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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.

Daimler says straight up it doesn't cheat on emissions tests

Distancing itself from VW and its diesel emissions scandal, Daimler has put out a statement saying that it has never installed devices on their vehicles that would artificially reduce emissions during a testing process. The company added that it "actively" supports European regulators' efforts to improve emissions-testing methods to better measure emissions during "real" driving conditions. BMW put out a similar statement last week, saying that its diesels are programmed to be tested properly. While Mercedes-Benz diesels were a fixture on US roads in past decades, the company's diesel sales are now concentrated overseas. "We categorically deny the accusation of manipulating emission tests regarding our vehicles," Daimler said in Friday's statement. "A defeat device, a function which illegitimately reduces emissions during testing, has never been and will never be used at Daimler." There's a reason for that sort of straightforward statement. Namely, heads continue to roll at VW after the automaker admitted it manipulated software in its diesel vehicles to pass US emissions testing. VW followed up by saying that as may as 11 million vehicles worldwide may contain that software and has set aside $7.3 billion to address the issue. VW CEO Martin Winterkorn stepped down as well. Take a look at Daimler's press release below. Daimler AG categorically denies any and all allegations of manipulation Stuttgart, Sep 25, 2015 In light of the ongoing assertions from the Deutsche Umwelthilfe (DUH), a non-government organisation, and the related speculation, Daimler AG once again clearly states that: We categorically deny the accusation of manipulating emission tests regarding our vehicles. A defeat device, a function which illegitimately reduces emissions during testing, has never been and will never be used at Daimler. This holds true for both diesel and petrol engines. Our engines meet and adhere to every legal requirement. In light of the written request by the DUH, which was sent to us this morning with a deadline to respond by 3:00 pm (CET), and the seven questions they posed, we can confirm that none of the allegations apply to our vehicles. The technical programming of our engines adheres to all legal requirements. We have no knowledge of measurements that indicate our vehicles did not meet legally required standards.

More German automakers may be afoul of US emission standards

Volkswagen has plenty of smoke to share, and that may mean fire for other German automakers that make diesel vehicles, says Automotive News. Earlier this month, European Federation for Transport and Environment said that BMW, Daimler's Mercedes-Benz and General Motor's Opel division are among other automakers that may have equipped their vehicles' diesel engines with similar software as VW's. That software was found to reduce emissions while a car is being tested for emissions and shuts down emissions-control systems during normal use. The European environmental group used data from the International Council on Clean Transportation. Automotive News notes that the European environmental group put out its own report earlier this month, before the VW scandal broke loose, but the report was pretty much overlooked. Now, VW is under fire after it was discovered that 2.0-liter diesel engines in the VW Jetta and Golf, and Audi A3, may be programmed to game the emissions system. VW sold almost a half-million diesel vehicles in the US during the past six years. Both BMW and Mercedes-Benz told Automotive News that the issue that befell VW doesn't apply to their diesel vehicles. Earlier this week, Volkswagen admitted its car ran the sneaky software, while the US Environmental Protection Agency (EPA) has started a probe on the company. VW is setting aside more than $7 billion to pay for the alleged violations. Meanwhile, US taxpayers may have spent as much as $51 million a year to pay for subsidies related to VW's diesel vehicle sales in 2009 alone, according to the Los Angeles Times.