal in Europe and admitted that 430,046 of the estimated 800,000 affected vehicles with "implausible" figures came from the 2016 model year. They included some from Audi, Seat, Skoda, VW, and VW Commercial Vehicles, according to the automaker's list (as a PDF). The problem mostly impacts diesel engines, but the inventory also shows some gasoline mills. VW will next determine the accurate CO2 emissions for these vehicles, and the German Federal Vehicle and Transport Authority will supervise that process to ensure the data's veracity. The automaker will also launch websites in Europe to let owners enter their model's VIN to check whether it's affected. Because governments there often link vehicle taxes and CO2 production, the company promises to work with regulators in each country to cover any fees that result from the inaccurate figures. VW announced the CO2 scandal earlier in November and estimated the equivalent of $2.2 billion to fix it at the time. A later report claimed that a group of engineers were responsible for fabricating the emissions data. They allegedly couldn't meet reduction goals from Martin Winterkorn, and between 2013 and this spring the workers did things like overinflate the tires during testing to achieve the desired results. VW is also closer to a fix in the diesel emissions scandal. According to an anonymous insider to Bloomberg, the company has a repair for the 1.6-liter engine that's reportedly neither very complex nor expensive. German regulators would still need to approve the solution before it could roll out to owners. Next step in clarifying the CO2 issue Affected Volkswagen Group models of the current model year have been identified Customers being informed via website Discussions with the authorities have begun The Volkswagen Group reports that the vehicles of the 2016 model year affected by the CO2 issue have been identified. There is thus now clarity about the new vehicles of the current model year out in the marketplace. On 3 November 2015, the Group had already reported that irregularities may have arisen in determining the CO2 figures for type approval of around 800,000 vehicles. This was identified during its own currently ongoing investigations and had been made public. The internal investigations into the current vehicles of the 2016 model year provide results for narrowing down the actually affected vehicles with implausible CO2 figures.

An inside look at VW's new California R&D center

Less than two months ago, the Volkswagen Group opened a new facility in Oxnard, California (about an hour's drive west of Los Angeles). The $27 million investment, touted as Test Center California (TCC), serves as a research and development lab testing emissions for all brands under Volkswagen's umbrella, including its newest member, Porsche. While still not fully operational, we toured the new 64,000-square-foot building last week and had a first-hand opportunity to see just how much work is involved testing engines and meeting increasingly stringent government emissions standards.
Replacing a similar facility established in 1990 in Westlake Village (about 20-minutes east of the new location), our guide explained how Oxnard was chosen for its temperate climate, varied regional terrain for test drives and low altitude. (The area is only a few feet above sea level - a critical parameter when instrument testing emissions.) The new facility is capable of analyzing hundreds of vehicles, prototypes and customer-owned vehicles, annually.
Most interesting to us was the huge stainless steel climate chamber, with a massive four-wheel dynamometer that allows VW to test running vehicles in both scorching desert and freezing climates without ever leaving the building (an Audi Q7 was running in place during our visit). We were also mesmerized by the countless storage tanks and intricate plumbing of chemicals, stored in both liquid and gas states, needed to perform the variety of tests. Lastly, we took a look at Bugatti's service center on the west coast, located completely within the new center. While there were no supercars on site, the facility is equipped with plenty of spare forged wheels (mounted with expensive Michelin PAX tires) and a Veyron-specific repair jig that allows the vehicle to be completely disassembled, if needed. It is a shame that the facility, which set off all of our automotive geek alerts, is closed to the public.