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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.

Are more diesel scandals about to erupt?

More automakers may soon be embroiled, like Volkswagen, in diesel emissions scandals. According to the Daily Kanban, either the International Council on Clean Transportation (ICCT) or the Deutsche Umwelthilfe (DUH) will soon announce from 10 to 15 more cases of automakers cheating national diesel emissions rules. The outlet says three of the incidents are attributed to Opel. Studies conducted by the DUH, the University of Applied Sciences in Bern, Switzerland, and the UK's Leeds University found that Opel's diesel Zafira, Corsa, and Vectra models emit more NOx than European regulations allow when tested in ways that go beyond the European testing protocol, such as when done on a four-wheel rolling road instead of a two-wheel rolling road. Opel said the accusations had no merit. Specifically on the Zafira, the DUH asked Opel about the emissions findings, and Opel said that no General Motors software contains any measures to enable cheating. Opel then tested a Zafira of its own "both on a two- and a four-wheel roller dynamometer," finding that "The emission behavior determined in each case does not differ from one another." That makes this a case of he-said-she-said for the moment. The Daily Kanban's sources say the cheating methods "range from the crude to the highly sophisticated," with those at the latter end complex enough to render Volkswagen's methods "pedestrian." As for any automakers who might be named, the matter of real-world emissions exceeding a legal limit doesn't mean a carmaker has designed systems that cheat, it might mean the company designed the car to pass a test. Related Video: News Source: Daily KanbanImage Credit: PATRICK PLEUL/AFP/Getty Images Government/Legal Green Volkswagen Opel Emissions Diesel Vehicles vw diesel scandal icct

Carmakers say they 'can't meet' Euro 6 emissions targets

UPDATE: A previous version of this story listed Euro 6 requirements in kilograms per kilometer. This was incorrect. The correct unit is grams of NOx per kilometer, or g/km. The story has been edited accordingly. Well, the timing of this is not good. In the midst of Volkswagen's emissions cheating scandal, the European Automobile Manufacturers Association (ACEA) is claiming it won't be able to hit the stringent Euro 6 nitrogen oxide standards currently slated for the end of the decade. Currently, European legislators are set to begin requiring tougher emissions standards by 2017. Standards would be ramped up until 2020, when all new cars sold across the pond would be required to emit just 0.080 kilograms of nitrogen oxide per kilometer. That's too tough for automakers, though. Citing an "EU insider," AutoExpress reports that automakers are asking for conformity factors, which is a fancy way of saying they want easier standards. The automakers are requesting a conformity factor of 2.75 from 2017 to 2020, and a factor of 1.7 in 2020. What that means is that by 2020, new diesels would be allowed to emit 1.7 times the 0.080 g/km standard, or 0.136 g/km. While that might not be all that bad, if automakers were granted the 2.75 conformity factor, new diesels from 2017 wouldn't even be eligible for today's Euro 5 classification, AE claims. Far and away the most astonishing thing here though, is the way the ACEA is viewing the VW diesel scandal. According to AE, the EU insider said automakers across the pond think there's "a US conspiracy against European diesels." Yep. Volkswagen installed software on millions of vehicles to cheat emissions tests and it's somehow an American conspiracy. That makes loads of sense. To put it simply, automakers don't think their diesels will be able to hit European standards, so they're asking for a break. Whether European legislators go along with it remains to be seen. Related Video: